High-strength safety nitrogen spring

Abstract

The utility model relates to the technical field of traction supports, in particular to a high-strength safety type nitrogen spring which comprises a main body, the main body is made of high-strength alloy steel, reinforcing ribs are arranged in the main body and evenly distributed in a latticed mode, a piston rod is connected in the main body in a sliding mode, and the surface of the piston rod is subjected to chromium plating treatment. A hard and smooth chromium-plated layer is formed on the main body, buffer pads are mounted at two ends of the main body and are made of high-elasticity rubber materials, and a protective sleeve is additionally arranged outside the main body and is made of fireproof and explosion-proof composite materials with certain strength. According to the nitrogen spring, the main body is made of high-strength alloy steel, the internal reinforcing ribs are arranged, and the piston rod is subjected to chromium plating treatment, so that the strength, the wear resistance and the corrosion resistance of the nitrogen spring are remarkably improved, the nitrogen spring can adapt to high-load and complex working environments, the fault occurrence frequency is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to traction support technical field especially relates to a high strength safety type nitrogen spring. BACKGROUND

[0002] Nitrogen spring is a kind of elasticity element with high-pressure nitrogen as working medium, utilizes the pressure change generated by nitrogen at different volumes to provide elastic force, has the advantages such as small volume, big elastic force, long stroke, stable work, long service life, is widely used in mould, automobile, aerospace etc.

[0003] The existing related technology often has the following defects: in mould manufacturing, automobile production etc. High-strength operation environment, nitrogen spring needs to bear large pressure and impact force frequently, piston rod is easy to bend and deform, leading to the friction between the cylinder and the cylinder increases, and even be stuck seriously, so that the equipment cannot normally operate, the cylinder may also crack due to the pressure, and the like, and further cause nitrogen leakage, not only will damage the equipment itself, but also can cause safety threat to surrounding equipment and personnel.

[0004] Therefore, the utility model provides a high strength safety type nitrogen spring. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings that nitrogen spring use strength cannot meet the use demand in the prior art, and provides a high strength safety type nitrogen spring.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a high strength safety type nitrogen spring, including main body, the main body adopts high-strength alloy steel material manufacturing, the main body is internally provided with reinforcing rib, and the reinforcing rib is evenly distributed in grid shape.

[0007] The effect reached by the above-mentioned components is that high-strength alloy steel material and internal reinforcing rib cooperate, significantly improve the strength of nitrogen spring, make it can operate stably under high load, harsh working environment, reduce the damage risk caused by strength problem, prolong the service life, reduce the equipment downtime maintenance time, improve production efficiency.

[0008] Preferably, the inside of the main body is slidably connected with a piston rod, the surface of the piston rod is treated with chrome plating, forming a hard and smooth chrome plating layer.

[0009] The effects achieved by the above-mentioned components are that the chromium plating layer has high hardness and good wear resistance, can reduce the friction coefficient between the piston rod and the inner wall of the main body, and reduce the degree of wear, and the chromium plating layer also has good corrosion resistance, can prevent the piston rod from rusting in a humid or corrosive environment, ensure the stable performance of the piston rod, effectively improve the wear resistance and corrosion resistance of the piston rod, ensure that the movement accuracy and sealing performance of the piston rod are not affected during long-term use of the nitrogen gas spring, maintain the stable elastic force output of the nitrogen gas spring, and improve the reliability of equipment operation.

[0010] Preferably, a buffer pad is mounted at both ends of the main body, and the buffer pad is made of high-elastic rubber material.

[0011] The effects achieved by the above-mentioned components are that when the piston rod is extended to the limit position or subjected to external impact during the operation of the nitrogen gas spring, the buffer pad can play a buffering role, absorb impact energy, reduce the impact force on the main body and components connected thereto, reduce vibration and noise, and effectively protect the nitrogen gas spring and related equipment, reduce damage to the equipment caused by impact, prolong the service life of the equipment, improve the working environment, reduce the influence of noise and vibration on the operator, and improve the comfort and safety of work.

[0012] Preferably, a protective sleeve is additionally provided outside the main body, and the protective sleeve is made of a composite material with fireproof, explosion-proof and certain strength.

[0013] The effects achieved by the above-mentioned components are that when the nitrogen gas spring is in a dangerous environment with fire hazards or flammable and explosive gases, the protective sleeve can effectively block the fire source and explosion shock wave, prevent the nitrogen gas spring from being damaged by external factors, avoid causing more serious safety accidents, provide additional safety protection for the nitrogen gas spring in a dangerous environment, widen the application range of the nitrogen gas spring, enable the nitrogen gas spring to safely operate under some special working conditions, and further improve the overall safety performance.

