An energy-saving short-distance shuttle rail transport device

Abstract

This invention discloses a labor-saving short-distance reciprocating rail transport device, comprising a rail trolley and a rail set between two fixed workstations. The rail has upturned ends with baffles. The rail trolley is placed on the rail and equipped with a brake. Two elastic telescopic brake rods are provided on the rail trolley. Each elastic telescopic brake rod slides through a guide hole in a guide plate fixedly connected to the rail trolley frame. One end of each elastic telescopic brake rod is connected to the brake, and the other end is opposite to the baffles at both ends of the rail. This invention uses an upturned rail and a collision braking device on the rail trolley. When the rail trolley moves to both ends of the rail, it first converts some kinetic energy into potential energy, then brakes the rail trolley. Upon starting, it converts potential energy back into kinetic energy. This not only effectively prevents damage to the wheels and baffles due to violent collisions but also reduces labor intensity for workers.

Description

Technical Field

[0001] This invention relates to a short-distance round-trip rail trolley, which can effectively save manpower and belongs to the field of transportation equipment technology. Background Technology

[0002] Some manual railcarts operate only between two fixed workstations, such as sampling trolleys located at the exit of a steel mill's cold rolling mill production line. These trolleys are used to collect fallen samples after flying shearing and for short-distance transport. Currently, these types of railcarts generally suffer from the following problems:

[0003] 1) A track-mounted trolley needs to overcome static friction to start from a standstill, and the static friction is directly proportional to the weight the trolley carries. Therefore, when the load is heavy, it is more difficult to start the trolley.

[0004] 2) When the rail trolley goes from running to stopping, a certain reverse thrust needs to be applied; otherwise, its wheels will collide violently with the rail baffles, causing significant damage to the wheels and rail baffles.

[0005] 3) Most railcarts cannot brake midway. If it is necessary to stop midway, a large reverse force needs to be applied manually, which causes great inconvenience to stopping midway.

[0006] In conclusion, the existing short-distance round-trip track trolley operation is relatively laborious and needs to be improved. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a labor-saving short-distance reciprocating rail transport device to prevent damage to wheels and baffles due to violent collisions and to reduce the labor intensity of workers.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A labor-saving short-distance round-trip rail transport device includes a rail trolley and a rail set between two fixed workstations. The two ends of the rail are upturned and equipped with baffles. The rail trolley is placed on the rail and equipped with a holding brake. The rail trolley is equipped with two elastic telescopic brake rods. Each elastic telescopic brake rod slides through a guide hole in a guide plate that is fixedly connected to the frame of the rail trolley. One end of the two elastic telescopic brake rods is connected to the holding brake, and the other end is opposite to the baffles at both ends of the rail.

[0010] The above-mentioned labor-saving short-distance round-trip rail transport device includes a striker, a longitudinal connecting rod, and a spring buffer in each elastic telescopic brake rod. The striker slides through a guide hole in a guide plate that is fixedly connected to the frame of the rail trolley. The head end of the striker is opposite to the baffle at the end of the rail. The head end of the longitudinal connecting rod is connected to the tail end of the striker through the spring buffer. The tail end of the longitudinal connecting rod is connected to the holding brake.

[0011] The above-mentioned labor-saving short-distance round-trip rail transport device has two brakes, which are respectively connected to the front and rear wheels of the rail trolley. The two brakes are respectively connected to the tail ends of the longitudinal connecting rods of the two elastic telescopic brake rods. A linkage mechanism is provided between the longitudinal connecting rods of the two elastic telescopic brake rods. The linkage mechanism includes two control rods, which are connected to the two longitudinal connecting rods to form a parallelogram four-bar linkage. Each control rod is rotatably connected to the frame of the rail trolley through a rotating shaft set between the two longitudinal connecting rods.

[0012] The above-mentioned labor-saving short-distance round-trip rail transport device has an operating handle at one end of the control rod and a corresponding control rod limit bolt fixed on the frame at the other end.

[0013] The aforementioned labor-saving short-distance round-trip rail transport device has a striker position adjustment bolt at the head end of the striker.

