Railway freight car brake pipe bending device with electrified upset joint body

By using a contour-designed chuck device and bending die insert, the problem of unstable clamping of the brake tube during the bending process of the electric upsetting joint body was solved, achieving stable clamping and efficient bending, and improving the processing quality and efficiency of the brake tube.

CN117655173BActive Publication Date: 2026-07-03CRRC MEISHAN CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CRRC MEISHAN CO LTD
Filing Date
2023-12-19
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing bending devices cannot effectively clamp and bend brake tubes with electrically upsetting connectors, especially because the outer diameter of the connector body is different from that of the brake tube body and the axial cross section is a stepped structure, resulting in a short and unstable clamping length, making it difficult to complete the processing.

Method used

The device employs a contour-following chuck and bending die insert. The chuck is an openable gripper mechanism with a clamping groove that matches the stepped cross-section of the connector body. Combined with the contour-following structure of the bending die insert and clamping insert, it ensures stable clamping and feeding of the connector body during the bending process.

Benefits of technology

This technology enables stable clamping and bending of the brake tube in an electrically upset joint, preventing it from falling off, improving the quality and efficiency of bending, and meeting the processing requirements of the brake tube in an electrically upset joint.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117655173B_ABST
    Figure CN117655173B_ABST
Patent Text Reader

Abstract

The application discloses a brake pipe bending device of a railway freight car with an electrified upset joint body, which is composed of a bending die assembly driven by a pipe bending machine tool, a movable clamp assembly, a chuck device and a follow-up block; the bending die assembly comprises a bending die and a bending die insert; the movable clamp assembly comprises a movable clamp and a clamp insert; the chuck device is a clamping claw mechanism capable of being opened and closed and is composed of six clamping arms in axial central symmetry; the follow-up block moves with the chuck device. The brake pipe bending device adopts a profiling chuck device, the chuck device is a clamping claw mechanism capable of being opened and closed, the chuck is arranged in a clamping groove matched with the section step of the joint body, and the clamping, feeding movement and pipe bending process are stable and reliable, and the pipe bending structure quality and efficiency are further improved; the bending die insert and the clamp insert are designed in a profiling mode, and are provided with groove-shaped structures matched with the shape of the joint body, so that the problem that the first end of the brake pipe is too short and is difficult to be stably clamped is effectively solved.
Need to check novelty before this filing date? Find Prior Art