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Hydraulic buffer rod support structure in the cylinder

A hydraulic buffer and support structure technology, applied in fluid pressure actuation devices, valve details, valve devices, etc., can solve problems such as piston jamming, assembly error out-of-tolerance, cylinder wall roughening, etc.

Active Publication Date: 2019-04-02
LANZHOU HIGH PRESSURE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of processing accuracy, during the processing and assembly process of the hydraulic cylinder piston and the cylinder piston, the accumulative assembly error of the coaxiality of the two may be out of tolerance, and the piston movement will jam after assembly. After a long time, the skew of the piston will Roughing the cylinder wall and rendering the piston seal ineffective

Method used

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  • Hydraulic buffer rod support structure in the cylinder
  • Hydraulic buffer rod support structure in the cylinder
  • Hydraulic buffer rod support structure in the cylinder

Examples

Experimental program
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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the drawings.

[0014] Reference figure 1 , 2 , A hydraulic buffer rod support structure in a cylinder, mainly including oil storage tank 1, hydraulic buffer piston rod 2, hydraulic buffer rod contact section 3, O-ring 4, guide end 5, centralizing piston 6, cylinder piston 7, cylinder 8 .

[0015] Both ends of the cylinder 8 are provided with a hydraulic buffer piston rod 2 and a cylinder piston 7, a centralizing piston 6 is installed in the cylinder, and the central through hole of the centralizing piston 6 is adapted to the hydraulic buffer piston rod 2. One end of the central through hole of the centralizing piston 6 is provided with a guiding end 5 to facilitate guiding the hydraulic buffer piston rod 2 and its hydraulic buffer rod contact section 3 into the central through hole of the centralizing piston 6.

[0016] The centralizing piston 6 is in a sealed connection with the cylinder 8 through a...

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PUM

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Abstract

An air cylinder inner hydraulic buffer rod supporting structure comprises hydraulic buffer rods arranged at two ends of an air cylinder and an air cylinder piston, wherein a centralizing piston is installed in the air cylinder, and a central through hole of the centralizing piston is matched with the hydraulic buffer rods. The air cylinder inner hydraulic buffer rod supporting structure is automatically guided into the centralizing piston according to the linear motion of the piston and a conical structure of the head portion of the piston rod so as to support a piston rod. The problem that the piston rod of a hydraulic buffer cylinder is instable when being rapidly impacted by the air cylinder piston is solved.

Description

Technical field [0001] The invention belongs to the technical field of manufacturing valve actuator cylinders, and specifically relates to a supporting structure capable of automatically righting a hydraulic buffer rod in a cylinder. Background technique [0002] In some cylinders with hydraulic cylinders as buffer devices, it is common that the hydraulic buffer piston rod and the piston rod of the cylinder are connected as a whole. Due to the influence of machining accuracy, during the machining and assembly process of the hydraulic cylinder piston and the cylinder piston, the cumulative assembly error of the coaxiality of the two may be out of tolerance. After assembly, the piston movement will jam. After a long time, the piston will be skewed. Pull the cylinder wall to make the piston seal ineffective. If the cylinder piston rod and the hydraulic buffer cylinder piston rod can be disconnected, the two will not interfere with each other during operation. Summary of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/122F15B15/14F15B15/22
CPCF15B15/1409F15B15/1447F15B15/227F16K31/1223F16K31/1225
Inventor 张国锋陈清流陈文鑫蒋亚琴张锦彬李淑敏张建宝
Owner LANZHOU HIGH PRESSURE VALVE