Emergency rescue trolley brake mechanism

Abstract

The application discloses an emergency rescue trolley brake mechanism and relates to the field of cableway rescue.The connecting support is provided with an emergency brake mechanism at one end.In the application, the roller moves with the lever frame to contact and rotate on the surface of the steel wire rope, drives the mounting shaft to move, drives the rotating rod and the rotating disc to rotate, drives the positioning block to move, drives the moving rod to slide, drives the moving piston to reciprocate and slide in the fixed cylinder, and air continuously sprays from the heat dissipation pipe through the connecting pipe to dissipate heat on the surface of the brake wheel, so that the brake wheel is kept in a suitable working temperature range.The existing V-shaped brake pad is replaced by the brake wheel, the brake wheel is matched with the walking wheel, the steel wire rope is clamped to brake, the greater the weight on the passenger-carrying mechanism is, the greater the extrusion force of the brake wheel on the steel wire rope is, the braking force is increased, the greater the angle of the steel wire rope is, the greater the extrusion force of the brake wheel on the steel wire rope is, the braking force is also increased, and the stability and safety of the brake are improved.

Description

Technical Field

[0001] This invention relates to the field of cableway rescue technology, specifically to a braking mechanism for an emergency rescue trolley. Background Technology

[0002] A cableway rescue trolley is a specialized piece of equipment used for cableway rescue. It is mainly used to handle emergencies and malfunctions in cableway transportation. It can quickly reach the malfunction site in the cableway transportation system to carry out rapid and safe rescue and repair. The rescue trolley runs on the cableway. Once a malfunction occurs, the trolley needs to be stopped quickly by braking to prevent it from sliding out of control or colliding with other objects.

[0003] For example, the "A Cableway Rescue Device Based on a Transport Cable" with the publication number CN217575170U includes a walking mechanism, a suspension mechanism, a braking mechanism, a seat system, and an operating mechanism. The suspension mechanism is movably arranged under the walking mechanism, the braking mechanism is arranged inside the suspension mechanism, the seat system is arranged at one end of the suspension mechanism, and the operating mechanism is arranged at the other end.

[0004] In the existing technology, the main component of the existing braking mechanism is the V-shaped brake pad. When the angle of the wire rope changes, the V-shaped brake pad cannot always be perpendicular to the wire rope, resulting in local wear during braking. Furthermore, during the braking process, the friction between the braking mechanism and the wire rope generates a large amount of heat. Sustained high temperature will accelerate the aging of the braking mechanism and affect the braking effect. Summary of the Invention

[0005] The purpose of this invention is to provide a braking mechanism for an emergency rescue vehicle, which solves the problems mentioned in the background art, such as the inability of the V-shaped brake pads to always be perpendicular to the wire rope, the phenomenon of local wear during braking, and the large amount of heat generated by friction between the braking mechanism and the wire rope during braking. The rollers move with the lever frame, contact the surface of the wire rope and rotate, driving the mounting shaft to move, the rotating rod and the rotating disk to rotate, and the positioning block eccentrically set on one side of the rotating disk to move, driving the moving rod to slide. The moving piston slides back and forth inside the fixed cylinder, and air is continuously ejected from the heat dissipation pipe through the connecting pipe to dissipate heat from the surface of the brake wheel, keeping the brake wheel within a suitable operating temperature range and avoiding a decrease in the coefficient of friction due to overheating, thereby ensuring that the response speed and braking force of the braking system are kept at the optimal state.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an emergency rescue vehicle braking mechanism, comprising a connecting bracket, an emergency braking mechanism mounted on one end of the connecting bracket, a suspension travel mechanism mounted on one side of the emergency braking mechanism, the emergency braking mechanism comprising a lever frame and a brake wheel, a connecting shaft fixedly connected to one end of the lever frame, the connecting shaft being fixedly connected to the brake wheel externally, a heat dissipation mechanism mounted on one side of the brake wheel, the heat dissipation mechanism comprising a rotating rod, one end of the rotating rod being fixedly connected to one end of the connecting shaft, and a rotating disk fixedly connected to one end of the rotating rod. A positioning block is fixedly connected to one side of the disc, and a guide frame is slidably connected to the outside of the positioning block. A moving rod is fixedly connected to one side of the guide frame, and a moving piston is fixedly connected to one end of the moving rod. A fixed cylinder is slidably connected to the outside of the moving piston, and a connecting pipe is fixedly connected to one end of the fixed cylinder. A heat dissipation pipe is fixedly connected to one end of the connecting pipe. The heat dissipation mechanism is used to cool down the brake wheel during emergency braking. The emergency braking mechanism increases the compressive force on the wire rope through a lever structure, and clamps the wire rope tightly during braking. The suspension walking mechanism is used to suspend the trolley on the wire rope for movement.

[0007] Preferably, a support plate is fixedly connected to the outside of the fixed cylinder, and one end of the support plate is fixedly connected to one side of the lever frame.

[0008] Preferably, a connecting plate is fixedly connected to the outside of the heat dissipation pipe, and one end of the connecting plate is fixedly connected to one side of the support plate.

[0009] Preferably, a mounting bracket is fixedly connected to one side of the lever frame, a mounting shaft is rotatably connected to one side of the mounting bracket, a roller is fixedly connected to the outside of the mounting shaft, and a belt assembly is installed between the end of the mounting shaft and the outside of the rotating rod.

[0010] Preferably, both ends of the brake wheel are fixedly connected to heat dissipation fins, and a plurality of heat dissipation fins are distributed around the ends of the brake wheel.

[0011] Preferably, one end of the lever frame is rotatably connected to one end of the connecting bracket, a fixed shaft is installed in the middle of the lever frame, a locking groove is opened on one side of the lever frame, a locking tooth is engaged inside the locking groove, an operating rod is rotatably connected to the middle of the locking tooth, one end of the operating rod is installed on the outside of the lever frame, a return spring is installed on the inside of the operating rod, and one end of the return spring is installed on one end of the locking tooth.

[0012] Preferably, one end of the operating lever is fixedly connected to an operating shaft, and a handle is fixedly connected to the outside of the operating shaft.

[0013] Preferably, the suspension travel mechanism includes a connecting frame, one end of which is mounted on the end of a fixed shaft, and the other end of which is mounted on a suspension, with a magnetic seat mounted on the end of the suspension.

[0014] Preferably, a permanent magnet is installed on one side of the magnetic base, and a speed reducer is provided on the outside of the permanent magnet. One end of the speed reducer is rotatably connected to one side of the magnetic base.

[0015] Preferably, a speed increaser is installed on the inner side of the magnetic base, and a walking wheel is installed on the outer side of the speed increaser.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the roller moves with the lever frame, contacts and rotates with the surface of the wire rope, drives the mounting shaft to move, the rotating rod and the rotating disk to rotate, the positioning block eccentrically set on one side of the rotating disk moves, drives the moving rod to slide, the moving piston slides back and forth inside the fixed cylinder, and air is continuously sprayed out from the heat dissipation pipe through the connecting pipe to dissipate heat from the surface of the brake wheel, keeping the brake wheel within a suitable working temperature range, avoiding the decrease in the coefficient of friction due to overheating, thereby ensuring that the response speed and braking force of the braking system are kept in the best state.

[0017] 2. In this invention, the existing V-shaped brake pads are replaced with brake wheels. The brake wheels cooperate with the traveling wheels to lock the steel wire rope for braking. The greater the weight on the personnel-carrying mechanism installed at one end of the connecting bracket, the greater the squeezing force of the brake wheels on the steel wire rope, and the greater the braking force. The greater the angle of the steel wire rope, the greater the lever arm of the personnel-carrying mechanism, the greater the squeezing force of the brake wheels on the steel wire rope, and the greater the braking force, thus improving the stability and safety of braking.

