CN219432195U

CN219432195U - Cylinder and cylinder bottom connecting structure

Info

Publication number: CN219432195U
Application number: CN202320606590.7U
Authority: CN
Inventors: 周永青; 赵伟峰
Original assignee: Kunshan Youjiaxin Machinery Equipment Co ltd
Current assignee: Kunshan Youjiaxin Machinery Equipment Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-07-28
Anticipated expiration: 2033-03-24

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to a connecting structure of a cylinder barrel and a cylinder bottom. It has solved the current locking force low and the poor problem of fixed effect. The novel elastic reset device comprises a first component and a second component, wherein the first component is of a shaft structure, an external thread is axially arranged at one end of the first component, the second component is of a shaft structure, an internal thread groove is axially arranged at one end of the second component, the internal thread groove is connected with the external thread in a matched mode, a positioning piece is coaxially arranged on the end face of the first component, provided with the external thread, an elastic reset piece capable of circumferentially shrinking and deforming is arranged on the inner side of the internal thread groove, and the first component and the second component are in contact with the elastic reset piece under the action of the positioning piece before being screwed in place, so that the elastic reset piece is compressed. The utility model is beneficial to keeping the first component and the second component in a stable locking state, has strong locking force, solves the problem that two coaxially-installed shaft parts cannot be stably fixed, and has good fixing effect.

Description

Cylinder and cylinder bottom connecting structure

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a connecting structure of a cylinder barrel and a cylinder bottom.

Background

Hydraulic cylinders are actuators that convert hydraulic energy into mechanical energy and are widely used in various machines. The hydraulic cylinder has the characteristics of high working strength and high working pressure, so that the high reliability of the cylinder body strength is required, and the connection of the cylinder barrel and the cylinder bottom is one of key technologies.

At present, two coaxially installed shaft parts are fixed by adopting a threaded connection mode, and parts on an oil cylinder are also accurately corresponding to a cylinder barrel and a cylinder bottom which need to be coaxially installed; however, the existing locking force is low, the reverse rotation can be used for releasing fixation along the spiral direction, so that the existing threaded connection mode cannot stably fix two coaxially-installed shaft parts, and the fixing effect is poor.

Disclosure of Invention

The utility model provides a connecting structure of a cylinder barrel and a cylinder bottom, which is favorable for keeping a first component and a second component in a stable locking state, has strong locking force, and solves the problem that two coaxially-installed shaft parts cannot be stably fixed, and has good fixing effect.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a connection structure at cylinder and cylinder bottom, includes first part and second part, first part is the axle type structure, one end department axial of first part is equipped with the external screw thread, the second part is the axle type structure, one end department axial of second part is equipped with the internal thread groove, the internal thread groove is connected with the external screw thread cooperation, coaxial setting element that is equipped with on the terminal surface of external screw thread is equipped with to first part, the inboard in internal thread groove is equipped with the elasticity reset piece that can circumferential shrinkage warp, first part and second part screw thread are screwed up before the effect of setting element and are contacted elasticity reset piece and make elasticity reset piece compress.

Further, the elastic reset piece comprises an elastic body, a first limiting piece and a second limiting piece, the elastic body is arranged on the inner side of the internal thread groove, the first limiting piece and the second limiting piece are symmetrically arranged on the inner side of the inner end part of the elastic body, the positioning piece is sequentially close to the first limiting piece and the second limiting piece along the rotation direction of the first component, and the height of the second limiting piece is larger than that of the first limiting piece.

Further, the locating piece is in a rod shape, the outer end of the locating piece is in a sphere shape, and the end part of the locating piece is matched and retracted between the first limiting piece and the second limiting piece after the end part of the locating piece passes over the first limiting piece after the first component and the second component are screwed in place.

Further, the first limiting piece and the second limiting piece are arc-shaped, and the outer ends of the positioning pieces are fit and attached in the first limiting piece and the second limiting piece.

Further, the elastic body is a spiral spring, and the first limiting piece and the second limiting piece are arranged on the inner side of the inner end part of the spiral spring.

The utility model has the beneficial effects that:

the locking mechanism is beneficial to enabling the first component and the second component to keep a stable locking state, has strong locking force, solves the problem that two coaxially-installed shaft parts cannot be stably fixed, and has good fixing effect.

Drawings

FIG. 1 is a structural cross-sectional view of the present cylinder and bottom connection structure;

FIG. 2 is a cross-sectional view of the structure at A-A in FIG. 1;

FIG. 3 is a schematic view of the structure of the positioning member and the elastic restoring member when they are engaged;

reference numerals illustrate:

1. a first component; 2. a second component; 3. an external thread; 4. an internal thread groove; 5. a positioning piece; 6. an elastic reset piece; 61. an elastic body; 62. a first limiting piece; 63. and the second limiting piece.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1-3, a connecting structure of a cylinder barrel and a cylinder bottom comprises a first component 1 and a second component 2, wherein the first component 1 is in a shaft structure, an external thread 3 is axially arranged at one end of the first component 1, the second component 2 is in a shaft structure, an internal thread groove 4 is axially arranged at one end of the second component 2, the internal thread groove 4 is connected with the external thread 3 in a matched manner, a positioning piece 5 is coaxially arranged on the end surface of the first component 1 provided with the external thread 3, an elastic reset piece 6 capable of circumferentially shrinking and deforming is arranged on the inner side of the internal thread groove 4, and the first component 1 and the second component 2 are in contact with the elastic reset piece 6 under the action of the positioning piece 5 before being screwed in place, so that the elastic reset piece 6 is compressed.

