CN216142999U

CN216142999U - Single-rod air cylinder anti-rotation device

Info

Publication number: CN216142999U
Application number: CN202122023797.5U
Authority: CN
Inventors: 张煜; 方荣; 黄志勇; 朱海彬
Original assignee: Shanghai Maqu Testing Technology Co ltd
Current assignee: Shanghai Maqu Testing Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-29
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses an anti-rotation device for a single-rod cylinder, and relates to the field of power devices. The utility model comprises a cylinder body and a piston rod; a positioning block with a limiting hole is fixedly arranged at the end cover part of the cylinder body through an L-shaped clamp, a loading plate is arranged at the end part of the piston rod, and a polished rod is in sliding limiting fit between the loading plate and the limiting hole of the positioning block; a bearing seat support is arranged at the end part of the polished rod, and a joint clamp is fixedly connected to the bottom of the bearing seat support; the top of the joint clamp is provided with a connecting seat connected with the bottom of the bearing seat support through a bolt, and the bottom of the connecting seat is provided with a connecting ring connected with the piston rod in a sleeved mode. The anti-rotation device has the advantages of simple clamp design, convenience in installation, strong practicability and low cost, and can effectively prevent the rotation of the cylinder, so that the universality of the cylinder in the experimental field is greatly enhanced.

Description

Single-rod air cylinder anti-rotation device

Technical Field

The utility model belongs to the field of power devices, and particularly relates to an anti-rotation device of a single-rod cylinder.

Background

Air cylinders are a common power plant, commonly used in automated equipment or laboratories. The device is mainly used for loading force and simulating the load applied to a test piece by a human in a laboratory; the cylinder is composed of a cylinder barrel, an end cover, a piston rod and a sealing element. Wherein the piston rod is the most important stressed part in the cylinder; high carbon steel, hard chrome plated on the surface, or stainless steel is generally used.

The piston rod can rotate when the single-rod cylinder is used; the rotation can change the position of the loading force of the cylinder, and the actual loading position can be changed, so that the static load test result is influenced. The device is suitable for limiting the rotation of the piston rod of the cylinder; the force values of different types of cylinders are different, and the cylinder with the larger cylinder diameter can apply larger force value. Most piston rods of air cylinders in the market can rotate randomly, so that great troubles are caused for static load tests of the air cylinders, and the test difficulty is increased.

The anti-rotation of the cylinder can be realized by changing the shape of the piston rod into the long round rod in the current market, the cylinder is mature, but the service life of the cylinder is shorter than that of a conventional cylinder, and the purchasing cost is relatively high.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-rotation device for a single-rod cylinder, which solves the problems.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model discloses an anti-rotation device for a single-rod cylinder, which comprises a cylinder body and a piston rod;

a positioning block with a limiting hole is fixedly arranged at the end cover part of the cylinder body of the air cylinder through an L-shaped clamp, a loading plate is arranged at the end part of the piston rod, and a polished rod is in sliding limiting fit between the loading plate and the limiting hole of the positioning block; the end of the polished rod is provided with a bearing seat support, and the bottom of the bearing seat support is fixedly connected with a joint clamp.

Furthermore, the top of the joint clamp is provided with a connecting seat connected with the bottom of the bearing seat support through a bolt, and the bottom of the connecting seat is provided with a connecting ring connected with the piston rod in a sleeved mode.

Furthermore, a first thread connected with the screw rod at the end part of the piston rod is arranged on one half of the connecting ring, and a second thread connected with the screw rod at the side part of the loading plate is arranged on the other half of the connecting ring.

Further, a pressure sensor is mounted on the loading plate, and the head of the pressure sensor is arranged on the end face of the loading plate.

Furthermore, a ball matched with the polish rod is arranged in the positioning block.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides an anti-rotation device suitable for a cylinder, which has the characteristics of simple clamp design, convenient installation, strong practicability and low cost, most of components of the device are components which are already available on the market and can be directly purchased, and a design and processing link is omitted, so that the anti-rotation device can be customized according to cylinders of different models and specifications; the anti-rotation device of the technical scheme can effectively prevent the cylinder from rotating, and the universality of the cylinder in the experimental field is greatly enhanced.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a cylinder loading mechanism of a static load test, in which the single-rod cylinder anti-rotation device is applied;

FIG. 2 is a right side view of the structure of FIG. 1;

FIG. 3 is a schematic view of the bearing support of FIG. 1;

FIG. 4 is a schematic view of a joint clamp;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

in the drawings, the components represented by the respective reference numerals are listed below:

1-cylinder body, 2-positioning block, 3-L-shaped clamp, 4-polished rod, 5-bearing seat support, 6-joint clamp, 601-connecting seat, 602-connecting ring, 6021-second thread, 6022-first thread, 7-loading plate and 8-piston rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "bottom", "end", "inner", "head", "end" and the like refer to an orientation or positional relationship merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-5, an anti-rotation device for a single-rod cylinder according to the present invention includes a cylinder body 1 and a piston rod 8;

a positioning block 2 with a limiting hole is fixedly arranged at the end cover part of the cylinder body 1 through an L-shaped clamp 3, the specific fixed installation mode adopts bolt fixing or welding fixing, a loading plate 7 is arranged at the end part of a piston rod 8, and a polished rod 4 is in sliding limiting fit between the loading plate 7 and the limiting hole of the positioning block 2; obviously, the polish rod 4 needs to have sufficient strength to limit the rotation of the piston rod 8; a bearing seat support 5 is arranged at the end part of the polished rod 4, and a joint clamp 6 is fixedly connected to the bottom of the bearing seat support 5; the positioning block 2 is used as a restraint device, so that the polished rod 4 is restrained and cannot deflect; the polish rod 4 is used as a guide device, so that the cylinder piston rod 8 moves together with the polish rod 4; the bearing seat bracket 5 enables the joint clamp 6 to be fixed with one end of the polished rod 4; .

The top of the joint clamp 6 is provided with a connecting seat 601 connected with the bottom of the bearing seat support 5 through a bolt, and the bottom of the connecting seat 601 is provided with a connecting ring 602 connected with the piston rod 8 in a sleeved mode; the loading plate 7 and the piston rod 8 of the air cylinder 1 can be connected together by the joint clamp 6, and the force applied by the air cylinder is applied to the test piece through the loading plate 7.

Wherein one half of the coupling ring 602 is provided with a first thread 6022 coupled to the screw rod at the end of the piston rod 8, and the other half of the coupling ring 602 is provided with a second thread 6021 coupled to the screw rod at the side of the loading plate 7.

Wherein, a pressure sensor is installed on the loading plate 7, and the head of the pressure sensor is arranged on the end surface of the loading plate 7.

Wherein, locating piece 2 is the common slider in the market of purchase, is often used for frock clamp, and internally mounted has the ball, can reduce friction and wearing and tearing, installs in the locating piece 2 with polished rod 4 matched with ball.

The polished rod 4 is matched with the positioning block 2 in size, the polished rod is made of stainless steel, the strength and toughness are sufficient, and the polished rod 4 is made of stainless steel; the L-shaped clamp 3 is also an independently designed tool, can be matched with cylinders of different sizes by independently processing different sizes, and has the advantages of small occupied space, convenience in installation and moderate strength. The polish rod 4 is connected to the piston rod 8 of the cylinder 1 through the bearing seat bracket 5 and the joint clamp 6, and it can be seen that when the piston rod 8 of the cylinder 1 wants to rotate, the polish rod 4 cannot rotate around the axis 8 of the piston rod because the polish rod 4 passes through the positioning block 2; the piston rod 8 of the cylinder 1 cannot rotate.

Has the advantages that:

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a single pole cylinder rotational lock, includes cylinder body (1) and piston rod (8), its characterized in that:

a positioning block (2) with a limiting hole is fixedly arranged at the end cover part of the cylinder body (1) through an L-shaped clamp (3), a loading plate (7) is arranged at the end part of the piston rod (8), and a polished rod (4) is in sliding limiting fit between the loading plate (7) and the limiting hole of the positioning block (2); the polished rod (4) is characterized in that a bearing seat support (5) is installed at the end part of the polished rod, and a joint clamp (6) is fixedly connected to the bottom of the bearing seat support (5).

2. The single-rod cylinder anti-rotation device is characterized in that a connecting seat (601) connected with the bottom of a bearing seat support (5) through a bolt is arranged at the top of the joint clamp (6), and a connecting ring (602) connected with a piston rod (8) in a sleeved mode is arranged at the bottom of the connecting seat (601).

3. An anti-rotation device for a single-rod cylinder according to claim 2, characterized in that the inner half of the connecting ring (602) is provided with a first thread (6022) connected to the screw rod at the end of the piston rod (8), and the inner half of the connecting ring (602) is provided with a second thread (6021) connected to the screw rod at the side of the loading plate (7).

4. The single-rod cylinder rotation-prevention device according to claim 1, characterized in that a pressure sensor is mounted on the load plate (7), and the head of the pressure sensor is arranged on the end surface of the load plate (7).

5. The single-rod cylinder rotation-preventing device according to claim 1, characterized in that balls matched with the polish rod (4) are installed in the positioning block (2).