[0014] Preferably, a polytetrafluoroethylene sealing gasket is glued to the upper end of the main body, and the polytetrafluoroethylene sealing gasket is located outside the piston rod.

[0015] The effects achieved by the above-mentioned components are that the polytetrafluoroethylene sealing gasket greatly enhances the sealing performance of the nitrogen gas spring, reduces the problem of elastic force reduction caused by nitrogen leakage, ensures the stability and reliability of the nitrogen gas spring, reduces the maintenance cost, and prolongs the maintenance cycle.

[0016] Preferably, the upper surface of the polytetrafluoroethylene sealing gasket is glued with a rubber sealing ring, and a sealing groove is formed in the upper end of the rubber sealing ring.

[0017] Preferably, the inner side of the sealing groove is slidably connected with an insertion ring, and the inner diameter of the insertion ring is matched with the outer diameter of the piston rod.

[0018] In summary:

[0019] 1. In the utility model, the main body is made of high-strength alloy steel and is provided with internal reinforcing ribs, and the piston rod is chrome-plated, so that the strength, wear resistance and corrosion resistance of the nitrogen gas spring are improved, the nitrogen gas spring can adapt to high-load and complex working environments, the failure frequency is reduced, and the production efficiency is improved.

[0020] 2. In the utility model, the safety performance of the nitrogen gas spring is improved from the aspects of impact buffering, sealing guarantee and external protection by means of the rubber sealing ring, the buffer pad, the polytetrafluoroethylene sealing gasket and the protective sleeve, the occurrence of safety accidents is effectively avoided, the safety of equipment and personnel is ensured, and the adaptability and reliability of the product in various application scenarios are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the partial structure of the utility model; Figure 2

[0024] Figure 4 It is a schematic diagram of the structure of the rubber sealing ring in the utility model.

[0025] Legend: 1, main body; 2, reinforcing rib; 3, piston rod; 4, chrome plating layer; 5, polytetrafluoroethylene sealing gasket; 6, buffer pad; 7, rubber sealing ring; 8, protective sleeve; 9, insertion ring; 10, sealing groove. DETAILED DESCRIPTION

[0026] Referring to Figure 1 ​The utility model provides a technical scheme: a high strength safety type nitrogen gas spring, including main body 1.

[0027] The specific settings and effects of the whole will be discussed below.

[0028] In the embodiment: main body 1 adopts high-strength alloy steel material, and the inside of main body 1 is equipped with reinforcing rib 2, and the reinforcing rib is in grid shape and is uniformly distributed. High-strength alloy steel material and internal reinforcing rib 2 cooperate, significantly improve the strength of nitrogen gas spring, make it can be stable operation under high load, harsh working environment, reduce the damage risk caused by strength problem, prolong the service life, reduce the equipment downtime maintenance time, improve production efficiency. The inside of main body 1 is slidably connected with piston rod 3, and the surface of piston rod 3 is treated with chromium plating, and a hard and smooth chromium plating layer 4 is formed. Chromium plating layer 4 is high in hardness and good in wear resistance, can reduce the friction coefficient between piston rod 3 and the inner wall of main body 1, reduce the wear degree, meanwhile, chromium plating layer 4 also has good corrosion resistance, can prevent piston rod 3 from rusting in humid or corrosive environment, ensure its stable performance, chromium plating layer 4 effectively improves the wear resistance and corrosion resistance of piston rod 3, ensures that the movement accuracy and sealing performance of piston rod 3 are not affected during long-term use of nitrogen gas spring, maintains the stable elastic force output of nitrogen gas spring, improves the reliability of equipment operation. The both ends of main body 1 are provided with buffer pad 6, and buffer pad 6 is made of high-elasticity rubber material. In the working process of nitrogen gas spring, when piston rod 3 is extended to the limit position or is impacted from outside, buffer pad 6 can play a buffering role, absorb impact energy, reduce the impact force on main body 1 and the components connected therewith, reduce vibration and noise, and buffer pad 6 effectively protects nitrogen gas spring itself and related equipment, reduces the damage of impact to the equipment, prolongs the service life of the equipment, improves the working environment, reduces the influence of noise and vibration on the operating personnel, improves the comfort and safety of work. The outer part of main body 1 is additionally provided with protective sleeve 8, and protective sleeve 8 is made of composite material with fireproof, explosion-proof and certain strength. When nitrogen gas spring is in the dangerous environment with fire hazard or flammable and explosive gas, protective sleeve 8 can effectively block the fire source and explosion shock wave, prevent nitrogen gas spring from being damaged by external factors, avoid causing more serious safety accidents, protective sleeve 8 provides additional safety protection for nitrogen gas spring in dangerous environment, widens the application range of nitrogen gas spring, makes it can be safely operated under some special working conditions, further improves the overall safety performance.

