A multi-control manual brake system and railway vehicle

Abstract

The application provides a multi-control hand brake system and a railway vehicle, and belongs to the technical field of railway vehicles. The multi-control hand brake system comprises a transmission mechanism, a plurality of driving mechanisms, a steel cable, a brake clamp unit and a display unit. The transmission mechanism is arranged on a vehicle body frame. The transmission mechanism comprises a driven gear and a lifting assembly. The driving mechanism comprises a driving gear and a driving part connected in rotation. The plurality of driving gears are connected in meshing with the driven gear. The plurality of driving parts extend in a direction away from the transmission mechanism and are respectively arranged inside and outside the vehicle body. One end of the steel cable is connected with the lifting assembly. The other end of the steel cable is connected with the brake clamp unit. The display unit comprises a conducting part connected with the lifting assembly and a display part connected with the conducting part. The multi-control hand brake system can be controlled inside and outside the vehicle body. The operation position is not limited. The brake state of the vehicle body can be observed conveniently through the display part.

Description

Technical Field

[0001] This invention belongs to the field of rail vehicle technology, and more specifically, relates to a multi-point control handbrake system and a rail vehicle. Background Technology

[0002] The handbrake system uses human power as the primary force to generate braking force, which is then amplified to achieve safe parking and braking of the vehicle. It is mainly used in the following situations: adjusting speed or braking to stop the vehicle during shunting operations to ensure safety; and preventing runaway when trains or vehicles are parked on slopes or in strong winds. Because it allows for single-vehicle control when vehicles are detached and parked individually, it is widely used in rail vehicles and large track maintenance machinery.

[0003] Currently, workers operate the handbrake system from inside the vehicle using a crank handle. After operation, they must get out of the vehicle to observe the status of the brake caliper unit with the handbrake engaged, or two people work together: one controls the handbrake from inside the vehicle, while the other observes the brake caliper unit from outside to ensure it is functioning correctly. This method restricts the operating position of the handbrake system and makes it difficult to observe the vehicle's braking status. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-point control handbrake system and rail vehicle to solve the technical problems of limited operating positions and inconvenience in observing the braking status of the vehicle body in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a multi-point controlled handbrake system, including a transmission mechanism, multiple drive mechanisms, a steel cable, a brake caliper unit and a display unit;

[0006] The transmission mechanism is used for mounting on the vehicle chassis; the transmission mechanism includes a driven gear rotatably connected and a lifting assembly connected to the driven gear;

[0007] The drive mechanism includes a drive gear rotatably connected to the drive gear and a drive unit connected to the drive gear. The drive gears are meshed with the driven gears. The drive units extend in a direction away from the transmission mechanism and are located inside and outside the vehicle body, respectively.

[0008] One end of the steel cable is connected to the lifting assembly; the other end is connected to the brake caliper unit.

[0009] The display unit includes a conductive element connected to the lifting component and a display element connected to the conductive element.

[0010] In one possible implementation, the lifting assembly includes a screw connected to the driven gear and a nut threaded onto the screw; the steel cable and the conductor are both connected to the nut.

[0011] In one possible implementation, the transmission mechanism further includes a housing fixedly mounted on the vehicle chassis, wherein the driven gear, the screw, and the plurality of driving gears are all mounted in the housing and are rotatably connected to the housing.

[0012] In one possible implementation, the drive unit includes a drive shaft and a crank connected to the drive shaft. One end of the drive shaft is connected to the corresponding drive gear, and the other end extends upward into the vehicle body or horizontally outward into the vehicle body in a direction away from the drive gear.

[0013] In one possible implementation, the crank handle is provided with a connecting hole and a keyway formed on the inner wall of the connecting hole, and the drive shaft is provided with a key that mates with the keyway; the drive shaft is provided with a return spring with one end connected to the crank handle and a dust cover arranged around the return spring.

[0014] In one possible implementation, the crank handle is provided with a first mark corresponding to the keyway, and the drive shaft is provided with a second mark corresponding to the key.

[0015] In one possible implementation, the drive shaft includes a crank shaft, a universal coupling, a connecting shaft, and a drive shaft. The drive unit also includes a bracket, and the crank shaft, the connecting shaft, the universal coupling, and the drive shaft are mounted on the bracket. The bracket is also provided with a bearing that mates with the crank shaft.

[0016] In one possible implementation, the display is mounted on the outside of the vehicle body, and the display includes a compressed air source, a valve, an indicator, and several pipes. The compressed air source, the valve, and the indicator are connected through the pipes. The conductive element is connected to the valve and is used to open or close the valve.

[0017] In one possible implementation, the steel cable includes an outer tube, an inner liner tube, and a steel wire rope arranged from the outside in, with the steel wire rope slidably connected to the inner liner tube.

[0018] The beneficial effects of the multi-point control handbrake system provided by this invention are as follows: Compared with the prior art, the multi-point control handbrake system of this invention, in use, has the transmission mechanism installed on the vehicle chassis, wherein the driven gear is rotatably connected, and the lifting component is connected to the driven gear; the driving gears on each drive mechanism are engaged with the driven gears, and the multiple drive parts connected to multiple driving gears are located inside and outside the vehicle body respectively, so that the operator can operate the handbrake system inside and outside the vehicle body without being restricted in the operating position; and a display is installed on the vehicle body. When the drive unit is activated, the driving gears and driven gears rotate, thereby causing the lifting component to rise and pull the steel cable, which in turn causes the brake caliper unit to brake the vehicle body; at the same time, the lifting component changes its action on the display through the transmission rod during the rising process, and the operator can easily observe the braking status of the vehicle body through the display. In this way, the operator can operate the handbrake system inside and outside the vehicle body without being restricted in the operating position, and can easily observe the braking status of the vehicle body through the display.

[0019] Another object of the present invention is to provide a rail vehicle including any of the above-described multi-point control handbrake systems.

[0020] The rail vehicle provided by this invention employs a multi-point controlled handbrake system, allowing operators to control the handbrake system both inside and outside the vehicle body without being restricted by their operating position, and conveniently observe the braking status of the vehicle body through a display device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a handbrake system with multiple controls provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the transmission mechanism provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the box provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram showing the connection between the crank handle and the drive shaft provided in an embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of the drive mechanism provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the principle of a handbrake system with multiple controls provided in an embodiment of the present invention.

[0028] The following are the labeling elements in the figure:

[0029] 1. Transmission mechanism; 11. Driven gear; 12. Lifting assembly; 13. Screw; 14. Nut; 15. Housing; 2. Drive mechanism; 21. Drive gear; 22. Drive unit; 23. Drive shaft; 231. Crankshaft; 232. Connecting shaft; 233. Universal coupling; 234. Drive shaft; 24. Crankshaft; 25. Return spring; 26. Dust cover; 27. Keyway; 28. Key; 29. ​​Bearing; 3. Steel cable; 4. Brake caliper unit; 5. Display unit; 51. Transmission component; 52. Display component; 53. Compressed air source; 54. Valve; 55. Indicator; 56. Pipeline; 6. Vehicle chassis. Detailed Implementation

[0030] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Please see Figures 1 to 6 The present invention will now describe a multi-point controlled handbrake system. A multi-point controlled handbrake system includes a transmission mechanism 1, multiple drive mechanisms 2, a steel cable 3, a brake caliper unit 4, and a display unit 5.

[0035] The transmission mechanism 1 is used to be mounted on the vehicle body chassis 6; the transmission mechanism 1 includes a driven gear 11 rotatably connected and a lifting assembly 12 connected to the driven gear 11;

[0036] The drive mechanism 2 includes a drive gear 21 rotatably connected to the drive gear 21 and a drive part 22 connected to the drive gear 21. The multiple drive gears 21 are all meshed with the driven gears 11. The multiple drive parts 22 extend in a direction away from the transmission mechanism 1 and are located inside the vehicle body and outside the vehicle body, respectively.

[0037] One end of the steel cable 3 is connected to the lifting assembly 12; the other end is connected to the brake caliper unit 4.

[0038] The display unit 5 includes a conductor 51 connected to the lifting assembly 12 and a display 52 connected to the conductor 51.

