CN220667992U - Piston connecting device for lightweight hydraulic cylinder - Google Patents

Abstract

The utility model provides a lightweight piston connecting device for pneumatic cylinder, includes the pole tip that sets up at the piston rod tip, and pole tip is connected with the piston, and the non-cooperation end of pole tip and piston all is equipped with subtracts heavy recess, and pole tip and piston pass through screw connection together, and the tank bottom of the heavy recess of piston is equipped with a plurality of screw through-holes, is equipped with the screw hole that uses with the screw cooperation on the pole tip. According to the piston connecting device for the lightweight hydraulic cylinder, the weight reducing grooves are formed in the small end faces of the piston and the rod, so that the lightweight requirement of the hydraulic cylinder can be met on the basis of meeting the requirements of use, matrix strength and rigidity, and meanwhile, the piston connecting device is simple in structure and easy to install and detach; compared with self-made threads, the uniformly distributed screw connection can ensure torque, and the reliability of the hydraulic cylinder is improved to a greater extent.

Description

Piston connecting device for lightweight hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a piston connecting device for a lightweight hydraulic cylinder.

Background

At present, along with the high-quality development of the engineering mechanical industry, the engineering mechanical industry has increasingly strict requirements on the weight reduction, and has higher requirements on the weight reduction of the hydraulic cylinder; the hydraulic cylinder is widely used in engineering machinery industry as an executive component, and at present, a piston and a piston rod for the hydraulic cylinder generally adopt an integral threaded or clamping key type structure; the integral thread type connecting mode is easy to loosen during use, has poor connecting effect and is not beneficial to providing the stability of the integral structure; the clamping key type connecting mode has the advantages of more structural parts and large overall weight, and is not beneficial to realizing the light weight requirement of the hydraulic cylinder.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the piston connecting device for the lightweight hydraulic cylinder, which has a simple structure and a good effect.

The utility model is realized by the following technical scheme: the utility model provides a lightweight is piston connecting device for pneumatic cylinder, includes the pole tip of setting at the piston rod tip, the pole tip is connected with the piston, the non-cooperation end of pole tip and piston all is equipped with the weight-reducing recess, pole tip and piston pass through screw connection together, the tank bottom of the weight-reducing recess of piston is equipped with a plurality of screw through-holes, be equipped with the screw hole that uses with the screw cooperation on the pole tip.

It is further: the small end of the rod is fixed on the piston rod in a threaded and welded mode.

The connecting end of the piston and the small rod head is provided with a step groove for placing the small rod head, a static sealing ring is arranged between the piston and the small rod head, and the step groove is provided with a static sealing groove for placing the static sealing ring.

A plurality of screws are uniformly distributed at the bottom of the weight-reducing groove of the piston.

A gasket is arranged between the screw and the piston, and a plurality of unthreaded holes for installing the screw are uniformly distributed on the gasket.

The utility model has the following advantages: according to the piston connecting device for the lightweight hydraulic cylinder, the weight reducing grooves are formed in the small end faces of the piston and the rod, so that the lightweight requirement of the hydraulic cylinder can be met on the basis of meeting the requirements of use, matrix strength and rigidity, and meanwhile, the piston connecting device is simple in structure and easy to install and detach; compared with self-made threads, the uniformly distributed screw connection can ensure torque, and the reliability of the hydraulic cylinder is improved to a greater extent.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the piston of the present utility model;

FIG. 3 is a schematic view of the structure of the gasket of the present utility model;

FIG. 4 is a schematic view of the structure of the small head of the inventive pole

