Comprehensive performance testing device for gear transmission system of coal mining machine

Abstract

The invention provides a coal mining machine gear transmission system comprehensive performance test device, which comprises a base, a first connecting pin shaft, a test platform, a servo electric cylinder and a second connecting pin shaft, and is characterized in that the test platform is connected with the base through the first connecting pin shaft, and the servo electric cylinder is connected with the test platform through the second connecting pin shaft. The test platform comprises a mounting platform and a variable speed motor, a straight tooth transmission case, a planetary transmission case, a coupler and a magnetic powder brake which are located on the mounting platform, the two ends of the same side of the straight tooth transmission case are connected with the variable speed motor and the planetary transmission case respectively, and the planetary transmission case is connected with the magnetic powder brake through the coupler. Different tests can be carried out by arranging different types of components, that is, the comprehensive performance test can be carried out on the gear transmission system of the coal mining machine by using the same test platform.

Description

Technical Field

[0001] The invention relates to the field of coal mining machines, and in particular to a comprehensive performance test device for a gear transmission system of a coal mining machine. Background Art

[0002] The rocker arm and traction box of the coal mining machine are typical gear transmission systems, which are the hub of the power transmission of the coal mining machine. During the processing or assembly of the coal mining machine, different processing equipment or operator levels will affect the accuracy of the coal mining machine gear transmission system; and the coal mining machine is in a harsh environment such as humidity and coal dust for a long time during use, rotating at medium or low speed, and subjected to various impact loads, which is prone to failures such as poor lubrication or abnormal wear.

[0003] Usually, it is necessary to build a test platform to diagnose the faults of coal mining machines. However, the analysis and verification of the test platform are single-sided, and most of the test platforms built are traditional general-purpose laboratory gearbox test platforms, which cannot comprehensively and accurately reflect the actual working conditions of the coal mining machine gear transmission system. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a comprehensive performance test device for the gear transmission system of a coal mining machine, which can accurately reflect the operating conditions of the gear transmission system of the coal mining machine and comprehensively monitor the faults of the gear transmission system.

[0005] The present application provides a comprehensive performance test device for a coal mining machine gear transmission system, comprising a base, a first connecting pin, a test platform, a servo electric cylinder and a second connecting pin. The test platform is connected to the base via the first connecting pin, and the servo electric cylinder is connected to the test platform via the second connecting pin.

[0006] Further, two or more base connection components are arranged at the edge of the base. The base connection components include bolts and nuts that match each other. Preferably, a plurality of grooves are arranged at the edge, and the base connection components are placed in the grooves.

[0007] Furthermore, it also includes a platform connector, which is vertically connected to the base, the test platform is connected to the platform connector via a first connecting pin, and both ends of the servo electric cylinder are connected to the base and the platform connector via a second connecting pin.

[0008] Furthermore, the test platform includes a mounting platform, a variable speed motor, a spur gear box, a planetary gear box, a coupling and a magnetic powder brake. The variable speed motor, spur gear box, planetary gear box, a coupling and a magnetic powder brake are located on the mounting platform. The two ends of the same side of the spur gear box are respectively connected to the variable speed motor and the planetary gear box, and the planetary gear box is connected to the magnetic powder brake through a coupling.

[0009] Furthermore, the spur gear transmission box includes a housing, an upper cover, and a one-shaft assembly and a six-shaft assembly connected in sequence, wherein the one-shaft assembly and the six-shaft assembly are located in a space formed by the housing and the upper cover.

[0010] Furthermore, the six-axis assembly includes a first bearing, a first bearing seat, a six-axis gear, a second bearing and a second bearing seat connected in sequence, and the six-axis gear is installed on the housing through the first bearing seat and the second bearing seat. By setting the coaxiality of the first bearing seat and the second bearing seat of the six-axis assembly, the housing deformation of the coal mining machine gear transmission system can be simulated; by installing different types of gears on the six-axis assembly, the gear test of the coal mining machine gear transmission system can be simulated; by installing different types of bearings, the bearing test of the coal mining machine gear transmission system can be simulated.

