CN213541143U

CN213541143U - Nitrogen tension spring

Info

Publication number: CN213541143U
Application number: CN202022614327.1U
Authority: CN
Inventors: 张栋; 杜祥森; 吕立福
Original assignee: Jiangsu Jigu Precision Machinery Technology Co ltd
Current assignee: Jiangsu Jigu Precision Machinery Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-06-25
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a nitrogen gas extension spring, comprising a cylinder body, the inside swing joint of cylinder body has the piston, the top fixed connection piston rod of piston, the air inlet has been seted up at the middle part of piston rod, the internally mounted of air inlet has the check valve, the bottom of air inlet is connected with the inlet port, the inner wall fixed connection holder of cylinder body, the top symmetric connection of piston rod has the fixed plate, the inside swing joint of fixed plate has the movable rod, the one end fixed connection of movable rod draws the piece, the other end fixedly connected with splint of movable rod, splint with be connected with the spring between the fixed plate, the top fixedly connected with protection machanism of piston rod, the exhaust hole has been seted up at the bottom middle part of cylinder body, beneficial effect: can make splint will inflate the part and press from both sides tightly for it is more stable when aerifing the cylinder body inside to inflate the part, avoids gaseous impulsive force to lead to inflating the part and takes place to rock.

Description

Nitrogen tension spring

Technical Field

The utility model relates to a nitrogen gas extension spring field particularly, relates to a nitrogen gas extension spring.

Background

Nitrogen gas extension spring is as among the pressure source has extensively applied to the mould, compare metal spring or rubber, nitrogen gas extension spring has stability good, elasticity advantage such as big, dust and dust of various can appear in the corresponding operational environment of nitrogen gas extension spring mostly, these dust and dust get into the inside jam that causes pneumatic valve or gas pocket easily of nitrogen gas extension spring, thereby influence the work of nitrogen gas extension spring, and current nitrogen gas extension spring adopts the dust screen mostly, dustproof effect is relatively poor, and current nitrogen gas extension spring can not be fine fix gas charging component when aerifing, lead to gas charging component to take place to drop easily, lead to aerifing unstably.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is to above not enough, provide a nitrogen gas extension spring, solve the problem that the background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: the nitrogen tension spring is characterized by comprising a cylinder body, wherein a piston is movably connected inside the cylinder body, the top end of the piston is fixedly connected with a piston rod, the middle part of the piston rod is provided with an air inlet, a one-way valve is arranged in the air inlet, the bottom end of the air inlet is connected with an air inlet, the inner wall of the cylinder body is fixedly connected with a retainer, the top end of the piston rod is symmetrically connected with a fixed plate, the inner part of the fixed plate is movably connected with a movable rod, one end of the movable rod is fixedly connected with a pulling block, the other end of the movable rod is fixedly connected with a clamping plate, a spring is connected between the clamping plate and the fixed plate and is wound on the surface of the movable rod, the top fixedly connected with protection mechanism of piston rod, protection mechanism with be equipped with slide mechanism between the cylinder body, the exhaust hole has been seted up at the bottom middle part of cylinder body.

Further, protection mechanism includes the protective sheath, the top fixedly connected with protective sheath of piston rod, the protective sheath with be equipped with slide mechanism between the cylinder body.

Further, slide mechanism includes slide rail and spout, the bilateral symmetry of cylinder body is connected with the slide rail, the spout has been seted up to the bottom symmetry of protective sheath, spout and slide rail sliding connection.

Furthermore, a first dust screen is connected between the retainer and the cylinder body.

Furthermore, a second dustproof net is connected between the retainer and the piston rod.

Furthermore, one side of the clamping plate is fixedly connected with a rubber pad.

Furthermore, the outer wall of the piston is sleeved with a sealing ring.

The utility model has the advantages that:

1. this nitrogen gas extension spring through setting up piston, piston rod, air inlet, check valve, inlet port, holder, mount, movable rod, draw piece, splint and spring, can make splint press from both sides tight inflatable unit under the elastic force effect of spring for inflatable unit is more stable when aerifing cylinder body inside, avoids gaseous impulsive force to lead to inflatable unit to take place to rock.

2. Through setting up protective sheath, dust screen one and dust screen two, not only can protect the outside of cylinder body, prevent the entering of dust and dust, also can prevent dust treatment to the inside of cylinder body, inside further avoiding the dust to enter into the cylinder body.

3. Through setting up the rubber pad, can enough increase the frictional force between splint and the inflatable unit, also can prevent splint and inflatable unit direct contact simultaneously and cause inflatable unit wearing and tearing.

Drawings

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

Fig. 1 is a schematic structural view of a nitrogen tension spring according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sliding mechanism in a nitrogen tension spring according to an embodiment of the present invention.

