High-load nitrogen spring

Abstract

The utility model discloses a high-load nitrogen spring, which belongs to the technical field of nitrogen springs and comprises a cylinder body, a sealing dustproof component is detachably connected in the cylinder body, a piston rod is slidably inserted at one end of the cylinder body and movably penetrates through the sealing dustproof component, a threaded pipe is rotatably connected in the piston rod, and a threaded rod is in threaded connection in the threaded pipe. One end of the threaded rod is fixedly connected with a piston barrel, and the piston barrel is slidably connected to the circumferential inner wall of the cylinder body; the threaded rod is controlled by rotating the threaded pipe to adjust the position of the piston barrel, so that the piston barrel compresses nitrogen in the cylinder body, the load of the nitrogen spring is improved, and the nitrogen spring can be applied to high-load equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen springs, and more specifically, to a high-load nitrogen spring. Background Art

[0002] A nitrogen spring is a new type of elastic component with high-pressure nitrogen as the working medium. It has the advantages of small volume, large elastic force, long stroke, stable operation, precise manufacturing, long service life (one million times), gentle elastic force curve, and no need for pre-tightening.

[0003] Currently, a nitrogen spring is composed of a cylinder body, a sealing and dust-proof component, a piston, and a piston rod. High-pressure nitrogen is sealed in the cylinder body. When an external force compresses the piston rod, the nitrogen is compressed at the same time. When the external force is released, the high-pressure nitrogen expands, thereby obtaining a certain elastic pressure. However, the internal space of the cylinder body of most existing nitrogen springs is usually fixed, resulting in a constant elastic pressure, unable to adjust the load, and difficult to adapt to high-load work. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a high-load nitrogen spring, aiming to solve the problem that the internal space of the cylinder body of the nitrogen spring in the prior art is usually fixed, resulting in a constant elastic pressure, unable to adjust the load, and difficult to adapt to high-load work.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the utility model adopts the following technical solutions:

[0008] A high-load nitrogen spring includes a cylinder body. A sealing and dust-proof component is detachably connected inside the cylinder body. One end of the cylinder body is slidably inserted with a piston rod, and the piston rod movably penetrates through the sealing and dust-proof component. A threaded pipe is rotatably connected inside the piston rod. A threaded rod is threadedly connected inside the threaded pipe. One end of the threaded rod is fixedly connected with a piston cylinder, and the piston cylinder is slidably connected to the circumferential inner wall of the cylinder body.

[0009] As a preferred scheme of the utility model, a stabilizing rod is fixedly connected inside the cylinder body, and both the threaded rod and the piston cylinder are slidably connected to the stabilizing rod.

[0010] As a preferred scheme of the utility model, a sliding component is fixedly connected to the outer surface of the piston rod, and the sliding component is slidably connected to the circumferential surface of the cylinder body.

[0011] As a preferred scheme of the utility model, an anti-rotation protrusion is fixedly connected inside the sliding component, and an anti-rotation groove is formed on the circumferential surface of the cylinder body, and the anti-rotation protrusion is slidably connected inside the anti-rotation groove.

[0012] As a preferred embodiment of the present utility model, one end of the piston rod is detachably connected with a connecting head, and the connecting head is located on one side of the cylinder block. One end of the cylinder block is detachably connected with a bearing head, and a spherical bearing is rotatably connected inside the bearing head.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) In this solution, nitrogen is added into the cylinder block and sealed by the sealing and dust-proof component. The sealed nitrogen corresponds to the piston cylinder in the cylinder block. By rotating the threaded pipe to control the threaded rod to adjust the position of the piston cylinder, the piston cylinder compresses the nitrogen in the cylinder block, thereby increasing the load of the nitrogen spring and meeting the application under high-load equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the sectional view of the present utility model;

[0018] Figure 3 is the exploded view of the present utility model.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Cylinder block; 2. Sealing and dust-proof component; 3. Piston rod; 4. Threaded pipe; 5. Threaded rod; 6. Piston cylinder; 7. Stabilizing rod; 8. Sliding component; 9. Anti-rotation protrusion; 10. Anti-rotation groove; 11. Connecting head; 12. Bearing head; 13. Spherical bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Embodiment:

[0025] Please refer to Figures 1-3 , a high-load nitrogen spring, which includes a cylinder body 1. A sealing and dust-proof component 2 is detachably connected inside the cylinder body 1. One end of the cylinder body 1 is slidably inserted with a piston rod 3, and the piston rod 3 movably penetrates through the sealing and dust-proof component 2. A threaded tube 4 is rotatably connected inside the piston rod 3. A threaded rod 5 is threadedly connected inside the threaded tube 4. One end of the threaded rod 5 is fixedly connected with a piston cylinder 6, and the piston cylinder 6 is slidably connected to the circumferential inner wall of the cylinder body 1.

