Emergency braking structure of rail conveyor

Abstract

The invention relates to the field of rail conveyors, in particular to a rail conveyor emergency braking structure which comprises a rack and a loading container. The loading container is provided with a wheel shaft, a fixing rod and a brake ejector rod, the wheel shaft is provided with a gear and a brake drum, the gear is meshed with the rack, the brake ejector rod is connected with the fixing rod through an elastic piece, the brake ejector rod is provided with a brake shoe used for abutting against the inner wall of the brake drum for friction braking, and the brake ejector rod is connected with the fixing rod in a clamped mode through a detachable plug pin. And the bolt is connected with a driving device through a pre-tensioning piece. The emergency braking structure of the rail conveyor can trigger braking in an emergency state, does not affect running of the rail conveyor in a normal state, is triggered in a pure mechanical mode, does not need external power supply guarantee, is simple in structure and obvious in braking effect, and can quickly release braking through manual operation after the braking device is triggered.

Description

Technical Field

[0001] The present invention relates to the field of rail transporters, and particularly to an emergency braking structure for a rail transporter. Background Art

[0002] The rail transporter is laid with tracks according to the terrain and is used to transport fruits and fertilizers, which well solves the problem of difficult rural employment. The structure of the rail transporter can refer to the Chinese patent application with the application number CN202410080641.6 and the name of a remote control and safety monitoring system for a rail transporter. It mainly consists of a drive transmission device, a control device, tracks, a load box, etc. The drive transmission device and the load box are hinged by a connecting rod. For a self-propelled rail transporter powered by an internal combustion engine (gasoline engine, diesel engine), in order to ensure operation safety, a traveling brake, a parking brake and a speed limit brake are provided, and the parking brake also serves as an emergency brake. The above three braking devices are all arranged on the drive transmission device, and the load box generally does not have an independent emergency braking device. Under normal circumstances, the drive transmission device and the load box are connected by a connecting rod, and the load box is driven or braked passively. If the connecting rod breaks or the connecting parts fall off during operation, resulting in an accidental separation of the drive transmission device and the load box, at this time the load box is in an uncontrollable state, and the load box may stall, thus causing problems such as loss of life and property of personnel. Among them, except that the speed limit brake can automatically limit the speed when the speed is relatively fast, the other two brakes need to be manually operated or braked passively when driving to a designated position. The load box is connected to the drive transmission device through a connecting rod and is driven or braked passively, and the load box itself does not have a braking device. For a small number of load boxes with a braking device, generally, it is triggered to brake by measuring speed through a power supply or infrared ranging, and the structure is complex, or the braking device is triggered by installing a lever at a designated position. Once the power supply is cut off or fails, the braking device of this load box cannot be triggered. There is also a trigger by installing a lever at a designated position, which cannot be used in an emergency state. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an emergency braking structure for a rail transporter with a simple structure and reliable performance.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: an emergency braking structure for a rail transporter, including a rack and a load box; The load box is provided with a wheel axle, a fixed rod and a braking push rod. A gear and a brake drum are arranged on the wheel axle. The gear meshes with the rack. The braking push rod is connected to the fixed rod through an elastic member. The braking push rod is provided with a brake shoe for friction braking against the inner wall of the brake drum. The braking push rod is clamped to the fixed rod through a detachable pin, and the pin is connected to a driving device through a pre-tensioning member.

[0005] Further, the braking ejector rod includes a first connecting rod and a second connecting rod that are perpendicular to each other. The first connecting rod is fixedly connected to the fixed rod, the second connecting rod is slidably connected to the first connecting rod, the second connecting rod is connected to the fixed rod through an elastic member, the second connecting rod is clamped to the fixed rod through a bolt, and the brake shoe is connected to the second connecting rod.

[0006] Further, the braking ejector rod further includes a third connecting rod. One end of the third connecting rod is connected to the second connecting rod, the other end of the third connecting rod is slidably inserted into the fixed rod, and the third connecting rod is provided with a jack for the bolt to insert.

