High-speed bogie frame

Abstract

The utility model discloses a high -speed rail bogie frame relates to high -speed rail bogie technical field, including frame main part and protection reinforcing mechanism, the outer surface fixedly connected with protection reinforcing mechanism of frame main part, and protection reinforcing mechanism includes the zinc -aluminum alloy coating of fixed connection in the frame main part outer surface position, the welding of frame main part is fixedly connected with sealing rubber strip, and one side fixedly connected with torsional strengthening beam of frame main part, the corrosion -resistant bushing of screw hole department fixed connection of frame main part, zinc -aluminum alloy coating adopts thermal spraying process forming. Compared with the existing ordinary high -speed rail bogie frame of using, this high -speed rail bogie frame forms double -layer protection closed loop and thread protection system, prolongs component life, maintenance cycle and frame fatigue life, and realizes shock -absorbing effect automatic regulation, restrains resonance, reduces the fatigue damage of impact to frame, promotes the life of weld, and the long -term stable bearing of frame is strengthened together with high -speed smooth operation.

Description

Technical Field

[0001] This utility model relates to the field of high-speed rail bogie technology, specifically a high-speed rail bogie frame. Background Technology

[0002] The high-speed rail bogie frame is the "core load-bearing skeleton" of the high-speed rail steering system. As a key structural component connecting the car body and wheelsets, it undertakes core functions such as car body weight transmission, power and braking load transmission, and installation and positioning of various components. It directly affects the safety, stability and comfort of high-speed rail operation and is one of the core components to ensure high-speed train operation. After the frame is produced, it needs to undergo non-destructive testing to check for welding defects and verify its performance through static strength and dynamic stiffness tests to ensure that there is no risk of deformation or fracture during high-speed operation, and to provide structural support for the safe operation of high-speed rail. The existing high-speed rail bogie frames have certain defects.

[0003] For example, application number CN201922321843.2 describes a welded bogie frame for railway express freight cars. It consists of two sets of box girder side beams welded together with two tubular crossbeams passing through the side beams. All components arranged on the frame are fixed by welding. A reinforcing ring, welded to the crossbeam, is installed on the inner side of the side beam's inner web. The reinforcing ring is fully welded to the inner side of the side beam's inner web, and then, together with the crossbeam web, has mounting holes and is machined with welding bevels to form an integral structure with the crossbeam web. This utility model completely eliminates rhomboid deformation and is lightweight, ensuring good lateral running stability of the vehicle. It allows for the use of disc brakes and various mounting brackets. The reinforcing ring structure enhances the strength of the welded positions of the frame, optimizing the stress on the frame. The central suspension bearing platform is moved inward and downward, increasing the installation height, achieving a suspension setup with greater deflection and lower stiffness, reducing the lateral distance of the bogie's central suspension, shortening the bolster's load-bearing span, and improving load conditions. However, the protection of the high-speed rail bogie frame is limited, the coating is prone to cracking, the rubber strips are prone to aging, the threads are prone to wear and water seepage, the shock absorption effect is fixed, the impact load is prone to frame fatigue, and the spring resonance damages the weld.

[0004] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings and proposed a high-speed rail bogie frame. Utility Model Content

[0005] The purpose of this utility model is to provide a high-speed rail bogie frame to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-speed railway bogie frame, comprising a frame body and a protective reinforcement mechanism, wherein the protective reinforcement mechanism is fixedly connected to the outer surface of the frame body, and the protective reinforcement mechanism includes a zinc-aluminum alloy coating fixedly connected to the outer surface of the frame body, a sealing rubber strip is fixedly connected to the welded joint of the frame body, and an anti-torsion reinforcement beam is fixedly connected to one side of the frame body, and an anti-corrosion bushing is fixedly connected to the threaded hole of the frame body.

[0007] Preferably, the main body of the frame is provided with wheelsets inside, and a multi-directional buffer and shock absorption mechanism is fixedly connected to the bottom of the main body of the frame.

[0008] Preferably, the multi-directional buffer and shock absorption mechanism includes a conical shock absorption spring fixedly connected to the bottom of the main frame, and a damping block is sleeved inside the conical shock absorption spring. The bottom of the damping block is fixedly connected to a shock absorption adjustment seat, and the bottom of the shock absorption adjustment seat is fixedly connected to a fixing seat.

[0009] Preferably, a braking component is provided on one side of the wheelset, and a triangular support frame is fixedly connected to the bottom of the main frame.

[0010] Preferably, a support plate is fixedly connected to the bottom of the triangular support frame, and an auxiliary shock-absorbing rod is fixedly connected to the top of the support plate.

[0011] Preferably, a fixing plate is fixedly connected to the top of the main frame, and a positioning block is fixedly connected to the top of the fixing plate.

