Self-release controllable lifting gas spring

Abstract

The invention discloses a self-release controllable lifting gas spring, and relates to the technical field of gas springs, the self-release controllable lifting gas spring comprises a main rod, the top of the main rod is slidably connected with a piston rod, the top of the piston rod is provided with a valve rod, the outer part of the top of the main rod is provided with an anti-corrosion mechanism and a cleaning mechanism, and the anti-corrosion mechanism comprises a first lantern ring; and an oil cavity is formed in the first lantern ring, a sponge block is arranged in the first lantern ring, the inner wall of the sponge block is slidably connected with the outer wall of the piston rod, and a rotating ring is rotatably connected to the middle of the first lantern ring. According to the self-release controllable lifting gas spring, through cooperative work of the cleaning mechanism and the anti-corrosion mechanism, impurities on the surface of the piston rod are removed through graded cleaning, then matched lubricating media are continuously supplemented through a sponge block to form a stable protective oil film, oil film failure and impurity damage are effectively avoided, and the service life of the gas spring is prolonged. The problem of corrosion and abrasion of the piston rod is fundamentally solved, and long-term reliable operation of the gas spring is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas springs, in particular to a self-releasing controllable lifting gas spring. BACKGROUND

[0002] The self-releasing controllable lifting gas spring is a kind of elastic supporting component with active release control function, which is widely used in outdoor intelligent equipment, agricultural machinery, engineering machinery and outdoor furniture and other scenes due to its advantages of stable lifting, convenient operation and strong bearing capacity. Its core structure includes a main rod, a piston rod that can slide along the main rod, and a valve rod for controlling the release action.

[0003] The self-releasing controllable lifting gas spring in the prior art is pre-coated with special lubricating grease at the factory, which mainly plays a role in lubrication and anti-oxidation and anti-corrosion. However, in the actual use process, the dust flushing, rain erosion, high and low temperature alternating cycle and frequent reciprocating friction of the piston rod in the outdoor environment can cause the pre-coated lubricating grease to be quickly lost, aged or contaminated, thereby gradually damaging and disappearing the protective oil film on the surface of the piston rod, and ultimately causing the piston rod to wear and rust, which seriously affects the service life of the gas spring.

[0004] Therefore, a self-releasing controllable lifting gas spring is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the shortcomings of the prior art and the problem of easy wear and rust of the piston rod, a self-releasing controllable lifting gas spring is proposed.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a self-releasing controllable lifting gas spring, comprising a main rod, a piston rod slidably connected to the top of the main rod, and a valve rod provided at the top of the piston rod, a rust-proof mechanism and a cleaning mechanism are installed on the outside of the top of the main rod, the rust-proof mechanism comprises a sleeve ring one, an oil cavity is formed in the inside of the sleeve ring one, a sponge block is arranged in the inside of the sleeve ring one, and the inner wall of the sponge block is slidably connected with the outer wall of the piston rod.

[0007] Preferably, a rotating ring is rotatably connected to the middle part of the sleeve ring one, a through oil cavity oil delivery pipe is fixedly connected to the middle part of the rotating ring, a sealing plug is inserted into the top of the oil delivery pipe, a plurality of circular tubes are arranged in the inside of the oil cavity, a plurality of circular holes are formed in the outer wall of the circular tubes, and the outer wall of the circular tubes abuts against the outer wall of the sponge block.

[0008] Preferably, a push oil plate is fixedly connected to the inner wall of the rotating ring, and the outer wall of the push oil plate is attached to the inner wall of the oil cavity and the inner wall of the circular tube.

[0009] Preferably, a threaded sleeve is fixedly connected to one side of the collar, and a fixing member is fixedly connected to the outer wall of the top of the main rod, with the inner wall of the fixing member threadedly connected to the outer wall of the threaded sleeve.

[0010] Preferably, the cleaning mechanism includes a cleaning box fixedly connected to the collar on the side away from the main rod. A slide rail is fixedly connected inside the cleaning box, and an annular brush is slidably connected to the outer surface of the slide rail. The end of the annular brush is in contact with the outer wall of the piston rod.

[0011] Preferably, a rubber arc-shaped scraper is provided in the middle of one end of the cleaning box, and the inner wall of the rubber arc-shaped scraper maintains a slight gap with the outer wall of the piston rod.

[0012] Preferably, a sanding roller is rotatably connected inside the cleaning box, and a bevel gear set is provided at the end of the sanding roller. A take-up post is fixedly connected inside the cleaning box. The outer wall of the take-up post and the outer wall of the sanding roller are respectively fixedly connected to the middle of the two gears of the bevel gear set. A traction rope is wound around the outer wall of the annular brush, and one end of the traction rope is fixedly connected to the outer wall of the take-up post.

