CN214742968U - Elastic damping body capable of compensating and sealing - Google Patents
Elastic damping body capable of compensating and sealing Download PDFInfo
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- CN214742968U CN214742968U CN202120939330.2U CN202120939330U CN214742968U CN 214742968 U CN214742968 U CN 214742968U CN 202120939330 U CN202120939330 U CN 202120939330U CN 214742968 U CN214742968 U CN 214742968U
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Abstract
The utility model discloses a can compensate sealed elastic damping body. Comprises a piston seat, a piston rod, a piston ring, a cylinder body, a cylinder cover and an elastic damper; one end of the piston rod is connected with the piston seat, and the other end of the piston rod penetrates through the cylinder cover to be connected with the piston ring; a sealing ring is arranged on the side surface of the cylinder cover, which is in contact with the piston rod; the cylinder body and the piston ring form a closed space which is filled with elastic damping; an elastic annular outer ring is arranged on one side, close to the piston seat, of the cylinder cover, and an annular inner ring is arranged between the elastic annular outer ring and the piston rod; the edge part of the cylinder cover forms a protruding part, and the elastic annular outer ring and the annular inner ring are embedded in the protruding part; the annular inner ring comprises two semicircular rings, and two ends of the two semicircular rings are connected through sealing rubber, so that the two semicircular rings are connected into an annular ring; the annular hollow part is arranged in the elastic annular outer ring and can be filled with gas, and the inner side surface of the annular inner ring is attached to the piston rod through extrusion. Realize the compensation and seal, prolong the service life of the elastic damping body.
Description
Technical Field
The application relates to the technical field of shock absorbers, in particular to a compensatable sealing elastic damping body.
Background
On an industrial production line or in machinery, most of the industrial production line or the machinery adopts a pneumatic type, an air oil type, a hydraulic type, a composite multi-cavity oil type and other buffer devices to absorb impact energy between machines so as to play roles of protecting equipment, reducing noise and ensuring stable operation of the equipment. The elastic damping body buffer device takes elastic damping as a working medium, and can effectively restrain the vibration when the elastic damping body buffer device rebounds after absorbing shock.
Traditional elastic damping body is after using many times, and the cylinder cap often rubs with the piston rod, produces wearing and tearing, leads to elastic damping body's leakproofness to weaken, and it is inconvenient to change the maintenance, uses the shock attenuation effect that leads to elastic damping body for a long time to reduce.
SUMMERY OF THE UTILITY MODEL
The damping device aims to solve the problems in the prior art that after the existing elastic damping body is used for multiple times, a cylinder cover and a piston rod frequently rub to generate abrasion, the sealing performance of the elastic damping body is weakened, the elastic damping body is inconvenient to replace and maintain, and the damping effect of the elastic damping body is reduced due to long-time use.
The application provides a compensatable sealing elastic damping body, which comprises a piston seat, a piston rod, a piston ring, a cylinder body, a cylinder cover and elastic damping; one end of the piston rod is connected with the piston seat, and the other end of the piston rod penetrates through the cylinder cover to be connected with the piston ring; a sealing ring is arranged on the side surface of the cylinder cover, which is in contact with the piston rod; the cylinder body and the piston ring form a closed space which is filled with elastic damping; one side of the cylinder cover close to the piston seat is provided with an elastic annular outer ring which surrounds the piston rod, and an annular inner ring is arranged between the elastic annular outer ring and the piston rod; the edge part of the cylinder cover protrudes towards the direction of the piston seat to form a protruding part, and the elastic annular outer ring and the annular inner ring are embedded in the protruding part; the annular inner ring comprises two semicircular rings, and two ends of the two semicircular rings are connected through sealing rubber, so that the two semicircular rings are connected into an annular ring; the annular hollow part is arranged in the elastic annular outer ring and can be filled with gas, and the inner side surface of the annular inner ring is attached to the piston rod through extrusion.
In the preferred implementation mode of the compensatable sealed elastic damping body, one surface of the cylinder cover, which is in contact with the cylinder body, is provided with a protruding limiting part, the inner side surface of the cylinder body is provided with a groove matched with the protruding limiting part, and the cylinder cover is connected with the groove on the cylinder body through the protruding limiting part in a clamping manner. The cylinder cover and the cylinder body can be tightly clamped, and the firmness of the elastic damping body is improved.