[0014] The above-described labor-saving short-distance round-trip rail transport device includes a spring, a connecting seat, an inner sleeve, an outer sleeve, a locking nut, a limiting nut, and two spring buffer connecting bolts. The inner sleeve is slidably fitted inside the outer sleeve, with one end of the inner sleeve fixedly connected to the connecting seat and one end of the outer sleeve connected to the tail end of the impact rod. The spring is loosely fitted in the inner sleeve, with both ends of the spring pressing against the sealing plates at the ends of the inner and outer sleeves, respectively. The connecting seat is rotatably connected to the corresponding control rod and longitudinal connecting rod. One end of each of the two spring buffer connecting bolts is fixedly connected to the outer sleeve and the impact rod through a locking nut, while the other end slides through the through holes on both sides of the connecting seat and is screwed into the limiting nut.

[0015] The above-described labor-saving short-distance round-trip rail transport device has a hopper installed on the frame of the rail trolley.

[0016] This invention employs a track with both ends curved upwards and incorporates a collision braking device on the track trolley. When the trolley moves to either end of the track, some of its kinetic energy is converted into potential energy, which then brakes the decelerated trolley. Upon restarting, the potential energy is converted back into kinetic energy. This not only effectively prevents damage to the wheels and baffles due to violent collisions but also reduces labor intensity for workers. Furthermore, this device boasts advantages such as simple structure, convenient operation, and reliable performance. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the railcart;

[0019] Figure 2 This is a structural schematic diagram of the wheel assembly;

[0020] Figure 3 This is a structural diagram of the chassis assembly;

[0021] Figure 4 This is a structural schematic diagram of the connecting rod assembly;

[0022] Figure 5 This is a schematic diagram of the holding brake assembly;

[0023] Figure 6 This is a side view of the railcart;

[0024] Figure 7 This is a front view of the tracked trolley;

[0025] Figure 8 This is a top view of the railcart;

[0026] Figure 9 This is a schematic diagram of the installation of the track trolley on the track;

[0027] Figure 10 This is a schematic diagram of the spring buffer structure;

[0028] Figure 11 This is a cross-sectional view of a spring buffer.

[0029] The markings in the diagram are as follows: 1. Wheel, 2. Axle, 3. Brake wheel, 4. Bearing, 5. Frame, 6. Axle seat, 7. Brake seat, 8. Linkage mounting shaft, 9. Control rod limit bolt, 10. Guide plate, 11. Control rod, 12. Impact rod, 13. Longitudinal link, 14. Push-pull rod, 15. Upper support rod, 16. Lower support rod, 17. Impact rod position adjustment bolt, 18. Brake, 19. Brake shoe, 20. Rail, 21. Baffle, 22. Spring buffer, 23. Spring buffer fixing bolt, 24. Spring buffer connecting bolt, 25. Spring, 26. Connecting seat, 27. Inner sleeve, 28. Outer sleeve, 29. Locking nut, 30. Limit nut. Detailed Implementation

[0030] This invention addresses the problems existing in the prior art by providing a labor-saving short-distance reciprocating rail transport device. This device is labor-saving to operate and can achieve mid-journey braking, which facilitates the short-distance transport of materials.

[0031] Reference Figures 1-11 The present invention discloses a labor-saving short-distance reciprocating rail transport device, which mainly includes a rail trolley, a rail 20, and baffles 21. The rail trolley includes a wheel assembly, a chassis assembly, a connecting rod assembly, and a brake assembly. The rail trolley is placed on the rail 20 and runs on it. The two ends of the rail 20 are appropriately raised, and baffles 21 are set at both ends of the rail 20.

[0032] The wheel assembly supports the entire vehicle body and includes wheels 1, axle 2, brake wheel 3, and bearing 4. Wheels 1 roll on rails 20, axle 2 fixes the two wheels 1 and brake wheel 3 into a whole, and bearing 4 connects the frame 5 and wheels 1.

[0033] The chassis assembly includes a frame 5, axle seats 6, brake seats 7, connecting rod mounting shafts 8, control rod limit bolts 9, and guide plates 10. The frame 5 is used to mount and secure various components, and a hopper for holding materials is mounted on it. Axle seats 6 mount bearings 4, brake seats 7 mount brake 18, connecting rod mounting shafts 8 mount the connecting rod assembly, control rod limit bolts 9 adjust the locking position of the control rod 11, and guide plates 10 limit the position of the impact rod 12.

