A sliding rail type heavy-duty mining car drive structure

Abstract

This application provides a sliding rail type heavy-duty mine car drive structure, relating to the field of mine car drive technology. It includes a drive traction component and a connecting seat. One side of the connecting seat is bolted to a mine car frame. Guide rails are provided at the bottom of both sides of the mine car frame. The drive traction component includes a limiting arm, which is hooked between two guide rails by two gears. Gears are provided on the inner sides of both ends of the limiting arm, and fastening bolts are installed inside the gears. Receiving slots are machined on the inner sides of both ends of the limiting arm, and support seats are installed inside the receiving slots. Shafts are pin-connected to the inner sides of both ends of the limiting arm. The key technical point is that by hooking the limiting arm on the drive traction component between two guide rails by two gears, and connecting the mine car frame and the drive traction component using the connecting seat, when the mine car frame moves onto the two vertically inclined guide rails, and the weight of the mine car is not fully applied to the two guide rails, tipping over when the mine car moves onto a sloping surface can be prevented.

Description

Technical Field

[0001] This invention relates to the field of mining car drive technology, specifically a sliding rail type heavy-duty mining car drive structure. Background Technology

[0002] Mining cars are narrow-gauge railway vehicles used in mines to transport bulk materials such as coal, ore, and waste rock. To adapt to the confined conditions of underground tunnels, they are compact in size and generally require locomotives or winches for traction. Mining cars are classified into five main categories based on their structure and unloading method: stationary mining cars, tipper mining cars, single-sided curved-rail side-discharge mining cars, bottom-discharge mining cars, and shuttle mining cars.

[0003] The basic structural components of a mining car generally include the car body, frame, wheelsets, and connectors. The car body is a box-shaped container for loading materials on the mining car. The frame includes beams, buffers, and axle clamps. The wheelsets are the running parts of the mining car, and there are two types: open and closed. The connectors consist of a traction chain, pins, and pin seats. They connect the mining cars into a car group and transmit traction force. There are three types: single-ring, three-ring, and universal chain.

[0004] The patent document with publication number CN105599782B describes a rubber-tired track mine car traction device with offset compensation function. The device is connected to the track mine car through a connecting ear. The rotating shaft is connected to the rotating frame to form a cylindrical sleeve pair, so the traction component can rotate relative to the rotating frame to adapt to the working conditions of the traction car tilting left and right, thereby solving the impact force of the track mine car on the traction rubber-tired car during the starting and braking process. The slide rail is installed on the main frame of the rubber-tired tractor. The front and rear plates are made of thick steel plates with reinforcing ribs, providing both high load-bearing capacity and preventing welding deformation. Baffles are located at both ends of the slide rail for installing cover plates. The track trolley can only slide in from the left side of the guide rail. The cover plates act as a limit, preventing the track trolley from detaching from the slide rail during travel. The track trolley can roll freely along the track groove via guide wheels, ensuring that the mine car does not derail when the rubber-tired tractor swings left and right, and can still travel along the track, compensating for lateral (i.e., the width direction of the mine car track) sway.

[0005] However, in the process of implementing the above technical solution, the following technical problems were found: Although the traction component of the existing rubber-tired track mine car traction device with offset compensation function can rotate relative to the rotating frame to adapt to the working conditions of the traction car tilting left and right, during the traction process, when the mine car moves to a steep slope, the track supporting the movement of the mine car is tilted, and the weight of the mine car does not directly act on the track. The probability of the mine car overturning is still relatively high, which is not conducive to improving the safety factor. Summary of the Invention

[0006] To overcome the shortcomings of existing rubber-tired track mine car traction devices with offset compensation, which are prone to tipping over when the mine car moves to a steep slope due to the tilting of the track supporting the mine car, resulting in the mine car's weight not directly acting on the track, and thus failing to improve the safety factor, this application provides a sliding rail type heavy mine car drive structure. By having the gears at both ends of the upper limit arm of the drive traction component mesh with the rack on the inner wall of the top of the guide rail and maintaining a certain gap, the limit arm is connected between the two guide rails through the two gears. When the mine car frame moves to the two vertically tilted guide rails, before the mine car's weight is fully acting on the two guide rails, the connection between the drive traction component and the guide rail is maintained, preventing the mine car from tipping over when moving to a sloping road surface.

