A coal mine tramcar hoisting and transportation device

Abstract

A coal mine car hoisting and transportation device, comprising a cross beam, a first longitudinal beam, a second longitudinal beam, a main frame, a first screw elevator, and a second screw elevator. The main frame includes a parking bottom plate, a first side frame, and a second side frame. The bottoms of the first top beam in the first side frame and the second top beam in the second side frame are both connected to the top of the cross beam. The two end faces of the cross beam are respectively rotatably connected to the middle parts of the first longitudinal beam and the second longitudinal beam. The front end of the first longitudinal beam is connected to the middle part of the first inclined beam through the first screw elevator, and the front end of the second longitudinal beam is connected to the middle part of the third inclined beam through the second screw elevator. Sliding blocks that can slide along the transportation track are arranged at the bottoms of the second longitudinal beam and the first longitudinal beam. This design can adjust the angles between the main frame and the first longitudinal beam and the second longitudinal beam respectively through the first screw elevator and the second screw elevator, avoiding the front-back shaking of the transportation device due to the start and stop of the power device or other accidents during the transportation process.

Description

Technical Field

[0001] The present invention belongs to the technical field of mining machinery, and particularly relates to a coal mine car hoisting and transporting device, which is applicable to adjusting the angles between the main frame and the first longitudinal beam and between the first longitudinal beams in the transporting device, so that the device can operate stably under different working conditions. Background Art

[0002] At present, in open-pit coal mines, coal trucks are generally used for transportation. The excavated coal is transported from the bottom of the coal mine to the crushing station at the top of the mine pit for centralized processing. Although the straight-line distance between the coal mining point and the crushing station is not long, the coal trucks need to wind around the long mountain road in circles to reach the crushing station at the top of the slope. This method not only has a long transportation distance, low efficiency, high transportation cost, but also causes large vehicle wear, high maintenance cost, high carbon emissions and serious environmental pollution. The intelligent large-inclination track-type mine car transportation system can solve the above problems existing in the traditional open-pit coal mine coal transportation. However, in the current track-type mine car transportation system, the car body assembly for loading the mine cars is prone to front-back shaking and bumping due to the start-stop of the track-type mine car transportation system or other accidents during the transportation process, which affects the operation stability, safety and service life of the track-type mine car transportation system. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above problems existing in the prior art, and provide a coal mine car hoisting and transporting device that can adjust the angle of the main frame and prevent front-back shaking.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A coal mine car hoisting and transporting device, the hoisting and transporting device includes a cross beam, a first longitudinal beam, a second longitudinal beam, a main frame, a first screw elevator, and a second screw elevator. The main frame includes a parking bottom plate, a first side frame, and a second side frame. The first side frame and the second side frame are respectively located on both sides of the parking bottom plate. The first side frame includes a first top beam, a first inclined beam, and a second inclined beam. The second side frame includes a second top beam, a third inclined beam, and a fourth inclined beam. The front end and the rear end of the first top beam are respectively fixedly connected to the tops of the first inclined beam and the second inclined beam. The bottoms of the first inclined beam and the second inclined beam are respectively fixedly connected to the front end and the rear end of one side of the parking bottom plate. The front end and the rear end of the second top beam are respectively fixedly connected to the tops of the third inclined beam and the fourth inclined beam. The bottoms of the third inclined beam and the fourth inclined beam are respectively fixedly connected to the front end and the rear end of the other side of the parking bottom plate. The bottoms of the first top beam and the second top beam are both connected to the top of the cross beam. The two end faces of the cross beam are respectively rotatably connected to the middle parts of the first longitudinal beam and the second longitudinal beam. The front end of the first longitudinal beam is connected to the middle part of the first inclined beam through the first screw elevator. The front end of the second longitudinal beam is connected to the middle part of the third inclined beam through the second screw elevator. Sliding blocks that can slide along the transport track are arranged at the bottoms of the second longitudinal beam and the first longitudinal beam.