[0007] Further, it further includes a track body. The rack is arranged on the track body, and the load-carrying box is provided with a driven wheel set, and the driven wheel set is arranged on the track body.

[0008] Further, the driven wheel set is connected to the mounting bracket, and the wheel axle, the fixed rod and the braking ejector rod are all arranged on the mounting bracket.

[0009] Further, the bolt is provided with a connecting ring for fixing the pre-tensioning member.

[0010] Further, one end of the brake shoe is provided with a fulcrum shaft connected to the load-carrying box.

[0011] Further, the other end of the brake shoe is provided with a friction member that frictionally brakes against the inner wall of the brake drum.

[0012] Further, the elastic member is a limit spring.

[0013] Further, the pre-tensioning member is a brake rope.

[0014] The beneficial effects of the present invention are as follows: An emergency braking structure for a track transport vehicle changes the power supply trigger to a mechanical trigger, simplifies the structure at the same time, and improves reliability. A mechanical braking device is added to the wheel axle. Under normal operating conditions, the load-carrying box moves driven by the driving device, and the gear meshes with the rack. When the connection between the driving device and the load-carrying box fails and the distance suddenly becomes larger, as an insurance, the pre-tensioning member triggers the mechanical braking device on the wheel axle, so that the bolt is pulled out, and the clamping structure between the braking ejector rod and the fixed rod fails. The elastic member restores to drive the brake shoe of the braking ejector rod to abut against the inner wall of the brake drum for frictional braking. The braking torque generated by the frictional braking is transmitted to the gear on the load-carrying box through the wheel axle, and the gear will mesh with the rack on the track, realizing braking without external force interference. The emergency braking structure for a track transport vehicle provided by the present invention can trigger braking in an emergency state, does not affect the driving of the track transport vehicle under normal conditions, is purely mechanically triggered, does not require external power supply guarantee, has a simple structure, obvious braking effect, and can be manually operated after the braking device is triggered to quickly release the braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an emergency braking structure for an orbital transport vehicle; Figure 2 It is a sectional view taken along line AA of the emergency braking structure for an orbital transport vehicle; Figure 3 It is a schematic view in the direction B of the emergency braking structure for an orbital transport vehicle; Figure 4 It is a structural schematic diagram of a safety rope; Label description: 1, rack; 2, load-carrying cargo box; 21, axle; 211, gear; 212, brake drum; 22, fixed rod; 23, brake push rod; 231, brake shoe; 2311, fulcrum shaft; 2312, friction member; 232, first connecting rod; 233, second connecting rod; 234, third connecting rod; 2341, jack; 24, elastic member; 25, bolt; 251, connecting ring; 26, driven wheel set; 27, mounting bracket; 3, pre-tensioning member; 4, driving device; 5, track body; 6, connecting rod; 7, safety rope. Specific implementation manner

[0016] To illustrate in detail the technical content, achieved purpose and effect of the present invention, the following is described in conjunction with the implementation manner and in coordination with the attached drawings.

[0017] Please refer to Figures 1 to 4 As shown, an emergency braking structure for an orbital transport vehicle of the present invention includes a rack 1 and a load-carrying cargo box 2; The load-carrying cargo box 2 is provided with an axle 21, a fixed rod 22 and a brake push rod 23. A gear 211 and a brake drum 212 are provided on the axle 21. The gear 211 meshes with the rack 1. The brake push rod 23 is connected to the fixed rod 22 through an elastic member 2,341. The brake push rod 23 is provided with a brake shoe 231 for friction braking against the inner wall of the brake drum 212. The brake push rod 23 is detachably clamped to the fixed rod 22 through a bolt 25. The bolt 25 is connected to the driving device 4 through a pre-tensioning member 3.

