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A bundled telescopic oil cylinder group

A telescopic oil cylinder and bundling technology, applied in the direction of fluid pressure actuating device, etc., can solve the problems of the telescopic oil cylinder falling, the increase of bolt through-hole clearance, the hidden safety hazards of operators, etc., to achieve convenient installation and disassembly, and prolong service life. , the overall structure of the effect of simplification

Active Publication Date: 2018-04-10
HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fixing method has the following defects: when the telescopic cylinder is in motion, the axial and radial internal stress generated by the binding of the two sets of telescopic cylinders is the radial shear force of the bolts. After working for a certain period of time, the gap between the bolt holes will gradually increase. If the bolts are too large, radial fatigue will occur to the bolts, which will affect the parallelism of the two sets of telescopic cylinders bound together; Both the cylinder and the piston rod will be bent and deformed, which will affect the expansion and contraction of the telescopic arm of the machine, resulting in the paralysis of the telescopic arm of the machine; in severe cases, the bolts will break due to radial fatigue, causing the two sets of telescopic cylinders to fall due to separation from each other. Safety hazards for operators

Method used

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  • A bundled telescopic oil cylinder group
  • A bundled telescopic oil cylinder group
  • A bundled telescopic oil cylinder group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see Figure 2-Figure 4 , a bundled telescopic oil cylinder group, including two sets of telescopic oil cylinders 1 and connecting pieces 2 for fixedly connecting adjacent two groups of telescopic oil cylinders 1, the structures of the two sets of telescopic oil cylinders are the same. When the telescopic oil cylinders are in other groups, the connection relationship is the same as that of the two groups of telescopic oil cylinders.

[0035] The telescopic oil cylinder 1 includes a cylinder barrel 1.1 and a piston rod 1.2 movably arranged inside the cylinder barrel 1.1. The cylinder barrel 1.1 includes a sealed first end 1.11 and a plug for inserting one end of the piston rod 1.2 and concentrically with the central axis. The second end 1.12 (the telescopic oil cylinder is identical in structure with the telescopic oil cylinder in the prior art).

[0036] The connector 2 includes a fixed block 2.1, a fixed bolt 2.2, a flange plate 2.3, a lock nut 2.4 and a set screw grou...

Embodiment 2

[0047] This embodiment differs from Embodiment 1 only in that: the first end of the cylinder barrel of the telescopic oil cylinder described in the first group is connected to the second end of the cylinder barrel of the telescopic oil cylinder described in the second group, and the connection here is specifically: A support plate is respectively welded on the first end of the cylinder barrel of the telescopic oil cylinder described in the first group and on the second end of the cylinder barrel of the telescopic oil cylinder described in the second group, and bolts and nuts are used between the two support plates The combination is fixed.

[0048] In addition, the first end of the cylinder barrel of the telescopic oil cylinder of the first group and the second end of the cylinder barrel of the telescopic oil cylinder of the second group can also adopt other fixing methods in the prior art (such as welding, etc. ) for a fixed connection.

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Abstract

The invention provides a bundle type telescopic cylinder set. The bundle type telescopic cylinder set comprises a plurality of sets of telescopic cylinders and connecting pieces each used for fixedly connecting two corresponding and adjacent telescopic cylinders. Each connecting piece comprises a flange plate, a locking nut and a fastening screw set. The bundle type telescopic cylinder set is simplified in overall structure; between every two adjacent telescopic cylinders, one ends of the telescopic cylinders are connected, the other ends of the telescopic cylinders are fixedly connected through combination of a matching face, the corresponding flange plate, the corresponding locking nut and the corresponding fastening screw set, and therefore the parallelism of all sets of telescopic cylinders inside the bundle type telescopic cylinder set can be effectively guaranteed, and the service life of the bundle type telescopic cylinder set is prolonged; and meanwhile, the condition that the telescopic cylinders fall due to separation of the telescopic cylinders is avoided, and therefore the construction safety is greatly improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a bundled telescopic oil cylinder group. Background technique [0002] Construction machinery telescopic booms are generally driven by bundled telescopic cylinders. [0003] In the prior art, the fixing method of the bundled telescopic oil cylinder is as follows: each of the two ends of the cylinder barrel of the telescopic oil cylinder 1 is welded with a support plate 3, and the two ends of the two groups of telescopic oil cylinders are respectively fixed with bolts 4 and nuts 5 ( See details figure 1 ). This fixing method has the following defects: when the telescopic cylinder is in motion, the axial and radial internal stress generated by the binding of the two sets of telescopic cylinders is the radial shear force of the bolts. After working for a certain period of time, the gap between the bolt holes will gradually increase. If the bolts are too large, radia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/14F15B15/16F15B15/20
CPCF15B15/1404F15B15/1428F15B15/16F15B15/20
Inventor 王祥军龚俊陈斌伍锡文
Owner HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD