CN102817306A

CN102817306A - Assembly-type infrared heating machine for heating inspection wellhead pitch road surface

Info

Publication number: CN102817306A
Application number: CN2012102802775A
Authority: CN
Inventors: 戴建斌; 戴丽娟; 戴叙生
Original assignee: CHANGSHU GAOSIDA INSTRUMENT EQUIPMENT Co Ltd
Current assignee: CHANGSHU GAOSIDA INSTRUMENT EQUIPMENT Co Ltd
Priority date: 2012-08-08
Filing date: 2012-08-08
Publication date: 2012-12-12
Anticipated expiration: 2032-08-08
Also published as: CN102817306B

Abstract

An assembled infrared heater for heating asphalt pavement at the mouth of a manhole belongs to the technical field of municipal maintenance construction facilities. It includes a pair of racks, the racks are fixed with rack guards, a liquefied gas tank seat is set at one end of the rack guards, and an electrical control box is set at the other end, and a set of racks is fixed on the downward facing side of the pair of racks Infrared radiation heating mechanism; gas pipe, a gas inlet joint is formed in the center of the gas pipe, a group of gas outlet joints are formed in the length direction of the gas pipe, and a mixed gas outlet mechanism is connected to each gas outlet joint; secondary ignition The mechanism is connected with the electrical control box. It is characterized by: a semicircle relief cavity at the mouth of the inspection well is formed in the center of one side of the pair of racks, and the shape of the infrared radiation heating mechanism corresponding to the semicircle relief cavity at the mouth of the inspection well is consistent with the shape of the infrared radiation heating mechanism. The semicircle of the manhole mouth gives way to the concave cavity to be consistent. Advantages: It can avoid the heating of the manhole cover area, save energy, and avoid damage to the manhole cover.

Description

The pin-connected panel infrared rays heater of inspection shaft mouth flexible pavement heating usefulness

Technical field

The invention belongs to municipal maintenance construction facility technology field, be specifically related to a kind of pin-connected panel infrared rays heater of inspection shaft mouth flexible pavement heating usefulness

Background technology

are in order to satisfy the plumbing requirement of town road; Usually the supporting water supply and sewerage pipeline that is laid with below road; And it is rational apart from being provided with the inspection shaft that top and pavement-height reach unanimity whenever to be separated by, and on inspection shaft, is mounted with the inspection shaft lid, builds the effect of protecting of covering to inspection shaft by inspection shaft; Ensure on the one hand the safety of pedestrian and vehicle etc., on the other hand for the maintenance of water-feeding & drainaging pipeline for example dredging sewer provide access.

such as industry the reason of knowledge; Because binding site remarkable fragility for other position of road of inspection shaft and asphalt roads; Therefore after asphalt roads comes into operation a period of time, the flexible pavement around the inspection shaft lid is prone to and such as decentralized crackle, hole, hole, causes the damage phenomenon, needs in time to repair; Otherwise can bring disaster to inspection shaft and even influence water supply and sewerage pipeline, and can influence the safety of pedestrian and/or vehicle.

What were original adopts oil to guarantee the repair free of charge benefit to hole, aforesaid hole and decentralized Crack repair mode usually; Oil is guaranteed the repair free of charge to mend to have and is made short work of and the strong point of economical with materials; But since be injected in hole hole and the crack the bubble bag can not and road asphalt between produce the good binding effect, thereby very easily occur shelling cause repair again frequent.If open yet the road surface around the inspection shaft mouth dug, so undoubtedly can produce following technical problem for the desired binding effect between the original pitch that improves the pitch that is used to repair and road: the one, long construction period and can influence traffic; The 2nd, maintenance load is big and operation intensity municipal maintenance work personnel are big; The 3rd, raw material throwing amount causes waste greatly and unavoidably.

utilize help the softening heater of pitch is heated the pitch around the inspection shaft lid and make former roadbed or claim that pavement asphalt is softening and use make repairing pitch with it reliable connection be the form of construction work that present industry is generally acknowledged; And in disclosed Chinese patent document, is no lack of technical information about the flexible pavement heater; Slightly with give an example like ZL03264008.0 (efficient microwave road heater), ZL03264009.9 (microwave asphalt road heater), ZL200320117944.4 (microwave asphalt road heater), ZL200420046641.2 (safe and reliable microwave road heater), ZL200420047053.0 (microwave road heater), ZL200420071607.0 (microwave road heater) and ZL200520055873.9 (steam type microwave road heater), or the like.

The logical fraud that the patented technology scheme that give an example above being not limited to exists is pointed out by manual the 0002nd hurdle of " heating arrangements of asphalt pavement heater " that application for a patent for invention publication No. CN101718073A provides.In addition, convenient from integrally-built terse and operation, " asphalt pavement heater " that CN2856135Y recommends has certain advantage, specifically can be referring to the Instructions Page 2 final stage of this CN2856135Y.

still; Do not it is found that below the above-mentioned patented technology scheme that comprises CN101718073Y and CN2856135Y also exists or come to light and unsolved common problem: promptly; Be not suitable for the heating of the flexible pavement around the inspection shaft mouth; Protect because the inspection shaft port area is covered by inspection shaft lid, and the inspection shaft lid is to reveal naked and do not have (should not have pitch to cover) that pitch covers, again because heater only needs the heating of the pitch around the inspection shaft mouth; Yet when using above-mentioned patent scheme that flexible pavement is heated; Often show together with the heating of inspection shaft lid,, also exist high temperature to undermine the anxiety of inspection shaft lid on the other hand so cause energy waste on the one hand.So to the heating of the flexible pavement around the inspection shaft mouth time, how reasonably to avoid the heating of inspection shaft lid is suffered from industry and expectation solution all the time for a long time; But in disclosed patent and non-patent literature, all be not seen in referential teachings; For this reason; The applicant has done useful design, the technical scheme that will introduce below having formed finally

Summary of the invention

task of the present invention is to provide a kind of when the flexible pavement around the inspection shaft mouth is heated, can reasonably avoiding that the pin-connected panel infrared rays heater of avoiding causing energy waste and avoiding undermining the inspection shaft mouth flexible pavement heating usefulness of inspection shaft lid is used in heating in the inspection shaft lid.

