CN221683312U - A top oil cylinder with adjustable stroke - Google Patents

Abstract

The utility model relates to the technical field of oil cylinder structures, in particular to a stroke-adjustable top oil cylinder which comprises a fixed rotary seat and an oil cylinder body, wherein a threaded pipe is arranged on the left side of the fixed rotary seat, external threads are arranged on the outer side surface of the threaded pipe, a piston rod is arranged in the fixed rotary seat, a groove is arranged on the right side of the fixed rotary seat, the inside of the groove is in threaded connection with one side of the oil cylinder body, a piston is arranged in the oil cylinder body, and piston rods are arranged on the two sides of the piston. According to the utility model, the threaded pipe is arranged on one side of the fixed rotary seat, the threaded pipe and the structure to be installed are matched, so that the integral long stroke adjustment of the oil cylinder can be realized, the internal threads are arranged in the groove on the other side of the fixed rotary seat and matched with the internal threads at the left end of the cylinder body of the oil cylinder, and the internal stroke of the cylinder body of the oil cylinder can be accurately adjusted, thereby increasing the capacity of the oil cylinder for adapting to different working occasions, meeting different working requirements and improving the working efficiency.

Description

A top oil cylinder with adjustable stroke

Technical Field

The utility model relates to the technical field of oil cylinder structures, in particular to a top oil cylinder with adjustable stroke.

Background Art

A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When it is used to achieve reciprocating motion, the deceleration device can be eliminated, there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. When using the cylinder, it is necessary to strictly consider the occasions to which the cylinder is adapted, and it can meet different working requirements at the same time. The currently available adjustable cylinders are usually composed of a cylinder body, a piston, a piston rod, a seal, etc. By changing the length of the piston rod, the position of the piston can be changed, thereby achieving the adjustment of the stroke. Adjustable stroke hydraulic cylinders usually use a threaded connection method to change the stroke by rotating the piston rod. This method of changing the stroke by changing the piston rod has many restrictions on the use occasions. This method can only change the trajectory of the source's movement, and cannot well achieve the adjustment of the stroke.

Therefore, it is necessary to propose a technology to improve the above defects.

Utility Model Content

In view of the above-mentioned deficiencies and defects of the oil cylinder in the prior art, in order to achieve the above-mentioned purpose, the utility model provides a top oil cylinder with adjustable stroke, comprising:

A fixed rotary seat and a cylinder body, wherein a threaded tube is arranged on the left side of the fixed rotary seat, a piston rod is arranged on the inner side of the fixed rotary seat, a groove is arranged on the right side of the fixed rotary seat, the inside of the groove is threadedly connected with one side of the cylinder body, and a piston is arranged inside the cylinder body.

As a preferred technical solution, an internal thread is arranged inside the groove, and an external thread is arranged on the left side of the oil cylinder, and the internal thread is used in conjunction with the external thread.

As a preferred technical solution, it also includes an oil inlet and an oil outlet, wherein the oil inlet and the oil outlet are arranged on the outside of the fixed rotary seat and the outside of the cylinder body, and penetrate the fixed rotary seat and the cylinder body.

As a preferred technical solution, the front end of the piston is arranged in a stepped shape, an oil blocking block is arranged at the outer position of the middle part of the piston, the inside of the cylinder body is arranged in a stepped shape, and the parameter size of the cylinder body is consistent with the parameter size of the piston.

As a preferred technical solution, it also includes an outer cylinder body, which is arranged on the right side of the oil cylinder body, the outer cylinder body is fixedly connected to the oil cylinder body, and fastening bolts are also arranged around the other side of the outer cylinder body.

As a preferred technical solution, the piston rod includes a first piston rod and a second piston rod, the first piston rod is arranged on the left side of the piston, and the second piston rod is arranged on the right side of the piston, and the first piston rod and the second piston rod are fixedly connected to the left end face and the right end face of the piston respectively.

As a preferred technical solution, the externally threaded tube is fixedly connected to the left side of the fixed rotary seat, and the piston rod passes through the externally threaded tube and the fixed rotary seat.

As a preferred technical solution, the structure of the second piston rod is configured as a stepped shaft and is installed inside the outer cylinder body.

As a preferred technical solution, a limit step is provided on the inner wall of the outer cylinder body, and the limit step is used in conjunction with the second piston rod.

As described above, the top cylinder with adjustable stroke provided by the utility model has the following beneficial effects:

The utility model can adjust the overall structure of the oil cylinder according to actual production needs by arranging a threaded tube at one end of the fixed swivel seat, and in addition, a groove is arranged on the other side of the fixed swivel seat, an internal thread is arranged inside the groove, and an external thread is arranged on the outer side of the oil cylinder. Through the cooperation between the internal thread inside the groove and the external thread of the oil cylinder, the stroke of the oil cylinder can be adjusted, and the oil blocking block can also ensure the sealing ability inside the oil cylinder. The external thread on the threaded tube can realize coarse adjustment of the stroke of the oil cylinder, and the internal thread on the other side of the fixed swivel seat and the external thread of the oil cylinder can realize fine adjustment of the cylinder body, which greatly improves the working capacity of the oil cylinder and is conducive to the oil cylinder adapting to different working occasions and meeting the requirements of various working environments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram showing the structure of the present utility model;

FIG. 2 is an enlarged view of a local position in FIG. 1 .

1. Fixed swivel seat; 101. Groove; 2. Cylinder body; 3. Piston; 301. Oil block; 4. Piston rod; 401. First piston rod; 402. Second piston rod; 5. Threaded tube; 6. Outer cylinder body; 601. Limiting step; 7. Bolt; 8. Oil inlet; 9. Oil outlet.

