CN107817832A - A kind of indoor small pitch synchronous breakstone experimental provision and its experimental method - Google Patents

Abstract

The invention discloses an indoor small-scale asphalt synchronous crushing stone experimental device and its experimental method. The device includes a frame, a crushed stone spreading mechanism, an asphalt spraying mechanism, a walking drive mechanism and a control mechanism. The crushed stone spreading mechanism includes a crushed stone silo and a gravel spreader, the asphalt spraying mechanism includes an asphalt storage tank, an asphalt pump and an asphalt spraying rod, the asphalt spraying rod is provided with at least one asphalt spraying port, the driving mechanism includes a driving motor, a rotating shaft, a road wheel and a guide rail, and the control mechanism is respectively It is electrically connected with the gravel spreader, the asphalt pump and the driving motor; in the present invention, the asphalt spraying mechanism and the gravel spreading mechanism are set in the same experimental device, so that the asphalt spraying work and the gravel spreading work can be carried out simultaneously, avoiding the Asphalt spraying work and crushed stone spreading work cannot be carried out simultaneously, which leads to complex experimental operation process and poor combination effect of crushed stone and asphalt, which improves the effect of fog sealing and thus improves the experimental effect.

Description

An indoor small-scale asphalt synchronous crushing stone experimental device and its experimental method

technical field

The invention relates to the technical field of indoor small-scale experiments, in particular to an indoor small-scale asphalt synchronous crushing stone experimental device and an experimental method thereof.

Background technique

Asphalt concrete roads have the advantages of high strength, good stability, and low daily maintenance costs, and have been popularized and used in a large area of the country. With the development of my country's transportation industry, the increase of traffic volume, overloaded transportation, after a long period of use of asphalt concrete roads, the damage to the road surface is more serious, and the asphalt concrete road surface has rutting, wrapping, cracking, smooth surface, etc. Diseases, many diseases of asphalt pavement are caused by water leakage on the surface. Fog seal is to spray a thin layer of highly permeable emulsified asphalt on the asphalt surface to form a tight waterproof layer to seal the road surface. It is a direct, economical and effective preventive maintenance construction measure that can Effectively prevent water from entering the pavement, play the role of water isolation and anti-seepage, protect the pavement, minimize water damage on the pavement, increase the bonding force between pavement materials, and prolong the service life of the pavement. In recent years, the construction technology of fog seal layer has been paid more and more attention and popularized.

For the spraying of the mist seal, a machine is needed that can realize the synchronous layering of emulsified asphalt and gravel or sand, so that the currently used anti-slip mist seal can achieve the effect of "spraying". Existing mist seal layer spraying machine is that nozzle is installed on the spray horizontal bar, mist seal layer is sprayed out by nozzle. And it is mainly based on the improvement of the large-scale asphalt synchronous crushing device, which is aimed at the on-site fog seal layer spraying device.

There are following problems in existing mist sealing layer spraying equipment:

1. Based on the large-scale asphalt synchronous crushing device, it is an on-site spraying device for fog seal layer, but it is inconvenient to operate for small-scale indoor experiments.

2. It is mainly aimed at emulsified asphalt and modified emulsified asphalt, but not suitable for sand and gravel.

3. The direction of travel, travel speed and construction process cannot be precisely controlled.

Contents of the invention

The purpose of the present invention is to provide an indoor small-scale asphalt synchronous gravel experimental device and its experimental method with small volume, rich functions, high control precision, good fog sealing effect and accurate experimental results, so that the volume of the existing fog sealing layer spraying equipment The problems of large size, single function and poor control precision can be solved.

In order to achieve the above object, the present invention provides the following scheme: the present invention provides an indoor small-scale asphalt synchronous crushing stone experiment device, including a frame, a crushed stone spreading mechanism arranged on the frame, an asphalt spraying mechanism, and a walking drive mechanism and a control mechanism, the crushed stone spreading mechanism includes a connected crushed stone silo and a crushed stone spreader, the asphalt spraying mechanism includes an asphalt storage tank, an asphalt pump and an asphalt spraying rod connected in sequence through pipelines, the asphalt The spray rod is provided with at least one asphalt spray port, and the driving mechanism includes a driving motor, a rotating shaft, a traveling wheel and a guide rail connected in sequence, the rotating shaft is movably connected to the frame through bearings, and the control mechanism is respectively connected to the The gravel spreader, the asphalt pump and the driving motor are electrically connected.

