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Moving frame type unbalanced load resisting hydraulic cylinder

A technology for moving frames and hydraulic cylinders, applied in the field of hydraulic cylinders, can solve problems such as poor anti-eccentric load effect and inability to solve the impact of hydraulic cylinder performance, and achieve the effects of reducing friction, large radial eccentric loads, and improving bearing stiffness

Inactive Publication Date: 2019-10-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its anti-eccentric load effect is not as good as the combination of static pressure support and forward cone structure in the present invention, and it cannot solve the impact of internal leakage on the performance of hydraulic cylinders

Method used

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  • Moving frame type unbalanced load resisting hydraulic cylinder
  • Moving frame type unbalanced load resisting hydraulic cylinder
  • Moving frame type unbalanced load resisting hydraulic cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Such as figure 1 with 2 As shown, the present invention provides a mobile frame type anti-eccentric load hydraulic cylinder, including a cylinder head 1, a side support tube 2, a side support piston 3, a cylinder head 4, a piston 6, a connecting frame 8, a linear bearing 9 and a cylinder barrel 11 Composition, four side branch cylinders and connecting frames that can move with the piston are added around the traditional hydraulic cylinder, and a linear bearing 9 is installed at the end of the side branch piston. The bottom end of the side support tube 2 is fixed to the hydraulic cylinder head 1 in the form of threads, and the top end is fixed to the cylinder head 4 with a stud 5 and a hex nut 10. Track grooves that allow the balls to roll.

[0032] It should be pointed out that multiple side branch cylinders can be evenly distributed around the main piston rod within the allowable range. In this embodiment, only 4 side branch cylinders are analyzed, and changes based ...

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PUM

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Abstract

The invention relates to a moving frame type unbalanced load resisting hydraulic cylinder. The moving frame type unbalanced load resisting hydraulic cylinder comprises a hydraulic cylinder body composed of a cylinder cover, a cylinder barrel, a cylinder head and a piston. The moving frame type unbalanced load resisting hydraulic cylinder further comprises multiple side branch piston devices arranged on the outer side of the cylinder barrel and used for preventing unbalanced load. Each side branch piston device comprises a side branch barrel, a side branch piston which moves in a reciprocatingmanner along with the piston in the side branch barrel and a connection frame connected with the side branch piston and the outer end of the piston. Compared with the prior art, the moving frame typeunbalanced load resisting hydraulic cylinder has the advantages of assisting in bearing unbalanced load, effectively improving bearing rigidity, reducing friction at the piston and the like.

Description

technical field [0001] The invention relates to the field of hydraulic cylinders, in particular to a movable frame-type offset-load-resistant hydraulic cylinder. Background technique [0002] As the actuator of the hydraulic system, the performance of the hydraulic cylinder directly affects the control accuracy and response speed of the system. Hydraulic cylinders used in aerospace and other fields require low friction and anti-offset load capabilities to meet heavy and off-load requirements. The piston rod and cylinder body of the hydraulic cylinder and the piston and cylinder body are usually sealed with seals, which increases the frictional resistance when the piston moves and reduces the dynamic performance of the hydraulic cylinder. At the same time, in actual working conditions, the hydraulic cylinder will bear a certain lateral partial load, and the lateral partial load will increase the friction force at the seal of the hydraulic cylinder, which will eventually caus...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/20F16C29/04G06F17/50
CPCF15B15/1404F15B15/1423F15B15/1471F15B15/20F16C29/04G06F30/17
Inventor 章志恒訚耀保李长明原佳阳张阳付嘉华
Owner TONGJI UNIV
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