[0006] The main frame further includes a first baffle, a second baffle, a first electric telescopic assembly, a second electric telescopic assembly, a third electric telescopic assembly, and a fourth electric telescopic assembly. One side of the front end of the first baffle is connected to the middle part of the first inclined beam through the first electric telescopic assembly, and the other side of the front end is connected to the middle part of the third inclined beam through the second electric telescopic assembly. The rear end of the first baffle is movably connected to the front end of the parking bottom plate. The front end of the second baffle is movably connected to the rear end of the parking bottom plate. One side of the rear end of the second baffle is connected to the middle part of the second inclined beam through the third electric telescopic assembly, and the other side of the rear end is connected to the middle part of the fourth inclined beam through the fourth electric telescopic assembly. The first electric telescopic assembly, the second electric telescopic assembly, the third electric telescopic assembly, and the fourth electric telescopic assembly have the same structure.

[0007] The first electric telescopic assembly includes a motor and a telescopic connecting rod. The motor is installed on the mounting bracket arranged in the middle of the first inclined beam. The output end of the motor is in transmission cooperation with one end of the telescopic connecting rod. The telescopic end of the telescopic connecting rod is movably connected to one side of the front end of the first baffle.

[0008] Grooves matching the top of the cross beam are opened at the bottoms of the first top beam and the second top beam. A first spring shock absorber base and a second spring shock absorber base are installed at the bottom of the cross beam. The first spring shock absorber base is connected to the bottom of the first top beam through two spring shock absorbers. The second spring shock absorber base is connected to the bottom of the second top beam through two spring shock absorbers.

[0009] The lifting and transporting device further includes a first cantilever and a second cantilever. One end of the first cantilever is fixedly connected to the front end of the first longitudinal beam, and the other end of the first cantilever is movably connected to one end of the first screw lift. The other end of the first screw lift is movably connected to a first bracket arranged in the middle of the first inclined beam. One end of the second cantilever is fixedly connected to the front end of the second longitudinal beam, and the other end of the second cantilever is movably connected to one end of the second screw lift. The other end of the second screw lift is movably connected to a second bracket arranged in the middle of the third inclined beam.

[0010] The lifting and transporting device further includes a first pin shaft and a second pin shaft. First mounting holes and second mounting holes are axially formed at both ends of the cross beam respectively. Third mounting holes and fourth mounting holes are axially formed in the middle parts of the first longitudinal beam and the second longitudinal beam respectively. Both ends of the first pin shaft are inserted and matched with the first mounting hole and the third mounting hole respectively. Both ends of the second pin shaft are inserted and matched with the second mounting hole and the fourth mounting hole respectively.

[0011] A first bushing is sleeved outside the first pin shaft, and the end face of the first pin shaft and the end face of the first bushing are axially fixed by bolts. A second bushing is sleeved outside the second pin shaft, and the end face of the second pin shaft and the end face of the second bushing are axially fixed by bolts.

[0012] A spirit level is installed in the middle of the cross beam.

[0013] A speed reducer is installed on the motor.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. A coal mine car hoisting and transportation device of the present invention includes a cross beam, a first longitudinal beam, a second longitudinal beam, a main frame, a first screw elevator, and a second screw elevator. The main frame includes a parking bottom plate, a first side frame, and a second side frame. The bottoms of the first top beam in the first side frame and the second top beam in the second side frame are both connected to the top of the cross beam. The two end faces of the cross beam are respectively rotatably connected to the middle parts of the first longitudinal beam and the second longitudinal beam. The front end of the first longitudinal beam is connected to the middle part of the first inclined beam through the first screw elevator, and the front end of the second longitudinal beam is connected to the middle part of the third inclined beam through the second screw elevator. Sliding blocks that can slide along the transportation track are arranged at the bottoms of the second longitudinal beam and the first longitudinal beam. The structure of this transportation device is reasonably designed, with uniform stress, and the structural strength can meet the full load weight of 600 tons. When working, the mine car is driven onto the parking bottom plate, and it can move up or down along the transportation track through the sliding blocks under the drive of an external power device. During the transportation process, the angle between the first longitudinal beam and the main frame is adjusted by the first screw elevator, and the angle between the second longitudinal beam and the main frame is adjusted by the second screw elevator, avoiding the front and back shaking of the transportation device due to the start and stop of the power device or other accidents during the transportation process, keeping the main frame always in a vertical state, and improving the operation stability, safety, and service life of the entire system. Therefore, the present invention can adjust the angles between the main frame and the first longitudinal beam and the second longitudinal beam in the transportation device, prevent front and back shaking, thereby improving the operation stability, safety, and service life.