[0018] As can be seen from the above description, the beneficial effects of the present invention are as follows: An emergency braking structure for an orbital transporter changes the power supply trigger to a mechanical trigger, simplifies the structure, and improves reliability. A mechanical braking device is added to the wheel axle 21. In the normal operating state, the load-carrying cargo box 2 moves driven by the driving device 4, and the gear 211 meshes with the rack 1. When the connection between the driving device 4 and the load-carrying cargo box 2 fails and the distance suddenly becomes larger, the pre-tensioning member 3 acting as an insurance triggers the mechanical braking device on the wheel axle 21, causing the pin 25 to be pulled out, and the clamping structure between the braking ejector rod 23 and the fixed rod 22 fails. The elastic member 24 restores to drive the brake shoe 231 of the braking ejector rod 23 to abut against the inner wall of the brake drum 212 for frictional braking. The braking torque generated by the frictional braking is transmitted through the wheel axle 21 to the gear 211 on the load-carrying cargo box 2, and the gear 211 will mesh with the rack 1 on the track to achieve braking without external force interference. The emergency braking structure for the orbital transporter provided by the present invention can trigger braking in an emergency state, does not affect the driving of the orbital transporter in the normal state, is purely mechanically triggered, does not require external power supply guarantee, has a simple structure, obvious braking effect, and can be manually operated to quickly release the braking after the braking device is triggered.

[0019] In an alternative embodiment, the braking ejector rod 23 includes a first connecting rod 232 and a second connecting rod 233 that are perpendicular to each other. The first connecting rod 232 is fixedly connected to the fixed rod 22, the second connecting rod 233 is slidably connected to the first connecting rod 232, the second connecting rod 233 is connected to the fixed rod 22 through the elastic member 24, the second connecting rod 233 is clamped to the fixed rod 22 through the pin 25, and the brake shoe 231 is connected to the second connecting rod 233.

[0020] As can be seen from the above description, the first connecting rod 232 and the second connecting rod 233 are in an L-shaped structure, and the second connecting rod 233 has a tendency to make the brake shoe 231 abut against the inner wall of the brake drum 212 under the support of the elastic member 24.

[0021] In an alternative embodiment, the braking ejector rod 23 further includes a third connecting rod 234. One end of the third connecting rod 234 is connected to the second connecting rod 233, the other end of the third connecting rod 234 is slidably inserted into the fixed rod 22, and the third connecting rod 234 is provided with a jack 2341 for inserting the pin 25.

[0022] As can be seen from the above description, the function of the third connecting rod 234 is to fix the braking ejector rod 23 by the clamping of the pin 25 and the fixed rod 22, and at the same time guide the movement of the braking ejector rod 23 through the sliding fit between the fixed rod 22 and the third connecting rod 234.

[0023] In an alternative embodiment, it further includes a track main body 5. The rack 1 is arranged on the track main body 5, and the load-carrying cargo box 2 is provided with a driven wheel set 26, and the driven wheel set 26 is arranged on the track main body 5.

[0024] As can be seen from the above description, the load carrier 2 travels on the track main body 5 through the driven wheel set 26.

[0025] In an alternative embodiment, the driven wheel set 26 is connected to the mounting bracket 27, and the wheel axle 21, the fixing rod 22, and the braking push rod 23 are all arranged on the mounting bracket 27.

[0026] As can be seen from the above description, the wheel axle 21, the fixing rod 22, and the braking push rod 23 are all mounted on the driven wheel set 26 through the mounting bracket 27, with a reasonable structure and space saving.

[0027] In an alternative embodiment, the bolt 25 is provided with a connecting ring 251 for fixing the pre-tensioning member 3.

[0028] As can be seen from the above description, the connecting ring 251 functions to fix the pre-tensioning member 3. When the connection between the driving device 4 and the load carrier 2 fails and the distance suddenly becomes larger, the pre-tensioning member 3 pulls the connecting ring 251 to pull out the bolt 25.

[0029] In an alternative embodiment, one end of the brake shoe 231 is provided with a fulcrum shaft 2311 connected to the load carrier 2.

