CN216241619U - One-way buffer device of hydraulic cylinder - Google Patents
One-way buffer device of hydraulic cylinder Download PDFInfo
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- CN216241619U CN216241619U CN202123034534.0U CN202123034534U CN216241619U CN 216241619 U CN216241619 U CN 216241619U CN 202123034534 U CN202123034534 U CN 202123034534U CN 216241619 U CN216241619 U CN 216241619U
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Abstract
The utility model relates to the field of hydraulic pressure, and effectively solves the problem that when a piston rod of a hydraulic cylinder is reset, the piston rod collides with the bottom of a cylinder barrel of the hydraulic cylinder to generate collision; a hydraulic cylinder one-way buffer device comprises a left and right hydraulic cylinder, a piston rod of the hydraulic cylinder extends leftwards, a first cylindrical block in the left and right directions is fixed on the right end face of the hydraulic cylinder in a sealing mode, a first blind hole is formed in the left end face of the first cylindrical block, a piston is arranged in the first blind hole, an oil inlet hole and an oil outlet hole are formed in the outer circular surface of the first cylindrical block, and the oil inlet hole and the oil outlet hole penetrate into the first blind hole; the first cylindrical block is provided with a damping hole, one end of the damping hole is communicated with the outer circular surface of the first cylinder, the other end of the damping hole is communicated with the oil inlet hole, and the piston moves to disconnect or connect the damping hole; a through hole is formed in the right end face of the hydraulic cylinder, the through hole is coaxial with the first blind hole, a connecting rod in the left-right direction is fixed on the right end face of the piston in the hydraulic cylinder, and the connecting rod is inserted into the through hole to extrude the piston; the oil outlet is communicated with an oil inlet at the left end of the cylinder barrel of the hydraulic cylinder through an oil pipe.
Description
Technical Field
The utility model relates to the field of hydraulic pressure, in particular to a one-way buffering device of a hydraulic cylinder.
Background
When the piston rod is reset to the bottom of the cylinder barrel of the hydraulic cylinder, the piston rod collides with the bottom of the cylinder barrel of the hydraulic cylinder to generate vibration, the vibration reduces the stability of connection between the hydraulic cylinder and other components, and the vibration also reduces the service life of the hydraulic cylinder.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the one-way buffer device of the hydraulic cylinder, which effectively solves the problem that when a piston rod of the hydraulic cylinder is reset, the piston rod collides with the bottom of a cylinder barrel of the hydraulic cylinder to generate collision.
The technical scheme includes that the hydraulic cylinder one-way buffer device comprises a left-right hydraulic cylinder, a piston rod of the hydraulic cylinder extends leftwards, a left-right first cylindrical block is fixed on the right end face of the hydraulic cylinder in a sealing mode, a first blind hole is formed in the left end face of the first cylindrical block, a piston is arranged in the first blind hole, an oil inlet hole and an oil outlet hole are formed in the outer circular surface of the first cylindrical block, and the oil inlet hole and the oil outlet hole penetrate into the first blind hole;
the first cylindrical block is provided with a damping hole, one end of the damping hole is communicated with the outer circular surface of the first cylinder, the other end of the damping hole is communicated with the oil inlet hole, and the piston moves to disconnect or connect the damping hole;
a through hole is formed in the right end face of the hydraulic cylinder, the through hole is coaxial with the first blind hole, a connecting rod in the left-right direction is fixed on the right end face of the piston in the hydraulic cylinder, and the connecting rod is inserted into the through hole to extrude the piston;
the oil outlet is communicated with an oil inlet at the left end of the cylinder barrel of the hydraulic cylinder through an oil pipe.
A coaxial second cylindrical block is fixed at the right end of the piston in the first blind hole, a first pressure spring is arranged between the second cylindrical block and the bottom of the first blind hole, one end of the first pressure spring is connected with the right end face of the second cylindrical block, and the other end of the first pressure spring is connected with the bottom face of the right end of the first blind hole.