task of the present invention is accomplished like this; A kind of pin-connected panel infrared rays heater of inspection shaft mouth flexible pavement heating usefulness; Comprise the identical pair of frame of structure opposite each other and that under user mode, link together; This all is the structure of cuboid and respectively is fixed with a frame guard shield with airborne frame; End at each frame guard shield is provided with a liquefied gas fangs; And the other end is provided with an electric control box, this to frame towards under a side and from an end to the other end of the length direction of frame each is fixed with one group of infrared radiation heating arrangements with an arrangement mode that is close to, the space between described frame guard shield and the said infrared radiation heating arrangements constitutes the chamber of soaring; Be fixed on a side and the Gas Pipe that be positioned at the said chamber of soaring of the length direction of each frame; The middle position of the length direction of Gas Pipe and towards on a side constitute one with the combustion gas inlet suction port of described electric control box control connection; And constitute the combustion gas air outlet adapter that one group of quantity equates with the quantity of described infrared radiation heating arrangements with the interval state at the length direction of Gas Pipe; On each combustion gas air outlet adapter, be connected with a gaseous mixture derivation mechanism through pipeline; The gaseous mixture derivation mechanism is positioned at the said chamber and be connected with said infrared radiation heating arrangements of soaring, and wherein: the combustion gas air outlet adapter is formed in the sidepiece of Gas Pipe and towards the gaseous mixture derivation mechanism; Be arranged on the said pair of frame and corresponding to the regnition mechanism that will light by the gaseous mixture that said gaseous mixture derivation mechanism causes the infrared radiation heating arrangements of being used for of the below of described one group of infrared radiation heating arrangements; This regnition mechanism and described electric control box control connection; Be characterised in that: respectively constitute the inspection shaft mouth semicircle cavity of stepping down in the middle position of the length direction of the side that faces each other of described pair of frame, described one group of infrared radiation adds consistent corresponding to inspection shaft mouth semicircle shape and the inspection shaft mouth semicircle of infrared radiation heating arrangements of the cavity cavity of stepping down of stepping down in the mechanism.

are in a concrete embodiment of the present invention; The two ends of the length direction of said pair of frame and towards on a side respectively be fixed with a launching cradle; Described frame guard shield comprises top backplate and side guard board, and the two ends of top backplate and a pair of launching cradle are fixed, and makes by launching cradle between top backplate and the said infrared radiation heating arrangements and constitutes the described chamber of soaring; Described liquefied gas fangs and electric control box are arranged on the backplate of top; The side of side guard board and frame outward is fixed, and the upper edge of side guard board is connected with the top backplate, on the lower edge of side guard board, is connected with to be used for described infrared radiation heating arrangements is covered the anti-air curtain that protects; Described one group of combustion gas air outlet adapter position on said Gas Pipe is towards described gaseous mixture derivation mechanism, and described pipeline is a metal tube.

are in another concrete embodiment of the present invention; On the outer wall at the two ends of the long side direction of a side of described side guard board outward, respectively be fixed with one first universal wheel seat; Be provided with one first universal wheel at each first universal wheel seat head lamp brush guard pivot; And on the outer wall of the pair of short edges direction of side guard board, respectively be fixed with one second universal wheel seat; Be provided with one second universal wheel at each second universal wheel seat head lamp brush guard pivot; And on the outer wall corresponding to the pair of short edges direction of side guard board, respectively be provided with one and be used for described pair of frame is fixedly connected or removes the frame splicing apparatus that connects, wherein: the side at the length direction of pair of frame respectively is fixed with a positive handrail, and respectively is fixed with a side handrail at the two ends of pair of frame.

are in another concrete embodiment of the present invention; Described frame splicing apparatus comprises lock crook plate, lock crook plate pivot and stop pin; The lock crook plate pivot is arranged on the outer wall of said short side direction of side guard board of said frame guard shield of one of them frame in the described pair of frame; Stop pin is arranged on the outer wall of short side direction of side guard board of frame guard shield of another frame in the pair of frame; One end pivoting of lock crook plate is arranged on the lock crook plate pivot, and the other end constitute free end and with the stop pin hook.

are in another concrete embodiment of the present invention; Described gaseous mixture derivation mechanism comprises air jet pipe, air inlet adjustment nut sleeve, gaseous mixture jet thrust and liquid gas flow amount control device; One end of air jet pipe has a nut sleeve matching thread district, a pair of air inlet port and a valve seat, and nut sleeve matching thread district is formed on the outer wall of air jet pipe, and a pair of air inlet port is between nut sleeve matching thread district and valve seat; This a pair of air inlet port corresponds to each other and communicates with the jet tube chamber of air jet pipe; Valve seat is formed on the end face of a said end of air jet pipe, and the valve seat orifice of this valve seat communicates with said jet tube chamber, air inlet adjustment nut sleeve be nested with on air jet pipe and with nut sleeve matching thread district threaded engagement; When air inlet adjustment nut sleeve is being revolved when moving towards the direction of said valve seat in the said nut sleeve matching thread district; The opening degree of described air inlet port reduces, and is revolving when moving towards the direction that deviates from valve seat in the nut sleeve matching thread district when air inlet adjustment nut sleeve, and the opening degree of described air inlet port increases; One end of gaseous mixture jet thrust is connected the other end of air jet pipe with the screw thread docked mode; And the other end of gaseous mixture jet thrust and said infrared radiation heating arrangements are matched, and liquid gas flow amount control device and described valve seat are fixed, and are connected with described pipeline.

also have among the concrete embodiment of the present invention, and described liquid gas flow amount control device comprises control valve valve body, needle, nozzle and needle pipe, and the control valve valve body has a valve body holder; This valve body holder and described valve seat are fixed, and the needle pipe is arranged in the control valve valve body with level, and the zone between the outer wall of the inwall of control valve valve body and needle pipe constitutes the control valve body cavity; Sidepiece at the control valve valve body is extended with liquefied gas introducing interface, and this liquefied gas is introduced interface and communicated with said control valve body cavity, and is connected with described pipeline; One end of control valve valve body is extended with a needle connector; This needle connector has one and regulates screw, regulates screw and communicates with said needle pipe, and the other end of control valve valve body constitutes a nozzle carrier; One end and the nozzle carrier screw thread of nozzle connect; And the other end probes in the described valve seat orifice, the nozzle chambers of nozzle be shaped as taper, the stub end of this taper communicates towards nozzle carrier and with the control valve body cavity; And little head end is towards said valve seat orifice; One end of needle is probeing into described nozzle chambers successively and is arriving at the position of the spout of nozzle chambers behind the needle tube chamber of regulating screw and needle pipe, the other end of needle constitutes an adjustment screw, and this adjustment screw and described adjusting screw screw thread connect.

