CN220227352U

CN220227352U - Amplitude-variable oil cylinder with high stability

Info

Publication number: CN220227352U
Application number: CN202320362623.8U
Authority: CN
Inventors: 卞伟林; 施春花; 袁华杰
Original assignee: Changzhou Li'an Hydraulic Equipment Co ltd
Current assignee: Changzhou Li'an Hydraulic Equipment Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-12-22
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of amplitude-variable oil cylinders and discloses an amplitude-variable oil cylinder with high stability, which comprises a cylinder bottom, wherein the cylinder bottom is detachably connected with a cylinder body through a stud and a nut, a piston rod assembly is arranged in the cylinder body, one side of the cylinder body, which is far away from the cylinder bottom, is detachably connected with an upper cover through the nut and the stud, one end of the piston rod assembly movably penetrates through the upper cover, a first oil hole is formed in the outer side of the cylinder bottom, and the other end of the first oil hole is communicated to the inside of the cylinder body. According to the utility model, the piston rod is arranged as the hollow piston rod, and under the condition that the piston rod of the oil cylinder extends out, the piston rod assembly is driven to move when the oil in the inner cavity of the piston rod assembly is filled, meanwhile, the oil can enter the head part (namely the T-shaped head) of the piston rod assembly through the second oil hole, so that the external force on a part of the piston rod assembly can be effectively resisted, and the stability of the compression bar of the piston rod assembly can be greatly improved.

Description

Amplitude-variable oil cylinder with high stability

Technical Field

The utility model relates to the technical field of amplitude variation oil cylinders, in particular to an amplitude variation oil cylinder with high stability.

Background

The cylinder (hydraulic cylinder) is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The oil cylinder has simple structure and reliable operation, and can avoid the speed reducer when being used for realizing reciprocating motion, and has no transmission clearance and stable motion, thereby being widely applied to hydraulic systems of various machines.

The prior patent (publication number: CN 209354463U) discloses a hydraulic amplitude cylinder, the hydraulic amplitude cylinder comprises a cylinder barrel, a piston rod, a first cylinder seat and a second cylinder seat, wherein the second cylinder seat is fixedly arranged with the piston rod, a nut is fixedly arranged in the cylinder barrel, the nut and the piston are correspondingly arranged, a connecting piece is arranged right above the cylinder barrel, a first oil way opening is arranged along the direction vertical to the axis of the cylinder barrel, a second oil way opening is arranged along the direction vertical to the axis of the cylinder barrel at the side of the first oil way opening, a first joint and a second joint are arranged at the two sides of the cylinder barrel, the first joint is communicated with the first oil way opening through a first pipeline, the first joint is communicated with a cavity at one side of the piston in the cylinder barrel, and the second joint is communicated with the second oil way opening through a second pipeline, and the second joint is communicated with a cavity at the other side of the piston in the cylinder barrel. According to the utility model, two independent control oil ways can be realized through the arrangement of the joint, the pipeline and the connecting piece.

In the process of implementing the present utility model, the inventor finds that at least the following problems in the prior art are not solved: when the prior art is used, the external force applied to the head part of the piston rod assembly is large, and a gap exists between the head part of the piston rod assembly and the front part of the cylinder body, so that the head part of the piston rod assembly is unstable.

Disclosure of Invention

The utility model aims to provide a variable amplitude oil cylinder with high stability so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a strong luffing cylinder of stability, includes the cylinder bottom, the cylinder bottom is connected with the cylinder body through double-screw bolt and nut is detachable, the inside of cylinder body is provided with the piston rod subassembly, one side that the cylinder body kept away from the cylinder bottom is connected with the upper cover through nut and double-screw bolt is detachable, the one end activity of piston rod subassembly runs through in the upper cover, first oilhole has been seted up in the outside of cylinder bottom, the other end of first oilhole communicates to the cylinder body inside, and this end of first oilhole is located the left end of piston rod subassembly, the third oilhole has been seted up in the outside of upper cover, the other end of third oilhole extends to the inner wall of upper cover, third oilhole and first oilhole pass through the pipe connection, be provided with hydro-cylinder locking valves on the pipeline;

the piston rod assembly is hollow, and the both sides of piston rod assembly are the opening, two the opening all communicates with its inner chamber, the T head is installed to the right-hand member of piston rod assembly, the left side of T head and the inner chamber adaptation of piston rod assembly, the inside at the piston rod assembly is inserted in the left side of T head, the left upper and lower both ends of T head all are provided with the second oilhole, two the other end of second oilhole all extends to the right side position of upper cover.