[0007] The technical solution adopted by the embodiments of this application to solve its technical problem is: A sliding rail type heavy-duty mining car drive structure includes a drive traction component and a connecting seat, with one side of the drive traction component connected to the tractor vehicle; The connecting seat is located on one side of the top of the drive traction component; The connecting seat is bolted to one side of a mine car frame. Guide rails are provided at the bottom of both sides of the mine car frame. The driving traction component includes a limiting arm. Gears are provided on the inner sides of both ends of the limiting arm. The limiting arm is hooked between the two guide rails by two gears.

[0008] In one possible implementation, the inner sides of both ends of the limiting arm are machined with storage slots, and a support seat is provided inside the storage slot. Both ends of the limiting arm are connected to shafts by pins, and the two shafts pass through the interior of the two storage slots respectively, so that one end of the support seat rotates around the shaft outside the shaft.

[0009] In one possible implementation, both ends of the gear are fitted with first bearings with an interference fit, and the gear is provided with a fastening bolt. The fastening bolt is fitted with the inner side of the two first bearings on the gear with an interference fit, and one end of the fastening bolt is threadedly connected to one end of the support seat.

[0010] In one possible implementation, the threads of the two fastening bolts are turned in opposite directions, and the direction in which the drive traction member pulls the mine car frame via the connecting seat is the same as the direction in which the fastening bolt threads are tightened.

[0011] In one possible implementation, both guide rails have C-shaped cross-sections with the C-shaped openings facing opposite directions. A rack is machined on the top inner wall of each guide rail, and the gear is meshed with the rack. The gear is rotatably connected to the outside of the fastening bolt and slides at the bottom of the rack.

[0012] In one possible implementation, a traction ring is machined on one side of the limiting arm, a connecting rod is hinged to the center of the limiting arm, a limiting strip is machined at one end of the connecting rod, a second bearing is interference-fitted to the outside of the connecting rod, the connecting seat is movably connected to the outside of the limiting strip, and the second bearing is interference-fitted to the inside of the connecting seat.

[0013] In one possible implementation, guide rods are pin-connected to the interior of both ends of the connecting seat. The guide rods are arc-shaped and two guide rods are symmetrically arranged on both sides of the second bearing. The guide rods and the second bearing are concentric. The connecting seat drives the two guide rods to slide and connect to the interior of both ends of the limiting strip.

[0014] In one possible implementation, springs are sleeved to the outside of both ends of the two guide rods, and the springs are supported between the inner wall of the connecting seat and the surface of the limiting strip.

[0015] In one possible implementation, the connection point between the connecting seat and one side of the mine car frame is provided with an opening, the height of which is greater than the thickness of the limiting strip, and the connecting rod extends from the inside of the connecting seat to the outside.

[0016] The beneficial effects of this application are as follows: First, in this solution, by making the gears at both ends of the upper limit arm of the drive traction component mesh with the rack on the inner wall of the top of the guide rail and maintaining a certain gap, the limit arm is hooked between the two guide rails by the two gears. When the mine car frame moves to the two vertically inclined guide rails, before the weight of the mine car is fully applied to the two guide rails, the connection between the drive traction component and the guide rail is maintained, thus preventing the mine car from tipping over when it moves to the sloping road surface. Secondly, in this solution, by having two shafts pinned inside the two ends of the limit arm pass through the interior of two support seats respectively, and by using fastening bolts to pass through the inside of the gear and threadedly connect to one end of the support seat, during the process of driving the traction component to move the mine car frame, it is ensured that when the mine car frame moves to the curved guide rail or the bend formed by the combination of multiple guide rails, one end of the support seat rotates around the shaft outside, thereby automatically adapting to the working environment. Thirdly, in this solution, a connecting rod with a limit strip is hinged to one side of the limit arm, and guide rods are pinned to both ends of the connecting seat to provide support for the connecting seat to rotate outside the limit strip. When the mine car wheel is connected to two uneven guide rails and tilts to the left or right, the rotating connecting seat can compress the spring between the surface of the limit strip and its inner wall. With the support of the compressed spring, the tilt can be resisted, and the mine car can be prevented from tipping over when it tilts to the left or right. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of a sliding rail type heavy-duty mining car drive structure according to the present invention; Figure 2 This is a schematic diagram of the connection structure between the drive traction component and the slide rail in the slide rail type heavy mine car drive structure of the present invention. Figure 3 This is a schematic diagram of the drive traction component of a sliding rail type heavy-duty mining car drive structure according to the present invention; Figure 4 This is a schematic diagram of the drive structure of a sliding rail heavy-duty mining car of the present invention in the state where the gear and the limiting arm are disengaged. Figure 5 This is a cross-sectional view of a sliding rail type heavy-duty mining car drive structure connecting seat according to the present invention.