Preferably, a first pipeline and a second pipeline assembly are arranged between the asphalt pump and the asphalt spray rod, one end of the first pipeline is connected in series with the second pipeline assembly, and the first The other end of a pipeline is connected to the asphalt pump, the second pipeline assembly includes at least one second pipeline, and each of the second pipelines is connected to one of the asphalt spray ports.

Preferably, each of the second pipelines is provided with a material gate opening and closing valve, and the material gate opening and closing valve is electrically connected with the control mechanism.

Preferably, a pressure sensor is provided on the second pipeline, and the pressure sensor is used to detect the fluid pressure in the second pipeline.

Preferably, a pneumatic opening and closing valve is arranged on the first pipeline, and the pneumatic opening and closing valve is electrically connected with the control mechanism.

Preferably, the first pipeline is also connected with a pneumatic mechanism, and the pneumatic mechanism is electrically connected with the control mechanism.

Preferably, the pneumatic mechanism includes a connected air compressor and a triple air circuit.

Preferably, the traveling drive mechanism is provided with a rotational speed sensor, the rotational speed sensor is used to detect the rotational speed of the drive motor, and the rotational speed sensor is electrically connected to the control mechanism.

The present invention also provides an experimental method using the above-mentioned indoor small-scale asphalt synchronous gravel experimental device, comprising the following steps:

Pour sand or gravel into the gravel silo, and put the emulsified asphalt or modified emulsified asphalt into the asphalt storage tank;

Start the drive motor of the asphalt pump, gravel spreader and travel drive mechanism through the control mechanism, wherein the drive motor drives the device to move, and at the same time the asphalt pump supplies emulsified asphalt or modified emulsified asphalt to the asphalt spraying rod, and the pressure sensor detects the ingress The pressure of emulsified asphalt or modified emulsified asphalt in the asphalt spraying rod, the pressure sensor transmits the pressure value to the control mechanism, when the pressure value exceeds the preset threshold, the control mechanism controls the asphalt pump to reduce the supply of emulsified asphalt or modified emulsified asphalt amount; when the pressure value is lower than the preset threshold, the control mechanism controls the asphalt pump to increase the supply of emulsified asphalt or modified emulsified asphalt, and/or the control mechanism controls a pneumatic mechanism to pump the emulsified asphalt out of the asphalt pump or modified emulsified asphalt; the gravel spreader spreads gravel on the surface of the object after spraying emulsified asphalt or modified emulsified asphalt; after the gravel spreading is completed, spray emulsified asphalt or modified emulsified asphalt on the gravel layer asphalt;

Complete asphalt synchronized gravel work.

Preferably, the walking drive mechanism is provided with a rotational speed sensor, the rotational speed of the driving motor is detected by the rotational speed sensor, and the rotational speed value is transmitted to the control mechanism, and the control mechanism controls the rotational speed of the driving motor through the rotational speed value, and the adjustment device run speed.

Compared with the prior art, the present invention has achieved the following beneficial effects:

1. In the indoor small-scale asphalt synchronous crushing stone experimental device and its experimental method provided by the present invention, the asphalt spraying mechanism and the crushed stone spreading mechanism are arranged in the same experimental device, so that the asphalt spraying work and the crushing stone spreading work can be carried out simultaneously , avoiding the problem that the asphalt spraying work and the crushed stone spreading work cannot be carried out simultaneously, which leads to the complicated experimental operation process, and the poor combination effect of the crushed stone and asphalt, and improves the fog seal effect, thereby improving the experimental effect.

2. In the indoor small-scale asphalt synchronous crushing stone experimental device and its experimental method provided by the present invention, a pressure sensor, an asphalt pump and a pneumatic mechanism are all electrically connected to the control mechanism in the experimental device, so that the ejection pressure of the asphalt can be obtained in real time. Monitoring and timely adjustment have improved the control accuracy of the experimental device, and avoided the problems of poor fog sealing effect and inaccurate experimental results caused by untimely and inaccurate asphalt injection pressure monitoring; The driving motor is electrically connected to the control mechanism, so that the speed of the driving motor can be monitored and adjusted in time, which improves the control accuracy of the experimental device and avoids poor fog sealing effect caused by untimely monitoring of the driving motor and inaccurate control of the operating speed of the device. , The problem of inaccurate experimental results.

