CN214578534U - Sealing device for hydraulic damper - Google Patents

Abstract

The utility model discloses a sealing device for hydraulic damper. The sealing device comprises a sealing body and a mounting structure, wherein the sealing body is formed by splicing at least two sealing members, each sealing member is provided with an opening part, the opening parts of the at least two sealing members are oppositely arranged and spliced to form a piston rod channel, and the sealing body can be tightly enclosed on the periphery of a damper piston rod through the piston rod channel; the sealing body can be fixedly arranged on the damper body through the mounting structure so that the end face of the sealing body is tightly attached to the end face of the damper body; the sealing body is provided with a positioning structure, and the positioning structure comprises pin holes correspondingly formed in adjacent sealing components and positioning pins penetrating through the pin holes. The leakage part is sealed through online installation, so that the construction period of disassembling and replacing the hydraulic damper is saved, and the installation efficiency is improved; the sealing members of the sealing body are connected in a positioning mode through the positioning structures, so that the sealing body is accurately synthesized, and the sealing effect is improved.

Description

Sealing device for hydraulic damper

Technical Field

The utility model relates to a hydraulic damper technical field, in particular to a sealing device for hydraulic damper.

Background

The hydraulic damper plays an important role in the anti-seismic of pipelines and equipment. When the pipeline or the equipment is greatly swung under the abnormal working condition, the hydraulic damper can be locked and limit the displacement of the pipeline or the equipment, so that the pipeline or the equipment is protected.

The hydraulic damper comprises a damper body and a damper piston rod, and the damper piston rod can do telescopic motion relative to the end face of the damper body; when the sealing element fails, the junction of the damper piston rod and the damper body can become a hydraulic oil leakage part of the damper, and hydraulic oil leakage occurs; at the moment, the hydraulic damper can fail, so that the anti-seismic protection effect on the pipeline or equipment is lost; therefore, it is necessary to provide a sealing device for sealing the hydraulic oil leakage position of the damper to restore the function of the hydraulic damper.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, when the sealing member became invalid to the above-mentioned of prior art, hydraulic damper can take place the defect that hydraulic oil leaked, provides a sealing device for hydraulic damper.

The utility model provides a technical scheme that its technical problem adopted is: a sealing device for a hydraulic damper is constructed, comprising:

the sealing body is formed by splicing at least two sealing members, an opening part is arranged on each sealing member, the opening parts of the at least two sealing members are oppositely arranged and spliced to form a piston rod channel, and the sealing body can be closely arranged on the periphery of the damper piston rod in a surrounding mode through the piston rod channel; and

the sealing body can be fixedly arranged on the damper body through the mounting structure so that the end face of the sealing body is tightly attached to the end face of the damper body;

and the positioning structure comprises pin holes correspondingly formed in the adjacent sealing members and positioning pins penetrating through the two adjacent pin holes.

Preferably, the sealing body is formed by splicing two sealing members, and the two sealing members are symmetrically arranged.

Preferably, the adjacent sealing members are tightly connected through a connecting structure, and the connecting structure includes first bolt holes correspondingly formed in the adjacent sealing members and first bolts penetrating through the first bolt holes.

Preferably, the positioning pin is a tapered positioning pin, and the size of the positioning pin is matched with that of the pin hole.

Preferably, the mounting structure includes second bolt holes respectively correspondingly formed in the end surfaces of the sealing body and the damper body, and second bolts penetratingly connected in the two second bolt holes to fasten and connect the sealing body and the damper body;

wherein the second bolt hole on the seal body is opened on the inner side of the seal member and/or between two adjacent seal members.

Preferably, the damper further comprises a sealing structure, and the sealing structure is arranged on two sides of the junction of the damper piston rod and the damper body and used for sealing the junction.

Preferably, the sealing structure comprises an end face groove, a channel groove and an elastic sealing element, the end face groove is arranged on the sealing component and corresponds to the end face of the damper body, the channel groove corresponds to the damper piston rod, and the elastic sealing element is arranged in the end face groove and the channel groove and abuts against the end face of the damper body and the damper piston rod.

