A suspended bogie integrated braking device

Abstract

This utility model provides an integrated braking device for a suspended bogie, belonging to the field of railway vehicle technology. It includes a braking assembly, a transmission assembly, an air drive assembly, and a suspension assembly. The braking assembly includes a first brake beam and a second brake beam spaced apart. The transmission assembly includes a first push rod, a second push rod, a first transmission member, and a second transmission member. One end of both the first and second push rods is hinged to the second brake beam. The first and second transmission members are located at opposite ends of the air drive assembly. The first transmission member is hinged to the air drive assembly, the first brake beam, and the first push rod, respectively. The second transmission member is hinged to the air drive assembly, the first brake beam, and the second push rod, respectively. The first and second brake beams are connected to the bogie crossbeam via the suspension assembly. This utility model reduces the bogie's lower mass, improves the vehicle's dynamic performance, and also enhances the vehicle's braking and release performance.

Description

Technical Field

[0001] This utility model belongs to the field of railway vehicle technology, and in particular relates to an integrated braking device for a suspended bogie. Background Technology

[0002] The bogie base braking system is the final output device of the braking force in a railway vehicle braking system. The braking force is ultimately transmitted to the brake shoes through the bogie braking system, causing the brake shoes to press firmly against the wheel tread. This generates resistance in the opposite direction to the wheel's rotation, thus braking or releasing the wheel. The performance of the bogie base braking system directly affects the safe operation of railway vehicles. The bogie integrated braking system is characterized by its small footprint, light weight, and high transmission efficiency, making it one of the most advanced base braking methods available today.

[0003] In existing publicly available technologies, bogies often employ a basic braking device with a slider at the end of the brake beam. This basic braking device is typically installed within the guide groove of the side frame of a cast steel three-piece bogie and fixed to the bolster assembly via the upper fulcrum of a fixed lever. This installation method makes the entire mass of the basic braking device the lower mass of the bogie, which is detrimental to vehicle dynamics. When the vehicle brakes or releases, the brake beam end of the basic braking device moves along the side frame groove, generating frictional resistance with the contact surface of the side frame groove, resulting in reduced braking and release performance. Utility Model Content

[0004] In view of the defects or deficiencies in the existing technology, this utility model provides a suspended bogie integrated braking device, which reduces the bogie's unweight, improves the vehicle's dynamic performance, and also helps to improve the vehicle's braking and relief performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides an integrated braking device for a suspended bogie, including a braking assembly, a transmission assembly, an air drive assembly, and a suspension assembly. The braking assembly includes a first brake beam and a second brake beam spaced apart. The transmission assembly includes a first push rod, a second push rod, a first transmission member, and a second transmission member. One end of both the first push rod and the second push rod is hinged to the second brake beam. The first transmission member and the second transmission member are located at both ends of the air drive assembly. The first transmission member is hinged to the air drive assembly, the first brake beam, and the end of the first push rod away from the second brake beam, respectively. The second transmission member is hinged to the end of the air drive assembly, the first brake beam, and the second push rod away from the second brake beam, respectively. The first brake beam and the second brake beam are connected to the bogie crossbeam through the suspension assembly.

[0007] Furthermore, both ends of the first and second brake beams are equipped with brake shoe supports, and brake shoes are fixed inside the brake shoe supports.

[0008] Furthermore, the air-driven assembly is located on the side of the first brake beam away from the second brake beam.

[0009] Furthermore, the air-driven assembly is a brake cylinder, including a cylinder body and a piston rod, wherein the piston rod is slidable along the axial direction of the cylinder body.

[0010] Furthermore, the first push rod and the second push rod are arranged along the length of the first brake beam and are spaced at a predetermined distance.

[0011] Furthermore, the first transmission component is hinged to the first brake beam via a first hinge point, the first transmission component is hinged to the cylinder via a second hinge point, one end of the first push rod is hinged to the second brake beam, and the other end is hinged to the first transmission component via a third hinge point.

[0012] Furthermore, a first clearance hole is provided on the first brake beam, and the end of the first push rod away from the second brake beam passes through the first clearance hole and is hinged to the first transmission component.

[0013] Furthermore, the second transmission member is hinged to the first brake beam via the fourth hinge point, the second transmission member is hinged to the piston rod via the fifth hinge point, one end of the second push rod is hinged to the second brake beam, and the other end is hinged to the second transmission member via the sixth hinge point.

[0014] Furthermore, a second clearance hole is provided on the first brake beam, and the end of the second push rod away from the second brake beam passes through the second clearance hole and is hinged to the second transmission component.