3. The indoor small-scale asphalt synchronous crushing stone experiment device and the experimental method thereof provided by the present invention are small in size and simple in structure, and are suitable for small-scale indoor experiments.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is the overall structure schematic diagram of indoor small-scale asphalt synchronous crushing stone experimental device in the present invention;

Fig. 2 is a schematic diagram of the pneumatic principle of the indoor small-scale asphalt synchronous crushing stone experimental device in the present invention;

Among them, 1-gravel silo, 2-gravel spreader, 3-asphalt storage tank, 4-asphalt pump, 5-pneumatic mechanism, 6-frame, 7-control mechanism, 8-guide rail, 9-asphalt spraying Rod, 10-walking wheel, 11-rotating shaft, 12-driving motor, 13-first pipeline, 14-opening and closing valve of material gate, 15-pneumatic opening and closing valve, 16-air compressor, 17-triple piece of air circuit , 18-pressure sensor, 19-second pipeline, 20-asphalt spray port.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The purpose of the present invention is to provide an indoor small-scale asphalt synchronous gravel experimental device and its experimental method with small volume, rich functions, high control precision, good fog sealing effect and accurate experimental results, so that the volume of the existing fog sealing layer spraying equipment The problems of large size, single function and poor control precision can be solved.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-2, the present invention provides a kind of indoor small-scale asphalt synchronous crushing stone experimental device, including frame 6, gravel spreading mechanism, asphalt spraying mechanism, walking drive mechanism and control mechanism arranged on the frame 6. Mechanism 7, the crushed stone spreading mechanism includes a connected crushed stone silo 1 and a crushed stone spreader 2, and the asphalt spraying mechanism includes an asphalt storage tank 3, an asphalt pump 4 and an asphalt spraying rod 9 connected in sequence through pipelines , the asphalt spray bar 9 is provided with at least one asphalt spray port 20, the travel drive mechanism includes a drive motor 12, a rotating shaft 11, a road wheel 10 and a guide rail 8 connected in sequence, the rotating shaft 11 and the frame 6 The control mechanism 7 is electrically connected with the crushed stone spreader 2 , the asphalt pump 4 and the driving motor 12 respectively through a bearing movable connection.

Wherein, the crushed stone spreader 2 includes a crushed stone spreading switch, a crushed stone spreading roller and a crushed stone spreading motor arranged in the crushed stone hopper 1, the crushed stone spreading switch is electrically connected with the control mechanism 7, and when carrying out crushing stone spreading, the control Mechanism 7 controls the gravel spreading switch to be turned on, and the gravel spreading motor is electrically connected to the control mechanism 7. When gravel spreading is performed, the control mechanism 7 controls the gravel spreading motor to start, and the gravel spreading motor drives the gravel spreading roller to move, and the gravel spreading roller moves. The spreading roller spreads the sand or crushed stones coming out of the crushed stone silo 1; the length of the asphalt spray bar 9 is properly adjusted according to the size of the available area in the room. Corresponding adjustments can be made. Preferably, the number of asphalt spraying ports 20 is 8; the rotating shaft 11 includes a driving shaft and a driven shaft, both of which are connected with the frame 6, and the driving motor 12 is connected with the driving shaft. connected, the number of walking wheels 10 is 4; emulsified asphalt or modified emulsified asphalt can be placed in the asphalt storage tank 3, that is, the asphalt storage tank 3 can be two separate tanks, or two mutual separate cavities. In the present invention, by adopting the method of setting the asphalt spraying mechanism and the crushed stone spreading mechanism in the same experimental device, the asphalt spraying work and the crushed stone spreading work can be carried out synchronously, which avoids that the asphalt spraying work and the crushed stone spreading work cannot be carried out synchronously and cause the experiment The problem of complex operation process and poor combination effect of crushed stone and asphalt improves the effect of fog sealing, thereby improving the experimental effect.

In the present invention, a first pipeline 13 and a second pipeline assembly are arranged between the asphalt pump 4 and the asphalt spraying rod 9, and one end of the first pipeline 13 is connected in series with the second pipeline assembly , the other end of the first pipeline 13 is connected with the asphalt pump 4, the second pipeline assembly includes at least one second pipeline 19, each of the second pipeline 19 is connected to one of the The asphalt spray ports 20 are connected. Simultaneously, in order to accurately control the asphalt flow rate of each asphalt spraying port 20, in the present invention, a material gate opening and closing valve 14 is all arranged on each of the second pipelines 19, and the material gate opening and closing valve 14 is connected with the material gate opening and closing valve 14. The control mechanism 7 is electrically connected, and the control mechanism 7 controls the opening and closing of the opening and closing valve 14 of the material gate.