[0013] Preferably, a coil spring is fixedly connected to the outer wall of the slide rail, and one end of the coil spring is fixedly connected to the outer wall of the annular brush.

[0014] Preferably, a metal mesh is provided in the middle of the cleaning box, and the metal mesh is located outside the annular brush.

[0015] Preferably, the inner wall of the annular brush is funnel-shaped, and the side with the larger opening of the inner wall of the annular brush faces the valve stem.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: 1. This invention provides a self-releasing controllable lifting gas spring. Through the coordinated work of a cleaning mechanism and an anti-rust mechanism, impurities on the piston rod surface are first removed by graded cleaning, and then a stable protective oil film is formed by continuously replenishing the matching lubricating medium through a sponge block. This effectively avoids oil film failure and impurity damage, solves the problem of piston rod corrosion and wear from the root, and ensures long-term reliable operation of the gas spring.

[0017] 2. This invention provides a self-releasing controllable lifting gas spring, which can be quickly disassembled and assembled through threaded connection, facilitating media replenishment and maintenance. The cleaning mechanism uses the movement of the piston rod to drive the abrasive roller transmission, and works with the coil spring to achieve reciprocating cleaning of the ring brush. No additional power is required. The graded cleaning and the trumpet-shaped brush structure improve the cleaning effect. The metal mesh design takes into account both protection and dust removal. The overall structure is stable and easy to use, significantly reducing maintenance costs.

[0018] 3. This invention provides a self-release controllable lifting gas spring, which improves the environmental adaptability and service life of the self-release controllable lifting gas spring. The protective oil film is compatible with the sealing structure, avoiding sealing failure caused by additional oiling. The synergistic effect of cleaning and rust prevention ensures the stable performance of the core components, enabling it to be stably applied in harsh environments such as outdoor intelligent equipment and agricultural machinery, without affecting the original lifting and releasing functions of the gas spring. Its practicality and reliability are significantly enhanced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the anti-corrosion mechanism of the present invention. Figure 3 This is a schematic cross-sectional view of the collar structure of the present invention; Figure 4 This is a schematic cross-sectional view of the cleaning box structure of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the annular brush of the present invention.

[0020] In the diagram: 1. Main rod; 2. Piston rod; 3. Valve rod; 4. Anti-corrosion mechanism; 41. Collar I; 42. Oil chamber; 43. Round tube; 44. Sponge block; 45. Rotating ring; 46. Push plate; 47. Threaded sleeve; 48. Fixing component; 49. Oil delivery pipe; 410. Sealing plug; 5. Cleaning mechanism; 51. Cleaning box; 52. Rubber arc-shaped scraper; 53. Slide rail; 54. Circular brush; 55. Abrasive roller; 56. Bevel gear set; 57. Cable take-up post; 58. Traction rope; 59. Coil spring; 510. Metal mesh. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Specific implementation examples are given below.

[0023] Please see Figure 1 - Figure 5This invention provides a technical solution: a self-releasing controllable lifting gas spring, including a main rod 1, a piston rod 2 slidably connected to the top of the main rod 1, a valve rod 3 disposed on the top of the piston rod 2, and an anti-corrosion mechanism 4 and a cleaning mechanism 5 installed on the outside of the top of the main rod 1. The anti-corrosion mechanism 4 includes a collar 41, an oil cavity 42 opened inside the collar 41, and a sponge block 44 disposed inside the collar 41. The inner wall of the sponge block 44 is slidably connected to the outer wall of the piston rod 2. Through the tight fit between the sponge block 44 and the piston rod 2, the oil cavity 42 can stably store the same lubricating medium as the gas spring. The sponge block 44 can uniformly absorb the medium and continuously form a protective oil film on its surface when the piston rod 2 reciprocates, effectively achieving the functions of anti-oxidation and anti-corrosion, while avoiding damage to the gas spring sealing structure caused by additional oiling, and ensuring the long-term stability of the self-releasing controllable lifting function and sealing performance.

[0024] It should be noted that the gas spring composed of the main rod 1, piston rod 2 and valve rod 3 can achieve self-release and controllable lifting and lowering by operating the valve rod 3. This structure and technology are common in existing technologies, so its internal structure and principle will not be elaborated here.

[0025] like Figure 2 and Figure 3 As shown, a rotating ring 45 is rotatably connected to the middle of the collar 41, and an oil supply pipe 49 that passes through the oil cavity 42 is fixedly connected to the middle of the rotating ring 45. A sealing plug 410 is inserted into the top of the oil supply pipe 49. Several round tubes 43 are arranged inside the oil cavity 42. Several round holes are opened on the outer wall of the round tubes 43. The outer wall of the round tubes 43 abuts against the outer wall of the sponge block 44. The oil supply pipe 49 provides a convenient channel for replenishing the lubricating medium in the oil cavity 42. The sealing plug 410 can effectively prevent the medium from leaking and external impurities from entering the oil cavity 42. The round tubes 43 guide the medium in the oil cavity 42 evenly to the sponge block 44 through the round holes on the outer wall, ensuring that the medium adsorbed by the sponge block 44 is evenly distributed, thereby making the thickness of the protective oil film formed on the surface of the piston rod 2 uniform, significantly improving the stability of the anti-rust effect. The rotating ring 45 also provides a reliable structural basis for subsequent oil supply adjustment.