[0015] Furthermore, the suspension assembly includes a first suspension rod, a second suspension rod, a third suspension rod, and a fourth suspension rod, wherein one end of the second suspension rod and the fourth suspension rod are respectively hinged to both ends of the first brake beam, and the other end is connected to the bogie crossbeam; one end of the first suspension rod and the third suspension rod are respectively hinged to both ends of the second brake beam, and the other end is connected to the bogie crossbeam.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model, by setting up a suspension assembly, connects the first and second brake beams to the bogie crossbeam through the suspension assembly, reducing the bogie's lower mass and improving the vehicle's dynamic performance. Furthermore, during vehicle braking release, the integrated braking device is only subject to frictional resistance from the rotation of the connecting parts, and this frictional resistance is relatively small, which helps improve braking and release performance.

[0018] 2. This utility model makes the brake beam more evenly stressed by setting it at both ends of the air drive assembly, preventing uneven wear of the brake shoes. At the same time, it can effectively prevent the brake beam from nodding during vehicle braking and release, thus improving the safety and reliability of the integrated braking device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the integrated braking device structure in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the ball joint connection mechanism in an embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the metal bushing connection mechanism in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the steel-rubber-steel bushing connection mechanism in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the non-metallic bushing connection mechanism in an embodiment of this utility model;

[0024] Among them, 1. Braking assembly; 101. First brake beam; 102. Second brake beam; 103. Brake shoe; 2. Transmission assembly; 201. First push rod; 202. Second push rod; 203. First transmission component; 204. Second transmission component; 211. First hinge point; 212. Second hinge point; 213. Third hinge point; 221. Fourth hinge point; 222. Fifth hinge point; 223. Sixth hinge point; 3. Air drive assembly; 301. Cylinder block; 302. Piston rod; 4. Suspension assembly; 401. First suspension rod; 402. Second suspension rod; 403. Third suspension rod; 404. 40. Bogie crossbeam; 51. Ball joint connection mechanism; 510. Ball joint; 511. Fixing bolt; 512. Locking nut; 52. Metal bushing connection mechanism; 520. First round pin; 521. Metal bushing; 522. First washer; 523. First cotter pin; 53. Steel-rubber-steel bushing connection mechanism; 530. Second round pin; 531. Steel-rubber-steel bushing; 532. Second washer; 533. Second cotter pin; 54. Non-metallic bushing connection mechanism; 540. Third round pin; 541. Non-metallic bushing; 542. Third washer; 543. Third cotter pin. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] A typical embodiment of this utility model is as follows: Figure 1As shown, a suspended bogie integrated braking device includes a braking assembly 1, a transmission assembly 2, an air drive assembly 3, and a suspension assembly 4.

[0027] The braking assembly 1 includes a first braking beam 101 and a second braking beam 102. Both the first braking beam 101 and the second braking beam 102 are rod-shaped. The first braking beam 101 and the second braking beam 102 are spaced apart by a set distance. Both ends of the first braking beam 101 and the second braking beam 102 are provided with brake shoe supports, and brake shoes 103 are fixed inside the brake shoe supports.

[0028] By connecting the brake shoe support to the round shafts at both ends of the first brake beam 101 and the second brake beam 102, the brake shoe support can rotate around the brake shaft when the vehicle is braking, so that the brake shoe 103 can better fit the wheel tread and improve braking performance.

[0029] The air drive assembly 3 is located on the side of the first brake beam 101 away from the second brake beam 102. In this embodiment, the air drive assembly 3 is a brake cylinder, including a cylinder body 301 and a piston rod 302. The piston rod 302 can slide along the axial direction of the cylinder body 301. The brake cylinder is connected to an air compression device through a pipeline. Compressed air pushes the relative movement of the piston rod 302 and the cylinder body 301 of the brake cylinder, thereby providing braking force.

[0030] The transmission assembly 2 includes a first push rod 201, a second push rod 202, a first transmission component 203, and a second transmission component 204. The first push rod 201 and the second push rod 202 are arranged along the length of the first brake beam 101 and are spaced at a set distance. The first transmission component 203 and the second transmission component 204 are located at both ends of the air drive assembly 3.

[0031] The first transmission component 203 is hinged to the first brake beam 101 through the first hinge point 211, and the first transmission component 203 is hinged to the cylinder body 301 through the second hinge point 212. One end of the first push rod 201 is hinged to the second brake beam 102, and the other end is hinged to the first transmission component 203 through the third hinge point 213.

[0032] The first transmission component 203 is a triangular plate structure. The first hinge point 211, the second hinge point 212 and the third hinge point 213 are located at the three vertices of the first transmission component 203, respectively. The side between the second hinge point 212 and the third hinge point 213 is arc-shaped.