[0018] Figure descriptions: 1. Guide rail; 2. Mine car frame; 3. Connecting seat; 4. Drive traction component; 401. Limiting arm; 402. Traction ring; 403. Support seat; 404. Shaft; 405. Receiving slot; 406. Gear; 407. Fastening bolt; 408. First bearing; 409. Connecting rod; 410. Guide rod; 411. Limiting strip; 412. Second bearing; 413. Spring; 5. Rack. Detailed Implementation

[0019] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows: Example 1: This embodiment describes the specific structure of a sliding rail type heavy-duty mine car drive structure, see details below. Figures 1-3 As shown, it includes a driving traction component 4 connected to the tractor on one side and a connecting seat 3 set on the top side of the driving traction component 4. The connecting seat 3 is bolted to a mine car frame 2. Guide rails 1 are provided at the bottom of both sides of the mine car frame 2. The driving traction component 4 includes a limiting arm 401. Gears 406 are provided on the inner sides of both ends of the limiting arm 401. A traction ring 402 is machined on one side of the limiting arm 401. like Figures 2 to 4 As shown, the inner sides of both ends of the limiting arm 401 are machined with storage slots 405, and the inside of the storage slots 405 is provided with support seats 403. The inside of both ends of the limiting arm 401 is connected to shafts 404 by pins. Both guide rails 1 have C-shaped cross sections, with the C-shaped openings of the two guide rails 1 facing opposite directions. After connecting the support base 403 with the limiting arm 401 and the gear 406, the limiting arm 401 can be hooked between the two guide rails 1 by the two gears 406. When the tractor pulls the driving traction component 4 through the traction ring 402, it can pull the mine car frame 2 to travel on the top of the two guide rails 1. When the mine car frame 2 moves to the two vertically inclined guide rails 1, the two gears 406 are used to prevent the driving traction component 4 from disengaging from the guide rails 1, reducing the risk of the mine car frame 2 disengaging from the guide rails 1. Meanwhile, the two shafts 404 pass through the interior of the two storage slots 405 respectively. When the mine car frame 2 moves to the arc-shaped guide rail 1, or the bend formed by the combination of multiple guide rails 1, one end of the support base 403 rotates around the shaft 404 outside, which can automatically adapt to the working environment. Secondly, in order to reduce the resistance when gear 406 rotates around fastening bolt 407, such as Figure 4 As shown, both ends of the gear 406 are internally fitted with first bearings 408, and the gear 406 is internally fitted with fastening bolts 407. By making the fastening bolts 407 interference fit inside the two first bearings 408 on the gear 406, and after connecting one end of the fastening bolts 407 to one end of the support base 403 by thread, the fastening bolts 407 can provide support for the movement of the gear 406. Meanwhile, in order to prevent the fastening bolt 407 from loosening when the gear 406 rotates, the two fastening bolts 407 are set with opposite thread directions. The direction of the drive traction component 4 pulling the mine car frame 2 through the connecting seat 3 is the same as the direction of the fastening bolt 407 thread tightening. During the process of the drive traction component 4 driving the mine car frame 2, the fastening bolt 407 can always be kept in a tightened state. Furthermore, a rack 5 is machined on the top inner wall of the guide rail 1. By meshing the gear 406 with the rack 5, the gear 406 is rotatably connected to the outside of the fastening bolt 407 and slides at the bottom of the rack 5. This ensures that when the limit arm 401 is in an inclined state, all the teeth around the gear 406 are partially connected to the rack 5. Meanwhile, the rack 5 is machined to the top inner wall of the guide rail 1, so that when the guide rail 1 supports the mine car frame 2 working in the mining area, the ore can be prevented from filling the gaps in the rack 5.

[0020] By adopting the above technical solution: The above design sets the guide rail 1 in a C-shape. When the mine car frame 2 is mounted between the two guide rails 1, the connecting seat 3 connects the drive traction component 4, so that the gears 406 at both ends of the upper limit arm 401 of the drive traction component 4 mesh with the rack 5 on the inner wall of the top of the guide rail 1 and maintain a certain gap. When the mine car frame 2 moves to the two vertically inclined guide rails 1, the pull of the two gears 406 can maintain the connection between the drive traction component 4 and the guide rail 1 when the weight of the mine car is not fully applied to the two guide rails 1, reducing the risk of the mine car frame 2 disengaging from the guide rail 1 and preventing the mine car from tipping over when it moves to the sloping road surface. Meanwhile, by having the two shafts 404 pinned to the inside of the two ends of the limiting arm 401 pass through the inside of the two support seats 403 respectively, the support seats 403 can rotate around the shafts 404 inside the receiving slot 405. After the fastening bolts 407 pass through the inside of the gear 406 and are threaded to one end of the support seat 403, the fastening bolts 407 are always kept in a tightened state due to the opposite direction of the threads of the two fastening bolts 407. This ensures that when the driving traction component 4 moves the mine car frame 2, the fastening bolts 407 can automatically adapt to the working environment.

