Nitrogen spring

Abstract

The utility model discloses a nitrogen spring, and relates to the technical field of nitrogen springs. The nitrogen spring comprises a cylinder body, an end cover is fixedly connected in the cylinder body, a piston rod is connected in the end cover in a sliding mode, a piston body is fixedly connected to the bottom of the piston rod, a sealing assembly is arranged on the end cover, and a clamping spring is arranged on the end cover. According to the nitrogen spring, a mechanism that the protective cylinder is slidably connected into the end cover is adopted, the track rod is fixedly connected to the protective cylinder, the first threaded hole and the second threaded hole are formed in the track rod, and the lock bolt fixedly connected to the end cover can be conveniently fixed to the track rod through a bolt; and when the bolt is fixed in the second threaded hole, the protection cylinder is in an unfolded state, so that the piston rod is conveniently protected and prevented from free return stroke, and when the bolt is fixed in the second threaded hole, the protection cylinder is in a contracted state, so that the nitrogen spring can be normally used.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen spring technical field, concretely is a nitrogen spring. BACKGROUND

[0002] In the modern industrial manufacturing field, nitrogen spring is indispensable key component, it is with nitrogen as elastic medium, utilize the compressibility of gas to realize elastic function, compared with traditional mechanical spring, nitrogen spring has more stable elastic force output, can keep performance consistent under different working conditions.

[0003] Nitrogen spring is a new type of elastic component with high pressure nitrogen as working medium, it utilizes compressed nitrogen as energy storage medium, provides force output through gas pressure change.Nitrogen spring has small volume, big elastic force, long stroke, stable work, precision manufacture, long service life, gentle elastic force curve and does not need pre-tightening etc. Utility model content

[0004] In view of the deficiency of prior art, the utility model provides a nitrogen spring to solve the problem that nitrogen spring is prone to cause piston rod free empty return and nitrogen spring internal damage.

[0005] To achieve the above object, the utility model is realized through the following technical scheme: a nitrogen spring, including cylinder, the cylinder is fixedly connected with end cover in, the end cover is slidably connected with piston rod in, the piston rod bottom is fixedly connected with piston main body, the end cover is provided with sealing assembly, the end cover is provided with snap spring, the cylinder bottom is screwedly connected with internal hexagonal bolt, one end of internal hexagonal bolt is provided with high pressure gas valve, the end cover is provided with protection cylinder.

[0006] Preferably, the end cover is provided with a track body, and the end cover top is fixedly connected with a lock bolt.

[0007] Preferably, the protection cylinder is fixedly connected with a track rod, and the protection cylinder is slidably connected in the end cover, and the track rod is slidably connected in the track body.

[0008] Preferably, the track rod is provided with a first threaded hole and a second threaded hole.

[0009] Preferably, the end cover is fixedly connected with an outer dustproof ring, and an inner dustproof ring is fixedly connected to the inner wall of the end cover.

[0010] Preferably, the inner hexagonal bolt is fixedly connected with a sealing gasket.

[0011] The nitrogen gas spring has the following beneficial effects: the nitrogen gas spring adopts a mechanism of slidingly connecting a protection cylinder in an end cover, the protection cylinder is fixedly connected with a track rod, the track rod is provided with a first threaded hole and a second threaded hole, and a lock bolt fixedly connected to the end cover is fixed between the bolt and the track rod, when the bolt is fixed in the first threaded hole, the protection cylinder is in an unfolded state, the piston rod is protected, the piston rod is prevented from freely returning, the internal structure of the nitrogen gas spring is effectively protected, and the service life of the nitrogen gas spring is prolonged, and when the bolt is fixed in the second threaded hole, the protection cylinder is in a contracted state, and the nitrogen gas spring is used normally. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0014] Figure 2 It is a schematic diagram of the internal hexagonal bolt structure of the present application;

[0015] Figure 3 It is a schematic diagram of the end cover structure of the present application;

[0016] Figure 4 It is a schematic diagram of the protection cylinder structure of the present application.

[0017] In the drawings: 1, cylinder body; 2, internal hexagonal bolt; 21, sealing gasket; 22, high-pressure gas valve; 3, piston rod; 31, piston main body; 4, end cover; 41, snap spring; 42, outer dustproof ring; 43, inner dustproof ring; 44, track main body; 45, lock bolt; 5, sealing assembly; 6, protection cylinder; 61, track rod; 611, first threaded hole; 612, second threaded hole. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] The nitrogen spring provided by the embodiment of the application solves the problem that the nitrogen spring is prone to side turning, which causes the free empty return of the piston rod 3 and causes the internal damage of the nitrogen spring, and the mechanism of slidingly connecting the protection cylinder 6 in the end cover 4 is adopted, the protection cylinder 6 is fixedly connected with the track rod 61, the first threaded hole 611 and the second threaded hole 612 are arranged on the track rod 61, the lock bolt 45 fixedly connected on the end cover 4 is fixed between the bolt and the track rod 61, when the bolt is fixed in the first threaded hole 611, the protection cylinder 6 is in the unfolded state, the piston rod 3 is protected, the free empty return of the piston rod 3 is prevented, the internal structure of the nitrogen spring is effectively protected, and the service life is prolonged, when the bolt is fixed in the second threaded hole 612, the protection cylinder 6 is in the contracted state, and the nitrogen spring is used normally.

