CN214367009U

CN214367009U - Motion module and single-acting cylinder capable of preventing motion component from being separated

Info

Publication number: CN214367009U
Application number: CN202120222710.4U
Authority: CN
Inventors: 高新新; 魏山虎; 蒋晔; 尤士清; 窦云霞
Original assignee: Suzhou Player Creater Electrical And Mechanical Technology Co ltd; Suzhou Xindeli Dynamo Electric Technology Co ltd
Current assignee: Suzhou Player Creater Electrical And Mechanical Technology Co ltd; Suzhou Xindeli Dynamo Electric Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-08
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a prevent module and single-action cylinder of actuating that motion component deviate from, the motion component is piston rod assembly, the module of actuating includes the cylinder body of no rear end cap and sets up the elastic component between piston rod assembly and cylinder body, piston rod assembly includes the piston rod, the outside of cylinder body is stretched out from the front portion of cylinder body to the piston rod, the module of actuating still pops out the holding device of the outside of cylinder body including the rear portion that is used for preventing the piston rod assembly at the following cylinder body of the elastic force effect of elastic component, holding device sets up on the piston rod and is located the part that the piston rod stretches out the outside of cylinder body. This prevent that retaining device of actuating module that motion component deviates from sets up on the piston rod, and its space size that occupies is little, and it is located the outside of cylinder body moreover, need not to consider the sealed problem between retaining device and the cylinder body, low in manufacturing cost has greatly improved the technical and economic index price/performance ratio of product.

Description

Motion module and single-acting cylinder capable of preventing motion component from being separated

Technical Field

The utility model relates to a fluid drive executive component technical field, concretely relates to prevent module and single-action jar that actuates that motion component deviates from.

Background

As shown in fig. 1, a single-acting hydraulic or pneumatic cylinder generally comprises a cylinder body 1 ', a piston rod assembly 2 ' and a spring 3 '. In the prior art, in order to prevent the piston rod assembly 2 'from being ejected from the rear end of the cylinder 1' by the elastic force of the spring 3 ', a holding means must be provided at the rear end of the cylinder 1'. In the prior art, the retaining device is a rear end cover 11 ' which is arranged at the rear end of the cylinder body 1 ' and has a threaded structure, and due to the existence of the rear end cover 11 ', the retaining device not only occupies larger axial and radial size space, but also has higher manufacturing cost. The rear end cover 11 ' only plays a role of holding, and after the single-action hydraulic cylinder or the air cylinder is connected with the workbench 100 ' and installed, the rear end cover 11 ' has no functional significance, which undoubtedly causes great waste.

Disclosure of Invention

The utility model aims at providing a modified prevents that motion component deviates from to not enough among the prior art actuates module

In order to achieve the above purpose, the utility model adopts the technical scheme that:

an actuating module for preventing a moving member from being pulled out, wherein the moving member is a piston rod assembly, the actuating module comprises a cylinder without a rear end cover and an elastic piece arranged between the piston rod assembly and the cylinder, the piston rod assembly comprises a piston rod, the piston rod extends out of the cylinder from the front part of the cylinder, the actuating module further comprises a retaining device for preventing the piston rod assembly from being ejected out of the cylinder from the rear part of the cylinder under the elastic force of the elastic piece, and the retaining device is arranged on the piston rod and positioned on the part of the piston rod extending out of the cylinder.

Preferably, the retaining means is detachably arranged on the piston rod, the retaining means being arranged on the piston rod when the actuation module is not mounted, the retaining means being separated from the piston rod when the actuation module is mounted.

Further, the front end of the piston rod is provided with a pin hole extending along the radial direction of the piston rod, the retaining device comprises a stop pin detachably arranged in the pin hole, when the actuating module is not installed, the stop pin is inserted in the pin hole, the outer circumferential surface of the stop pin abuts against the front end surface of the cylinder body, and when the actuating module is installed, the stop pin is removed from the pin hole.

Further, the preceding tip of piston rod is provided with the edge the pinhole that the radial direction of piston rod extends, retention device includes that detachably sets up backing pin and detachably in the pinhole establish the spacer sleeve of the preceding tip of piston rod works as when actuating the module and not installing, the backing pin is inserted and is established in the pinhole, the spacer sleeve is established on the piston rod, the outer periphery of backing pin supports to be established on the preceding terminal surface of spacer sleeve, the rear end face of spacer sleeve supports to be established on the preceding terminal surface of cylinder body, works as actuate module installation back, the backing pin with the spacer sleeve all follows remove on the piston rod.

