Shearer walking part engagement performance simulation test device

Abstract

The present application relates to a kind of coal winning machine walking part meshing performance simulation test device, including fixed base, pin row, guide shoe support seat, test walking wheel and linear drive mechanism, pin row extends and is fixed on fixed base, the lower portion of guide shoe support seat is equipped with guide slot, the structure size of guide slot is set with reference to the guide slot of real guide shoe of coal winning machine walking part, guide shoe support seat is embraced on pin row by its guide slot and with pin row front and back sliding fit, test walking wheel is installed in the upper portion of guide shoe support seat and extends left and right, test walking wheel is engaged with pin row, linear drive mechanism is installed on fixed base, the moving end of linear drive mechanism is connected with guide shoe support seat, linear drive mechanism drives guide shoe support seat to move back and forth.The present application is used to simulate the matching state of multiple components of coal winning machine walking part, provides basis for the design of coal winning machine walking part, especially walking wheel and guide shoe, and verifies.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of test device, for verifying the meshing performance of the walking part of coal mining machine, belong to coal mining equipment technical field. BACKGROUND

[0002] The walking part of coal mining machine is an important component of coal mining machine, mainly provides power for the walking of coal mining machine, is at the end of the walking system of coal mining machine, mainly includes walking wheel, pin row and guiding slide shoe and other parts.Walking wheel is engaged with pin row and promotes the walking of coal mining machine, and the meshing performance is directly related to the stability of the operation of coal mining machine.Guiding slide shoe is embraced on pin row and plays the role of bearing and guiding, and its embracing size directly affects the performance of coal mining machine, in addition, after long-term wear, it directly affects the meshing center distance height of walking wheel and pin row, and then affects the meshing performance of walking system, so the meshing performance of the walking part of coal mining machine directly affects the normal use of coal mining machine.

[0003] At present, there is no mature coal mining machine walking part meshing performance simulation test device available. SUMMARY

[0004] The purpose of the present application is to provide a kind of coal mining machine walking part meshing performance simulation test device, which can be used to simulate the meshing state of walking wheel and pin row, the matching condition of guiding slide shoe and pin row, the meshing condition of walking wheel and pin row after the wear of guiding slide shoe, the stress and fluctuation of walking system in the walking process and the like.

[0005] The main technical scheme of the present application is as follows:

[0006] A kind of coal mining machine walking part meshing performance simulation test device, including fixed base, pin row, guiding slide shoe support seat, test walking wheel and linear drive mechanism, the pin row is fixedly installed on the fixed base and extends forward and backward, the lower part of the guiding slide shoe support seat is provided with a guide groove, the structure size of the guide groove is set with reference to the guide groove of the real guiding slide shoe of the walking part of coal mining machine, the guiding slide shoe support seat is embraced on the pin row through the guide groove thereon and is in forward and backward sliding cooperation with the pin row, the upper part of the guiding slide shoe support seat is installed with left and right extending wheel shaft, the test walking wheel is sleeved on the wheel shaft and can rotate relative to the wheel shaft, the test walking wheel is engaged with the pin row, the linear drive mechanism is installed on fixed base, and the moving end of linear drive mechanism is fixedly connected relative to guiding slide shoe support seat, the linear drive mechanism drives the guiding slide shoe support seat to move back and forth.

[0007] The upper part of the guiding slide shoe support seat is provided with left and right two support frames, and the left and right shaft segments of the wheel shaft are respectively installed in the shaft mounting holes on the left and right two support frames.

[0008] The shaft mounting hole can be a rectangular hole. A center distance adjustment shim is installed below the axle in the shaft mounting hole. A threaded through hole is provided on the support frame above the shaft mounting hole. A screw is installed in the threaded through hole. The screw and the center distance adjustment shim fix the corresponding shaft segment of the axle in the corresponding shaft mounting hole.

[0009] The axle can be a stepped axle with a thicker middle section and thinner left and right sections, and the test walking wheel is installed on the middle section of the axle.

[0010] There are two push cylinders, left and right. The cylinder lugs at the extended ends of the cylinder rods are respectively fitted onto the left and right shaft sections of the wheel axle. Each of the left and right shaft sections of the wheel axle is fitted with an anti-slip end cap. Each anti-slip end cap is fixed to the wheel axle by a threaded connector.

[0011] The coal mining machine walking mechanism meshing performance simulation test device is also equipped with a hydraulic pressure sensor, which is installed on the push cylinder.

[0012] The fixed base can be L-shaped, including a base plate and a side plate. The pin is installed on the base plate, and one end of the cylinder of the push cylinder is connected to the side plate.

[0013] The pin is detachably and fixedly installed on the fixed base.

[0014] Both ends of the pin row are connected to the fixed base by through-pins, and the corresponding pins extend to the left and right. At least one of the pins is equipped with a force sensor.

