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Excavator oil cylinder piston protecting device

A protection device and piston technology, applied in the direction of fluid pressure actuation device, etc., can solve the problems of shortening the service life of the oil cylinder, poor sealing effect, complicated installation and manufacturing process, etc., and achieve structural strength improvement, good protection effect and reasonable design Effect

Inactive Publication Date: 2019-06-11
浙江神霸矿山机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the installation and manufacturing process of this solution is complicated, and the sealing effect is poor. After repeated operation of the oil cylinder, the sealing ring is easily worn. Due to the low structural strength, oil leakage occurs in the oil cylinder, and the working stability of the oil cylinder gradually deteriorates. shortened cylinder life

Method used

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  • Excavator oil cylinder piston protecting device

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, the excavator oil cylinder piston protection device is arranged between the cylinder body 1 and the piston 2. The device includes a sliding sealing ring 3 arranged in the middle of the piston 2, and first sliding sealing rings are respectively arranged on both sides of the sliding sealing ring 3. ring 4 and the second sliding ring 5, a first anti-wear device 6 is provided between the sliding sealing ring 3 and the first sliding ring 4, and a second anti-wearing device 6 is provided between the sliding sealing ring 3 and the second sliding ring 5 device7. As an optimized solution, both the first anti-wear device 6 and the second anti-wear device 7 here use anti-wear rings.

[0016] Specifically, the first slide ring 4 and the second slide ring 5 are arranged symmetrically. The first anti-wear device...

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Abstract

The invention belongs to the technical field of mechanical equipment, and relates to a protecting device, in particular to an excavator oil cylinder piston protecting device. The excavator oil cylinder piston protecting device solves such technical problems as unreasonable design in the prior art. The excavator oil cylinder piston protecting device is arranged between a cylinder block and a piston, and is characterized by comprising a slide sealing ring arranged at the middle part of the piston; a first slide ring and a second slide ring are arranged on two sides of the slide sealing ring; a first wear resisting device is arranged between the slide sealing ring and the first slide ring; and a second wear resisting device is arranged between the slide sealing ring and the second slide ring.The excavator oil cylinder piston protecting device has the advantages of reasonable design, simple structure, convenience to install, high structural strength, high tightness and long service life.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and relates to a protection device, in particular to an excavator oil cylinder piston protection device. Background technique [0002] Hydraulic cylinders have been widely used in hydraulic equipment, which mainly include cylinders, pistons, piston rod assemblies and guide sleeves. The known pistons are generally arranged at one end of the piston rod; and the sealing protection between the piston and the cylinder generally adopts a sealing ring. Although this structure can protect the piston to a certain extent, after the oil cylinder has worked for a long time, its sealing performance will deteriorate, which will easily damage the piston and cause the entire oil cylinder to be paralyzed. [0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and proposed various solutions. Chinese patent literature discloses a piston sealin...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/20
Inventor 叶巍辉
Owner 浙江神霸矿山机械有限公司