Dustproof oil gas spring structure

Abstract

The utility model discloses a dustproof oil gas spring structure relates to oil gas spring field, including main working cylinder, the movable installation of piston rod is had on main working cylinder, and the fixed installation of first dust removal spare is in one end of main working cylinder, and first dust removal spare is set up on piston rod simultaneously, and first dust removal spare contains annular hard shell, installs base column, installs connecting plate, fixed base ring, rubber arc block, arc rubber strip and annular spring, through setting up first dust removal spare and second dust removal spare on main working cylinder and piston rod, and the hard cone cylinder of second dust removal spare is close to piston rod to can scrape the larger particle dust and impurity that adhered on piston rod, reduce the larger impurity and enter subsequent dust removal link, and the rubber arc block of first dust removal spare is close to piston rod under the action of annular spring to further scrape the smaller particle dust and impurity that adhered on piston rod, cooperate through the cooperation of double dust removal structure, has improved dustproof effect significantly.

Description

Technical Field

[0001] This utility model relates to the field of gas springs, and in particular to a dustproof gas spring structure. Background Technology

[0002] Gas springs, as elastic elements combining gas elasticity and liquid damping, are widely used in engineering machinery, heavy vehicles, and rail transportation due to their high load-bearing capacity, adjustable stiffness, and excellent buffering performance. They primarily achieve elasticity through the relative movement of the main working cylinder and piston rod, utilizing the compression and expansion of gas in a closed chamber, and generating a damping effect through the flow of liquid, thereby effectively reducing vibration and absorbing impact.

[0003] In practical applications, the piston rod of a gas spring needs to frequently extend and retract to adapt to vibration and displacement adjustments under different working conditions. However, the piston rod of a traditional gas spring is exposed to the external environment, which is often complex, especially in dusty places such as mines, construction sites, and deserts. Dust, sand, and dirt easily adhere to the outer wall of the piston rod. When the piston rod extends and retracts, these dust and impurities attached to its surface move towards the inside of the main working cylinder. Due to the need for improvement in the dustproof design of traditional structures, some impurities may directly enter the internal cavity of the gas spring. Impurities entering the interior will accelerate the wear between the piston rod and the seals, leading to a decrease in sealing performance and subsequent oil and gas leakage. At the same time, impurities may also contaminate the internal working medium (oil and gas), affecting the damping effect and the stability of elastic performance. In severe cases, it may even cause the gas spring to fail, shorten its service life, and increase the risk of equipment failure. Therefore, this application proposes a dustproof gas spring structure to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a dustproof gas spring structure, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A dustproof hydropneumatic spring structure includes a main working cylinder with a piston rod movably mounted on it. A first dust removal component is fixedly mounted at one end of the main working cylinder and is also sleeved on the piston rod. The first dust removal component includes an annular rigid shell, mounting base columns, mounting connecting plates, fixing base rings, rubber arc-shaped blocks, arc-shaped rubber strips, and annular springs. Two mounting base columns and two fixing base rings are provided. The two mounting base columns are symmetrically fixedly mounted inside the annular rigid shell, and the two fixing base rings are symmetrically mounted vertically inside the annular rigid shell. Four mounting connecting plates are provided. Furthermore, the rubber arc-shaped blocks are symmetrically fixed on the outer walls of the two fixed base rings in pairs. Several of the rubber arc-shaped blocks are fixedly installed in a ring on the upper end of the two fixed base rings. Several of the arc-shaped rubber strips are fixedly installed on the outer walls of the several rubber arc-shaped blocks respectively. There are two annular springs, and the annular springs are installed inside the several arc-shaped rubber strips distributed in a ring. A second dust removal component is fixedly installed at one end of the annular rigid shell. The second dust removal component is also sleeved on the piston rod. The second dust removal component consists of a rigid base ring and a rigid cone. The rigid cone is fixedly installed at one end of the rigid base ring.

[0007] Preferably, a secondary working cylinder is fixedly installed on one side of the main working cylinder.

