CN210661176U

CN210661176U - Oil buffer

Info

Publication number: CN210661176U
Application number: CN201921729331.3U
Authority: CN
Inventors: 孙树根
Original assignee: Dongguan Tianyou Zhiyun Hardware Technology Co Ltd
Current assignee: Dongguan Tianyou Zhiyun Hardware Technology Co Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-02
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses an oil buffer, including the impact head of coaxial setting in proper order, the piston rod, reset spring and oil pressure jar, the oil pressure jar includes the cylinder cap, the second cylinder body, a bearing, first cylinder body, the cylinder cap is fixed at first cylinder body open end, second cylinder body and bearing are placed inside first cylinder body in proper order, the one end and the first rigid coupling of striking of piston rod, the other end of piston rod is provided with the piston at second cylinder body oil pressure chamber round trip movement, reset spring sets up at the oil pressure chamber of second cylinder body and with piston connection, a bearing, first sealing washer, the cylinder cap is established at the piston rod middle part in proper order, between bearing and the cylinder cap, be provided with first sealing washer and second sealing washer between bearing and the first cylinder body inner wall respectively, bearing outer wall cover is equipped with round pressure accumulation sponge. The utility model discloses a hydraulic oil and reset spring's elasticity compensation makes the striking head receive the striking back, can form soft buffering effect, extension mechanical life according to the kinetic energy change self-adaptation regulation of striking.

Description

Oil buffer

Technical Field

The utility model relates to a buffer technical field, in particular to hydraulic buffer.

Background

The oil buffer is designed for reducing vibration and noise in the operation of the automatic machine, lubricating oil is used for reducing friction force of a moving part of the machine, so that the moving part can still move for a certain distance under the action of inertia after the power for driving the moving part on the machine stops, the moving part can collide with other parts, the moving part can stably stop through the oil buffer, the kinetic energy generated by the moving part is converted into heat energy and released into the atmosphere, the damage caused by the collision of the movement of the mechanical part is reduced, the service life of the machine is prolonged, the maintenance cost is reduced, the structure of the existing oil buffer can be further improved, and the buffering effect of the oil buffer is further optimized.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the present invention is to provide an oil buffer to solve the problems in the prior art.

In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows: a hydraulic buffer comprises an impact head, a piston rod, a return spring and an oil hydraulic cylinder which are coaxially arranged in sequence, the oil hydraulic cylinder comprises a cylinder cover, a second cylinder body, a bearing and a first cylinder body, wherein the cylinder cover is fixed at the opening end of the first cylinder body, the second cylinder body and the bearing are sequentially arranged in the first cylinder body, one end of the piston rod is fixedly connected with the impact head, the other end of the piston rod is provided with a piston which moves back and forth in an oil pressure cavity of the second cylinder body, the reset spring is arranged in the oil pressure cavity of the second cylinder body and is connected with the piston, the bearing, the first sealing ring and the cylinder cover are sequentially sleeved in the middle of the piston rod, a first sealing ring and a second sealing ring are respectively arranged between the bearing and the cylinder cover and between the bearing and the inner wall of the first cylinder body, and a circle of pressure accumulation sponge is sleeved on the outer wall of the bearing.

As a further elaboration of the above technical solution:

in the technical scheme, the front end of the impact head is sleeved with a colloid noise reduction sleeve, the outer wall of the impact head is provided with a clamping groove, and the noise reduction sleeve is provided with an inner convex edge matched with the clamping groove.

In the above technical solution, the second seal ring is an O-shaped seal ring.

In the technical scheme, the outer wall of the bearing is provided with a sponge mounting groove, and the pressure-accumulating sponge is embedded in the sponge mounting groove.

In the above technical scheme, the piston rod is provided with the connector of being connected with the piston, the piston cover is established on the connector, the connector outer wall is provided with the bellying with the piston joint, the end of connector is provided with the separation blade of restriction piston.

In the above technical scheme, the other end of the first cylinder body opposite to the open end is provided with an oil filling hole, the oil filling hole is provided with a fixing screw, and an O-shaped third sealing ring is arranged between the fixing screw and the first cylinder body.

In the above technical scheme, the outer wall interval of first cylinder body is provided with first nut and second nut.

In the above technical solution, the first cylinder body and the second cylinder body are both cylindrical cylinder bodies, and the opening direction of the first cylinder body is the same as the opening direction of the second cylinder body.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model has the advantages of reasonable structure, novel design, the practicality is strong, through piston and first, the interact of hydraulic oil in the two jars and reset spring's elasticity compensation, make the impact head receive the striking back, can absorb the kinetic energy of striking according to the size of the weight change (the kinetic energy change of striking) self-adaptation regulation reaction force of striking speed and impact thing, form soft buffering effect, can make the piston rod reset rapidly through reset spring, noise when reducing the striking through the amortization cover, reduce mechanical vibrations and noise by a wide margin, prolong mechanical life.

Drawings

FIG. 1 is a schematic view of the exploded structure of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic sectional structure of the present invention.