[0011] Furthermore, the first bearing is located outside the housing and is connected to the planetary transmission box.

[0012] Furthermore, the spur gear transmission box also includes a two-axis assembly, a three-axis assembly, a four-axis assembly, and a five-axis assembly which are sequentially connected between the one-axis assembly and the six-axis assembly.

[0013] Further, the servo electric cylinder includes a first servo electric cylinder and a second servo electric cylinder arranged crosswise. Preferably, one end of the first servo electric cylinder is connected to the platform connector via a second connecting pin, and the other end is connected to the test platform, and one end of the second servo electric cylinder is connected to the base via a second connecting pin, and the other end is connected to the test platform.

[0014] Furthermore, by setting the first servo electric cylinder and the second servo electric cylinder, the test platform swings between -30 and 50 degrees, so that the rocker arm of the coal mining machine is simulated at a swing angle of -30 to 50 degrees, and the lubrication state of the gear transmission system of the coal mining machine rocker arm when it is raised and lying down is tested.

[0015] To summarize, in the present application, the variable speed motor drives the planetary transmission box through the spur gear transmission box, and the magnetic powder brake transmits the braking torque to the spur gear transmission box and the planetary transmission box through the coupling to realize the loading of the gear transmission system. By setting different components, different tests can be carried out, that is, the same test platform can be used to carry out comprehensive performance tests on the coal mining machine gear transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a comprehensive performance test device for a coal mining machine gear transmission system of the present application is shown.

[0017] Figure 2 Shown is a schematic diagram of the structure of the test platform in this application.

[0018] Figure 3 A schematic diagram of the external structure of the spur gear box in this application is shown.

[0019] Figure 4 A schematic diagram of the internal structure of the spur gear box in this application is shown.

[0020] Figure 5 A schematic diagram of the structure of the six-axis assembly in this application is shown.

[0021] Component number description

[0022] 100-Comprehensive performance test device for coal mining machine gear transmission system

[0023] 1- base, 11- edge of base

[0024] 2-Base connection assembly

[0025] 3-First connecting pin

[0026] 4-test platform, 41-installation platform, 42-speed motor, 43-spur gear box, 431-housing, 432-upper cover, 433-single shaft assembly, 434-second shaft assembly, 435-third shaft assembly, 436-fourth shaft assembly, 437-fifth shaft assembly, 438-sixth shaft assembly, 4381-first bearing, 4382-first bearing seat, 4383-sixth shaft gear, 4384-second bearing, 4385-second bearing seat, 44-planetary gear box, 45-coupling, 46-magnetic powder brake

[0027] 5-servo electric cylinder, 51-first servo electric cylinder, 52-second servo electric cylinder

[0028] 6-Second connecting pin

[0029] 7-Platform connector DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] See also Figures 1 to 5. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] like Figure 1 As shown, a comprehensive performance test device 100 for a coal mining machine gear transmission system includes a base 1, a base connecting assembly 2, a first connecting pin 3, a test platform 4, a servo electric cylinder 5 and a second connecting pin 6.

[0033] Two or more base connection components 2 are arranged at the edge 11 of the base 1, so that the base is firmly mounted on the ground. Preferably, the base connection components 2 include bolts and nuts that match each other. In one embodiment, a plurality of grooves 12 are arranged at the edge 11 of the base 1, and the base connection components 2 are placed in the grooves 12, which reduces the floor space and also reduces the possibility of the base connection components 2 being hit.

[0034] The present application also includes a platform connector 7 vertically mounted to the base 1, and the test platform 4 is connected to the platform connector 7 via a first connecting pin 3 and rotates around the first connecting pin 3. The servo electric cylinder 5 is fixed to the base 1 and the platform connector 7 via a second connecting pin 6. The first connecting pin 3 and the second connecting pin 6 realize the mutual fixing between the base 1, the test platform 4 and the servo electric cylinder 5, and realize the reliable installation of the test platform 4 and the servo electric cylinder 5.