[0034] The linkage assembly includes a control lever 11, a striker 12, a longitudinal connecting rod 13, a push-pull rod 14, an upper support rod 15, a lower support rod 16, and a striker position adjustment bolt 17. The control lever 11 is used to release and lock the brake 18. The striker 12 is used to collide with the baffle 21 at the end of the track. The two control levers 11 and the two longitudinal connecting rods 13 form a parallelogram, causing the brakes 18 on both sides to open and close synchronously. One end of the longitudinal connecting rod 13 is connected to the push-pull rod 14, and the other end is connected to the striker 12 via a spring buffer 22. The push-pull rod 14 is connected to the brake 18 via the upper support rod 15 and the lower support rod 16. The striker 12 has a striker position adjustment bolt 17 at its head, which can adjust the position of the track trolley when the striker 12 strikes the baffle 21. After the impact rod 12 collides with the baffle 21 at the end of the track, locking the brake 18, the control rod 11 compresses the spring 25 inside the spring buffer 22, deforming the parallelogram and thus releasing the brake 18, allowing the trolley to move again. The spring buffer 22 is fixed to the longitudinal connecting rod 13 by the spring buffer fixing bolt 23, and the longitudinal connecting rod 13, spring buffer 22, and impact rod 12 are connected together by two upper and lower spring buffer connecting bolts 24. The spring buffer connecting bolt 24 is a movable structure on the longitudinal connecting rod 13 side, fixing only one side, while it is a fixed structure on the impact rod 12 side, locked with nuts on both sides.

[0035] The brake assembly includes a brake 18 and a brake shoe 19. The brake 18 is used to control the wheel 1 to stop rotating. The brake shoe 19 is matched with the brake wheel 3 and is used to lock the brake wheel 3 to brake the trolley.

[0036] In this embodiment, the holding brake 18 is model YWZ 100 / 25, the bearing 4 is model UCP 207, the track gauge of the two side rails 20 is 600mm, the diameter of the wheel 1 is 300mm, and the axle diameter of the central axle 2 is 40mm.

[0037] The working process of this invention is as follows (taking the sampling trolley at the exit section of the production line in the cold rolling workshop of a steel plant as an example):

[0038] ① The rail trolley is placed below the flying shear sampling position at the production line exit. The brake 18 is in the braking state, and the spring 25 is slightly compressed. After the flying shear cuts the sample, the sample falls into the hopper above the trolley.

[0039] ②Operate control lever 11 to continue compressing the spring 25 inside spring buffer 22, causing the parallelogram formed by control lever 11 and longitudinal connecting rod 13 to deform, releasing the brake 18 (both brake 18s open simultaneously), and the brake shoe 19 releases the brake wheel 3, allowing the trolley to start. At this time, part of the trolley's potential energy is converted into kinetic energy, and the trolley is manually pushed along track 20 to move out of the production line;

[0040] ③ When the railcart moves to the baffle 21 at the other end of the rail 20, the kinetic energy of the railcart is gradually converted into potential energy, and the speed of the railcart slows down until the impact rod 12 collides with the baffle 21 at the end of the rail, causing the parallelogram formed by the control rod 11 and the longitudinal connecting rod 13 to deform. This causes the push-pull rod 14 to push the angle between the upper support rod 15 and the lower support rod 16 to decrease, and the brakes 18 on both sides close simultaneously. The brake shoes 19 lock the brake wheels 3, thus braking the railcart (since the speed of the railcart is already very small at this time, the braking distance is also very small, only a few centimeters, which can be ignored). During the braking process, the spring 25 in the spring buffer 22 is slightly compressed.

[0041] ④ Remove the sample from the hopper;

[0042] ⑤ Repeat steps ② and ③ to reset the unloaded railcart.

[0043] ⑥ Proceed to the next sample taking operation.

