Chain haulage coal cutter dragline system simulation test device

Abstract

The present application relates to a kind of chain haulage coal mining machine towrope system simulation test device, wherein first, second slider respectively with first, second linear guide sliding fit, coal mining machine simulation model and towrope trolley simulation model are respectively fixed on first, second slider, the output shaft of first variable frequency motor and first vertical bearing seat each coaxially installed with first sprocket, first chain is wound on first sprocket and forms chain transmission with it, the output shaft of second variable frequency motor and second vertical bearing seat each coaxially installed with second sprocket, second chain is wound on second sprocket and forms chain transmission with it, first, second chain is respectively fixedly connected with coal mining machine simulation model and towrope trolley simulation model, towrope simulation model is arranged in U shape after passing through the pulley on towrope trolley simulation model, one end is fixed on coal mining machine simulation model, the other end is relative to the one end of first linear guide fixed.The present application can provide theoretical basis and design reference for chain haulage coal mining machine towrope system design.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of coal cutter towed cable system simulation test device, specifically is the towed cable system simulation test device of chain traction coal mining machine. BACKGROUND

[0002] When automatic fully mechanized coal face coal mining machine runs, power cable moves with coal mining machine, if power cable does not cooperate with coal mining machine operation, it can lead to power cable being crushed, damage even break, lead to frequent maintenance and replacement of power cable, directly affect the efficiency of automatic production of coal mining machine.Especially chain traction coal mining machine, because the stability of the running speed of chain traction coal mining machine is poor, so that power cable is more easily crushed, damaged even broken.Therefore, a kind of power cable automatic towed device (hereinafter referred to as towed cable system) suitable for chain traction coal mining machine needs to be designed, so that power cable can run cooperatively with coal mining machine, to avoid damaging power cable.But at present, there is lack of design standard in the design of chain traction coal mining machine towed cable system, even lack of specific logic control sequence and parameter as reference. SUMMARY

[0003] The purpose of the present application is to provide a kind of chain traction coal mining machine towed cable system simulation test device, to simulate the working process of the towed cable system of chain traction coal mining machine, by carrying out simulation test, the logic control sequence and part of parameters of chain traction coal mining machine towed cable system are researched, to provide theoretical basis and design reference for chain traction coal mining machine towed cable system design.

[0004] The main technical scheme of the present application is:

[0005] The chain traction coal mining machine towline system simulation test device comprises a coal mining machine operation simulation assembly, a towline device operation simulation assembly and a towline simulation model, the coal mining machine operation simulation assembly comprises a coal mining machine simulation model, a first variable frequency motor, a first chain wheel, a first chain, a first vertical bearing seat, a first linear guide rail and a first sliding block, the first sliding block is in sliding fit with the first linear guide rail, the coal mining machine simulation model is fixed on the first sliding block, the output shaft of the first variable frequency motor and the first vertical bearing seat are each fixedly installed with the first chain wheel in a same axis, the first chain is wound on the two first chain wheels and forms chain transmission with the first chain wheels, the first chain is fixedly connected with the coal mining machine simulation model, the towline device operation simulation assembly comprises a towline trolley simulation model, a second variable frequency motor, a second chain wheel, a second chain, a second vertical bearing seat, a second linear guide rail and a second sliding block, the second sliding block is in sliding fit with the second linear guide rail, the towline trolley simulation model is fixed on the second sliding block, the output shaft of the second variable frequency motor and the second vertical bearing seat are each fixedly installed with the second chain wheel in a same axis, the second chain is wound on the two second chain wheels and forms chain transmission with the second chain wheels, the second chain is fixedly connected with the towline trolley simulation model, the first linear guide rail and the second linear guide rail are arranged in parallel, a pulley is installed on the towline trolley simulation model, the towline simulation model is arranged in a U shape after passing through the pulley, one end of the towline simulation model is fixed relative to the coal mining machine simulation model, and the other end of the towline simulation model is fixed relative to one end of the first linear guide rail, and a tension sensor for detecting the tension of the towline simulation model is further installed on the towline trolley simulation model.