The inner circular surface of the first blind hole is provided with a second blind hole, the second blind hole is communicated with the damping hole in a crossed manner, a round rod is arranged in the second blind hole, the outer circular surface of the round rod is sealed with the second blind hole and can slide, a second pressure spring is arranged between the round rod and the bottom of the second blind hole, the round rod is provided with a radial connecting hole, the round rod moves downwards to enable the damping hole to be communicated through the connecting hole, the round rod moves upwards, and the damping hole is disconnected by the round rod;
there is the constant voltage hole between second blind hole and the first through-hole, and the busy hole of constant voltage hole intercommunication second and first through-hole, the constant voltage hole is not sealed by the round bar all the time.
One end of the round rod, which is positioned in the first blind hole, is spherical.
According to the utility model, when the piston in the hydraulic cylinder moves to the right and reaches the bottom, the damping hole is opened, the pressure of hydraulic oil entering the hydraulic cylinder is reduced, the speed of the piston rod moving to the right is further reduced, and the impact force between the piston rod and the bottom of the cylinder barrel of the hydraulic cylinder is reduced due to the reduction of the speed of the piston rod, so that the vibration is finally reduced.
Drawings
FIG. 1 is a front view of the present invention.
Fig. 2 is a front cross-sectional view of the present invention.
FIG. 3 is an enlarged view of the utility model at A in FIG. 2.
Fig. 4 is an enlarged view of the present invention taken at a point a of fig. 2 with the round bar and the second compression spring removed.
FIG. 5 is a front sectional view showing the damper hole of the present invention in communication.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the hydraulic cylinder comprises a hydraulic cylinder in the left-right direction, a piston rod of the hydraulic cylinder extends leftwards, a first cylindrical block 1 in the left-right direction is fixed on the right end face of the hydraulic cylinder in a sealing manner, a first blind hole 2 is formed in the left end face of the first cylindrical block 1, a piston 3 is arranged in the first blind hole 2, an oil inlet 4 and an oil outlet 5 are arranged on the outer circular surface of the cylindrical block, and the oil inlet 4 and the oil outlet 5 penetrate into the first blind hole 2;
a damping hole 6 is formed in the first cylindrical block 1, one end of the damping hole 6 is communicated with the outer circular surface of the first cylinder, the other end of the damping hole 6 is communicated with the oil inlet 4, and the piston 3 moves to disconnect or connect the damping hole 6;
a through hole 7 is formed in the right end face of the hydraulic cylinder, the through hole 7 is coaxial with the first blind hole 2, a connecting rod 9 in the left-right direction is fixed on the right end face of the piston in the hydraulic cylinder, and the connecting rod 9 is inserted into the through hole 7 to extrude the piston 3;
the oil outlet 5 is communicated with an oil inlet at the left end of the cylinder barrel of the hydraulic cylinder through an oil pipe.
A coaxial second cylindrical block 10 is fixed at the right end of the piston 3 in the first blind hole 2, a first pressure spring 11 is arranged between the second cylindrical block 10 and the bottom of the first blind hole 2, one end of the first pressure spring 11 is connected with the right end face of the second cylindrical block 10, and the other end is connected with the bottom face of the right end of the first blind hole 2; the left end of the piston 3 is pressed to move rightwards, the piston 3 extrudes the first pressure spring 11 through the second cylindrical block 10, the first pressure spring 11 is compressed, and when the pressure applied to the left end of the piston 3 is smaller than the acting force of the first pressure spring 11 on the second cylindrical block 10, the piston 3 moves rightwards.
