CN220600320U - Nitrogen spring cylinder body structure - Google Patents

Abstract

The application discloses nitrogen spring cylinder body structure belongs to nitrogen spring technical field. The cylinder body is of a hollow structure, an air inlet channel is formed in one side of the bottom of the cylinder body, an air charging valve is mounted on the air inlet channel, a sealing mechanism is mounted at the opening of the cylinder body, a piston rod is slidably mounted in the cylinder body, a positioning block is arranged on the piston rod, the outer walls of the two sides of the positioning block are obliquely arranged, a limiting mechanism is arranged on the inner wall of the cylinder body and comprises a limiting frame, the limiting frame is mounted on the inner wall of the cylinder body and provided with a sliding groove, the sliding groove is matched with the positioning block, and the positioning block is suitable for being clamped in the sliding groove and slides along the sliding groove to position the piston rod. The utility model provides a nitrogen spring cylinder body structure has solved nitrogen spring under the vibrations state, easily makes the piston rod appear the skew problem.

Description

Nitrogen spring cylinder body structure

Technical Field

The application relates to the technical field of nitrogen springs, in particular to a nitrogen spring cylinder body structure.

Background

The nitrogen spring is a spring system using nitrogen as a working medium, and consists of a sealed cylinder body, a piston rod and other parts which are slidably arranged in the cylinder body, when the piston rod moves by applying force externally, the nitrogen is compressed to generate a reaction force, so that the spring has the functions of supporting and damping;

the utility model patent with publication number CN219035415U specifically discloses a nitrogen spring, which comprises a cylinder body and a cylinder seat arranged at the bottom of the cylinder body, wherein a piston rod is slidably arranged in the cylinder body, a bushing and a check ring are arranged at the contact part of the cylinder body and the piston rod to seal the interior of the cylinder body, meanwhile, an air inlet is arranged at the side part of the cylinder body to input nitrogen into the cylinder body, and a safety valve is arranged at the bottom of the cylinder body to enable the nitrogen to be discharged outwards when the air pressure is too high;

however, in the practical use of the nitrogen spring, the piston rod is always kept at a stable position by the friction force between the retainer ring and the cylinder body, but when the nitrogen spring is in a vibration working state, the piston rod is easy to shake due to the influence of the vibration force, and in the shaking process, the piston rod can possibly deviate to a certain extent, so that poor sealing between the piston and the cylinder wall is caused, and the performance of the nitrogen spring is influenced, so that the nitrogen spring cylinder body structure is needed to solve the problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the present application concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the problems to be solved by the present application are: the nitrogen spring cylinder body structure solves the problem that a piston rod is easy to deviate when a nitrogen spring is in a vibration state.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a nitrogen spring cylinder body structure, includes the cylinder body, this cylinder body is hollow structure, the intake duct has been seted up to cylinder body bottom one side, install the inflation valve on the intake duct, sealing mechanism install in cylinder body opening part, piston rod, this piston rod slidable mounting in the cylinder body, be provided with the locating piece on the piston rod, the both sides outer wall of locating piece sets up for the slope, stop gear, this stop gear set up in on the cylinder body inner wall, stop gear includes the locating rack, and this locating rack is installed on the cylinder body inner wall, the locating rack has the spout, the spout with locating piece looks adaptation, the locating piece be suitable for the joint in the spout, and along the spout slides, in order to right the piston rod is fixed a position.

Further, the limiting mechanism further comprises a spring, and the spring is fixed in the chute and connected with the positioning block.

Further, an exhaust passage is formed in the bottom of the cylinder body and is communicated with the air inlet passage, and a pressure release valve is arranged on the exhaust passage.

Further, the limiting frame is made of aluminum alloy materials.

Further, sealing mechanism includes the bush, the bush is fixed in cylinder body upper end opening part, the piston rod run through in the bush, the bush with set up by the sealing washer between the piston rod, the bush with be provided with the dirt proof boot between the cylinder body, in order to prevent that the dust from getting into in the cylinder body.