[0006] The chain traction coal mining machine towline system simulation test device further comprises a mounting bottom plate, and the first variable frequency motor, the first vertical bearing seat, the first linear guide rail, the second variable frequency motor, the second vertical bearing seat and the second linear guide rail are all mounted on the mounting bottom plate.

[0007] The first linear guide rail has two pieces arranged in parallel and spaced apart from each other, two first sliding blocks are mounted on each first linear guide rail, and the coal mining machine simulation model is mounted on the four first sliding blocks; the second linear guide rail has two pieces arranged in parallel and spaced apart from each other, two second sliding blocks are mounted on each second linear guide rail, and the towline trolley simulation model is mounted on the four second sliding blocks.

[0008] The first linear guide rail and the second linear guide rail both adopt optical axis guide rails.

[0009] The tension sensor can be indirectly mounted on the towline trolley simulation model through a sensor mounting bracket.

[0010] The other end of the towline simulation model can be fixed on a support, and the support is fixed on the mounting bottom plate.

[0011] A chain can be used as the towline simulation model.

[0012] The beneficial effects of the present application are:

[0013] The present application can simulate the running state of the towline system of the chain traction coal mining machine, i.e. the towline simulation model is always in a certain tension state, the moving speed of the towline trolley simulation model is adjusted through the feedback signal of the tension sensor, the speed difference between the towline trolley simulation model and the coal mining machine simulation model is within a certain reasonable range, so as to avoid the towline being crushed, damaged or even broken. The present application simulates the running state of the towline system of the chain traction coal mining machine at a very low cost, and has a completely equivalent working principle, which provides a theoretical basis and design parameters for the design of the towline system of the chain traction coal mining machine. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the front view of an embodiment of the present application;

[0015] Figure 2 is Figure 1 the left view of the embodiment shown.

[0016] Reference signs: 1. mounting base plate; 2. first vertical bearing seat; 3. first chain wheel; 4. first chain; 5. first linear guide rail; 6. pulley; 7. tension sensor; 8. sensor mounting frame; 9. towline trolley simulation model; 10. towline simulation model; 11. coal mining machine simulation model; 12. screw; 13. mounting sheet metal; 14. first variable frequency motor; 15. second sliding block; 16. support; 17. second vertical bearing seat; 18. second linear guide rail; 19. second chain; 20. second chain wheel; 21. second variable frequency motor. DETAILED DESCRIPTION

[0017] The present application discloses a chain traction coal mining machine towline system simulation test device (which can be simply referred to as a towline system simulation test device), as shown in Figure 1 , 2As shown, it comprises a shearer running simulation assembly, a drag chain device running simulation assembly and a drag chain simulation model 10. The shearer running simulation assembly comprises a shearer simulation model 11, a first variable frequency motor 14, a first chain wheel 3, a first chain 4, a first vertical bearing seat 2, a first linear guide 5 and a first slider. The first slider is in sliding fit with the first linear guide, and the shearer simulation model is fixed on the first slider so that the shearer simulation model can freely move back and forth along the first linear guide. The output shaft of the first variable frequency motor and the first vertical bearing seat are each coaxially fixedly installed with the first chain wheel, and the first chain is wound around the two first chain wheels and forms chain transmission with the two first chain wheels. The first chain is fixedly connected with the shearer simulation model through a screw 12. The first variable frequency motor outputs power to drive the chain transmission, and then drives the shearer simulation model to accelerate, decelerate or reverse along the first linear guide. The drag chain device running simulation assembly comprises a drag chain trolley simulation model 9, a second variable frequency motor 21, a second chain wheel 20, a second chain 19, a second vertical bearing seat 17, a second linear guide 18 and a second slider 15. The second slider is in sliding fit with the second linear guide, and the drag chain trolley simulation model is fixed on the second slider so that the drag chain trolley simulation model can freely move back and forth along the second linear guide. The output shaft of the second variable frequency motor and the second vertical bearing seat are each coaxially fixedly installed with the second chain wheel, and the second chain is wound around the two second chain wheels and forms chain transmission with the two second chain wheels. The second chain is fixedly connected with the drag chain trolley simulation model through a screw 12. The second variable frequency motor outputs power to drive the chain transmission, and then drives the drag chain trolley simulation model to accelerate, decelerate or reverse along the second linear guide. The first linear guide and the second linear guide are arranged in parallel.