[0008] Preferably, the annular hard shell on the first dust removal component is fixedly installed at one end of the main working cylinder. The annular hard shell is sleeved on the piston rod but does not contact the piston rod. The mounting connecting plate has a fitting through hole, and the mounting connecting plate is fixedly sleeved on the mounting base column through the fitting through hole.

[0009] Preferably, the fixing base ring is sleeved on the piston rod but does not contact the piston rod. The rubber arc-shaped block fixedly installed at the upper end of the upper fixing base ring and the rubber arc-shaped block fixedly installed at the upper end of the lower fixing base ring are staggered and the rubber arc-shaped block is in contact with the piston rod. An arc-shaped storage groove is opened on the outer wall of the arc-shaped rubber strip, and the annular spring is installed in the arc-shaped storage groove opened on the outer wall of several arc-shaped rubber strips.

[0010] Preferably, the hard base ring on the second dust removal component is fixedly installed at one end of the annular hard shell, and both the hard base ring and the hard cone are sleeved on the piston rod. At the same time, the hard base ring and the hard cone are close to the piston rod but do not contact the piston rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By installing a first dust removal component consisting of a ring-shaped hard outer shell, a mounting base column, a mounting connecting plate, a fixing base ring, a rubber arc-shaped block, an arc-shaped rubber strip, and a ring spring on the main working cylinder and piston rod, and a second dust removal component consisting of a hard base ring and a hard cone, the hard cone of the second dust removal component is close to the piston rod, thereby scraping off larger dust particles and impurities adhering to the piston rod and reducing the entry of larger impurities into subsequent dust removal stages. The rubber arc-shaped block of the first dust removal component is pressed tightly against the piston rod under the force of the ring spring, thereby further scraping off smaller dust particles and impurities adhering to the piston rod. Through the cooperation of the dual dust removal structure, the dust prevention effect is significantly improved, preventing impurities from entering the interior of the gas spring, reducing wear between the piston rod and the seals inside the gas spring, reducing the risk of oil and gas leakage, protecting the internal working medium, ensuring the stability of damping effect and elastic performance, extending the service life of the gas spring, and reducing the risk of equipment failure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first dust removal component and the second dust removal component of this utility model;

[0015] Figure 3 This is a cross-sectional schematic diagram of the annular rigid outer shell of the first dust removal component of this utility model;

[0016] Figure 4 This is a schematic diagram of the installation connecting plate, fixing base ring, rubber arc block, arc rubber strip and annular spring of this utility model.

[0017] In the diagram: 1. Main working cylinder; 2. Piston rod; 3. First dust collector; 4. Second dust collector; 5. Auxiliary working cylinder; 6. Hard base ring; 7. Hard cone; 8. Annular hard outer shell; 9. Mounting base column; 10. Mounting connecting plate; 11. Fitting through hole; 12. Fixing base ring; 13. Rubber arc block; 14. Arc rubber strip; 15. Arc storage groove; 16. Annular spring. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figure 1 - Figure 4As shown, a dustproof hydropneumatic spring structure includes a main working cylinder 1, a piston rod 2 movably mounted on the main working cylinder 1, and a first dust removal component 3 fixedly mounted at one end of the main working cylinder 1. The first dust removal component 3 is also sleeved on the piston rod 2. The first dust removal component 3 includes an annular rigid shell 8, mounting base columns 9, mounting connecting plates 10, fixing base rings 12, rubber arc blocks 13, arc rubber strips 14, and annular springs 16. Two mounting base columns 9 and two fixing base rings 12 are provided. The two mounting base columns 9 are symmetrically fixedly mounted inside the annular rigid shell 8, and the two fixing base rings 12 are positioned vertically and horizontally. Symmetrically installed inside the annular rigid outer shell 8, four mounting connecting plates 10 are symmetrically fixed in pairs on the outer walls of the two fixing base rings 12. Several rubber arc-shaped blocks 13 are fixedly installed in a ring on the upper ends of the two fixing base rings 12. Several arc-shaped rubber strips 14 are fixedly installed on the outer walls of the several rubber arc-shaped blocks 13 respectively. There are two annular springs 16, which are installed inside the several arc-shaped rubber strips 14 distributed in a ring. A second dust collector 4 is fixedly installed at one end of the annular rigid outer shell 8. The second dust collector 4 is also sleeved on the piston rod 2. The second dust collector 4 consists of a hard base ring 6 and a hard cone 7. The hard cone 7 is fixedly installed at one end of the hard base ring 6. By setting a first dust collector 3, which consists of an annular hard shell 8, a mounting base column 9, a mounting connecting plate 10, a fixed base ring 12, a rubber arc block 13, an arc rubber strip 14, and an annular spring 16, and a second dust collector 4, which consists of a hard base ring 6 and a hard cone 7, on the main working cylinder 1 and the piston rod 2, the hard cone 7 of the second dust collector 4 is close to the piston rod 2, thereby scraping off larger dust particles and impurities attached to the piston rod 2, reducing the amount of larger impurities. In the subsequent dust removal stage, the rubber arc-shaped block 13 of the first dust removal component 3 is pressed tightly against the piston rod 2 under the force of the annular spring 16, thereby further scraping off the smaller dust particles and impurities attached to the piston rod 2. Through the cooperation of the dual dust removal structure, the dust prevention effect is significantly improved, preventing impurities from entering the oil-gas spring, reducing the wear between the piston rod 2 and the seals inside the oil-gas spring, reducing the risk of oil and gas leakage, protecting the internal working medium, ensuring the stability of the damping effect and elastic performance, extending the service life of the oil-gas spring, and reducing the risk of equipment failure.