The beneficial effects of this application are: the utility model provides a pair of nitrogen spring cylinder body structure is through being fixed in the locating rack on the cylinder body inner wall to under the cooperation between spout and locating piece, inject the piston rod position, in order to prevent the piston rod condition of easily appearing the position skew, and solved nitrogen spring under vibration state, easily make the piston rod appear the skew problem.

In addition to the objects, features, and advantages described above, there are other objects, features, and advantages of the present application. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.

In the drawings:

FIG. 1 is an overall schematic diagram of a nitrogen spring cylinder structure of the present application;

FIG. 2 is a schematic view of the internal structure of the cylinder of FIG. 1;

FIG. 3 is a schematic view of the cylinder of FIG. 1 in semi-section;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

wherein, each reference sign in the figure:

1. a cylinder; 11. an air inlet channel; 12. an exhaust passage; 2. a piston rod; 21. a positioning block; 3. a bushing; 4. a dust cover; 5. a limiting mechanism; 51. a limiting frame; 52. a spring; 53. a chute; 6. an inflation valve; 7. a pressure relief valve.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

As shown in fig. 1-2, the application provides a nitrogen spring cylinder body structure, which comprises a cylinder body 1, wherein the cylinder body 1 is hollow, a piston rod 2 is slidably installed in the cylinder body 1, a sealing mechanism is installed at an opening at the upper end of the cylinder body 1, the sealing mechanism comprises a bushing 3, the bushing 3 is arranged at the opening at the upper end of the cylinder body 1, and the bushing 3 is fixedly connected with the cylinder body 1;

the piston rod 2 penetrates through the bushing 3 and contacts with the bushing 3, and a sealing ring (not shown in the figure) is arranged between the piston rod 2 and the bushing 3 so as to seal the space between the piston rod 2 and the bushing 3 and indirectly seal the inner cavity of the cylinder body 1;

the sealing mechanism further comprises a dust cover 4, and the dust cover 4 is arranged between the piston rod 2 and the inner wall of the cylinder body 1 so as to prevent dust, dirt and other impurities from entering the cylinder body 1;

when the piston rod 2 is acted by external force, the piston rod 2 contracts towards the inside of the cylinder body 1 and extrudes nitrogen in the cylinder body 1 to form a contracted state, and after the piston rod 2 is lost by the external force, the nitrogen under high pressure ejects the piston rod 2 outwards to reset the piston rod 2;

an air inlet channel 11 is formed in one side of the bottom of the cylinder body 1, an air charging valve 6 is mounted on the air inlet channel 11, an exhaust channel 12 communicated with an air inlet channel is formed in the bottom of the cylinder body 1, and when the cylinder body 1 needs to be filled with nitrogen, the nitrogen is led into the air inlet channel 11 through the air charging valve 6 by connecting an air pump with the air charging valve 6 and is input into the cylinder body 1 through the exhaust channel 12;

meanwhile, the exhaust passage 12 is provided with a pressure release valve 7, when the pressure in the cylinder body 1 exceeds the limiting pressure, the pressure release valve 7 is opened and the nitrogen in the cylinder body 1 is discharged outwards through the cooperation of the exhaust passage 12;

the above are all working components of the nitrogen spring cylinder structure in the present application, and the cylinder structure is in the prior art, and refer to the nitrogen spring in the prior art specifically, and will not be described in detail herein;

as shown in fig. 3 to fig. 4, a limiting mechanism 5 is disposed in the cylinder 1, the limiting mechanism 5 is used for limiting the piston rod 2 and preventing the piston rod 2 from being deviated due to vibration, in this application, the limiting mechanism 5 may be disposed in two groups, and the specific number of the limiting mechanisms is appropriate to the actual situation, which is not limited herein;

