Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck

The technology of a concrete pump truck and a telescopic mechanism is applied in the directions of vehicle maintenance, lifting vehicle accessories, transportation and packaging.

Inactive Publication Date: 2013-09-18
XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the technical problems of slow expansion speed and difficult maintenance in the existing technology

Method used

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  • Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck
  • Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck
  • Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck

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Embodiment Construction

[0057] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0058] The embodiment of the present invention provides a telescopic mechanism with fast telescopic speed, small space occupation, simple structure, not easy to be damaged, and easier maintenance, and a concrete pump truck leg telescopic system provided with the telescopic mechanism.

[0059] Such as Figure 2 ~ Figure 6 As shown, the telescopic mechanism provided by the embodiment of the present invention includes figure 2 The first moving part shown ( figure 2 The middle is the first-level telescopic outrigger) 21, the second moving part ( figure 2 The middle is the secondary telescopic leg) 22. The seat body ( figure 2 The center is the rotating base) 23. Telescopic device ( figure 2 Take the oil cylinder as an example) 24 and the first-stage linkage structure 25, in which:

[0060] The telescopic device 24 includes a first mem...

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PUM

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Abstract

The invention discloses an extension and retraction mechanism and a support leg extension and retraction system for a concrete pump truck, which relate to the technical field of engineering machinery and are used for solving the technical problems of low extension and retraction speeds and difficulty in maintaining existing in the prior art. The extension and retraction mechanism comprises a first moving part, a second moving part, a base body, an extension and retraction device and a first-stage linkage structure; the extension and retraction device comprises a first member and a second member; the first member can extend or retract relative to the second member along a predetermined direction; the first moving part is fixedly connected with the first member; the base body is fixedly connected with the second member; and the first moving part can be used for driving the second moving part to extend or retract relative to the first moving part along a predetermined direction through the first-stage linkage structure in an extension or retraction process. The support leg extension and retraction system for the concrete pump truck comprises the extension and retraction mechanism provided by the invention. Due to the adoption of the extension and retraction mechanism and the support leg extension and retraction system, the extension and retraction speeds of an extension and retraction support leg in the concrete pump truck are increased, the structure is simple, and the maintenance difficulty is lowered.

Description

Technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a telescopic mechanism and a concrete pump truck leg telescopic system provided with the telescopic mechanism. Background technique [0002] The concrete pump truck is a mechanical equipment equipped with a concrete pumping unit and a distributing arm on the chassis of a motor vehicle. The concrete pump truck telescopic outrigger (referred to as the outrigger or telescopic leg) is a structural member that supports the entire concrete pump truck and prevents the concrete pump truck from tipping over when it is working. [0003] In order to make the telescopic outriggers expand and contract in a predetermined direction to reach the working state of the outriggers and the running state of the whole vehicle, the concrete pump truck is specially equipped with outrigger telescopic system, and the telescopic mechanism (or telescopic device) in the outrigger telescopic system is d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60S9/10
Inventor 沈千里吴庆勇刘文波陈玲汪辉白建军王钊
Owner XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
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