[0018] 3. In this invention, the speed reducer rotates at high speed under the drive of the speed increaser, cutting the magnetic lines of force on the magnetic base and forming eddy currents on the speed reducer, which apply a reaction force to the speed increaser, keeping the rescue trolley running at a constant speed. It can automatically adjust the braking torque according to the trolley's downward speed to achieve uniform speed operation, effectively control the trolley's running speed, and ensure safe and stable operation during emergency rescue. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a braking mechanism for an emergency rescue vehicle according to the present invention; Figure 2 This is a schematic diagram of the heat dissipation mechanism connection structure of the braking mechanism of an emergency rescue vehicle according to the present invention; Figure 3 This is a schematic diagram of the first disassembly structure of the heat dissipation mechanism of the braking mechanism of an emergency rescue vehicle according to the present invention; Figure 4This is a schematic diagram of the second disassembly structure of the heat dissipation mechanism of the braking mechanism of an emergency rescue vehicle according to the present invention; Figure 5 This is a schematic diagram of the emergency braking mechanism connection structure of an emergency rescue vehicle braking mechanism according to the present invention; Figure 6 This is a schematic diagram of the suspension and travel mechanism connection structure of the braking mechanism of an emergency rescue vehicle according to the present invention; Figure 7 This is a schematic diagram of the disassembly structure of the suspension and travel mechanism of the braking mechanism of an emergency rescue vehicle according to the present invention.

[0020] In the diagram: 1. Connecting bracket; 2. Emergency braking mechanism; 21. Lever frame; 22. Brake wheel; 23. Heat dissipation fins; 24. Connecting shaft; 25. Locking slot; 26. Locking tooth; 27. Operating shaft; 28. Handle; 29. ​​Operating lever; 210. Return spring; 211. Fixed shaft; 3. Heat dissipation mechanism; 31. Fixed cylinder; 32. Rotating disk; 33. Roller; 34. Mounting bracket; 35. Mounting shaft; 36. Belt assembly; 37. Rotating rod; 38. Heat dissipation pipe; 39. Connecting plate; 310. Moving piston; 311. Connecting pipe; 312. Support plate; 313. Moving rod; 314. Guide frame; 315. Positioning block; 4. Suspension and travel mechanism; 41. Connecting bracket; 42. Reducer; 43. Suspension; 44. Magnetic base; 45. Permanent magnet; 46. Traveling wheel; 47. Speed ​​increaser. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Refer to Figure 1 - Figure 7As shown: An emergency rescue vehicle braking mechanism includes a connecting bracket 1. An emergency braking mechanism 2 is mounted on one end of the connecting bracket 1, and a suspension travel mechanism 4 is mounted on one side of the emergency braking mechanism 2. The emergency braking mechanism 2 includes a lever frame 21 and a brake wheel 22. A connecting shaft 24 is fixedly connected to one end of the lever frame 21, and the outside of the connecting shaft 24 is fixedly connected to the brake wheel 22. A heat dissipation mechanism 3 is mounted on one side of the brake wheel 22. The heat dissipation mechanism 3 includes a rotating rod 37, one end of which is fixedly connected to one end of the connecting shaft 24. A rotating disk 32 is fixedly connected to one end of the rotating rod 37. A positioning block 315 is fixedly connected to one side of the rotating disk 32. A guide frame 314 is slidably connected to the outside of the positioning block 315. A moving rod 313 is fixedly connected to one side of the guide frame 314. A moving piston 310 is fixedly connected to one end of the moving rod 313. A fixed cylinder 31 is slidably connected to the outside of the moving piston 310. A connecting pipe 311 is fixedly connected to one end of the fixed cylinder 31. One end of 11 is fixedly connected to a heat dissipation pipe 38. The heat dissipation mechanism 3 is used to cool down the brake wheel 22 of the emergency brake. The emergency brake mechanism 2 increases the squeezing force on the wire rope through the lever structure. When braking, it hugs the wire rope, which improves the stability and safety of the brake. The suspension walking mechanism 4 is used to suspend the trolley on the wire rope for the trolley to move. It can automatically adjust the braking torque according to the trolley's downward speed to achieve uniform speed operation and effectively control the trolley's running speed. The fixed cylinder 31 is fixedly connected to a support plate 312. One end of the support plate 312 is fixedly connected to one side of the lever frame 21. The heat dissipation pipe 38 is fixedly connected to a connecting plate 39. One end of the connecting plate 39 is fixedly connected to one side of the support plate 312. One side of the lever frame 21 is fixedly connected to a mounting frame 34. One side of the mounting frame 34 is rotatably connected to a mounting shaft 35. The mounting shaft 35 is fixedly connected to a roller 33. A belt assembly 36 is installed between the end of the mounting shaft 35 and the outside of the rotating rod 37.

[0023] In this embodiment, during braking, the emergency braking mechanism 2 engages with the brake wheel 22 and the traveling wheel 46 to lock the wire rope, thus braking the emergency rescue trolley. During braking, the roller 33 moves with the lever frame 21 and contacts the surface of the wire rope. The roller 33 rotates along the surface of the wire rope, driving the mounting shaft 35 to move. The belt assembly 36 consists of two pulleys and a transmission belt, driving the rotating rod 37 and the rotating disk 32 to rotate. The positioning block 315, eccentrically positioned on one side of the rotating disk 32, moves and slides inside the guide frame 314, simultaneously driving the moving rod 313 to slide at one end of the fixed cylinder 31. Through the continuous circular motion of the positioning block 315, the moving piston 310 reciprocates inside the fixed cylinder 31. The support plate 312 is used to support and fix the fixed cylinder 31, and the connecting plate 39 is used to support and fix the heat dissipation pipe 38. This allows air to be continuously drawn into and discharged from the fixed cylinder 31. Air continuously enters the fixed cylinder 31 through the heat dissipation pipe 38 and the connecting pipe 311, and is also sprayed out from the heat dissipation pipe 38 through the connecting pipe 311. Multiple nozzles are fixedly connected to the outer surface of the heat dissipation pipe 38, and the heat dissipation pipe 38 has an arc-shaped design, which can increase the heat dissipation area of ​​the outer surface of the brake wheel 22, accelerate the air flow at the brake wheel 22 and the wire rope, dissipate heat from the surface of the brake wheel 22, keep the brake wheel 22 within a suitable working temperature range, avoid the decrease in the coefficient of friction due to overheating, and thus ensure that the response speed and braking force of the braking system are kept in the best state.

[0024] Example 2: Figure 1 , Figure 2 and Figure 5 As shown, both ends of the brake wheel 22 are fixedly connected to heat dissipation fins 23, and multiple heat dissipation fins 23 are distributed around the ends of the brake wheel 22; one end of the lever frame 21 is rotatably connected to one end of the connecting bracket 1, a fixed shaft 211 is installed in the middle of the lever frame 21, a locking groove 25 is opened on one side of the lever frame 21, a locking tooth 26 is engaged inside the locking groove 25, an operating rod 29 is rotatably connected to the middle of the locking tooth 26, one end of the operating rod 29 is installed on the outside of the lever frame 21, a return spring 210 is installed on the inside of the operating rod 29, and one end of the return spring 210 is installed on one end of the locking tooth 26; one end of the operating rod 29 is fixedly connected to an operating shaft 27, and a handle 28 is fixedly connected to the outside of the operating shaft 27.