[0033] A first clearance hole is provided on the first brake beam 101, and the end of the first push rod 201 away from the second brake beam 102 passes through the first clearance hole and is hinged to the first transmission member 203.

[0034] The second transmission component 204 is hinged to the first brake beam 101 through the fourth hinge point 221, and the second transmission component 204 is hinged to the piston rod 302 through the fifth hinge point 222. One end of the second push rod 202 is hinged to the second brake beam 102, and the other end is hinged to the second transmission component 204 through the sixth hinge point 223.

[0035] The second transmission component 204 is a triangular plate structure. The fourth hinge point 221, the fifth hinge point 222 and the sixth hinge point 223 are located at three fixed points of the second transmission component 204, and the side between the fifth hinge point 222 and the sixth hinge point 223 is arc-shaped.

[0036] A second clearance hole is also provided on the first brake beam 101, and the end of the second push rod 202 away from the second brake beam 102 passes through the second clearance hole and is hinged to the second transmission member 204.

[0037] The first brake beam 101, the second brake beam 102, the first push rod 201, and the second push rod 202 are arranged in a parallelogram, which is beneficial for the transmission of braking performance.

[0038] By setting the first transmission component 203 and the second transmission component 204, the brake beam is subjected to more balanced force, preventing uneven wear of the brake shoe 103. At the same time, during vehicle braking and release, it can effectively prevent the brake beam from nodding, thereby improving the safety and reliability of the integrated braking device.

[0039] When the vehicle applies and releases the brakes, compressed air pushes the piston rod 302 and cylinder 301 of the brake cylinder to move relative to each other, thereby pushing and pulling the rotatable first transmission member 203 and second transmission member 204, causing the first brake beam 101 and the second brake beam 102 to move in opposite directions, which in turn drives the brake shoe 103 to brake and release.

[0040] The suspension assembly 4 includes a first suspension rod 401, a second suspension rod 402, a third suspension rod 403, and a fourth suspension rod 404. One end of the second suspension rod 402 and the fourth suspension rod 404 are respectively hinged to both ends of the first brake beam 101, and the other end is connected to the bogie crossbeam 40. One end of the first suspension rod 401 and the third suspension rod 403 are respectively hinged to both ends of the second brake beam 102, and the other end is connected to the bogie crossbeam 40.

[0041] The integrated braking device is fixed to the frame-type welded bogie via hangers, reducing the bogie's lower mass and improving the vehicle's dynamic performance. Furthermore, by suspending the integrated braking device on the bogie crossbeam 40, when the vehicle brakes are released, the integrated braking device is only subject to frictional resistance from the rotation of the pin shaft, and this frictional resistance is relatively small, which helps improve braking and release performance.

[0042] The first boom 401, the second boom 402, the third boom 403 and the fourth boom 404 are connected to the bogie crossbeam 40 by a connecting mechanism, which is one of the following: ball joint connecting mechanism 51, metal bushing connecting mechanism 52, steel-rubber-steel bushing connecting mechanism 53 and non-metallic bushing connecting mechanism 54.

[0043] like Figure 2 As shown, the ball joint connection mechanism 51 includes a ball joint 510, a fixing bolt 511, and a locking nut 512. The ball joint 510 is fixed to the top of the suspension assembly 4. The fixing bolt 511 passes through the bogie crossbeam 40 and the ball joint 510 in sequence and is locked by the locking nut 512, thereby realizing the connection between the suspension assembly 4 and the bogie crossbeam 40. The ball joint connection mechanism 51 allows for a certain angle change, has good flexibility and adaptability, can better transmit force and torque, and ensure the reliability of the connection.

[0044] like Figure 3 As shown, the metal bushing connection mechanism 52 includes a metal bushing 521, a first round pin 520, a first washer 522, and a first cotter pin 523. The metal bushing 521 is fixed to the top of the suspension assembly 4. The first round pin 520 passes through the bogie crossbeam 40 and the metal bushing 521 in sequence, and the first washer 522 is sleeved on the end of the first round pin 520. The first cotter pin 523 is used to lock the end of the first round pin 520 to prevent the first round pin 520 from loosening, thereby realizing the connection between the suspension assembly 4 and the bogie crossbeam 40. The metal bushing connection mechanism 52 has the advantages of high strength and high load-bearing capacity, is suitable for high load conditions, and has good wear resistance and long service life.

