CN215634642U

CN215634642U - Linear speed reduction oil pressure buffer of single cylinder

Info

Publication number: CN215634642U
Application number: CN202121122461.8U
Authority: CN
Inventors: 王东东
Original assignee: C Jac Industrial Co ltd
Current assignee: C Jac Industrial Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-01-25
Anticipated expiration: 2031-05-24

Abstract

The utility model relates to a buffer, in particular to a single-cylinder linear deceleration oil pressure buffer which comprises a cylinder body, a piston rod movably inserted in the cylinder body, a piston arranged on the piston rod and movably inserted in the cylinder body, and a spring arranged in the cylinder body and positioned at one end of the piston, wherein a buffer groove used for communicating cavities at two ends of the piston is arranged on the inner wall of the cylinder body, the buffer groove and the piston are oppositely arranged, and the flow area of the buffer groove is gradually reduced when the piston moves to the bottom of the cylinder body for buffering. The buffer groove with the gradually reduced flow area is formed in the moving area of the piston on the cylinder body of the buffer, so that the linear change of the damping force is realized, the continuous buffer process is realized, the buffer effect is smooth and smooth, the linear speed reduction effect is realized, the inner pipe with the long manufacturing period of the complex manufacturing process is removed, the structure of the buffer is simplified, the manufacturing period of the buffer is greatly shortened, and the rapid delivery is realized.

Description

Linear speed reduction oil pressure buffer of single cylinder

Technical Field

The utility model relates to a buffer, in particular to a single-cylinder linear speed-reducing oil pressure buffer.

Background

The working principle of the existing oil buffer is as follows: when external moving object strikes the piston rod, the piston rod pushes the piston to move towards the tail part, and gradually passes through the oil discharge hole on the inner tube, the piston assembly can oppress the hydraulic oil in the inner tube to be discharged through the oil discharge hole, the oil discharge is fastest when the oil discharge hole is completely opened, and the oil discharge speed is gradually reduced along with the gradual closing of the oil discharge hole, so that the external moving object is gradually reduced to stop from a certain speed. Because the interval problem of oil drain hole, the fluctuation of oil extraction can appear in every time closing an oil drain hole, causes the cushion effect unstable, and the buffering effect is not good. In addition, the inner pipe needs to be subjected to numerical control processing and then to external cooperation processing and then to be subjected to honing, and the manufacturing period of parts is too long. And the rapid production and delivery are not easy to realize.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a single-cylinder linear speed-reducing oil pressure buffer with linearly-changed buffer force, simple structure and short processing period, and the specific technical scheme is as follows:

the utility model provides a single cylinder linear speed reduction hydraulic buffer, includes the cylinder body, the activity is inserted piston rod in the cylinder body, install piston rod and activity are inserted piston in the cylinder body and install in the cylinder body and be located the spring of piston one end, the inner wall of cylinder body is equipped with the dashpot that is used for communicateing the cavity at piston both ends, the dashpot with the piston sets up relatively, the flow area of dashpot reduces gradually when the piston removes to the cylinder body bottom and cushions.

Through adopting above-mentioned technical scheme, when external moving object striking piston rod, the piston rod promotes the piston and removes to the bottom of cylinder body, the inside hydraulic oil of cylinder body passes through the dashpot and flows to there being the pole chamber from no pole chamber, because the flow area of dashpot reduces to no pole chamber gradually, consequently along with the piston diminishes to the flow area of no pole chamber removal dashpot gradually, the damping crescent of production, and be close linear increase, linear speed reduction and buffering have been realized, and simultaneously simple structure, only need process a dashpot, therefore, the steam generator is simple in process, production cycle is short, can realize fast delivery.

Preferably, the piston further comprises a communication groove which is located on the inner wall of the cylinder body when the piston is in a free state and is communicated with the buffer groove, and the length of the communication groove is not less than that of the piston.

By adopting the technical scheme, the method has the advantages that,

the communicating groove is used for realizing communication, the initial damping force is improved, the processing length of the buffer groove is reduced, and the processing difficulty is reduced.

Preferably, the pressure storage cylinder further comprises a guide sleeve and pressure storage cotton, the guide sleeve is fixed in the cylinder body, the piston rod is movably inserted on the guide sleeve, a pressure storage groove is formed in the guide sleeve, and the pressure storage cotton is installed in the pressure storage groove.

The cylinder body is characterized by further comprising a sealing ring, wherein the sealing ring is fixed on the guide sleeve and is positioned between the guide sleeve and the cylinder body.

Further, still include oil blanket, dust ring and dustproof seat, the oil blanket is fixed the one end of uide bushing, and the activity is inserted on the piston rod, dustproof seat is fixed the tip of cylinder body, dust ring activity is inserted on the piston rod, and be located dustproof seat with between the uide bushing.

Compared with the prior art, the utility model has the following beneficial effects:

according to the single-cylinder linear speed reduction hydraulic buffer, the buffer groove with the gradually reduced flow area is formed in the moving area of the piston on the cylinder body, so that the linear change of the damping force is realized, the continuous buffering process is realized, the buffering effect is smooth, the linear speed reduction effect is achieved, the inner pipe with the complicated manufacturing process and the long manufacturing period is removed, the structure of the buffer is simplified, the manufacturing period of the buffer is greatly shortened, and the rapid delivery is realized.

