A railway truck assembly

Abstract

The utility model discloses a train bogie assembly relates to train accessory technical field, including bogie main part, and the inside four corners of bogie main part all are fixed with fixed link, and the outside sleeve of fixed link is equipped with support cover, and the bottom of the outside wall of support cover is fixed with support arm, and the bottom of support arm is equipped with the connecting block through the pivot swing, and the bottom of connecting block is fixed with support frame. The utility model discloses through setting up support frame, movable frame, brake cylinder and brake pad, and brake cylinder can drive brake pad movement through movable frame, and through setting up locating plate and brake pad in the inside of support frame, after brake pad clamping in the both sides of walking wheel in the process of braking, brake pad drives movable frame and support frame to rotate under the inertial action of walking wheel, makes the brake pad of support frame inside and the outer surface of walking wheel adhere, and brake pad can realize the auxiliary brake of walking wheel, to reduce the load of brake pad.

Description

Technical Field

[0001] This utility model relates to the field of train parts technology, and in particular to a train bogie assembly. Background Technology

[0002] The bogie is the running gear of a rail vehicle, much like a person's legs, and is one of the most crucial components of a rail vehicle. The various parameters of the bogie directly determine the vehicle's stability and ride comfort.

[0003] In existing technology, such as a bogie with publication number CN205819216U, a frame and a bolster are included. The frame includes two parallel side beams and a crossbeam connected to the middle of the side beams. A first suspension is provided between the two ends of the side beams and the axle boxes, a second suspension is provided below the bolster and between the bolster and the crossbeam, and a third suspension is provided above the bolster and connected to the car body. This utility model's bogie, by adding a bolster, increases the number of suspension levels between the bolster and the crossbeam, achieving functional separation. The third suspension above the bolster is only used for lateral displacement, while the second suspension below the bolster is only used for rotation. This further increases the displacement and rotation angle between the car body and the bogie when the vehicle passes through curves, improving the vehicle's curve-passing ability. The combination of the three suspension levels provides good vibration isolation and noise reduction, effectively attenuating wheel-rail vibration and improving ride comfort.

[0004] Existing train bogies suffer from insufficient braking performance in practical applications. Existing train bogies use disc brakes for braking. Due to the large weight of the train, the braking structure in the bogie is under a large load during braking, which requires a long braking distance and is not conducive to train operation.

[0005] Therefore, it is necessary to invent a train bogie assembly to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a train bogie assembly to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a train bogie assembly, comprising a bogie body, with rotating shafts movably mounted at both ends of the lower surface of the bogie body via bearings, and traveling wheels fixedly mounted at both ends of the two rotating shafts; fixing rods fixedly mounted at the four inner corners of the bogie body, with the four fixing rods respectively located above the four traveling wheels; a support sleeve sleeved on the outer side of the fixing rods; a support arm fixedly mounted at the bottom end of the outer wall of the support sleeve; a connecting block movably mounted at the bottom end of the support arm via a pin; a support frame fixedly mounted at the bottom end of the connecting block; and two sides of the support frame movably mounted via pins. The movable frame has a brake cylinder between its inner ends, with the two ends of the brake cylinder movably connected to one end of each of the two movable frames via pins. Brake pads are movably mounted on the other inner ends of both movable frames via pins, and the two brake pads are respectively located on both sides of the traveling wheel. An arc-shaped positioning plate is fixedly mounted in the middle of the inner side of the support frame, with brake pads on the inner side of the positioning plate and located on the outer side of the traveling wheel. Connecting arms are movably mounted on the top ends of both brake pads via pins. An extension arm is fixedly mounted on the top end of the outer wall of the support sleeve, and the top end of the connecting arm is movably connected to one end of the extension arm via a pin.

[0008] Preferably, a positioning seat is fixedly provided at one end of the fixing rod, and positioning pins are fixedly provided at both ends of the inner sidewall of the positioning seat. Insert blocks are provided on both sides of the support sleeve. The insert blocks are located between the support sleeve and the positioning pins, and the bottom end of the outer sidewall of the insert blocks is provided with an inclined structure.

[0009] Preferably, the top ends of the two inserts are provided with a movable seat, and an auxiliary hydraulic cylinder is provided between the movable seat and the support sleeve.

[0010] Preferably, a fixing block is fixedly provided at one end of the outer wall of the support sleeve, and the fixing block is located between two positioning pins.

[0011] Preferably, both ends of the inner sidewall of the brake pad are provided with arc-shaped protrusions.

[0012] Preferably, a power motor is fixedly installed at both ends of the bogie body, and a gearbox is provided between the output shaft and the rotating shaft of the power motor.