[0016] 2. In a coal mine car hoisting and transportation device of the present invention, the main frame further includes a first baffle, a second baffle, a first electric telescopic component, a second electric telescopic component, a third electric telescopic component, and a fourth electric telescopic component. One side of the front end of the first baffle is connected to the middle part of the first inclined beam through the first electric telescopic component, and the other side of the front end is connected to the middle part of the third inclined beam through the second electric telescopic component. The rear end of the first baffle is movably connected to the front end of the parking bottom plate. The front end of the second baffle is movably connected to the rear end of the parking bottom plate. One side of the rear end of the second baffle is connected to the middle part of the second inclined beam through the third electric telescopic component, and the other side of the rear end is connected to the middle part of the fourth inclined beam through the fourth electric telescopic component. The structures of the first electric telescopic component, the second electric telescopic component, the third electric telescopic component, and the fourth electric telescopic component are the same. After the mine car is driven onto the parking bottom plate, this design controls the first electric telescopic component and the second electric telescopic component to retract to drive the first baffle to lift, and controls the third electric telescopic component and the fourth electric telescopic component to retract to drive the second baffle to lift. The lifted first baffle and second baffle can prevent the mine car from slipping off the parking bottom plate. Therefore, the present invention can prevent the mine car from slipping off the parking bottom plate.

[0017] 3. In a coal mine car hoisting and transportation device of the present invention, grooves matching with the tops of the cross beams are provided at the bottoms of the first top beam and the second top beam in the main frame. The bottoms of the cross beams are provided with a first spring shock absorber base and a second spring shock absorber base. The first spring shock absorber base is connected to the bottom of the first top beam through two spring shock absorbers, and the second spring shock absorber base is connected to the bottom of the second top beam through two spring shock absorbers. This design assembles the cross beam with the first top beam and the second top beam in the main frame through the first spring shock absorber and the second spring shock absorber, which can effectively reduce the bumps during the transportation process of the transportation device. Therefore, the present invention can effectively reduce the bumps during the transportation process of the transportation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the present invention.

[0019] Figure 2 is the right view of the present invention.

[0020] Figure 3 is the left view of the present invention.

[0021] Figure 4 is the top view of the present invention.

[0022] Figure 5 is Figure 1 the assembly drawing of the middle cross beam with the first longitudinal beam and the second longitudinal beam.

[0023] In the figure, cross beam 1, first spring shock absorber base 11, second spring shock absorber base 12, spring shock absorber 13, first mounting hole 14, second mounting hole 15, first bushing 16, second bushing 17, level gauge 18, first longitudinal beam 2, third mounting hole 21, second longitudinal beam 3, sliding block 31, fourth mounting hole 32, main frame 4, parking floor 41, first side frame 42, first top beam 421, first inclined beam 422, second inclined beam 423, first bracket 424, second side frame 43, second top beam 431, third inclined beam 432, fourth inclined beam 433, second bracket 434, first baffle 44, second baffle 45, first electric telescopic assembly 46, motor 461, telescopic connecting rod 462, speed reducer 463, second electric telescopic assembly 47, third electric telescopic assembly 48, fourth electric telescopic assembly 49, first screw jack 5, second screw jack 6, first cantilever 7, second cantilever 8, first pin shaft 9, second pin shaft 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described below in conjunction with the accompanying drawings of the specification and the detailed embodiments.