[0039] The multi-point control handbrake system provided by this invention, compared with the prior art, allows for the following operation: the transmission mechanism 1 is mounted on the vehicle chassis 6, with the driven gear 11 rotatably connected and the lifting assembly 12 connected to the driven gear 11; the driving gears 21 on each drive mechanism 2 engage with the driven gears 11, and multiple drive units 22 connected to the multiple driving gears 21 are located inside and outside the vehicle body, respectively. This allows operators to control the handbrake system from both inside and outside the vehicle body, with no restriction on the operating position; and a display 52 is installed on the vehicle body for operation. The drive unit 22 rotates the drive gear 21 and the driven gear 11, which in turn causes the lifting assembly 12 to rise and pull the steel cable 3. The steel cable 3 then brakes the vehicle body using the brake caliper unit 4. At the same time, the lifting assembly 12 changes its action on the display 52 through the transmission member 51 during the rising process, allowing the operator to easily observe the braking status of the vehicle body through the display 52. ​​In this way, the operator can control the hand braking system both inside and outside the vehicle body, with no restrictions on the operating position, and can easily observe the braking status of the vehicle body through the display 52.

[0040] Please see Figures 1 to 3 , Figure 6As a specific embodiment of the multi-point control handbrake system provided by the present invention, the lifting assembly 12 includes a screw 13 connected to the driven gear 11 and a nut 14 threaded onto the screw 13; the steel cable 3 and the conductor 51 are both connected to the nut 14; the driving unit 22 drives the driving gear 21 to rotate, and the driven dimension rotates with the driving gear 21, thereby causing the screw 13 mounted on the driven gear 11 to rotate to form a helical transmission. As the screw 13 rotates, it drives the nut 14 to move up and down, causing the steel cable 3 to be pulled or pushed, and causing the conductor 51 to move and change the state of the display 52. ​​In this way, during the operation of the lifting assembly 12, the nut 14 moves along the length direction of the screw 13, while the overall size of the lifting assembly 12 does not change. Two vertical plates are installed on the vehicle body frame 6, and a guide rod is fixed between the two vertical plates and arranged parallel to the screw 13. The nut 14 is provided with a guide hole connected to the guide rod.

[0041] Please see Figures 1 to 3 As a specific embodiment of the multi-point control handbrake system provided by the present invention, the transmission mechanism 1 further includes a housing 15 fixedly installed on the vehicle chassis 6. A driven gear 11, a screw 13, and multiple driving gears 21 are all installed inside the housing 15 and rotatably connected to it. The housing 15 is fixedly installed on the vehicle chassis 6 and is a long rectangular housing 15, laid flat. The driven gear 11 is vertically arranged and rotatably connected to the wall of the housing 15. The screw 13 is horizontally arranged and one end is fixedly connected to the end face of the driven gear 11. Multiple driving gears 21 are installed in the housing 15, and each driving gear 21 meshes with the driven gear 11, and the driving gears 21 are rotatably connected to the wall of the housing 15. Installing the driven gear 11, screw 13, and multiple driving gears 21 inside the housing 15 ensures that the driven gear 11, screw 13, and multiple driving gears 21 operate smoothly and accurately.

[0042] Please see Figure 1 , Figure 4 and Figure 5 As a specific embodiment of the multi-point control handbrake system provided by the present invention, the drive unit 22 includes a drive shaft 23 and a crank handle 24 connected to the drive shaft 23. One end of the drive shaft 23 is connected to the corresponding drive gear 21, and the other end extends upward into the vehicle body or horizontally outward into the vehicle body in a direction away from the drive gear 21. One end of the drive shaft 23 is connected to the drive gear 21, and the other end extends upward, left, and right respectively. The upward-extending drive shaft 23 enters the vehicle body, while the left- and right-extending drive shafts 23 enter the vehicle body. The crank handle 24 is mounted on the drive shaft 23, and the operator operates the crank handle 24 to drive the drive shaft 23 to rotate. Alternatively, the crank handle 24 can be detachably connected to the drive shaft 23 for safer use.

[0043] Please see Figure 4 As a specific embodiment of the multi-point control handbrake system provided by the present invention, the crank handle 24 is provided with a connecting hole and a keyway 27 formed on the inner wall of the connecting hole. The drive shaft 23 is provided with a key 28 that is fitted with the keyway 27. The drive shaft 23 is provided with a return spring 25, one end of which is connected to the crank handle 24, and a dust cover 26 arranged around the return spring 25. The crank handle 24 is installed at the end of the drive shaft 23, the key 28 is installed on the outer surface of the drive shaft 23, and the return spring 25 is fitted on the drive shaft 23 and corresponds to the key 28. When the crank handle 24 is pushed to move along the drive shaft 23 and overcomes the elastic force of the return spring 25, until the keyway 27 on the crank handle 24 is fitted with the key 28, the crank handle 24 is turned to make the drive shaft 23 rotate. The dust cover 26 is installed on the return spring 25 to provide a sealing effect and prevent external dust and impurities from entering the drive shaft 23. When the handbrake system is not needed, the keyway 27 and the key 28 are disengaged under the action of the return spring 25. The keyway 27 is designed with a flared opening structure.

