CN210599666U

CN210599666U - Shock-absorbing hydraulic oil cylinder

Info

Publication number: CN210599666U
Application number: CN201921468982.1U
Authority: CN
Inventors: 蒋英; 张静云
Original assignee: Hunan Tianhong Hydraulic Machinery Co Ltd
Current assignee: Hunan Tianhong Hydraulic Machinery Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-05-22
Anticipated expiration: 2029-09-05

Abstract

The utility model provides a bradyseism hydraulic cylinder relates to hydraulic cylinder technical field, a bradyseism hydraulic cylinder, which comprises a cylinder body, set up the hydraulic pressure chamber in the cylinder body, the upper end intercommunication in hydraulic pressure chamber is provided with the oil pocket, the lower extreme intercommunication in hydraulic pressure chamber is provided with the oil pocket down, sliding connection has hydraulic piston in the hydraulic pressure chamber, hydraulic piston's last lateral wall fixedly connected with hydraulic stem, hydraulic piston's one end is kept away from to the hydraulic stem runs through the cylinder body and extends to the outside of cylinder body, is located the cylinder body outside the one end fixedly connected with mounting flange of hydraulic stem. The utility model discloses in, adopt the setting of bradyseism device, realize controlling the speed of the hydraulic oil in the hydraulic pressure chamber to arranging oil in the bradyseism device through the control choke valve to control the effect of bradyseism, in addition, through the setting of bradyseism room, spring, slider, connecting rod, bradyseism piston, will come from the surface of the bradyseism piston that the vibrations pressure in the hydraulic pressure chamber passes through the hydraulic oil conduction in communicating pipe.

Description

Shock-absorbing hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder technical field especially relates to a bradyseism hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The hydraulic cylinder has a simple structure and reliable work, when the hydraulic cylinder is used for realizing reciprocating motion, a speed reducer can be omitted, no transmission gap exists, and the hydraulic cylinder is stable in motion, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines, the output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the effective area and the two sides of the piston, a mechanism with certain mass is driven by the hydraulic cylinder in the hydraulic system, when the hydraulic cylinder moves to the stroke end point, the hydraulic cylinder has large kinetic energy and needs to be cushioned, the driven mechanism is prevented from being damaged due to large vibration, and the hydraulic cylinder needs to have the cushioning capacity.

Traditional hydraulic cylinder is usually through when the piston moves the terminal preceding one end distance, get up the hydraulic oil shutoff of oil extraction chamber, force hydraulic oil to discharge from gap or throttle aperture, increase oil extraction resistance, slow down the rate of motion of piston, certain buffering effect has, but when the mechanism of some big masses is driven in needs, traditional buffer still has the not enough characteristics of buffering effect in the effect of bradyseism, consequently need the better bradyseism hydraulic cylinder of buffering effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a cushioning hydraulic oil cylinder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a bradyseism hydraulic cylinder, includes the cylinder body, set up the hydraulic pressure chamber in the cylinder body, the upper end intercommunication in hydraulic pressure chamber is provided with the oil pocket, the lower extreme intercommunication in hydraulic pressure chamber is provided with the oil pocket down, sliding connection has hydraulic piston in the hydraulic pressure chamber, hydraulic piston's last lateral wall fixedly connected with hydraulic stem, the one end that hydraulic piston was kept away from to the hydraulic stem runs through the cylinder body and extends to the outside of cylinder body, is located the cylinder body outside the one end fixedly connected with mounting flange of hydraulic stem, one side lateral wall intercommunication of oil pocket is provided with the bradyseism device down, one side lateral wall intercommunication of going up the oil pocket sets up first oil pipe of advancing, one side lateral wall intercommunication of oil pocket is provided with.

Preferably, a buffer rubber sleeve is sleeved on the side wall of one end, close to the hydraulic piston, of the hydraulic rod, and the outer edge opening of one end, far away from the hydraulic piston, of the buffer rubber sleeve is arranged on an inclined plane in an inclined mode.

Preferably, a guide ring and a gurley seal ring are arranged on the outer circumferential side wall of the hydraulic piston.

Preferably, the bottom wall of the lower oil cavity is fixedly connected with a buffer rubber column, the side wall of one end, away from the hydraulic rod, of the hydraulic piston is fixedly connected with a blocking column, and one end, away from the hydraulic piston, of the blocking column is provided with a rubber pad.

Preferably, the bottom of the cushioning device is fixedly connected with a fixed support base, and the fixed support base is fixedly connected with a mounting seat with the bottom of the cylinder body.