[0012] Preferably, a buffer pad is fixedly connected to the top of the positioning block, and a suspension structure is fixedly connected to the top of the fixing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the protective reinforcement mechanism 2, breaks through the limitations of single protection, provides structural safety redundancy and operational performance upgrade for the high-speed rail bogie frame, and strengthens the core advantage of long-term stable load bearing. The porous structure formed after thermal spraying of the coating can complement the elastic deformation of the rubber strip. When the frame is subjected to vibration, causing slight deformation of the weld, the rubber strip can adaptively fill the gap, preventing the coating from losing its protective effect due to stress cracking. The anti-corrosion bushing and the sealing rubber strip form a thread protection and water vapor isolation system. When the bolts are installed, the bushing reduces thread wear, while the rubber strip seals the gap between the bolt and the frame, preventing water vapor from seeping in along the threaded holes. The two work together to extend the maintenance cycle of the threaded connection parts and improve the overall fatigue life of the frame. Through the dual effects of protection and structural reinforcement, it provides a reliable guarantee for the long-term safe operation of high-speed rail.

[0015] 2. This utility model, through the setting of the multi-directional buffer and shock absorption mechanism 4, forms a linkage between the conical shock absorption spring and the damping block, which has a gradual change in stiffness and adaptive damping. The conical structure of the spring steel material makes the stiffness increase with the amount of compression. Combined with the nonlinear damping characteristics of the nitrile rubber damping block, the shock absorption effect can be automatically adjusted according to the impact intensity. When encountering small amplitude vibration, the damping block deforms slightly to assist the spring in buffering. When encountering large impacts such as track joints, the spring stiffness increases sharply to limit the deformation. The damping block increases the damping force simultaneously to suppress bouncing, avoiding the transmission of impact load to the main frame and causing fatigue damage. The synergistic resonance of the damping block and the spring reduces the impact of high-frequency spring vibration on the welding points of the frame and improves the fatigue life of the weld. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the protective reinforcement mechanism 2 of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the multi-directional buffer and shock absorption mechanism 4 of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall side view structure of this utility model.

[0020] In the diagram: 1. Main frame; 2. Protective reinforcement mechanism; 201. Zinc-aluminum alloy coating; 202. Sealing rubber strip; 203. Torsional reinforcement beam; 204. Anti-corrosion bushing; 3. Wheelset; 4. Multi-directional buffer and shock absorption mechanism; 401. Conical shock absorption spring; 402. Damping block; 403. Shock absorption adjustment bracket; 404. Fixing seat; 5. Braking assembly; 6. Triangular support frame; 7. Support plate; 8. Auxiliary shock absorption rod; 9. Fixing plate; 10. Positioning block; 11. Buffer pad; 12. Suspension structure. Detailed Implementation

[0021] 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.

[0022] like Figures 1-2As shown, a high-speed railway bogie frame includes a frame body 1 and a protective reinforcement mechanism 2. The protective reinforcement mechanism 2 is fixedly connected to the outer surface of the frame body 1, and the protective reinforcement mechanism 2 includes a zinc-aluminum alloy coating 201 fixedly connected to the outer surface of the frame body 1. A sealing rubber strip 202 is fixedly connected to the welded joints of the frame body 1, and an anti-torsional reinforcing beam 203 is fixedly connected to one side of the frame body 1. An anti-corrosion bushing 204 is fixedly connected to the threaded holes of the frame body 1. The zinc-aluminum alloy coating 201 is formed by thermal spraying and covers the frame body 1. All exposed areas on the outer surface can resist salt spray and rainwater erosion, improving corrosion resistance. The sealing rubber strip 202 at the weld of the main frame 1 is made of EPDM material, which is tightly bonded to the weld with structural adhesive, sealing the weld gap to prevent water vapor from seeping in, and buffering the vibration stress of the part. The torsional reinforcing beam 203 is made of high-strength steel, which improves the torsional rigidity of the main frame 1. The anti-corrosion bushing 204 at the threaded hole is made of PTFE material with an embedded stainless steel skeleton to avoid wear of the threaded hole during bolt installation, while isolating moisture from contact with metal and extending the life of the threaded connection.

[0023] like Figure 3 As shown, the main frame 1 has wheelsets 3 inside, and a multi-directional shock absorption mechanism 4 is fixedly connected to the bottom of the main frame 1. The multi-directional shock absorption mechanism 4 includes a conical shock-absorbing spring 401 fixedly connected to the bottom of the main frame 1, and a damping block 402 is sleeved inside the conical shock-absorbing spring 401. A shock-absorbing adjustment seat 403 is fixedly connected to the bottom of the damping block 402, and a fixed seat 404 is fixedly connected to the bottom of the shock-absorbing adjustment seat 403. The wheelsets 3 inside the main frame 1 are connected via... The axle box is elastically connected to the main frame 1, ensuring that the wheelset 3 rotates flexibly without lateral deviation. The conical damping spring 401 of the multi-directional buffer damping mechanism 4 is made of spring steel, which can absorb vertical impact. The internal damping block 402 is made of nitrile rubber, which works together to suppress the resonance of the conical damping spring 401. The damping adjustment bracket 403 is equipped with adjustment bolts to adapt to different track conditions. The fixed seat 404 is made of carbon steel forging, which ensures that the multi-directional buffer damping mechanism 4 transmits force stably and improves the smoothness of the main frame 1.