more of the present invention and among concrete embodiment, and described infrared radiation heating arrangements comprises overhead guard, insulating board, deposits the gas frame, jet plate, heating net, lining net, press net and holder screen frame, and overhead guard respectively is fixed with a frame Connection Block towards the side in the said chamber of soaring and the two ends that are positioned at this side; Frame Connection Block and described frame are fixed; Constitute the holder screen frame location flanging of bending vertically downward around the overhead guard, be connected with said holder screen frame location flanging around the holder screen frame, press net to be shelved on the holder screen frame; The lining net is stacked in presses on the net; It is online that the heating net is stacked in lining, and it is online that jet plate is stacked in heating, and a side that on jet plate, constitutes from the thickness direction of jet plate with high density state connects the fumarole to opposite side; Depositing the gas frame is stacked on the jet plate; This central region of depositing the gas frame constitutes deposits air cavity, and insulating board is stacked in to be deposited on the gas frame, and described gaseous mixture derivation mechanism is connected with said overhead guard and communicates with the said air cavity of depositing.

are in of the present invention and then concrete embodiment; On the flanging of described holder screen frame location, offer the flanging connecting hole with the interval state; On each flanging connecting hole, be equipped with holder screen frame hold-down screw; Around described holder screen frame and in the position corresponding to the flanging connecting hole, offer holder screen frame connecting hole with the interval state, described holder screen frame hold-down screw passes holder screen frame connecting hole and limits revolving the nut that limits that is assigned on the holder screen frame hold-down screw; Described heating net is nickel wire net or tungsten silk screen, and the number of plies is the 5-12 layer.

are of the present invention again more and among concrete embodiment; Described regnition mechanism comprises igniter holder fixed head, igniter holder, ignitron, first high-pressure electronic igniter head and second high-pressure electronic igniter head; Igniter holder fixed head is fixed on an end of said frame; The igniter holder is fixed on the igniter holder fixed head, and an end of ignitron is fixed on the igniter holder, and through air entraining pipe and described electric control box control connection; The other end of ignitron is connected with the other end of said frame; The middle part of ignitron is corresponding to the below of said one group of infrared radiation heating arrangements, and the middle part of ignitron offers the ignitron fumarole with the interval state, and first, second high-pressure electronic igniter head corresponds to each other; Wherein: first high-pressure electronic igniter head is fixed on a side of igniter holder; The first igniting pin of this first high-pressure electronic igniter head is corresponding to a side of ignitron, and first high voltage connector of first high-pressure electronic igniter head is connected with the electric control box electrical control by circuit, and second high-pressure electronic igniter head is fixed on the opposite side of igniter holder; The second igniting pin of this second high-pressure electronic igniter head is corresponding to the opposite side of ignitron; And second high voltage connector of second high-pressure electronic igniter head is connected with the electric control box electrical control by circuit equally, and wherein: the first igniting pin is electrically connected with first high voltage connector, and the second igniting pin is electrically connected with second high voltage connector.

are equipped with a fixed cover at the said other end of described ignitron in again of the present invention and then concrete embodiment, this fixed cover has a standing screw, and this standing screw is fixedly connected with the said other end of said frame.

technical scheme provided by the invention is because owing to respectively constitute the inspection shaft mouth semicircle chamber of stepping down with the middle position of the length direction of the side that faces each other of pair of frame; Thereby can avoid heating to inspection shaft lid zone; Both but energy conservation can avoid the inspection shaft lid to damage again.

Description of drawings

Fig. 1 is the embodiments of the invention sketch map.

Fig. 2 is the three-dimensional assembling assumption diagram of gaseous mixture derivation mechanism shown in Figure 1.

Fig. 3 is the three-dimensional assembling assumption diagram of infrared radiation heating arrangements shown in Figure 1.

Fig. 4 is the sectional view of Fig. 1.

Fig. 5 is the structure chart of regnition mechanism shown in Figure 1.

Fig. 6 is the sectional view of Fig. 5.

Fig. 7 is an application examples sketch map of the present invention.

The specific embodiment

can be expressly understood technical spirit of the present invention and beneficial effect more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.

see also Fig. 1; Provided pair of frame 1 cuboidal configuration and that be frame-like; A side that faces each other of this pair of frame 1 is fixed together with erection method under user mode, and particularly, a side side of the length direction of pair of frame 1 is fixed together with aspectant mode; Because the structure of pair of frame 1 is identical, therefore following description is only to one of them.Frame 1 towards on a side the surface and be positioned at two ends and respectively be fixed with the launching cradle 15 of a shape just as the portal frame shape; It is a pair of to that is to say that launching cradle 15 has; Certainly, the quantity of launching cradle 15 does not receive a pair of restriction, can increase as required; For example increase to three, therefore can not limit the present invention program with the number change of launching cradle 15.With regard to present embodiment, on a pair of launching cradle 15, be fixed with a frame guard shield 11, by frame guard shield 11 frame 1 is in the state of protecting that covers.

are as the main points of technical scheme provided by the invention: respectively be arranged with in the middle position of the side that faces each other of pair of frame 1 and the length direction that is positioned at this side and constitute the inspection shaft mouth semicircle cavity 14 of stepping down; Make step down cavity 14 of two inspection shaft mouth semicircles that face each other cooperate the back to form the circular cavity of an integral body therefrom; The inspection shaft lid that this circular cavity is used for being assigned on the inspection shaft mouth with known lid adapts, thereby the flexible pavement around inspection shaft mouth and the inspection shaft mouth is separated.So structure can be avoided the heating to the inspection shaft lid to the heating of the pitch around the inspection shaft mouth time, not only can energy conservation, and can avoid the inspection shaft lid to damage because of hyperthermia radiation.

aforesaid frame protecting cover 11 comprises top backplate 111 and side guard board 112; Top backplate 111 is fixed on the aforesaid a pair of launching cradle 15; Side guard board 112 is fixed with the side of frame 1 outward; And be welded to connect around the upper edge of side guard board 112 and the top backplate 111; And the lower edge of side guard board 112 is covered the side of frame 1 and is protected, and promptly side guard board 112 extends towards the direction of terrace, and is fixed with the anti-air curtain 1121 preferably filled the post of by exotic material such as glass fabric in the lower edge of side guard board 112.Shown in figure, one end of backplate 111 is fixed with a liquefied gas fangs 12 on the top, and the other end then is equipped with an electric control box 13.On the outer wall at the two ends of the long side direction of a side of side guard board 112 outwards, respectively be fixed with one first universal wheel seat 1122; Be provided with one first universal wheel 11221 at each first universal wheel seat 1122 head lamp brush guard pivot; And on the pair of short edges of side guard board 112 and be positioned at outer wall and respectively be fixed with one second universal wheel seat 1123; Be provided with one second universal wheel 11231 at each second universal wheel seat 1123 head lamp brush guard pivot, hence one can see that, for one of them frame 1 in the pair of frame 1, has four universal wheels.

