CN2159488Y

CN2159488Y - Cushioning expansion pipe support

Info

Publication number: CN2159488Y
Application number: CN 93214260
Authority: CN
Inventors: 沈伟宏
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-01
Filing date: 1993-06-01
Publication date: 1994-03-23
Anticipated expiration: 2003-06-01

Abstract

The utility model relates to a cushioning telescopic pipe supporting device, which is characterized in that the upper segment of each of the inner sleeve pipe segments of a telescopic pipe is sheathed with a locking mechanism; the telescopic pipe can be mutually and movably plugged with different sections; the circumference of the lower segment of each of the inner sleeves is provided with a concave annular groove; the concave annular groove is provided with a conical oil ring with outer expansion; the outer circumference of the big cone mouth of the conical oil ring is contacted with th adjacent inner chamber sheathed in the outer part of the conical oil ring and plays an effect in increasing resistance to reduce the falling speed of the telescopic pipe; the opening position between the sleeve pipe of maximum diameter and the sleeve pipe with minimum diameter is plugged with a plug cover and an air pressure bottom plug in order to match with the conical oil ring and form into an air chamber to reduce the falling speed of the telescopic pipe.

Description

Cushioning expansion pipe support

The utility model relates to a kind of pipe support support device of adjustable support height, particularly a kind of buffering type telescopic pipe support device.

The structure of existing support usefulness tripod as shown in Figure 1, be hinged with three supporting legs in the helmet bottom, supporting leg is the scalable shape that is made of several sections bodys of the different cross section size of sleeve mutually,

body

11 and 12 both mutual insertions or the extraction realization of the variation of bearing height by plugging together mutually, the locking during support is then realized by the locking framework 5 that is provided with on the body 11.The shortcoming of this tripod telescopic pipe support device is: if any of triangle pin does not engage fastening, then can cause the inclination of the production equipment on it and valuable equipment is damaged, the telescopic pipe that its reason is this triangle pin phase sleeve can descend rapidly under the weight effect thereon after out of control, makes people's air defense very anti-or come anxious rescuing and protecting.In addition, more time-consuming when this class tripod that triangle needs to adjust is simultaneously adjusted, and be difficult for coordinating fine, so easily cause the inconsistent of three leg height, this also is to cause the askew main cause of inclining.

Shown in Figure 2 is a kind of support telescopic pipe of vertical type projecting lamp, it is plugged together by the

telescopic pipe

11 and 12 of counting the joint different-diameter and constitutes, locking framework 5 is sleeved on major diameter telescopic pipe periphery and is fixed on this tube opening by screw 35, by turning knob 51, make the front end roof pressure card of knob 51 and the minor diameter telescopic pipe of its interior suit of packing.Its shortcoming is must buttress telescopic pipe 12 simultaneously when operation fixed mechanism 51, otherwise telescopic pipe 12 can glide telescopic pipe rapidly under the weight effect thereon, causes the damaged of top equipment.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and provide a kind of be provided with slow descending mechanism, locking is reliable and stable, fall to falling buffering type telescopic pipe support device slowly.

The purpose of this utility model is to realize by following technological scheme: the epimere in each inner sleeve section of the telescopic pipe of different cross section that can mutual movable sleeve is set with locking framework, hypomere at each casing section of interior cover circumferentially offers the hollow toroid groove, in the hollow toroid groove, be installed with the oil ring of expansion taper outside being, its outer adjacent casing inner chamber of the big cone opening outer periphery and suit of the oil ring of taper contacts and can play and increases the effect that resistance slows down the telescopic pipe falling speed, sleeve pipe and minimum sleeve pipe open-mouth at maximum diameter have inserted gag and air pressure bottom plug, slow down the telescopic pipe falling speed so that match formation one air chamber with oil ring.

Therefore remarkable result of the present utility model is:

1. by oil ring, gag and bottom plug and the mutual fit effect of telescopic pipe; form several sections inner chambers with sealing process; telescopic pipe and under the weight action of gravity; can produce a buffering air chamber; neither influence the flexible each other adjustment of telescopic pipe; the buffer function of slowing down the telescopic pipe falling speed can be reached again, the effect of significant protection equipment can be played.

2. it is convenient that simple in structure, folding is adorned.

3. pass through the size of the exhaust port of bottom plug, then can determine the time of telescopic pipe exhaust under the weight effect, appropriateness control telescopic pipe stretches and the purpose of rate of descent thereby reach.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof.

Fig. 1 is the existing schematic perspective view that supports with telescopic tube in the tripod.

Fig. 2 is the section of structure of the telescopic tube of existing vertical type projection lamp.

Fig. 3 is a stereochemical structure exploded view of the present utility model.

Fig. 4 is a section of structure of the present utility model.

Fig. 5 is the structure enlarged view of Fig. 4 bottom.

Working state figure when Fig. 6 is the utility model adjusting.

Fig. 7 is an an embodiment's of the present utility model three-dimensional outline drawing.