[0025] Refer to Figures 1 to 5, a coal mine car hoisting and transporting device, the hoisting and transporting device includes a cross beam 1, a first longitudinal beam 2, a second longitudinal beam 3, a main frame 4, a first screw lift 5, and a second screw lift 6. The main frame 4 includes a parking bottom plate 41, a first side frame 42, and a second side frame 43. The first side frame 42 and the second side frame 43 are respectively located on both sides of the parking bottom plate 41. The first side frame 42 includes a first top beam 421, a first inclined beam 422, and a second inclined beam 423. The second side frame 43 includes a second top beam 431, a third inclined beam 432, and a fourth inclined beam 433. The front end and the rear end of the first top beam 421 are respectively fixedly connected to the tops of the first inclined beam 422 and the second inclined beam 423. The bottoms of the first inclined beam 422 and the second inclined beam 423 are respectively fixedly connected to the front end and the rear end of one side of the parking bottom plate 41. The front end and the rear end of the second top beam 431 are respectively fixedly connected to the tops of the third inclined beam 432 and the fourth inclined beam 433. The bottoms of the third inclined beam 432 and the fourth inclined beam 433 are respectively fixedly connected to the front end and the rear end of the other side of the parking bottom plate 41. The bottoms of the first top beam 421 and the second top beam 431 are both connected to the top of the cross beam 1. The two end faces of the cross beam 1 are respectively rotatably connected to the middle parts of the first longitudinal beam 2 and the second longitudinal beam 3. The front end of the first longitudinal beam 2 is connected to the middle part of the first inclined beam 422 through the first screw lift 5. The front end of the second longitudinal beam 3 is connected to the middle part of the third inclined beam 432 through the second screw lift 6. Sliding blocks 31 that can slide along the transport track are arranged at the bottoms of the second longitudinal beam 3 and the first longitudinal beam 2.

[0026] The main frame 4 further includes a first baffle 44, a second baffle 45, a first electric telescopic component 46, a second electric telescopic component 47, a third electric telescopic component 48, and a fourth electric telescopic component 49. One side of the front end of the first baffle 44 is connected to the middle part of the first inclined beam 422 through the first electric telescopic component 46, and the other side of the front end is connected to the middle part of the third inclined beam 432 through the second electric telescopic component 47. The rear end of the first baffle 44 is movably connected to the front end of the parking bottom plate 41. The front end of the second baffle 45 is movably connected to the rear end of the parking bottom plate 41. One side of the rear end of the second baffle 45 is connected to the middle part of the second inclined beam 423 through the third electric telescopic component 48, and the other side of the rear end is connected to the middle part of the fourth inclined beam 433 through the fourth electric telescopic component 49. The structures of the first electric telescopic component 46, the second electric telescopic component 47, the third electric telescopic component 48, and the fourth electric telescopic component 49 are the same.

[0027] The first electric telescopic assembly 46 includes a motor 461 and a telescopic connecting rod 462. The motor 461 is installed on the mounting bracket provided in the middle of the first inclined beam 422, and the output end of the motor 461 is in transmission cooperation with one end of the telescopic connecting rod 462. The telescopic end of the telescopic connecting rod 462 is movably connected to one side of the front end of the first baffle 44.

[0028] Grooves adapted to the top of the cross beam 1 are provided at the bottoms of the first top beam 421 and the second top beam 431. A first spring shock absorber base 11 and a second spring shock absorber base 12 are installed at the bottom of the cross beam 1. The first spring shock absorber base 11 is connected to the bottom of the first top beam 421 through two spring shock absorbers 13, and the second spring shock absorber base 12 is connected to the bottom of the second top beam 431 through two spring shock absorbers 13.

[0029] The lifting and transporting device further includes a first cantilever 7 and a second cantilever 8. One end of the first cantilever 7 is fixedly connected to the front end of the first longitudinal beam 2, the other end of the first cantilever 7 is movably connected to one end of the first screw lift 5, and the other end of the first screw lift 5 is movably connected to the first bracket 424 provided in the middle of the first inclined beam 422. One end of the second cantilever 8 is fixedly connected to the front end of the second longitudinal beam 3, the other end of the second cantilever 8 is movably connected to one end of the second screw lift 6, and the other end of the second screw lift 6 is movably connected to the second bracket 434 provided in the middle of the third inclined beam 432.