the limiting mechanism 5 comprises a limiting frame 51, wherein the limiting frame 51 is fixedly arranged on the inner wall of the cylinder body 1, the limiting frame 51 is made of an aluminum alloy material, the limiting frame 51 consists of a group of bottom rods and two groups of vertical rods arranged at two ends of the bottom rods, the bottom rods and the vertical rods are of an integrated structure, a sliding groove 53 is formed between the two groups of vertical rods, meanwhile, the inner walls at two sides in the sliding groove 53 are inclined planes, and the inner walls at two sides in the sliding groove 53 incline towards the inner central section of the sliding groove 53, so that the opening of the sliding groove 53 is reduced;

meanwhile, a positioning block 21 is arranged at the bottom end of the piston rod 2, the positioning block 21 and the limiting mechanism 5 are correspondingly arranged, the outer walls of two sides of the positioning block 21 are obliquely arranged, and the positioning block 21 is matched with the sliding groove 53, so that the positioning block 21 is clamped in the sliding groove 53, the positioning block 21 is suitable for sliding up and down along the sliding groove 53, and the piston rod 2 is driven to reciprocate in the cylinder body 1;

in order to reduce the influence of the friction force between the positioning block 21 and the inner wall of the sliding groove 53 when the piston rod 2 is reset, the limiting mechanism 5 further comprises a spring 52, wherein the spring 52 is installed in the sliding groove 53 and connected with the positioning block 21, when the positioning block 21 moves towards the bottom in the cylinder body 1, the positioning block 21 extrudes the spring 52, so that the spring 52 applies elasticity to the positioning block 21, and the positioning block 21 is reset under the action of the elasticity;

in summary, the limit frame 51 is fixed on the inner wall of the cylinder 1, and the position of the piston rod 2 is limited under the cooperation between the chute 53 and the positioning block 21, so as to prevent the piston rod 2 from being easily deviated, and solve the problem that the piston rod 2 is easily deviated when the nitrogen spring is in a vibration state.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (5)

1. A nitrogen spring cylinder structure comprising:

the cylinder body (1), the cylinder body (1) is of a hollow structure, one side of the bottom of the cylinder body (1) is provided with an air inlet channel (11), and the air inlet channel (11) is provided with an inflation valve (6);

the sealing mechanism is arranged at the opening of the cylinder body (1);

the piston rod (2) is slidably arranged in the cylinder body (1), a positioning block (21) is arranged on the piston rod (2), and outer walls of two sides of the positioning block (21) are obliquely arranged;

the limiting mechanism (5), this limiting mechanism (5) set up in on cylinder body (1) inner wall, its characterized in that: the limit mechanism (5) comprises:

the limiting frame (51) is arranged on the inner wall of the cylinder body (1), the limiting frame (51) is provided with a sliding groove (53), and the sliding groove (53) is matched with the positioning block (21);

wherein: the positioning block (21) is suitable for being clamped in the sliding groove (53) and sliding along the sliding groove (53) so as to position the piston rod (2).

2. A nitrogen spring cylinder structure according to claim 1, wherein: the limiting mechanism (5) further comprises a spring (52), and the spring (52) is fixed in the sliding groove (53) and connected with the positioning block (21).

3. A nitrogen spring cylinder structure according to claim 2, wherein: an exhaust passage (12) is formed in the bottom of the cylinder body (1), the exhaust passage (12) is communicated with the air inlet passage (11), and a pressure release valve (7) is arranged on the exhaust passage (12).

4. A nitrogen spring cylinder structure according to claim 1, wherein: the limiting frame (51) is made of an aluminum alloy material.

5. A nitrogen spring cylinder structure according to claim 1, wherein: the sealing mechanism comprises a bushing (3), and the bushing (3) is fixed at the opening of the upper end of the cylinder body (1);

the piston rod (2) penetrates through the bushing (3), and a sealing ring is arranged between the bushing (3) and the piston rod (2);

a dust cover (4) is arranged between the lining (3) and the cylinder body (1) so as to prevent dust from entering the cylinder body (1).