promptly are convenient to move for the ease of using, and therefore the length direction in a side of pair of frame 1 outward respectively is provided with positive handrail 16a, and respectively is provided with a side handrail 16b at the two ends of pair of frame 1.

have illustrated each of the two ends that are positioned at pair of frame 1 and be used for frame splicing apparatus 6 that pair of frame 1 is linked together under user modes in Fig. 1; It is a pair of to that is to say that frame splicing apparatus 6 has; Each frame splicing apparatus 6 comprises lock crook plate 61, lock crook plate pivot 62 and stop pin 63; Stop pin 63 is fixed on the outer wall of minor face of side guard board 112 of frame guard shield 11 of one of them frame 1 in the pair of frame 1; In the present embodiment stop pin 63 has been fixed on one of them second universal wheel seat 1123 of a pair of second universal wheel seat 1123; Lock crook plate pivot 62 is fixed on the outer wall of minor face of side guard board 112 of frame guard shield 11 of another frame 1 in the pair of frame 1; In the present embodiment lock crook plate pivot 62 has been fixed on another the second universal wheel seat 1123 in a pair of second universal wheel seat 1123; One end of lock crook plate 61 is arranged on the lock crook plate pivot 62 rotationally, and the other end of lock crook plate 62 constitutes a lock crook plate recess 611, and this lock crook plate recess 611 hooks together and is buckled in shortly on the stop pin 63.

are when the present invention transports the job site to; As long as pair of frame 1 is put together together by the side that state shown in Figure 1 just will face each other; Then the free end with lock crook plate 61 promptly has the direction rotation of an end of lock crook plate recess 611 towards stop pin 63; Cooperate with stop pin 63 until lock crook plate recess 611, thereby pair of frame 1 is assembled into an integral body, vice versa.

are fixed with one group of infrared radiation heating arrangements 4 with a connecting method that is close to separately on aforesaid pair of frame 1 and from an end to the other end of the length direction of frame 1; In the present embodiment; Though in Fig. 1, illustrated the quantity of one group of infrared radiation heating arrangements 4 to have four, obviously quantity and limit the present invention whereby not.Because one group of infrared radiation heating arrangements 4 is positioned at the below of frame 1, says the below corresponding to frame guard shield 11 definitely, so maintains the space between frame guard shield 11 and one group of infrared radiation heating arrangements 4, constitutes the chamber 113 of soaring by this space.As aforementioned; Because the middle part of the length direction of the side that faces each other of pair of frame 1 and respectively constitute the inspection shaft mouth semicircle cavity 14 of stepping down in the position to correspond to each other; Therefore in one group of infrared radiation heating arrangements 4; Corresponding to inspection shaft mouth semicircle step down the shaped design of infrared radiation heating arrangements 4 at cavity 14 positions become to satisfy to the inspection shaft mouth semicircle degree that cavity 14 adapts of stepping down; Promptly consistent with the step down shape of cavity 14 of inspection shaft mouth semicircle, therefore, illustrated among the figure to be designed to circular-arc towards a step down end of cavity 14 of inspection shaft mouth semicircle two infrared radiation heating arrangements 4 in the middle of being positioned in one group of infrared radiation heating arrangements 4.

Be provided with a Gas Pipe 2 in frame guard shield 11 on each frame 1; Gas Pipe 2 is promptly fixed with long limit and side side guard board 112 that have the first universal wheel seat 1122 of frame 1 with a side of the length direction of frame 1; Middle part at the length direction of Gas Pipe 2 constitutes a combustion gas inlet suction port 21; Combustion gas inlet suction port 21 is by air supply pipe 211 (Fig. 7 shows) and electric control box 13 control connections, and constitutes that quantity equates with the quantity of aforesaid infrared radiation heating arrangements 4 with the interval state and corresponding to one group of combustion gas air outlet adapter 22 above the infrared radiation heating arrangements 4 at the length direction of Gas Pipe 2.Undoubtedly, each infrared radiation heating arrangements 4 is corresponding to a combustion gas air outlet adapter 22.Pipeline 221 through combustion gas air outlet adapter 22 on each combustion gas air outlet adapter 22 is connected with a gaseous mixture derivation mechanism 3; For the ease of combustion gas air outlet adapter 22 is connected with gaseous mixture derivation mechanism 3 easily; Therefore when design with combustion gas air outlet adapter 22 towards gaseous mixture derivation mechanism 3, combustion gas inlet suction port 21 then is positioned at Gas Pipe 2 towards a last side.Preferably, pipeline 221 uses metal tube, but also can use non-metallic pipe.Each gaseous mixture derivation mechanism 3 is stretched over infrared radiation heating arrangements 4 and connects with infrared radiation heating arrangements 4, and shown in figure, the quantity of one group of gaseous mixture derivation mechanism 3 equates promptly there are four equally with the quantity of one group of infrared radiation heating arrangements 4.