Preferably, the elastic sealing element is an elastic body made of rubber.

Preferably, the sealing device further comprises a sealing assembly, wherein the sealing assembly comprises a splicing surface groove and a sealing gasket, the splicing surface groove is formed between every two adjacent sealing components, the sealing gasket is embedded in the splicing surface groove, and the sealing gasket is simultaneously abutted to the two sealing components.

Preferably, the splicing face groove is provided on at least one of the adjacent two sealing members.

Preferably, the splicing surface groove is communicated with the end surface groove and the channel groove to form a closed cavity, and the sealing gasket is matched with the elastic sealing element arranged in the end surface groove and the channel groove to seal the cavity.

Preferably, the sealing gasket is arranged in a shape of being embedded with the splicing surface groove, and the sealing gasket is a copper sealing gasket coated with a rubber material.

Preferably, the seal body has a transverse dimension less than an end face dimension of the damper body.

Implement the utility model discloses a sealing device for hydraulic damper has following beneficial effect:

the piston rod channel side of the sealing body is in close contact with the damper piston rod through online installation, and the end face of the sealing body is tightly attached to the end face of the damper body, so that the hydraulic oil leakage part of the damper is sealed from two sides of the leakage part, and the function of the hydraulic damper is recovered; and all the sealing components of the sealing body are connected in a positioning mode through the positioning structure, so that the sealing body is accurately synthesized, and the sealing effect is improved.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a sealing device for a hydraulic damper according to the present invention;

FIG. 2 is an exploded view of the sealing device of FIG. 1;

FIG. 3 is a schematic structural view of the sealing member shown in FIG. 1;

fig. 4 is an enlarged view of the area a in fig. 3.

In the drawing, 1 is a seal body, 11 is a piston rod channel, 12 is a seal member, 121 is a first bolt hole, 122 is a pin hole, 123 is a second bolt hole, 124 is an end face groove, 125 is a channel groove, 126 is a splicing face groove, 21 is a first bolt, and 22 is a positioning pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, in conjunction with the examples and the accompanying drawings, is intended to illustrate the present invention in further detail, and the exemplary embodiments and the description thereof are only used for explaining the present invention, and are not intended to limit the present invention.

Fig. 1 is the utility model discloses a sealing device's for hydraulic damper structural schematic diagram, as shown in fig. 1, this sealing device includes sealing body 1 and mounting structure, sealing body 1 is equipped with piston rod passageway 11, this piston rod passageway 11 is located sealing body 1's central authorities, and with attenuator piston rod looks adaptation, sealing body 1 accessible this piston rod passageway 11 closely encloses and establishes on the periphery of attenuator piston rod, and through mounting structure fixed mounting so that sealing body 1's terminal surface closely laminates with the terminal surface of attenuator body on the attenuator body.

The utility model discloses in, through 11 sides of piston rod passageway and the attenuator piston rod in close contact with of messenger's sealed body 1 to the terminal surface of sealed body 1 closely laminates with the terminal surface of attenuator body, thereby realizes sealing this leakage position on the both sides at attenuator hydraulic oil leakage position, and then resumes hydraulic damper's function.

Therefore, the hydraulic damper has reliable hydraulic oil sealing performance and can bear the oil pressure change caused by external load when the hydraulic damper is locked, the hydraulic oil pressure can reach more than 35MPa when the hydraulic damper works under the rated load through calculation, and the high oil pressure sealing of a leakage part is difficult to realize under the compact structural size of the hydraulic damper, so that the hydraulic damper with hydraulic oil leakage is generally disassembled for maintenance or replacement.