[0044] This invention appropriately raises both ends of track 20. When the track trolley reaches the end of track 20, some of its kinetic energy is converted into potential energy. The trolley's speed decreases and it brakes, thus preserving the potential energy. When the track trolley needs to move in the opposite direction, the brake is released, and the potential energy is converted into kinetic energy, overcoming static friction to move in the opposite direction. Simultaneously, manual intervention is used to accelerate the trolley's speed. The same process is repeated at the other end, achieving the goal of saving manpower. Collision braking devices are installed at both ends of the trolley body, and collision baffles 21 are installed at the end of track 20 to automatically stop the track trolley when it reaches the end of track 20. Brake release control levers 11 are installed on both sides of the trolley body for manual control of braking or releasing the brakes.

[0045] The beneficial effects of this invention are:

[0046] 1) This invention utilizes the conversion of kinetic and potential energy, saving manpower;

[0047] 2) This invention has a simple structure and is easy to operate;

[0048] 3) A baffle is installed at the end of the track to facilitate safe operation. The trolley is also equipped with a collision brake device, which can automatically brake after a collision.

Claims

1. A labor-saving short-distance round-trip rail transport device, characterized in that, Includes a rail trolley and a rail (20) set between two fixed workstations. The two ends of the rail (20) are upturned and equipped with baffles (21). The rail trolley is placed on the rail (20) and equipped with a brake (18). Two elastic telescopic brake rods are provided on the rail trolley. Each elastic telescopic brake rod slides through the guide hole on the guide plate (10) which is fixedly connected to the frame (5) of the rail trolley. One end of the two elastic telescopic brake rods is connected to the brake (18), and the other end is opposite to the baffles (21) at both ends of the rail (20). Each elastic telescopic brake rod includes a strike rod (12), a longitudinal connecting rod (13), and a spring buffer (22). The strike rod (12) slides through a guide hole on a guide plate (10) that is fixedly connected to the frame (5) of the rail trolley. The head end of the strike rod (12) is opposite to the baffle (21) at the end of the rail (20). The head end of the longitudinal connecting rod (13) is connected to the tail end of the strike rod (12) through the spring buffer (22). The tail end of the longitudinal connecting rod (13) is connected to the holding brake (18). The spring buffer (22) includes a spring (25), a connecting seat (26), an inner sleeve (27), an outer sleeve (28), a locking nut (29), a limiting nut (30), and two spring buffer connecting bolts (24). The inner sleeve (27) is slidably fitted inside the outer sleeve (28). One end of the inner sleeve (27) is fixedly connected to the connecting seat (26), and one end of the outer sleeve (28) is connected to the tail end of the impact rod (12). The spring (25) Loosely fitted in the inner sleeve (27), the two ends of the spring (25) abut against the sealing plates at the ends of the inner sleeve (27) and the outer sleeve (28), respectively. The connecting seat (26) is rotatably connected to the corresponding control rod (11) and longitudinal connecting rod (13). One end of the two spring buffer connecting bolts (24) is fixedly connected to the outer sleeve (28) and the impact rod (12) through the locking nut (29), and the other end slides through the through holes on both sides of the connecting seat (26) and is screwed into the limiting nut (30). Two brakes (18) are provided, which are respectively connected to the front and rear wheels (1) of the rail trolley. The two brakes (18) are respectively connected to the tail ends of the longitudinal connecting rods (13) of the two elastic telescopic brake rods. A linkage mechanism is provided between the longitudinal connecting rods (13) of the two elastic telescopic brake rods. The linkage mechanism includes two control rods (11). The two control rods (11) are connected to the two longitudinal connecting rods (13) to form a parallelogram four-bar linkage mechanism. Each control rod (11) is rotatably connected to the frame (5) of the rail trolley through a rotating shaft set between the two longitudinal connecting rods (13).

2. The labor-saving short-distance round-trip rail transport device according to claim 1, characterized in that, One end of the control lever (11) is provided with an operating handle, and the other end corresponds to the control lever limit bolt (9) fixed on the frame (5).

3. The labor-saving short-distance round-trip rail transport device according to claim 2, characterized in that, The first end of the impact rod (12) is provided with an impact rod position adjustment bolt (17).

4. The labor-saving short-distance round-trip rail transport device according to claim 1, characterized in that, The trolley frame (5) is equipped with a hopper.

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