CN113814690B

CN113814690B - Elastic retainer ring fastening and restoring device

Info

Publication number: CN113814690B
Application number: CN202111082787.7A
Authority: CN
Inventors: 董军科; 于国强; 刘国强; 谢赛; 魏冠伟
Original assignee: Beijing Meike Tianma Automation Technology Co Ltd; Beijing Tianma Intelligent Control Technology Co Ltd
Current assignee: Beijing Meike Tianma Automation Technology Co Ltd; Beijing Tianma Intelligent Control Technology Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-12-06
Anticipated expiration: 2041-09-15
Also published as: CN113814690A

Abstract

The invention provides a circlip fastening and restoring device, which comprises: a clamping jaw; the clamping jaws are symmetrically arranged along the circumferential direction and used for clamping shaft parts sleeved with the elastic check rings and fastening the elastic check rings; and a power element cylinder; and the power element cylinders are arranged on the clamping jaws and drive the clamping jaws to clamp or open. The invention overcomes the defects that the elastic retainer ring is easy to generate plastic deformation and is difficult to recover in the installation process, realizes the function of axial fixation and sealing O ring protection of the installed elastic retainer ring, and avoids the problem that shaft parts cannot be assembled in the next step due to the deformation of the elastic retainer ring, thereby not only improving the assembly quality of the elastic retainer ring, but also improving the working efficiency.

Description

Elastic retainer ring fastening and restoring device

Technical Field

The invention relates to the technical field of elastic check ring fastening, in particular to an elastic check ring fastening and restoring device.

Background

The polytetrafluoroethylene elastic check ring is made of pure polytetrafluoroethylene and composite materials and is used for dynamic sealing p is larger than or equal to 10mpa, and the elastic check ring is arranged on the pressure-bearing surface of the O-shaped sealing ring to play a role in axial fixation. The shaft part has excellent chemical corrosion such as acid and alkali resistance, high temperature resistance, cold resistance, wear resistance, self-lubrication, water absorption resistance, non-adhesion, aging resistance, high mechanical strength and other properties, can greatly improve the sealing bearing capacity and prolong the service life of various sealing rings, and is widely applied to various industries of a hydraulic sealing system.

At present, polytetrafluoroethylene elastic check rings used in a hydraulic sealing system in the traditional market mostly adopt manual sleeving, a single elastic check ring is assembled one by one, generally, the elastic check rings are cut according to a fixed angle by manpower, then the elastic check rings are installed on various parts of a hydraulic valve, finally, the elastic check rings are restored to a normal use state through manual pressing, bending and other operations, the elastic check rings are easily subjected to plastic deformation in the installation process, the phenomena of creases and the like appear on the surfaces of the parts or the damage, the elastic check rings can not be axially fixed, the O-shaped sealing rings can not be protected, the elastic check rings can not be tightened and restored in serious conditions, shaft parts with unqualified elastic check rings installed can not be assembled in the next step, only new elastic check rings can be replaced, the working strength of operators is high, the installation is labor-consuming, and the working efficiency is low.

Therefore, it is an urgent technical problem to provide a device for fastening and restoring a circlip, which can fasten and restore a notched circlip, especially a teflon circlip, after the circlip is sleeved in an outer circlip groove of a shaft part.

Disclosure of Invention

The invention aims to solve one of the technical problems in the related technology at least to a certain extent, and provides a circlip fastening and restoring device, which overcomes the defects that the circlip is easy to generate plastic deformation and is difficult to restore in the installation process, realizes the effect that the installed circlip can play the role of axial fixation and sealing O ring protection, and avoids the problem that shaft parts cannot be assembled in the next step due to the deformation of the circlip, thereby not only improving the assembly quality of the circlip, but also improving the working efficiency.

In view of this, the present invention provides a circlip fastening and restoring apparatus, including:

a clamping jaw; the clamping jaws are symmetrically arranged along the circumferential direction and used for clamping shaft parts sleeved with the elastic check rings and fastening the elastic check rings; and

a power element cylinder; and the power element cylinders are arranged on the clamping jaws and drive the clamping jaws to clamp or open.

According to one embodiment of the invention, the front ends of the clamping jaws are arc-shaped, and the clamping jaws clamp outside the elastic check ring together.

According to one embodiment of the invention, the number of the clamping jaws is three, and the three clamping jaws surround to form a circle.

According to one embodiment of the invention, a boss is arranged in the arc of the front end of the clamping jaw; the boss and the shaft part are matched with each other in a mounting groove for mounting the elastic check ring, and the boss can be embedded into the mounting groove and tightly pressed outside the elastic check ring.

According to an embodiment of the invention, the sum of the protruding length of the boss and the thickness of the circlip is equal to the depth of the mounting groove.

According to an embodiment of the invention the height of the elevation is larger than the height of the circlip.

Through the technical scheme, the invention provides a device for fastening and recovering an elastic check ring, which has the following technical effects:

(1) The arc design of the front end of the clamping jaw ensures that shaft parts cannot be inclined or clamped and not attached;

(2) The design of the arc boss at the front end of the clamping jaw ensures that the deformed elastic check ring returns to the correct mounting position through the size of the arc boss at the front end of the clamping jaw. After the elastic check ring is extruded by the boss, the elastic check ring completely enters the part mounting groove and is not deformed, and the problems that the elastic check ring is deformed after manual assembly and the next assembly of the shaft parts is influenced are solved.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a circlip fastening and restoring apparatus provided in embodiment 1.