[0030] The lifting and transporting device further includes a first pin shaft 9 and a second pin shaft 10. First mounting holes 14 and second mounting holes 15 are axially provided at the two ends of the cross beam 1 respectively. Third mounting holes 21 and fourth mounting holes 32 are axially provided in the middle parts of the first longitudinal beam 2 and the second longitudinal beam 3 respectively. The two ends of the first pin shaft 9 are inserted and matched with the first mounting hole 14 and the third mounting hole 21 respectively, and the two ends of the second pin shaft 10 are inserted and matched with the second mounting hole 15 and the fourth mounting hole 32 respectively.

[0031] A first bushing 16 is sleeved outside the first pin shaft 9, and the end face of the first pin shaft 9 and the end face of the first bushing 16 are axially fixed by bolts. A second bushing 17 is sleeved outside the second pin shaft 10, and the end face of the second pin shaft 10 and the end face of the second bushing 17 are axially fixed by bolts.

[0032] A spirit level 18 is installed in the middle of the cross beam 1.

[0033] A speed reducer 463 is installed on the motor 461.

[0034] Embodiment 1:

[0035] See Figures 1 to 4, a coal mine car hoisting and transportation device, including a cross beam 1, a first longitudinal beam 2, a second longitudinal beam 3, a main frame 4, a first screw elevator 5, a second screw elevator 6, a first cantilever 7, and a second cantilever 8. The main frame 4 includes a parking bottom plate 41, a first side frame 42, and a second side frame 43. The first side frame 42 and the second side frame 43 are respectively located on both sides of the parking bottom plate 41. The first side frame 42 includes a first top beam 421, a first inclined beam 422, and a second inclined beam 423. The second side frame 43 includes a second top beam 431, a third inclined beam 432, and a fourth inclined beam 433. The front end and the rear end of the first top beam 421 are respectively fixedly connected to the tops of the first inclined beam 422 and the second inclined beam 423. The bottoms of the first inclined beam 422 and the second inclined beam 423 are respectively fixedly connected to the front end and the rear end of one side of the parking bottom plate 41. The front end and the rear end of the second top beam 431 are respectively fixedly connected to the tops of the third inclined beam 432 and the fourth inclined beam 433. The bottoms of the third inclined beam 432 and the fourth inclined beam 433 are respectively fixedly connected to the front end and the rear end of the other side of the parking bottom plate 41. The bottoms of the first top beam 421 and the second top beam 431 are both connected to the top of the cross beam 1. A level 18 is installed in the middle of the cross beam 1. The two end faces of the cross beam 1 are respectively rotatably connected to the middle parts of the first longitudinal beam 2 and the second longitudinal beam 3. The front end of the first longitudinal beam 2 is fixedly connected to one end of the first cantilever 7. The other end of the first cantilever 7 is movably connected to one end of the first screw elevator 5. The other end of the first screw elevator 5 is movably connected to a first bracket 424 arranged in the middle of the first inclined beam 422. The front end of the second longitudinal beam 3 is fixedly connected to one end of the second cantilever 8. The other end of the second cantilever 8 is movably connected to one end of the second screw elevator 6. The other end of the second screw elevator 6 is movably connected to a second bracket 434 arranged in the middle of the third inclined beam 432. Sliding blocks 31 that can slide along the transportation track are arranged at the bottoms of the second longitudinal beam 3 and the first longitudinal beam 2.

[0036] Embodiment 2:

[0037] The difference from Embodiment 1 is:

[0038] See Figures 1 to 4, the main frame 4 further includes a first baffle 44, a second baffle 45, a first electric telescopic component 46, a second electric telescopic component 47, a third electric telescopic component 48, and a fourth electric telescopic component 49. One side of the front end of the first baffle 44 is connected to the middle of the first inclined beam 422 through the first electric telescopic component 46, and the other side of the front end is connected to the middle of the third inclined beam 432 through the second electric telescopic component 47. The rear end of the first baffle 44 is movably connected to the front end of the parking floor 41. The front end of the second baffle 45 is movably connected to the rear end of the parking floor 41. One side of the rear end of the second baffle 45 is connected to the middle of the second inclined beam 423 through the third electric telescopic component 48, and the other side of the rear end is connected to the middle of the fourth inclined beam 433 through the fourth electric telescopic component 49.