[0020] Specifically, a secondary working cylinder 5 is fixedly installed on one side of the main working cylinder 1. When the oil-gas spring is working, the main working cylinder 1 and the piston rod 2 undergo relative extension and retraction. The elastic effect is achieved by the compression and expansion of the gas in the closed air chamber inside the main working cylinder 1. At the same time, the damping effect is generated by the flow of liquid to reduce vibration and absorb impact. The secondary working cylinder 5 assists the main working cylinder 1 in completing the above working process.

[0021] Specifically, the annular hard outer shell 8 on the first dust collector 3 is fixedly installed at one end of the main working cylinder 1. The annular hard outer shell 8 is sleeved on the piston rod 2 but does not contact the piston rod 2. The mounting connecting plate 10 has a fitting through hole 11. The mounting connecting plate 10 is fixedly sleeved on the mounting base column 9 through the fitting through hole 11. The fixing base ring 12 is sleeved on the piston rod 2 but does not contact the piston rod 2. The rubber arc-shaped block 13 fixedly installed at the upper end of the upper fixing base ring 12 and the rubber arc-shaped block 13 fixedly installed at the upper end of the lower fixing base ring 12 are staggered and contact the piston rod 2. The outer wall of the arc-shaped rubber strip 14 has an arc-shaped storage groove 15. The annular spring 16 is installed in the arc-shaped storage groove 15 opened on the outer wall of several arc-shaped rubber strips 14. The hard base ring 6 on the second dust collector 4 is fixedly installed on the annular hard outer shell 9. At one end of the shell 8, both the hard base ring 6 and the hard cone 7 are fitted onto the piston rod 2. At the same time, the hard base ring 6 and the hard cone 7 are close to the piston rod 2 but do not contact the piston rod 2. The distance between the hard cone 7 and the piston rod 2 needs to be set so that it can effectively scrape off larger dust and impurities without contacting the piston rod 2, ensuring that the extension and retraction of the piston rod 2 is not hindered. The rubber arc block 13 fixedly installed on the upper end of the upper fixed base ring 12 and the rubber arc block 13 fixedly installed on the upper end of the lower fixed base ring 12 are distributed alternately. This staggered structure allows several rubber arc blocks 13 to be combined to completely cover the outer wall of the piston rod 2. No matter which position of the piston rod 2 passes the first dust removal component 3 during the extension and retraction movement, its outer wall can contact the corresponding rubber arc block 13, thereby ensuring that the outer wall of the piston rod 2 can be cleaned by the rubber arc block 13.