see also Fig. 2 and combine Fig. 1; One group of gaseous mixture derivation mechanism 3 respectively comprises air jet pipe 31, air inlet adjustment nut sleeve 32, gaseous mixture jet thrust 33 and liquid gas flow amount control device 34; One end of air jet pipe 31 promptly constitutes nut sleeve matching thread district 311, a pair of air inlet port 312 and valve seat 313 towards an end of aforesaid combustion gas air outlet adapter 22; Nut sleeve matching thread district 311 is formed on the outer wall of air jet pipe 31; A pair of air inlet port 312 is between nut sleeve matching thread district 311 and valve seat 313; And this a pair of air inlet port 312 keeps aspectant corresponding states each other, and valve seat 313 is positioned at air jet pipe 31 on the end face of an end of combustion gas air outlet adapter 22, has a valve seat orifice 3131 in the central authorities of this valve seat 313; This valve seat orifice 3131 communicates with the jet tube chamber 314 of air jet pipe 31, and valve seat 313 is provided with one group of (shown in Figure 2 is four) attachment screw hole 3132.Being nested with on air jet pipe 31 of air inlet adjustment nut sleeve 32, and wall is processed with internal thread 321 within it, this internal thread 321 and aforesaid nut sleeve matching thread district 311 threaded engagement.Because the function of a pair of air inlet port 312 is to be used to introduce outside air; Mixes with the liquefaction gas phase and form gaseous mixture by outside air, so the keying degree of a pair of air inlet port 312 is that the size of open degree is taken on for example (location status with current icon is an example) by air inlet adjustment nut sleeve 32: during the counterclockwise turn of air inlet adjustment nut sleeve 32; Then towards the direction displacement of valve seat 313; Thereby the degree of closure of 32 pairs of air inlet ports 312 of air inlet adjustment nut sleeve is increased, and the inlet of outside air reduces, otherwise; When air inlet adjustment nut sleeve 32 turns clockwise; Then towards the direction displacement away from valve seat 313, the opening degree of a pair of air inlet port 312 or title degree of exposure increase, and the inlet of outside air increases.Therefore can obtain the desirable mist of rational combustion efficiency to the reasonable adjusting of air inlet adjustment nut sleeve 32.Preferably; Also can on air inlet adjustment nut sleeve 32, offer a locating hole 322; And on locating hole 322, set one piece of dog screw 3221, the dog screw 3221 of after air inlet adjustment nut sleeve 32 is adjusted to required degree by top description, screwing is to limit air inlet adjustment nut sleeve 32.The screw thread of one end of gaseous mixture shower nozzle 33 and the other end of air jet pipe 31 connects; And the other end of gaseous mixture jet thrust connects an end of a connection pipeline section 331; The other end that connects pipeline section 331 has a connecting seat 3311, and Connection Block 3311 connects with top infrared radiation heating arrangements 4 that mentioned and that also will describe in detail below.Liquid gas flow amount control device 4 preferably but not the structure that definitely is limited to is following: comprise control valve valve body 341, needle 342, nozzle 343 and needle pipe 344; The middle part expansion of the length direction of control valve valve body 341 is provided with a valve body holder 3411; On this valve body holder 3411 and in position, offer the through hole 34111 that one group of quantity equates with attachment screw hole 3132, screw in attachment screw hole 3132 and valve body holder 3411 and valve seat 313 is fixing by attachment screw 34112 via through holes 34111 corresponding to aforesaid attachment screw hole 3132.Needle pipe 344 is arranged in the control valve valve body 341 with level; Space between the outer wall of the inwall of control valve valve body 341 and needle pipe 344 is that the zone constitutes control valve body cavity 3412, that is to say that whole piece of needle pipe 344 is positioned at control valve body cavity 3412 with level.Sidepiece at control valve valve body 341 is extended with liquefied gas introducing interface 3413; This liquefied gas is introduced interface 3413 and is communicated with aforesaid control valve body cavity 3412; And be connected with aforesaid pipeline 221, introduce in the control valve body cavity 3412 by the liquefied gas that this liquefied gas introducing interface 3413 will come from pipeline 221.End at control valve valve body 341 is extended with a needle connector 3414; This needle connector 3414 has one and regulates screw 34141; This adjusting screw 34141 communicates with aforesaid needle pipe 344; The other end of control valve valve body 341 constitutes a nozzle carrier 3415, and the inwall of this nozzle carrier 3415 constitutes nozzle and connects internal thread hole 34151.Constitute nozzle on the outer wall of one end of nozzle 343 and connect external screw thread 3432; This nozzle connects external screw thread 3432 and connects internal thread 34151 threaded engagement with nozzle; Thereby nozzle 343 is fixing with nozzle carrier 3145, and the other end of nozzle 343 probes into or claims to insert in the aforesaid valve seat orifice 3131.By shown in Figure 2; The shape of the nozzle chambers 3431 of nozzle 343 constitutes the big and little conical cavity of the diameter of the other end of the diameter of an end; The stub end of this conical cavity is that the big end of diameter communicates towards nozzle carrier 3415 and with control valve body cavity 342, and the little head end end that to be diameter little is towards valve seat orifice 3131.One end of needle 342 probes in the aforesaid nozzle chambers 3431 after passing the needle tube chamber of regulating screw 34141 and needle pipe 344 successively; And arrive at the position of the spout 34311 of nozzle chambers 3431; The other end of needle 342 constitutes an adjustment screw 3421, and this adjustment screw 3421 connects with aforesaid adjusting screw 34141 screw threads.Preferably, helmet screw thread 34142 is set on the outer wall of aforesaid needle connector 3414, on this helmet screw thread 34142, sets one and be used for adjustment screw 3421 is covered the helmet 345 that protects.

are under the state of removal helmet 345 at whiz, criticize (screwdriver) with instrument such as sieve adjustment screw 3421 is regulated, thereby needle 342 is changed in the position at spout 34311 places of nozzle chambers 3431.Particularly, towards the direction displacement of spout 34311, the liquefied gas that then comes from spout 34311 is that the flow of combustion gas diminishes to needle 342, otherwise with example.

see also Fig. 3 and Fig. 4, provided in the figure one of them frame 1 that is arranged in pair of frame 1 the below and all with the fixing one group of infrared radiation heating arrangements 4 (present embodiment is four) of frame 1.According to general knowledge, because that frame 1 has is a pair of, so infrared radiation heating arrangements 4 has two groups; There are four owing to every group again; Therefore have eight, also because the structure of each infrared radiation heating arrangements 4 is identical, so the applicant only is elaborated to one below.

preferably but not the structure of the infrared radiation heating arrangements 4 that definitely is limited to is following: comprise overhead guard 41, insulating board 42, deposit gas frame 43, jet plate 44, heating net 45, lining net 46, press net 47 and holder screen frame 48; Overhead guard 41 towards the surface of the side in the aforesaid chamber 113 of soaring and the two ends that are positioned at the surface of this side respectively be fixed with the L shaped frame Connection Block 411 that a shape of cross section is English alphabet; On each frame Connection Block 411, offer one group and be fixedly connected hole 4111 with the interval state; By being fixedly connected hole 4111 and relying on hold-down screw and with the corresponding both sides fixed connections (Fig. 1 shows) of frame Connection Block 411 with the length direction of frame 1; Constitute the holder screen frame location flanging 412 of vertical downward bending around the overhead guard 41; And on the flanging 412 of holder screen frame location, offer flanging connecting hole 4121 with the interval state; On each flanging connecting hole 4121, be furnished with holder screen frame hold-down screw 41211, each asks screen frame hold-down screw 41211 also to be equipped with and limits nut 41212.Be connected with holder screen frame location flanging 412 around the holder screen frame 48, specifically: around holder screen frame 48 and in position, offer the holder screen frame connecting hole 481 that quantity equates with the quantity of flanging connecting hole 412 corresponding to flanging connecting hole 4121.The inboard that corresponds to overhead guard 41 when holder screen frame 48 promptly corresponds to the interior rear flank that the holder screen frame is located flanging 412; Insert from flanging connecting hole 4121 and holder screen frame connecting hole 481 successively by aforesaid holder screen frame hold-down screw 41211; And limit with limiting nut 41212, thereby will ask screen frame 48 fixing with the holder screen frame location flanging 412 of overhead guard 41.Press net 47 to be shelved on holder screen frame 48 towards a last side; Lining net 41 is stacked in presses on the net 47, and heating net 45 is stacked on the lining net 46, and this heating net 45 also can be described as the heat radiation net; It is to be made up of nickel wire that is preferably the 5-12 layer or tungsten filament mesh grid; Jet plate 44 is shelved and being stacked in shortly on the heating net 45, and on this jet plate 44, constitutes the fumarole 441 that is through to opposite side from a side of the thickness direction of jet plate 44 with intensive form, deposits gas frame 43 and is stacked on the jet plate 44; This is deposited the central region of gas frame 43 or claims that zone in the framework constitutes and deposits air cavity 431; Insulating board 42 is stacked in to be deposited on the gas frame 43, and the gaseous mixture jet thrust 33 of aforesaid gaseous mixture derivation mechanism 3 connects with the Connection Block resigning hole 413 on the overhead guard 41, more properly says; Connection Block 3311 on the connection pipeline section 331 of gaseous mixture jet thrust 33 connects with Connection Block resigning hole 413, and connection pipeline section 331 is communicating with the aforesaid air cavity 431 of depositing after seeing through insulating board 42.