[0025] In this embodiment, a handle 28 is mounted on the outside of the operating shaft 27. By gripping the handle 28, the operating shaft 27 and the operating lever 29 rotate, causing the locking teeth 26 to engage with the locking groove 25, which in turn rotates the lever frame 21. At this time, the brake wheel 22 is not in contact with the wire rope, and the trolley can run normally. When braking is required, the handle 28 is released, and gravity causes the lever frame 21 to rotate outside the fixed shaft 211, moving the brake wheel 22 to contact the wire rope. The brake wheel 22 cooperates with the traveling wheel 46 to lock the wire rope for braking. The existing V-shaped brake pads are replaced with the brake wheel 22, and the wire rope changes angles to always ensure... The contact area between the brake wheel 22 and the wire rope remains unchanged. The emergency braking mechanism 2 operates on the lever principle. The greater the weight on the personnel carrier installed at one end of the connecting bracket 1, the greater the squeezing force of the brake wheel 22 on the wire rope, and the greater the braking force. The greater the angle of the wire rope, the greater the lever arm of the personnel carrier, and the greater the squeezing force of the brake wheel 22 on the wire rope, and the greater the braking force, thus improving the stability and safety of braking. Heat dissipation fins 23 are provided at both ends of the brake wheel 22, and the heat dissipation fins 23 are designed in a wave shape and distributed in a ring at the ends of the brake wheel 22, which can increase the contact area between the brake wheel 22 and the air and improve the heat dissipation effect.

[0026] Example 3: According to Figure 1 , Figure 6 and Figure 7 As shown, the suspended walking mechanism 4 includes a connecting frame 41, one end of which is installed at the end of the fixed shaft 211, and a suspension 43 is installed at the other end of the connecting frame 41. A magnetic seat 44 is installed at the end of the suspension 43. A permanent magnet 45 is installed on one side of the magnetic seat 44, and a speed reducer 42 is provided outside the permanent magnet 45. One end of the speed reducer 42 is rotatably connected to one side of the magnetic seat 44. A speed increaser 47 is installed inside the magnetic seat 44, and a walking wheel 46 is installed outside the speed increaser 47.

[0027] In this embodiment, the deceleration disk 42 rotates at high speed under the drive of the speed increaser 47, cutting the magnetic lines of force on the magnetic base 44 and forming eddy currents on the deceleration disk 42. The reaction force generated by the eddy currents acts on the deceleration disk 42, and the deceleration disk 42 applies a reaction force to the speed increaser 47, causing the traveling wheel 46 to decelerate. Since the magnitude of the reaction torque is proportional to the rotation speed, that is, the faster the trolley descends, the greater the reaction force applied by the deceleration disk 42 to the speed increaser 47, thereby maintaining the rescue trolley at a constant speed. It can automatically adjust the braking torque according to the trolley's descending speed to achieve constant speed operation, effectively control the trolley's running speed, and ensure safe and stable operation during emergency rescue.

[0028] The device's operation and working principle are as follows: By gripping the handle 28, the operating shaft 27 and operating lever 29 rotate, causing the locking teeth 26 to engage with the locking slot 25, which in turn rotates the lever frame 21. At this time, the brake wheel 22 is not in contact with the wire rope, allowing the trolley to run normally. During the trolley's operation, the reduction disc 42 rotates at high speed under the drive of the speed increaser 47, cutting the magnetic lines of force on the magnetic base 44 and forming eddy currents on the reduction disc 42. The reaction force generated by the eddy currents acts on the reduction disc 42, which in turn applies a reaction force to the speed increaser 47, causing the traveling wheels 46 to decelerate and the rescue trolley to run at a constant speed. When braking is required, the handle 28 is released, and gravity causes the lever frame 21 to remain stationary. The external rotation of the fixed shaft 211 causes the brake wheel 22 to move and contact the wire rope. The brake wheel 22 cooperates with the traveling wheel 46 to lock the wire rope for braking. During the braking process, the roller 33 moves with the lever frame 21 and contacts the surface of the wire rope. The roller 33 rotates along the surface of the wire rope, causing the mounting shaft 35 to move. The rotating rod 37 and the rotating disk 32 rotate, and the positioning block 315 moves, causing the moving rod 313 to slide at one end of the fixed cylinder 31. The moving piston 310 slides back and forth inside the fixed cylinder 31. Air is continuously ejected from the heat dissipation pipe 38 through the connecting pipe 311, which accelerates the airflow between the brake wheel 22 and the wire rope and dissipates heat from the surface of the brake wheel 22.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A braking mechanism for an emergency rescue vehicle, comprising a connecting bracket (1), characterized in that: An emergency braking mechanism (2) is installed at one end of the connecting bracket (1), and a suspension walking mechanism (4) is installed on one side of the emergency braking mechanism (2). The emergency braking mechanism (2) includes a lever frame (21) and a brake wheel (22). A connecting shaft (24) is fixedly connected to one end of the lever frame (21). The outside of the connecting shaft (24) is fixedly connected to the brake wheel (22). A heat dissipation mechanism (3) is installed on one side of the brake wheel (22). The heat dissipation mechanism (3) includes a rotating rod (37). One end of the rotating rod (37) is fixedly connected to one end of the connecting shaft (24). A rotating disk (32) is fixedly connected to one end of the rotating rod (37). A positioning block (315) is fixedly connected to one side of the rotating disk (32). The outer side of the position block (315) is slidably connected to a guide frame (314). A moving rod (313) is fixedly connected to one side of the guide frame (314). A moving piston (310) is fixedly connected to one end of the moving rod (313). A fixed cylinder (31) is slidably connected to the outer side of the moving piston (310). A connecting pipe (311) is fixedly connected to one end of the fixed cylinder (31). A heat dissipation pipe (38) is fixedly connected to one end of the connecting pipe (311). The heat dissipation mechanism (3) is used to cool down the brake wheel (22) of the emergency brake. The emergency brake mechanism (2) increases the squeezing force on the wire rope through the lever structure and hugs the wire rope when braking. The suspension walking mechanism (4) is used to suspend the trolley on the wire rope for walking.

2. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: The fixed cylinder (31) is fixedly connected to a support plate (312), and one end of the support plate (312) is fixedly connected to one side of the lever frame (21).

3. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: The heat dissipation pipe (38) is fixedly connected to a connecting plate (39), and one end of the connecting plate (39) is fixedly connected to one side of the support plate (312).

4. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: A mounting bracket (34) is fixedly connected to one side of the lever frame (21), and a mounting shaft (35) is rotatably connected to one side of the mounting bracket (34). A roller (33) is fixedly connected to the outside of the mounting shaft (35), and a belt assembly (36) is installed between the end of the mounting shaft (35) and the outside of the rotating rod (37).

5. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: Both ends of the brake wheel (22) are fixedly connected to heat dissipation fins (23), and multiple heat dissipation fins (23) are distributed around the ends of the brake wheel (22).

6. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: One end of the lever frame (21) is rotatably connected to one end of the connecting bracket (1). A fixed shaft (211) is installed in the middle of the lever frame (21). A locking groove (25) is opened on one side of the lever frame (21). A locking tooth (26) is locked inside the locking groove (25). An operating rod (29) is rotatably connected in the middle of the locking tooth (26). One end of the operating rod (29) is installed on the outside of the lever frame (21). A return spring (210) is installed on the inside of the operating rod (29). One end of the return spring (210) is installed on one end of the locking tooth (26).

7. The braking mechanism for an emergency rescue vehicle according to claim 6, characterized in that: One end of the operating lever (29) is fixedly connected to an operating shaft (27), and a handle (28) is fixedly connected to the outside of the operating shaft (27).

8. The braking mechanism for an emergency rescue vehicle according to claim 1, characterized in that: The suspended walking mechanism (4) includes a connecting frame (41), one end of which is installed at the end of a fixed shaft (211), and the other end of which is installed with a suspension (43), and the end of the suspension (43) is installed with a magnetic seat (44).

9. The braking mechanism for an emergency rescue vehicle according to claim 8, characterized in that: A permanent magnet (45) is installed on one side of the magnetic base (44), and a speed reducer (42) is provided on the outside of the permanent magnet (45). One end of the speed reducer (42) is rotatably connected to one side of the magnetic base (44).

10. The braking mechanism for an emergency rescue vehicle according to claim 8, characterized in that: A speed increaser (47) is installed on the inner side of the magnetic base (44), and a walking wheel (46) is installed on the outer side of the speed increaser (47).

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