[0022] During the extension and retraction of the piston rod 2, the second dust removal component 4 takes effect first. Its rigid cone 7 is close to the piston rod 2. When the piston rod 2 retracts inward, the rigid cone 7 can scrape off the larger dust particles and impurities attached to the surface of the piston rod 2, reducing the entry of larger impurities into the subsequent dust removal process. Then, the first dust removal component 3 further removes dust. At this time, under the action of the annular spring 16, the arc-shaped rubber strip 14 drives the rubber arc block 13 to always be in close contact with the piston rod 2, and the rubber arc blocks 13 on the upper fixed base ring 12 and the lower fixed base ring 12 are intertwined. When the piston rod 2 moves past the first dust removal component 3, the rubber arc block 13 can further scrape off the smaller dust particles and impurities remaining on the piston rod 2. Through the dual cooperation of the second dust removal component 4 and the first dust removal component 3, the dust and impurities on the surface of the piston rod 2 are effectively removed.

[0023] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A dustproof gas spring structure, comprising a main working cylinder (1), wherein a piston rod (2) is movably mounted on the main working cylinder (1), characterized in that: One end of the main working cylinder (1) is fixedly installed with a first dust removal component (3), which is also sleeved on the piston rod (2). The first dust removal component (3) includes an annular hard shell (8), mounting base (9), mounting connecting plate (10), fixing base ring (12), rubber arc block (13), arc rubber strip (14), and annular spring (16). There are two mounting bases (9) and two fixing base rings (12). The two mounting bases (9) are symmetrically fixedly installed inside the annular hard shell (8), and the two fixing base rings (12) are symmetrically installed inside the annular hard shell (8). There are four mounting connecting plates (10), which are symmetrically fixedly installed in pairs on the two fixing bases. On the outer wall of the base ring (12), there are several rubber arc blocks (13) and they are fixedly installed in a ring at the upper end of two fixed base rings (12). There are several arc rubber strips (14) and they are fixedly installed on the outer wall of several rubber arc blocks (13). There are two ring springs (16) and the ring springs (16) are installed in several arc rubber strips (14) distributed in a ring. A second dust removal component (4) is fixedly installed at one end of the ring hard shell (8). The second dust removal component (4) is also sleeved on the piston rod (2). The second dust removal component (4) is composed of a hard base ring (6) and a hard cone (7). The hard cone (7) is fixedly installed at one end of the hard base ring (6).

2. The dustproof gas spring structure according to claim 1, characterized in that: A secondary working cylinder (5) is fixedly installed on one side of the main working cylinder (1).

3. The dustproof gas spring structure according to claim 2, characterized in that: The annular hard shell (8) on the first dust removal component (3) is fixedly installed at one end of the main working cylinder (1). The annular hard shell (8) is sleeved on the piston rod (2) and does not contact the piston rod (2). The mounting connecting plate (10) has a fitting through hole (11). The mounting connecting plate (10) is fixedly sleeved on the mounting base column (9) through the fitting through hole (11).

4. The dustproof gas spring structure according to claim 3, characterized in that: The fixed base ring (12) is sleeved on the piston rod (2) and does not contact the piston rod (2). The rubber arc block (13) fixedly installed on the upper end of the upper fixed base ring (12) and the rubber arc block (13) fixedly installed on the upper end of the lower fixed base ring (12) are staggered. The rubber arc block (13) is in contact with the piston rod (2). The outer wall of the arc rubber strip (14) is provided with an arc storage groove (15). The ring spring (16) is installed in the arc storage groove (15) opened on the outer wall of several arc rubber strips (14).

5. The dustproof gas spring structure according to claim 4, characterized in that: The hard base ring (6) on the second dust removal component (4) is fixedly installed at one end of the annular hard shell (8). The hard base ring (6) and the hard cone (7) are both sleeved on the piston rod (2). At the same time, the hard base ring (6) and the hard cone (7) are close to the piston rod (2) and neither of them is in contact with the piston rod (2).

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