In a preferred implementation manner of the compensatably sealed elastic damping body, a heat insulation layer is arranged on one side of the annular inner ring, which is in contact with the elastic annular outer ring, and the heat insulation layer is used for isolating heat generated when the piston rod and the annular inner ring move relatively. The heat insulating layer is used for isolating heat generated when the piston rod and the annular inner ring move relatively, and the elastic annular outer ring can be effectively protected.
In a preferred embodiment of the compensatively sealed elastic damping body, the elastic annular outer ring is provided with an inflation opening for inflating the elastic annular outer ring. The annular hollow part of the elastic annular outer ring is inflated through the inflation inlet arranged on the elastic annular outer ring, and the annular inner ring is extruded to form the compensatable sealing structure.
In a preferred implementation manner of the elastic damping body capable of compensating and sealing, the ratio of the diameter of the elastic annular outer ring to the diameter of the annular hollow part is 10:2, and by increasing the volume of the elastic part, the elastic annular outer ring can be guaranteed to bear more abrasion when the elastic damping body works, and meanwhile, the annular hollow part is inflated, so that the effect of compensating and sealing is achieved.
In a preferred embodiment of the compensatably sealed elastic damping body, the edge portion of the piston seat extends towards the piston ring forming an extension, the inner surface of which is provided with a rubber thread for increasing the friction force generated during the relative movement of the piston seat and the cylinder body. When the piston ring moves to the inside of the cylinder body, the inner surface of the piston seat is in contact with the cylinder body, and the rubber threads are arranged on the inner surface of the edge part of the piston seat, so that the friction force generated when the piston seat and the cylinder body move relatively can be increased, and the vibration generated between the piston rod and the cylinder cover when the piston rod returns to the position of the cylinder cover is reduced.
In a preferred implementation manner of the compensatively sealed elastic damping body, an elastic layer is arranged on one side of the piston ring close to the cylinder cover, and the elastic layer is made of rubber. The elastic layer is arranged on one side, close to the cylinder cover, of the piston ring and made of rubber, and friction generated between the piston rod and the cylinder cover when the piston rod returns to the initial position can be effectively reduced.
In a preferred realization of the compensatably sealed elastic damping body, the piston ring is of hollow construction. Through setting up the piston ring into hollow structure, when not influencing the elastic damping body function, reduce the use of piston ring material, save the cost.
As will be appreciated by those skilled in the art, the foregoing description of the present application of the compensatably sealed elastomeric damper has at least the following beneficial effects:
1. through the sealing ring arranged on the side face of the cylinder cover in contact with the piston rod, when the piston rod and the cylinder cover move relatively, the cylinder cover is abraded to form a first layer of seal, and the tightness of the elastic damping body can be guaranteed. An elastic annular outer ring is arranged on one side, close to the piston seat, of the cylinder cover and surrounds the piston rod, and an annular inner ring is arranged between the elastic annular outer ring and the piston rod; and a second layer of seal is formed, an annular hollow part is arranged in the elastic annular outer ring, the annular hollow part can be filled with gas, the annular hollow part is filled with gas when the annular inner ring is abraded due to relative operation of the piston rod, and the annular hollow part is extruded to enable the annular inner ring to be attached to the piston rod, so that the sealing performance is increased, the compensation sealing is realized, and the service life of the elastic damping body is prolonged.
2. The annular inner ring is arranged between the elastic annular outer ring and the piston rod and is made of non-metallic materials, so that friction between the annular inner ring and the piston rod can be reduced, and abrasion is reduced. The two ends of the two semicircular rings are connected through the sealing rubber, the two semicircular rings are connected into an annular inner ring, the elastic annular outer ring and the elastic annular inner ring are embedded in the convex part of the cylinder cover, when the elastic annular outer ring is inflated, the sealing rubber is extruded through the two semicircular rings, the diameter of the annular inner ring is reduced, the annular inner ring is compressed towards the direction of the piston rod, and a good sealing effect can be achieved.