As a preferred embodiment of the utility model, one side of the inner wall of the upper cover, which is far away from the cylinder bottom, is abutted against the outer wall of the piston rod assembly through a sealing ring, and one side of the inner wall of the upper cover, which is close to the cylinder bottom, is abutted against the outer wall of the piston rod assembly through a sealing ring.

As a preferable implementation mode of the utility model, the left end of the piston rod assembly is T-shaped, the outer diameter of the left end of the piston rod assembly is matched with the inner wall of the inner cavity of the cylinder body, a gap exists between the outer wall of the piston rod assembly and the inner wall of the inner cavity of the cylinder bottom, and the inner end of the first oil hole is communicated with the gap.

As a preferred embodiment of the utility model, the other ends of the two second oil holes extend to the periphery of the T-shaped head, the other ends of the two second oil holes are positioned at the right side of the upper cover, and the outer ends of the two second oil holes are spirally connected with screw plugs.

As a preferred embodiment of the present utility model, a ladder is provided on the outer side of the cylinder, and both sides of the ladder extend to both sides of the cylinder, respectively.

In a preferred embodiment of the present utility model, the pipeline is located at one side of the ladder, and the pipeline is made of stainless steel.

Compared with the prior art, the utility model provides the amplitude-variable oil cylinder with strong stability, which comprises the following components

The beneficial effects are that:

this a strong luffing cylinder of stability through setting up the piston rod into hollow piston rod, under the condition that the cylinder piston rod stretches out, drives the piston rod subassembly motion when filling up owing to the fluid of piston rod subassembly inner chamber, simultaneously, fluid can effectively resist the external force on a part of piston rod subassembly through the head (i.e. in the T head) of second oilhole entering into the piston rod subassembly, will greatly improve the depression bar stability of piston rod subassembly.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a front view of a stable luffing cylinder of the present utility model;

fig. 2 is a top view of a stable luffing cylinder of the present utility model.

In the figure: 1. a cylinder bottom; 2. a cylinder; 3. a piston rod assembly; 4. an upper cover; 5. a first oil hole; 6. a third oil hole; 7. a pipeline; 8. locking the valve group by the oil cylinder; 9. a T-head; 10. a second oil hole; 11. and (5) climbing a ladder.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, a laser lamp brightness calibration device according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present utility model provides a technical solution: the utility model provides a strong luffing cylinder of stability, includes cylinder bottom 1, cylinder bottom 1 is connected with cylinder body 2 through double-screw bolt and nut is detachable, the inside of cylinder body 2 is provided with piston rod subassembly 3, the one side that cylinder body 2 kept away from cylinder bottom 1 is connected with upper cover 4 through nut and double-screw bolt is detachable, the one end activity of piston rod subassembly 3 runs through in upper cover 4, first oilhole 6 has been seted up in the outside of cylinder bottom 1, the other end of first oilhole 6 communicates to the cylinder body 2 inside, and the end of first oilhole 6 is located the left end of piston rod subassembly 3, third oilhole 5 has been seted up in the outside of upper cover 4, the other end of third oilhole 5 extends to the inner wall of upper cover 4, third oilhole 5 and first oilhole 6 are connected through pipeline 7, be provided with hydro-cylinder locking valves 8 on the pipeline 7;

the piston rod assembly 3 is hollow, and the both sides of piston rod assembly 3 are the opening, two the opening all communicates rather than the inner chamber, the T head 9 is installed to the right-hand member of piston rod assembly 3, the left side of T head 9 and the inner chamber adaptation of piston rod assembly 3, the inside at piston rod assembly 3 is inserted in the left side of T head 9, the upper and lower both ends of T head 9 left side all are provided with second oilhole 10, two the other end of second oilhole 10 all extends to the right side position of upper cover 4.

When the device is used, the piston rod assembly 3 is arranged to be of a hollow structure, under the condition that the cylinder piston rod assembly 3 stretches out, the piston rod assembly 3 is driven to move when the oil in the inner cavity of the piston rod assembly 3 is filled, meanwhile, the oil can enter the head part of the piston rod assembly 3 (namely, the inside of the T-shaped head 9) through the second oil hole 10, so that the external force on a part of the piston rod assembly 3 can be effectively resisted, and the compression bar stability of the piston rod assembly 3 can be greatly improved.

