CN117108581A - Self-adaptive buffer cylinder - Google Patents

Abstract

The application discloses a self-adaptive buffer cylinder, which comprises a cylinder barrel, an end cover, a piston and a piston rod, wherein the end cover is arranged on the cylinder barrel; the end cover is provided with an air hole and an air cavity, the piston is provided with a buffer ring, and the end cover is internally provided with a buffer mechanism which comprises a sleeve, a plunger, an elastic piece and an air passage; the cylinder wall of the sleeve is provided with a cylinder wall opening, and the elastic piece is connected to the head end of the plunger; the air passage is communicated with the sleeve and the cylinder barrel; when the buffer ring leaves the air cavity, the plunger seals the opening of the cylinder wall; when the buffer ring enters the air cavity, the plunger self-adaptively opens the opening of the cylinder wall. The self-adaptive buffer air cylinder provided by the application has the advantages that the air pressure in the air passage, the displacement of the plunger, the opening of the cylinder wall and the buffer effect in the air cavity are self-adaptive to the speed of the piston, so that a stable buffer effect can be provided, the rebound of the piston can be avoided, and the movement negligence of the piston can be avoided.

Description

Self-adaptive buffer cylinder

Technical Field

The application relates to the technical field of air cylinders, in particular to a self-adaptive buffer air cylinder.

Background

The cylinder is a telescopic driving mechanism commonly used in the field of machining. The cylinder comprises a cylinder barrel, an end cover, a piston and a piston rod. The end cover is arranged at the end part of the cylinder barrel and is provided with an air vent which is connected with external air supply equipment. The piston is slidably mounted in the cylinder, one end of the piston rod is connected to the piston, and the other end extends out of the end cap to provide a telescopic driving action.

In order to avoid hard contact with the end cap as the piston moves, it is necessary to provide cushioning for the piston. In the prior art, the air pressure for supplying air to the air cylinder is monitored to be used as pressure feedback to be used as a feedback point for adjusting the opening of the buffer throttling loop. However, using the supply air pressure as the feedback pressure, the current state of the piston cannot be accurately fed back.

In view of the above, it is necessary to provide an adaptive cushion cylinder capable of automatically adjusting cushion according to the state of a piston.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provides a self-adaptive buffer cylinder capable of automatically adjusting buffer according to the state of a piston.

The technical scheme of the application provides a self-adaptive buffer cylinder which comprises a cylinder barrel, an end cover arranged at the end part of the cylinder barrel, a piston connected with the cylinder barrel in a sliding manner and a piston rod connected with the piston;

the end cover is provided with an air hole, an air cavity is formed in the end cover, and a buffer ring capable of entering and exiting the air cavity is arranged on one side of the piston facing the end cover;

the outer side of the end cover, which is positioned in the air cavity, is provided with a buffer mechanism, and the buffer mechanism comprises a sleeve, a plunger, an elastic piece and an air passage;

the sleeve is fixedly arranged in the end cover, and a cylinder wall opening communicated with the air cavity is formed in the cylinder wall of the sleeve;

the plunger is slidably assembled in the sleeve, the length of the plunger is larger than that of the opening of the cylinder wall, the tail end of the plunger faces the piston, and the elastic piece is connected to the head end of the plunger;

the air passage is communicated with the sleeve and the cylinder barrel, and an air outlet of the air passage faces the tail end of the plunger;

when the buffer ring leaves the air cavity, the plunger seals the opening of the cylinder wall under the action of the elastic piece;

when the buffer ring enters the air cavity, the plunger is self-adaptively opened to open the opening of the cylinder wall under the action of air pressure.

In one optional technical scheme, the area of the air outlet is smaller than the area of the tail end of the plunger;

when the plunger is in an initial state, the plunger closes the opening of the cylinder wall and blocks the air outlet.

In one optional technical scheme, the opening of the cylinder wall is in a strip shape, and the opening of the hole wall is parallel to the central axis of the piston rod.

In one optional technical scheme, the cylinder wall notch is arranged at the tail part of the cylinder wall of the sleeve.

In one alternative, an adjusting member is mounted at the head end of the sleeve, the adjusting member being capable of adjusting position along the axial direction of the sleeve;

the elastic member is connected between the adjusting member and the head end of the plunger.