[0026] In this embodiment, nitrogen is filled into the cylinder body 1 and sealed by the sealing and dust-proof component 2. When an external force compresses the piston rod 3, the nitrogen is compressed at the same time. When the external force is released, the high-pressure nitrogen expands, thereby obtaining a certain elastic pressure. When it is necessary to increase the load, by rotating the threaded tube 4, the threaded rod 5 expands and contracts inside the cylinder body 1, driving the piston cylinder 6 to slide inside the cylinder body 1, thereby compressing the nitrogen and increasing the bearing capacity of the piston rod 3.

[0027] Specifically, a stabilizing rod 7 is fixedly connected inside the cylinder body 1, and both the threaded rod 5 and the piston cylinder 6 are slidably connected to the stabilizing rod 7.

[0028] In this embodiment, when the threaded tube 4 adjusts the expansion and contraction of the threaded rod 5, the threaded rod 5 and the piston cylinder 6 slide on the outer surface of the stabilizing rod 7, and the stabilizing rod 7 ensures the stability of the adjustment of the threaded rod 5 and the piston cylinder 6.

[0029] Specifically, a sliding component 8 is fixedly connected to the outer surface of the piston rod 3, and the sliding component 8 is slidably connected to the circumferential surface of the cylinder body 1.

[0030] In this embodiment, when the piston rod 3 is stressed and expands or contracts, it drives the sliding assembly 8 to slide on the circumferential surface of the cylinder block 1. The sliding assembly 8 protects the piston rod 3 to prevent the piston rod 3 from being affected by eccentric loading during use.

[0031] Specifically, an anti-rotation protrusion 9 is fixedly connected inside the sliding assembly 8, and an anti-rotation groove 10 is formed on the circumferential surface of the cylinder block 1, and the anti-rotation protrusion 9 is slidably connected in the anti-rotation groove 10.

[0032] In this embodiment, when the sliding assembly 8 slides on the circumferential surface of the cylinder block 1, it drives the anti-rotation protrusion 9 to slide in the anti-rotation groove 10. The anti-rotation protrusion 9 and the anti-rotation groove 10 limit the rotation of the sliding assembly 8, so that the piston rod 3 can only move linearly, avoiding loosening of the head connection of the piston rod 3.

[0033] Specifically, one end of the piston rod 3 is detachably connected with a connector 11, and the connector 11 is located on one side of the cylinder block 1. One end of the cylinder block 1 is detachably connected with a bearing head 12, and a spherical bearing 13 is rotatably connected inside the bearing head 12.

[0034] In this embodiment, the head of the piston rod 3 is connected to the required position through the connector 11, and the bearing head 12 is movably hinged to the required position through the spherical bearing 13, and plays a role in buffering and shock absorption.

[0035] Working principle: Nitrogen is filled into the cylinder block 1 and sealed by the sealing and dust-proof assembly 2. The entire nitrogen spring is installed at the required position through the spherical bearing 13 in the connector 11 and the bearing head 12. When an external force compresses the piston rod 3, the nitrogen is compressed at the same time. When the external force is released, the high-pressure nitrogen expands, thereby obtaining a certain elastic pressure. When it is necessary to increase the load, by rotating the threaded tube 4, the threaded rod 5 expands and contracts in the cylinder block 1, driving the piston barrel 6 to slide in the cylinder block 1, thereby compressing the nitrogen and increasing the bearing capacity of the piston rod 3.

[0036] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high-load nitrogen spring, comprising a cylinder block (1), characterized in that: A sealing and dust-proof assembly (2) is detachably connected inside the cylinder block (1). A piston rod (3) is slidably inserted into one end of the cylinder block (1), and the piston rod (3) movably penetrates through the sealing and dust-proof assembly (2). A threaded pipe (4) is rotatably connected inside the piston rod (3). A threaded rod (5) is threadedly connected inside the threaded pipe (4). One end of the threaded rod (5) is fixedly connected to a piston cylinder (6), and the piston cylinder (6) is slidably connected to the circumferential inner wall of the cylinder block (1).

2. A high-load nitrogen spring according to claim 1, characterized in that: A stabilizing rod (7) is fixedly connected inside the cylinder block (1), and both the threaded rod (5) and the piston cylinder (6) are slidably connected to the stabilizing rod (7).

3. The high-load nitrogen spring according to claim 2, wherein: A sliding assembly (8) is fixedly connected to the outer surface of the piston rod (3), and the sliding assembly (8) is slidably connected to the circumferential surface of the cylinder block (1).

4. The high-load nitrogen spring according to claim 3, wherein: An anti-rotation protrusion (9) is fixedly connected inside the sliding assembly (8), and an anti-rotation groove (10) is formed on the circumferential surface of the cylinder block (1), and the anti-rotation protrusion (9) is slidably connected inside the anti-rotation groove (10).

5. A high-load nitrogen spring according to claim 4, characterized in that: One end of the piston rod (3) is detachably connected to a connection head (11), and the connection head (11) is located on one side of the cylinder block (1). One end of the cylinder block (1) is detachably connected to a bearing head (12), and a spherical bearing (13) is rotatably connected inside the bearing head (12).

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