In this embodiment, the inner wall of upper cover 4 keeps away from the outer wall of cylinder bottom 1 and offsets through sealing washer and piston rod subassembly 3, the inner wall of upper cover 4 is close to the outer wall of cylinder bottom 1 and offsets through sealing washer and piston rod subassembly 3, can guarantee the seal of cylinder body 2 inner chamber, avoids fluid to spill over.

In this embodiment, the left end of piston rod subassembly 3 is the T type, the external diameter of piston rod subassembly 3 left end and the inner wall looks adaptation of cylinder body 2 inner chamber, there is the clearance between the outer wall of piston rod subassembly 3 and the inner wall of cylinder bottom 1 inner chamber, and the inner and this clearance intercommunication of first oilhole 6, the promotion of piston rod subassembly 3 is realized to the left side entering cylinder body 2 inner chamber of piston rod subassembly 3 of fluid, and fluid gets into cylinder body 2 inner chamber from first oilhole 6, can realize the reduction of piston rod subassembly 3.

In this embodiment, the other ends of the two second oil holes 10 extend to the periphery of the t-shaped head 9, the other ends of the two second oil holes 10 are located at the right side of the upper cover 4, screw plugs are spirally connected to the outer ends of the two second oil holes 10, and the second oil holes 10 can be sealed and opened by the screw plugs.

In this embodiment, a ladder 11 is disposed on the outer side of the cylinder 2, and two sides of the ladder 11 extend to two sides of the cylinder 2 respectively.

In this embodiment, the pipeline 7 is located at one side of the ladder 11, the pipeline 7 is made of stainless steel, and the ladder 11 is used for a user to regularly maintain the device and the pipeline 7 on the device.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a strong luffing cylinder of stability, includes cylinder bottom (1), cylinder bottom (1) are connected with cylinder body (2) through double-screw bolt and nut detachable, the inside of cylinder body (2) is provided with piston rod subassembly (3), its characterized in that: one side of the cylinder body (2) far away from the cylinder bottom (1) is detachably connected with an upper cover (4) through a nut and a stud, one end of the piston rod assembly (3) movably penetrates through the upper cover (4), a first oil hole (6) is formed in the outer side of the cylinder bottom (1), the other end of the first oil hole (6) is communicated to the inside of the cylinder body (2), the end of the first oil hole (6) is located at the left end of the piston rod assembly (3), a third oil hole (5) is formed in the outer side of the upper cover (4), the other end of the third oil hole (5) extends to the inner wall of the upper cover (4), the third oil hole (5) is connected with the first oil hole (6) through a pipeline (7), and an oil cylinder locking valve group (8) is arranged on the pipeline (7);

the piston rod assembly (3) is hollow, and the both sides of piston rod assembly (3) are the opening, two the opening all communicates rather than the inner chamber, T head (9) are installed to the right-hand member of piston rod assembly (3), the left side of T head (9) and the inner chamber adaptation of piston rod assembly (3), the inside at piston rod assembly (3) is inserted in the left side of T head (9), the left upper and lower both ends of T head (9) all are provided with second oilhole (10), two the other end of second oilhole (10) all extends to the right side position of upper cover (4).

2. The stable luffing cylinder of claim 1, wherein: one side of the inner wall of the upper cover (4) far away from the cylinder bottom (1) is propped against the outer wall of the piston rod assembly (3) through a sealing ring, and one side of the inner wall of the upper cover (4) close to the cylinder bottom (1) is propped against the outer wall of the piston rod assembly (3) through a sealing ring.

3. The stable luffing cylinder of claim 2, wherein: the left end of piston rod subassembly (3) is T type, the external diameter of piston rod subassembly (3) left end and the inner wall looks adaptation of cylinder body (2) inner chamber, there is the clearance between the outer wall of piston rod subassembly (3) and the inner wall of cylinder bottom (1) inner chamber, and the inner and this clearance intercommunication of first oilhole (6).

4. A stable luffing cylinder as defined in claim 3, wherein: the other ends of the two second oil holes (10) extend to the periphery of the T-shaped head (9), the other ends of the two second oil holes (10) are located at the right side of the upper cover (4), and screw plugs are spirally connected to the outer ends of the two second oil holes (10).

5. The stable luffing cylinder of claim 1, wherein: the outside of cylinder body (2) is provided with cat ladder (11), the both sides of cat ladder (11) extend to the both sides of cylinder body (2) respectively.

6. The high stability luffing cylinder of claim 5, wherein: the pipeline (7) is located on one side of the crawling ladder (11), and the pipeline (7) is made of stainless steel.