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Low-leakage magnetic buffering hydraulic cylinder

A technology of buffering hydraulic cylinder and magnetic force, applied in the field of hydraulic cylinder, can solve the problems of unsatisfactory sealing effect, no breakthrough in sealing mechanism, high price, etc., achieve good high and low pressure sealing effect, increase service life, and reduce cylinder vibration. Effect

Inactive Publication Date: 2013-03-06
XUZHOU YONGJIA HYDRAULIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the excellent selection of materials, foreign rubber composite sealing rings require high processing precision of supporting parts, which shows certain advantag

Method used

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  • Low-leakage magnetic buffering hydraulic cylinder

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Embodiment Construction

[0009] The structure of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0010] like figure 1 As shown, the hydraulic cylinder of the present invention includes a cylinder barrel 1, a cylinder bottom 2, a piston 3, a piston coil 4, a cylinder bottom coil 5, a piston rod 6, a guide sleeve 7, a guide sleeve coil 8, a sealing ring 9 and a support ring 10; The cylinder bottom 2 is welded to the cylinder barrel 1; the cylinder bottom coil 5 is wound at the junction of the cylinder bottom 2 and the inner wall of the cylinder, the guide sleeve 7 is fixed on the other side of the cylinder barrel 1, and the cylindrical surface of the guide sleeve 8 is wound with the guide sleeve coil 8. After one end of the piston rod 6 passes through the guide sleeve 7, a piston 3 is installed at one end of the piston rod 6 in the cylinder, and a piston coil 4 is wound on the inner cylindrical surface of the piston 3; In the outer ...

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Abstract

The invention discloses a low-leakage magnetic buffering hydraulic cylinder, and belongs to hydraulic oil cylinders of engineering machines. The sealing of a piston utilizes a sealing component capable of radially deforming by utilizing the pressure of a working medium, so that the sealing performance during seal abrasion and high loads are ensured. Coils are wound around a connection part of a cylinder cover and a cylinder barrel, an inner cylindrical surface of the piston and a cylindrical surface of a guide sleeve, and the cylinder cover, the piston and the guide sleeve respectively form three electromagnets after the coils are electrified, so that the directions of magnetic poles of the electromagnets are controlled by respectively controlling the switch-on of the three coils and changing athe direction of current. A bidirectional buffering function of the hydraulic oil cylinder is realized through the difference of the magnetic poles of the three electromagnets.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder for engineering machinery, in particular to a low-leakage magnetic buffer hydraulic cylinder. Background technique [0002] In construction machinery, the use environment of hydraulic cylinders is relatively harsh, and the load changes on hydraulic cylinders are more complicated. When a hydraulic cylinder drags a heavy component for high-speed motion to the end of its stroke, severe mechanical collisions often occur. In addition, the sudden stop of the piston often causes water hammer in the pressure pipeline, resulting in great impact and noise. The above mechanical shocks not only affect the working performance of construction machinery, but also damage hydraulic cylinders and other components of the hydraulic system, which is very dangerous. Research now shows that the impact of hydraulic cylinders mainly comes from inertial force, hydraulic thrust, overload and gravity, among which the effect of i...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/22
Inventor 王世永闫梅杨海峰
Owner XUZHOU YONGJIA HYDRAULIC EQUIP
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