Preferably, the cushioning device includes communicating pipe, the one end and the lower oil pocket intercommunication setting of communicating pipe, the one end intercommunication that the lower oil pocket was kept away from to communicating pipe is provided with the cushioning room, sliding connection has the slider in the cushioning room, the one end lateral wall fixedly connected with spring of communicating pipe is kept away from to the slider, the one end lateral wall fixedly connected with connecting rod of spring is kept away from to the slider, the one end fixedly connected with cushioning piston of slider is kept away from to the connecting rod, cushioning piston set up in communicating pipe and with the inner wall sliding connection of communicating pipe, communicating pipe is close to and is provided with the choke valve on one side lateral wall of lower oil pocket, is located between choke valve and the cushioning piston the lateral wall intercommunication of communicating pipe.

Advantageous effects

1. The utility model discloses in, adopt the setting of bradyseism device, realize the speed of the hydraulic oil of controlling in the hydraulic pressure chamber through the control choke valve to oil extraction in the bradyseism device, thereby control the effect of bradyseism, in addition, through the bradyseism room, a spring, the slider, the connecting rod, the setting of bradyseism piston, will come from the surface of bradyseism piston in the communicating pipe is given through the hydraulic oil conduction to vibrations pressure in the hydraulic pressure chamber, the bradyseism piston passes through connecting rod and slider transmission with pressure and gives the spring, the spring is after receiving pressure, the compression produces elastic deformation, will cushion the linear reduction of energy and change the potential energy in the spring, and lose partly energy in the conversion of spring energy, thereby the slow release of vibrations energy through the two-stage bradyseism effect of the bradyseism of choke valve accuse oil and spring, thereby make the bradyseism effect better.

2. The utility model discloses in, adopt the fender post, the setting of cushion rubber post and cushion rubber sleeve, realize the hydraulic stem at flexible in-process, when hydraulic piston reaches the terminal of stroke, through the collision of fender post and cushion rubber post and the collision of the inner wall on cushion rubber sleeve and cylinder body top with the energy conversion of vibrations rubber deformation produced elastic potential energy, thereby also can play the effect of buffering absorbing, prevent simultaneously that hydraulic piston and cylinder body internal direct impact from producing the damage, influence the use of buffering hydraulic cylinder.

Drawings

Fig. 1 is a schematic perspective view of a cushioning hydraulic cylinder according to the present invention;

fig. 2 is a schematic front sectional view of a shock absorption hydraulic cylinder according to the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Illustration of the drawings:

1. a cylinder body; 2. a hydraulic chamber; 3. an upper oil chamber; 4. a lower oil chamber; 5. a hydraulic piston; 6. a hydraulic lever; 7. installing a flange; 8. a cushioning device; 81. a communicating pipe; 82. a cushioning chamber; 83. a slider; 84. a spring; 85. a connecting rod; 86. a cushioning piston; 87. a throttle valve; 88. discharging an oil pipe; 9. a first oil inlet and outlet pipe; 10. a second oil inlet and outlet pipe; 11. a buffer rubber sleeve; 12. a guide ring; 13. a Gelai seal ring; 14. a cushion rubber column; 15. a blocking post; 16. fixing the supporting seat; 17. and (7) mounting a seat.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-3, a shock absorption hydraulic cylinder comprises a cylinder body 1, a hydraulic cavity 2 is arranged in the cylinder body 1, an upper oil cavity 3 is arranged at the upper end of the hydraulic cavity 2 in a communicating manner, a lower oil cavity 4 is arranged at the lower end of the hydraulic cavity 2 in a communicating manner, the upper oil cavity 3 and the lower oil cavity 4 are used for injecting hydraulic oil into the hydraulic cavity 2, so that a hydraulic piston 5 can move up and down in the hydraulic cavity 2 to push a hydraulic rod 6 to move, a buffer rubber column 14 is fixedly connected to the bottom wall of the lower oil cavity 4, a blocking column 15 is fixedly connected to the side wall of one end of the hydraulic piston 5 far away from the hydraulic rod 6, a rubber pad is arranged at one end of the blocking column 15 far away from the hydraulic piston 5, the blocking column 15 collides with the buffer rubber column 14 to convert impact force into elastic potential energy of rubber elastic deformation, thereby achieving a shock absorption and buffering, further influencing the service life of the hydraulic oil cylinder, the hydraulic piston 5 is connected in the hydraulic cavity 2 in a sliding way, the outer circumferential side wall of the hydraulic piston 5 is provided with a guide ring 12 and a Gray sealing ring 13, the guide ring 12, also called a support ring, is a part which is used on the piston or piston rod of the hydraulic cylinder or air cylinder and supports the motion of the piston or piston rod, can prevent the piston or piston rod from directly contacting and rubbing with the cylinder body 1 in the motion process, and plays a role of protecting the cylinder body 1 and the piston or piston rod from being damaged, the Gray sealing ring 13 is formed by combining a rubber O-shaped ring and a polytetrafluoroethylene ring, the pressure liquid extrudes the square sealing ring to the maximum extent through the elastic deformation of the O-shaped sealing ring, so that the square sealing ring is tightly attached to the sealing surface to generate higher additional contact stress increased along with the pressure increase of the pressure liquid, and prevents the leakage of, the upper side wall of the hydraulic piston 5 is fixedly connected with a hydraulic rod 6, the side wall of one end of the hydraulic rod 6 close to the hydraulic piston 5 is sleeved with a buffer rubber sleeve 11, the buffer rubber sleeve 11 prevents the hydraulic piston 5 from directly colliding with the upper inner wall of the cylinder body 1 to be damaged, the outer edge of one end of the buffer rubber sleeve 11 far away from the hydraulic piston 5 is arranged in an inclined plane, so that the buffer damping is better, the hydraulic rod 6 is ensured not to shake, one end of the hydraulic rod 6 far away from the hydraulic piston 5 penetrates through the cylinder body 1 and extends to the outside of the cylinder body 1, one end of the hydraulic rod 6 located outside the cylinder body 1 is fixedly connected with a mounting flange 7, one side wall of the lower oil cavity 4 is communicated with a damping device 8, the damping device 8 comprises a communicating pipe 81, one end of the communicating pipe 81 is communicated with the lower oil cavity 4, one end of the communicating pipe 81 far away from the lower oil, the side wall of one end of the sliding block 83 far away from the communicating pipe 81 is fixedly connected with a spring 84, the side wall of one end of the sliding block 83 far away from the spring 84 is fixedly connected with a connecting rod 85, one end of the connecting rod 85 far away from the sliding block 83 is fixedly connected with a cushioning piston 86, the cushioning piston 86 is arranged in the communicating pipe 81 and is in sliding connection with the inner wall of the communicating pipe 81, a throttle valve 87 is arranged on the side wall of one side of the communicating pipe 81 close to the lower oil cavity 4, an oil discharge pipe 88 is arranged on the side wall of the communicating pipe 81 between the throttle valve 87 and the cushioning piston 86 in a communicating mode, the speed of discharging hydraulic oil in the hydraulic cavity 2 to the cushioning device 8 is controlled by controlling the throttle valve 87, so that the cushioning effect is controlled, in addition, through the arrangement of the cushioning chamber 82, the spring 84, the sliding block 83, the connecting rod 85 and the cushioning piston 86, the damping piston 86 transmits the pressure to the spring 84 through the connecting rod 85 and the slider 83, and after the spring 84 receives the pressure, the compression produces an elastic deformation that linearly reduces and converts the damping energy into potential energy in the spring 84, and loses a portion of the energy in the conversion of the spring 84 energy, so that the vibration energy is slowly released through the two-stage cushioning effect of the oil control of the throttle valve 87 and the cushioning of the spring 84, thereby make the cushioning effect better, oil drain pipe 88 is arranged in emitting the hydraulic oil in communicating pipe 81, make hydraulic stem 6 can the return stroke and carry out the cushioning preparation of next time, the bottom fixedly connected with fixed bolster 16 of cushioning device 8, the bottom fixedly connected with mount pad 17 of fixed bolster 16 and cylinder body 1, one side lateral wall intercommunication of last oil pocket 3 sets up first oil pipe 9 that advances, one side lateral wall intercommunication of lower oil pocket 4 is provided with second oil pipe 10 that advances, first oil pipe 9 that advances is used for injecting hydraulic oil to hydraulic pressure chamber 2 with second oil pipe 10 that advances.

