CN211009358U

CN211009358U - Self-tapping cylinder structure

Info

Publication number: CN211009358U
Application number: CN201921628272.0U
Authority: CN
Inventors: 胡正慎; 胡正顺
Original assignee: Wuxi Jufan Technology Co ltd
Current assignee: Wuxi Jufan Technology Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-07-14
Anticipated expiration: 2029-09-27

Abstract

The utility model belongs to the technical field of the cylinder, a cylinder structure from tapping is related to, including the protecgulum that has the hydraulic fluid port that advances, the back lid that has the back hydraulic fluid port, centre gripping and can be in the cylinder on the cylinder between protecgulum and the back lid and be fixed in the piston rod axial displacement's piston, the cylinder includes the barrel and radially outstanding a plurality of bar in the barrel outside fixed ridge, the processing has a parallel to in the fixed ridge of bar the fixed unthreaded hole of the axis of barrel, the self tapping screw all is equipped with at the both ends of every fixed unthreaded hole, set up a plurality of preceding equipment holes that are used for installing the self tapping screw on the protecgulum, cover after and set up a plurality of back equipment holes that are used for installing the self tapping screw. The cylinder barrel has the advantages that the structure of the cylinder barrel keeps round inside, the processing is convenient, and the deformation problem caused by the use of the pull rod is avoided.

Description

Self-tapping cylinder structure

Technical Field

The utility model relates to a cylinder technical field, in particular to cylinder structure from tapping.

Background

The traditional cylinder adopts a four-pull-rod and pull-rod nut mode to connect the end cover and the cylinder barrel together. When the travel of the pull rod cylinder is long, the pull rod can deform due to gravity and pressure, so that air leakage of the cylinder is caused, and troubles are brought to production. In a long-stroke tie rod cylinder, in order to avoid the deformation phenomenon of a tie rod caused by gravity, a middle seat is generally added at the center of a cylinder barrel to improve the supporting force, so that the cylinder becomes heavy, the structure becomes large, and the cost becomes high.

Therefore, in order to avoid the deformation of the pull rod due to the long stroke, simplify the structure and reduce the cost, it is necessary to provide a screw for locking the end cover and the cylinder barrel without the pull rod and the nut, so as to overcome the defects in the prior art.

Disclosure of Invention

The main object of the utility model is to provide a cylinder structure from tapping.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a self-tapping cylinder structure comprises a front cover with a front oil inlet, a rear cover with a rear oil inlet, a cylinder barrel clamped between the front cover and the rear cover by fastening screws, and a piston fixed on a piston rod and capable of axially moving in the cylinder barrel, wherein the cylinder barrel comprises a barrel body and a plurality of strip-shaped fixing ridges protruding out of the outer side of the barrel body in the radial direction, fixing unthreaded holes parallel to the axis of the barrel body are machined in the strip-shaped fixing ridges, self-tapping screws are arranged at two ends of each fixing unthreaded hole, a plurality of front assembly holes used for installing the self-tapping screws are formed in the front cover, and a plurality of rear assembly holes used for installing the self-tapping screws are formed in the rear cover.

Specifically, the strip-shaped fixing ridges are uniformly distributed around the axis of the cylinder body.

Furthermore, four strip-shaped fixing ridges are arranged around the cylinder, and the front cover and the rear cover are of square structures.

Specifically, the front assembly hole and the rear assembly hole are stepped holes with the depth larger than the thickness of the screw cap part of the self-tapping screw.

Specifically, the self-tapping screw is provided with an inner hexagonal stepped counter bore.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

the cylinder barrel has the advantages that the structure of the cylinder barrel keeps round inside, the processing is convenient, and the deformation problem caused by the use of the pull rod is avoided.

Drawings

FIG. 1 is a cross-sectional view of a cylinder of an embodiment in rotation;

FIG. 2 is a left side view of the cylinder barrel;

FIG. 3 is a full sectional view of the cylinder barrel;

FIG. 4 is a partial cross-sectional view of the self-tapping screw;

fig. 5 is a left side view of the self-tapping screw.

