Buffer device for piston self-adaptive lubrication telescopic hydraulic cylinder
A telescopic hydraulic cylinder and buffer device technology, applied in the field of hydraulic cylinders, can solve problems such as damage to the piston rod, damage to the telescopic oil cylinder, etc., and achieve the effects of improving reliability, throttling and buffering, slowing down the running speed, and enhancing service life.
Active Publication Date: 2021-01-15
XCMG HYDRAULICS CO LTD
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Problems solved by technology
[0007] In order to meet the development trend of cranes with large flow and high load, improve the hoisting weight and load efficiency, and solve the problems of damage to the seal of the telescopic oil cylinder during high-speed operation and damage to the piston rod and the bottom of the cylinder, the invention provides a piston Buffer device for self-adaptive lubrication telescopic hydraulic cylinder to improve system reliability
Method used
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Embodiment Construction
[0022] The following is a specific embodiment of the present invention, and the present invention will be further described in conjunction with the accompanying drawings.
[0023] combine Figure 1 to Figure 3 As shown, a buffer device for a piston self-adaptive lubrication telescopic hydraulic cylinder, the left end of the cylinder 04 is formed by welding two cylinders. The gland 1 is installed in the left end of the cylinder 04 through threaded connection, and the gland 1 and the cylinder 04 are radially fixed and fixed by two-way screws. The inner wall of the gland 1 slides and fits with the piston rod 5 through the dustproof ring and the F4 support ring, and the F4 material support ring plays a conductive role. The left side of the guide sleeve 2 is axially in contact with the gland 1, and the right side of the guide sleeve 2 is axially connected to the front spacer 3 to play a role of fixing and limiting. The inner wall of the guide sleeve 2 is distributed with sealing ...
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The invention discloses a buffer device for a piston self-adaptive lubrication telescopic hydraulic cylinder. A buffer sleeve is fixed to the inner end of a piston rod, and a buffer structure matchedwith the buffer sleeve is fixed to the center of the cylinder bottom. The inner side of the buffer sleeve is of an inverted-T-shaped step structure, and a first step face and a second step face are included. The buffer structure is step-shaped and is provided with three annular step faces. A baffle sleeving the inner end of the piston rod is arranged on the right side of a piston. A cylindrical hole is formed in the baffle in the axial direction, and the cylindrical hole oppositely communicates with a sealing groove which is used for installing Y rings in the piston. The buffer device has theadvantages of being simple and compact in structure, easy to machine and the like, is used for buffering swing impact of a whole crane due to swing of a lazy arm due to impact of a cylinder bottom structure due to the overlarge pressure at the tail end of the stroke of a telescopic oil cylinder , and can effectively reduce shaking of the whole crane caused by swing of the crane lazy arm. Backpressure generated between the Y rings due to accumulation of hydraulic oil is eliminated, the sealing reliability of a sealing ring is improved, internal leakage of the hydraulic cylinder is reduced, andthe service life of the hydraulic cylinder is prolonged.
Description
technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a buffer device for piston self-adaptive lubrication telescopic hydraulic cylinders. Background technique [0002] At present, the basic means of realizing the expansion and contraction of the boom of small and medium tonnage truck cranes and off-road tire cranes is mainly a rope row structure. The lifting function. Due to the development trend of lightweight and intelligent cranes, in order to improve the comfort of the market and the requirements of hoisting conditions, the output of the hydraulic system of the telescopic boom of the crane is large. When the telescopic boom is extended and retracted, the normal speed block can reach 0.3m / s. Therefore, during the operation of the telescopic cylinder driving the rope row and the telescopic arm of the crane, the high-speed and reciprocating operation of the piston of the telescopic cylinder, the part between the oute...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F15B15/14F15B15/22B66C23/693
CPCF15B15/1423F15B15/1457F15B15/1452F15B15/226B66C23/705
Inventor 刘朋彭亮陈登民张虹源翟新颖陈向兵石雨东
Owner XCMG HYDRAULICS CO LTD