Groove buffer of hydraulic cylinder

Abstract

The invention relates to a groove buffer of a hydraulic cylinder. The groove buffer of the hydraulic cylinder comprises a hydraulic cylinder, a piston and a cylinder cover fixedly connected to the hydraulic cylinder, the piston is fixedly connected to a plunger, wherein the cylinder cover comprises a cylindrical cavity and a throttle orifice, the throttle orifice is communicated with the cavity, the piston is fixedly connected to a cylindrical buffer block; the outside diameter of the cylindrical buffer block is slightly smaller than the inside diameter of the cavity; the outer wall of the buffer block comprises an arc groove of which the cross section is triangular, and the depth of the groove is gradually increased towards the end part of the buffer block. Compared with the traditional throttle buffer of the hydraulic cylinder, the groove buffer of the hydraulic cylinder, disclosed by the invention, adopts the groove with an arc triangular cross section to buffer, and has the advantages of simple structure, good buffer effect, small hydraulic impact and stable running.

Description

technical field

[0001] The invention relates to the field of hydraulic equipment, in particular to a buffer of a hydraulic cylinder. Background technique

[0002] When the hydraulic cylinder moves at high speed to the end of the stroke, severe mechanical collisions often occur. In addition, the sudden stop of the piston often causes water hammer in the pipeline, resulting in great impact and noise. The above mechanical shocks not only affect the working performance of mechanical equipment, but also damage hydraulic cylinders and other components of the hydraulic system, which is very dangerous. In order to prevent or reduce this kind of impact vibration, a buffer device is installed inside the hydraulic cylinder, which can play a buffering role to a certain extent. Generally, the buffer device used is an annular throttling buffer. The disadvantages of the traditional annular throttling buffer are poor buffering effect and large hydraulic shock. Contents of the invention ...

Examples

Embodiment Construction

[0009] See figure 1 , figure 2 , the present invention comprises a hydraulic cylinder 2, a piston 3 and a cylinder cover 5 fixedly connected to the hydraulic cylinder 2, the piston 3 is fixedly connected to the plunger 1, the cylinder cover 5 has a cylindrical cavity 6 and an orifice 7, and the orifice 7 and the The cavity 6 is connected, the piston 3 is fixedly connected to the cylindrical buffer block 4, the outer diameter of the cylindrical buffer block 4 is slightly smaller than the inner diameter of the cavity 6, and the outer wall of the buffer block 4 has an arc-shaped groove 40 with a triangular cross section. The depth gradually increases towards the end of the buffer block 4 .

[0010] When the present invention works, when the plunger 1 moves toward the cylinder head 5 with the piston 3, after the buffer block 4 enters the cylindrical cavity 5, a buffer oil cavity is formed between the cavity 5 and the piston 3, and the sealed oil only It can flow out of the groo...

technical field

[0001] The invention relates to the field of hydraulic equipment, in particular to a buffer of a hydraulic cylinder. Background technique

[0002] When the hydraulic cylinder moves at high speed to the end of the stroke, severe mechanical collisions often occur. In addition, the sudden stop of the piston often causes water hammer in the pipeline, resulting in great impact and noise. The above mechanical shocks not only affect the working performance of mechanical equipment, but also damage hydraulic cylinders and other components of the hydraulic system, which is very dangerous. In order to prevent or reduce this kind of impact vibration, a buffer device is installed inside the hydraulic cylinder, which can play a buffering role to a certain extent. Generally, the buffer device used is an annular throttling buffer. The disadvantages of the traditional annular throttling buffer are poor buffering effect and large hydraulic shock. Contents of the invention ...

Examples

Embodiment Construction

[0009] See figure 1 , figure 2 , the present invention comprises a hydraulic cylinder 2, a piston 3 and a cylinder cover 5 fixedly connected to the hydraulic cylinder 2, the piston 3 is fixedly connected to the plunger 1, the cylinder cover 5 has a cylindrical cavity 6 and an orifice 7, and the orifice 7 and the The cavity 6 is connected, the piston 3 is fixedly connected to the cylindrical buffer block 4, the outer diameter of the cylindrical buffer block 4 is slightly smaller than the inner diameter of the cavity 6, and the outer wall of the buffer block 4 has an arc-shaped groove 40 with a triangular cross section. The depth gradually increases towards the end of the buffer block 4 .

[0010] When the present invention works, when the plunger 1 moves toward the cylinder head 5 with the piston 3, after the buffer block 4 enters the cylindrical cavity 5, a buffer oil cavity is formed between the cavity 5 and the piston 3, and the sealed oil only It can flow out of the groo...

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