[0026] like Figure 3 As shown, an oil-pushing plate 46 is fixedly connected to the inner wall of the rotating ring 45. The outer wall of the oil-pushing plate 46 is in contact with the inner wall of the oil cavity 42 and the inner wall of the round tube 43. When the rotating ring 45 is rotated, the oil-pushing plate 46 can move synchronously inside the oil cavity 42. The oil-pushing plate 46 can squeeze the lubricating medium in the oil cavity 42, causing the medium to quickly penetrate through the round hole of the round tube 43 to the sponge block 44, accelerating the oil absorption speed of the sponge block 44. At the same time, it can avoid the problem of uneven oil supply caused by the deposition of medium inside the oil cavity 42, ensuring that the protective oil film can be continuously and stably replenished, and effectively improving the response efficiency of the anti-rust mechanism 4.

[0027] like Figure 2As shown, a threaded sleeve 47 is fixedly connected to one side of the collar 41, and a fastener 48 is fixedly connected to the outer wall of the top of the main rod 1. The inner wall of the fastener 48 is threadedly connected to the outer wall of the threaded sleeve 47. The threaded connection method makes the structure easy to disassemble and assemble, and facilitates maintenance. At the same time, it can ensure the firmness of the anti-rust mechanism 4 after installation. It will not loosen during the frequent lifting and lowering of the gas spring, and will not affect the stability and safety of the overall structure.

[0028] like Figure 5 As shown, the cleaning mechanism 5 includes a cleaning box 51 fixedly connected to the collar 41 on the side away from the main rod 1. A slide rail 53 is fixedly connected inside the cleaning box 51, and an annular brush 54 is slidably connected to the outer surface of the slide rail 53. The end of the annular brush 54 is in close contact with the outer wall of the piston rod 2. The slide rail 53 provides a stable sliding guide for the annular brush 54. The contact design between the annular brush 54 and the piston rod 2 can efficiently scrape off dust, sand and other impurities attached to the surface of the piston rod 2 when it reciprocates, preventing impurities from entering the sealing gap between the piston rod 2 and the main rod 1, preventing wear of the seal and contamination of the protective oil film, and providing a clean surface base for the subsequent formation of an effective protective oil film.

[0029] like Figure 4 As shown, a rubber arc-shaped scraper 52 is provided in the middle of one end of the cleaning box 51. The inner wall of the rubber arc-shaped scraper 52 maintains a micro-gap with the outer wall of the piston rod 2. The rubber arc-shaped scraper 52 can scrape off larger particles of impurities and excess deposits on the surface of the piston rod 2 in advance when the piston rod 2 moves. The micro-gap design not only ensures the scraping effect, but also avoids direct hard contact between the rubber arc-shaped scraper 52 and the piston rod 2, which would cause wear on both. At the same time, it avoids the rubber arc-shaped scraper 52 scraping out an oil film. Combined with the subsequent cleaning action of the annular brush 54, a graded cleaning effect is formed, which further improves the cleanliness of the piston rod 2 surface.

[0030] like Figure 4 As shown, a sanding roller 55 is rotatably connected inside the cleaning box 51. A bevel gear set 56 is provided at the end of the sanding roller 55. A take-up post 57 is fixedly connected inside the cleaning box 51. The outer wall of the take-up post 57 and the outer wall of the sanding roller 55 are respectively fixedly connected to the middle of the two gears of the bevel gear set 56. A traction rope 58 is wound around the outer wall of the annular brush 54. One end of the traction rope 58 is fixedly connected to the outer wall of the take-up post 57. When the piston rod 2 reciprocates, it will drive the sanding roller 55 to rotate. Through the transmission action of the bevel gear set 56, the take-up post 57 will rotate synchronously. The take-up post 57 pulls the annular brush 54 along the slide rail 53 through the traction rope 58, which significantly enhances the wiping effect of the annular brush 54 on the surface of the piston rod 2, effectively removes stubborn attached impurities, improves the thoroughness of cleaning, and ensures that the protective oil film can adhere tightly to the surface of the piston rod 2.