In one alternative, the adjusting member has external threads, and the central bore of the head end of the sleeve has internal threads;

the adjusting piece is in threaded connection with the head end of the sleeve.

In one alternative, a sealing ring for sealing with the buffer ring is arranged on the cavity wall of the air cavity.

In one optional technical scheme, a mounting hole is formed in the end cover, and the air outlet of the air channel is positioned on the bottom of the mounting hole;

the hole wall of the mounting hole is provided with a hole wall opening communicated with the air cavity;

the sleeve is fixedly arranged in the mounting hole, and the opening of the wall of the cylinder is communicated with the opening of the hole wall;

when the plunger is in an initial state, the tail end of the plunger is in contact with the hole bottom.

In one optional technical scheme, the length of the hole wall opening is larger than that of the cylinder wall opening.

In one optional technical scheme, the end cover comprises a front end cover and a rear end cover, and the piston rod penetrates out of the front end cover;

the front end cover and the rear end cover are respectively provided with the air cavity and the buffer mechanism;

the front side and the rear side of the piston are respectively provided with the buffer rings;

the buffer ring at the front side of the piston is sleeved on the piston rod.

By adopting the technical scheme, the method has the following beneficial effects:

according to the self-adaptive buffer cylinder provided by the application, along with the movement of the piston, when the buffer ring enters the air cavity, the gas in the cylinder can enter the sleeve to jack the plunger, the plunger self-adaptively opens the opening of the cylinder wall, and the gas enters the air cavity. In the process, if the moving speed of the piston is relatively high, the gas in the air passage is relatively high, the acting force of the air pressure on the plunger is relatively high, the displacement of the plunger is relatively high, the opening of the cylinder wall is relatively high, the gas entering the air cavity is relatively high, and the buffering effect in the air cavity is relatively high; if the moving speed of the piston is relatively slow, the gas in the air passage is relatively less, the acting force of the air pressure on the plunger is relatively less, the displacement of the plunger is relatively less, the opening of the cylinder wall is relatively less, the gas entering the air cavity is relatively less, and the buffering effect in the air cavity is relatively less. Therefore, the air pressure in the air passage, the displacement of the plunger, the opening of the cylinder wall and the buffering effect in the air cavity are self-adaptive to the speed of the piston, so that a stable buffering effect can be provided, the rebound of the piston can be avoided, and the movement negligence of the piston can be avoided.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

fig. 1 is a perspective view of an adaptive buffer cylinder according to an embodiment of the present application at a first view angle;

fig. 2 is a perspective view of an adaptive buffer cylinder according to an embodiment of the present application at a second view angle;

FIG. 3 is a cross-sectional view of an adaptive cushion cylinder according to an embodiment of the present application taken along an axial direction;

FIG. 4 is an exploded view of the sleeve, plunger, resilient member and adjustment member of the cushioning mechanism;

FIG. 5 is a cross-sectional view of the rear end cap;

FIG. 6 is a cross-sectional view of the rear end cap with a cushioning mechanism installed therein;

FIG. 7 is a cross-sectional view of the front end cap;

FIG. 8 is a cross-sectional view of the front end cap with a cushioning mechanism installed therein;

FIG. 9 is a perspective view of the piston, piston rod and buffer ring;

fig. 10 is a cross-sectional view of the piston, piston rod and buffer ring.

Detailed Description

Specific embodiments of the present application will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 10, an adaptive buffer cylinder according to an embodiment of the present application includes a cylinder 1, an end cap 2 installed at an end of the cylinder 1, a piston 3 slidably coupled to the cylinder 1, and a piston rod 4 coupled to the piston 3.

The end cover 2 is provided with an air hole 24, the end cover 2 is provided with an air cavity 23, and the side of the piston 3 facing the end cover 2 is provided with a buffer ring 5 capable of entering and exiting the air cavity 23.

The end cap 2 has a cushioning mechanism 6 located outside the air chamber 23, the cushioning mechanism 6 comprising a sleeve 61, a plunger 62, an elastic member 63 and an air passage 65.

The sleeve 61 is fixedly arranged in the end cover 2, and a cylinder wall opening 611 communicated with the air cavity 23 is formed in the cylinder wall of the sleeve 61.