The utility model discloses in, sealed body 1 is formed by two at least sealing member 12 concatenations, is equipped with the opening on every sealing member 12, and the opening of these two at least sealing member 12 sets up the concatenation relatively and forms piston rod passageway 11, through connection structure zonulae occludens between the adjacent sealing member 12. The cross section of the sealing body 1 can be rectangular, circular and the like, and the transverse size of the sealing body 1 is smaller than the size of the end face of the damper body, so that the overall size of the sealing body 1 is small, and the installation requirement of a field compact space is met. The utility model discloses in, sealed body 1 is formed by the concatenation of a plurality of sealing member 12 for can install sealing device on hydraulic damper under the condition of not demolising hydraulic damper, avoid the work of knowing body fluid pressure damper, improve the installation effectiveness.

Preferably, the sealing body 1 is formed by splicing two sealing members 12, and the two sealing members 12 are symmetrically arranged. As can be understood, the sealing body 1 includes two sealing members 12, so that the online installation of the sealing device is realized, and meanwhile, the installation procedures are reduced as much as possible, and the installation efficiency is effectively improved.

As shown in fig. 2, the connection structure includes first bolt holes 121 correspondingly formed in the adjacent sealing members 12, and first bolts 21 penetrating and connected into the two adjacent first bolt holes 121. Specifically, a first bolt hole 121 is formed in the joint surface of the sealing member 12 and penetrates through the sealing member 12, and an internal thread is formed in the first bolt hole 121; in specific implementation, two adjacent sealing members 12 are fastened and connected through the first bolt 21, so that the sealing body 1 is spliced. It will be appreciated that the first bolt hole 121 is provided through the sealing member 12 to facilitate the provision of the first bolt 21.

Further, the sealing device further comprises a positioning structure, wherein the positioning structure comprises pin holes 122 correspondingly formed in the adjacent sealing members 12, and positioning pins 22 penetrating through the two adjacent pin holes 122. Specifically, as with the connection structure, the pin hole 122 is opened on the joint surface of the sealing member 12 and is disposed through the sealing member 12; in specific implementation, the two adjacent sealing members 12 realize accurate connection of the sealing body 1 through the positioning pins 22, so that the sealing effect of the sealing body 1 is ensured. It will be appreciated that pin holes 122 are provided through the sealing member 12 to facilitate the placement of the locating pins 22.

Wherein, the positioning pin 22 can be a tapered positioning pin, and the size of the positioning pin 22 is matched with the size of the pin hole 122. Optionally, the positioning pin 22 is in transition fit with the pin hole 122, so that the sealing effect of the sealing body 1 is ensured and the dismounting of the sealing body 1 is facilitated.

The seal body 1 is fixedly mounted on the damper body by a mounting structure, which includes a second bolt hole 123 and a second bolt. Specifically, the second bolt holes 123 are respectively formed in the connection end surfaces of the seal body 1 and the damper body, and the second bolt holes 123 on the two end surfaces are correspondingly formed; the second bolt hole 123 on the sealing body 1 penetrates through the sealing member 12, and when the damper is implemented specifically, the sealing body 1 and the damper body can be fastened and connected by sequentially penetrating through the second bolt holes 123 on the sealing body 1 and the damper body through the second bolts.

Wherein the second bolt hole 123 on the seal body 1 opens on the inner side of the seal member 12 and/or between two adjacent seal members 12. Preferably, the second bolt hole 123 on the sealing body 1 opens on the inner side of the sealing member 12 and at the joint face of the sealing member 12 and between two adjacent sealing members 12 at the same time. It will be appreciated that a second bolt hole 123 opens between two adjacent sealing members 12, further enhancing the fastening connection of adjacent sealing members 12.

In order to realize the sealing connection between the sealing device and the hydraulic damper, the sealing device also comprises a sealing structure which is arranged on two sides of the junction of the damper piston rod and the damper body so as to realize the sealing of the junction.

As shown in fig. 3, 4, the sealing means includes an end surface groove 124, a passage groove 125, the end surface groove 124 being provided on an end surface of the seal member 12 corresponding to the end surface of the damper body so as to correspond to the end surface of the damper body; a passage groove 125 is provided on the sealing member 12 on the side corresponding to the damper piston rod; elastic sealing elements are arranged in the end face groove 124 and the channel groove 125 and extend outwards from the groove side, so that when the sealing device is installed on the hydraulic damper, the elastic sealing elements in the end face groove 124 and the channel groove 125 are respectively abutted against the end face of the damper body and the damper piston rod, and the sealing connection between the sealing body 1 and the hydraulic damper is realized.