The inner circular surface of the first blind hole 2 is provided with a second blind hole 12, the second blind hole 12 is communicated with the damping hole 6 in a crossed manner, a round rod 13 is arranged in the second blind hole 12, the outer circular surface of the round rod 13 is sealed with the second blind hole 12 and can slide, a second pressure spring 14 is arranged between the round rod 13 and the bottom of the second blind hole 12, the round rod 13 is provided with a radial connecting hole 157, the round rod 13 moves downwards to enable the damping hole 6 to be communicated through a connecting hole 15, the round rod 13 moves upwards, and the damping hole 6 is disconnected by the round rod 13;
a constant pressure hole 16 is arranged between the second blind hole 12 and the first through hole 7, the constant pressure hole 16 is communicated with the second busy hole and the first through hole 7, and the constant pressure hole 16 is not sealed by the round rod 13 all the time; the second cylindrical block 10 moves rightwards to extrude the top of the round rod 13, the round rod 13 is extruded to move downwards, and the round rod 13 moves downwards to be connected; the second cylindrical block 10 extrudes the circular rod 13 rightwards to enable the circular rod 13 to move downwards, the circular rod 13 moves downwards and extrudes the second pressure spring 14, when the connecting hole 157 is communicated with the damping hole 6, the damping hole 6 is communicated, when the second cylindrical block 10 moves leftwards and does not extrude the circular rod 13 any more, the circular rod 13 moves upwards under the action of the second pressure spring 14, and the damping hole 6 is disconnected by the circular rod 13.
One end of the round rod 13, which is positioned in the first blind hole 2, is spherical; when the second cylindrical block 10 moves rightwards, the second cylindrical block 10 presses the round rod 13 through the spherical end of the round rod 13, so that the round rod 13 slides into the second blind hole 12.
When the hydraulic cylinder works, under the action of the first pressure spring 11, the left end face of the piston 3 in the first blind hole 2 is contacted with the right end face of the hydraulic cylinder, and the damping hole 6 is disconnected by the round rod 13;
hydraulic oil enters from the oil inlet 4, enters the hydraulic cylinder through the first blind hole 2, the oil outlet and the oil pipe to extrude the left side of the piston in the hydraulic cylinder, the piston in the hydraulic cylinder drives the connecting rod 9 to move rightwards, the connecting rod 9 passes through the through hole 7 and generates a rightward extrusion force on the piston 3 in the first blind hole 2, meanwhile, the hydraulic oil extrudes the right end faces of the piston 3 and the second cylindrical block 10 in the first blind hole 2, the left side pressure of the piston 3 in the first blind hole 2 is larger than the right side pressure of the piston 3 and the first cylindrical block 1 due to the same internal pressure of the hydraulic oil, the acting area of the hydraulic oil on the left side of the piston 3 in the hydraulic cylinder is larger than the acting area of the hydraulic oil on the right side of the piston 3 and the first cylindrical block 1 due to the same internal pressure of the hydraulic oil, the piston 3 and the second cylinder in the first blind hole 2 move rightwards together and extrude the first pressure spring 11, the second cylindrical block 10 moves rightwards to be in contact with the circle and extrude the round rod 13, and the pressure of the two ends of the round rod 13 is the same due to the constant pressure hole 16, the round bar 13 is moved downwards and extrudes the second pressure spring 14 when being extruded by the second cylindrical block 10, the round bar 13 slides downwards, the connecting hole 15 on the round bar 13 downwards enables the damping hole 6 to be communicated, at the moment, a part of hydraulic oil entering the oil inlet flows out of the damping hole 6, then the flow of the hydraulic oil entering the first blind hole 2 is reduced, the pressure acting on the left end surface of the piston 3 in the hydraulic cylinder is reduced, the flow of the hydraulic oil entering the hydraulic cylinder is reduced, the moving speed of the piston rod to the right is reduced, the effect of buffering of the conversion rod is achieved, when the piston rod moves to the rightmost end of the cylinder barrel of the hydraulic cylinder, the collision force between the piston rod and the bottom of the cylinder barrel is reduced, and the vibration is reduced.
The novel culture medium has the following remarkable advantages:
according to the hydraulic cylinder, when the piston rod of the hydraulic cylinder moves to the bottom in the right direction, the piston 3 in the first blind hole 2 is extruded, the second cylindrical block 10 extrudes the round rod 13, so that the damping hole 6 is opened, after the damping hole 6 is opened, the pressure of hydraulic oil entering the left side of the piston 3 in the hydraulic cylinder is reduced, the flow is reduced, meanwhile, the pressure of the first pressure spring 11 in the first blind hole 2 to the left side of the right end of the second cylindrical block 10 is increased, the moving speed of the piston rod in the hydraulic cylinder is reduced, the buffering effect is achieved, the speed of the piston rod in the hydraulic cylinder is reduced, when the piston rod moves to the rightmost end, the collision between the piston rod and the cylinder barrel of the hydraulic cylinder is reduced, the generated vibration is reduced, the safety of hydraulic connection is ensured, and the service life is prolonged.