DETAILED DESCRIPTION

The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated.

Example

The present embodiment provides a top oil cylinder with adjustable stroke. Referring to FIG1, the structure includes a fixed rotary seat 1, a cylinder body 2, a piston rod 4 and a piston 3. A threaded tube 5 is provided on the left side of the fixed rotary seat 1. The threaded tube 5 is provided with an external thread. The fixed rotary seat 1 and the threaded tube 5 are fixedly connected. The oil cylinder body 2 is provided on the right side of the fixed rotary seat 1, and a groove 101 is provided inside the right side of the fixed rotary seat 1. An internal thread is provided inside the groove 101. The internal thread inside the groove 101 cooperates with the external thread of the oil cylinder body 2 to form an internally closed cylinder. The oil inlet 8 and the oil outlet 9 are arranged around the outer side of the fixed rotating seat 1. In addition, a piston 3 is arranged inside the oil cylinder body 1. The piston 3 is arranged in a stepped shape. An oil blocking block 301 is arranged between the piston 3 and the cylinder body 1 to prevent the loss of hydraulic oil during the movement of the piston 3 and enhance its sealing ability. The inside of the oil cylinder body 2 is arranged in a stepped shape. The stepped limit size of the oil cylinder body 2 is consistent with the stepped size of the piston 3. The oil inlet 8 and the oil outlet 9 are arranged on the outer side of the oil cylinder body 2 to facilitate the addition and replacement of the hydraulic oil inside the oil cylinder body 2. An outer cylinder body 6 is also arranged on the other side of the oil cylinder body 2. The outer cylinder body 6 is fixedly connected to the right side of the oil cylinder body 2. Preferably, in this embodiment, the outer cylinder body 6 and the oil cylinder body 2 are fixedly connected by bolts, and a bolt 7 is also arranged on the right side of the outer cylinder body 6.

Still referring to Figure 1, the piston rod 4 includes a first piston rod 401 and a second piston rod 402. The first piston rod 401 and the second piston rod 402 are respectively arranged on the left and right end surfaces of the piston 3. In addition, the piston rods 4 are all stepped. A bolt 7 is also arranged on the outside of the first piston rod 401. The bolt 7 is arranged on the left side of the thread 5 to limit the moving position of the first piston rod 401. A limiting step 601 is arranged on the inner wall of the outer cylinder body 6 to limit the stroke of the second step shaft 402.

During use of the device, the threaded tube 5 and the structure to be installed are installed together through the external thread of the threaded tube 5. The device can be adjusted to a longer stroke by rotation, and the active position of the first piston rod 401 is limited by tightening the bolt 7 on the left side of the external thread 5. The external thread of the cylinder body 2 cooperates with the internal thread inside the groove 101 of the fixed rotary seat 1 to achieve precise adjustment of the stroke of the cylinder body.

To sum up, the utility model arranges a threaded tube on one side of the fixed swivel seat so that the cooperation between the threaded tube and the structure to be installed can achieve the adjustment of the longer stroke of the entire cylinder. The internal thread arranged in the groove on the other side of the fixed swivel seat and the internal thread at the left end of the cylinder body can cooperate with each other to achieve precise adjustment of the internal stroke of the cylinder body, thereby increasing the ability of the cylinder to adapt to different working occasions, meet different work requirements, and improve work efficiency.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims (9)

1. The utility model provides a stroke adjustable top hydro-cylinder, includes fixed seat and the hydro-cylinder body of spiraling, its characterized in that, the left side of fixed seat of spiraling is provided with the screwed pipe, the inboard of fixed seat of spiraling is provided with the piston rod, the right side of fixed seat of spiraling is provided with the recess, the recess inside with one side threaded connection of hydro-cylinder body, the inside piston that is provided with of hydro-cylinder body.

2. The stroke-adjustable top-end oil cylinder according to claim 1, wherein an internal thread is arranged in the groove, an external thread is arranged on the left side of the oil cylinder, and the internal thread is matched with the external thread.

3. The stroke-adjustable top-end cylinder according to claim 1, further comprising an oil inlet and an oil outlet, wherein the oil inlet and the oil outlet are provided outside the fixed rotary seat and outside the cylinder block, and penetrate through the inner wall of the fixed rotary seat and the inner wall of the cylinder block.

4. The stroke-adjustable top-end oil cylinder according to claim 1, wherein the front end of the piston is arranged in a step shape, an oil block is arranged at the outer side position of the middle part of the piston, the inside of the oil cylinder body is arranged in a step shape, and the parameter size of the oil cylinder body is consistent with the parameter size of the piston.

5. The stroke-adjustable top-end cylinder according to claim 1, further comprising an outer cylinder body, the outer cylinder body being provided on the right side of the cylinder body, the outer cylinder body being fixedly connected with the cylinder body, and bolts being further provided around the other side of the outer cylinder body.

6. The stroke-adjustable top-end cylinder as claimed in claim 5 wherein said piston rod comprises a first piston rod and a second piston rod, said first piston rod being disposed on the left side of said piston, said second piston rod being disposed on the right side of said piston, said first piston rod and said second piston rod being fixedly connected to the left end face and the right end face of said piston, respectively.

7. The stroke-adjustable top-end cylinder according to claim 1, wherein the threaded tube is fixedly connected to the left side of the fixed screw seat, and the piston rod passes through the threaded tube and the fixed screw seat.

8. The stroke-adjustable top-end cylinder as claimed in claim 6 wherein said second piston rod is configured as a stepped shaft and is mounted inside said outer cylinder.

9. The stroke-adjustable top-end cylinder as recited in claim 6 wherein the outer cylinder inner wall is provided with a limit step, the limit step being used in conjunction with a second piston rod.