The plunger 62 is slidably mounted in the sleeve 61, the length of the plunger 62 is longer than the length of the opening 611 of the cylinder wall, the tail end of the plunger 62 faces the piston 3, and the elastic member 63 is attached to the head end of the plunger 62.

The air passage 65 communicates the sleeve 61 and the cylinder tube 1, and an air outlet 652 of the air passage 65 faces the trailing end of the plunger 62.

When the buffer ring 5 leaves the air cavity 23, the plunger 62 seals the cylinder wall gap 611 under the action of the elastic member 63.

When the buffer ring 5 enters the air cavity 23, the plunger 62 self-adaptively opens the cylinder wall gap 611 under the action of air pressure.

The self-adaptive buffer cylinder provided by the application comprises a cylinder barrel 1, an end cover 2, a piston 3, a piston rod 4, a buffer ring 5 and a buffer mechanism 6.

The front end and the rear end of the cylinder barrel 1 are respectively provided with an end cover 2, the end cover 2 at the front end is a front end cover 21, and the end cover 2 at the rear end is a rear end cover 22.

A piston 3 is fitted in the cylinder 1, which is slidable between two end caps 2. The rear end of the piston rod 4 is connected to the piston 2, and the front end thereof extends out of the front end cap 21.

The end cover 2 is provided with an air cavity 23, the end cover 2 is provided with an air hole 24, and the air hole 24 is communicated with the air cavity 23 for supplying air or exhausting air.

When the air holes 24 in the rear cover 22 are in air, the piston 3 is pushed to move forward, and the air holes 24 in the front cover 21 are out of air. When the air holes 24 on the front cover 21 are filled with air, the piston 3 is pushed to move backward, and the air holes 24 on the rear cover 22 are exhausted.

In order to provide cushioning for the piston 3 when it is close to the end cap 2, a cushioning ring 5 is provided on the piston 3, the cushioning ring 5 being movable into and out of the air chamber 23 to block the cylinder 1 and the air chamber 23, while a cushioning mechanism 6 is provided on the end cap 2. After the buffer ring 5 enters the air cavity 23, the air in the air cavity 23 acts against the buffer ring 5 to play a role in buffering.

The front end cover 21 and/or the rear end cover 22 are provided with a damper mechanism 6, and the front side and/or the rear side of the piston 3 are provided with a damper ring 5, respectively, as needed.

The damping mechanism 6 includes a sleeve 61, a plunger 62, an elastic member 63, and an air passage 65.

The sleeve 61 is fixedly mounted in the end cap 2 by means of screws. The wall of the sleeve 61 is provided with a wall opening 611, and the wall opening 611 is communicated with the air cavity 23. The plunger 62 is fitted in the sleeve 61 with a clearance, which is slidable in the sleeve 61. The tail end of the plunger 62 faces the piston 3, and an elastic member 63 is attached to the head end of the plunger 62. The elastic member 63 may be a spring, a leaf spring, or the like, for driving the plunger 62 to move toward the piston 3 or the cylinder 1 side. The air passage 65 communicates the sleeve 61 and the cylinder tube 1, an air inlet 651 of the air passage 65 is positioned on the end face of the end cover 2 facing the piston 3 side, an air outlet 652 of the air passage 65 communicates with the tail end of the sleeve 61, and the air outlet 652 faces the tail end of the plunger 62. Thus, when a certain amount of gas is discharged from the gas outlet 652, if the force is greater than that of the elastic member 63, the plunger 62 is driven toward the head end of the sleeve 61.

The head end of the sleeve or plunger in the present application refers to the end remote from the piston, and the tail end of the sleeve or plunger refers to the end toward the piston.

The length of the plunger 62 is greater than the length of the barrel wall gap 611. When the plunger 62 is in the initial state, the plunger 62 may close the barrel wall gap 611. After the plunger 62 is forced to move to compress the elastic member 63, the plunger 62 moves to open the cylinder wall gap 611. The opening of the cylinder wall gap 611 is controlled by the movement amount of the plunger 62, the movement amount of the plunger 62 is controlled by the air pressure in the air passage 65, and the air pressure in the air passage 65 is controlled by the movement speed of the piston 3, so that the opening of the cylinder wall gap 611 can be adapted to the movement speed of the piston 3.

When the buffer ring 5 leaves the air cavity 23, the plunger 62 is in an initial state, and under the action of the elastic member 63, the plunger 62 seals the opening 611 of the cylinder wall.