Labeled as:

1-front cover, 11-front oil inlet, 12-front assembling hole;

2-rear cover, 21-rear oil inlet and 22-rear assembly hole;

3-cylinder, 31-cylinder, 32-strip-shaped fixed ridge, 33-fixed unthreaded hole;

4-a piston rod;

5-self-tapping screw, 51-inner hexagonal stepped counter bore.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

as shown in fig. 1, a self-tapping cylinder structure includes a front cover 1 having a front oil inlet 11, a rear cover 2 having a rear oil inlet 21, a cylinder 3 clamped between the front cover 1 and the rear cover 2, and a piston (not shown) fixed on a piston rod 4 and capable of moving axially in the cylinder 3, wherein the cylinder 3 includes a cylinder 31 and a plurality of strip-shaped fixing ridges 32 protruding radially outside the cylinder 31, fixing unthreaded holes 33 parallel to an axis of the cylinder 31 are formed in the strip-shaped fixing ridges 32, self-tapping screws 5 are mounted at two ends of each fixing unthreaded hole 33, a plurality of front assembly holes 12 for mounting the self-tapping screws 5 are formed in the front cover 1, and a plurality of rear assembly holes 22 for mounting the self-tapping screws 5 are formed in the rear cover 2. The strip-shaped fixing ridges 32 improve the structural stability of the cylinder barrel 3, keep the interior round and convenient to process; on the other hand, the parallelism of the fixed unthreaded hole 33 and the axis is ensured, and the deformation problem caused by the use of a pull rod is avoided.

As shown in fig. 2, the strip-shaped fixing ridges 32 are uniformly distributed around the axis of the cylinder 31. Thus, the strip-shaped fixing ridges 32 can ensure that the barrel 31 has more uniform support at all positions, and ensure the concentricity and the verticality between the components. In practice, the four strip-shaped fixing ridges 32 of the present embodiment are not limited to the above embodiments, and more than three strips may serve a good supporting purpose.

As shown in fig. 2 and 3, the cylinder 31 has four strip-shaped fixing ridges 32 around it, and the front cover 1 and the rear cover 2 have a square structure. The front cover 1 and the rear cover 2 are conveniently processed when being in a square structure, and are conveniently matched with the arrangement of the strip-shaped fixed ridges 32.

As shown in fig. 1, the front assembly hole 12 and the rear assembly hole 22 are stepped holes each having a depth greater than the thickness of the nut portion of the tapping screw 5. During assembly, the self-tapping screw 5 can be screwed until being hidden in the assembly hole, so that the appearance of the cylinder is simpler.

As shown in fig. 1, 4 and 5, the tapping screw 5 is provided with an inner hexagonal stepped counterbore 51. The hexagonal stepped counter bore 51 can be matched with the hexagonal head of the pneumatic tool to provide torque for the self-tapping screw 5, and the thread of the self-tapping screw 5 forms an internal thread in the fixing unthreaded hole 33 under the action of the torque, so that the front cover 1, the rear cover 2 and the cylinder 3 are locked together.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a cylinder structure from tapping, is including having the protecgulum that advances the hydraulic fluid port, having the back lid of back hydraulic fluid port, with fastening screw centre gripping in the cylinder between protecgulum and back lid and be fixed in the piston rod on and can be in the piston of the axial displacement in the cylinder, its characterized in that: the cylinder barrel comprises a barrel body and a plurality of strip-shaped fixing ridges protruding out of the outer side of the barrel body in the radial direction, fixing unthreaded holes parallel to the axis of the barrel body are machined in the strip-shaped fixing ridges, self-tapping screws are mounted at two ends of each fixing unthreaded hole, a plurality of front assembling holes used for mounting the self-tapping screws are formed in the front cover, and a plurality of rear assembling holes used for mounting the self-tapping screws are formed in the rear cover.

2. The cylinder structure according to claim 1, characterized in that: the strip-shaped fixing ridges are uniformly distributed around the axis of the cylinder body.

3. The cylinder structure according to claim 2, characterized in that: four strip-shaped fixing ridges are arranged around the cylinder body, and the front cover and the rear cover are of square structures.

4. The cylinder structure according to claim 1, characterized in that: the front assembly hole and the rear assembly hole are stepped holes with the depth larger than the thickness of the screw cap part of the tapping screw.

5. The cylinder structure according to claim 1, wherein: the self-tapping screw is provided with an inner hexagonal stepped counter bore.