[0013] Preferably, both ends of the rotating shaft are movably provided with a primary suspension via bearings, and the top of the primary suspension is fixedly provided on the lower surface of the bogie body. Two secondary suspensions are fixedly provided in the middle of the upper surface of the bogie body, and the two secondary suspensions are arranged symmetrically. A transverse suspension is fixedly provided in the middle of the bogie body.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model includes a support frame, a movable frame, a brake cylinder, and brake pads. The brake cylinder can drive the brake pads to move through the movable frame, causing the brake pads to clamp onto both sides of the traveling wheel to complete the braking action. By setting a positioning plate and brake pads on the inner side of the support frame, during the braking process, after the brake pads are clamped onto both sides of the traveling wheel, the brake pads drive the movable frame and support frame to rotate under the inertia of the traveling wheel, so that the brake pads on the inner side of the support frame are in contact with the outer surface of the traveling wheel. The brake pads can provide auxiliary braking to the traveling wheel to reduce the load on the brake pads. Furthermore, the cooperation between the brake pads and brake pads can improve the braking performance of the device, thereby shortening the braking distance of the train and facilitating the operation of the train.

[0016] 2. This utility model features a connecting arm at the top of the brake pad. During clamping, the brake pad drives the connecting arm to rotate, causing the brake pad to move upward a short distance. During this process, the brake pad, through a movable frame, drives the support frame and brake pad to move, ensuring the brake pad can contact the traveling wheel. This ensures rapid linkage between the brake wheel and brake pad when the device brakes. During release, the connecting arm rotates to reset and pushes the brake pad downward a short distance. During this process, the brake pad, through the movable frame, drives the support frame and brake pad to reset, ensuring the brake pad separates from the traveling wheel. This ensures the stability of the brake pad and brake pad during normal bogie operation, thereby guaranteeing the stability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the support frame structure of this utility model.

[0019] Figure 3 This is a side view of the support frame structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the positioning seat structure of this utility model.

[0021] In the diagram: 1. Bogie body; 2. Shaft; 3. Traveling wheel; 4. Fixed rod; 5. Support sleeve; 6. Support arm; 7. Support frame; 8. Connecting block; 9. Movable frame; 10. Brake cylinder; 11. Brake pad; 12. Positioning plate; 13. Brake pad; 14. Connecting arm; 15. Extension arm; 16. Positioning seat; 17. Positioning pin; 18. Insert block; 19. Movable seat; 20. Auxiliary cylinder; 21. Fixed block; 22. Power motor; 23. Gearbox; 24. Primary suspension; 25. Secondary suspension; 26. Lateral suspension. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 1-4 The diagram shows a train bogie assembly, including a bogie body 1. Two rotating shafts 2 are movably mounted on both ends of the lower surface of the bogie body 1 via bearings. Two traveling wheels 3 are fixed to both ends of each rotating shaft 2. Fixed rods 4 are fixed at the four inner corners of the bogie body 1, with each fixed rod 4 positioned above one of the four traveling wheels 3. Support sleeves 5 are sleeved on the outer sides of the fixed rods 4. Support arms 6 are fixed to the bottom end of the outer wall of the support sleeves 5. A connecting block 8 is movably mounted on the bottom end of the support arm 6 via a pin. A support frame 7 is fixed to the bottom end of the connecting block 8. Movable frames 9 are provided on both sides via pins. A brake cylinder 10 is provided between the inner ends of the two movable frames 9, and the two ends of the brake cylinder 10 are respectively movably connected to one end of the two movable frames 9 via pins. Brake pads 11 are provided on the other inner ends of the two movable frames 9 via pins. The two brake pads 11 are respectively provided on both sides of the traveling wheel 3. It should be noted that the traveling wheel 3 adopts the corresponding structure in the prior art. Both sides of the traveling wheel 3 are provided with brake discs adapted to the brake pads 11. The brake pads 11 complete the braking by squeezing and rubbing the brake discs.

[0024] An arc-shaped positioning plate 12 is fixedly installed in the middle of the inner side of the support frame 7. A brake pad 13 is installed on the inner side of the positioning plate 12 and is located on the outer side of the traveling wheel 3. Both ends of the inner sidewall of the brake pad 13 are provided with arc-shaped protrusions. The design of the arc-shaped protrusions makes it easier for the end of the brake pad 13 to contact the traveling wheel 3. It should be noted that in order to avoid wear on the surface of the traveling wheel 3, the brake pad 13 is made of rubber with high hardness. The brake pad 13 and the positioning plate 12 can be connected by bolts to facilitate the regular replacement and maintenance of the brake pad 13.

[0025] The top of each of the two brake pads 11 is movably provided with a connecting arm 14 via a pin, and the top of the outer wall of the support sleeve 5 is fixedly provided with an extension arm 15. The top of the connecting arm 14 is movably connected to one end of the extension arm 15 via a pin. The connecting arm 14 and the extension arm 15 cooperate to realize the linkage between the brake pad 11 and the brake pad 13.

