A test platform with flip and pitch compound motion

Abstract

This application discloses a test platform with a combined rollover and pitching motion, relating to the technical field of coal mining machine testing. The test platform with a combined rollover and pitching motion comprises a base, a first drive member, and a second drive member. The base is fixedly connected to a foundation, a rollover platform is rotatably connected to the base, and a pitching platform is rotatably connected to the rollover platform, with a rotation axis perpendicular to the rotation axis of the rollover platform. The first drive member is used to drive the rollover platform to rotate; and the second drive member is disposed on the rollover platform to drive the pitching platform to rotate. This application is effective in simulating the working conditions of a coal mining machine operating in an inclined coal seam.

Description

Technical Field

[0001] The present application relates to the technical field of coal mining machine testing, and in particular to a testing platform with flipping and pitching compound motion. Background Art

[0002] A coal mining machine is a device that automatically mines coal. Using a coal mining machine can reduce the workload of workers and improve coal mining efficiency.

[0003] After the coal mining machine is designed and produced, it needs to be tested before it is used for field mining to verify whether its functionality and stability meet the design requirements, reduce accidents during the actual coal mining process, and reduce the maintenance cost of the coal mining machine.

[0004] The working conditions of the coal shearer are complex. The inclination of the working face and the inclination of the coal seam cause the coal shearer to engage in over-and-under mining and climbing mining. In order to meet the design and testing requirements of coal shearers used in steeply inclined coal seams, large over-and-under mining seams, and large over-and-under mining seams, it is necessary to simulate the actual operation of the coal shearer under the above-mentioned complex working conditions and conduct inspection and testing of the coal shearer to facilitate the design and testing of the coal shearer. Summary of the Invention

[0005] In order to simulate the working conditions of a coal mining machine in an inclined coal seam, the present application provides a test platform with a combined flipping and pitching motion.

[0006] This application provides a test platform with flip and pitch compound motion, which adopts the following technical solutions:

[0007] A test platform with combined rollover and pitching motion, comprising a base, the base being fixedly connected to a foundation, a rollover platform being rotatably connected to the base, and a pitching platform being rotatably connected to the rollover platform, the pitching platform having a rotation axis perpendicular to the rotation axis of the rollover platform;

[0008] a first driving member, the first driving member being used to drive the flip platform to rotate;

[0009] A second driving member is provided on the flip platform for driving the pitching platform to rotate.

[0010] By adopting the above technical solution, the first driving member drives the flipping platform to rotate, thereby driving the pitching platform to rotate, so that the test platform can simulate the coal seam inclination working condition when the coal mining machine is mining, thereby facilitating the testing of the coal mining machine; the second driving member drives the pitching platform to rotate, so that the pitching platform can rotate along the rotation axis perpendicular to the rotation axis of the flipping platform, so that the pitching platform can realize rotation in two directions, so that the test platform can provide more diversified inclination angles when simulating the coal seam working condition, so that the simulation test is more in line with the actual situation.

[0011] Optionally, the first driving member is a first telescopic cylinder, one end of which is rotationally connected to the flip platform and the other end is rotationally connected to the machine base; the second driving member is a second telescopic cylinder, one end of which is rotationally connected to the pitch platform and the other end is rotationally connected to the flip platform.

[0012] By adopting the above technical solution, the first telescopic cylinder drives the flip platform to rotate, and the second telescopic cylinder drives the pitch platform to rotate, which can stabilize the rotation process of the flip platform and the pitch platform and make the test platform less likely to be damaged.

[0013] Optionally, the rotation axis of the machine base and the flip platform passes through the center of gravity of the flip platform, and the rotation axis of the flip platform and the pitching platform passes through the center of gravity of the pitching platform.

[0014] By adopting the above technical solution, when the flip platform and the pitch platform are in a horizontal state, the driving force required by the first telescopic cylinder and the second telescopic cylinder is relatively small, and when the flip platform and the pitch platform rotate, the distance that the first telescopic cylinder and the second telescopic cylinder need to extend is relatively small, thereby reducing the driving capacity and maximum stroke requirements of the first telescopic cylinder and the second telescopic cylinder.