In the present invention, the second pipeline 19 is provided with a pressure sensor 18, and the pressure sensor 18 is used to detect the fluid pressure in the second pipeline 19; 4 and the pneumatic mechanism 5 are both electrically connected to the control mechanism 7, so that the asphalt spray pressure can be monitored and adjusted in time, which improves the control accuracy of the experimental device and avoids fog caused by untimely and inaccurate monitoring of the asphalt spray pressure. Poor sealing effect and inaccurate experimental results.

In order to improve the sealing performance of the pipeline, a pneumatic opening and closing valve 15 is provided on the first pipeline 13 in the present invention, the pneumatic opening and closing valve 15 is electrically connected with the control mechanism 7, and the pneumatic opening and closing is controlled by the control mechanism 7 The opening and closing of the valve 15 realizes the opening and closing of the first pipeline 13; preferably, the pneumatic opening and closing valve 15 includes a pneumatic normally open valve and a pneumatic normally closed valve.

When a plurality of asphalt spray ports 20 work at the same time or when the pressure required for the experiment is too high, only by controlling the asphalt flow rate of the asphalt pump 4 to increase or decrease the ejection pressure of asphalt is not enough to meet the high pressure demand of the device. For this reason, In the present invention, a pneumatic mechanism 5 is also connected to the first pipeline 13, and the pneumatic mechanism 5 is electrically connected to the control mechanism 7. The pneumatic mechanism 5 provides gas pressure for the asphalt in the first pipeline 13, avoiding asphalt spraying. The problem of insufficient pressure is solved, and the function and scope of application of the device are also increased. Wherein, the pneumatic mechanism 5 in the present invention includes a connected air compressor 16 and an air path triple piece 17 .

In the present invention, the traveling drive mechanism is provided with a rotational speed sensor, the rotational speed sensor is used to detect the rotational speed of the drive motor 12 , and the rotational speed sensor is electrically connected to the control mechanism 7 . That is to say, the speed sensor is set in the experimental device, and the driving motor 12 is electrically connected to the control mechanism 7, so that the rotating speed of the driving motor 12 can be monitored and adjusted in time, the control accuracy of the experimental device is improved, and the monitoring of the driving motor 12 is avoided. Untimely and inaccurate control of device operating speed lead to poor fog sealing effect and inaccurate test results.

The present invention also provides an experimental method using the above-mentioned indoor small-scale asphalt synchronous gravel experimental device, comprising the following steps:

Pour sand or gravel into the gravel silo 1, and put the emulsified asphalt or modified emulsified asphalt into the asphalt storage tank 3;

Start the asphalt pump 4, gravel spreader 2 and drive motor 12 of the travel drive mechanism through the control mechanism 7, wherein the drive motor 12 drives the device to move, and the asphalt pump 4 supplies emulsified asphalt or modified emulsified asphalt to the asphalt spray rod 9 , and the pressure of the emulsified asphalt or modified emulsified asphalt entering the asphalt spray bar 9 is detected by the pressure sensor 18, the pressure sensor 18 transmits the pressure value to the control mechanism 7, and when the pressure value exceeds the preset threshold, the control mechanism 7 controls the The asphalt pump 4 reduces the supply of emulsified asphalt or modified emulsified asphalt; when the pressure value is lower than the preset threshold, the control mechanism 7 controls the asphalt pump 4 to increase the supply of emulsified asphalt or modified emulsified asphalt, and/or controls The mechanism 7 controls a pneumatic mechanism 5 to pressurize the emulsified asphalt or modified emulsified asphalt pumped out by the asphalt pump 4; the gravel spreader 2 spreads gravel on the surface of the object after spraying the emulsified asphalt or modified emulsified asphalt; After the gravel spreading is completed, spray emulsified asphalt or modified emulsified asphalt on the gravel layer;

Complete asphalt synchronized gravel work.

In the present invention, the walking drive mechanism is provided with a rotational speed sensor, which detects the rotational speed of the drive motor 12 through the rotational speed sensor, and transmits the rotational speed value to the control mechanism 7, and the control mechanism 7 controls the rotational speed of the drive motor 12 through the rotational speed value. , to adjust the running speed of the device.