[0024] Furthermore, a braking assembly 5 is provided on one side of the wheelset 3, and a triangular support frame 6 is fixedly connected to the bottom of the main frame 1. A support plate 7 is fixedly connected to the bottom of the triangular support frame 6, and an auxiliary shock absorber rod 8 is fixedly connected to the top of the support plate 7. The braking assembly 5 is a disc brake structure, and the brake pads are made of wear-resistant ceramic composite material. The triangular support frame 6 is welded from high-strength steel and forms a triangular structure with the main frame 1. The auxiliary shock absorber rod 8 on the top of the support plate 7 can absorb lateral impacts. The three components work together to improve the braking and support stability of the frame.

[0025] Furthermore, a fixing plate 9 is fixedly connected to the top of the main frame 1, and a positioning block 10 is fixedly connected to the top of the fixing plate 9. A buffer pad 11 is fixedly connected to the top of the positioning block 10, and a suspension structure 12 is fixedly connected to the top of the fixing plate 9. The fixing plate 9 is made of weathering steel, the positioning block 10 is made of forged steel, the top buffer pad 11 is made of polyurethane, and the suspension structure 12 is an air spring type. The bottom is precisely positioned by the positioning block 10 to ensure the vertical vibration transmission rate.

[0026] Working principle: When using this high-speed rail bogie frame, firstly, the zinc-aluminum alloy coating 201 of the protective reinforcement mechanism 2 covers the outer surface of the frame body 1, the sealing rubber strip 202 seals the weld gaps, the anti-corrosion bushing 204 protects the threaded holes, and the anti-torsion reinforcement beam 203 enhances the overall rigidity of the frame, completing the protection and structural preparation before operation. The wheelset 3 is connected to the frame body 1 through the axle box. During operation, the conical damping spring 401 of the multi-directional buffer damping mechanism 4, together with the damping block 402, absorbs vertical impacts. The damping adjustment bracket 403 finely adjusts the height to adapt to the track conditions, and the fixed seat 4... 04. For stable force transmission, the triangular support frame 6 and support plate 7 strengthen the bottom support, while the auxiliary shock absorber rod 8 weakens lateral vibration. During braking, the ceramic brake pads of the braking assembly 5 engage with the brake discs of the wheelset 3 to achieve rapid deceleration. Then, the suspension structure 12, in conjunction with the buffer pad 11, further reduces the vibration transmission rate. The protective reinforcement mechanism 2 continuously resists external corrosion and structural stress, and the torsional reinforcement beam 203 maintains the torsional performance of the frame. Finally, all components work together to ensure that the main frame 1 is stable in bearing load, reliable in braking, and effectively damped during high-speed operation, thus guaranteeing the safe and stable operation of the high-speed rail. This is the working principle of this high-speed rail bogie frame.

Claims

1. A high-speed railway bogie frame, comprising a frame body (1) and a protective reinforcement mechanism (2), characterized in that, The outer surface of the main frame (1) is fixedly connected to a protective reinforcement mechanism (2), and the protective reinforcement mechanism (2) includes a zinc-aluminum alloy coating (201) fixedly connected to the outer surface of the main frame (1). A sealing rubber strip (202) is fixedly connected to the weld of the main frame (1), and an anti-torsion reinforcement beam (203) is fixedly connected to one side of the main frame (1). An anti-corrosion bushing (204) is fixedly connected to the threaded hole of the main frame (1).

2. The high-speed rail bogie frame according to claim 1, characterized in that, The frame body (1) is equipped with wheelsets (3) inside, and a multi-directional buffer and shock absorption mechanism (4) is fixedly connected to the bottom of the frame body (1).

3. A high-speed rail bogie frame according to claim 2, characterized in that, The multi-directional buffer and shock absorption mechanism (4) includes a conical shock absorption spring (401) fixedly connected to the bottom of the frame body (1), and a damping block (402) is sleeved inside the conical shock absorption spring (401). A shock absorption adjustment seat (403) is fixedly connected to the bottom of the damping block (402), and a fixed seat (404) is fixedly connected to the bottom of the shock absorption adjustment seat (403).

4. A high-speed rail bogie frame according to claim 2, characterized in that, A braking assembly (5) is provided on one side of the wheelset (3), and a triangular support frame (6) is fixedly connected to the bottom of the main frame (1).

5. A high-speed rail bogie frame according to claim 4, characterized in that, The bottom of the triangular support frame (6) is fixedly connected to a support plate (7), and the top of the support plate (7) is fixedly connected to an auxiliary shock absorber rod (8).

6. A high-speed rail bogie frame according to claim 1, characterized in that, The top of the main frame (1) is fixedly connected to a fixing plate (9), and the top of the fixing plate (9) is fixedly connected to a positioning block (10).

7. A high-speed rail bogie frame according to claim 6, characterized in that, The top of the positioning block (10) is fixedly connected to a buffer pad (11), and the top of the fixing plate (9) is fixedly connected to a suspension structure (12).

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