[0015] Optionally, a limiting portion is rotatably connected to a side of the pitch platform away from the second driving member, the rotation axis of the limiting portion is parallel to the rotation axis of the pitch platform, and a third driving member for driving the limiting portion to rotate is provided on the test platform.

[0016] By adopting the above technical solution, the limiting part is driven to rotate by the third driving member, so that the limiting part can be rotated to limit the movement of the coal shearer on the test platform, thereby reducing the situation where the coal shearer directly slides off the test platform and causes damage to the coal shearer, thereby reducing the test cost.

[0017] Optionally, a connecting plate is fixedly connected to the limiting portion, an end of the connecting plate away from the limiting portion is rotatably connected to a connecting rod, and an end of the connecting rod away from the connecting plate is rotatably connected to the flip platform.

[0018] By adopting the above technical solution, when rotation occurs between the pitching platform and the flipping platform, the connecting rod and the connecting plate rotate, and the connecting plate drives the limiting part to rotate, so that the limiting part can rotate to be inclined with the flipping platform, thereby limiting the movement of the coal mining machine on the test platform; the rotation of the pitching platform drives the limiting part to rotate, thereby realizing the restriction of the movement of the coal mining machine, reducing the use of the driving structure, and making the rotation control of the limiting part simpler; at the same time, when the weight of the coal mining machine causes the limiting plate to rotate, it will drive the pitching platform to rotate in the direction of returning to the horizontal, thereby further reducing the possibility of the coal mining machine slipping from the test platform.

[0019] Optionally, a support plate is connected to the machine base, and a limiting plate is rotatably connected to the support plate for abutting the pitch platform. The rotation axis of the limiting plate is parallel to the rotation axis of the flip platform, and a fourth driving member is provided on the support plate for driving the limiting plate to rotate.

[0020] By adopting the above technical solution, the limiting plate can be driven by the fourth driving member to rotate until it abuts against the pitch platform, thereby limiting the movement of the coal mining machine on the pitch platform, so that the coal mining machine will not slip from the test platform when being tested on the test platform, thereby reducing damage to the coal mining machine.

[0021] Optionally, the fourth driving member is a third telescopic cylinder, one end of the third telescopic cylinder is rotatably connected to the support plate, and the other end is rotatably connected to a side of the limiting plate away from the pitch platform.

[0022] By adopting the above technical solution, the support plate is driven to rotate by the third telescopic cylinder, so that the bearing capacity of the support plate is increased, which can better meet the demand of restricting the movement of the coal mining machine.

[0023] Optionally, the support plate is slidably connected to the base, a rotating shaft is rotatably connected to the base, the rotating shaft is fixedly connected to the flip platform, a coaxial driving gear is fixedly connected to the rotating shaft, and a rack portion for engaging with the driving gear is provided on the support plate.

[0024] By adopting the above technical solution, when the first telescopic cylinder drives the flipping platform to rotate so that the pitching platform tilts, the rotating shaft rotates together with the flipping platform, and drives the driving gear to rotate, thereby driving the support plate to move through the rack part, so that the limiting plate on the support plate slides with the support plate to close to the pitching platform, and the support plate is driven to rotate by the rotation of the flipping platform. On the one hand, the length of the third telescopic cylinder that needs to be telescoped can be reduced. On the other hand, the driving force of the coal mining machine acting on the limiting plate can make the limiting plate tend to move away from the pitching platform, thereby driving the support plate to slide, driving the driving gear to rotate, and making the flipping platform tend to return to the horizontal, thereby further reducing the occurrence of the coal mining machine slipping off the test platform.

[0025] Optionally, a simulation groove is provided on a side of the pitching platform away from the flipping platform.

[0026] By adopting the above technical solution, materials can be filled in the simulation groove to simulate the strata that the coal mining machine contacts when moving under real working conditions, so that the simulation test conducted using the test platform can be closer to the real working conditions when the coal mining machine is running, making the test results more accurate.

