A measuring device of a bearing press-fit machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HEQIANG MACHINERY DEV LIMITED BY SHARE
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing bearing press-fit measuring devices cannot meet the diverse needs of the market and customers, and cannot detect the real-time lifting height of the wheelset in a timely manner, resulting in the axle and the hydraulic cylinder not being on the same centerline, which affects the accuracy of bearing press-fit and the safety of train operation.
A measuring device was designed, comprising a cylinder support, a double piston rod cylinder, a connector, a wire encoder, a measuring seat, and a guide assembly. The device enables real-time height detection and adjustment of the wheelset through a guide rail and guide groove pair, ensuring that the axle and the cylinder are aligned with the center line.
This ensures the precision of bearing press-fitting, improving the safety and reliability of train operation.
Smart Images

Figure CN224535057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to equipment machinery for rail transit, specifically to a measuring device for a bearing press-fitting machine. Background Technology
[0002] There are various measuring devices used for bearing press fitting, with laser measuring devices being commonly used, but these still cannot meet the diverse needs of the market and customers. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides a measuring device for a bearing press-fitting machine. It has a simple structure, is economical and practical, and can detect the real-time lifting height of the wheelset in a timely manner, feeding back to the control system for adjustment, thereby ensuring that the axle and the hydraulic cylinder are aligned with the center line.
[0004] To achieve the above objectives, the technical solution of this utility model is a measuring device for a bearing press-fitting machine, comprising a main body of the bearing press-fitting machine, characterized in that: the measuring device is mounted on the frame of the main body of the bearing press-fitting machine, the measuring device is provided with a cylinder support, a double piston rod cylinder is provided in the cylinder support, a connector is installed at the lower piston rod end of the cylinder, a pull-wire encoder is connected to the connector, a measuring seat is installed at the upper piston rod end of the cylinder, a mounting plate is provided on the side of the measuring seat, and a guide assembly is provided between the mounting plate and the frame of the main body of the bearing press-fitting machine.
[0005] The guiding component is a guide rail and guide groove pair.
[0006] The measuring seat is equipped with a nylon block.
[0007] The beneficial effects of this utility model are that it has a simple structure, is economical and practical, can detect the real-time lifting height of the wheelset in a timely manner, and feed back to the control system for adjustment, so that the axle and the oil cylinder are aligned with the center line, ensuring the accuracy of bearing pressing and thus ensuring the safety of train operation. Attached Figure Description
[0008] Figure 1 This is a three-dimensional view of the measuring device of this utility model.
[0009] Figure 2 This is a diagram showing the installation location of the measuring device of this utility model.
[0010] Figure 3-5 This is a diagram illustrating the working process of this utility model.
[0011] In the picture:
[0012] 100 A measuring device for a bearing press-fitting machine;
[0013] 1 bearing press machine main unit, 11 machine frame;
[0014] 2 Measuring device, 21 Cylinder support, 22 Double piston rod cylinder, 23 Connector, 24 Wire encoder, 25 Measuring seat, 26 Mounting plate, 27 Guide assembly (guide rail and guide groove pair), 28 Nylon block;
[0015] 3 rounds;
[0016] 4 bearings. Detailed Implementation
[0017] The embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0018] like Figures 1 to 5 As shown, this utility model discloses a measuring device 100 for a bearing press-fitting machine, including a bearing press-fitting machine main unit 1. The measuring device 2 is mounted on the frame 11 of the bearing press-fitting machine main unit. The measuring device is equipped with a cylinder support 21, and a double piston rod cylinder 22 is provided in the cylinder support to provide power to move the measuring seat up and down. A connector 23 is installed at the lower piston rod end of the cylinder, and a wire encoder 24 is connected to the connector. The wire encoder converts the displacement into an electrical signal. A measuring seat 25 is installed at the upper piston rod end of the cylinder, and a mounting plate 26 is provided on the side of the measuring seat. A guide assembly 27 is provided between the mounting plate and the frame of the bearing press-fitting machine main unit.
[0019] The guiding component is a guide rail and guide groove pair.
[0020] The measuring seat is equipped with nylon blocks 28 to prevent damage to the wheelset;
[0021] This utility model is mounted on the frame of the bearing press machine main unit via a hydraulic cylinder support and a mounting plate;
[0022] The working process of this wheelset is illustrated below:
[0023] like Figure 3 As shown, the wheelset enters the bearing press-fitting machine center;
[0024] like Figure 4 As shown, the measuring device is activated to measure whether the wheelset coincides with the center line of the hydraulic cylinder, and adjusts it in conjunction with the lifting device to make them coincide.
[0025] like Figure 5 As shown, after the wheelset and the center line of the hydraulic cylinder are aligned, the measuring device is removed, and the bearing is press-fitted.
[0026] The above description is merely one embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 measuring device for a bearing press-fitting machine, comprising the main body of the bearing press-fitting machine, characterized in that: The measuring device is mounted on the frame of the bearing press machine. The measuring device is equipped with a cylinder support, in which a double piston rod cylinder is installed. A connector is installed at the lower piston rod end of the cylinder, and a wire encoder is connected to the connector. A measuring seat is installed at the upper piston rod end of the cylinder, and a mounting plate is provided on the side of the measuring seat. A guide assembly is provided between the mounting plate and the frame of the bearing press machine.
2. The measuring device for a bearing press-fitting machine as described in claim 1, characterized in that: The guiding component is a guide rail and guide groove pair.
3. The measuring device for a bearing press-fitting machine as described in claim 1, characterized in that: The measuring seat is equipped with a nylon block.