see also Fig. 5 and Fig. 6 and still combine Fig. 1; Because the structure corresponding to a pair of regnition mechanism 5 of the below of each one group of infrared radiation heating arrangements 4 of pair of frame 1 is identical, so the applicant only is described in detail to one below.

preferably but not the structure of the regnition mechanism 5 that definitely is limited to is following: comprise igniter holder fixed head 51, igniter holder 52, ignitron 53, first high-pressure electronic igniter head 54 and second high-pressure electronic igniter head 55; The global shape of igniter holder fixed head 51 is L shaped (Fig. 1 shows) of English alphabet; And fix with a fixed head screw 511 and an end of frame 1; The illustrated igniter hold-down screw 521 of igniter holder 52 usefulness is fixing with igniter holder fixed head 51; One end of ignitron 53 is fixed on the igniter holder 52 and leans out igniter holder 52; And through air entraining pipe 531 (Fig. 7 shows) and aforesaid electric control box 13 control connections; The other end of ignitron 53 is provided with a fixed cover 532, and this fixed cover 532 has a standing screw 5321, and standing screw 5321 is fixed with the other end of frame 1; The middle part of ignitron 53 is corresponding to the below of aforesaid one group of infrared radiation heating arrangements 4, and offers fumarole 533 with the interval state.First, second high-pressure electronic igniter head 54,55 is inserted on each igniter head fixing hole 522 of the both sides that are preset in igniter holder 52 with corresponding to each other; And each is fixing by igniter head hold-down screw 523 supportings that are provided on the igniter holder 522; Wherein: first high-pressure electronic igniter head 54 is positioned at a side of igniter holder 52; The first igniting pin 541 of this first high-pressure electronic igniter head 54 is corresponding to a side of ignitron 53; And first high voltage connector 542 of first high-pressure electronic igniter head 54 is connected with electric control box 13 electrical controls by circuit; Second high-pressure electronic igniter head 55 is fixed on the opposite side of igniter holder 52; The second igniting pin 551 of this second high-pressure electronic igniter head 55 is corresponding to the opposite side of ignitron 53, and second high voltage connector 552 of second high-pressure electronic igniter head 55 is connected with electric control box 13 electrical controls by circuit equally.According to general knowledge, the first igniting pin 541 is electrically connected with first high voltage connector 542, and the second igniting pin 551 is electrically connected with second high voltage connector 552.

in aforesaid electric control box 13 by the air entraining pipe electromagnetic valve that the air supply pipe electromagnetic valve that is used to control air supply pipe 211 is housed, is used to control air entraining pipe 531 be used to control the ignition switch that is connected with first, second line ball joint 542,552 circuit.The power supply of electric control box 13 preferably uses solar photovoltaic assembly, specifically: can on the top of frame guard shield 11 backplate 111, dispose solar photovoltaic electrification component.

see also Fig. 7 and combine Fig. 1 to Fig. 6; On the liquefied gas fangs 12 of the top backplate 111 of the frame guard shield 11 of pair of frame 1, respectively be provided with a liquefied gas storage 7, the combustion gas efferent duct of drawing on the reducing valve by liquefied gas storage 7 is introduced in the electric control box 13 and with aforesaid air supply pipe electromagnetic valve from the transitional pore 131 (Fig. 1 shows) on the electric control box 13 and is connected with the air entraining pipe electromagnetic valve.

are when the present invention is transported to the job site; Through aforesaid frame splicing apparatus 6 pair of frame 1 is in amalgamation state together; Promptly be in state shown in Figure 1, and with the aforesaid inspection shaft mouth semicircle position of cavity 14 corresponding to the inspection shaft of job site lid of stepping down.By the operator corresponding operating button 132 on the electric control box 13 is operated; For example under the state of the opening of valves on the liquefied gas storage 7, open the air supply pipe electromagnetic valve that is used to control air supply pipe 211 earlier; Liquefied gas is caused the combustion gas inlet suction port 21 of Gas Pipe 2 by air supply pipe 211; The intraluminal liquefied gas of Gas Pipe that enters into Gas Pipe 2 is introduced the liquid gas flow amount control device 34 by the gaseous mixture derivation mechanism of Fig. 2 signal through combustion gas air outlet adapter 22 and pipeline 221; The control valve body cavity 3412 interior liquefied gas that enter into the control valve valve body 341 of liquid gas flow amount control device 34 spray into the valve seat orifice 3131 of valve seat 313 from the spout 34311 of the nozzle chambers 3431 of nozzle 343; Coming from valve seat orifice 3131 liquefied gas mixes mutually with the outside air that comes from air inlet port 312 and forms gaseous mixture and get into the jet tube chamber 314 of air jet pipe 31; Gaseous mixture in the jet tube chamber 314 through gaseous mixture jet thrust 33 with is connected pipeline section 331 spray into infrared radiation heating arrangements 4 deposit gas frame 43 deposit air cavity 431, get into fumarole 441 disperses of gaseous mixture on jet plate 44 of depositing in the air cavity 431 and net 45 to generating heat.Because the ignitron 53 of regnition mechanism 5 is corresponding to the below of one group of infrared radiation heating arrangements 4; Therefore above-mentioned give Gas Pipe 2 air feed in; Through being opened, the operation of electric control box 13 is the gas supply electromagnetic valve of ignitron 53 air feed; Air entraining pipe 531 is introduced ignitron 531 with liquefied gas, and the liquefied gas in the inlet point fire tube 531 is from 5331 ejections of ignitron fumarole.Thereby make first, second igniting pin 541,551 send high tension spark, light out the liquefied gas of self-ignition fumarole 533 through the high-tension ignition switch is opened in the operation of electric control box 13 this moment.Under this state; The central region of whole ignitron 53 (zone with ignitron fumarole 533) promptly forms a tediously long fire bundle or claims the fire band corresponding to the zone of one group of infrared radiation heating arrangements 4, is lighted by the gaseous mixture that this tediously long fire bundle will come from the fumarole 441 of jet plate 44.Finish back cut-out point ignition circuit at regnition.Under this state, by the 45 road pavement pitch thermoplastics of heating net, in order to repairing asphalt, can be to this referring to the manual 0025-0026 section of CN101718073A.