[0027] In summary, this application has at least one of the following beneficial effects:

[0028] 1. The test platform can rotate in two directions by rotating the flip platform and the pitch platform, which enables the test platform to provide more diversified tilt angles, making the simulation test more in line with the real situation;

[0029] 2. When the shearer is tested on the test platform, it is not easy to slide off the test platform, reducing the risk of damage caused by sliding of the shearer;

[0030] 3. The simulation slots on the pitching platform can be filled with materials to simulate the actual strata that the shearer contacts, making the test closer to the actual working conditions and the experimental results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0032] Figure 2 This is a schematic diagram of the overall structure of Example 2 of the present application;

[0033] Figure 3 It is a schematic diagram of the overall structure from another perspective of Example 2 of the present application.

[0034] Explanation of the accompanying drawings: 1. Machine base; 2. Flipping platform; 21. First telescopic cylinder; 22. Rotating axis; 221. Driving gear; 3. Pitching platform; 31. Second telescopic cylinder; 32. Simulation slot; 4. Limiting part; 41. Connecting plate; 42. Connecting rod; 5. Limiting plate; 51. Support plate; 511. Rack part; 52. Third telescopic cylinder. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] Example 1:

[0037] The present invention discloses a test platform with a composite motion of flipping and pitching, referring to Figure 1, including a machine base 1, which is used to be fixedly connected to the foundation, a flip platform 2 is rotatably connected to the machine base 1, and the rotation axes of the machine base 1 and the flip platform 2 are horizontal, and a pitch platform 3 with a rotation axis perpendicular to the rotation axis of the flip platform 2 is rotatably connected to the flip platform 2; a first driving member and a second driving member are provided on the test platform, the first driving member is used to drive the flip platform 2 to rotate, and the second driving member is used to drive the pitch platform 3 to rotate.

[0038] The first driving member drives the flipping platform 2 to rotate, thereby driving the pitching platform 3 to rotate, so that the test platform can simulate the coal seam inclination condition when the coal mining machine is mining, thereby facilitating the testing of the coal mining machine; the second driving member drives the pitching platform 3 to rotate, so that the pitching platform 3 can rotate along the rotation axis perpendicular to the rotation axis of the flipping platform 2, so that the pitching platform 3 can realize rotation in two directions, so that the test platform can provide more diversified inclination angles when simulating the coal seam working condition, so that the simulation test is more in line with the actual situation.

[0039] Reference Figure 1 The first driving member is specifically the first telescopic cylinder 21, one end of the first telescopic cylinder 21 is rotatably connected to the flip platform 2, and the other end is rotatably connected to the machine base 1. The second driving member is specifically the second telescopic cylinder 31, one end of the second telescopic cylinder 31 is rotatably connected to the pitching platform 3, and the other end is rotatably connected to the flip platform 2; driving the flip platform 2 to rotate by the first telescopic cylinder 21 and driving the pitching platform 3 to rotate by the second telescopic cylinder 31 can make the rotation process of the flip platform 2 and the pitching platform 3 stable, and at the same time make the test platform less likely to be damaged.

[0040] The rotation axis of the machine base 1 and the flip platform 2 passes through the center of gravity of the flip platform 2, and the rotation axis of the flip platform 2 and the pitching platform 3 passes through the center of gravity of the pitching platform 3; when the flip platform 2 and the pitching platform 3 are in a horizontal state, the driving force required by the first telescopic cylinder 21 and the second telescopic cylinder 31 is small, and when the flip platform 2 and the pitching platform 3 rotate, the distance that the first telescopic cylinder 21 and the second telescopic cylinder 31 need to extend is small, which reduces the driving capacity and maximum stroke requirements of the first telescopic cylinder 21 and the second telescopic cylinder 31.

[0041] The implementation principle of the test platform with a combined flipping and pitching motion in the embodiment of the present application is: the coal mining machine is placed on the pitching platform 3, the rotation angle of the flipping platform 2 is adjusted by the first telescopic cylinder 21, thereby driving the pitching platform 3 to rotate, and the rotation angle of the pitching platform 3 is adjusted by the second telescopic cylinder 31, so that the pitching platform 3 can realize rotation in two directions, thereby providing more diversified inclination angles for the simulation test of the coal mining machine, making the simulation test more in line with the actual situation.

