Chain winding ratchet wheel maintenance method

A ratchet and threaded hole technology, which is applied in the field of railway wagon braking system transformation, can solve problems such as excessive cost, unremovable screw, and maintenance, so as to ensure product quality and performance safety, improve maintenance passability, and meet maintenance requirements.

Inactive Publication Date: 2021-10-22
CRRC TAIYUAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lack of maintenance technology of the existing chain ratchet in China leads to an extremely low repair rate of the chain ratchet
[0003] When modifying the chain ratchet, some screws cannot be taken out without anti-loosening modification, some chain ratchets and shafts are rusted, and some chain ratchet screws and chain ratchets are welded to rust, which increases the difficulty of maintenance work
On the basis of the existing maintenance process, it is impossible to overhaul the chain-wound ratchet and the anti-loosening modification of the screw, which leads to an increase in the scrap rate of the chain-wound ratchet, and the cost exceeds the standard seriously

Method used

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  • Chain winding ratchet wheel maintenance method
  • Chain winding ratchet wheel maintenance method
  • Chain winding ratchet wheel maintenance method

Examples

Experimental program
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Embodiment

[0081] Such as Figure 1 to Figure 5 As shown, the present invention provides a method for overhauling a chain-wound ratchet, comprising:

[0082] Take out the rusted or welded shaft 2 in the shaft hole of the winding ratchet 1;

[0083] Take out the rusted or welded bolt 3 in the threaded hole of the chain ratchet 1;

[0084] Counterbore processing and hole reaming processing are carried out sequentially to the first threaded hole of the chain-wound ratchet 1 .

[0085] In this embodiment, taking out the rusted or welded shaft 2 in the shaft hole of the winding ratchet 1 includes:

[0086] Carrying out high-temperature treatment to the shaft rod 2;

[0087] Remove the welding slag at the end of the shaft 2;

[0088] Place the chain-wound ratchet 2 on the first tooling 4;

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Abstract

The invention discloses a chain winding ratchet wheel maintenance method, and relates to the field of railway wagon braking system transformation. The chain winding ratchet wheel maintenance method comprises the following steps of: taking out a rusted or welded shaft rod in a shaft hole of a chain winding ratchet wheel; taking out a rusted or welded bolt in a threaded hole of the chain winding ratchet wheel; and sequentially conducting counter bore machining and chambering machining on a first threaded hole of the chain winding ratchet wheel. According to the chain winding ratchet wheel maintenance method, the shaft hole with problems and the threaded hole with problems are overhauled and optimized, and the originally scrapped chain winding ratchet wheel is overhauled again, so that the product quality is guaranteed, the rejection rate of the chain winding ratchet wheel is reduced, the utilization rate of the chain winding ratchet wheel of a pedal type brake is obviously improved, and the economic cost is saved.

Description

technical field [0001] The invention belongs to the field of railway wagon braking system transformation, and more specifically relates to a method for overhauling a chain-wound ratchet. Background technique [0002] According to telegram <2013> No. 1593 of the transport truck, it is necessary to carry out the transformation of the foot-operated brake machine with the ratchet around the chain and the anti-loosening of the screw. The lack of maintenance technology for the existing chain ratchets in China has resulted in an extremely low repair rate for chain ratchets. [0003] When modifying the chain ratchet, some screws cannot be taken out without anti-loosening modification, some chain ratchets and shafts are rusted, and some chain ratchet screws and chain ratchets are welded to rust, which increases the difficulty of maintenance work. On the basis of the existing maintenance process, it is impossible to overhaul the chain-wound ratchet and the anti-loosening modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 郭垭君郭浩兵常二亮李亚普赵海文李东来
Owner CRRC TAIYUAN CO LTD
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