[0045] like Figure 4 As shown, the steel-rubber-steel bushing connection mechanism 53 includes a steel-rubber-steel bushing 531, a second round pin 530, a second washer 532, and a second cotter pin 533. The steel-rubber-steel bushing 531 is fixed to the top of the suspension assembly 4. The second round pin 530 passes through the bogie crossbeam 40 and the steel-rubber-steel bushing 531 in sequence, and the second washer 532 is sleeved on the end of the second round pin 530. The second cotter pin 533 is used to lock the end of the second round pin 530 to prevent the second round pin 530 from loosening, thereby realizing the connection between the suspension assembly 4 and the bogie crossbeam 40. The steel-rubber-steel bushing connection mechanism 53 combines the advantages of metal and rubber, has a good shock absorption effect and a high load-bearing capacity, can adapt to certain angle changes, and ensures the flexibility and reliability of the connection.

[0046] like Figure 5As shown, the non-metallic bushing connection mechanism 54 includes a non-metallic bushing 541, a third round pin 540, a third washer 542, and a third cotter pin 543. The non-metallic bushing 541 is fixed to the top of the suspension assembly 4. The third round pin 540 passes through the bogie crossbeam 40 and the non-metallic bushing 541 in sequence, and the third washer 542 is sleeved on the end of the third round pin 540. The third cotter pin 543 is used to lock the end of the third round pin 540 to prevent the third round pin 540 from loosening, thereby realizing the connection between the suspension assembly 4 and the bogie crossbeam 40. The non-metallic bushing connection mechanism 54 has a good shock absorption effect, which can effectively reduce vibration and noise during operation. It is also lightweight and does not affect the weight distribution of the overall structure.

[0047] By incorporating a suspension assembly, the first and second brake beams are connected to the bogie crossbeam, reducing the bogie's lower mass and improving the vehicle's dynamic performance. Furthermore, during brake release, the integrated braking system is only subject to frictional resistance from the rotation of the connecting parts, and this relatively low frictional resistance further enhances braking and release performance.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A suspended bogie integrated braking device, characterized in that, The system includes a braking assembly, a transmission assembly, an air drive assembly, and a suspension assembly. The braking assembly includes a first brake beam and a second brake beam spaced apart. The transmission assembly includes a first push rod, a second push rod, a first transmission member, and a second transmission member. One end of both the first and second push rods is hinged to the second brake beam. The first and second transmission members are located at both ends of the air drive assembly. The first transmission member is hinged to the other end of the air drive assembly, the first brake beam, and the first push rod, respectively. The second transmission member is hinged to the other end of the air drive assembly, the first brake beam, and the second push rod, respectively. The first and second brake beams are connected to the bogie crossbeam via the suspension assembly.

2. The suspended bogie integrated braking device as described in claim 1, characterized in that, Both ends of the first and second brake beams are equipped with brake shoe supports, and brake shoes are fixed inside the brake shoe supports.

3. The suspended bogie integrated braking device as described in claim 1, characterized in that, The air-driven assembly is located on the side of the first brake beam away from the second brake beam.

4. The suspended bogie integrated braking device as described in claim 1, characterized in that, The air-driven assembly is a brake cylinder, including a cylinder body and a piston rod, wherein the piston rod can slide along the axis of the cylinder body.

5. The suspended bogie integrated braking device as described in claim 1, characterized in that, The first push rod and the second push rod are arranged along the length of the first brake beam and are spaced at a set distance.

6. The suspended bogie integrated braking device as described in claim 4, characterized in that, The first transmission component is hinged to the first brake beam via a first hinge point, and the first transmission component is hinged to the cylinder via a second hinge point. One end of the first push rod is hinged to the second brake beam, and the other end is hinged to the first transmission component via a third hinge point.

7. The suspended bogie integrated braking device as described in claim 1, characterized in that, The first brake beam has a first clearance hole, and the end of the first push rod away from the second brake beam passes through the first clearance hole and is hinged to the first transmission component.

8. The suspended bogie integrated braking device as described in claim 4, characterized in that, The second transmission component is hinged to the first brake beam via the fourth hinge point, and the second transmission component is hinged to the piston rod via the fifth hinge point. One end of the second push rod is hinged to the second brake beam, and the other end is hinged to the second transmission component via the sixth hinge point.

9. The suspended bogie integrated braking device as described in claim 1, characterized in that, The first brake beam is also provided with a second clearance hole, and the end of the second push rod away from the second brake beam passes through the second clearance hole and is hinged to the second transmission component.

10. The suspended bogie integrated braking device as described in claim 1, characterized in that, The suspension assembly includes a first suspension rod, a second suspension rod, a third suspension rod, and a fourth suspension rod. One end of the second suspension rod and the fourth suspension rod are respectively hinged to both ends of the first brake beam, and the other end is connected to the bogie crossbeam. One end of the first suspension rod and the third suspension rod are respectively hinged to both ends of the second brake beam, and the other end is connected to the bogie crossbeam.

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