[0021] Example 2: Based on Example 1, this example describes the specific structure of the drive traction component 4. A connecting rod 409 is hinged at the center of the limiting arm 401. A limiting strip 411 is machined at one end of the connecting rod 409. A second bearing 412 is interference-fitted to the outside of the connecting rod 409. In this configuration, the connecting seat 3 is movably connected to the outside of the limiting bar 411, and the second bearing 412 is interference-fitted to the inside of the connecting seat 3. When the two guide rails 1 are laid on the ground and there is a difference in height, the limiting arm 401 is affected by the connection between the gear 406 and the rack 5 and the connection between the mine car wheel and the two guide rails 1. The connecting seat 3 rotates around the connecting rod 409 on one side of the driving traction member 4. With the help of the second bearing 412, the movement resistance can be reduced. Secondly, in order to guide the connecting seat 3 to move stably on the outside of the limiting strip 411, such as Figure 5 As shown, guide rods 410 are pin-connected to both ends of the connecting seat 3. By setting the guide rods 410 in an arc shape, the two guide rods 410 are symmetrically arranged on both sides of the second bearing 412, and the guide rods 410 and the second bearing 412 are concentrically arranged. This ensures that the connecting seat 3 can rotate around the connecting rod 409 on the outside of the limiting strip 411, while the connecting seat 3 drives the two guide rods 410 to slide and connect to the inside of both ends of the limiting strip 411.

[0022] Furthermore, in order to resist the influence of the different heights of the two guide rails 1 on the mine car, such as Figure 5The two guide rods 410 shown are both externally connected to springs 413. The springs 413 are supported between the inner wall of the connecting seat 3 and the surface of the limiting strip 411, and can provide resistance to the connecting rod 409 rotating around the limiting strip 411. Furthermore, to facilitate the installation of the limiting strip 411 onto the inner side of the connecting seat 3 without affecting the connection between the connecting seat 3 and one side of the mine car frame 2, such as... Figure 5 As shown, the connection between the connecting seat 3 and the mine car frame 2 is provided with an opening. By making the height of the opening greater than the thickness of the limiting strip 411, the limiting strip 411 can be supported to be installed on the inner side of the connecting seat 3, so that the connecting rod 409 can pass out from the inner side of the connecting seat 3 to the outer side and complete the hinged connection with the limiting arm 401.

[0023] By adopting the above technical solution: The above design uses a connecting rod 409 with a limiting strip 411 hinged to one side of the limiting arm 401, and guide rods 410 pinned to both ends of the connecting seat 3 to provide support for the connecting seat 3 to rotate outside the limiting strip 411. When the mine car wheel is connected to the two uneven guide rails 1 and tilts to the left or right, the mine car frame 2 at the bottom of the mine car drives the connecting seat 3 to tilt and rotate. The limiting arm 401 is affected by the connection between the gear 406 and the rack 5, so that the limiting strip 411 at one end of the connecting rod 409 remains stationary. This allows the connecting seat 3 to drive the two guide rods 410 to slide inside the limiting strip 411, thereby compressing the spring 413. With the support of the compressed spring 413, the tilting situation can be resisted, and the mine car can be prevented from tipping over when tilting to the left or right.