Drawings

FIG. 1 is a cross-sectional view of a single cylinder linear deceleration hydraulic shock absorber;

fig. 2 is a sectional view of the cylinder block.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the single cylinder linear deceleration hydraulic buffer comprises a cylinder body 1, a piston 6, a piston rod 9, a spring 8, a guide sleeve 4, pressure storage cotton 5, a sealing ring 33, an oil seal 32, a dust ring 31 and a dust seat 2.

The piston rod 9 is fixed at one end of the piston 6, the piston 6 and the piston rod 9 are movably inserted into the cylinder body 1, the spring 8 is positioned at the other end of the piston 6, and the piston 6 divides the interior of the cylinder body 1 into a rod cavity with the piston rod 9 and a rodless cavity with the spring 8.

The guide sleeve 4 is fixed inside the cylinder body 1 through the dustproof seat 2, and the sealing ring 33 is fixed on the guide sleeve 4 and positioned between the guide sleeve 4 and the cylinder body 1 for sealing the guide sleeve 4 and the cylinder body 1. The oil seal 32 is fixed on the end of the guide sleeve 4 and is movably inserted on the piston rod 9 for sealing the piston rod 9. The dust ring 31 is mounted on the dust base 2. The guide sleeve 4 is provided with a pressure storage groove communicated with the rod cavity, and the pressure storage cotton 5 is arranged in the pressure storage groove.

Wherein, the inner wall of cylinder body 1 is equipped with the dashpot 12 that is used for communicateing piston 6 both ends and has the pole chamber and no pole chamber, and dashpot 12 sets up with piston 6 is relative, and the flow area of dashpot 12 reduces gradually along with piston 6 removes when buffering to cylinder body 1 bottom. The depth of the buffer groove 12 is from deep to shallow, and the sectional area through which the hydraulic oil passes is also from large to small, so that continuous linear change is formed. The buffer grooves 12 may be circular arc grooves.

When external moving object striking piston rod 9, piston rod 9 promotes piston 6 and removes to the bottom of cylinder body 1, the inside hydraulic oil of cylinder body 1 flows to having the pole chamber from no pole chamber through dashpot 12, because the flow area of dashpot 12 reduces to no pole chamber gradually, consequently along with piston 6 diminishes gradually to the flow area of no pole chamber removal dashpot 12, the damping of production crescent, and be close linear increase, linear speed reduction and buffering have been realized, moreover, the steam generator is simple in structure, only need process a dashpot 12, the operation is simple, the production cycle is short, can realize quick delivery.

A communication groove 11 may be further included, the communication groove 11 being located at an inner wall of the cylinder 1 when the piston 6 is in a free state and communicating with the buffer groove 12, a length of the communication groove 11 being not less than a length of the piston 6.

The communicating groove 11 is used for realizing communication, so that the processing length of the buffer groove 12 is reduced, and the processing difficulty is reduced.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.

Claims

1. The utility model provides a single cylinder linear speed reduction hydraulic buffer, includes cylinder body (1), the activity is inserted piston rod (9) in cylinder body (1), install on piston rod (9) and the activity is inserted piston (6) in cylinder body (1) and install in cylinder body (1) and be located spring (8) of piston (6) one end, its characterized in that, the inner wall of cylinder body (1) is equipped with dashpot (12) that are used for communicateing piston (6) both ends cavity, dashpot (12) with piston (6) set up relatively, the flow area of dashpot (12) reduces gradually when moving to cylinder body (1) bottom along with piston (6) and cushion.

2. The single cylinder linear deceleration hydraulic shock absorber according to claim 1, further comprising a communication groove (11), wherein the communication groove (11) is located at an inner wall of the cylinder (1) when the piston (6) is in a free state, and communicates with the buffer groove (12), and a length of the communication groove (11) is not less than a length of the piston (6).

3. The linear deceleration oil pressure buffer with the single cylinder as claimed in claim 1 or 2, further comprising a guide sleeve (4) and pressure accumulating cotton (5), wherein the guide sleeve (4) is fixed in the cylinder body (1), the piston rod (9) is movably inserted in the guide sleeve (4), the guide sleeve (4) is provided with a pressure accumulating groove, and the pressure accumulating cotton (5) is installed in the pressure accumulating groove.

4. The linear deceleration hydraulic shock absorber with a single cylinder as claimed in claim 3, further comprising a sealing ring (33), wherein the sealing ring (33) is fixed on the guide sleeve (4) and is located between the guide sleeve (4) and the cylinder body (1).

5. The linear speed reduction hydraulic buffer of the single cylinder according to claim 3, further comprising an oil seal (32), a dust ring (31) and a dust seat (2), wherein the oil seal (32) is fixed at one end of the guide sleeve (4) and movably inserted on the piston rod (9), the dust seat (2) is fixed at the end of the cylinder body (1), and the dust ring (31) is movably inserted on the piston rod (9) and located between the dust seat (2) and the guide sleeve (4).