[0020] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments. Embodiment

[0021] The utility model discloses a nitrogen spring, according to the attached Figures 1-4 As shown in the figure, including cylinder 1, cylinder 1 nitrogen spring's container, inside fills with high pressure gas, cylinder 1 is fixedly connected with end cover 4 in, end cover 4 is slidingly connected with piston rod 3 in, piston rod 3 is nitrogen spring's moving part, is connected to external mechanical parts, is responsible for transmitting force, piston rod 3 bottom fixedly connected with piston main body 31, piston main body 31 is connected with piston rod 3, is located in cylinder 1, plays the role of separating gas and transmitting pressure, end cover 4 is provided with sealing assembly 5, sealing assembly 5 ensures the sealing of nitrogen spring inside, prevents gas leakage, end cover 4 is provided with snap spring 41, cylinder 1 bottom is screwd with internal hexagonal bolt 2, one end of internal hexagonal bolt 2 is provided with high pressure gas valve 22, high pressure gas valve 22 fills high pressure nitrogen into nitrogen spring inside, end cover 4 is provided with protection cylinder 6 in.

[0022] End cover 4 is provided with track main body 44, and end cover 4 is provided with lock bolt 45 on the top.

[0023] Protection cylinder 6 is fixedly connected with track rod 61, and protection cylinder 6 is slidingly connected in end cover 4, and track rod 61 is slidingly connected in track main body 44.

[0024] The track rod 61 is provided with a first threaded hole 611 and a second threaded hole 612.

[0025] The end cover 4 is fixedly connected with an outer dustproof ring 42, and the inner wall of the end cover 4 is fixedly connected with an inner dustproof ring 43.

[0026] The hexagonal socket head cap screw 2 is fixedly connected with a sealing gasket 21, and the sealing gasket 21 ensures the sealing property of the nitrogen spring.

[0027] When the nitrogen spring needs to be transported, the protection cylinder 6 needs to be lifted, and the piston rod 3 needs to be protected, so as to prevent the piston rod 3 from being freely returned and causing the internal structure of the nitrogen spring to be damaged. Embodiment

[0028] The utility model discloses a nitrogen spring, according to the accompanying Figures 1-4 As shown, including cylinder 1, cylinder 1 nitrogen spring's container, inside fills with high pressure gas, cylinder 1 is fixedly connected with end cover 4 in, end cover 4 is slidably connected with piston rod 3 in, and piston rod 3 is the moving part of nitrogen spring, is connected to external mechanical parts, is responsible for transmission force, and the bottom of piston rod 3 is fixedly connected with piston main part 31, and piston main part 31 is connected with piston rod 3, is located in cylinder 1, plays the role of separating gas and transmission pressure, and end cover 4 is provided with sealing assembly 5, and sealing assembly 5 ensures the sealing property of the nitrogen spring, prevents gas leakage, and end cover 4 is provided with snap spring 41, and cylinder 1 bottom is threadedly connected with hexagonal socket head cap screw 2, and one end of hexagonal socket head cap screw 2 is provided with high pressure gas valve 22, and high pressure gas valve 22 fills high pressure nitrogen into the nitrogen spring, and end cover 4 is provided with protection cylinder 6.

[0029] The end cover 4 is fixedly connected with an outer dustproof ring 42, and the inner wall of the end cover 4 is fixedly connected with an inner dustproof ring 43.

[0030] The hexagonal socket head cap screw 2 is fixedly connected with a sealing gasket 21, and the sealing gasket 21 ensures the sealing property of the nitrogen spring.

[0031] When the nitrogen spring is used, the protection cylinder 6 is first contracted and fixed, then high-pressure nitrogen is filled into the cylinder body 1 through the high-pressure gas valve 22, the nitrogen is an elastic gas and can be compressed and expanded, when external force is applied to the nitrogen spring, the piston rod 3 compresses the internal piston body 31 to move inward, and the nitrogen sealed in the cylinder body 1 is compressed. As the volume of nitrogen decreases, its pressure increases, thereby storing the external energy in the form of gas compression, after the external force disappears, the nitrogen in the high-pressure state pushes the piston body 31 to drive the piston rod 3 to move outward, releases the stored energy, and realizes the rebound or reset function.

[0032] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A nitrogen gas spring comprising a cylinder (1), characterized in that, The cylinder (1) is fixedly connected with an end cover (4), the end cover (4) is slidably connected with a piston rod (3), the bottom of the piston rod (3) is fixedly connected with a piston body (31), the end cover (4) is provided with a sealing assembly (5), the end cover (4) is provided with a circlip (41), the bottom of the cylinder (1) is threadedly connected with an internal hexagonal bolt (2), one end of the internal hexagonal bolt (2) is provided with a high-pressure gas valve (22), and the end cover (4) is provided with a protection cylinder (6).

2. A nitrogen gas spring as claimed in claim 1, wherein The end cover (4) is provided with a track body (44), and the top of the end cover (4) is fixedly connected with a lock bolt (45).

3. A nitrogen gas spring as defined in claim 2, wherein The protection cylinder (6) is fixedly connected with a track rod (61), the protection cylinder (6) is slidably connected in the end cover (4), and the track rod (61) is slidably connected in the track body (44).

4. A nitrogen gas spring as defined in claim 3, wherein The track rod (61) is provided with a first threaded hole (611) and a second threaded hole (612).

5. The nitrogen gas spring of claim 1, wherein The end cover (4) is fixedly connected with an outer dustproof ring (42), and the inner wall of the end cover (4) is fixedly connected with an inner dustproof ring (43).

6. The nitrogen gas spring of claim 1, wherein The internal hexagonal bolt (2) is fixedly connected with a sealing gasket (21).

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