[0015] The beneficial effects of this invention are:

[0016] The meshing test device of the present invention can be used to simulate the meshing state of the traveling wheel and the pin row, the cooperation between the guide shoe and the pin row, the meshing state after the guide shoe is worn, and the force and fluctuation of the traveling system during the traveling process, etc., providing a basis and verification for the design of the traveling part of the coal mining machine, especially the traveling wheel and the guide shoe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the coal mining machine traveling mechanism meshing performance simulation test device of the present invention;

[0018] Figure 2 for Figure 1 A longitudinal sectional view of the wheel axis during the test drive.

[0019] Figure label:

[0020] 1. Fixed base; 2. Pin shaft; 3. Guide shoe support seat; 4. Force sensor; 5. Center distance adjustment pad; 6. Connecting bolt; 7. Connecting nut; 8. Anti-slip end cap; 9. Wheel axle; 10. Test walking wheel; 11. Pushing cylinder; 12. Oil pressure sensor; 13. Pin row. Detailed Implementation

[0021] like Figure 1 , 2 As shown, this invention discloses a simulation test device for the meshing performance of a coal mining machine's traveling mechanism (hereinafter referred to as a meshing test device), comprising a fixed base 1, a pin row 13, a guide shoe support 3, a test traveling wheel 10, and a linear drive mechanism. The pin row extends forward and backward and is fixedly mounted on the fixed base. The lower part of the guide shoe support is provided with a forward and backward extending guide groove, the structural dimensions of which are set with reference to the guide groove of the actual guide shoe of the coal mining machine's traveling mechanism. The guide shoe support surrounds the pin row through its guide groove and slides in a forward and backward engagement with the pin row. A left-right extending axle 9 is mounted on the upper part of the guide shoe support, and the test traveling wheel is fitted onto the axle and can rotate relative to the axle. The test traveling wheel meshes with the pin row. The linear drive mechanism is mounted on a fixed base. The moving end of the linear drive mechanism is fixedly connected to the guide shoe support. The linear drive mechanism drives the guide shoe support to move back and forth, and the guide shoe support then drives the test wheel to move. Since the test wheel is engaged with the fixed pin, the test wheel also rotates around the wheel axle.

[0022] In this embodiment, the inner surface of the guide groove includes a bottom guide surface, a left guide surface, and a left top guide surface connected in sequence, and also includes a right top guide surface and a right guide surface connected in sequence. The bottom guide surface, the left guide surface, and the left top guide surface surround the left upright plate of the pin row from the bottom, left, and top directions and slide in engagement with the left upright plate. The right top guide surface and the right guide surface surround the right upright plate of the pin row from the top and right directions and slide in engagement with the right upright plate. There is an opening between the bottom guide surface and the right guide surface, which serves as the opening of the guide groove. Some of the teeth of the test wheel extend downward from between the left and right top guide surfaces and mesh with the pin row teeth.

[0023] The upper part of the guide shoe support base is provided with two support frames, left and right, and the left and right axle sections of the wheel axle are respectively installed in the axle mounting holes on the left and right support frames. The left and right support frames can be a symmetrical structure.

[0024] The meshing test device can be used to observe and verify the meshing performance between the test wheel and the pin assembly.

[0025] The meshing test device can be used to verify the matching degree between the guide slipper and the pin assembly.

[0026] The meshing test device can provide verification for the qualitative analysis of the guide opening dimensions B and C of the actual guide shoe.

[0027] The shaft mounting hole is rectangular. A center distance adjusting shim 5 is installed below the axle in the shaft mounting hole. A vertical threaded through hole is provided on the support frame above the shaft mounting hole, and a screw is installed in the threaded through hole. The screw and the center distance adjusting shim clamp and fix the corresponding axle segment in the corresponding shaft mounting hole. By changing the center distance adjusting shim to different thicknesses, the height of the axle changes, and the center distance changes accordingly. The thicker the center distance adjusting shim, the larger the center distance.

[0028] The axle is a stepped axle with a thicker central section and thinner left and right sections. The test wheel is mounted on the central section of the axle. The left and right sections are supported in the mounting holes on the left and right sides.

[0029] The center height A of the test walking wheel and the pin assembly can be adjusted using a center distance adjustment shim. Adjusting the engagement height A simulates the engagement state after the guide shoe has worn down.

[0030] The linear drive mechanism preferably adopts a pusher cylinder 11, which extends forward and backward, with one end connected to the fixed base and the other end fixedly connected to the guide shoe support.

[0031] The push cylinder has two parts, left and right, and the cylinder lugs at the extended ends of the cylinder rods are respectively fitted onto the left and right shaft sections of the wheel axle.

