CN211820178U

CN211820178U - Novel air cylinder

Info

Publication number: CN211820178U
Application number: CN202020414252.XU
Authority: CN
Inventors: 赵万祥; 金华强
Original assignee: Hangzhou Xiangsheng Machinery Casting Co ltd
Current assignee: Hangzhou Xiangsheng Machinery Casting Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-10-30
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a novel cylinder, including the cylinder body, piston in the cylinder body and with piston fixed connection's piston rod, cylinder cavity both ends are provided with first gas pocket and second gas pocket respectively in the cylinder body, and the piston is in activity between first gas pocket and second gas pocket, and the cylinder body center is provided with the through-hole, and cylinder cavity is cylindric in the cylinder body, and the piston rod is the pipe form, and the piston includes inner piston and outer piston, is fixed in cylinder cavity inner piston rod inside and outside respectively. This novel cylinder central point puts and is equipped with the through-hole, conveniently is applied to the field that the cylinder needs the center to wear the pole, satisfies the center and need pass special occasions such as well core rod or pivot and use.

Description

Novel air cylinder

Technical Field

The utility model relates to the field of machine-building, especially, relate to a novel cylinder.

Background

The existing cylinder is shown in fig. 1 and fig. 2, and comprises a cylinder body 1, a piston 2 in the cylinder body and a piston rod 3 fixedly connected with the piston. The two ends of the cylinder cavity in the cylinder body are respectively provided with a first air hole 4 and a second air hole 5. The piston is pressed to realize the expansion of the cylinder shaft through the ventilation in and out.

However, the existing air cylinder is single in form, the air cylinder shaft is arranged in a solid column shape, and some mechanisms which need to penetrate through a rotating shaft or a connecting rod in the center of the air cylinder cannot use the air cylinder.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model relates to a novel cylinder.

The utility model adopts the following technical scheme:

the utility model provides a novel cylinder, includes the cylinder body, piston in the cylinder body and with piston fixed connection's piston rod, cylinder chamber both ends are provided with first gas pocket and second gas pocket respectively in the cylinder body, the piston is in activity between first gas pocket and second gas pocket, the cylinder body center is provided with the through-hole, the cylinder chamber is cylindric in the cylinder body, the piston rod is the pipe form, the piston includes inner piston and outer piston, is fixed in cylinder intracavity piston rod inside and outside respectively.

Preferably, the upper position and the lower position of the inner piston are respectively and fixedly connected with a buffer spring. The structure is convenient for the expansion buffering and noise reduction in the cylinder.

Preferably, the upper end and the lower end in the cylinder cavity are respectively provided with a limiting step in a protruding mode at the central position for limiting the position of the inner piston. The defined piston position is located between the first air port and the second air port.

Preferably, a sealing ring is arranged at a contact position of the cylinder body and the piston rod.

Preferably, a sealing ring is arranged at a contact position of the piston and the cylinder body.

The utility model has the advantages that: this novel cylinder central point puts and is equipped with the through-hole, conveniently is applied to the field that the cylinder needs the center to wear the pole, satisfies the center and need pass special occasions such as well core rod or pivot and use.

Drawings

FIG. 1 is a schematic view of an internal structure of a conventional cylinder;

FIG. 2 is a schematic view of an external structure of a conventional cylinder;

fig. 3 is a schematic view of an internal structure of the present invention;

fig. 4 is a schematic view of an external structure of the present invention;

in fig. 1 and 2: 1. the piston comprises a cylinder body, 2, a piston, 3, a piston rod, 4, a first air hole, 5 and a second air hole;

in fig. 3 and 4: 1. the piston rod, 3, outer piston, 4, interior piston, 5, first gas pocket, 6, second gas pocket, 7, spacing step, 8, buffer spring, 9, sealing washer.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example (b): as shown in attached figures 3 and 4, the novel air cylinder comprises a cylinder body 1, a piston in the cylinder body and a piston rod 2 fixedly connected with the piston are arranged at the two ends of a cylinder cavity in the cylinder body, a first air hole 5 and a second air hole 6 are respectively formed in the two ends of the cylinder cavity in the cylinder body, the piston moves between the first air hole and the second air hole, a through hole is formed in the center of the cylinder body, the cylinder cavity in the cylinder body is cylindrical, the piston rod is in a circular tube shape, the piston comprises an inner piston 4 and an outer piston 3 and is respectively fixed on the inner side and the outer side of a piston rod in the cylinder cavity, the upper end and the lower end of the inner piston are respectively and fixedly connected with a buffer spring 8, the upper end and the lower end of the cylinder cavity are respectively and.

When the novel air cylinder is used, air is introduced through the first air hole, air is discharged from the second air hole or air is introduced from the second air hole, the first air hole is discharged, the piston is driven by the piston to stretch, the buffer spring is convenient for stretching and buffering in the air cylinder to reduce noise, and the position of the piston is limited by the limiting step and is located between the first air hole and the second air hole.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims

1. The utility model provides a novel cylinder, includes the cylinder body, piston in the cylinder body and with piston fixed connection's piston rod, cylinder chamber both ends are provided with first gas pocket and second gas pocket in the cylinder body respectively, and the piston is movable between first gas pocket and second gas pocket, characterized by, the cylinder body center is provided with the through-hole, and cylinder chamber is cylindric in the cylinder body, and the piston rod is the pipe form, and the piston includes inner piston and outer piston, is fixed in cylinder intracavity piston rod inside and outside respectively.

2. The new cylinder as claimed in claim 1, wherein a buffer spring is fixedly connected to each of the upper and lower positions of the inner piston.

3. The novel cylinder as claimed in claim 1, wherein the upper and lower ends of the cylinder chamber are centrally provided with a limiting step for limiting the position of the inner piston.

4. The new cylinder as claimed in claim 1, wherein a sealing ring is provided on the cylinder body at a contact position with the piston rod.

5. The new cylinder as claimed in claim 1, wherein the piston is provided with a sealing ring at the contact part with the cylinder body.