Damping mechanism of railroad tractor

By designing the inner and outer shock absorption structures, the fixed plate, rectangular frame, shock absorption spring and shock absorption guide shaft are used to solve the shock absorption problem of electric drive axles, and the stable shock absorption effect of heavy-duty short-distance traction is achieved.

CN223279107UActive Publication Date: 2025-08-29SHANDONG DONGTIE POWER TECH CO LTD
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Patent Information

Application Number
CN202422864174.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-08-29
Estimated Expiration
2034-11-25

AI Technical Summary

Technical Problem

The shock absorption mechanism of existing track tractors is difficult to meet the shock absorption needs of electric drive axles, especially in heavy-duty short-distance traction.

Method used

A track tractor shock absorbing mechanism is designed, including the inner and outer shock absorbing structures, which are composed of a fixed plate, a rectangular frame, a shock absorbing spring and a shock absorbing guide shaft. It is fixed on the longitudinal beam of the track tractor chassis through welding and bolt connections, and stabilize shock absorbing is achieved by using multiple sets of shock absorbing springs and reinforcement ribs.

Benefits of technology

It achieves shock absorption effect suitable for electric drive axles, especially in heavy-duty short-distance traction, and provides stable shock absorption performance. It has a simple structure and is suitable for rail driving environments without lateral impact.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a damping mechanism of a rail tractor, and belongs to the field of rail traffic facilities. According to the technical scheme, the shock absorber comprises an outer shock absorber body and an inner shock absorber body. The inner side shock absorber and the outer side shock absorber each comprise a fixing plate, a rectangular frame, a shock absorbing spring and a shock absorbing guide shaft. The fixing plate is arranged on one side of the rectangular frame and is a rectangular plate, and the periphery of the fixing plate is connected with the rectangular frame in a welded mode. The fixing plate is attached to the side face of the rail tractor chassis longitudinal beam, fixing holes are formed in the fixing plate and the rail tractor chassis longitudinal beam respectively, the fixing shaft penetrates through the fixing holes and fixes the fixing plate and the rail tractor chassis longitudinal beam, the damping spring is arranged on the lower portion of the rectangular frame, and the damping guide shaft is sleeved on the damping spring. A damping plate is arranged below the damping springs. The damping mechanism of the device is matched with the electrically-driven axle, is suitable for heavy-load short-distance traction and realizes damping of the traction locomotive.
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Description

Technical Field

[0001] The utility model relates to a shock absorbing mechanism of a rail tractor, belonging to the field of rail transportation facilities. Background Art

[0002] A rail locomotive is a power plant used to pull vehicles on tracks. The electrification of rail transit has become a common trend. Replacing conventional internal combustion engine traction with electric traction requires a complete redesign of the vehicle's structure to meet the structural requirements of electric drive.

[0003] Electric traction has economic and efficiency advantages for short-distance traction within the factory and is suitable for all kinds of heavy-load or light-load vehicles.

[0004] The shock absorber of a rail tractor is usually set at the wheel axle position. How to set up a new shock absorber mechanism to adapt to the axle structure of the rail tractor is a market demand. Utility Model Content

[0005] The utility model provides a rail tractor shock absorbing mechanism, which solves the shock absorbing problem of the rail tractor.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model provides a rail tractor shock-absorbing mechanism, which is arranged on a longitudinal beam of a rail tractor chassis. The longitudinal beam of the rail tractor chassis is a longitudinally arranged metal plate, and includes an outer shock absorber and an inner shock absorber.

[0008] The inner shock absorber and the outer shock absorber respectively include a fixing plate, a rectangular frame, a shock absorbing spring and a shock absorbing guide shaft;

[0009] The fixing plate is arranged on one side of the rectangular frame. The fixing plate is a rectangular plate and is welded to the rectangular frame around one circumference.

[0010] The fixing plate is fitted into the side surface of the longitudinal beam of the rail tractor chassis, and fixing holes are respectively provided on the fixing plate and the longitudinal beam of the rail tractor chassis. A fixing shaft is passed through the fixing hole, and the fixing shaft fixes the fixing plate and the longitudinal beam of the rail tractor chassis. The shock-absorbing spring is provided at the lower part of the rectangular frame, and a shock-absorbing guide shaft is sleeved on the shock-absorbing spring. The lower part of the shock-absorbing spring is a shock-absorbing plate, and the shock-absorbing plate is connected to the axle of the rail tractor.

[0011] According to the rail tractor shock absorbing mechanism, an axle connecting plate is provided at the lower portion of the shock absorbing plate, and the axle connecting plate is provided with mounting holes and is fixedly connected to the axle mechanism by bolts.