[0035] like Figure 2As shown, the test platform 4 includes a mounting platform 41, a variable speed motor 42, a spur gear box 43, a planetary gear box 44, a coupling 45 and a magnetic powder brake 46. The variable speed motor 42, the spur gear box 43, the planetary gear box 44, the coupling 45 and the magnetic powder brake 46 are all located on the mounting platform 41, and the two ends of the same side of the spur gear box 43 are respectively connected to the variable speed motor 42 and the planetary gear box 44, and the planetary gear box 44 is connected to the magnetic powder brake 46 through the coupling 45. The variable speed motor 42 provides power input for the comprehensive performance test device 100 of the gear transmission system of the coal mining machine, and the variable speed motor 42 drives the planetary gear box 44 through the spur gear box 43. The magnetic powder brake 46 transmits the braking torque to the spur gear box 43 and the planetary gear box 44 through the coupling 45 to realize the loading of the gear transmission system. The spur gearbox 43 and the planetary gearbox 44 are the main carriers for the comprehensive performance test of the gear transmission system. The reduction ratio of the test device is set by installing spur gearboxes and planetary gearboxes with different numbers of teeth to better match the state of the simulated rocker arm and traction drive system. The external load on the rocker arm and traction part of the coal mining machine can be simulated by adjusting the magnetic powder brake 46.

[0036] like Figure 3 to Figure 4 As shown, the spur gear transmission box 43 includes a housing 431, an upper cover 432, and a one-shaft assembly 433 and a six-shaft assembly 438 located in the housing 431. The one-shaft assembly 433 is connected to the variable speed motor 42 through a connecting shaft 4331, and the six-shaft assembly 438 is connected to the planetary transmission box 44. Figure 5 As shown, the six-axis assembly 438 includes a first bearing 4381, a first bearing seat 4382, a six-axis gear 4383, a second bearing 4384 and a second bearing seat 4385. The first bearing seat 4382 is located outside the housing 431 and is connected to the planetary transmission box 44. The six-axis gear 4383 is installed on the housing 431 through the first bearing seat 4382 and the second bearing seat 4385. The simulation of the housing deformation of the coal mining machine gear transmission system can be achieved by setting the coaxiality of the first bearing seat 4382 and the second bearing seat 4385. The six-axis gear 4383 is replaceable, and different types of gears can be selected as needed to simulate the gear test of the coal mining machine gear transmission system, such as different types of gears with broken teeth, tooth surface bonding, tooth surface wear, etc. The first bearing 4381 and the second bearing 4383 are replaceable, and different first bearings and / or second bearings can be selected as needed to simulate the bearing test of the coal mining machine gear transmission system, such as different types of bearings with different oil gaps, different matching accuracy, inner and outer ring peeling, cage fracture, roller loss, etc.

[0037] In one embodiment, the upper cover 432 is made of transparent acrylic material to facilitate the status of the six components in the shell.

[0038] In another embodiment, two shaft assemblies 434, three shaft assemblies 435, four shaft assemblies 436 and five shaft assemblies 437 are further included between the one shaft assembly 433 and the six shaft assembly 438. Among them, the one shaft assembly 433, the two shaft assemblies 434 and the three shaft assemblies 435 are the first stage transmission system, and the four shaft assemblies 436, the five shaft assemblies 437 and the six shaft assemblies 438 are the second stage transmission system, which is used to simulate the two-stage six-shaft gear transmission of the rocker arm and traction transmission system.

[0039] like Figure 1 As shown, the servo electric cylinder 5 includes a first servo electric cylinder 51 and a second servo electric cylinder 52 which are cross-arranged, and play the role of supporting the test platform and coordinating the simulation of the lifting of the rocker arm. One end of the first servo electric cylinder 51 is connected to the platform connector 7 through the second connecting pin 6, and the other end is connected to the mounting platform 41. One end of the second servo electric cylinder 52 is connected to the base 1 through the second connecting pin 6, and the other end is connected to the mounting platform 41. Preferably, the other end of the first servo electric cylinder 51 is connected to the edge of the mounting platform 41, and the other end of the second servo electric cylinder 52 is connected to the center position of the mounting platform 41. By controlling the first servo electric cylinder 51 and the second servo electric cylinder 52, the experimental platform is swung between -30 and 50°, which can simulate the height adjustment of the rocker arm of the coal mining machine and the lubrication test of the gear transmission system in the lying state.