Preferably, the retaining means is fixedly arranged on the piston rod.

Further, the retaining device comprises a fixing sleeve fixedly sleeved at the front end of the piston rod, and when the actuating module is not installed, the rear end face of the fixing sleeve abuts against the front end face of the cylinder body.

Preferably, the actuation module further comprises a first seal disposed between the cylinder and the piston rod assembly.

Further, the piston rod assembly further comprises a piston fixedly arranged opposite to the piston rod, and the first sealing element is arranged on the piston and used for sealing a gap between the piston and the cylinder body.

Further, the cylinder body comprises a cylinder barrel with the hollow cavity and a front end cover fixedly arranged at the front end of the cylinder barrel and provided with a mounting hole, and the first sealing element is arranged on the front end cover and used for sealing a gap between the piston rod and the front end cover.

The utility model also provides a single-action jar that prevents that the motion component from deviating from, include as above-mentioned arbitrary the module that actuates.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model provides a prevent module structure that actuates that motion component deviates from for prevent that the piston rod subassembly from setting up on the piston rod from the retaining device that the rear end of cylinder body popped out under the effect of the elastic force of elastic component, its space size that occupies is little, and it is located the outside of cylinder body moreover, need not to consider the sealed problem between retaining device and the cylinder body, low in manufacturing cost has greatly improved the technical and economic index price/performance ratio of product.

Drawings

FIG. 1 is a longitudinal cut-away schematic view of a single acting hydraulic or pneumatic cylinder of the prior art;

fig. 2 is a longitudinal sectional view of the actuating module for preventing the moving member from coming off according to the present invention (embodiment 1, when the actuating module is not installed);

fig. 3 is a longitudinal sectional view of the actuating module for preventing the moving member from coming off (embodiment 1, after the actuating module is installed);

fig. 4 is a longitudinal sectional view of the actuating module for preventing the moving member from coming off according to the present invention (embodiment 2, when the actuating module is not installed);

fig. 5 is a longitudinal sectional view of the actuating module for preventing the moving member from coming off according to the present invention (embodiment 2, after the actuating module is installed);

fig. 6 is a longitudinal sectional view of the actuation module for preventing the moving member from coming off according to the present invention (embodiment 3).

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Example 1

Referring to fig. 2 and 3, the actuating module for preventing the moving member from being released according to the present invention includes a cylinder 1, a piston rod assembly 2, and an elastic member 3.

The cylinder body 1 has no rear end cover, and the cylinder body 1 comprises a cylinder barrel 11 with a hollow cavity and a front end cover 12 which is fixedly arranged at the front end of the cylinder barrel 11 and is provided with a mounting hole. In this embodiment, the cylinder tube 11 and the front end cover 12 are integrally provided to form the integrated cylinder block 1.

The piston rod assembly 2 comprises a piston 21 and a piston rod 22 which are fixedly arranged relatively, and a first sealing member 41 is arranged between the piston rod assembly 2 and the cylinder 1. In this embodiment, the first sealing member 41 is disposed on the piston 21 to seal a gap between the outer peripheral wall of the piston 21 and the inner peripheral wall of the cylinder 11, so that the piston 21 divides the hollow cavity of the cylinder 11 into two mutually isolated actuating chambers, and the piston rod 22 passes through one of the actuating chambers, is axially slidably fitted into the mounting hole of the front end cover 12, and extends from the front end of the cylinder 1 to the outside of the cylinder 1 through the mounting hole.

A second seal 42 is provided at the rear end of the cylinder 11, and the second seal 42 seals the contact surface between the actuating module and the other member after the actuating module is connected to the other member.

One end of the elastic element 3 is disposed on the front end cover 12, the other end of the elastic element 3 is disposed on the piston 21, and the elastic force of the elastic element 3 is used for driving the piston rod assembly 2 to slide backwards in the hollow cavity of the cylinder 11. In this embodiment, the elastic member 3 is a spring.

The actuating module further includes a holding means for preventing the moving member, i.e., the piston rod assembly 2, from sliding backward relative to the cylinder 1 by the elastic force of the elastic member 3 to be ejected from the rear of the cylinder 1 to the outside of the cylinder 1, the holding means being provided at the front end portion of the piston rod 22 on the portion of the piston rod 22 protruding to the outside of the cylinder 1. I.e. the retaining means are located outside the cylinder 1, so that no sealing problems between the retaining means and the cylinder 1 need to be considered.

