Piston with gas buffering function

Abstract

The utility model belongs to the field of buffer pistons, and particularly relates to a piston with a gas buffer function, which comprises a piston tube for a gas piston, a piston head is slidably mounted on the inner side of the piston tube, a bottom rubber head is fixedly mounted at the bottom end of the piston tube, and a connecting flange ring is fixedly sleeved on the outer side of the piston tube. A damping ring is fixedly installed at the top end of the piston pipe, the same piston rod penetrates through the top of the damping ring and the top of the piston pipe in a sliding mode, and a rubber joint is fixedly installed at the end, located in the piston pipe, of the piston rod. The buffering spring is used for assisting and is combined with a gas buffering function, after gas buffering, the buffering spring conducts secondary buffering and provides extra buffering force, the buffering effect is further enhanced, and therefore the situation that the buffering effect is unstable when a single gas piston is affected by the external environment is reduced, and the buffering effect is improved. And the stability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to buffer piston technical field especially, it relates to a kind of piston with gas buffer function. BACKGROUND

[0002] Buffer piston is a kind of piston component for realizing buffering function in mechanical device. It usually has special structure design, can utilize the characteristics of gas, liquid or spring etc. medium, absorbs and dissipates energy in the process of piston movement, to slow down the movement speed of piston, reduce impact force and vibration, protect other components of mechanical system from damage, improve the stability and reliability of system;

[0003] The commonly used piston at present, when using, due to the compressibility of gas is significantly influenced by temperature;In high-temperature environment, gas expands, the pressure in buffer cavity rises, possibly lead to excessive buffering force, make piston movement unstable even to equipment additional impact;In low-temperature environment, gas contracts, buffering force can be insufficient, cannot effectively play the buffering effect;

[0004] Therefore, we propose a kind of piston with gas buffer function to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of piston with gas buffer function, including the piston pipe for gas piston, the inside of the piston pipe is slidably installed with piston head, the bottom end of the piston pipe is fixedly installed with bottom rubber head, the outside of the piston pipe is fixedly provided with connection flange ring, the top end of the piston pipe is fixedly installed with damping ring.

[0007] Specifically, the same piston rod is slidably penetrated in the top of the damping ring and the piston pipe, to facilitate the sliding of piston rod.

[0008] Specifically, one end of the piston rod in the piston pipe is fixedly installed with rubber joint, one side of the rubber joint is fixedly connected with piston head, can allow piston head to have slight swing and axial displacement within a certain range, reduce additional stress and wear caused by installation error, movement deflection and other factors, also help to improve the reliability of gas buffer function.

[0009] Specifically, bottom of the piston head is fixedly installed with semicircular buffer rubber head, gas can flow more smoothly in the process of piston head movement, reduce gas turbulence and pressure fluctuation, improve the efficiency and stability of gas buffer.

[0010] Specifically, the other end of the piston rod is fixedly installed with counterthrust head, the top of the counterthrust head is fixedly installed with top rubber head.

[0011] Specific, the outer side of the piston rod is sleeved with a buffer spring, one end of the buffer spring is fixedly connected with the bottom of the reverse push head, and the other end of the buffer spring is fixedly connected with the top of the damping ring.

[0012] Specific, the inner side of the piston pipe is provided with a gradually expanding cavity, and the gradually expanding cavity can make the pressure change more gently when the gas is compressed, thereby providing more uniform buffer force.

[0013] Specific, the inner side of the piston pipe is fixedly installed with two guide strips, and the piston head and the rubber joint are slidably connected with the two guide strips.

[0014] Compared with the prior art, the beneficial effects of the utility model lie in: the buffer spring is set to assist and is combined with the gas buffer function, after the gas is buffered, the buffer spring is buffered again, additional buffer force is provided, the buffer effect is further enhanced, and the stability of the equipment is increased. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the piston with the gas buffer function is provided for the utility model;

[0016] Figure 2 A three-dimensional structure schematic view of the buffer spring of the piston with the gas buffer function is provided for the utility model;

[0017] Figure 3 A three-dimensional structure cross-sectional schematic view of the piston with the gas buffer function is provided for the utility model;

[0018] Figure 4 A three-dimensional structure split schematic view of the piston pipe of the piston with the gas buffer function is provided for the utility model;

[0019] Figure 5 A three-dimensional structure split schematic view of the buffer piston of the piston with the gas buffer function is provided for the utility model;

[0020] Figure 6 A cross-sectional schematic view of the gradually expanding cavity of the piston with the gas buffer function is provided for the utility model.

[0021] In the drawing: 1, piston pipe; 2, bottom rubber head; 3, connecting flange ring; 4, piston rod; 5, rubber joint; 6, piston head; 7, semicircular buffer rubber head; 8, guide strip; 9, gradually expanding cavity; 10, reverse push head; 11, top rubber head; 12, buffer spring; 13, damping ring. DETAILED DESCRIPTION

[0022] Reference Figures 1-6 A kind of piston with gas buffer function, including the piston pipe 1 for gas piston, the inner side of piston pipe 1 is slidably installed with piston head 6, the bottom end of piston pipe 1 is fixedly installed with bottom rubber head 2, the outside of piston pipe 1 is fixedly equipped with connecting flange ring 3, the top end of piston pipe 1 is fixedly installed with damping ring 13.