[0024] Specifically, when using this sliding rail type heavy-duty mine car drive structure for mine car traction work; First, the limiting strip 411 needs to be installed on the inside of the connecting seat 3 so that 9 passes through the inside of the connecting seat 3 and is hinged to the limiting arm 401. Guide rods 410 with two springs 413 are pinned to both ends of the connecting seat 3 so that the springs 413 are supported between the surface of the limiting strip 411 and the inner wall of the connecting seat 3. Next, connect the two gears 406 at the bottom of the limiting arm 401 between the two guide rails 1, so that the two gears 406 respectively mesh with the racks 5 on the inner wall of the top of the two guide rails 1, and leave a certain clearance for movement. Next, one side of the connecting seat 3 is assembled and fixed to one side of the mine car frame 2 with bolts, so that the traction ring 402 is connected to the traction vehicle; When the mine car frame 2 moves onto the two guide rails 1 that are vertically inclined due to the slope, the pull of the two gears 406 can maintain the connection between the drive traction component 4 and the guide rails 1 when the weight of the mine car is not fully applied to the two guide rails 1, thus reducing the risk of the mine car frame 2 disengaging from the guide rails 1. When the mine car wheels are connected to the two uneven guide rails 1 and tilt to the left or right, the mine car frame 2 at the bottom of the mine car drives the connecting seat 3 to tilt and rotate. The limiting arm 401 is affected by the connection between the gear 406 and the rack 5, so that the limiting strip 411 at one end of the connecting rod 409 remains stationary. This allows the connecting seat 3 to drive the two guide rods 410 to slide inside the limiting strip 411, thereby compressing the spring 413. With the support of the compressed spring 413, the tilting situation can be resisted, and the mine car can be prevented from tipping over when it tilts to the left or right. When the mine car frame 2 moves to the bend formed by the arc-shaped guide rail 1 or the combination of multiple guide rails 1, the two shafts 404 pinned to the inside of the two ends of the limiting arm 401 pass through the inside of the two support seats 403 respectively, so that the support seats 403 can rotate around the shafts 404 inside the receiving slot 405, which makes it easy for the limiting arm 401 to tilt between the two guide rails 1. At this time, the gear 406 can slide left and right at the bottom of the rack 5 without affecting the rotation of the gear 406, so that the drive traction component 4 can automatically adapt to the two guide rails 1 in different states.

[0025] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A sliding rail type heavy-duty mining car drive structure, characterized in that, include: Drive the traction component (4), one side of which is connected to the tractor vehicle; Connecting seat (3), which is located on one side of the top of the driving traction member (4); The connecting seat (3) is bolted to one side of a mine car frame (2). Guide rails (1) are provided at the bottom of both sides of the mine car frame (2). The driving traction component (4) includes a limiting arm (401). Gears (406) are provided on the inner sides of both ends of the limiting arm (401). The limiting arm (401) is hooked between the two guide rails (1) by two gears (406). Storage slots (405) are machined on the inner sides of both ends of the limiting arm (401). A support seat (403) is provided inside the storage slot (405). A shaft (404) is pin-connected to the inner sides of both ends of the limiting arm (401). The two shafts (404) pass through the inner sides of the two storage slots (405) respectively, so that one end of the support seat (403) rotates around the shaft (404) outside the shaft (404). The gear (406) is provided with a fastening bolt (407) inside. One end of the fastening bolt (407) is threadedly connected to one end of the support seat (403). The threads of the two fastening bolts (407) are turned in opposite directions. The direction in which the driving traction member (4) pulls the mine car frame (2) through the connecting seat (3) is the same as the direction in which the threads of the fastening bolts (407) are tightened. Both guide rails (1) have C-shaped cross sections, and the C-shaped openings of the two guide rails (1) face opposite directions. The top inner wall of the guide rail (1) is machined with a rack (5). The gear (406) is meshed with the rack (5), and the gear (406) is rotatably connected to the outside of the fastening bolt (407) and slides at the bottom of the rack (5). A traction ring (402) is machined on one side of the limiting arm (401), and a connecting rod (409) is hinged at the center of the limiting arm (401). A limiting strip (411) is machined at one end of the connecting rod (409), and the connecting seat (3) is movably connected to the outside of the limiting strip (411). The connecting seat (3) has guide rods (410) pin-connected to both ends. The guide rods (410) are arc-shaped and the two guide rods (410) are symmetrically arranged on both sides of the second bearing (412). The guide rods (410) and the second bearing (412) are concentrically arranged. The connecting seat (3) drives the two guide rods (410) to slide and connect to the inside of both ends of the limiting strip (411). Both ends of the two guide rods (410) are externally connected to springs (413), which are supported between the inner wall of the connecting seat (3) and the surface of the limiting strip (411).

2. The sliding rail type heavy-duty mining car drive structure as described in claim 1, characterized in that: The gear (406) has a first bearing (408) with an interference fit at both ends, and the fastening bolt (407) is interference fitted inside the two first bearings (408) on the gear (406).

3. The sliding rail type heavy-duty mining car drive structure as described in claim 1, characterized in that: The connecting rod (409) is externally interference-fitted with a second bearing (412), which is interference-fitted into the interior of the connecting seat (3).

4. The sliding rail type heavy-duty mining car drive structure as described in claim 1, characterized in that: The connection point between the connecting seat (3) and the mine car frame (2) is provided with an opening, the height of which is greater than the thickness of the limiting strip (411), and the connecting rod (409) extends from the inside of the connecting seat (3) to the outside.

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