In sum, technical scheme provided by the invention has overcome the deficiency in the prior art, has accomplished the invention task, has embodied the technique effect described in the superincumbent technique effect of the applicant hurdle objectively

Claims

1. a kind of inspection shaft mouth flexible pavement heats the pin-connected panel infrared rays heater of usefulness; Comprise pair of frame (1) opposite each other and that structure that under user mode, link together is identical; This all is the structure of cuboid and respectively is fixed with a frame guard shield (11) with airborne frame (1); End at each frame guard shield (11) is provided with a liquefied gas fangs (12); And the other end is provided with an electric control box (13); This to frame (1) towards under a side and from an end to the other end of the length direction of frame (1) each is fixed with one group of infrared radiation heating arrangements (4) with an arrangement mode that is close to, the space between described frame guard shield (11) and the said infrared radiation heating arrangements (4) constitutes the chamber of soaring (113); Be fixed on a side and the Gas Pipe (2) that be positioned at the said chamber of soaring (113) of the length direction of each frame (1); In the middle position of the length direction of Gas Pipe (2) and towards a last side constitute one with the combustion gas inlet suction port (21) of described electric control box (13) control connection; And constitute the combustion gas air outlet adapter (22) that one group of quantity equates with the quantity of described infrared radiation heating arrangements (4) with the interval state at the length direction of Gas Pipe (2); Upward be connected with a gaseous mixture derivation mechanism (3) at each combustion gas air outlet adapter (22) through pipeline (221); Gaseous mixture derivation mechanism (3) is positioned at the said chamber of soaring (113) and is connected with said infrared radiation heating arrangements (4), and wherein: combustion gas air outlet adapter (22) is formed in the sidepiece of Gas Pipe (22) and towards gaseous mixture derivation mechanism (3); Be arranged on the said pair of frame (1) and being used for and will causing the regnition mechanism (5) that the gaseous mixture of infrared radiation heating arrangements (4) is lighted corresponding to the below of described one group of infrared radiation heating arrangements (4) by said gaseous mixture derivation mechanism (3); This regnition mechanism (5) and described electric control box (13) control connection; It is characterized in that: respectively constitute the inspection shaft mouth semicircle cavity (14) of stepping down in the middle position of the length direction of the side that faces each other of described pair of frame (1), described one group of infrared radiation adds consistent corresponding to inspection shaft mouth semicircle shape and the inspection shaft mouth semicircle of infrared radiation heating arrangements (4) of cavity (14) cavity (14) of stepping down of stepping down in the mechanism (4).

2. inspection shaft mouth flexible pavement according to claim 1 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that respectively being fixed with a launching cradle (15) at the two ends of the length direction of said pair of frame (1) and towards a last side; Described frame guard shield (11) comprises top backplate (111) and side guard board (112); The two ends of top backplate (111) and a pair of launching cradle (15) are fixing; Make by launching cradle (15) and to constitute the described chamber of soaring (113) between top backplate (111) and the said infrared radiation heating arrangements (4); Described liquefied gas fangs (12) and electric control box (13) are arranged on the top backplate (111); The side of side guard board (112) and frame (1) outward is fixed, and the upper edge of side guard board (112) is connected with top backplate (111), on the lower edge of side guard board (112), is connected with to be used for described infrared radiation heating arrangements (4) is covered the anti-air curtain (1121) that protects; The position of described one group of combustion gas air outlet adapter (22) on said Gas Pipe (2) is towards described gaseous mixture derivation mechanism (3), and described pipeline (221) is a metal tube.

3. inspection shaft mouth flexible pavement according to claim 2 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that on the outer wall at the two ends of the long side direction of a side of described side guard board (112) outward, respectively being fixed with one first universal wheel seat (1122); Be provided with one first universal wheel (11221) at each first universal wheel seat (1122) head lamp brush guard pivot; And on the outer wall of the pair of short edges direction of side guard board (112), respectively be fixed with one second universal wheel seat (1123); Be provided with one second universal wheel (11231) at each second universal wheel seat (1123) head lamp brush guard pivot; And on the outer wall corresponding to the pair of short edges direction of side guard board (112), respectively being provided with one is used for described pair of frame (1) is fixedly connected or removes the frame splicing apparatus (6) that connects; Wherein: the side at the length direction of pair of frame (1) respectively is fixed with a positive handrail (16a), and respectively is fixed with a side handrail (16b) at the two ends of pair of frame (1).

4. inspection shaft mouth flexible pavement according to claim 3 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that described frame splicing apparatus (6) comprises lock crook plate (61), lock crook plate pivot (62) and stop pin (63); Lock crook plate pivot (62) is arranged on the outer wall of said short side direction of side guard board (112) of said frame guard shield (11) of one of them frame (1) in the described pair of frame (1); Stop pin (63) is arranged on the outer wall of short side direction of side guard board (112) of frame guard shield (11) of another frame (1) in the pair of frame (1); One end pivoting of lock crook plate (61) is arranged on the lock crook plate pivot (62), and the other end constitute free end and with stop pin (63) hook.