[0012] According to the rail tractor shock-absorbing mechanism, the inner shock absorber is provided with four groups of shock-absorbing springs, the upper end of the shock-absorbing guide shaft is provided with an integrated rotating hexagonal end head, the lower part passes through the shock-absorbing spring, the middle part of the shock-absorbing guide shaft is a smooth axis, and the lower part is a threaded part. The threaded part is provided with two groups of fixing nuts at the lower part of the shock-absorbing plate, and the lower part of the thread is provided with a pin hole for inserting the pin shaft to limit the fixing nut.

[0013] According to the shock absorbing mechanism of the rail tractor, the outer shock absorber is provided with three groups of shock absorbing springs, of which two groups of shock absorbing guide shafts have integrally rotatable hexagonal ends on the upper parts and are located on both sides, and one group of shock absorbing guide shafts in the middle is fixed to the shock absorbing plate at the lower part, and passes through the guide hole of the rectangular frame at the upper part, and the shock absorbing springs are located between the rectangular frame and the shock absorbing plate.

[0014] According to the rail tractor shock absorbing mechanism, a reinforcing plate fixed to the longitudinal beam of the rail tractor chassis is provided on the upper portion of the inner shock absorbing rectangular frame, and the reinforcing plate is arranged vertically.

[0015] According to the rail tractor shock absorbing mechanism, a plurality of groups of vertical reinforcing ribs are provided in the rectangular frame, and the reinforcing ribs are arranged in parallel.

[0016] The advantages of the present invention are:

[0017] The device's shock-absorbing mechanism is matched with an electric drive axle, which is suitable for heavy-load short-distance traction and realizes shock absorption of the traction locomotive;

[0018] The device has a simple shock absorption mechanism and is suitable for track travel shock absorption environments without lateral impacts, compared with steel plate shock absorption or other wheel-type multi-link shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is the inner shock absorption structure diagram of the utility model.

[0021] Figure 3 This is the outer shock absorption structure diagram of the utility model.

[0022] Figure 4 This is a side structural diagram of the utility model.

[0023] Figure 5 It is an installation position diagram of the utility model.

[0024] Figure numerals: 1. outer shock absorber, 2. inner shock absorber, 3. fixing plate, 4. rectangular frame, 41. reinforcing rib, 42. guide hole, 5. shock absorber spring, 6. shock absorber guide shaft, 61. integrally rotating hexagonal end, 62. fixing nut, 63. pin, 7. reinforcing plate, 8. axle connecting plate, 9. axle mechanism, 10. longitudinal beam of rail tractor chassis, 11 shock absorber plate. DETAILED DESCRIPTION

[0025] The utility model provides a shock absorbing mechanism for a rail tractor, which is characterized in that it is arranged on a longitudinal beam of a rail tractor chassis, wherein the longitudinal beam of the rail tractor chassis is a longitudinally arranged metal plate, and comprises an outer shock absorber 1 and an inner shock absorber 2;

[0026] The inner shock absorber 2 and the outer shock absorber 1 respectively include a fixing plate 3, a rectangular frame 4, a shock absorbing spring 5 and a shock absorbing guide shaft 6.

[0027] Specifically, the rectangular frame 4 is a quadrilateral, including upper and lower plates and left and right plates, with the left and right plates disposed on the left and right sides of the edge between the upper and lower plates. The fixed plate 3 is disposed on one side of the rectangular frame 4, and the fixed plate 3 is a rectangular plate, and is welded to the rectangular frame 4 around one side.

[0028] The inner side of the fixing plate 3 is aligned with the side of the longitudinal beam of the rail tractor chassis. Specifically, the fixing plate 3 and the longitudinal beam of the rail tractor chassis each have a fixing hole, and a fixing shaft is passed through the fixing hole to fix the fixing plate 3 and the longitudinal beam of the rail tractor chassis. The fixing shaft can be a bolt or a rivet structure.

[0029] The damping spring 5 is provided at the lower part of the rectangular frame 4 , and a damping guide shaft 6 is sleeved on the damping spring 5 . The lower part of the damping spring 5 is a damping plate, which is connected to the axle of the rail tractor.

[0030] An axle connecting plate 8 is provided at the lower portion of the shock absorbing plate. The axle connecting plate 8 is provided with mounting holes and is fixedly connected to the axle mechanism 9 by bolts.

[0031] The inner shock absorber 2 is provided with four groups of shock absorber springs 5. The upper end of the shock absorber guide shaft 6 is provided with an integrated rotating hexagonal end head, and the lower part passes through the shock absorber spring 5. The middle part of the shock absorber guide shaft 6 is a smooth axis, and the lower part is a thread. The threaded part is provided with two groups of fixing nuts at the lower part of the shock absorber plate, and the lower part of the thread is provided with a pin hole to insert the pin shaft to limit the fixing nut.

