Non-differential follow-up synchronous double-cylinder lifting mechanism

A non-differential follow-up and follow-up technology, which is applied to the upper structure, mechanical equipment, and upper structure of trucks, can solve problems such as unreasonable structure and poor stability, and achieve weight reduction, low cost, and The effect of high production efficiency

Inactive Publication Date: 2020-09-01
ZHEJIANG KELI VEHICLE CONTROL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the shortcomings of poor stability and unreasonable structure in the prior art, the present invention provides a non-differential follow-up synchronous double-cylinder lifting mechanism

Method used

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  • Non-differential follow-up synchronous double-cylinder lifting mechanism
  • Non-differential follow-up synchronous double-cylinder lifting mechanism
  • Non-differential follow-up synchronous double-cylinder lifting mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The lifting mechanism of the non-differential follow-up synchronous double-cylinder includes an oil pump 1 and a reversing valve 10. The oil pump 1 is connected to the reversing valve 10 and transmits hydraulic oil to the outside through the reversing valve 10, and also includes the main oil cylinder 2 and the auxiliary oil cylinder 3. It also includes a first oil circuit 11 and a second oil circuit 12. The main upper chamber 201 of the main oil cylinder 2 and the auxiliary upper chamber 301 of the auxiliary oil cylinder 3 are connected to each other and are connected to the outside of the reversing valve 10 through the first oil circuit 11. Port A, the main lower chamber 202 of the main cylinder 2 and the secondary lower chamber 302 of the secondary cylinder 3 communicate with each other and are connected to another external port B of the reversing valve 10 through the second oil passage 12 .

[0029] It also includes a two-way hydraulic control valve 3 installed on the...

Embodiment 2

[0045] Same as Embodiment 1, the difference is that the oil circuit of the first oil circuit 11 close to the external port A of the reversing valve 10 is provided with a one-way damping valve 4, and the one-way damping valve 4 only damps the oil flowing into the external port A. Therefore, a fixed damping valve 5 is provided on the oil circuit of the second oil circuit 12 close to the external port B of the reversing valve 10 .

Embodiment 3

[0047] Same as Embodiment 1, the difference is that the reversing valve 10 is a two-position four-way reversing valve.

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PUM

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Abstract

The invention relates to the field of lifting devices, and discloses a non-differential follow-up synchronous double-cylinder lifting mechanism. The lifting mechanism comprises an oil pump (1), a reversing valve (10), a main oil cylinder (2), an auxiliary oil cylinder (3), a first oil circuit (11) and a second oil circuit (12), a main upper cavity (201) and an auxiliary upper cavity (301) communicate with each other and are connected to an outer joint A of the reversing valve (10) through the first oil circuit (11), and a main lower cavity (202) of the main oil cylinder (2) and an auxiliary lower cavity (302) of the main oil cylinder (2) communicate with each other and are connected to another outer joint B of the reversing valve (10) through the second oil circuit (12). The non-differential double-cylinder linkage follow-up design structure is adopted, the product assembly weight is reduced, meanwhile, the synchronous stable work of the lifting/falling process of a cab is realized, and the comfort requirement at the vehicle travelling state is met; and the non-differential follow-up synchronous double-cylinder lifting mechanism has the characteristics of simple structure, low cost, high production efficiency and safety and reliability, and a large application and popularization market is achieved.

Description

technical field [0001] The invention relates to the field of lifting devices, in particular to a lifting mechanism of a non-differential follower type synchronous double-cylinder. Background technique [0002] With the rapid development of the national economy, especially the logistics industry, commercial vehicle customers have put forward higher requirements for the driving comfort of the cab, and more and more commercial vehicle manufacturers have developed commercial vehicles for this purpose. A cab with higher equipment and larger space can provide customers with a better car experience, but this inevitably increases the weight of the cab, and the lifting cylinders that match this high-end cab are currently mostly selected. It is still a conventional differential single-cylinder system, but the cylinder diameter and rod diameter are further increased to meet the requirements of the lifting force, so there are two problems in this lifting design: [0003] 1. When the si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/22F15B13/042B62D33/067
CPCB62D33/067F15B11/22F15B13/027F15B13/042F15B2013/002F15B2211/71F15B2211/782
Inventor 邵金龙吴卓泉胡正中刘先镇周根明陈兵张小昌邱文华
Owner ZHEJIANG KELI VEHICLE CONTROL SYST
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