Compact nitrogen spring

Abstract

The utility model discloses a compact nitrogen spring, and relates to the technical field of nitrogen springs. The compact nitrogen spring comprises a cylinder body, an end cover is fixedly connected in the cylinder body, a sealing device is arranged on the end cover, a clamping spring is arranged on the end cover, a cover plate is arranged on one side of the cylinder body, a piston device is arranged in the cylinder body, and the piston device is used for transmitting force. According to the compact nitrogen spring, the structure that the piston rod is sleeved with the protection barrel is adopted, when the nitrogen spring is maintained, the bolt body in threaded connection between the protection barrel and the piston rod can be screwed off, the surface of the protection barrel is thoroughly cleaned, and impurities on the surface of the protection barrel are effectively prevented from entering a sealing piece or a cylinder body; and meanwhile, the cover plate is arranged on the side face of the cylinder body, so that the upper surface of the cylinder body is conveniently protected, and the cylinder body is effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen spring technology, specifically a compact nitrogen spring. Background Technology

[0002] In modern industrial manufacturing, nitrogen springs are highly valuable key components. Using nitrogen as the elastic medium, they achieve their elastic function through the compressibility of high-pressure nitrogen, offering significant advantages over traditional springs. Their compact structure allows for efficient operation in limited spaces, saving considerable space for precision molds, greatly improving production efficiency and product quality, and propelling modern manufacturing to new heights.

[0003] Existing nitrogen springs all utilize compressed nitrogen as the energy storage medium, providing force output through changes in gas pressure. Nitrogen springs are characterized by small size, high elasticity, long stroke, stable operation, precision manufacturing, long service life, a gentle elasticity curve, and no need for preload. However, during use, the piston rod needs to be cleaned regularly to prevent impurities from entering the seals or cylinder, causing wear or damage. During the extension and retraction of the nitrogen spring, a portion of the piston rod remains inside the end cap, making thorough cleaning difficult. Furthermore, for long-term storage, the cylinder surface needs to be evenly coated with grease to protect it from corrosion; however, the upper surface of the cylinder is not easily protected with grease. To address the shortcomings of existing technology, this invention provides a compact nitrogen spring to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a compact nitrogen spring, which solves the problems of inconvenience in thoroughly cleaning the piston rod and inconvenience in spraying grease to protect the upper surface of the cylinder.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a compact nitrogen spring, including a cylinder body, an end cap fixedly connected to the cylinder body, a sealing device provided on the end cap, a snap ring provided on the end cap, a cover plate provided on one side of the cylinder body, and a piston device provided inside the cylinder body, the piston device being used to transmit force;

[0006] The piston device includes:

[0007] The protective sleeve is slidably connected inside the end cap;

[0008] The piston rod is slidably connected to the end cap, and the protective cylinder is threadedly connected to the piston rod.

[0009] The piston body is slidably connected to the cylinder body, and the piston rod is fixedly connected to the piston body.

[0010] Preferably, a hexagonal internal bolt is threaded into the cylinder body, a sealing gasket is fixedly connected to the hexagonal internal bolt, and a high-pressure air valve is fixedly connected to one end of the hexagonal internal bolt.

[0011] Preferably, a fixing block is fixedly connected to the cylinder body, and a track body is fixedly connected to the cylinder body.

[0012] Preferably, a first locking bolt is fixedly connected to the bottom of the cover plate, a connector is fixedly connected to the cover plate, and a track block is fixedly connected to the end of the connector away from the cover plate. The track block is slidably connected within the track body.

[0013] Preferably, an inner dustproof pad is fixedly connected to the inner wall of the end cap, and an outer dustproof pad is fixedly connected to the end cap.

[0014] Preferably, a second locking bolt is fixedly connected to the cylinder body.

[0015] Preferably, the protective cylinder and the piston rod are connected by a bolt body via a threaded connection.