In the present embodiment, the holding means is detachably provided on the piston rod 22, the holding means is provided on the piston rod 22 when the movable module is not mounted, and the holding means is separated from the piston rod 22 when the movable module is mounted.

Specifically, the front end portion of the piston rod 22 is provided with a pin hole 221 extending in the radial direction of the piston rod 22, and the holding means includes a stopper pin 5 detachably provided in the pin hole 221, and the axial center line of the stopper pin 5 is perpendicular to the axial center line of the piston rod 22.

When the actuating module is not installed, the stop pin 5 is inserted into the pin hole 221, and the outer circumferential surface of the stop pin 5 abuts against the front end surface of the cylinder body 1, thereby forming a stop, so that the piston rod assembly 2 cannot slide backward and slide out of the cylinder body 1 under the elastic force of the elastic member 3, as shown in fig. 2.

When the actuating module is installed with the working platform 100, the working platform 100 is located at the rear of the cylinder 1, and forms a stop for the piston rod assembly 2, so that the piston rod assembly 2 is prevented from sliding backwards relative to the cylinder 1 under the elastic force of the elastic member 3 and sliding out of the cylinder 1, and the stop pin 5 can be removed from the pin hole 221, as shown in fig. 3.

During operation of the actuation module, the stop pin 5 remains removed from the pin hole 221, i.e. the holding means is separated from the piston rod 22.

Example 2

As shown in fig. 4 and 5, in this embodiment, a first sealing member 41 is disposed on the front cover 12 for sealing the gap between the outer peripheral wall of the piston rod 22 and the inner peripheral wall of the front cover 12, and the actuating chambers at both ends of the piston 21 are communicated, and the output force of the actuating module is related to the diameter of the piston rod 22.

In this embodiment, in order to prevent the first sealing member 41 from being damaged by shearing when the actuation module is assembled, the end of the piston rod 22 extending out of the cylinder 1, i.e. the front end, is provided with a conical surface, which serves as a guide when the first sealing member 41 is installed.

In this embodiment, the holding means is also detachably provided on the piston rod 22, the holding means being provided on the piston rod 22 when the movable module is not mounted, and the holding means being separated from the piston rod 22 when the movable module is mounted.

Specifically, the front end of the piston rod 22 is provided with a pin hole 221 extending along the radial direction of the piston rod 22, the retaining device comprises a stop pin 61 detachably disposed in the pin hole 221 and a stop sleeve 62 detachably sleeved on the piston rod 22, the axial line of the stop pin 61 is perpendicular to the axial line of the piston rod 22, and the axial line of the stop sleeve 62 is collinear with the axial line of the piston rod 22.

When the actuating module is not installed, the stop pin 61 is inserted into the pin hole 221, the stop sleeve 62 is sleeved on the piston rod 22, the outer circumferential surface of the stop pin 61 abuts against the front end surface of the stop sleeve 62, and the rear end surface of the stop sleeve 62 abuts against the front end surface of the cylinder body 1, so that a stop is formed, and the piston rod assembly 2 cannot slide backwards under the action of the elastic force of the elastic member 3 and slide out of the cylinder body 1, as shown in fig. 4.

When the actuating module is mounted on the working platform 100, the working platform 100 is located at the rear of the cylinder 1, and forms a stop for the piston rod assembly 2, so that the piston rod assembly 2 is prevented from sliding backwards relative to the cylinder 1 under the elastic force of the elastic member 3 and sliding out of the cylinder 1, and at this time, the stop pin 61 is removed from the pin hole 221, and the stop sleeve 62 is removed from the piston rod 22, as shown in fig. 5.

During operation of the actuator module, the stop pin 61 remains removed from the pin hole 221, and the stop sleeve 62 remains removed from the piston rod 22, i.e. the retaining means is separated from the piston rod 22.

Example 3

As shown in fig. 6, in this embodiment, the first sealing member 41 may be disposed as in embodiment 1, or may be disposed as in embodiment 2.

In this embodiment, the retaining means is fixedly arranged on the piston rod 22, i.e. the retaining means is fixedly arranged on the piston rod 22 without being separated from the piston rod 22, whether the actuation module is in an uninstalled state or after installation with the table 100.