[0032] The outer shock absorber 1 is equipped with three sets of shock-absorbing springs 5. Two sets of shock-absorbing guide shafts 6 have integrally rotatable hexagonal ends on their upper parts and are located on both sides. The lower part of the shock-absorbing guide shaft 6 in the middle is fixed to the shock-absorbing plate, and the upper part passes through the guide hole 42 in the rectangular frame 4. The shock-absorbing springs 5 ​​are located between the rectangular frame 4 and the shock-absorbing plate. The upper part of the rectangular frame 4 of the inner shock absorber 2 is equipped with a reinforcement plate 7 fixed to the longitudinal beam of the rail tractor chassis. The reinforcement plate 7 is arranged vertically. The rectangular frame 4 is equipped with multiple sets of vertical reinforcement ribs 41, which are arranged in parallel.

[0033] In the tractor used in the device, the longitudinal beam of the rail tractor chassis is composed of two groups of plate metals, and a cross beam is set between the two groups of plate metals to connect them.

[0034] The shock-absorbing structure of this device is suitable for rail traction and is suitable for rail traction vehicles without lateral impact. It solves the problem of shock-absorbing installation of electric drive axles. This device is suitable for use on traction locomotives with small strokes. This device uses multiple groups of shock-absorbing springs, and the shock-absorbing stability is better than that of a single shock absorber.

Claims

1. A rail tractor shock absorbing mechanism, characterized in that: The longitudinal beam of the chassis of the rail tractor is provided, and the longitudinal beam of the chassis of the rail tractor is a longitudinally arranged metal plate, including an outer shock absorber (1) and an inner shock absorber (2); The inner shock absorber (2) and the outer shock absorber (1) respectively include a fixing plate (3), a rectangular frame (4), a shock absorbing spring (5) and a shock absorbing guide shaft (6); The fixed plate (3) is provided on one side of the rectangular frame (4), and the fixed plate (3) is a rectangular plate, and is welded to the rectangular frame (4) around one circumference; The fixing plate (3) is fitted to the side of the longitudinal beam of the rail tractor chassis. The fixing plate (3) and the longitudinal beam of the rail tractor chassis are respectively provided with fixing holes. A fixing shaft is passed through the fixing hole. The fixing shaft fixes the fixing plate (3) and the longitudinal beam of the rail tractor chassis. The shock-absorbing spring (5) is provided at the lower part of the rectangular frame (4). A shock-absorbing guide shaft (6) is sleeved on the shock-absorbing spring (5). The lower part of the shock-absorbing spring (5) is a shock-absorbing plate, and the shock-absorbing plate is connected to the axle of the rail tractor.

2. The rail tractor shock absorbing mechanism according to claim 1, characterized in that: An axle connecting plate (8) is provided at the lower portion of the shock-absorbing plate. The axle connecting plate (8) is provided with mounting holes and is fixedly connected to the axle mechanism (9) by bolts.

3. The rail tractor shock absorbing mechanism according to claim 1, wherein: The inner shock absorber (2) is provided with Four groups of shock-absorbing springs (5), the upper end of the shock-absorbing guide shaft (6) is provided with an integral rotating hexagonal end, the lower part of which passes through the shock-absorbing spring (5), the middle part of the shock-absorbing guide shaft (6) is a smooth axis, the lower part is a thread, the threaded part is provided with two groups of fixing nuts at the lower part of the shock-absorbing plate, and the lower part of the thread is provided with a pin hole for inserting a pin shaft to limit the fixing nut.

4. The rail tractor shock absorbing mechanism according to claim 1, characterized in that: The outer shock absorber (1) is provided with three groups of shock absorbing springs (5), wherein the upper parts of the two groups of shock absorbing guide shafts (6) are provided with integral rotating hexagonal ends and are located on both sides, and the lower part of the shock absorbing guide shaft (6) in the middle is fixed to the shock absorbing plate, and the upper part passes through the guide hole (42) of the rectangular frame (4), and the shock absorbing spring (5) is located between the rectangular frame (4) and the shock absorbing plate.

5. The rail tractor shock absorbing mechanism according to claim 1, characterized in that: The upper portion of the rectangular frame (4) of the inner shock absorber (2) is provided with a reinforcing plate (7) fixed to the longitudinal beam of the chassis of the rail tractor, and the reinforcing plate (7) is arranged vertically.

6. The rail tractor shock absorbing mechanism according to claim 1, characterized in that: A plurality of groups of vertical reinforcing ribs (41) are provided in the rectangular frame (4), and the reinforcing ribs (41) are arranged in parallel.