[0040] In the comprehensive performance test device for the gear transmission system of the coal mining machine of the present application, the variable speed motor drives the planetary transmission box through the spur gear box, and the magnetic powder brake transmits the braking torque to the spur gear box and the planetary transmission box through the coupling to realize the loading of the gear transmission system. The shell deformation of the gear transmission system of the coal mining machine can be simulated by setting the coaxiality of the first bearing seat and the second bearing seat of the six-axis assembly; the gear test of the gear transmission system of the coal mining machine can be simulated by installing different types of gears on the six-axis assembly; the bearing test of the gear transmission system of the coal mining machine can be simulated by installing different types of bearings on the six-axis assembly; the swing angle state of the coal mining machine rocker arm of -30 to 50° can be simulated by controlling the servo electric cylinder, and the lubrication state of the gear transmission system of the coal mining machine can be tested when the rocker arm of the coal mining machine is raised and lying down.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A comprehensive performance test device for a coal mining machine gear transmission system, characterized in that: The test platform comprises a base, a first connecting pin, a test platform, a servo electric cylinder and a second connecting pin. The test platform is connected to the base via the first connecting pin, and the servo electric cylinder is connected to the test platform via the second connecting pin.

2. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 1, characterized in that: Two or more base connection components are arranged at the edge of the base.

3. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 2, characterized in that: The base connection assembly includes bolts and nuts that match each other.

4. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 2, characterized in that: A plurality of grooves are arranged at the edge, and the base connection components are placed in the grooves.

5. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 1, characterized in that: It also includes a platform connector, which is vertically connected to the base. The test platform is connected to the platform connector via the first connecting pin, and both ends of the servo electric cylinder are connected to the base and the platform connector via the second connecting pin.

6. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 1, characterized in that: The test platform includes a mounting platform, a variable speed motor, a spur gear box, a planetary gear box, a coupling and a magnetic powder brake. The variable speed motor, the spur gear box, the planetary gear box, the coupling and the magnetic powder brake are located on the mounting platform. The two ends of the same side of the spur gear box are respectively connected to the variable speed motor and the planetary gear box, and the planetary gear box is connected to the magnetic powder brake through the coupling.

7. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 6, characterized in that: The spur gear transmission box comprises a housing, an upper cover, and a one-shaft assembly and a six-shaft assembly connected in sequence, wherein the one-shaft assembly and the six-shaft assembly are located in a space formed by the housing and the upper cover.

8. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 7, characterized in that: The six-axis assembly includes a first bearing, a first bearing seat, a six-axis gear, a second bearing and a second bearing seat which are connected in sequence, and the six-axis gear is mounted on the housing through the first bearing seat and the second bearing seat.

9. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 8, characterized in that: The first bearing is located outside the housing and connected to the planetary transmission box.

10. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 6, characterized in that: The spur gear transmission box also includes a two-axis assembly, a three-axis assembly, a four-axis assembly, and a five-axis assembly which are sequentially connected between the one-axis assembly and the six-axis assembly.

11. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 5, characterized in that: The servo electric cylinder comprises a first servo electric cylinder and a second servo electric cylinder which are arranged crosswise.

12. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 11, characterized in that: One end of the first servo electric cylinder is connected to the platform connector via the second connecting pin, and the other end is connected to the test platform; one end of the second servo electric cylinder is connected to the base via the second connecting pin, and the other end is connected to the test platform.

13. The comprehensive performance test device for the gear transmission system of a coal mining machine according to claim 12, characterized in that: The test platform swings between -30 and 50 degrees.

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