Wherein the end face groove 124 is provided near the side where the piston rod passage 11 is located, and the passage groove 125 is provided near the side where the end face of the seal member 12 is located, it can be understood that, when the sealing device is mounted on the hydraulic damper, the elastic sealing members in the end face groove 124 and the passage groove 125 seal the hydraulic oil leakage portion of the damper from both sides thereof; preferably, the end surface groove 124 and the channel groove 125 are arranged close to the hydraulic oil leakage part of the damper, so that the sealing effect is effectively enhanced.

The elastic sealing element is an elastic body made of rubber materials, the sealing effect is enhanced, and the telescopic activity of the damper piston rod relative to the damper body is not influenced. Wherein, the sealing performance of the corresponding part can be ensured by calculating the sizes of the end surface groove 124, the channel groove 125 and the elastic sealing element arranged therein; for the channel groove 125 and the elastic sealing member disposed therein, it is possible to satisfy the requirement of low friction while achieving high sealing performance by securing the filling amount and the compression amount of the elastic sealing member.

In the present invention, as shown in fig. 2, the end face groove 124 and the channel groove 125 are disposed in an annular structure, and correspondingly, the elastic sealing member in the end face groove 124 and the channel groove 125 is also disposed in an annular structure. It can be understood that the initial state of the elastic sealing elements in the end surface grooves 124 and the channel grooves 125 are arranged in an opening shape, and during the process of splicing and installing the sealing device on the hydraulic damper on line, the sealing device is cut to a proper length on site, assembled on line to form a joint, and finally subjected to an on-line vulcanization process by a special device to form a complete annular sealing structure.

In order to enhance the sealing effect between the adjacent sealing members 12, the sealing device further includes a sealing assembly, the sealing assembly includes a splicing surface groove 126 and a sealing gasket, the splicing surface groove 126 is opened on the splicing surface of the sealing members 12, wherein the splicing surface groove 126 can be disposed on one sealing member 12 or on two sealing members 12 at the splicing surface. The sealing gasket is embedded in the splicing surface groove 126, and preferably, the thickness of the sealing gasket is greater than the depth of the splicing surface groove 126, so that after the adjacent sealing components 12 are spliced and connected, the sealing gasket is abutted against the two sealing components 12 simultaneously.

The splicing surface groove 126, the end surface groove 124 and the channel groove 125 are communicated, when the sealing body 1 is installed on the hydraulic damper, the splicing surface groove 126, the end surface groove 124 and the channel groove 125 enclose a closed cavity, the sealing gasket, the end surface groove 124 and the channel groove 125 are matched with elastic sealing elements in the channel groove 125 to seal the cavity, and meanwhile, the sealing of the hydraulic oil leakage part of the damper and the sealing among the sealing components 12 in the sealing body 1 are achieved. The sealing gasket is arranged in a shape of being embedded with the splicing surface groove 126, and is a copper sealing gasket coated with a rubber material, wherein an annealed red copper gasket can be adopted.

It can be understood that finite element checking and calculation can be carried out according to the structural strength of the sealing device so as to meet the corresponding rigidity and strength requirements, and therefore the problem that the system is unavailable due to hydraulic oil leakage of the hydraulic damper is solved.

Adopt the utility model discloses a sealing device can install on hydraulic damper under the condition that need not demolish hydraulic damper, through the mode of online installation, leaks the position to hydraulic damper hydraulic oil and seals, reestablishes hydraulic oil working medium's seal structure to resume hydraulic damper's function, have the time limit for a project, manpower and the spare part cost of saving hydraulic damper dismantlement and change, but arrange fast and use, shorten advantages such as time of problem processing by a wide margin.