[0016] This utility model discloses a compact nitrogen spring, which has the following beneficial effects: The compact nitrogen spring adopts a structure in which a protective cylinder is sleeved on the piston rod. When maintaining the nitrogen spring, the main body of the bolt connecting the threaded connection between the protective cylinder and the piston rod can be unscrewed to thoroughly clean the surface of the protective cylinder, effectively preventing impurities on the surface of the protective cylinder from entering the seal or cylinder body, which would cause wear or damage to the seal. At the same time, a cover plate is provided on the side of the cylinder body to facilitate the protection of the upper surface of the cylinder body and effectively prevent the cylinder body from corroding. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the end cap structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cover plate structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the piston device structure of this utility model.

[0022] In the diagram: 1. Cylinder body; 11. Second locking bolt; 12. Fixing block; 13. Rail body; 2. Hexagonal internal bolt; 21. Sealing gasket; 22. High-pressure air valve; 3. End cap; 31. Sealing device; 32. Snap ring; 4. Outer dustproof pad; 41. Inner dustproof pad; 5. Piston assembly; 51. Protective cylinder; 52. Piston rod; 521. Bolt body; 53. Piston body; 6. Cover plate; 61. Connecting piece; 62. Rail block; 63. First locking bolt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] This application provides a compact nitrogen spring that solves the problems of inconvenience in thoroughly cleaning the piston rod 52 and inconvenience in spraying grease to protect the upper surface of the cylinder 1. It achieves a structure in which a protective sleeve 51 is sleeved on the piston rod 52. When maintaining the nitrogen spring, the main bolt 521 connecting the threaded connection between the protective sleeve 51 and the piston rod 52 can be unscrewed to thoroughly clean the surface of the protective sleeve 51. This effectively prevents impurities on the surface of the protective sleeve 51 from entering the sealed cylinder 1 and causing wear or damage to the seal. At the same time, a cover plate 6 is provided on the side of the cylinder 1 to protect the upper surface of the cylinder 1 and effectively prevent the cylinder 1 from corroding.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example

[0026] This utility model discloses a compact nitrogen spring, according to the attached... Figure 1-4 As shown, it includes a cylinder body 1, an end cap 3 fixedly connected inside the cylinder body 1, a sealing device 31 provided on the end cap 3, a snap ring 32 provided on the end cap 3, a cover plate 6 provided on one side of the cylinder body 1, and a piston device 5 provided inside the cylinder body 1 for transmitting force.

[0027] Piston assembly 5 includes:

[0028] The protective sleeve 51 is slidably connected to the end cap 3;

[0029] Piston rod 52 is slidably connected inside end cap 3, and protective cylinder 51 is threadedly connected to piston rod 52;

[0030] The piston body 53 is slidably connected to the cylinder 1, and the piston rod 52 is fixedly connected to the piston body 53.

[0031] The cylinder body 1 is internally threaded with a hexagonal internal bolt 2, and a sealing gasket 21 is fixedly connected to the hexagonal internal bolt 2. A high-pressure air valve 22 is fixedly connected to one end of the hexagonal internal bolt 2.

[0032] A fixing block 12 is fixedly connected to the cylinder body 1, and a track body 13 is fixedly connected to the cylinder body 1.

[0033] An inner dustproof pad 41 is fixedly connected to the inner wall of the end cover 3, and an outer dustproof pad 4 is fixedly connected to the end cover 3. The dustproof pad 41 and the outer dustproof pad 4 effectively prevent external dust from entering the cylinder body 1.

[0034] A bolt body 521 is threadedly connected between the protective cylinder 51 and the piston rod 52, which facilitates the fixing of the protective cylinder 51 and the piston rod 52.