[0039] Embodiment 3:

[0040] The difference from Embodiment 1 is that:

[0041] Reference Figure 2 、 Figure 4 , the structures of the first electric telescopic component 46, the second electric telescopic component 47, the third electric telescopic component 48, and the fourth electric telescopic component 49 are the same. The first electric telescopic component 46 includes a motor 461 and a telescopic connecting rod 462. The motor 461 is installed on the mounting bracket provided in the middle of the first inclined beam 422. A speed reducer 463 is installed on the motor 461. The output end of the motor 461 is in transmission cooperation with one end of the telescopic connecting rod 462. The telescopic end of the telescopic connecting rod 462 is movably connected to one side of the front end of the first baffle 44. The installation methods of the second electric telescopic component 47, the third electric telescopic component 48, and the fourth electric telescopic component 49 are similar to the installation method of the first electric telescopic component 46.

[0042] Embodiment 4:

[0043] The difference from Embodiment 1 is that:

[0044] Reference Figure 2 、 Figure 3 , grooves matching the top of the cross beam 1 are provided at the bottoms of the first top beam 421 and the second top beam 431. A first spring damper base 11 and a second spring damper base 12 are installed at the bottom of the cross beam 1. The first spring damper base 11 is connected to the bottom of the first top beam 421 through two spring dampers 13, and the second spring damper base 12 is connected to the bottom of the second top beam 431 through two spring dampers 13.

[0045] Embodiment 5:

[0046] The difference from Embodiment 1 is that:

[0047] SeeFigure 5 , the lifting and transporting device further includes a first pin shaft 9 and a second pin shaft 10. Both end portions of the cross beam 1 are axially provided with a first mounting hole 14 and a second mounting hole 15 respectively. The middle portions of the first longitudinal beam 2 and the second longitudinal beam 3 are axially provided with a third mounting hole 21 and a fourth mounting hole 32 respectively. Both ends of the first pin shaft 9 are inserted and matched with the first mounting hole 14 and the third mounting hole 21 respectively. Both ends of the second pin shaft 10 are inserted and matched with the second mounting hole 15 and the fourth mounting hole 32 respectively. A first bushing 16 is sleeved outside the first pin shaft 9. The end face of the first pin shaft 9 and the end face of the first bushing 16 are axially fixed by bolts. A second bushing 17 is sleeved outside the second pin shaft 10. The end face of the second pin shaft 10 and the end face of the second bushing 17 are axially fixed by bolts.

Claims

1. A lifting and transporting device for coal mine mine cars, characterized in that: The lifting and transporting device includes a cross beam (1), a first longitudinal beam (2), a second longitudinal beam (3), a main frame (4), a first screw lift (5), and a second screw lift (6). The main frame (4) includes a parking bottom plate (41), a first side frame (42), and a second side frame (43). The first side frame (42) and the second side frame (43) are respectively located on both sides of the parking bottom plate (41). The first side frame (42) includes a first top beam (421), a first inclined beam (422), and a second inclined beam (423). The second side frame (43) includes a second top beam (431), a third inclined beam (432), and a fourth inclined beam (433). The front end and the rear end of the first top beam (421) are respectively fixedly connected to the tops of the first inclined beam (422) and the second inclined beam (423). The bottoms of the first inclined beam (422) and the second inclined beam (423) are respectively fixedly connected to the front end and the rear end of one side of the parking bottom plate (41). The front end and the rear end of the second top beam (431) are respectively fixedly connected to the tops of the third inclined beam (432) and the fourth inclined beam (433). The bottoms of the third inclined beam (432) and the fourth inclined beam (433) are respectively fixedly connected to the front end and the rear end of the other side of the parking bottom plate (41). The bottoms of the first top beam (421) and the second top beam (431) are both connected to the top of the cross beam (1). The two end faces of the cross beam (1) are respectively rotatably connected to the middle parts of the first longitudinal beam (2) and the second longitudinal beam (3). The front end of the first longitudinal beam (2) is connected to the middle part of the first inclined beam (422) through the first screw lift (5). The front end of the second longitudinal beam (3) is connected to the middle part of the third inclined beam (432) through the second screw lift (6). Sliding blocks (31) that can slide along the transport track are provided at the bottoms of the second longitudinal beam (3) and the first longitudinal beam (2).