[0032] Each of the left and right axle sections is fitted with an anti-slip end cap 8, and each anti-slip end cap is fixed to the axle by a threaded connector. In the embodiment shown in the attached drawings, the anti-slip end caps are fixed to the axle by connecting bolts 6 and connecting nuts 7. The connecting bolts 6 are inserted into and pass through the axle from one end, and the connecting nuts 7 are threaded onto the connecting bolts 6 from the other end of the axle, clamping the axle. The anti-slip end caps are located on the outside of the cylinder lugs to prevent the two cylinder lugs from shifting to the left or right.

[0033] The push cylinder is also equipped with a hydraulic pressure sensor 12. This sensor primarily detects the pressure in the two chambers of the push cylinder, and then calculates the force on the cylinder, thereby calculating the meshing force and enabling real-time monitoring of changes in the meshing force. These readings reflect the meshing state of the walking system, providing data for analyzing its meshing performance. For example, if the hydraulic pressure sensor detects that the pressure in the rodless chamber of the push cylinder is P1 and the pressure in the rod chamber is P2, then the meshing force F = [P1 * D] 2 -P2*(D 2 -d 2 )]π / 4, where D is the diameter of the piston of the push cylinder and d is the diameter of the piston rod of the push cylinder.

[0034] In this embodiment, the fixed base is L-shaped and includes a base plate and a side plate. The pin is installed on the base plate, and one end of the cylinder of the push cylinder is connected to the side plate.

[0035] The pin is preferably detachably and fixedly mounted on the fixed base.

[0036] Both ends of the pin array are connected to the fixed base via through-pins 2. The corresponding pins extend laterally, and a force sensor 4 is installed at at least one of the pins. By sensing the force on the pins during the movement of the wheel, the magnitude and fluctuation of the meshing force between the test wheel and the pin array can be inferred, providing data for meshing performance analysis. In this embodiment, the force sensor is a strain gauge, mounted on the fixed base and in contact with the shaft hole of the corresponding pin. A power and data cable is routed through a slit on the fixed base. The pin is primarily subjected to force in the walking direction and exhibits periodic fluctuations with changes in the meshing position.

Claims

1. A simulation test device for the meshing performance of the traveling mechanism of a coal mining machine, characterized in that: The system includes a fixed base, a pin array, a guide shoe support, a test travel wheel, and a linear drive mechanism. The pin array extends forward and backward and is fixedly mounted on the fixed base. The lower part of the guide shoe support has a guide groove, the structural dimensions of which are based on the guide groove of the actual guide shoe of the coal mining machine's traveling mechanism. The guide shoe support surrounds the pin array through its guide groove and slides back and forth with the pin array. A left-right extending axle is mounted on the upper part of the guide shoe support. The test travel wheel is fitted onto the axle and can rotate relative to it. The test travel wheel meshes with the pin array. The linear drive mechanism is mounted on a fixed base. The moving end of the linear drive mechanism is fixedly connected to the guide shoe support. The linear drive mechanism drives the guide shoe support to move back and forth. The upper part of the guide shoe support is provided with two left and right support frames. The left and right shaft segments of the wheel axle are respectively installed in the shaft mounting holes on the left and right support frames. The shaft mounting holes are rectangular holes. A center distance adjustment shim is installed below the wheel axle in the shaft mounting hole. The support frame above the shaft mounting hole is provided with a threaded through hole. A screw is installed in the threaded through hole. The screw and the center distance adjustment shim fix the corresponding shaft segments of the wheel axle in the corresponding shaft mounting holes.

2. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 1, characterized in that: The axle is a stepped axle with a thicker middle section and thinner left and right sections, and the test walking wheel is installed on the middle section of the axle.

3. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 2, characterized in that: The linear drive mechanism adopts a pusher cylinder, which extends forward and backward. One end of the pusher cylinder is connected to the fixed base, and the other end is fixedly connected to the guide shoe support.

4. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 3, characterized in that: There are two push cylinders, left and right. The cylinder lugs at the extended ends of the cylinder rods are respectively fitted onto the left and right shaft sections of the wheel axle. Each of the left and right shaft sections of the wheel axle is fitted with an anti-slip end cap. Each anti-slip end cap is fixed to the wheel axle by a threaded connector.

5. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 4, characterized in that: It is also equipped with a hydraulic pressure sensor, which is installed on the push cylinder.

6. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 5, characterized in that: The fixed base is L-shaped and includes a base plate and a side plate. The pin is installed on the base plate, and one end of the cylinder of the push cylinder is connected to the side plate.

7. The simulation test device for the meshing performance of the traveling mechanism of a coal mining machine as described in claims 1, 2, 3, 4, 5, or 6, characterized in that: The pin is detachably and fixedly installed on the fixed base.

8. The coal mining machine traveling mechanism meshing performance simulation test device as described in claim 7, characterized in that: Both ends of the pin row are connected to the fixed base by through-pins, and the corresponding pins extend to the left and right. At least one of the pins is equipped with a force sensor to sense the force on the pin during the movement of the walking wheel, so as to infer the magnitude and fluctuation of the meshing force between the walking wheel and the pin row.

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