[0029] Specifically, the upper end of the main body 1 is glued with a polytetrafluoroethylene sealing gasket 5, and the polytetrafluoroethylene sealing gasket 5 is located outside the piston rod 3. The polytetrafluoroethylene sealing gasket 5 greatly enhances the sealing performance of the nitrogen spring, reduces the problem of elastic force reduction caused by nitrogen leakage, ensures the stability and reliability of the nitrogen spring, reduces the maintenance cost, and prolongs the maintenance period. The upper surface of the polytetrafluoroethylene sealing gasket 5 is glued with a rubber sealing ring 7, and the upper end of the rubber sealing ring 7 is provided with a sealing groove 10. A double-layer sealing material combination is adopted, including the high-performance rubber sealing ring 7 and the polytetrafluoroethylene sealing gasket 5, and the sealing groove 10 is arranged on the sealing contact surface. This design can effectively improve the sealing performance, prevent nitrogen leakage, ensure the stability of the internal pressure of the nitrogen spring, and maintain good elastic performance. The inner side of the sealing groove 10 is slidably connected with an insertion ring 9, and the inner diameter of the insertion ring 9 is matched with the outer diameter of the piston rod 3. The insertion ring 9 is sleeved on the outer side of the piston rod 3 and inserted into the inner side of the sealing groove 10, so that the tightness of the rubber sealing ring 7 on the piston rod 3 is improved, and the sealing performance of the nitrogen spring is further improved.

[0030] When the nitrogen spring works, high-pressure nitrogen gas generates pressure in the main body 1, pushes the piston rod 3 to move, the high-strength main body 1 and the reinforcing ribs 2 jointly bear the pressure, ensure the stability of the structure, the chromium plating layer 4 on the surface of the piston rod 3 reduces friction and wear, makes the movement more smooth, the buffer pad 6 absorbs energy when the piston rod 3 moves to the limit position or is impacted, protects the equipment, the protective sleeve 8 provides additional protection for the nitrogen spring in a dangerous environment, the polytetrafluoroethylene sealing gasket 5 greatly enhances the sealing performance of the nitrogen spring, reduces the problem of elastic force reduction caused by nitrogen leakage, ensures the stability and reliability of the nitrogen spring, reduces the maintenance cost, and prolongs the maintenance period. A double-layer sealing material combination is adopted, including the high-performance rubber sealing ring 7 and the polytetrafluoroethylene sealing gasket 5, and the sealing groove 10 is arranged on the sealing contact surface. This design can effectively improve the sealing performance, prevent nitrogen leakage, ensure the stability of the internal pressure of the nitrogen spring, and maintain good elastic performance. The insertion ring 9 is sleeved on the outer side of the piston rod 3 and inserted into the inner side of the sealing groove 10, so that the tightness of the rubber sealing ring 7 on the piston rod 3 is improved, and the sealing performance of the nitrogen spring is further improved.

[0031] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A high-strength safety nitrogen gas spring comprising a main body (1), characterized in that: The main body (1) is made of high-strength alloy steel, and the main body (1) is internally provided with reinforcing ribs (2) which are uniformly distributed in a grid shape.

2. The high-strength safety nitrogen gas spring according to claim 1, wherein: A piston rod (3) is slidably connected to the inside of the main body (1), and the surface of the piston rod (3) is treated by chrome plating to form a hard and smooth chrome plating layer (4).

3. The high-strength safety nitrogen gas spring according to claim 1, wherein: Buffer pads (6) are installed at both ends of the main body (1), and the buffer pads (6) are made of high-elastic rubber material.

4. The high-strength safety nitrogen gas spring according to claim 1, wherein: A protective sleeve (8) is additionally arranged outside the main body (1), and the protective sleeve (8) is made of composite material which is fireproof, explosion-proof and has certain strength.

5. The high-strength safety nitrogen gas spring according to claim 1, wherein: A polytetrafluoroethylene sealing gasket (5) is glued to the upper end of the main body (1), and the polytetrafluoroethylene sealing gasket (5) is located outside the piston rod (3).

6. The high-strength safety nitrogen gas spring according to claim 5, wherein: A rubber sealing ring (7) is glued to the upper surface of the polytetrafluoroethylene sealing gasket (5), and a sealing groove (10) is formed in the upper end of the rubber sealing ring (7).

7. The high-strength safety nitrogen gas spring according to claim 6, wherein: A plug ring (9) is slidably inserted into the inside of the sealing groove (10), and the inner diameter of the plug ring (9) is matched with the outer diameter of the piston rod (3).

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