5. inspection shaft mouth flexible pavement according to claim 2 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that described gaseous mixture derivation mechanism (3) comprises air jet pipe (31), air inlet adjustment nut sleeve (32), gaseous mixture jet thrust (33) and liquid gas flow amount control device (34); One end of air jet pipe (31) has a nut sleeve matching thread district (311), a pair of air inlet port (312) and a valve seat (313); Nut sleeve matching thread district (311) is formed on the outer wall of air jet pipe (31); A pair of air inlet port (312) is positioned between nut sleeve matching thread district (311) and the valve seat (313); This a pair of air inlet port (312) corresponds to each other and communicates with the jet tube chamber (314) of air jet pipe (31); Valve seat (313) is formed on the end face of a said end of air jet pipe (31); And the valve seat orifice (3131) of this valve seat (313) communicates with said jet tube chamber (314); Air inlet adjustment nut sleeve (32) be nested with air jet pipe (31) go up and with nut sleeve matching thread district (311) threaded engagement, revolve when moving when air inlet adjustment nut sleeve (32) goes up in said nut sleeve matching thread district (311) towards the direction of said valve seat (313), the opening degree of described air inlet port (312) reduces; And revolve when moving when air inlet adjustment nut sleeve (32) goes up in nut sleeve matching thread district (311) towards the direction that deviates from valve seat (313); The opening degree of described air inlet port (32) increases, and an end of gaseous mixture jet thrust (33) is connected the other end of air jet pipe (31) with the screw thread docked mode, and the other end of gaseous mixture jet thrust (33) and said infrared radiation heating arrangements (4) are matched; Liquid gas flow amount control device (34) is fixing with described valve seat (313), and is connected with described pipeline (221).

6. inspection shaft mouth flexible pavement according to claim 5 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that described liquid gas flow amount control device (34) comprises control valve valve body (341), needle (342), nozzle (343) and needle pipe (344); Control valve valve body (341) has a valve body holder (3411); This valve body holder (3411) is fixing with described valve seat (313); Needle pipe (344) is arranged in the control valve valve body (341) with level, and the zone between the outer wall of the inwall of control valve valve body (341) and needle pipe (344) constitutes control valve body cavity (3412), is extended with a liquefied gas at the sidepiece of control valve valve body (341) and introduces interface (3413); This liquefied gas is introduced interface (3413) and is communicated with said control valve body cavity (3412); And be connected with described pipeline (221), an end of control valve valve body (341) is extended with a needle connector (3414), and this needle connector (3414) has one and regulates screw (34141); Regulating screw (34141) communicates with said needle pipe (344); The other end of control valve valve body (341) constitutes a nozzle carrier (3415), and an end of nozzle (343) and nozzle carrier (3415) screw thread connect, and the other end probes in the described valve seat orifice (3131); The nozzle chambers (3431) of nozzle (343) be shaped as taper; The stub end of this taper communicates towards nozzle carrier (3415) and with control valve body cavity (3412), and little head end is towards said valve seat orifice (3131), and an end of needle (342) is probeing into described nozzle chambers (3431) successively and arriving at the position of the spout (34311) of nozzle chambers (3431) behind the needle tube chamber of regulating screw (34141) and needle pipe (344); The other end of needle (342) constitutes an adjustment screw (3421), and this adjustment screw (3421) connects with described adjusting screw (34141) screw thread.

7. inspection shaft mouth flexible pavement according to claim 2 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that described infrared radiation heating arrangements (4) comprises overhead guard (41), insulating board (42), deposits gas frame (43), jet plate (44), heating net (45), lining net (46), press net (47) and hold in the palm screen frame (48); Overhead guard (41) respectively is fixed with a frame Connection Block (411) towards the side in the said chamber of soaring (113) and the two ends that are positioned at this side; Frame Connection Block (411) is fixing with described frame (1); Constitute the holder screen frame location flanging (412) of bending vertically downward around the overhead guard (41), be connected with said holder screen frame location flanging (412) around the holder screen frame (48), press net (47) to be shelved on the holder screen frame (48); Lining net (46) is stacked in presses on the net (47); Heating net (45) is stacked on lining net (46), and jet plate (44) is stacked on the heating net (45), and goes up a side that constitutes from the thickness direction of jet plate (44) with high density state at jet plate (44) and connect the fumarole (441) to opposite side; Depositing gas frame (43) is stacked on the jet plate (44); This central region of depositing gas frame (43) constitutes deposits air cavity (431), and insulating board (42) is stacked in to be deposited on the gas frame (43), and described gaseous mixture derivation mechanism (3) is connected with said overhead guard (41) and deposits air cavity (431 communicate with said.

8. inspection shaft mouth flexible pavement according to claim 7 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that upward offering flanging connecting hole (4121) with the interval state at described holder screen frame location flanging (412); On each flanging connecting hole (4121), be equipped with holder screen frame hold-down screw (41211); Around described holder screen frame (48) and in the position corresponding to flanging connecting hole (4121), offer holder screen frame connecting hole (481) with the interval state, described holder screen frame hold-down screw (41211) passes holder screen frame connecting hole (481) and limits revolving the nut (41212) that limits that is assigned on the holder screen frame hold-down screw (41211); Described heating net (45) is nickel wire net or tungsten silk screen, and the number of plies is the 5-12 layer.

9. inspection shaft mouth flexible pavement according to claim 1 heats the pin-connected panel infrared rays heater of usefulness; It is characterized in that described regnition mechanism (5) comprises igniter holder fixed head (51), igniter holder (52), ignitron (53), first high-pressure electronic igniter head (54) and second high-pressure electronic igniter head (55); Igniter holder fixed head (51) is fixed on an end of said frame (1); Igniter holder (52) is fixed on the igniter holder fixed head (51); One end of ignitron (53) is fixed on the igniter holder (52); And through air entraining pipe (531) and described electric control box (13) control connection; The other end of ignitron (53) is connected with the other end of said frame (1); The middle part of ignitron (53) is corresponding to the below of said one group of infrared radiation heating arrangements (4), and the middle part of ignitron (53) offers ignitron fumarole (533) with the interval state, and first, second high-pressure electronic igniter head (54,55) corresponds to each other; Wherein: first high-pressure electronic igniter head (54) is fixed on a side of igniter holder (52); The first igniting pin (541) of this first high-pressure electronic igniter head (54) is corresponding to a side of ignitron (53), and first high voltage connector (542) of first high-pressure electronic igniter head (54) is connected with electric control box (13) electrical control by circuit, and second high-pressure electronic igniter head (55) is fixed on the opposite side of igniter holder (52); The second igniting pin (551) of this second high-pressure electronic igniter head (55) is corresponding to the opposite side of ignitron (53); And second high voltage connector (552) of second high-pressure electronic igniter head (55) is connected with electric control box (13) electrical control by circuit equally, and wherein: the first igniting pin (541) is electrically connected with first high voltage connector (542), and the second igniting pin (551) is electrically connected with second high voltage connector (552).

10. The pin-connected panel infrared rays heater of inspection shaft mouth flexible pavement heating usefulness according to claim 9; It is characterized in that being equipped with a fixed cover (532) at the said other end of described ignitron (53); This fixed cover (532) has a standing screw (5321), and this standing screw (5321) is fixedly connected with the said other end of said frame (1)