A pneumatic car retarder for coal mine track transportation

Abstract

The utility model relates to the field of mine safety equipment, specifically disclose a kind of coal mine track transport pneumatic car stop, including the bottom plate being arranged below track body, the upper end surface of bottom plate is provided with car stop mechanism, the car stop mechanism includes the support plate and box body being fixedly connected to the upper end surface of bottom plate, two hexagonal shafts are rotatably connected between support plate and box body, the outer wall of two hexagonal shafts is slidably connected with baulk, the inner wall of box body is fixedly connected with two limit rods, the outer wall of two limit rods is slidably connected with two symmetrically distributed slide plates, the upper end surface of two slide plates is fixedly connected with straight rack, the outer wall of two hexagonal shafts is fixedly connected with the rotating shaft extending to the inside of box body, the outer wall of two rotating shafts is respectively fixedly connected with gear meshing connection with two straight racks, by connecting rod gear rack bidirectional synchronous transmission mechanism, the symmetrical linkage and buffer energy absorption of double baulk are realized, effectively improve car stop stability and impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of mining safety equipment technology, and specifically discloses a pneumatic vehicle stopper for coal mine rail transport. Background Technology

[0002] Car stoppers, also known as parking devices, are an important facility in coal mine transportation systems. They are runaway prevention devices, usually installed at the top of a slope. On the one hand, they restrict mine cars to a designated position, and on the other hand, they prevent runaway accidents. They are often used in conjunction with equipment such as pushers, tippers, car climbers, cages, and dispatching winches. They are divided into normally open and normally closed types, which can effectively prevent runaway cars from sliding down and avoid major accidents.

[0003] Existing single-arm or double-arm non-linkage car stoppers often fail to ensure complete synchronization of the two arms' movements. This can result in only one side of the wheels being blocked, causing the mine car to deflect, derail, or even collide with and damage the car stopper due to uneven force, posing a safety hazard. Furthermore, many car stoppers have relatively simple buffer structures, typically only having buffer elements on the arm or base, resulting in limited energy absorption efficiency. The enormous impact force from the mine car is still directly transmitted to the cylinder and transmission mechanism, leading to easy damage and shortened lifespan of the equipment. Therefore, a pneumatic car stopper for coal mine rail transport is needed to solve this problem. Utility Model Content

[0004] This utility model proposes a pneumatic vehicle stopper for coal mine rail transport. Through a bidirectional synchronous transmission mechanism of connecting rod, gear, and rack, it realizes the symmetrical linkage and buffer energy absorption of the two stops, effectively improving the vehicle stopping stability and impact resistance.

[0005] This utility model is implemented as follows: a pneumatic vehicle stopper for coal mine rail transport includes a base plate disposed below the rail body. A vehicle stopper mechanism is disposed on the upper surface of the base plate. The vehicle stopper mechanism includes a support plate and a housing fixedly connected to the upper surface of the base plate. Two symmetrically distributed hexagonal shafts are rotatably connected between the support plate and the housing. A stop block is slidably connected to the outer wall of each of the two hexagonal shafts. Two symmetrically distributed limiting rods are fixedly connected to the inner wall of the housing. Two symmetrically distributed sliding plates are slidably connected to the outer wall of each of the two limiting rods. A rack is fixedly connected to the upper surface of each of the two sliding plates. A rotating shaft extending into the housing is fixedly connected to one end of each of the two hexagonal shafts. A gear that meshes with the two racks is fixedly connected to the outer wall of each of the two rotating shafts.

[0006] The upper and lower end faces of the box are fixedly connected to a connecting shaft. The outer wall of the connecting shaft is rotatably connected to a first connecting rod. Both ends of the first connecting rod are rotatably connected to a second connecting rod. The other ends of the two second connecting rods are respectively hinged to two sliding plates through hinge seats. A cylinder is installed inside the box. The output end of the cylinder is fixedly connected to one of the sliding plates.

[0007] As a preferred embodiment of the pneumatic vehicle stopper for coal mine rail transport according to this utility model, two buffer springs located on both sides of the stop block are sleeved on the outer walls of the two hexagonal shafts.

[0008] As a preferred embodiment of the pneumatic vehicle stopper for coal mine rail transport according to this utility model, the stop block is L-shaped.

[0009] In a preferred embodiment of the pneumatic vehicle stopper for coal mine rail transport according to this utility model, the upper surfaces of the support plate and the box body are both in contact with the lower surface of the rail body.

[0010] As a preferred embodiment of the pneumatic vehicle stopper for coal mine rail transport according to this utility model, the outer wall of the stop block is provided with a wear-resistant layer.

