Title:
HYDRAULIC CYLINDER AND WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/184854
Kind Code:
A1
Abstract:
The present application relates to the technical field of hydraulic elements, and provides a hydraulic cylinder and a working machine. The hydraulic cylinder comprises a cylinder body, a piston, a piston rod and a primary buffer structure. The primary buffer structure comprises: a guide member, slidably disposed on the cylinder body and slidably fitted over the piston rod, the end of the guide member close to the piston abutting against the piston, a buffer inclined surface being provided on the guide member, and from the end of the piston rod close to the piston to the end away from the piston, the buffer inclined surface gradually inclining towards the piston rod; a sliding block, slidably connected to the cylinder body in a radial direction of the cylinder body, the sliding block abutting against the buffer inclined surface; and a first elastic member, respectively connected to the cylinder body and the sliding block, the first elastic member being used for driving the sliding block towards the direction of the guide member. Under the action of the primary buffer structure, the sliding block provides resistance for the guide member, so that the speed of the piston is reduced, the piston and the cylinder body are prevented from being impacted to generate vibration and noise, and thus the hydraulic cylinder is prevented from being damaged.
Inventors:
LIU LUFENG (CN)
ZHONG XIANMING (CN)
ZHONG XIANMING (CN)
Application Number:
PCT/CN2022/116421
Publication Date:
October 05, 2023
Filing Date:
September 01, 2022
Export Citation:
Assignee:
LOUDI ZHONGXING HYDRAULIC COMPONENTS CO LTD (CN)
International Classes:
F15B15/22; F15B15/14
Foreign References:
| CN114576235A | 2022-06-03 | |||
| CN206290528U | 2017-06-30 | |||
| CN207640969U | 2018-07-24 | |||
| CN209414302U | 2019-09-20 | |||
| CN111676807A | 2020-09-18 | |||
| CN107120333A | 2017-09-01 | |||
| JPH07167115A | 1995-07-04 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
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