In this embodiment, the elastic restoring member 6 includes an elastic body 61, a first limiting plate 62 and a second limiting plate 63, where the elastic body 61 is disposed at an inner side of the internal thread groove 4, the first limiting plate 62 and the second limiting plate 63 are symmetrically disposed at an inner side of an inner end of the elastic body 61, the positioning member 5 sequentially approaches the first limiting plate 62 and the second limiting plate 63 along a rotation direction of the first component 1, and a height of the second limiting plate 63 is greater than a height of the first limiting plate 62.

In this embodiment, the positioning member 5 is rod-shaped, the outer end of the positioning member 5 is a sphere, and the end of the positioning member 5 passes over the first limiting piece 62 before the first component 1 and the second component 2 are screwed in place, and then is matched and retracted between the first limiting piece 62 and the second limiting piece 63.

In this embodiment, the first limiting piece 62 and the second limiting piece 63 are arc-shaped, and the outer end of the positioning piece 5 is fit and attached in the first limiting piece 62 and the second limiting piece 63.

In this embodiment, the elastic body 61 is a spiral spring, and the first limiting piece 62 and the second limiting piece 63 are disposed inside the inner end of the spiral spring.

Working principle: the first component 1 and the second component 2 of the present application correspond to the cylinder barrel and the cylinder bottom respectively, and can clearly correspond to the installation states of the cylinder barrel and the cylinder bottom, and the following description adopts the first component 1 and the second component 2;

when in use, the first component 1 and the second component 2 are gradually close to each other in a threaded fit connection mode, so that the coaxiality of the first component 1 and the second component 2 is kept unchanged, before the first component 1 and the second component 2 are screwed in place, the locating piece 5 is sequentially close to the first locating piece 62 and the second locating piece 63 along the rotation direction of the first component 1, the height of the second locating piece 63 is larger than that of the first locating piece 62, the first locating piece 62 which is firstly crossed by the locating piece 5 is abutted against the second locating piece 63, the locating piece 5 and the first component 1 synchronously move towards the second component 2 in the axial direction, the end part of the locating piece 5 in the shape of a sphere is stably inserted between the first locating piece 62 and the second locating piece 63, with the continuous threaded fit connection of the first component 1 and the second component 2, the scroll spring is compressed until the scroll spring is further compressed when the first component 1 and the second component 2 are screwed in place, and the elastic potential energy of the compression of the scroll spring is converted into radial shearing force by the action force of the end part of the scroll spring on the positioning piece 5, so that the action force on the first component 1 is effectively enhanced, the first component 1 and the second component 2 can not be kept in a stable locking state, the locking force is strong, the problem that two coaxially installed shaft parts cannot be stably fixed is solved, and the fixing effect is good; when the first component 1 and the second component 2 are required to be separated, the first component 1 and the second component 2 are required to be reversely rotated along the internal thread groove 4, and the fixing effect is good.

All technical features in the embodiment can be freely combined according to actual needs.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The foregoing embodiments are preferred embodiments of the present utility model, and other embodiments are included, without departing from the spirit of the present utility model.

Claims

1. A connecting structure of a cylinder barrel and a cylinder bottom comprises a first component and a second component, and is characterized in that,

the first part is the axle type structure, the axial of one end department of first part is equipped with the external screw thread, the second part is the axle type structure, one end department of second part is the axial and is equipped with the internal thread groove, the internal thread groove is connected with the external screw thread cooperation, coaxial setting element that is equipped with on the terminal surface of external screw thread is equipped with to the first part, the inboard in internal thread groove is equipped with the elasticity reset piece that can circumferential contraction warp, contact elasticity reset piece and make elasticity reset piece compress under the effect of setting element before first part and second part screw up in place.

2. The cylinder barrel and cylinder bottom connecting structure according to claim 1, wherein the elastic resetting piece comprises an elastic body, a first limiting piece and a second limiting piece, the elastic body is arranged on the inner side of the internal thread groove, the first limiting piece and the second limiting piece are symmetrically arranged on the inner side of the inner end part of the elastic body, the positioning piece is sequentially close to the first limiting piece and the second limiting piece along the rotating direction of the first component, and the height of the second limiting piece is larger than that of the first limiting piece.

3. The cylinder and bottom connecting structure of claim 2, wherein the positioning member is rod-shaped, the outer end of the positioning member is sphere-shaped, and the end of the positioning member is retracted between the first and second limiting pieces after passing over the first limiting piece before the first and second members are screwed in place.

4. A cylinder and cylinder bottom connecting structure as claimed in claim 3, wherein the first and second limiting pieces are arc-shaped, and the outer ends of the positioning pieces are fit and attached in the first and second limiting pieces.

5. The cylinder and bottom connecting structure of claim 2, wherein the elastic body is a scroll spring, and the first and second stopper pieces are provided inside an inner end portion of the scroll spring.