[0011] In a preferred embodiment of the pneumatic vehicle stopper for coal mine rail transport according to this utility model, the cylinder is electrically connected to an external controller.

[0012] The beneficial effects of this utility model are:

[0013] 1. By driving two blocks to move synchronously and in opposite directions through a cylinder, the coordinated action of the vehicle blocking is ensured. It can simultaneously and firmly lock the wheels on both sides of the track, and the force is evenly distributed, which greatly improves the reliability and stability of the vehicle blocking and effectively prevents the vehicle blocking failure caused by uneven force on one side.

[0014] 2. The stop block is slidably connected via a hexagonal shaft and equipped with a buffer spring, combining rotational braking with linear buffering. When the stop block is subjected to the impact of a mine car, it can slide along the hexagonal shaft and compress the spring, converting the enormous impact kinetic energy into the elastic potential energy of the spring, thereby smoothly absorbing and dissipating the energy. This structure can significantly reduce the instantaneous destructive force of impact on core transmission components such as cylinders and gears, protecting the entire device and extending its service life. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is an overall structural diagram of a pneumatic vehicle stopper for coal mine rail transport according to this utility model.

[0017] Figure 2 This is a top sectional view of a pneumatic vehicle stopper for coal mine rail transport according to this utility model.

[0018] Figure 3This is a front sectional view of a pneumatic vehicle stopper for coal mine rail transport according to this utility model.

[0019] Figure 4 This is a structural diagram of the hexagonal shaft of this utility model.

[0020] The markings in the diagram are: 1. Track body; 2. Base plate; 3. Support plate; 4. Box; 5. Hexagonal shaft; 6. Rotating shaft; 7. Stop block; 8. Limiting rod; 9. Slide plate; 10. Spur rack; 11. Gear; 12. Cylinder; 13. Connecting shaft; 14. First connecting rod; 15. Second connecting rod; 16. Buffer spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-4 A pneumatic vehicle stopper for coal mine rail transport includes a base plate 2 disposed below the rail body 1. A vehicle stopper mechanism is disposed on the upper end surface of the base plate 2. The vehicle stopper mechanism includes a support plate 3 and a housing 4 fixedly connected to the upper end surface of the base plate 2. Two symmetrically distributed hexagonal shafts 5 are rotatably connected between the support plate 3 and the housing 4. Blocks 7 are slidably connected to the outer walls of the two hexagonal shafts 5. Two symmetrically distributed limiting rods 8 are fixedly connected to the inner wall of the housing 4. Two symmetrically distributed sliding plates 9 are slidably connected to the outer walls of the two limiting rods 8. A rack 10 is fixedly connected to the upper end surface of the two sliding plates 9. A rotating shaft 6 extending into the interior of the housing 4 is fixedly connected to one end of each of the two hexagonal shafts 5. Gears 11 that mesh with the two racks 10 are fixedly connected to the outer walls of the two rotating shafts 6 respectively.

[0023] The upper and lower end faces of the housing 4 are fixedly connected to the connecting shaft 13. The outer wall of the connecting shaft 13 is rotatably connected to the first connecting rod 14. Both ends of the first connecting rod 14 are rotatably connected to the second connecting rod 15. The other ends of the two second connecting rods 15 are respectively hinged to the two slide plates 9 through hinge seats. The housing 4 is equipped with a cylinder 12. The output end of the cylinder 12 is fixedly connected to one of the slide plates 9.

[0024] In this embodiment: when blocking the mine car, cylinder 12 is activated. Cylinder 12 drives one of the slide plates 9 to slide away from the other slide plate 9 along the limit rod 8. Then, through the first connecting rod 14 and the two second connecting rods 15, the other slide plate 9 moves synchronously in the opposite direction. The synchronous reverse movement of the two slide plates 9 further drives the two racks 10 to move synchronously in the opposite direction, which in turn drives the two gears 11 to move synchronously in the opposite direction. The two gears 11 further drive the two shafts 6 to rotate in the opposite direction, which in turn drives the two hexagonal shafts 5 to rotate synchronously in the opposite direction. The two hexagonal shafts 5 further drive the two stops 7 to rotate synchronously relative to each other, and put them on the track body 1, thereby blocking the wheels of the mine car and stopping the mine car in the specified position to prevent a runaway accident.

[0025] As a technical optimization of this utility model, two buffer springs 16 located on both sides of the stop block 7 are sleeved on the outer walls of the two hexagonal shafts 5.