In the figure: 11. a silencing sleeve; 12. a striking head; 21. a cylinder cover; 22. a first seal ring; 23. a second seal ring; 24. a first cylinder; 25. a third seal ring; 26. fixing screws; 3. a bearing; 31. a second seal groove; 32. a sponge mounting groove; 4. pressure-accumulating sponge; 5. a piston rod; 51. a connector; 52. a protrusion portion; 6. a piston; 61. a baffle plate; 7. a return spring; 8. a second cylinder; 91. a first nut; 92. a second nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. 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 above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-3, a hydraulic shock absorber includes an impact head 12, a piston rod 5, a return spring 7 and a hydraulic cylinder coaxially disposed in sequence, the hydraulic cylinder includes a cylinder cover 21, a second cylinder 8 and a bearing 3, the cylinder cover comprises a first cylinder body 24, a cylinder cover 21 is fixed at the open end of the first cylinder body 24, a second cylinder body 8 and a bearing 3 are sequentially placed inside the first cylinder body 24, one end of a piston rod 5 is fixedly connected with an impact head 12, the other end of the piston rod 5 is provided with a piston 6 moving back and forth in an oil pressure cavity of the second cylinder body 8, a reset spring 7 is arranged in the oil pressure cavity of the second cylinder body 8 and connected with the piston 6, the bearing 3, a first sealing ring 22 and the cylinder cover 21 are sequentially sleeved on the middle portion of the piston rod 5, a first sealing ring 22 and a second sealing ring 23 are respectively arranged between the bearing 3 and the cylinder cover 21 and between the bearing 3 and the inner wall of the first cylinder body 24, and a. The piston rod 5 is a hard chrome-plated piston rod 5. The first cylinder block and the second cylinder block are both cylindrical cylinder blocks, and the opening of the first cylinder block 24 is in the same direction as the opening of the second cylinder block 8.

The front end of the impact head 12 is sleeved with a colloid noise reduction sleeve 11, the outer wall of the impact head 12 is provided with a clamping groove, and the noise reduction sleeve 11 is provided with an inner convex edge matched with the clamping groove.

The outer wall of the bearing 3 is provided with a sponge mounting groove 32 and a second sealing groove 31, the pressure-accumulating sponge 4 is embedded in the sponge mounting groove 32, the sponge mounting groove 32 is arranged on one side of the bearing close to the second cylinder body, the second sealing groove 31 is arranged on one side of the bearing close to the cylinder cover, the second sealing ring 23 is embedded in the second sealing groove 31, and the second sealing ring 23 is an O-shaped sealing ring.

The bearing is inwards sunk at the end face contacted with the cylinder cover and is provided with a first sealing groove, and a first sealing ring is arranged in the first sealing groove.

The piston rod 5 is provided with a connector 51 connected with the piston 6, the piston 6 is sleeved on the connector 51, the outer wall of the connector 51 is provided with a protrusion 52 clamped with the piston 6, and the tail end of the connector 51 is provided with a blocking piece 61 for limiting the piston 6.

The first cylinder 24 is provided with an oil hole at the other end opposite to the open end, the oil hole is provided with a fixing screw 26, and an O-shaped third seal ring 25 is arranged between the fixing screw 26 and the first cylinder 24. And filling hydraulic oil into the first cylinder body and the second cylinder body through the oil injection holes.

The outer wall of the first cylinder 24 is provided with a first nut 91 and a second nut 92 at an interval.

The utility model has the advantages of reasonable structure, novel design, the practicality is strong, through piston 6 and first, the interact of hydraulic oil in the two jars and reset spring 7's elasticity compensation, make impact head 12 receive the striking back, can absorb the kinetic energy of striking according to the size of the weight change (the kinetic energy change of striking) self-adaptation regulation reaction force of striking speed and rammer, form soft buffering effect, can make piston rod 5 reset rapidly through reset spring 7, noise when reducing the striking through amortization cover 11, reduce mechanical vibrations and noise by a wide margin, prolong mechanical life.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an oil buffer, its characterized in that includes the impact head, piston rod, reset spring and the oil pressure jar of coaxial setting in proper order, the oil pressure jar includes cylinder cap, second cylinder body, bearing, first cylinder body, the cylinder cap is fixed at first cylinder body open end, second cylinder body and bearing are placed in proper order inside first cylinder body, the one end and the impact head rigid coupling of piston rod, the other end of piston rod is provided with the piston at second cylinder body oil pressure chamber round trip movement, reset spring sets up the oil pressure chamber at the second cylinder body and is connected with the piston, bearing, first sealing washer, cylinder cap are established at the piston rod middle part in proper order, be provided with first sealing washer and second sealing washer between bearing and the cylinder cap, between bearing and the first cylinder body inner wall respectively, bearing outer wall cover is equipped with the round and accumulates pressure sponge.

2. The hydraulic buffer as claimed in claim 1, wherein the front end of the striker is sleeved with a rubber noise reduction sleeve, the outer wall of the striker is provided with a slot, and the noise reduction sleeve is provided with an inner flange matching with the slot.

3. A hydraulic shock absorber according to claim 2, wherein the second seal ring is an O-ring seal.

4. A hydraulic shock absorber according to claim 3, wherein the outer wall of the bearing is formed with a sponge mounting groove, and the pressure-accumulating sponge is embedded in the sponge mounting groove.

5. A hydraulic shock absorber according to claim 4, wherein the piston rod is provided with a connector connected with the piston, the piston is sleeved on the connector, the outer wall of the connector is provided with a protrusion clamped with the piston, and the tail end of the connector is provided with a baffle for limiting the piston.

6. A hydraulic shock absorber according to claim 5, wherein the first cylinder block is provided at the other end thereof opposite to the open end thereof with an oil injection hole, the oil injection hole is provided with a fixing screw, and a third O-ring is provided between the fixing screw and the first cylinder block.

7. A hydraulic shock absorber according to claim 6, wherein the first and second nuts are spaced apart from each other on the outer wall of the first cylinder.

8. A hydraulic shock absorber according to claim 7, wherein the first and second cylinder blocks are each a cylindrical cylinder block, and the opening of the first cylinder block is oriented in the same direction as the opening of the second cylinder block.