[0044] Please see Figure 4 and Figure 5 As a specific embodiment of the multi-point control handbrake system provided by the present invention, the crank handle 24 is provided with a first mark corresponding to the keyway 27, and the transmission shaft 23 is provided with a second mark corresponding to the key 28. To ensure accurate installation of the keyway 27 on the crank handle 24 and the key 28 on the transmission shaft 23, a first mark and a second mark are respectively provided on the crank handle 24 and the transmission shaft 23. The first mark corresponds to the keyway 27, and the second mark corresponds to the key 28. Therefore, when the operator operates the crank handle 24 to align the first mark with the second mark on the transmission shaft 23, the keyway 27 and the key 28 are aligned. Then, the operator pushes the crank handle 24 on the transmission shaft 23 until the keyway 27 and the key 28 are installed together, making the operation convenient and accurate. The first and second marks are triangular groove color markings.

[0045] Please see Figure 1 and Figure 5As a specific embodiment of the multi-point control handbrake system provided by the present invention, the transmission shaft 23 includes a crank shaft 231, a universal coupling 233, a connecting shaft 232, and a drive shaft 234. The drive unit 22 also includes a bracket, on which the crank shaft 231, connecting shaft 232, universal coupling 233, and drive shaft 234 are mounted. The bracket is also provided with a bearing 29 that mates with the crank shaft 231. In this way, the transmission shaft 23 can extend toward both sides of the vehicle body, allowing the operator to drive the transmission shaft 23 to rotate using a crank 24 on both sides of the vehicle body. One end of the drive shaft 234 is connected to the drive gear 21, while the connecting shaft 232, universal coupling 233, and crank shaft 231 are sequentially arranged and connected until the crank shaft 231 extends outside the vehicle body. Furthermore, a bearing 29 is installed on the chassis 6, and a crank handle 24 is connected to the inner ring of the bearing 29; multiple bearings 29 are provided so that the connecting shaft 232 is connected to the inner ring of the bearing 29.

[0046] Please see Figure 6 As a specific embodiment of the multi-point control handbrake system provided by the present invention, the display element 52 is installed on the outside of the vehicle body. The display element 52 includes a compressed air source 53, a valve 54, an indicator 55, and several pipes 56. The compressed air source 53, the valve 54, and the indicator 55 are connected through the pipes 56. The conductor 51 is connected to the valve 54 and is used to open or close the valve 54. When the operator operates the handbrake system to open, the drive unit 22 controls the movement of the lifting assembly 12 by means of the drive gear 21 and the driven gear 11. The conductor 51 moves up and down with the lifting assembly 12, so that the conductor 51 acts on the valve 54, opening or closing the valve 54. This changes the flow direction of the compressed air source 53 in the pipe 56, and changes the force on the indicator 55 connected to the pipe 56. Therefore, the operator can directly judge the current state of the handbrake system by observing the changes in the indicator 55.

[0047] Valve 54 is a lever valve. Since the transmission mechanism 1 of the handbrake system is located under the vehicle, the lever valve is integrated into the housing 15 of the transmission mechanism 1 to prevent damage from foreign objects. The opening and closing of the lever valve's pipe interface is controlled by the nut 14 in the lifting assembly 12. One end of the conductor 51 is connected to the nut 14, and the other end is connected to the roller of the lever valve. When the lever valve interface is closed, the indicator 55 shows the handbrake is released; when the handbrake system is activated, the conductor 51 closes the lever valve interface, and the indicator 55 shows the handbrake system is in a braking state. To prevent damage to the lever valve, a limit sleeve is provided to limit the movement of the nut 14.