3. The heat insulating layer is arranged on one side of the annular inner ring, which is in contact with the elastic annular outer ring, so that heat generated when the piston rod and the annular inner ring move relatively is isolated by the heat insulating layer, and the effect of effectively protecting the elastic annular outer ring can be achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a longitudinal cross-sectional view of a compensatably sealed elastomeric damper provided in accordance with an embodiment of the present application;
FIG. 2 is a cross-sectional view of a compensatably sealed elastomeric damper provided in accordance with an embodiment of the present application and corresponding to FIG. 1 at A;
description of reference numerals: 1-piston seat, 11-extension part, 2-piston rod, 3-piston ring, 4-cylinder body, 5-cylinder cover, 51-protrusion limit piece, 6-elastic damping, 7-sealing ring, 8-elastic annular outer ring, 9-annular inner ring and 91-sealing rubber.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present application, and not all embodiments of the present application, and the part of the embodiments are intended to explain the technical principles of the present application and not to limit the scope of the present application. All other embodiments that can be obtained by a person skilled in the art based on the embodiments provided in the present application without inventive effort shall still fall within the scope of protection of the present application.
It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
As shown in fig. 1, the compensatable sealed elastic damping body provided by the embodiment of the application comprises a piston seat 1, a piston rod 2, a piston ring 3, a cylinder body 4, a cylinder cover 5 and an elastic damping 6. One end of a piston rod 2 is connected with a piston seat 1, and the other end of the piston rod 2 penetrates through a cylinder cover 5 and is connected with a piston ring 3; and a sealing ring is arranged on the side surface of the cylinder cover 5 contacted with the piston rod 2. The cylinder 4 and the piston ring 3 form a closed space, and the closed space is filled with an elastic damper 6. Wherein, the elastic damper 6 is a high-viscosity compressible semi-fluid high polymer material.
The elastic damper 6 pre-charges pressure, and external force acts on the piston rod 2. When the external force acting on the piston rod 2 is larger than the pre-charging force of the elastic damper 6 in the device, the piston rod 2 is pressed into the cylinder 4, the inner diameter of the piston seat 1 is equal to the outer diameter of the cylinder 4, the inner contour of the piston seat 1 is attached to the outer contour of the cylinder 4 when the piston seat 1 moves to the cylinder 4, the elastic damper 6 is compressed along with the increase of the length of the piston rod 2 in the cylinder 4, the volume is reduced, the pressure is increased, the increased pressure acts on the piston rod 2, and when the pressure acting on the piston rod 2 is balanced with the external force, the piston rod 2 stops moving. When the external force is smaller than the pressure acting on the piston rod 2, the piston rod 2 extends out completely and returns to the initial position, and the pressure of the elastic damper 6 in the closed space also returns to the initial pre-charging pressure value.
Fig. 2 is a transverse cross-sectional view of the compensatably sealed elastic damping body provided by the present application, which corresponds to a position a in fig. 1, as shown in fig. 1 and fig. 2, one side of the cylinder cover 5, which is close to the piston seat 1, is provided with an elastic annular outer ring 8, the elastic annular outer ring 8 surrounds the outside of the piston rod 2, and an annular inner ring 9 is provided between the elastic annular outer ring 8 and the piston rod 2. The edge part of the cylinder cover 5 protrudes towards the direction of the piston seat 1 to form a protruding part, and an elastic annular outer ring 8 and an annular inner ring 9 are embedded in the protruding part; the annular inner ring 9 comprises two semicircular rings, and two ends of the two semicircular rings are connected through sealing rubber 91, so that the two semicircular rings are connected into an annular ring; an annular hollow part is arranged in the elastic annular outer ring 8, the annular hollow part can be filled with gas, and the inner side surface of the annular inner ring 9 is attached to the piston rod 2 through extrusion.
The two ends of the two semicircular rings are connected through the sealing rubber, the two semicircular rings are connected into an annular inner ring, the elastic annular outer ring and the elastic annular inner ring are embedded in the convex part of the cylinder cover, when the elastic annular outer ring is inflated, the sealing rubber is extruded through the two semicircular rings, the diameter of the annular inner ring is reduced, the annular inner ring is compressed towards the direction of the piston rod, and the sealing effect can be achieved.