[0026] In this embodiment: when the stop block 7 blocks the mine car, the impact force causes the stop block 7 to slide along the hexagonal axis 5, and the impact force is buffered by the buffer spring 16 to absorb the impact energy of the mine car and prevent the device from being damaged.

[0027] As a technical optimization of this utility model, the stop block 7 is L-shaped.

[0028] In this embodiment: by setting the stop 7 to an L-shape, it is easy to place it on the track body 1.

[0029] As a technical optimization of this utility model, the upper surfaces of the support plate 3 and the box body 4 are both in contact with the lower surface of the track body 1.

[0030] In this embodiment, by having the upper surfaces of the support plate 3 and the box 4 both abut against the lower surface of the track body 1, it is convenient to support the track body 1.

[0031] As a technical optimization of this utility model, the outer wall of the block 7 is provided with a wear-resistant layer.

[0032] In this embodiment, a wear-resistant layer is provided on the outer wall of the stop 7 to increase the service life of the stop 7.

[0033] As a technical optimization of this utility model, the cylinder 12 is electrically connected to an external controller.

[0034] In this embodiment, the controller facilitates the normal operation of cylinder 12.

[0035] The working principle and usage process of this utility model are as follows: When blocking a mine car, cylinder 12 is activated. Cylinder 12 drives one of the slide plates 9 to slide away from the other slide plate 9 along the limit rod 8. Then, through the first connecting rod 14 and the two second connecting rods 15, the other slide plate 9 moves synchronously in the opposite direction. The synchronous reverse movement of the two slide plates 9 further drives the two spur racks 10 to move synchronously in the opposite direction, which in turn drives the two gears 11 to move synchronously in the opposite direction. The two gears 11 further drive the two rotating shafts 6 to rotate in the opposite direction, which in turn drives the two hexagonal shafts 5 to rotate synchronously in the opposite direction. The two hexagonal shafts 5 further drive the two stop blocks 7 to rotate synchronously relative to each other, and place them on the track body 1, thereby blocking the wheels of the mine car and stopping the mine car in the specified position to prevent runaway accidents. When the stop block 7 blocks the mine car, the impact force causes the stop block 7 to slide along the hexagonal shaft 5. The impact force is buffered by the buffer spring 16, absorbing the impact energy of the mine car and preventing damage to the device.

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A pneumatic car stop for coal mine rail transport, comprising a base plate (2) disposed below the rail body (1), characterized in that: The upper surface of the base plate (2) is provided with a vehicle blocking mechanism. The vehicle blocking mechanism includes a support plate (3) and a box (4) fixedly connected to the upper surface of the base plate (2). Two symmetrically distributed hexagonal shafts (5) are rotatably connected between the support plate (3) and the box (4). The outer walls of the two hexagonal shafts (5) are slidably connected with blocks (7). The inner wall of the box (4) is fixedly connected with two symmetrically distributed limiting rods (8). The outer walls of the two limiting rods (8) are slidably connected with two symmetrically distributed sliding plates (9). The upper surface of the two sliding plates (9) is fixedly connected with a rack (10). One end of the two hexagonal shafts (5) is fixedly connected with a rotating shaft (6) extending into the inside of the box (4). The outer walls of the two rotating shafts (6) are respectively fixedly connected with gears (11) that mesh with the two racks (10). The upper and lower end faces of the box (4) are fixedly connected to a connecting shaft (13). The outer wall of the connecting shaft (13) is rotatably connected to a first connecting rod (14). Both ends of the first connecting rod (14) are rotatably connected to a second connecting rod (15). The other ends of the two second connecting rods (15) are respectively hinged to two slide plates (9) through hinge seats. A cylinder (12) is installed inside the box (4). The output end of the cylinder (12) is fixedly connected to one of the slide plates (9).

2. The pneumatic car stopper for coal mine rail transport according to claim 1, characterized in that: Two buffer springs (16) are fitted on the outer walls of the two hexagonal shafts (5) on both sides of the stop block (7).

3. The pneumatic car stopper for coal mine rail transport according to claim 1, characterized in that: The stop block (7) is L-shaped.

4. The pneumatic car stopper for coal mine rail transport according to claim 1, characterized in that: The upper surfaces of the support plate (3) and the box (4) are both in contact with the lower surface of the track body (1).

5. A pneumatic car stopper for coal mine rail transport according to claim 1, characterized in that: The outer wall of the stop (7) is provided with a wear-resistant layer.

6. A pneumatic car stopper for coal mine rail transport according to claim 1, characterized in that: The cylinder (12) is electrically connected to an external controller.

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