Fig. 2 is a schematic plan view showing the fastening and restoring apparatus for a circlip provided in example 1.

Fig. 3 is a schematic structural view of a boss on a clamping jaw provided in example 1.

The clamping jaw is a clamping jaw 1, the power element cylinder is a power element cylinder 2, the arc is 3, the boss is 4, the mounting groove is 5, and the shaft part is 6.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.

Example 1

In view of the above, as shown in fig. 1-2, the present invention provides a circlip fastening and restoring apparatus, comprising:

a clamping jaw 1; the clamping jaws 1 are symmetrically arranged along the circumferential direction and used for clamping the shaft parts 6 sleeved with the elastic check rings and fastening the elastic check rings; and

a power element cylinder 2; the clamping jaws 1 are all provided with power element cylinders 2, and the power element cylinders 2 drive the clamping jaws 1 to clamp or open.

According to the circlip fastening and recovering device provided by the embodiment of the invention, a plurality of clamping jaws 1 symmetrically arranged along the circumferential direction are opened at initial positions, the circlip is installed on a shaft part 6 after completing a cut, but the circlip is not fastened and recovered at the moment, the shaft part 6 is placed at the middle positions of the clamping jaws 1 at the moment, a power element cylinder 2 is contracted to drive the clamping jaws 1 to enable the shaft part 6 to be clamped in a circular shape formed by jointly embracing the clamping jaws 1, the circlip which is installed and is not fastened and recovered is fastened, the fastened circlip is extruded and contracted to a state before the cut, and after a certain time is kept, the circlip is fastened on the shaft part 6 and is recovered to a normal use state.

Referring to fig. 3, according to an embodiment of the present invention, the front end of the clamping jaw 1 is arc-shaped 3, and a plurality of clamping jaws 1 clamp around the outside of the circlip together.

According to the circlip fastening and restoring device provided by the embodiment of the invention, the front ends of the clamping jaws 1 are arc-shaped 3, and the circular inner diameter formed when the clamping jaws 1 jointly embrace is equal to the outer diameter of the fastened circlip. 3 sizes of clamping jaw 1 front end circular arc are corresponding with 6 external diameter self external diameter sizes of axle type part, like this at the clamping process, can not make axle type part 6 fall on one's side, perhaps produce and press from both sides tight phenomenon of not laminating for circlip's fastening is outside at axle type part 6.

According to one embodiment of the invention, the number of the clamping jaws 1 is three, and the three clamping jaws 1 surround to form a circle.

According to one embodiment of the invention, as shown in fig. 3, a boss 4 is arranged in the front end of the clamping jaw 1 along an arc 3; boss 4 and axle type 6 go up installation 5 looks adaptations of installation circlip, and boss 4 can imbed in installation groove 5, compresses tightly outside circlip.

According to one embodiment of the invention, the sum of the protruding length of the boss 4 and the thickness of the circlip is equal to the depth of the mounting groove 5.

The protruding length of the boss 4 is calculated according to the matching size of the elastic collar installation groove 5 and the elastic collar of the shaft part 6, wherein the sum of the protruding length of the boss 4 and the thickness of the elastic collar is equal to the depth of the installation groove 5. Therefore, the embodiment can not only ensure that the clamped and contracted size of the elastic check ring is just proper, but also ensure that the elastic check ring is not excessively squeezed between the mounting groove 5 and the clamping jaw 1 to generate plastic deformation. The height dimension of the upper position and the lower position of the boss 4 is designed according to the height of an elastic check ring installation groove 5 of the shaft part 6, the height of the boss 4 is slightly lower than the height of the installation groove 5, the clamping jaw 1 is guaranteed to be always kept at the correct installation height in the tightening process, and the deformed elastic check ring can be slowly pushed back into the installation groove 5.

According to one embodiment of the invention the height of the boss 4 is greater than the height of the circlip.

The design size of the clamping jaw 1 in the embodiment of the invention can ensure that the deformed elastic check ring returns to the correct mounting position, and can control the elastic check ring to completely enter the part mounting groove 5 without deformation after the elastic check ring is extruded, thereby solving the problems that the elastic check ring is deformed and the next-step assembly of the shaft part 6 is influenced after manual assembly.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A circlip fastening and restoring device is characterized by comprising

A clamping jaw; the clamping jaws are symmetrically arranged along the circumferential direction and used for clamping and sleeving the shaft parts of the elastic check ring and fastening the elastic check ring; the front end of the clamping jaw is arc-shaped, and a boss is arranged in the arc along the inner edge of the front end of the clamping jaw; the boss is matched with a mounting groove for mounting the elastic check ring on the shaft part, and the clamping jaws jointly embrace the boss so that the boss can be embedded into the mounting groove and tightly pressed outside the elastic check ring

A power element cylinder; and the power element air cylinders are arranged on the clamping jaws and drive the clamping jaws to clamp or open.

2. The fastener reducing apparatus of claim 1, wherein the number of the jaws is three, and three of the jaws embrace a circle.

3. The fastening recovery device of claim 1, wherein the sum of the protrusion length of the boss and the thickness of the circlip is equal to the depth of the mounting groove.

4. The fastener restoration device according to claim 1, wherein the boss height is greater than the circlip height.