In the embodiment of the present application, the two semicircular rings of the annular inner ring are preferably made of a non-metallic material, and the annular inner ring is made of a non-metallic material, so that friction between the annular inner ring and the piston rod can be reduced, and further, abrasion can be reduced. For example, the material of the two semicircular rings may be self-lubricating resin.
The sealing ring arranged on the side face, in contact with the piston rod 2, of the cylinder cover 5 forms a first layer of sealing, and the sealing performance of the closed space in the cylinder body is guaranteed. When the external force acting on the piston rod 2 is larger than the pre-charging force of the elastic damping 6 in the device, the piston rod 2 is pressed into the cylinder body 4, the relative motion between the cylinder cover 5 and the piston rod 2 generates friction, at the moment, the sealing ring is possibly weakened due to long-term abrasion, and the damping effect of the elastic damping body is reduced due to long-term use. Therefore, one side of the cylinder cover 5 close to the piston seat 1 is provided with the elastic annular outer ring 8, the annular inner ring 9 is arranged between the elastic annular outer ring 8 and the piston rod 2, the annular hollow part of the elastic annular outer ring 8 is inflated to extrude the annular inner ring 9, so that the annular inner ring 9 is tightly attached to the piston rod 2, a second layer of seal can be formed, when the sealing ring is worn for a long time to cause the weakening of the sealing performance, a secondary seal is formed for the closed space of the cylinder body through the second layer of seal, and the sealing performance of the elastic damping body is ensured.
Further, an inflation inlet is arranged on the elastic annular outer ring 8 and used for inflating the elastic annular outer ring 8.
Specifically, when the external force acting on the piston rod 2 is larger than the pre-charging force of the elastic damper 6 inside the device, the piston rod 2 is pressed into the cylinder 4, and the sealing performance formed by the annular inner ring may be weakened when the piston rod 2 and the annular inner ring 9 move relatively for multiple times of friction. Therefore, the annular hollow part of the elastic annular outer ring 8 can be inflated through the inflation inlet arranged on the elastic annular outer ring 8, the annular inner ring 9 is extruded through the elastic annular outer ring, a compensation sealing structure is formed, the sealing performance of the annular inner ring is recovered, and the service life of the elastic damping body is prolonged.
Furthermore, a protruding limiting part 51 is arranged on one surface, in contact with the cylinder body 4, of the cylinder cover 5, a groove matched with the protruding limiting part 51 on the cylinder cover 5 is formed in the inner side surface of the cylinder body 4, the cylinder cover 5 is connected with the groove on the cylinder body 4 in a clamping mode through the protruding limiting part 51, the cylinder cover 5 can be tightly clamped with the cylinder body 4, and firmness of the elastic damping body is improved.
It should be noted that the protruding position-limiting member is made of a metal material, and the shape of the protruding position-limiting member includes, but is not limited to, a square shape, a cylindrical shape, and a circular shape.
Further, one side of the annular inner ring 9 contacting the elastic annular outer ring 8 is provided with a heat insulation layer (not shown in the figure), when the piston rod 2 is pressed into the cylinder 4, when the piston rod 2 and the annular inner ring 9 move relatively to generate friction, a large amount of heat is generated due to friction between the piston rod and the annular inner ring, if the heat is conducted to the elastic annular outer ring 8, the elastic annular outer ring 8 can be deformed, the sealing performance of the elastic damping body is affected, therefore, the heat generated when the piston rod 2 and the annular inner ring 9 move relatively is isolated by the heat insulation layer, and the effect of effectively protecting the elastic annular outer ring 8 can be achieved.
Furthermore, the ratio of the diameter of the elastic annular outer ring 8 to the diameter of the annular hollow part is 10:2, the volume of the elastic part is increased, the elastic annular outer ring 8 can bear more abrasion when the elastic damping body works, and meanwhile, the annular hollow part is inflated, so that the effect of sealing compensation is achieved.
Further, the edge portion of the piston seat 1 extends towards the piston ring 3 to form an extension portion 11, a rubber thread is arranged on the inner surface of the extension portion 11, when the piston ring 3 moves to the inside of the cylinder 4, the inner surface of the piston seat 1 is in contact with the cylinder, and the rubber thread is arranged on the inner surface of the edge portion of the piston seat 1, so that the friction force generated when the piston seat 1 and the cylinder 4 move relatively can be increased, and the vibration generated between the piston rod 2 and the cylinder cover 5 when the piston rod 2 returns to the cylinder cover position can be reduced.