[0023] In the embodiment, the same piston rod 4 is slidably penetrated through the top of damping ring 13 and piston pipe 1, to facilitate the sliding of piston rod 4.

[0024] In the embodiment, one end of piston rod 4 fixedly installed with rubber joint 5 in piston pipe 1, one side of rubber joint 5 is fixedly connected with piston head 6, can allow piston head 6 to have slight swing and axial displacement within a certain range, reduce additional stress and wear caused by installation error, movement deflection and other factors, also help to improve the reliability of gas buffer function.

[0025] In the embodiment, the bottom of piston head 6 is fixedly installed with semicircular buffer rubber head 7, gas can flow more smoothly in the movement process of piston head 6, reduce gas turbulence and pressure fluctuation, improve the efficiency and stability of gas buffer.

[0026] In the embodiment, the other end of piston rod 4 is fixedly installed with counter- thrust head 10, the top of counter- thrust head 10 is fixedly installed with top rubber head 11.

[0027] In the embodiment, the outside of piston rod 4 is equipped with buffer spring 12, one end of buffer spring 12 is fixedly connected with the bottom of counter- thrust head 10, the other end of buffer spring 12 is fixedly connected with the top of damping ring 13.

[0028] In the embodiment, the inner side of piston pipe 1 is provided with gradually expanding cavity 9, gradually expanding buffer cavity can make the pressure change more gentle when gas is compressed, thereby providing more uniform buffer force.

[0029] In the embodiment, two guide strips 8 are fixedly installed in the inner side of piston pipe 1, piston head 6 and rubber joint 5 are slidably connected with two guide strips 8.

[0030] Working principle: when the gas piston is subjected to external force and starts to move, the piston head 6 advances forward and compresses the gas in front of the piston head 6. Because the gas is compressible, its volume decreases and its pressure increases under the extrusion of the piston head 6, so the gas absorbs part of the kinetic energy of the piston head 6, and the movement speed of the piston head 6 gradually slows down, thereby playing a buffering role. Because the bottom of the piston head 6 is fixedly provided with a semicircular buffer rubber head 7, when the gas piston is subjected to impact force, the semicircular buffer rubber head 7 deforms first to absorb part of the energy, and then transmits the remaining impact force to the piston head 6, thereby reducing the instantaneous impact force and effectively protecting the gas piston. The piston head 6 and the piston rod 4 are connected by a rubber joint 5, so that the piston head 6 can have a small swing and displacement within a certain range, reducing additional stress and wear caused by installation errors, movement deflection and other factors. After the gas is buffered, the buffer spring 12 performs secondary buffering to provide additional buffering force, further enhancing the buffering effect and better protecting the equipment.

[0031] The utility model discloses relative to prior art obtained technical progress is: through the buffer spring 12 of setting supplementary, with the gas buffering function combination, when the gas is buffered, the buffer spring 12 carries out secondary buffering, provides additional buffering force, further enhances the buffering effect, thereby reduce the single gas piston when the external environment influence, the buffering effect unstable situation appears, increased the stability of equipment.

Claims

1. A piston having a gas cushion function, characterized by comprising: The utility model provides a piston pipe (1) for gas piston, the inside slide mounting of piston pipe (1) has piston head (6), the bottom end fixed mounting of piston pipe (1) has bottom rubber head (2), the outside fixed sleeve of piston pipe (1) is equipped with the connecting flange ring (3), the top end fixed mounting of piston pipe (1) has the damping ring (13).

2. The piston according to claim 1, wherein The damping ring (13) and the top of piston pipe (1) are slidably penetrated by the same piston rod (4).

3. The piston according to claim 2, wherein One end of the piston rod (4) fixedly installed in the piston pipe (1) is provided with a rubber joint (5), and one side of the rubber joint (5) is fixedly connected with the piston head (6).

4. The piston according to claim 3, wherein The bottom of the piston head (6) is fixedly installed with a semicircular buffer rubber head (7).

5. The gas cushioned piston of claim 4, wherein The other end of the piston rod (4) is fixedly installed with a reverse push head (10), and the top of the reverse push head (10) is fixedly installed with a top rubber head (11).

6. The gas cushioned piston of claim 5, wherein The outside of the piston rod (4) is sleeved with a buffer spring (12), one end of the buffer spring (12) is fixedly connected with the bottom of the reverse push head (10), and the other end of the buffer spring (12) is fixedly connected with the top of the damping ring (13).

7. The gas cushioned piston of claim 6, wherein The inside of the piston pipe (1) is provided with a gradually expanding cavity (9).

8. The piston with gas buffering function according to claim 7, characterized in that, The inside of the piston pipe (1) is fixedly installed with two guide strips (8), and the piston head (6) and the rubber joint (5) are slidably connected with the two guide strips (8).

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