When the buffer ring 5 moves along with the piston 3 and enters the air cavity 23, the opening of the air cavity 23 communicated with the cylinder barrel 1 is closed by the buffer ring 5, air mainly enters the sleeve 61 through the air passage 5, air discharged from the air outlet 652 directly acts on the tail end of the plunger 62, the plunger 62 moves towards the head end of the sleeve 61 under the action of air pressure, the cylinder wall notch 611 is opened in a self-adaptive mode, the air enters the air cavity 63, and then the air is discharged through the air hole 64. In this process, if the moving speed of the piston 3 is relatively high, the gas entering the air channel 65 is relatively high, the acting force of the air pressure on the plunger 62 is relatively high, the displacement of the plunger 62 is relatively high, the opening of the opening 611 of the cylinder wall is relatively high, the gas entering the air cavity 63 is relatively high, and the buffering effect in the air cavity 63 is relatively high; if the moving speed of the piston 3 is relatively slow, the gas entering the air channel 65 is relatively less, the acting force of the air pressure on the plunger 62 is relatively less, the displacement of the plunger 62 is relatively less, the opening of the cylinder wall notch 611 is relatively less, the gas entering the air cavity 63 is relatively less, and the buffering effect in the air cavity 63 is relatively less. In this way, the gas pressure in the air channel 65, the displacement of the plunger 62, the opening of the opening 611 of the cylinder wall and the buffer effect in the air cavity 63 are all self-adaptive to the speed of the piston 3, so that a stable buffer effect can be provided, rebound of the piston 3 can be avoided, and the movement negligence of the piston 3 can be avoided.

In one embodiment, as shown in fig. 5-6, the area of the air outlet 652 is smaller than the area of the trailing end of the plunger 62. When the plunger 62 is in the initial state, the plunger 62 closes the cylinder wall gap 611 and blocks the air outlet 652.

That is, the tail end of the plunger 62 can cover the air outlet 652, the air outlet 652 faces the tail end of the plunger 62, the tail end of the plunger 62 can be directly acted when the air outlet 652 is exhausted, and the tail end of the plunger 62 blocks the air outlet 652 when the plunger 62 is in the initial state, so that the plunger 62 can be pushed by air pressure.

In one embodiment, as shown in fig. 4, the opening 611 of the cylinder wall is in a strip shape, the opening 251 of the hole wall is parallel to the central axis of the piston rod 4, and the opening of the opening 611 of the cylinder wall can be directly controlled by moving the plunger 62 along the axial direction.

In one embodiment, as shown in FIG. 4, a barrel wall notch 611 is provided in the rear of the barrel wall of the sleeve 61. The tail end of the plunger 62 is positioned in the tail end opening of the sleeve 61, the cylinder wall notch 611 is positioned at the tail end of the cylinder wall and is communicated with the tail end opening of the sleeve 61, and the cylinder wall notch 611 is opened only when the plunger 62 moves towards the head end, so that the sensitivity is high.

In one embodiment, as shown in fig. 3-4 and 6-8, the head end of the sleeve 61 is fitted with an adjustment member 64, the adjustment member 64 being capable of adjusting position along the axial direction of the sleeve 61. The elastic member 63 is connected between the regulating member 64 and the head end of the plunger 62.

The plunger 62 is controlled to start the required pressure by adjusting the position of the head end of the sleeve 61 of the adjusting member 64 to adjust the pre-tightening force of the elastic member 63.

In one embodiment, the adjustment member 64 has external threads and the central bore of the head end of the sleeve 61 has internal threads. The adjustment member 64 is threadedly coupled to the head end of the sleeve 61. The adjustment member 64 has external threads. The head end of the central bore of the sleeve 61 has an internal thread and the adjusting member 64 is threadedly coupled in the head end of the central bore of the sleeve 61. The position of the adjusting member 64 at the head end of the sleeve 61 can be adjusted by rotation, facilitating adjustment. The adjustment member 64 may be an adjustment screw.

In one embodiment, as shown in fig. 4-8, the adjustment member 64 seals with the sleeve 61, creating a plenum 613 between the adjustment member 64 and the head end of the plunger 62. The wall of the sleeve 61 has breathing holes 612 communicating with the air chamber 613. A breathing hole 612 is located between the regulator 64 and the plunger 62. The breathing holes 612 are in communication with the air chamber 23.