[0035] When maintaining the nitrogen spring, the protective cylinder 51 inside the piston device 5 can be removed for thorough cleaning, effectively preventing impurities on the surface of the protective cylinder 51 from entering the cylinder 1 and causing wear or damage to the seals. First, unscrew the bolt body 521 that connects the protective cylinder 51 and the piston rod 52, and then rotate the protective cylinder 51 to remove it from the piston rod 52, making it easy to thoroughly clean the protective cylinder 51. Example

[0036] This utility model discloses a compact nitrogen spring, according to the attached... Figure 1-4 As shown, it includes a cylinder body 1, an end cap 3 fixedly connected inside the cylinder body 1, a sealing device 31 provided on the end cap 3, a snap ring 32 provided on the end cap 3, a cover plate 6 provided on one side of the cylinder body 1, and a piston device 5 provided inside the cylinder body 1 for transmitting force.

[0037] Piston assembly 5 includes:

[0038] The protective sleeve 51 is slidably connected to the end cap 3;

[0039] Piston rod 52 is slidably connected inside end cap 3, and protective cylinder 51 is threadedly connected to piston rod 52;

[0040] The piston body 53 is slidably connected to the cylinder 1, and the piston rod 52 is fixedly connected to the piston body 53.

[0041] A first locking bolt 63 is fixedly connected to the bottom of the cover plate 6, and a connector 61 is fixedly connected to the cover plate 6. A track block 62 is fixedly connected to the end of the connector 61 away from the cover plate 6, and the track block 62 is slidably connected to the track body 13.

[0042] A second locking bolt 11 is fixedly connected to the cylinder body 1.

[0043] When nitrogen springs need to be stored for a long time, the nitrogen in cylinder 1 is first released by a professional. Then, piston device 5 is lowered into cylinder 1. Next, grease is evenly sprayed onto the surface of cylinder 1 to protect it and prevent corrosion. Then, the bolts between the first locking bolt 63 and the fixing block 12 are unscrewed. The first locking bolt 63 is fixedly connected to the cover plate 6, thereby releasing the limit of the cover plate 6. The cover plate 6 is then rotated to reach the upper surface of cylinder 1. During this process, the connecting piece 61 fixedly connected to the cover plate 6 rotates, which facilitates the protection of the upper surface of cylinder 1 and effectively prevents corrosion.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A compact nitrogen spring, comprising a cylinder (1), wherein an end cap (3) is fixedly connected inside the cylinder (1), characterized in that, A sealing device (31) is provided on the end cap (3), a snap ring (32) is provided on the end cap (3), a cover plate (6) is provided on one side of the cylinder (1), and a piston device (5) is provided inside the cylinder (1). The piston device (5) is used to transmit force. The piston device (5) includes: The protective sleeve (51) is slidably connected inside the end cap (3); The piston rod (52) is slidably connected inside the end cap (3), and the protective cylinder (51) is threadedly connected to the piston rod (52); The piston body (53) is slidably connected to the cylinder (1), and the piston rod (52) is fixedly connected to the piston body (53).

2. A compact nitrogen spring according to claim 1, characterized in that, The cylinder body (1) is internally threaded with a hexagonal internal bolt (2), a sealing gasket (21) is fixedly connected to the hexagonal internal bolt (2), and a high-pressure air valve (22) is fixedly connected to one end of the hexagonal internal bolt (2).

3. A compact nitrogen spring according to claim 2, characterized in that, A fixing block (12) is fixedly connected to the cylinder (1), and a track body (13) is fixedly connected to the cylinder (1).

4. A compact nitrogen spring according to claim 3, characterized in that, The bottom of the cover plate (6) is fixedly connected to a first locking bolt (63), and a connector (61) is fixedly connected to the cover plate (6). The end of the connector (61) away from the cover plate (6) is fixedly connected to a track block (62), and the track block (62) is slidably connected to the track body (13).

5. A compact nitrogen spring according to claim 1, characterized in that, An inner dustproof pad (41) is fixedly connected to the inner wall of the end cap (3), and an outer dustproof pad (4) is fixedly connected to the end cap (3).

6. A compact nitrogen spring according to claim 1, characterized in that, A second locking bolt (11) is fixedly connected to the cylinder body (1).

7. A compact nitrogen spring according to claim 1, characterized in that, The protective cylinder (51) and the piston rod (52) are threaded together by a bolt body (521).

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