[0026] A positioning seat 16 is fixedly provided at one end of the fixed rod 4. Positioning pins 17 are fixedly provided at both ends of the inner side wall of the positioning seat 16. Insertion blocks 18 are provided on both sides of the support sleeve 5. The insertion blocks 18 are located between the support sleeve 5 and the positioning pins 17. The bottom end of the outer side wall of the insertion block 18 is designed with an inclined structure. The inclined structure design facilitates the insertion of the insertion block 18 into the inner side of the positioning pin 17. The top of the two insertion blocks 18 is provided with a movable seat 19. An auxiliary oil cylinder 20 is provided between the movable seat 19 and the support sleeve 5. The auxiliary oil cylinder 20 is used to drive the insertion blocks 18 to move.

[0027] A fixing block 21 is fixedly provided at one end of the outer wall of the support sleeve 5. The fixing block 21 is located between two positioning pins 17 and is used to limit the rotation range of the support sleeve 5.

[0028] A power motor 22 is fixedly installed at both ends of the bogie body 1, and a gearbox 23 is provided between the output shaft of the power motor 22 and the rotating shaft 2.

[0029] Both ends of the rotating shaft 2 are equipped with a primary suspension 24 via bearings, and the top of the primary suspension 24 is fixed to the lower surface of the bogie body 1. Two secondary suspensions 25 are fixed in the middle of the upper surface of the bogie body 1, and the two secondary suspensions 25 are symmetrically arranged. A transverse suspension 26 is fixed in the middle of the bogie body 1.

[0030] Working principle of this utility model:

[0031] When this device is in use, the bogie body 1 is installed under the train car via the secondary suspension 25 and the lateral suspension 26. The traveling wheel 3 at the bottom of the bogie body 1 is placed above the rail. The power motor 22 drives the rotating shaft 2 to rotate through the gearbox 23. The rotating shaft 2 drives the traveling wheel 3 to rotate, so that the traveling wheel 3 rolls along the rail, thereby realizing the movement of the bogie body 1 and the train car.

[0032] When braking, the brake cylinder 10 drives one end of the movable frame 9 to move, causing one end of the two movable frames 9 to move away from each other. The movable frame 9 rotates around the pin connecting the middle part to the support frame 7, causing the other ends of the two movable frames 9 to drive the two brake pads 11 to move respectively. At this time, the two brake pads 11 simultaneously come into contact with the outer side of the traveling wheel 3. The brake pads 11 can brake the traveling wheel 3 through friction. At the same time, the brake pads 11 drive the connecting arm 14 to move during the clamping process. The top of the connecting arm 14 is limited by the extension arm 15, causing the top of the connecting arm 14 to rotate around the pin at the connection with the extension arm 15. At this time, the connecting arm 14 drives the brake pads 11 to move upward a short distance. The brake pads 11 drive the support frame 7 to move upward a short distance through the movable frame 9. At this time, the support frame 7 rotates around the connecting block 8. The brake pads 13 on the inner side of the support frame 7 come into contact with the outer side wall of the traveling wheel 3. At this time, the brake pads 13 brake the traveling wheel 3 through friction. The brake pads 13 and the brake pads 11 cooperate to improve the braking effect of the device.

[0033] After the braking action is completed, the brake cylinder 10 resets. At this time, the movable frame 9 drives the brake pad 11 to move, causing the brake pad 11 to move away from the travel wheel 3. During this process, the brake pad 11 drives the connecting arm 14 to move, causing the connecting arm 14 to rotate and reset. During the rotation and reset process, the connecting arm 14 pushes the brake pad 11 downward. The brake pad 11 drives the support frame 7 to rotate through the movable frame 9, causing the brake pad 13 to separate from the travel wheel 3. This achieves the reset of the brake pad 11 and the brake pad 13. During the brake reset process, the auxiliary cylinder 20 can drive the insert block 18 to move upward through the movable seat 19, causing the insert block 18 to slide out from between the positioning pin 17 and the support sleeve 5. At this time, a gap is generated between the positioning pin 17 and the support sleeve 5. At this time, the limit between the support sleeve 5 and the fixed rod 4 is released, and the support sleeve 5 can rotate around the fixed rod 4. Correspondingly, the support frame 7 connected to the support sleeve 5 can rotate slightly around the fixed rod 4, thereby increasing the rotation space of the support frame 7 so as to facilitate the separation of the brake pad 13 and the traveling wheel 3. After the brake cylinder 10 is reset, the auxiliary cylinder 20 drives the insert block 18 to move downward and reset through the movable seat 19. The insert block 18 is inserted between the positioning pin 17 and the support sleeve 5 to realize the limit of the support sleeve 5, thereby ensuring the stability of the brake pad 11 and the brake pad 13 during the driving process of the bogie body 1.