[0030] As can be seen from the above description, the brake shoe 231 uses the fulcrum shaft 2311 as a support point. When the elastic member 24 restores, it drives the brake shoe 231 of the braking push rod 23 to expand outward around the fulcrum shaft 2311. The outer side of the brake shoe 231 contacts the inner wall of the brake drum 212, generating sliding friction. The brake drum 212 is subjected to the frictional force, and a moment opposite to the rotation direction of the gear 211 is formed on the inner wall of the brake drum 212. It is transmitted to the gear 211 through the wheel axle 21, and the gear 211 meshes with the rack 1 on the track to complete braking.

[0031] In an alternative embodiment, the other end of the brake shoe 231 is provided with a friction member 2312 for frictional braking with the inner wall of the brake drum 212.

[0032] In an alternative embodiment, the elastic member 24 is a limiting spring.

[0033] As can be seen from the above description, compressing the limiting spring makes the braking push rod 23 in a centered and non-eccentric load state, and the brake shoe 231 maintains a set gap with the inner wall of the brake drum 212.

[0034] In an alternative embodiment, the pre-tensioning member 3 is a brake rope.

[0035] As can be seen from the above description, the brake rope is used as a safety rope. Before use, adjust the length of the brake rope to pre-tighten the brake rope. When the distance between the driving device 4 and the load box 2 becomes smaller, this brake does not work, and the braking is carried out by relying on the braking device of the driving transmission device itself. When the brake is triggered, if you want to release the brake, you can manually compress the limit spring and insert the pin 25 back into the fixed rod 22 again.

[0036] Please refer to Figures 1 to 4 As shown in the figure, Embodiment 1 of the present invention is: an emergency braking structure of a rail transporter, which adopts a double-shoe brake, including a rack 1 and a load box 2; The load box 2 is provided with a wheel axle 21, a fixed rod 22 and a brake push rod 23. A synchronously rotating gear 211 and a brake drum 212 are provided on the wheel axle 21. The gear 211 meshes with the rack 1. The brake push rod 23 is connected to the fixed rod 22 through an elastic member 24. The brake push rod 23 is provided with a brake shoe 231 for friction braking against the inner wall of the brake drum 212. The brake push rod 23 is clamped to the fixed rod 22 through a detachable pin 25. The pin 25 is connected to the driving device 4 through a pre-tightening member 3. The driving device 4 and the load box 2 are connected through a connecting rod 6. When the connecting rod breaks or falls off, and there is an obvious distance change between the moving driving device 4 and the load box 2, the braking assembly works.

[0037] The brake push rod 23 includes a first connecting rod 232 and a second connecting rod 233 that are perpendicular to each other. The first connecting rod 232 is fixedly connected to the fixed rod 22. The second connecting rod 233 is slidably connected to the first connecting rod 232. The second connecting rod 233 is connected to the fixed rod 2 through the elastic member 4. The second connecting rod 233 is clamped to the fixed rod 22 through a pin 25. The brake shoe 231 is connected to the second connecting rod 233. The brake push rod 23 further includes a third connecting rod 234. One end of the third connecting rod 234 is connected to the second connecting rod 233, and the other end of the third connecting rod 234 is slidably inserted into the fixed rod 22. The third connecting rod 234 is provided with a jack 2341 for inserting the pin 25. It also includes a track main body 5. The rack 1 is arranged on the track main body 5. The load box 2 is provided with a driven wheel set 26. The driven wheel set 26 is arranged on the track main body 5. The driven wheel set 26 is connected to the mounting frame 27. The wheel axle 21, the fixed rod 22 and the brake push rod 23 are all arranged on the mounting frame 27. The pin 25 is provided with a connecting ring 251 for fixing the pre-tightening member 3. One end of the brake shoe 231 is provided with a fulcrum shaft 2311 connected to the load box 2. The other end of the brake shoe 231 is provided with a friction member 2312 for friction braking against the inner wall of the brake drum 212. The elastic member 24 is a limit spring. The pre-tightening member 3 is a brake rope.

[0038] Please refer to Figure 4As shown in the figure, Embodiment 2 of the present invention is as follows: On the basis of Embodiment 1, in order to prevent the spring from falling off after the brake push rod is pushed open, a safety rope structure is further designed. Both ends of the safety rope 7 are respectively connected to the fixed rod 22 and the second connecting rod 233.