Reference numerals:

1. a cylinder body; 2. a piston; 3. a piston rod; 4. an air inlet; 5. a one-way valve; 6. an air inlet; 7. a holder; 8. a fixing plate; 9. a movable rod; 10. pulling the block; 11. a splint; 12. a spring; 13. an exhaust hole; 14. a protective sleeve; 15. a slide rail; 16. a chute; 17. a first dust screen; 18. a second dust screen; 19. a rubber pad; 20. and (5) sealing rings.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

The first embodiment is as follows:

referring to fig. 1-2, a nitrogen tension spring according to an embodiment of the present invention includes a cylinder body 1, a piston 2 is movably connected inside the cylinder body 1, a piston rod 3 is fixedly connected to a top end of the piston 2, an air inlet 4 is formed in a middle portion of the piston rod 3, a check valve 5 is installed inside the air inlet 4, an air inlet 6 is connected to a bottom end of the air inlet 4, a retainer 7 is fixedly connected to an inner wall of the cylinder body 1, a fixed plate 8 is symmetrically connected to a top end of the piston rod 3, a movable rod 9 is movably connected inside the fixed plate 8, a pull block 10 is fixedly connected to one end of the movable rod 9, a clamp plate 11 is fixedly connected to the other end of the movable rod 9, a spring 12 is connected between the clamp plate 11 and the fixed plate 8, the spring 12 is wound on a surface of the movable rod 9, and a, the protection mechanism with be equipped with slide mechanism between the cylinder body 1, exhaust hole 13 has been seted up in the bottom middle part of cylinder body 1.

Through the above technical scheme of the utility model, can make splint 11 press from both sides the tight part of aerifing under spring 12's elastic force for it is more stable when aerifing 1 inside of cylinder body to aerify the part, avoids gaseous impulsive force to lead to aerifing the part and takes place to rock.

Example two:

referring to fig. 1-2, for the protection mechanism, the protection mechanism includes a protective sheath 14, the top of the piston rod 3 is fixedly connected with a protective sleeve 14, a sliding mechanism is arranged between the protective sleeve 14 and the cylinder body 1, for the sliding mechanism, the sliding mechanism comprises a sliding rail 15 and a sliding chute 16, the sliding rail 15 is symmetrically connected to both sides of the cylinder body 1, the bottom end of the protective sleeve 14 is symmetrically provided with sliding chutes 16, the sliding chutes 16 are connected with the sliding rails 15 in a sliding manner, for the retainer 7, a first dust screen 17 is connected between the retainer 7 and the cylinder body 1, for the retainer 7, a second dustproof net 18 is connected between the retainer 7 and the piston rod 3, for the clamping plate 11, a rubber pad 19 is fixedly connected to one side of the clamping plate 11, and for the piston 2, a sealing ring 20 is sleeved on the outer wall of the piston 2.

Through the above technical scheme of the utility model, not only can protect the outside of cylinder body 1, prevent the entering of dust and dust, also can prevent dust to the inside of cylinder body 1 and handle, further avoid the dust to enter into inside of cylinder body 1.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the pulling block 10 is pulled outwards, the pulling block 10 drives the movable rod 9 to move outwards, so as to drive the clamping plate 11 to move outwards, the inflation component is inserted into the air inlet 4, the pulling block 10 is loosened, the clamping plate 11 moves inwards under the action of the elastic force of the spring 12, so as to clamp the inflation component, so that the inflation component is more stable when being inflated inside the cylinder body, the inflation component is prevented from shaking due to the impulsive force of gas, nitrogen enters the air inlet 6 through the check valve 5 and enters the cylinder body 1 through the air inlet 6, the piston 2 is pushed to move downwards along with the increase of air pressure, the piston 2 is enabled to discharge the gas at the bottom of the cylinder body 1 through the air outlet, the protective sleeve 14 can protect the outer side of the cylinder body 1, dust and dust are prevented from entering, the first dust screen 17 and the second dust screen 18 can perform dust prevention treatment on the inside of the cylinder body 1, further avoiding the entry of dust inside the cylinder 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The nitrogen tension spring is characterized by comprising a cylinder body (1), wherein a piston (2) is movably connected inside the cylinder body (1), a piston rod (3) is fixedly connected to the top end of the piston (2), an air inlet (4) is formed in the middle of the piston rod (3), a one-way valve (5) is installed inside the air inlet (4), an air inlet hole (6) is connected to the bottom end of the air inlet (4), a retainer (7) is fixedly connected to the inner wall of the cylinder body (1), a fixing plate (8) is symmetrically connected to the top end of the piston rod (3), a movable rod (9) is movably connected inside the fixing plate (8), a pull block (10) is fixedly connected to one end of the movable rod (9), a clamping plate (11) is fixedly connected to the other end of the movable rod (9), and a spring (12) is connected between the clamping plate (11) and, spring (12) twine and establish movable rod (9) surface, the top fixedly connected with protection mechanism of piston rod (3), protection mechanism with be equipped with slide mechanism between cylinder body (1), exhaust hole (13) have been seted up in the bottom middle part of cylinder body (1).

2. The nitrogen tension spring as recited in claim 1, wherein the protection mechanism comprises a protection sleeve (14), the top of the piston rod (3) is fixedly connected with the protection sleeve (14), and a sliding mechanism is arranged between the protection sleeve (14) and the cylinder body (1).

3. The nitrogen tension spring as recited in claim 2, wherein the sliding mechanism comprises sliding rails (15) and sliding grooves (16), the sliding rails (15) are symmetrically connected to two sides of the cylinder body (1), the sliding grooves (16) are symmetrically formed in the bottom end of the protective sleeve (14), and the sliding grooves (16) are slidably connected with the sliding rails (15).

4. The nitrogen tension spring as recited in claim 1, wherein a first dust screen (17) is connected between the retainer (7) and the cylinder body (1).

5. The nitrogen tension spring as recited in claim 4, wherein a second dust screen (18) is connected between the retainer (7) and the piston rod (3).

6. The nitrogen tension spring as recited in claim 1, wherein a rubber pad (19) is fixedly attached to one side of the clamping plate (11).

7. The nitrogen tension spring as recited in claim 1, wherein the outer wall of the piston (2) is sleeved with a sealing ring (20).