When the elastic member 63 stretches, the gas in the air chamber 23 enters the air chamber 613 through the breathing hole 612, and when the elastic member 63 is compressed, the gas in the air chamber 613 is discharged into the air chamber 23, and the air chamber 613 and the air chamber 23 realize gas circulation, so that the influence on the movement of the plunger 62 due to no discharge of the gas in the air chamber 613 is avoided.

In one embodiment, as shown in fig. 5-8, a sealing ring 26 for sealing with the buffer ring 5 is arranged on the cavity wall of the air cavity 23, after the buffer ring 5 enters the air cavity 23, the buffer ring 5 is sealed by the sealing ring 26, so that the air in the cylinder barrel 1 mainly flows through the air channel 65, and the air in the air cavity 23 cannot seep out from a gap between the buffer ring 5 and the cavity wall of the air cavity 23, thereby being beneficial to maintaining the buffer effect of the air cavity 23.

In one embodiment, as shown in fig. 5-8, the end cap 2 is provided with a mounting hole 25, and the air outlet 652 of the air channel 65 is positioned at the bottom of the mounting hole 25.

The hole wall of the mounting hole 25 is provided with a hole wall opening 251 communicated with the air cavity 23.

Sleeve 61 is fixedly mounted in mounting hole 25, and wall opening 611 communicates with hole wall opening 251.

When the plunger 62 is in the initial state, the trailing end of the plunger 62 contacts the bottom of the hole.

In this embodiment, a mounting hole 25 is provided in the end cap 2 outside the air chamber 23, the mounting hole 25 being parallel to the central axis of the cylinder 1. The opening of the mounting bore 25 is located on the end face of the end cap 2 facing away from the piston 3. That is, the aperture of the mounting hole 25 of the front cover 21 is located on the front end surface of the front cover 21, and the aperture of the mounting hole 25 of the rear cover 22 is located on the rear end surface of the rear cover 22. The bottom of the mounting hole 25 is located between the front and rear end surfaces of the end cap 2, and the bottom of the mounting hole 25 faces the piston 3 groove or the cylinder tube 1 side.

The air outlet 652 of the air duct 65 is located at the bottom of the mounting hole 25. The hole wall of the mounting hole 25 is provided with a hole wall opening 251, and the hole wall opening 251 is communicated with the air cavity 23. The sleeve 61 is fixedly installed in the installation hole 25 through a screw, the wall notch 611 is communicated with the hole wall notch 251, and gas exhausted from the wall notch 611 enters the air cavity 23 through the hole wall notch 251. When the plunger 62 is in the initial state, the tail end of the plunger 62 contacts the bottom of the hole, sealing the air outlet 652, and the bottom of the hole also limits the plunger 62.

In one embodiment, shown in fig. 5-8, the length of the aperture wall gap 251 is greater than the length of the barrel wall gap 611 in the axial direction along the sleeve 61. The wall notch 611 is located between two ends of the hole wall notch 251, so that when the wall notch 611 is opened at any position, gas exhausted from the wall notch 611 can enter the air cavity 23 through the hole wall notch 251.

In one embodiment, as shown in fig. 5 to 8, communication holes 252 are provided in the wall of the mounting hole 25 at positions corresponding to the breathing holes 612. After the sleeve 61 is in place, the breathing holes 612 are aligned with the communication holes 252, and the communication holes 252 communicate the air chamber 23 with the breathing holes 612.

In one embodiment, as shown in fig. 1-10, the end cap 2 includes a front end cap 21 and a rear end cap 22, with the piston rod 4 extending out of the front end cap 21.

An air cavity 23 and a buffer mechanism 6 are respectively arranged in the front end cover 21 and the rear end cover 22.

The front and rear sides of the piston 3 are provided with buffer rings 5, respectively.

A buffer ring 5 on the front side of the piston 3 is fitted over the piston rod 4.

In the present embodiment, the front end cover 21 is an end cover 2 attached to the front end of the cylinder tube 1, and the rear end cover 22 is an end cover 2 attached to the rear end of the cylinder tube 1. The front end cover 21 and the rear end cover 22 are respectively provided with an air cavity 23 and a buffer mechanism 6, and the front end cover 21 and the rear end cover 22 are respectively provided with air holes 24. Correspondingly, the front side and the rear side of the piston 3 are respectively provided with a buffer ring 5, the buffer ring 5 at the rear side of the piston 3 is suspended, and the buffer ring 5 at the front side of the piston 3 is sleeved on the piston rod 4.

