一系轴箱弹簧装置、转向架、轨道车辆及转向架调整工装
By setting a tapered hole for a limiting post in the spring device of the primary axle box of a rail vehicle, the fasteners can be easily disassembled and assembled, solving the space limitation problem in the prior art and improving the efficiency of wheel weight difference adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC DALIAN CO LTD
- Filing Date
- 2025-09-29
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, the clamping bolts of the primary axle box spring device of rail vehicles have a long axial length, which results in limited disassembly space when the brake line is installed directly above the primary axle box spring device, making it impossible to directly install and remove the clamping bolts, thus affecting the wheel weight difference adjustment efficiency.
A series of axle box spring devices were designed, including a spring assembly, a top plate, a base, and a limiting post. The limiting post is provided with a tapered hole. The fastener is threadedly connected to the threaded connection hole of the base through the tapered hole. The large end of the tapered hole is away from the threaded connection hole. When the fastener is disassembled or assembled, it is tilted into the tapered hole and slides along the direction, reducing space occupation and realizing convenient assembly and disassembly of the fastener.
It effectively reduces the space occupied during fastener installation and removal, improves the efficiency of wheel weight difference adjustment, simplifies the adjustment process, and increases adjustment efficiency.
Smart Images
Figure CN224511121U_ABST
Abstract
Claims
1. A primary axle box spring device characterized by, The device includes a spring assembly (1), a top plate (2), a base (3), and a limiting post (4). The spring assembly (1) is clamped between the top plate (2) and the base (3) along the orientation. The limiting post (4) is inserted into the top plate (2) along the orientation and partially supported on the top plate (2). The limiting post (4) has a tapered hole (41) that extends along the orientation. The base (3) has a threaded connection hole (321) that extends along the orientation. A fastener (100) can pass through the tapered hole (41) and be threadedly connected to the threaded connection hole (321). The large end of the tapered hole (41) is away from the threaded connection hole (321) along the orientation relative to the small end of the tapered hole (41). The orientation is parallel to the axial direction of the spring assembly (1).
2. The pitman arm spring device of claim 1, wherein The limiting post (4) includes a first limiting part (42) and a second limiting part (43) connected to each other. The top plate (2) is provided with a first positioning hole that passes through along the orientation. The first limiting part (42) is supported on the top plate (2) along the orientation. The second limiting part (43) is inserted into the first positioning hole. The tapered hole (41) passes through the first limiting part (42) and the second limiting part (43) along the orientation.
3. The pitman arm spring device of claim 2, wherein, The first limiting part (42) is flat; and / or the second limiting part (43) is flat.
4. A pitman box spring device according to any one of claims 1-3, characterized in that The base (3) includes a base body (31) and a connecting part (32) connected to each other. The spring assembly (1) is sleeved on the outer periphery of the connecting part (32). The spring assembly (1) is clamped between the top plate (2) and the base body (31) along the orientation. The connecting part (32) is provided with the threaded connection hole (321).
5. The primary axle box spring device according to claim 4, characterized in that, The primary axle box spring device also includes a damping pad (5), which is sleeved on the outer periphery of the connecting part (32) and is clamped between the spring assembly (1) and the base body (31) along the orientation.
6. The pitman arm spring device of claim 5, wherein, The vibration damping pad (5) is fixedly connected to the base body (31); and / or, the base body (31) completely covers the orthogonal projection of the vibration damping pad (5) along the orthogonal projection of ...
7. Bogie comprising a frame (10), characterized in that The bogie further includes a primary axle box spring device as described in any one of claims 1-6, the frame (10) is provided with a connected second positioning hole and a clearance hole (101), the frame (10) is supported on the top plate (2) along the orientation, the portion of the limiting post (4) supported on the top plate (2) is inserted into the second positioning hole along the orientation and abuts against the inner bottom wall of the second positioning hole, and the clearance hole (101) is located directly above the limiting post (4) along the orientation.
8. The bogie of claim 7, wherein The orthographic projection of the clearance hole (101) onto the preset plane along the orientation completely covers the orthographic projection of the tapered hole (41) onto the preset plane along the orientation, which is perpendicular to the preset plane.
9. Railway vehicle, characterised in that Includes the bogie as described in any one of claims 7-8.
10. A bogie adjustment tool characterised in that, The fastener (100), a first washer (200), and a second washer (300) are included. The outer peripheral wall of the first washer (200) is recessed with a first clearance groove (210) that extends through both ends of the first washer (200) in the thickness direction. The outer peripheral wall of the second washer (300) is recessed with a second clearance groove (310) that extends through both ends of the second washer (300) in the thickness direction. The groove width of the first clearance groove (210) perpendicular to its own depth direction and the groove width of the second clearance groove (310) perpendicular to its own depth direction are both greater than the outer diameter of the threaded portion of the fastener (100). The bogie adjustment fixture is used for the bogie according to any one of claims 7-8. The first shim (200) can be supported on the limiting post (4) along the orientation and inserted into the clearance hole (101). The fastener (100) can pass through the first clearance groove (210) and the tapered hole (41) in sequence and be threadedly connected to the threaded connection hole (321). The second shim (300) can be supported on the frame (10) along the orientation and cover the clearance hole (101). The fastener (100) can also pass through the second clearance groove (310), the clearance hole (101) and the tapered hole (41) in sequence and be threadedly connected to the threaded connection hole (321).