Be described in detail below in conjunction with 3 to 7 pairs of concrete structures of the present utility model of accompanying drawing:

The utility model has the

flexible pipeline section

11 and 12 of the different mutual sleeve of thickness, each inner sleeve section 12 epimere at interior cover are set with locking framework 5, it is characterized in that: the annular groove 122 that is equipped with an indent at each inner sleeve section 12 hypomere, in each annular groove 122, be installed with taper oil ring 4, lower open mouth stomidium 111 interpolations of casing section 11 are placed with the air pressure bottom plug 3 that a bottom has pore 32 outside, open-mouth end aperture 121 interpolations are connected with gag 2, gag 2 on the inner sleeve section 12 of inner ring, the flexible pipeline section 11 of air pressure bottom plug 3 and each mutual sleeve, 12 inner chamber has constituted buffer chamber 13.Referring to Fig. 3 to Fig. 6

Structure characteristic of the present utility model also is:

The sleeve air pressure bottom plugs 3 in the lower open mouth stomidium 111 of casing section 11 outside is an awl cylindrical body 31 uncovered on, has an exhaust port 32 that adapts with buffer chamber 13 cavity volume at the diapire middle part.Referring to Fig. 3 and Fig. 4

The outer shroud side face 41 of taper oil ring 4 is last young, up/down perforation taper anchor ring that end opening is big, the endoporus of taper oil ring 4 is circle hole shape and a snap ring 42 that fastens with the indent annular groove 122 of each inner sleeve section 12 hypomere outer surface is arranged, the hypomere of casing section 11 has the convex flange 112 of an annular outside, at the surface of internal cavity convex with each annular groove 122 corresponding section of each inner sleeve section 12 flange 123 is arranged.Referring to Fig. 3 to Fig. 5

With the last uncovered stomidium 121 of the inner sleeve section 12 of inner ring mutually the gag 2 top center epireliefs of adhesion have one to connect double-screw bolt 20, with stomidium 121 bonding be the cylindrical section 21 of a minor diameter.Referring to Fig. 3 and Fig. 4

Working principle of the present utility model is referring to Fig. 6.

When implementing the adjustment of bearing height, can unclamp the knob 51 of locking framework 5 earlier, make the intrados disengaging of the pressure holding sheet 52 in it and contacting of the pipeline section outer round surface that stretches, therefore, relatively can extract out between the

flexible pipeline section

11 and 12 or 12 of fit or weight effect thereon under move down, because gag 2 and bottom plug 3 have stopped up the two that is removed tube chamber, so the discharge of the gas in the buffer chamber 13 and suction all will be subjected to the restriction of exhaust port 32, so on take out or all can not carry out fast when falling, when especially falling, can play the buffer function that prevents that telescopic pipe from gliding fast.

The similar piston ring that in cylinder, moves of the effect of oil ring 4, upwards move when drawing, it can inwardly shrink the bullet change and not influence normal adjustment, and when falling, it is subjected to the effect of gases in the buffer chamber 13 and is and expands outwardly shape, make large awl end and surface of internal cavity contact seal, thus telescopic pipe can descend at a slow speed, even yet unlikely generation does not damage problem because of the telescopic pipe equipment that causes that descends fast when locking.

When Height Adjustment was good, locking knob 51 got final product, and interior sunk screw 53 is fixed on locking device the major diameter pipeline section epimere port of mutual sleeve.Referring to Fig. 4

Claims

1, buffering type telescopic pipe support device, flexible pipeline section (11) and (12) that the different mutual sleeve of thickness is arranged, each inner sleeve section (12) epimere at interior cover is set with locking framework (5), it is characterized in that: the annular groove (122) that is equipped with an indent at each inner sleeve section (12) hypomere, in each annular groove (122), be installed with taper oil ring (4), lower open mouth stomidium (111) interpolation of casing section (11) is placed with the air pressure bottom plug (3) that a bottom has pore (32) outside, go up open-mouth end aperture (121) interpolation in the inner sleeve section (12) of inner ring and be connected with gag 2, gag (2), the flexible pipeline section (11) of air pressure bottom plug (3) and each mutual sleeve, (12) inner chamber has constituted buffer chamber (13).

2, according to the described buffering type telescopic pipe of claim 1 support device, it is characterized in that: the sleeve air pressure bottom plug (3) in the lower open mouth stomidium (111) of casing section (11) outside is an awl cylindrical body (31) uncovered on, has an exhaust port (32) that adapts with buffer chamber (13) cavity volume at the diapire middle part.

3, according to the described buffering type telescopic pipe of claim 1 support device, it is characterized in that: the outer shroud side face (41) of taper oil ring (4) is last young, up/down perforation taper anchor ring that end opening is big, the endoporus of taper oil ring (4) is circle hole shape and a snap ring (42) that fastens with the indent annular groove (122) of each inner sleeve section (12) hypomere outer surface is arranged, the hypomere of casing section (11) has the convex flange (112) of an annular outside, at the surface of internal cavity convex with each annular groove (122) corresponding section of each inner sleeve section (12) flange (123) is arranged.

4, according to the described buffering type telescopic pipe of claim 1 support device, it is characterized in that: with the last uncovered stomidium (121) of the inner sleeve section (12) of inner ring mutually the gag of adhesion (2) top center epirelief have one to connect double-screw bolt (20), with stomidium (121) bonding be the cylindrical section (21) of a minor diameter.