In the present invention, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention; meanwhile, for those of ordinary skill in the art, according to the present invention The idea of the invention will have changes in the specific implementation and scope of application. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. a kind of indoor small pitch synchronous breakstone experimental provision, it is characterised in that including frame, be arranged in the frame Crushed stone spreading mechanism, asphalt distribution mechanism, hoofing part mechanism and controlling organization, the crushed stone spreading mechanism include what is be connected Rubble feed bin and road-metal spreading apparatus, the asphalt distribution mechanism include bituminous pitch storing tank, the bitumenpump being sequentially connected by pipeline With asphalt distribution bar, be provided with least one asphalt distribution mouth on the asphalt distribution bar, the hoofing part mechanism include according to Secondary connected motor, rotating shaft, road wheel and guide rail, the rotating shaft are flexibly connected with the frame by bearing, the control Mechanism processed electrically connects with the road-metal spreading apparatus, the bitumenpump and the motor respectively.

2. indoor small pitch synchronous breakstone experimental provision according to claim 1, it is characterised in that the bitumenpump with The first pipeline and the second pipeline assembly, one end of first pipeline and the described second pipe are provided between the asphalt distribution bar Road component is connected in series, and the other end of first pipeline is connected with the bitumenpump, and second pipeline assembly is included extremely Few second pipeline, every second pipeline are connected with an asphalt distribution mouth.

3. indoor small pitch synchronous breakstone experimental provision according to claim 2, it is characterised in that every described second A bin gate is provided with pipeline and opens and closes valve, the bin gate opens and closes valve and electrically connected with the controlling organization.

4. indoor small pitch synchronous breakstone experimental provision according to claim 3, it is characterised in that second pipeline On be provided with pressure sensor, the pressure sensor is used to detect the Fluid pressure in second pipeline.

5. indoor small pitch synchronous breakstone experimental provision according to claim 2, it is characterised in that first pipeline On be provided with Pneumatic opening valve, the Pneumatic opening valve electrically connects with the controlling organization.

6. the indoor small pitch synchronous breakstone experimental provision according to claim 2 or 4, it is characterised in that described first Pipeline is also associated with a pneumatic mechanism, and the pneumatic mechanism electrically connects with the controlling organization.

7. indoor small pitch synchronous breakstone experimental provision according to claim 6, it is characterised in that the pneumatic mechanism Including the air compressor machine and gas circuit three linked piece being connected.

8. indoor small pitch synchronous breakstone experimental provision according to claim 1, it is characterised in that the hoofing part Speed probe is provided with mechanism, the speed probe is used for the rotating speed for detecting the motor, the revolution speed sensing Device electrically connects with the controlling organization.

9. a kind of experimental method of indoor small pitch synchronous breakstone experimental provision, it is characterised in that comprise the following steps：

Sand or rubble are poured into rubble feed bin, emulsified asphalt or modified emulsifying asphalt are put into bituminous pitch storing tank；

Start the motor of bitumenpump, road-metal spreading apparatus and hoofing part mechanism by controlling organization, wherein, motor Driving device moves, while bitumenpump supplies emulsified asphalt or modified emulsifying asphalt into asphalt distribution bar, and is passed by pressure Sensor detection enters the pressure of emulsified asphalt or modified emulsifying asphalt in asphalt distribution bar, and pressure sensor passes to pressure value Controlling organization, when pressure value exceedes predetermined threshold value, controlling organization controls the bitumenpump to reduce emulsified asphalt or modified emulsifying The quantity delivered of pitch；When pressure value is less than predetermined threshold value, controlling organization controls the bitumenpump increase emulsified asphalt or modification The quantity delivered of emulsified asphalt, and/or controlling organization control the emulsified asphalt or modification that a pneumatic mechanism pumped out to the bitumenpump Emulsified asphalt pressurizes；The road-metal spreading apparatus is to dispensing rubble on body surface after sprinkling emulsified asphalt or modified emulsifying asphalt； After the completion of crushed stone spreading, then emulsified asphalt or modified emulsifying asphalt are sprayed on metalling；

Complete the work of pitch synchronous breakstone.

10. the experimental method of indoor small pitch synchronous breakstone experimental provision according to claim 9, it is characterised in that Speed probe is provided with the hoofing part mechanism, the rotating speed of motor is detected by the speed probe, and will Tachometer value passes to controlling organization, and controlling organization controls the rotating speed of motor, the operation of adjusting means by the tachometer value Speed.