Specifically, the retaining device includes a fixing sleeve 7 fixedly sleeved on the front end of the piston rod 22, and when the actuating module is not installed, the rear end face of the fixing sleeve 7 abuts against the front end face of the cylinder 1, so as to form a stop, so that the piston rod assembly 2 cannot slide backwards under the elastic force of the elastic member 3 and slide out of the cylinder 1, as shown in fig. 6.

In this embodiment, the fixing sleeve 7 is arranged without affecting the stroke of the piston rod assembly 2 during the operation of the actuating module.

The utility model discloses a single-action jar that prevents that the motion component from deviating from is still disclosed, and this single-action jar includes foretell actuating the module.

To sum up, the utility model discloses a module of actuating that prevents that motion component from deviating from abandons traditional screw thread rear end cap's retention device, sets up retention device at the piston rod front end to solved the tradition and actuated retention device structure complicacy in the module, occupation space is big, high in manufacturing cost and the problem that needs radial seal, greatly improved the technical and economic index price/performance ratio of product. The actuating module can be applied to a single-acting cylinder.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. An actuating module for preventing a moving component from being released, wherein the moving component is a piston rod assembly, and is characterized in that: the actuating module comprises a cylinder body without a rear end cover and an elastic piece arranged between the piston rod assembly and the cylinder body, the piston rod assembly comprises a piston rod, the piston rod extends out of the front portion of the cylinder body to the outside of the cylinder body, the actuating module further comprises a retaining device used for preventing the piston rod assembly from popping out of the outside of the cylinder body from the rear portion of the cylinder body under the elastic force action of the elastic piece, and the retaining device is arranged on the piston rod and is positioned on the portion, extending out of the cylinder body, of the piston rod.

2. The actuation module for preventing the escape of a moving member according to claim 1, wherein: the retaining device is detachably arranged on the piston rod, the retaining device is arranged on the piston rod when the actuating module is not installed, and the retaining device is separated from the piston rod after the actuating module is installed.

3. The actuation module for preventing the escape of a moving member according to claim 2, wherein: the front end of the piston rod is provided with a pin hole extending along the radial direction of the piston rod, the retaining device comprises a stop pin detachably arranged in the pin hole, when the actuating module is not installed, the stop pin is inserted in the pin hole, the outer circumferential surface of the stop pin abuts against the front end surface of the cylinder body, and when the actuating module is installed, the stop pin is removed from the pin hole.

4. The actuation module for preventing the escape of a moving member according to claim 2, wherein: the preceding tip of piston rod is provided with the edge the pinhole that the radial direction of piston rod extends, retention device includes that detachably sets up backing pin and detachably in the pinhole establish the spacer sleeve of the preceding tip of piston rod works as when actuating the module and not installing, the backing pin is inserted and is established in the pinhole, the spacer sleeve is established on the piston rod, the outer periphery of backing pin supports to be established on the preceding terminal surface of spacer sleeve, the rear end face of spacer sleeve supports to be established on the preceding terminal surface of cylinder body, work as actuate module installation back, the backing pin with the spacer sleeve all follows remove on the piston rod.

5. The actuation module for preventing the escape of a moving member according to claim 1, wherein: the holding device is fixedly arranged on the piston rod.

6. The actuation module for preventing the escape of a moving member according to claim 5, wherein: the retaining device comprises a fixed sleeve fixedly arranged at the front end part of the piston rod, and when the actuating module is not installed, the rear end face of the fixed sleeve is abutted to the front end face of the cylinder body.

7. The actuation module for preventing the escape of a moving member according to claim 1, wherein: the actuation module further includes a first seal disposed between the cylinder and the piston rod assembly.

8. The actuation module for preventing the escape of a moving member of claim 7, wherein: the piston rod assembly further comprises a piston fixedly arranged opposite to the piston rod, and the first sealing element is arranged on the piston and used for sealing a gap between the piston and the cylinder body.

9. The actuation module for preventing the escape of a moving member of claim 7, wherein: the cylinder body comprises a cylinder barrel with a hollow cavity and a front end cover fixedly arranged at the front end of the cylinder barrel and provided with a mounting hole, and the first sealing element is arranged on the front end cover and used for sealing a gap between the piston rod and the front end cover.

10. A single-acting cylinder for preventing a moving member from coming out is characterized in that: comprising an actuation module according to any one of claims 1 to 9.