In the figure: 1. screw, 2, packing ring, 3, piston, 4, pole tip, 5, cylinder, 6, uide bushing.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The piston connecting device for the lightweight hydraulic cylinder comprises a small rod head 4 arranged at the end part of a piston rod, wherein the small rod head 4 is connected with a piston 3, non-matching ends of the small rod head 4 and the piston 3 are respectively provided with a weight reduction groove, the small rod head 4 and the piston 3 are connected together through a screw 1, the bottom of the weight reduction groove of the piston 3 is provided with a plurality of screw through holes, and the small rod head 4 is provided with a threaded hole matched with the screw 1. According to the piston connecting device for the lightweight hydraulic cylinder, the piston is connected with the piston rod through the screw, the end part of the piston rod is provided with the small rod end for being connected with the piston, the non-matching surfaces of the piston and the small rod end are respectively provided with the weight-reducing groove, so that the lightweight structure is realized, the lightweight requirement of the hydraulic cylinder can be realized on the basis of meeting the use, the strength and the rigidity of a matrix, in addition, the screw mounting hole on the piston is arranged on the bottom surface of the weight-reducing groove, and the small rod end is provided with the threaded hole, so that the connection of the piston and the small rod end is realized, and the screw connecting mode is simple in structure, easy to install and detach and convenient to maintain; during installation, the guide sleeve 6, the piston rod, the piston and the screw are sequentially arranged in the cylinder 5, so that the screw moment is ensured, and an electric moment tool is needed to improve the use reliability of the hydraulic cylinder when the screw is screwed down.

A piston connecting device for a lightweight hydraulic cylinder as shown in fig. 1 to 4, the rod small head 4 is fixed to the piston rod by means of screw threads and welding. The small rod end is connected with the piston rod through threads and then fixed in a welding mode, so that the connection reliability is ensured.

The piston connecting device for the lightweight hydraulic cylinder is shown in fig. 1 to 4, a step groove for placing the small rod end 4 is formed in the connecting end of the piston 3 and the small rod end 4, a static sealing ring is arranged between the piston 3 and the small rod end 4, and a static sealing groove for placing the static sealing ring is formed in the step groove. The piston and the small rod head are matched with each other to form a step groove for installing the small rod head, the inner side surface of the step groove is provided with a static seal groove, and the piston and the small rod head are sealed through the static seal ring, so that the sealing reliability is ensured.

As shown in fig. 1 to 4, in a piston connecting device for a lightweight hydraulic cylinder, a plurality of screws 1 are uniformly distributed at the bottom of a weight-reducing groove of a piston 3. A gasket 2 is arranged between the screw 1 and the piston 3, and a plurality of unthreaded holes for installing the screw 1 are uniformly distributed on the gasket 2. The bottom surface of the piston weight-reducing groove is uniformly provided with the drilling holes, the drilling holes are used for connecting an assembly screw with a piston rod, a gasket is arranged between the screw and the piston, and holes with the same number as that of the piston drilling holes are uniformly distributed on the gasket and used for preventing the screw from loosening.

The piston connecting device for the lightweight hydraulic cylinder has a simple structure and is easy to install and disassemble; the weight reduction groove is formed in the small end faces of the piston and the rod, and the light weight requirement of the hydraulic cylinder can be met on the basis of meeting the requirements of use, matrix strength and rigidity.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.

Claims (5)

1. A lightweight piston connecting device for pneumatic cylinders, characterized in that: including setting up pole tip (4) at the piston rod tip, pole tip (4) are connected with piston (3), the non-cooperation end of pole tip (4) and piston (3) all is equipped with subtracts heavy recess, pole tip (4) are in the same place through screw (1) with piston (3), the tank bottom of the heavy recess of piston (3) is equipped with a plurality of screw through-holes, be equipped with the screw hole that uses with screw (1) cooperation on pole tip (4).

2. A piston connecting device for a lightweight hydraulic cylinder as claimed in claim 1, characterized in that: the small rod head (4) is fixed on the piston rod in a threaded and welded mode.

3. A piston connecting device for a lightweight hydraulic cylinder as claimed in claim 1, characterized in that: the connecting end of the piston (3) and the small rod head (4) is provided with a step groove for placing the small rod head (4), a static sealing ring is arranged between the piston (3) and the small rod head (4), and the step groove is provided with a static sealing groove for placing the static sealing ring.

4. A piston connecting device for a lightweight hydraulic cylinder as claimed in claim 1, characterized in that: the bolts (1) are uniformly distributed at the bottom of the weight-reducing groove of the piston (3).

5. A piston connecting device for a lightweight hydraulic cylinder as recited in claim 4, wherein: a gasket (2) is arranged between the screw (1) and the piston (3), and a plurality of unthreaded holes for installing the screw (1) are uniformly distributed on the gasket (2).