[0034] It should be noted that this embodiment only provides the relevant structure of the brake assembly in the train bogie. The power motor 22, gearbox 23, primary suspension 24, secondary suspension 25 and lateral suspension 26 involved in this embodiment all adopt the corresponding structures and installation methods in the prior art. They are not restricted without affecting the normal implementation of this embodiment.

[0035] It should be further explained that both the brake cylinder 10 and the auxiliary cylinder 20 in this embodiment are equipped with a hydraulic power system and a controller. The above structures all adopt the corresponding structures in the prior art. Furthermore, the motion logic of the auxiliary cylinder 20 releasing the limit of the support sleeve 5 can be used not only when the brake is reset, but also when replacing the brake pad 13. After the limit of the support sleeve 5 is released, the support frame 7 has a larger rotation space, so the brake pad 13 can be replaced more quickly. At the same time, during the braking process, the auxiliary cylinder 20 can also release the limit of the support sleeve 5, so that the support frame 7 has a larger rotation space, allowing the brake pad 13 to obtain a larger contact surface with the traveling wheel 3. Moreover, when the brake pad 13 is severely worn, the rotation range of the support frame 7 and the brake pad 13 can be increased by releasing the limit of the support sleeve 5 by the auxiliary cylinder 20, thereby ensuring the braking effect of the brake pad 13.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A train bogie assembly, comprising a bogie body (1), characterized in that: The bogie body (1) has two rotating shafts (2) movably mounted on both ends of its lower surface via bearings. Two wheels (3) are fixedly mounted on both ends of the two rotating shafts (2). Fixed rods (4) are fixedly mounted at the four inner corners of the bogie body (1), and the four fixed rods (4) are respectively located above the four wheels (3). A support sleeve (5) is sleeved on the outer side of the fixed rod (4). A support arm (6) is fixedly mounted at the bottom of the outer wall of the support sleeve (5). A connecting block (8) is movably mounted at the bottom of the support arm (6) via a pin. A support frame (7) is fixedly mounted at the bottom of the connecting block (8). Movable frames (9) are movably mounted on both sides of the support frame (7) via pins. A brake cylinder (10) is located between the inner ends of the two movable frames (9). The brake cylinder (10) is connected to one end of two movable frames (9) by pins. The other end of the inner side of the two movable frames (9) is provided with brake pads (11) by pins. The two brake pads (11) are respectively located on both sides of the walking wheel (3). The inner middle of the support frame (7) is fixed with an arc-shaped positioning plate (12). The inner side of the positioning plate (12) is provided with brake pads (13), and the brake pads (13) are located on the outer side of the walking wheel (3). The top of the two brake pads (11) is provided with connecting arms (14) by pins. The top of the outer wall of the support sleeve (5) is fixed with an extension arm (15). The top of the connecting arm (14) is connected to one end of the extension arm (15) by pins.

2. A train bogie assembly according to claim 1, characterized in that: One end of the fixed rod (4) is fixedly provided with a positioning seat (16), and both ends of the inner side wall of the positioning seat (16) are fixedly provided with positioning pins (17). Both sides of the support sleeve (5) are provided with inserts (18), and the inserts (18) are located between the support sleeve (5) and the positioning pins (17), and the bottom end of the outer side wall of the inserts (18) is provided with an inclined structure.

3. A train bogie assembly according to claim 2, characterized in that: The top ends of the two inserts (18) are provided with a movable seat (19), and an auxiliary oil cylinder (20) is provided between the movable seat (19) and the support sleeve (5).

4. A train bogie assembly according to claim 3, characterized in that: A fixing block (21) is fixedly provided at one end of the outer wall of the support sleeve (5), and the fixing block (21) is located between two positioning pins (17).

5. A train bogie assembly according to claim 1, characterized in that: Both ends of the inner wall of the brake pad (13) are provided with arc-shaped protrusions.

6. A train bogie assembly according to claim 1, characterized in that: Both ends of the bogie body (1) are fixedly equipped with a power motor (22), and a gearbox (23) is provided between the output shaft of the power motor (22) and the rotating shaft (2).

7. A train bogie assembly according to claim 1, characterized in that: Both ends of the rotating shaft (2) are provided with a primary suspension (24) through bearings, and the top of the primary suspension (24) is fixed on the lower surface of the bogie body (1). Two secondary suspensions (25) are fixed in the middle of the upper surface of the bogie body (1), and the two secondary suspensions (25) are symmetrically arranged. A transverse suspension (26) is fixed in the middle of the bogie body (1).

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