It should be noted that, the extension portion may be attached to a portion of the outer surface of the cylinder body, or the extension portion may further extend toward the bottom of the cylinder body until the extension portion is completely attached to the outer surface of the cylinder body, so as to form a completely sealed structure.
Further, when external force is smaller than pressure acting on the piston rod 2, the piston rod 2 extends out completely and returns to the initial position, certain friction is generated between the piston rod 2 and the cylinder cover 5, and abrasion is brought to the cylinder cover 5, so that an elastic layer is arranged on one side, close to the cylinder cover 5, of the piston ring 3 and made of rubber, and vibration generated between the piston rod 2 and the cylinder cover 5 when the piston rod 2 returns to the initial position can be effectively reduced.
Further, the piston ring 3 is of a hollow structure, and the piston ring 3 is set to be of the hollow structure, so that the function of the elastic damping body is not affected, meanwhile, the use of piston ring materials is reduced, and the cost is saved.
The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A kind of elastic damping body of compensatable seal, characterized by, including piston seat, piston rod, piston ring, cylinder block, cylinder cap, elastic damping;
one end of the piston rod is connected with the piston seat, and the other end of the piston rod penetrates through the cylinder cover to be connected with the piston ring; a sealing ring is arranged on the side surface of the cylinder cover, which is in contact with the piston rod;
the cylinder body and the piston ring form a closed space, and the elastic damping is filled in the closed space;
an elastic annular outer ring is arranged on one side, close to the piston seat, of the cylinder cover and surrounds the piston rod, and an annular inner ring is arranged between the elastic annular outer ring and the piston rod;
the edge part of the cylinder cover protrudes towards the piston seat to form a protruding part, and the elastic annular outer ring and the annular inner ring are embedded in the protruding part;
the annular inner ring comprises two semicircular rings, and two ends of the two semicircular rings are connected through sealing rubber, so that the two semicircular rings are connected into an annular ring;
an annular hollow part is arranged in the elastic annular outer ring, the annular hollow part can be filled with gas, and the inner side surface of the annular inner ring is attached to the piston rod through extrusion.
2. The compensated sealing elastic damping body according to claim 1, wherein a protruding limiting member is disposed on a surface of the cylinder cover contacting the cylinder body, a groove matching with the protruding limiting member is disposed on an inner side surface of the cylinder body, and the cylinder cover is connected with the groove of the cylinder body through the protruding limiting member in a snap-fit manner.
3. The compensated sealed elastic damping body according to claim 1, wherein a thermal insulation layer is disposed on a side of the annular inner ring contacting the elastic annular outer ring, and the thermal insulation layer is used for insulating heat generated when the piston rod and the annular inner ring move relatively.
4. The compensated sealed elastic damping body of claim 1, wherein an inflation port is provided on the elastic annular outer ring for inflating the elastic annular outer ring.
5. The compensated sealed elastic damping body of claim 1, wherein the ratio of the diameter of the elastic annular outer ring to the diameter of the annular hollow portion is 10: 2.
6. The compensated sealed elastic damping body of claim 1, wherein the edge portion of the piston seat extends toward the piston ring to form an extension, and the inner surface of the extension is provided with a rubber thread for increasing the frictional force generated when the piston seat and the cylinder block move relative to each other.
7. The compensated sealed elastic damping body of claim 1, wherein a resilient layer is disposed on a side of the piston ring adjacent to the cylinder head, and the resilient layer is made of rubber.
8. The compensated sealed elastomeric damper of claim 1, wherein the piston ring is a hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120939330.2U CN214742968U (en) | 2021-04-30 | 2021-04-30 | Elastic damping body capable of compensating and sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120939330.2U CN214742968U (en) | 2021-04-30 | 2021-04-30 | Elastic damping body capable of compensating and sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214742968U true CN214742968U (en) | 2021-11-16 |
Family
ID=78616165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120939330.2U Active CN214742968U (en) | 2021-04-30 | 2021-04-30 | Elastic damping body capable of compensating and sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214742968U (en) |
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2021
- 2021-04-30 CN CN202120939330.2U patent/CN214742968U/en active Active
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