2. The hoisting and transporting device for coal mine mine cars according to claim 1, characterized in that: The main frame (4) further includes a first baffle (44), a second baffle (45), a first electric telescopic component (46), a second electric telescopic component (47), a third electric telescopic component (48), and a fourth electric telescopic component (49). One side of the front end of the first baffle (44) is connected to the middle part of the first inclined beam (422) through the first electric telescopic component (46), and the other side of the front end is connected to the middle part of the third inclined beam (432) through the second electric telescopic component (47). The rear end of the first baffle (44) is movably connected to the front end of the parking bottom plate (41). The front end of the second baffle (45) is movably connected to the rear end of the parking bottom plate (41). One side of the rear end of the second baffle (45) is connected to the middle part of the second inclined beam (423) through the third electric telescopic component (48), and the other side of the rear end is connected to the middle part of the fourth inclined beam (433) through the fourth electric telescopic component (49). The first electric telescopic component (46), the second electric telescopic component (47), the third electric telescopic component (48), and the fourth electric telescopic component (49) have the same structure.

3. The coal mine car lifting and transporting device according to claim 2, wherein: The first electric telescopic assembly (46) includes a motor (461) and a telescopic connecting rod (462). The motor (461) is installed on a mounting bracket provided in the middle of the first inclined beam (422). The output end of the motor (461) is in transmission cooperation with one end of the telescopic connecting rod (462). The telescopic end of the telescopic connecting rod (462) is movably connected to one side of the front end of the first baffle (44).

4. A coal mine car lifting and transporting device according to any one of claims 1-3, characterized in that: Grooves adapted to the top of the cross beam (1) are provided at the bottoms of the first top beam (421) and the second top beam (431). A first spring shock absorber base (11) and a second spring shock absorber base (12) are installed at the bottom of the cross beam (1). The first spring shock absorber base (11) is connected to the bottom of the first top beam (421) through two spring shock absorbers (13). The second spring shock absorber base (12) is connected to the bottom of the second top beam (431) through two spring shock absorbers (13).

5. A coal mine car hoisting and transportation device according to any one of claims 1-3, characterized in that: The lifting and transporting device further includes a first cantilever (7) and a second cantilever (8). One end of the first cantilever (7) is fixedly connected to the front end of the first longitudinal beam (2). The other end of the first cantilever (7) is movably connected to one end of the first screw elevator (5). The other end of the first screw elevator (5) is movably connected to a first bracket (424) provided in the middle of the first inclined beam (422). One end of the second cantilever (8) is fixedly connected to the front end of the second longitudinal beam (3). The other end of the second cantilever (8) is movably connected to one end of the second screw elevator (6). The other end of the second screw elevator (6) is movably connected to a second bracket (434) provided in the middle of the third inclined beam (432).

6. A coal mine car lifting and transporting device according to any one of claims 1-3, characterized in that: The lifting and transporting device further includes a first pin shaft (9) and a second pin shaft (10). First mounting holes (14) and second mounting holes (15) are axially provided at the two ends of the cross beam (1) respectively. Third mounting holes (21) and fourth mounting holes (32) are axially provided in the middle parts of the first longitudinal beam (2) and the second longitudinal beam (3) respectively. The two ends of the first pin shaft (9) are inserted and matched with the first mounting hole (14) and the third mounting hole (21) respectively. The two ends of the second pin shaft (10) are inserted and matched with the second mounting hole (15) and the fourth mounting hole (32) respectively.

7. A coal mine car hoisting and transporting device according to claim 6, characterized in that: A first bushing (16) is sleeved outside the first pin shaft (9). The end face of the first pin shaft (9) and the end face of the first bushing (16) are axially fixed by bolts. A second bushing (17) is sleeved outside the second pin shaft (10). The end face of the second pin shaft (10) and the end face of the second bushing (17) are axially fixed by bolts.

8. A coal mine car lifting and transporting device according to any one of claims 1-3, characterized in that: A level gauge (18) is installed in the middle of the cross beam (1).

9. The hoisting and transporting device for coal mine mine cars according to claim 3, wherein: A speed reducer (463) is installed on the motor (461).

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