[0039] The difference between Embodiment 3 and Embodiment 2 of the present invention is that: in order to prevent the spring from falling off after the brake push rod is pushed open, a safety baffle structure is further designed. The safety baffle is located on the movement trajectory after the brake push rod is pushed open and is used to prevent the spring from falling off.

[0040] To sum up, for the emergency braking structure of the rail transport vehicle of the present invention, the power supply trigger is changed to a mechanical trigger, while the structure is simplified and the reliability is improved. A mechanical braking device is added to the axle. Under normal operating conditions, the loaded cargo box moves driven by the driving device, and the gear meshes with the rack. When the connection between the driving device and the loaded cargo box fails and the distance suddenly becomes larger, the pre-tensioning member serving as an insurance triggers the mechanical braking device on the axle, so that the pin is pulled out, and the clamping structure between the brake push rod and the fixed rod fails. The elastic member restores to drive the brake shoe of the brake push rod to abut against the inner wall of the brake drum for frictional braking. The braking torque generated by the frictional braking is transmitted to the gear on the loaded cargo box through the axle, and the gear will then mesh with the rack on the track to achieve braking without external force interference. The emergency braking structure of the rail transport vehicle provided by the present invention can trigger braking in an emergency state, does not affect the driving of the rail transport vehicle under normal conditions, is purely mechanically triggered, does not require external power supply guarantee, has a simple structure, obvious braking effect, and can be manually operated to quickly release the braking after the braking device is triggered.

[0041] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. An emergency braking structure for an orbital transport vehicle, characterized in that, It includes a rack and a load box; The load box is provided with a wheel axle, a fixed rod and a braking ejector rod. A gear and a brake drum are arranged on the wheel axle. The gear meshes with the rack. The braking ejector rod is connected to the fixed rod through an elastic member. The braking ejector rod is provided with a brake shoe for friction braking against the inner wall of the brake drum. The braking ejector rod is clamped to the fixed rod through a detachable pin. The pin is connected to a driving device through a pre-tensioning member.

2. The emergency braking structure of the rail transporter according to claim 1, wherein, The braking ejector rod includes a first connecting rod and a second connecting rod that are perpendicular to each other. The first connecting rod is fixedly connected to the fixed rod. The second connecting rod is slidably connected to the first connecting rod. The second connecting rod is connected to the fixed rod through an elastic member. The second connecting rod is clamped to the fixed rod through a pin. The brake shoe is connected to the second connecting rod.

3. The emergency braking structure of the rail transporter according to claim 2, characterized in that, The braking ejector rod further includes a third connecting rod. One end of the third connecting rod is connected to the second connecting rod. The other end of the third connecting rod is slidably inserted into the fixed rod. The third connecting rod is provided with a jack for the pin to be inserted.

4. The emergency braking structure of the rail transporter according to claim 1, characterized in that, It further includes a track main body. The rack is arranged on the track main body. The load box is provided with a driven wheel set, and the driven wheel set is arranged on the track main body.

5. The emergency braking structure of the rail transporter according to claim 4, characterized in that The driven wheel set is connected to a mounting frame. The wheel axle, the fixed rod and the braking ejector rod are all arranged on the mounting frame.

6. The emergency braking structure of the rail transporter according to claim 1, wherein, The pin is provided with a connecting ring for fixing the pre-tensioning member.

7. The emergency braking structure of the rail transporter according to claim 1, characterized in that, One end of the brake shoe is provided with a fulcrum shaft connected to the load box.

8. The emergency braking structure of the rail transporter according to claim 1, wherein, The other end of the brake shoe is provided with a friction member for friction braking against the inner wall of the brake drum.

9. The emergency braking structure of the rail transporter according to claim 1, wherein The elastic member is a limit spring.

10. The emergency braking structure of the rail transporter according to claim 1, characterized in that, The pre-tensioning member is a brake rope.

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