So arranged, when the piston 3 moves towards the front end cover 21, the air cavity 23 in the front end cover 21 and the buffer mechanism 6 can cooperate to provide self-adaptive buffer; as the piston 3 moves towards the rear end cap 22, eventually an adaptive damping may be provided by the air chamber 23 in the rear end cap 22, the damping mechanism 6, etc.

The above technical schemes can be combined according to the need to achieve the best technical effect.

What has been described above is merely illustrative of the principles and preferred embodiments of the present application. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the application and should also be considered as the scope of protection of the present application.

Claims (10)

1. The self-adaptive buffer cylinder is characterized by comprising a cylinder barrel, an end cover arranged at the end part of the cylinder barrel, a piston connected with the cylinder barrel in a sliding manner and a piston rod connected with the piston;

the end cover is provided with an air hole, an air cavity is formed in the end cover, and a buffer ring capable of entering and exiting the air cavity is arranged on one side of the piston facing the end cover;

the outer side of the end cover, which is positioned in the air cavity, is provided with a buffer mechanism, and the buffer mechanism comprises a sleeve, a plunger, an elastic piece and an air passage;

the sleeve is fixedly arranged in the end cover, and a cylinder wall opening communicated with the air cavity is formed in the cylinder wall of the sleeve;

the plunger is slidably assembled in the sleeve, the length of the plunger is larger than that of the opening of the cylinder wall, the tail end of the plunger faces the piston, and the elastic piece is connected to the head end of the plunger;

the air passage is communicated with the sleeve and the cylinder barrel, and an air outlet of the air passage faces the tail end of the plunger;

when the buffer ring leaves the air cavity, the plunger seals the opening of the cylinder wall under the action of the elastic piece;

when the buffer ring enters the air cavity, the plunger is self-adaptively opened to open the opening of the cylinder wall under the action of air pressure.

2. The adaptive cushion cylinder according to claim 1, wherein an area of the air outlet is smaller than an area of a trailing end of the plunger;

when the plunger is in an initial state, the plunger closes the opening of the cylinder wall and blocks the air outlet.

3. The adaptive cushion cylinder of claim 1, wherein the cylinder wall opening is elongated and the bore wall opening is parallel to a central axis of the piston rod.

4. The adaptive cushion cylinder of claim 1, wherein the cylinder wall opening is provided at a tail of the cylinder wall of the sleeve.

5. The adaptive cushion cylinder according to claim 1, wherein an adjustment member is mounted to a head end of the sleeve, the adjustment member being capable of adjusting position along an axial direction of the sleeve;

the elastic member is connected between the adjusting member and the head end of the plunger.

6. The adaptive cushion cylinder according to claim 5, wherein the adjustment member has external threads thereon and the central bore of the head end of the sleeve has internal threads therein;

the adjusting piece is in threaded connection with the head end of the sleeve.

7. The adaptive cushion cylinder according to claim 1, wherein a sealing ring for sealing with the cushion ring is provided on a cavity wall of the air cavity.

8. The adaptive buffer cylinder according to claim 1, wherein a mounting hole is formed in the end cover, and the air outlet of the air passage is positioned on the bottom of the mounting hole;

the hole wall of the mounting hole is provided with a hole wall opening communicated with the air cavity;

the sleeve is fixedly arranged in the mounting hole, and the opening of the wall of the cylinder is communicated with the opening of the hole wall;

when the plunger is in an initial state, the tail end of the plunger is in contact with the hole bottom.

9. The adaptive cushion cylinder of claim 8, wherein the length of the bore wall opening is greater than the length of the bore wall opening.

10. An adaptive buffer cylinder according to any one of claims 1 to 9, characterized in that,

the end cover comprises a front end cover and a rear end cover, and the piston rod penetrates out of the front end cover;

the front end cover and the rear end cover are respectively provided with the air cavity and the buffer mechanism;

the front side and the rear side of the piston are respectively provided with the buffer rings;

the buffer ring at the front side of the piston is sleeved on the piston rod.