The utility model discloses a theory of operation: when the shock absorber is used, the first oil inlet and outlet pipe 9 and the throttle valve 87 on the shock absorber 8 are closed, hydraulic oil is injected into the lower oil cavity 4 through the second oil inlet and outlet pipe 10, the hydraulic piston 5 slides in the hydraulic cavity 2 under the extrusion force of the hydraulic oil and pushes the hydraulic rod 6 to move, so that the mechanism connected to the mounting flange 7 on the hydraulic rod 6 is driven to move, when the stroke of the hydraulic piston 5 reaches the top of the hydraulic cavity 2, the second oil inlet and outlet pipe 10 is closed, the throttle valve 87 on the shock absorber 8 is opened, when shock is generated, the hydraulic rod 6 transmits shock energy to the hydraulic piston 5, the hydraulic piston 5 extrudes the hydraulic oil in the hydraulic cavity 2 to extrude the hydraulic oil into the communicating pipe 81, the shock absorber piston 86 in the communicating pipe 81 is extruded by the extrusion force of the hydraulic oil to move towards the shock absorber 82, so that the connecting rod 85 and the sliding block 83 are pushed to move, so as to extrude the, the vibration energy is converted into the elastic potential energy generated by the deformation of the spring 84, so the vibration energy is buffered to the minimum under the two-stage cushioning effect of the oil control of the throttle valve 87 and the compression deformation of the spring 84, the cushioning effect is further enhanced, the cushioning effect of the cushioning hydraulic oil cylinder is better, the oil discharge pipe 88 is used for discharging the hydraulic oil in the communication pipe 81, the hydraulic rod 6 can return and carry out the next cushioning preparation, the cushion rubber column 14, the blocking column 15 and the cushion rubber sleeve 11 are positioned in the lower oil cavity 4, the guide ring 12 can prevent the hydraulic piston 5 from being directly impacted and contacted with the inner wall of the cylinder body 1 to be damaged, the hydraulic piston 5 is prevented from being directly contacted and rubbed with the cylinder body 1 in the movement process, the function of protecting the cylinder body 1 and the hydraulic piston 5 from being damaged is achieved, the Gelai sealing ring 13 is formed by combining a rubber O-shaped ring and a polytetrafluoroethylene ring, the hydraulic oil starts to extrude the square sealing ring to the maximum extent through the elastic deformation of the O-shaped sealing ring, so that the square sealing ring is tightly attached to the sealing surface to generate higher additional contact stress increased along with the increase of the pressure of the hydraulic oil, and the additional contact stress and the initial contact stress jointly prevent the leakage of the hydraulic oil.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a bradyseism hydraulic cylinder, includes cylinder body (1), its characterized in that: a hydraulic cavity (2) is arranged in the cylinder body (1), the upper end of the hydraulic cavity (2) is communicated with an upper oil cavity (3), a lower oil cavity (4) is communicated with the lower end of the hydraulic cavity (2), a hydraulic piston (5) is connected in the hydraulic cavity (2) in a sliding way, the upper side wall of the hydraulic piston (5) is fixedly connected with a hydraulic rod (6), one end of the hydraulic rod (6) far away from the hydraulic piston (5) penetrates through the cylinder body (1) and extends to the outside of the cylinder body (1), one end of the hydraulic rod (6) positioned outside the cylinder body (1) is fixedly connected with a mounting flange (7), a shock absorption device (8) is communicated with the side wall of one side of the lower oil cavity (4), a first oil inlet and outlet pipe (9) is communicated with the side wall of one side of the upper oil cavity (3), and a second oil inlet and outlet pipe (10) is communicated with the side wall of one side of the lower oil cavity (4).

2. A shock absorbing hydraulic ram according to claim 1 wherein: the hydraulic pressure pole (6) are close to one end lateral wall cover of hydraulic piston (5) and are equipped with buffering rubber sleeve (11), the outer edge mouth of the one end that hydraulic piston (5) were kept away from in buffering rubber sleeve (11) sets up for the inclined plane of slope.

3. A shock absorbing hydraulic ram according to claim 1 wherein: and a guide ring (12) and a Gelai sealing ring (13) are arranged on the outer circumferential side wall of the hydraulic piston (5).

4. A shock absorbing hydraulic ram according to claim 1 wherein: the bottom wall of the lower oil cavity (4) is fixedly connected with a buffer rubber column (14), one end side wall of the hydraulic piston (5), far away from the hydraulic rod (6), is fixedly connected with a blocking column (15), and one end, far away from the hydraulic piston (5), of the blocking column (15) is provided with a rubber pad.

5. A shock absorbing hydraulic ram according to claim 1 wherein: the bottom fixedly connected with fixed bolster (16) of bradyseism device (8), fixed bolster (16) and the bottom fixedly connected with mount pad (17) of cylinder body (1).

6. A shock absorbing hydraulic ram according to claim 1 wherein: bradyseism device (8) are including communicating pipe (81), the one end and the lower oil pocket (4) intercommunication setting of communicating pipe (81), the one end intercommunication that lower oil pocket (4) was kept away from in communicating pipe (81) is provided with bradyseism room (82), sliding connection has slider (83) in bradyseism room (82), the one end lateral wall fixedly connected with spring (84) of communicating pipe (81) are kept away from in slider (83), the one end lateral wall fixedly connected with connecting rod (85) of spring (84) are kept away from in slider (83), the one end fixedly connected with bradyseism piston (86) of slider (83) are kept away from in connecting rod (85), bradyseism piston (86) set up in communicating pipe (81) and with the inner wall sliding connection of communicating pipe (81), be provided with throttle valve (87) on one side lateral wall that communicating pipe (81) are close to lower oil pocket (4), be located between throttle valve (87) and bradyseism piston (86 the lateral wall intercommunication of communicating pipe (81) is 88).