[0042] Example 2:

[0043] During the actual use of the inventor, it was found that when the coal mining machine was tested on the test platform, since the test platform needed to simulate a large angle of the coal seam, the coal mining machine might slip from the test platform during the experiment, causing damage to the coal mining machine. For this reason, this application makes further improvements on this basis.

[0044] A test platform with a composite motion of flipping and pitching, which is different from Example 1 in that Figure 2 The side of the pitching platform 3 away from the second telescopic cylinder 31 is rotatably connected to the limiting part 4, and the limiting part 4 is fixedly connected to a connecting plate 41. The end of the connecting plate 41 away from the limiting part 4 is rotatably connected to a connecting rod 42, and the end of the connecting rod 42 away from the connecting plate 41 is rotatably connected to the flipping platform 2.

[0045] When the pitching platform 3 and the flipping platform 2 rotate, the connecting rod 42 and the connecting plate 41 rotate, and the connecting plate 41 drives the limiting part 4 to rotate, so that the limiting part 4 can rotate to be inclined with the flipping platform 2, thereby limiting the movement of the coal mining machine on the test platform, reducing the occurrence of the coal mining machine slipping off the test platform and causing damage to the coal mining machine, thereby reducing the test cost; the rotation of the pitching platform 3 drives the limiting part 4 to rotate, thereby realizing the restriction of the movement of the coal mining machine, reducing the use of the driving structure, and making the rotation control of the limiting part 4 simpler; at the same time, when the weight of the coal mining machine causes the limiting plate 5 to rotate, it will drive the pitching platform 3 to rotate in the direction of returning to the horizontal, thereby further reducing the possibility of the coal mining machine slipping off the test platform.

[0046] Reference Figure 2 and Figure 3 A support plate 51 is slidably connected to the machine base 1, and a rotating shaft 22 is rotatably connected to the machine base 1. The rotating shaft 22 is fixedly connected to the flip platform 2, and a driving gear 221 is coaxially fixedly connected to the rotating shaft 22. A rack portion 511 for engaging with the driving gear 221 is provided on the support plate 51, and a limiting plate 5 for abutting against the pitching platform 3 is rotatably connected to the support plate 51. A third telescopic cylinder 52 is connected to the support plate 51, and an end of the third telescopic cylinder 52 away from the support plate 51 is rotatably connected to a side of the limiting plate 5 away from the pitching platform 3.

[0047] The limiting plate 5 is driven by the third telescopic cylinder 52 to rotate until it abuts against the pitching platform 3, thereby limiting the movement of the coal shearer on the pitching platform 3, so that the coal shearer is not likely to slip off the test platform when being tested on the test platform, thereby reducing damage to the coal shearer; when the first telescopic cylinder 21 drives the turning platform 2 to rotate so that the pitching platform 3 tilts, the rotating shaft 22 rotates together with the turning platform 2, and drives the driving gear 221 to rotate, thereby driving the support plate 51 to move through the rack portion 511, so that the limiting plate 5 on the support plate 51 slides with the support plate 51 to be close to the pitching platform 3. The rotation of the turning platform 2 drives the support plate 51 to rotate, which, on the one hand, can reduce the length of the third telescopic cylinder 52 required to be extended and retracted. On the other hand, the driving force of the coal shearer on the limiting plate 5 can make the limiting plate 5 tend to move away from the pitching platform 3, thereby driving the support plate 51 to slide, driving the driving gear 221 to rotate, and making the turning platform 2 tend to return to the horizontal direction, thereby further reducing the coal shearer from slipping off the test platform, thereby reducing damage to the coal shearer.

[0048] Reference Figure 3 A simulation groove 32 is provided on the side of the pitching platform 3 away from the flipping platform 2; the simulation groove 32 can be filled with materials to simulate the stratum that the coal mining machine contacts when moving under real working conditions, so that the simulation test conducted using the test platform can be closer to the real working conditions when the coal mining machine is running, making the test results more accurate.