The first cylindrical block 1 is fixed at one end of the hydraulic cylinder, and compared with other devices which achieve the buffering effect by decelerating through a hydraulic valve, the device is convenient to install, small in size and good in effect.
Claims (4)
1. The hydraulic cylinder one-way buffer device is characterized by comprising a hydraulic cylinder in the left and right directions, wherein a piston rod of the hydraulic cylinder extends leftwards, a first cylindrical block (1) in the left and right directions is fixed on the right end face of the hydraulic cylinder in a sealing manner, a first blind hole (2) is formed in the left end face of the first cylindrical block (1), a piston (3) is arranged in the first blind hole (2), an oil inlet hole (4) and an oil outlet hole (5) are formed in the outer circular surface of the first cylindrical block (1), and the oil inlet hole (4) and the oil outlet hole (5) penetrate into the first blind hole (2);
a damping hole (6) is formed in the first cylindrical block (1), one end of the damping hole (6) is communicated with the outer circular surface of the first cylinder, the other end of the damping hole is communicated with the oil inlet hole (4), and the piston (3) moves to enable the damping hole (6) to be disconnected or communicated;
a through hole (7) is formed in the right end face of the hydraulic cylinder, the through hole (7) is coaxial with the first blind hole (2), a connecting rod (9) in the left-right direction is fixed on the right end face of the piston in the hydraulic cylinder, and the connecting rod (9) is inserted into the through hole (7) to extrude the piston (3);
the oil outlet (5) is communicated with an oil inlet at the left end of the cylinder barrel of the hydraulic cylinder through an oil pipe.
2. The one-way buffering device of the hydraulic cylinder according to claim 1, characterized in that a second coaxial cylindrical block (10) is fixed at the right end of the piston (3) in the first blind hole (2), a first pressure spring (11) is arranged between the second cylindrical block (10) and the bottom of the first blind hole (2), one end of the first pressure spring (11) is connected with the right end face of the second cylindrical block (10), and the other end is connected with the bottom face of the right end of the first blind hole (2).
3. The one-way buffering device of the hydraulic cylinder according to claim 1, characterized in that a second blind hole (12) is formed in the inner circular surface of the first blind hole (2), the second blind hole (12) is communicated with the damping hole (6) in a crossed manner, a round rod (13) is arranged in the second blind hole (12), the outer circular surface of the round rod (13) is sealed with the second blind hole (12) and can slide, a second pressure spring (14) is arranged between the round rod (13) and the bottom of the second blind hole (12), a radial connecting hole (15) is formed in the round rod (13), the round rod (13) moves downwards to enable the damping hole (6) to be communicated through the connecting hole (15), the round rod (13) moves upwards, and the damping hole (6) is disconnected by the round rod (13);
there is constant voltage hole (16) between second blind hole (12) and first through-hole (7), and constant voltage hole (16) intercommunication second is busy hole and first through-hole (7), and constant voltage hole (16) are not sealed by round bar (13) all the time.
4. A one-way damping device of a hydraulic cylinder according to claim 3, characterized in that the end of the round rod (13) in the first blind hole (2) is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123034534.0U CN216241619U (en) | 2021-12-06 | 2021-12-06 | One-way buffer device of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123034534.0U CN216241619U (en) | 2021-12-06 | 2021-12-06 | One-way buffer device of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241619U true CN216241619U (en) | 2022-04-08 |
Family
ID=80961509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123034534.0U Active CN216241619U (en) | 2021-12-06 | 2021-12-06 | One-way buffer device of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216241619U (en) |
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2021
- 2021-12-06 CN CN202123034534.0U patent/CN216241619U/en active Active
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