[0048] Please see Figure 1 and Figure 6As a specific embodiment of the multi-point control handbrake system provided by the present invention, the steel cable 3 includes an outer tube, an inner liner tube, and a steel wire rope arranged from the outside to the inside. The steel wire rope and the inner liner tube are slidably connected. The main load-bearing component of the steel cable 3 is the steel wire rope. During the operation of the handbrake system, the movement of the steel cable 3 is the sliding friction between the steel wire rope and the inner liner tube. The sliding friction coefficient between the stainless steel steel wire rope and the polytetrafluoroethylene inner liner tube is only 0.01-0.10. The steel cable 3 near the lifting component 12 has a total of 6 layers in its outer tube and inner liner. The outer tube includes braided mesh, heat shrink tubing, wound steel wire, stranded steel wire and spring tube arranged from the outside to the inside. The steel cable 3 near the brake caliper unit 4 has a total of 4 layers in its outer tube and inner liner. The outer tube includes braided mesh, heat shrink tubing and spring tube arranged from the outside to the inside. This design makes the part of the steel cable 3 on the brake caliper unit 4 more flexible while ensuring the strength of the steel cable 3, thereby reducing the thrust of the steel cable 3 on the caliper and solving the problem of brake pad wear caused by the difficulty in laying out the steel cable 3 and the large bending stress.

[0049] Not shown in the figure, this embodiment of the invention also provides a rail vehicle, which includes any of the above-mentioned multi-point control handbrake systems.

[0050] The rail vehicle provided by the present invention adopts the above-mentioned multi-point control handbrake system. Therefore, the operator can operate the handbrake system both inside and outside the vehicle body, with no restriction on the operating position, and can conveniently observe the braking status of the vehicle body through the display 52.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-point controlled handbrake system, characterized in that, It includes a transmission mechanism, multiple drive mechanisms, steel cables, a brake caliper unit, and a display unit; The transmission mechanism is used for mounting on the vehicle chassis; the transmission mechanism includes a driven gear rotatably connected and a lifting assembly connected to the driven gear; The drive mechanism includes a drive gear rotatably connected to the drive gear and a drive unit connected to the drive gear. The drive gears are meshed with the driven gears. The drive units extend in a direction away from the transmission mechanism and are located inside and outside the vehicle body, respectively. One end of the steel cable is connected to the lifting assembly; the other end is connected to the brake caliper unit. The display unit includes a conductive element connected to the lifting component and a display element connected to the conductive element; The drive unit includes a drive shaft and a crank handle connected to the drive shaft. One end of the drive shaft is connected to a corresponding drive gear, and the other end extends upward into the vehicle body or horizontally outward to the outside of the vehicle body in a direction away from the drive gear. The crank handle has a connecting hole and a keyway formed on the inner wall of the connecting hole. The drive shaft has a key that mates with the keyway. A return spring with one end connected to the crank handle and a dust cover arranged around the return spring are fitted on the drive shaft. The crank handle is installed at the end of the drive shaft, the key is installed on the outer surface of the drive shaft, and the return spring is fitted on the drive shaft and corresponds to the key. When the crank handle is pushed to move along the drive shaft and overcomes the elastic force of the return spring until the keyway on the crank handle mates with the key, the crank handle is turned to make the drive shaft rotate. The dust cover is installed on the return spring to provide a sealing effect. When the handbrake system is not needed, the keyway is disengaged from the key under the action of the return spring. The crank handle has a first mark corresponding to the keyway, and the drive shaft has a second mark corresponding to the key.

2. The multi-point controlled handbrake system as described in claim 1, characterized in that, The lifting assembly includes a screw connected to the driven gear and a nut threaded onto the screw; the steel cable and the conductive element are both connected to the nut.

3. The multi-point controlled handbrake system as described in claim 2, characterized in that, The transmission mechanism also includes a housing fixedly mounted on the vehicle chassis. The driven gear, the screw, and multiple driving gears are all mounted in the housing and are rotatably connected to the housing.

4. The multi-point controlled handbrake system as described in claim 1, characterized in that, The drive shaft includes a crank shaft, a universal coupling, a connecting shaft, and a drive shaft. The drive unit also includes a bracket. The crank shaft, the connecting shaft, the universal coupling, and the drive shaft are mounted on the bracket. The bracket is also provided with a bearing that mates with the crank shaft.

5. The multi-point controlled handbrake system as described in claim 1, characterized in that, The display is mounted on the outside of the vehicle body. The display includes a compressed air source, a valve, an indicator, and several pipes. The compressed air source, the valve, and the indicator are connected through the pipes. The conductive element is connected to the valve and is used to open or close the valve.

6. The multi-point controlled handbrake system as described in claim 1, characterized in that, The steel cable includes an outer tube, an inner liner tube, and a steel wire rope arranged from the outside to the inside, and the steel wire rope is slidably connected to the inner liner tube.

7. A rail vehicle, characterized in that, Includes a multi-point controlled handbrake system as described in any one of claims 1-6.

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