[0049] The implementation principle of the test platform with a combined flipping and pitching motion in the embodiment of the present application is as follows: when the pitching platform 3 rotates, the connecting rod 42 and the connecting plate 41 also rotate, and drive the limiting part 4 to rotate, so that the limiting part 4 can limit the movement of the coal mining machine; when the flipping platform 2 rotates, the rotating shaft 22 rotates together with the flipping platform 2, and drives the driving gear 221 to rotate, thereby driving the support plate 51 to slide, so that the limiting plate 5 moves toward the direction close to the pitching platform 3, and at the same time, the third telescopic cylinder 52 drives the limiting plate 5 to rotate toward the direction close to the pitching platform 3, and makes the limiting plate 5 press against the pitching platform 3, thereby limiting the movement of the coal mining machine. The movement of the coal mining machine on the pitching platform 3 is limited by the limiting part 4 and the limiting plate 5, thereby reducing the situation where the coal mining machine slips from the pitching platform 3 and causes damage to the coal mining machine.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A test platform with flip and pitch compound motion, characterized in that: include: A machine base (1), the machine base (1) being fixedly connected to a foundation, a turning platform (2) being rotatably connected to the machine base (1), and a pitching platform (3) being rotatably connected to the turning platform (2), the turning platform (2) having a rotation axis perpendicular to the rotation axis of the turning platform (2); A first driving member, the first driving member is used to drive the turning platform (2) to rotate; A second driving member, the second driving member being arranged on the tilting platform (2) and used for driving the pitching platform (3) to rotate; A support plate (51) is slidably connected to the machine base (1), a rotating shaft (22) is rotatably connected to the machine base (1), the rotating shaft (22) is fixedly connected to the flip platform (2), a driving gear (221) is coaxially fixedly connected to the rotating shaft (22), a rack portion (511) for engaging with the driving gear (221) is provided on the support plate (51), a limiting plate (5) for contacting the pitching platform (3) is rotatably connected to the support plate (51), a third telescopic cylinder (52) is connected to the support plate (51), and the third One end of the telescopic cylinder (52) away from the support plate (51) is rotatably connected to a side of the limiting plate (5) away from the pitching platform (3); when the first telescopic cylinder (21) drives the flipping platform (2) to rotate so that the pitching platform (3) tilts, the rotating shaft (22) rotates together with the flipping platform (2) and drives the driving gear (221) to rotate, thereby driving the support plate (51) to move through the rack portion (511), so that the limiting plate (5) on the support plate (51) slides with the support plate (51) to be close to the pitching platform (3).

2. The test platform with flip and pitch compound motion according to claim 1, characterized in that: The first driving member is a first telescopic cylinder (21), one end of the first telescopic cylinder (21) is rotatably connected to the turning platform (2), and the other end is rotatably connected to the machine base (1); the second driving member is a second telescopic cylinder (31), one end of the second telescopic cylinder (31) is rotatably connected to the pitching platform (3), and the other end is rotatably connected to the turning platform (2).

3. The test platform with flip and pitch compound motion according to claim 1, characterized in that: The rotation axis of the machine base (1) and the turning platform (2) passes through the center of gravity of the turning platform (2), and the rotation axis of the turning platform (2) and the pitching platform (3) passes through the center of gravity of the pitching platform (3).

4. The test platform with flip and pitch compound motion according to claim 1, characterized in that: A limiting portion (4) is rotatably connected to a side of the pitching platform (3) away from the second driving member, the rotation axis of the limiting portion (4) is parallel to the rotation axis of the pitching platform (3), and a third driving member for driving the limiting portion (4) to rotate is provided on the test platform.

5. The test platform with flip and pitch compound motion according to claim 4, characterized in that: A connecting plate (41) is fixedly connected to the limiting portion (4); an end of the connecting plate (41) away from the limiting portion (4) is rotatably connected to a connecting rod (42); and an end of the connecting rod (42) away from the connecting plate (41) is rotatably connected to the flip platform (2).

6. The test platform with flip and pitch compound motion according to claim 1, characterized in that: The rotation axis of the limiting plate (5) is parallel to the rotation axis of the turning platform (2).

7. The test platform with flip and pitch compound motion according to claim 1, characterized in that: A simulation groove (32) is provided on a surface of the pitching platform (3) away from the flipping platform (2).

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