[0018] A pulley 6 is also installed on the drag chain trolley simulation model, and the drag chain simulation model 10 is arranged in a U shape after passing through the pulley, with one end fixed relative to the shearer simulation model 11 (for example, fixed on the shearer simulation model through a screw) and the other end fixed relative to one end of the first linear guide. Through the pulley and the drag chain simulation model, the shearer simulation model and the drag chain trolley simulation model are connected with each other. A tension sensor 7 for detecting the tension of the drag chain simulation model is also installed on the drag chain trolley simulation model. When the drag chain system simulation test is performed, the shearer simulation model moves back and forth, and the drag chain trolley simulation model follows in the same direction. When the difference between the moving speeds of the shearer simulation model and the drag chain trolley simulation model changes, the tension of the drag chain simulation model will change, and the tension of the drag chain simulation model will also change accordingly. During the test, the change of the tension value detected by the tension sensor reflects the change of the above-mentioned difference between the moving speeds.

[0019] The chain traction coal mining machine towline system simulation test device further comprises a mounting bottom plate 1, and the first variable frequency motor, the first vertical bearing seat, the first linear guide rail, the second variable frequency motor, the second vertical bearing seat and the second linear guide rail are all mounted on the mounting bottom plate. The two ends of the first linear guide rail and the second linear guide rail can be fixed on the mounting bottom plate by means of mounting sheet metal 13.

[0020] In the embodiment shown in the drawings, the first linear guide rail has two pieces, which are arranged in parallel and spaced apart from each other, two first sliders are mounted on each first linear guide rail, and the coal mining machine simulation model is mounted on the four first sliders. Similarly, the second linear guide rail has two pieces, which are arranged in parallel and spaced apart from each other, two second sliders are mounted on each second linear guide rail, and the towline trolley simulation model is mounted on the four second sliders.

[0021] In the embodiment, the first linear guide rail and the second linear guide rail both adopt optical axis guide rails.

[0022] The tension sensor 7 can be indirectly mounted on the towline trolley simulation model through the sensor mounting bracket 8 and move back and forth along the second linear guide rail together with the towline trolley simulation model.

[0023] The other end of the towline simulation model can be fixed on a support 16, and the support is fixed on the mounting bottom plate. The position of the support is close to one end of the first linear guide rail.

[0024] The towline simulation model is made of chain and can be made of plastic material or metal material.

[0025] The tension sensor can adopt a pin shaft tension sensor.

[0026] The present application can simulate the running process and state of the chain traction coal mining machine towline system, mainly simulating the following of the towline trolley to the coal mining machine and the active regulation of the following speed in the process. By using the present application for test research, for example, the tensioning state of the towline simulation model can be judged by the detection result of the tension sensor, when it is not in a reasonable tensioning state, the running speed and direction of the coal mining machine simulation model and / or the towline trolley simulation model can be adjusted by the speed regulation of the first and second variable frequency motors, so that the speed difference between the coal mining machine simulation model and the towline trolley simulation model is within a certain reasonable range, so as to keep the towline simulation model in a reasonable tensioning state all the time.

[0027] For example, when the coal mining machine simulation model advances, the towline simulation model becomes loose, when the detection value of the tension sensor is lower than the set value, the towline trolley simulation model can be controlled to advance to moderately tension the towline simulation model; when the detection value of the tension sensor is higher than the set value, it indicates that the towline simulation model is in an over-tensioned state, the towline trolley simulation model can be controlled to slow down, so that the towline simulation model is always in a reasonable tensioned state, avoiding damage to the towline simulation model.