It is understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (13)

1. A sealing device for a hydraulic damper comprises a damper body and a damper piston rod, wherein the damper piston rod can do telescopic motion relative to the end face of the damper body; characterized in that said sealing means comprises:

the damper piston rod sealing structure comprises a sealing body (1) and a damper piston rod, wherein the sealing body (1) is formed by splicing at least two sealing members (12), an opening part is arranged on each sealing member (12), the opening parts of the at least two sealing members (12) are oppositely arranged and spliced to form a piston rod channel (11), and the sealing body (1) can be tightly arranged on the periphery of the damper piston rod through the piston rod channel (11); and

the sealing body (1) can be fixedly mounted on the damper body through the mounting structure so that the end face of the sealing body (1) is tightly attached to the end face of the damper body;

and a positioning structure is arranged between the adjacent sealing components (12), and comprises pin holes (122) correspondingly formed in the adjacent sealing components (12) and positioning pins (22) penetrating through the two adjacent pin holes (122).

2. Sealing device for a hydraulic damper, according to claim 1, characterized in that said sealing body (1) is made by splicing two said sealing members (12), and said two sealing members (12) are symmetrically arranged.

3. The sealing arrangement for a hydraulic damper according to claim 1 or 2, characterized in that adjacent sealing members (12) are tightly connected by a connecting structure, and the connecting structure comprises first bolt holes (121) correspondingly formed in adjacent sealing members (12) and first bolts (21) penetrating and connected in two adjacent first bolt holes (121).

4. Sealing arrangement for a hydraulic damper according to claim 1, characterized in that the positioning pin (22) is a conical positioning pin, the dimensions of the positioning pin (22) being adapted to the dimensions of the pin hole (122).

5. The sealing device for the hydraulic damper as recited in claim 1, wherein the mounting structure comprises second bolt holes (123) respectively opened on the end faces of the sealing body (1) and the damper body, and second bolts penetrating into the second bolt holes (123) to tightly connect the sealing body (1) and the damper body;

wherein the second bolt hole (123) on the seal body (1) opens on the inside of the seal member (12) and/or between two adjacent seal members (12).

6. The sealing device for a hydraulic damper as recited in claim 1, further comprising sealing structures provided on both sides of a junction of the damper piston rod and the damper body for sealing the junction.

7. The sealing arrangement for a hydraulic damper as recited in claim 6, characterized in that the sealing arrangement comprises end face grooves (124) provided on the sealing member (12) corresponding to the end faces of the damper body, respectively, channel grooves (125) corresponding to the damper piston rods, and elastic seals provided in the end face grooves (124), the channel grooves (125) and abutting the end faces of the damper body, the damper piston rods.

8. A sealing arrangement for a hydraulic damper as claimed in claim 7, characterised in that the resilient seal is an elastomer made of a rubber material.

9. The sealing arrangement for a hydraulic damper according to claim 7, further comprising a sealing assembly, wherein the sealing assembly comprises a splicing surface groove (126) arranged between two adjacent sealing members (12) and a sealing gasket, the sealing gasket is embedded in the splicing surface groove (126), and the sealing gasket is simultaneously abutted against the two sealing members (12).

10. The sealing arrangement for a hydraulic damper as claimed in claim 9, characterized in that the splice face groove (126) is provided on at least one of two adjacent sealing members (12).

11. A sealing arrangement for a hydraulic damper according to claim 9 or 10, characterised in that the splicing face groove (126) communicates with the end face groove (124) and the channel groove (125) to form a closed chamber, and the sealing gasket cooperates with the elastic sealing element arranged in the end face groove (124) and the channel groove (125) to seal the chamber.

12. The sealing device for a hydraulic damper according to claim 9, characterized in that the gasket is arranged in a shape of being embedded in the groove (126) of the splicing surface, and the gasket is a copper gasket coated with a rubber material.

13. Sealing device for a hydraulic damper, according to claim 1, characterized in that the transverse dimension of the sealing body (1) is smaller than the end face dimension of the damper body.

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