[0028] The present application can reproduce and equivalently simulate the working principle of the chain traction coal mining machine towline system by using relatively simple structure and lower cost, and the simulation test by using the present application can obtain the logical control sequence and parameters of the chain traction coal mining machine towline system, thereby providing theoretical basis and design parameters for the design of the chain traction coal mining machine towline system.

Claims

1. A chain haulage coal cutter dragline system simulation test device, characterized in that: The coal mining machine operation simulation assembly, the towline device operation simulation assembly and the towline simulation model, the coal mining machine operation simulation assembly comprises a coal mining machine simulation model, a first variable frequency motor, a first chain wheel, a first chain, a first vertical bearing seat, a first linear guide rail and a first sliding block, the first sliding block is in sliding fit with the first linear guide rail, the coal mining machine simulation model is fixed on the first sliding block, the output shaft of the first variable frequency motor and the first vertical bearing seat are coaxially fixedly installed with the first chain wheel respectively, the first chain is wound on the two first chain wheels and forms chain transmission with the first chain wheels, the first chain is fixedly connected with the coal mining machine simulation model, the towline device operation simulation assembly comprises a towline trolley simulation model, a second variable frequency motor, a second chain wheel, a second chain, a second vertical bearing seat, a second linear guide rail and a second sliding block, the second sliding block is in sliding fit with the second linear guide rail, the towline trolley simulation model is fixed on the second sliding block, the output shaft of the second variable frequency motor and the second vertical bearing seat are coaxially fixedly installed with the second chain wheel respectively, the second chain is wound on the two second chain wheels and forms chain transmission with the second chain wheels, the second chain is fixedly connected with the towline trolley simulation model, the first linear guide rail and the second linear guide rail are arranged in parallel, a pulley is installed on the towline trolley simulation model, the towline simulation model is arranged in a U shape after passing through the pulley, one end of the towline simulation model is fixed relative to the coal mining machine simulation model, and the other end of the towline simulation model is fixed relative to one end of the first linear guide rail, and a tension sensor for detecting tension received by the towline simulation model is further installed on the towline trolley simulation model.

2. The chain-pulling coal cutter dragline system simulation test device according to claim 1, characterized in that: The first variable frequency motor, the first vertical bearing seat, the first linear guide rail, the second variable frequency motor, the second vertical bearing seat and the second linear guide rail are all installed on the installation base plate.

3. The chain-pulling coal cutter dragline system simulation test device according to claim 1, characterized in that: The first linear guide rail has two pieces arranged in parallel and at intervals, two first sliding blocks are installed on each first linear guide rail, and the coal mining machine simulation model is installed on the four first sliding blocks; the second linear guide rail has two pieces arranged in parallel and at intervals, two second sliding blocks are installed on each second linear guide rail, and the towline trolley simulation model is installed on the four second sliding blocks.

4. The chain haulage coal cutter conveyor dragline system simulation test device according to claim 3, characterized in that: The first linear guide rail and the second linear guide rail are both optical axis guide rails.

5. The chain-pulling coal cutter dragline system simulation test device according to claim 1, characterized in that: The tension sensor is indirectly installed on the towline trolley simulation model through a sensor mounting bracket.

6. A chain haulage coal cutter conveyor dragline system simulation test apparatus as claimed in claim 2, 3, 4 or 5 wherein: The other end of the towline simulation model is fixed on a support, and the support is fixed on the installation base plate.

7. The chain-pulling coal cutter dragline system simulation test device according to claim 1, 2, 3, 4 or 5, characterized in that: The chain is used as the towline simulation model.

8. The chain-pulling coal cutter dragline system simulation test device according to claim 6, characterized in that: The chain is used as the towline simulation model.

9. The chain-pulling coal cutter dragline system simulation test device according to claim 1, 2, 3, 4 or 5, characterized in that: The tension sensor is a pin shaft tension sensor.

10. The chain-pulling coal cutter dragline system simulation test device according to claim 6, characterized in that: The tension sensor is a pin shaft tension sensor.

11. The chain-pulling coal cutter dragline system simulation test device according to claim 7, characterized in that: The tension sensor is a pin shaft tension sensor.

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