[0031] like Figure 5As shown, a coil spring 59 is fixedly connected to the outer wall of the slide rail 53. One end of the coil spring 59 is fixedly connected to the outer wall of the annular brush 54. When the take-up column 57 releases the traction rope 58, the elastic restoring force of the coil spring 59 can drive the annular brush 54 to move in the opposite direction along the slide rail 53, realizing the reciprocating cleaning action of the annular brush 54 without the need for additional power drive, making the cleaning process more continuous and efficient, continuously keeping the surface of the piston rod 2 clean, avoiding the residue of impurities caused by cleaning in one direction, and ensuring the formation effect of the subsequent protective oil film.

[0032] like Figure 4 As shown, a metal mesh 510 is provided in the middle of the cleaning box 51. The metal mesh 510 is located outside the annular brush 54. The metal mesh can facilitate the direct discharge of dust and other debris cleaned by the annular brush 54 into the cleaning box, avoiding dust residue.

[0033] like Figure 5 As shown, the inner wall of the annular brush 54 is funnel-shaped, and the side with the larger opening of the inner wall of the annular brush 54 faces the valve stem 3. The side with the larger opening facing the valve stem 3 can guide the dust that is cleaned, preventing the dust from falling into the gap between the coil spring 59 and the slide rail 53, and at the same time, it can prevent the dust from contaminating the sponge block 44 and other components.

[0034] The working principle of this invention is as follows: During use, the release action is controlled by the valve stem 3, and the piston rod 2 reciprocates along the main rod 1. The piston rod 2 first passes through the cleaning box 51 of the cleaning mechanism 5. The rubber arc-shaped scraper 52 at one end of the cleaning box 51 maintains a slight distance from the piston rod 2, first scraping away larger particles of impurities and excess attachments on the surface of the piston rod 2, ensuring the scraping effect while avoiding hard contact that could scratch the surface of the piston rod 2. Then, the piston rod 2 enters the annular brush 54. The inner wall of the annular brush 54 is funnel-shaped, and the side with the larger opening faces the valve stem 3 to effectively intercept impurities. At the same time, the reciprocating motion of the piston rod 2 drives the abrasive roller 55 inside the cleaning box 51 to rotate. The abrasive roller 55 drives the take-up column 57 to rotate synchronously through the transmission action of the bevel gear set 56. The take-up column 57 pulls the annular brush 54 along the slide rail 53 via the traction rope 58, significantly enhancing the wiping effect of the annular brush 54 on the surface of the piston rod 2 and efficiently removing stubborn adhering impurities. Meanwhile, the coil spring 59 on the outer wall of the slide rail 53 generates an elastic restoring force when the take-up column 57 releases the traction rope 58, causing the annular brush 54 to rotate in the opposite direction along the slide rail 53, achieving reciprocating cleaning of the annular brush 54 without the need for additional power. The cleaning process is continuous and efficient. The metal mesh 510 in the middle of the cleaning box 51 is located outside the annular brush 54, which not only prevents large particles of impurities from the external environment from entering the cleaning box 51, avoiding damage to the cleaning components, but also facilitates the discharge of dust generated during internal cleaning, preventing impurities from remaining. After being cleaned in stages by the cleaning mechanism 5, the piston rod... 2. Maintaining a clean surface provides a good foundation for the formation of a protective oil film. The clean piston rod 2 then passes through the collar 41 of the anti-rust mechanism 4. The collar 41 is threaded to the fixing piece 48 at the top of the main rod 1 via a threaded sleeve 47 on one side. This not only ensures a secure installation and stability during frequent lifting and lowering of the gas spring, but also facilitates later disassembly and maintenance. The oil chamber 42 inside the collar 41 stores the same lubricating medium as inside the gas spring. Several circular tubes 43 within the oil chamber 42 guide the lubricating medium evenly to the sponge block 44 through circular holes in the outer wall. Rotating the rotating ring 45 in the middle of the collar 41 moves the oil-pushing plate 46 on its inner wall within the oil chamber 42. The oil-pushing plate 46 compresses the lubricating medium, accelerating its penetration into the sponge block 44. To improve speed and prevent uneven oil supply caused by medium deposition, the sponge block 44 is tightly slidably connected to the outer wall of the piston rod 2, which can continuously form a uniform protective oil film on the surface of the piston rod 2 during reciprocating motion, effectively achieving anti-oxidation and anti-rust functions. At the same time, it avoids damage to the gas spring sealing structure caused by additional oil application. The oil supply pipe 49 provides a convenient channel for replenishing lubricating medium to the oil chamber 42. The top sealing plug 410 can prevent medium leakage and the entry of external impurities. During the entire working process, the cleaning mechanism 5 and the anti-rust mechanism 4 work together to protect the sealing structure of the piston rod 2 and the main rod 1, and continuously provide cleaning protection and oil film protection for the piston rod 2, which significantly improves the service life and operational stability of the self-releasing controllable lifting gas spring in harsh outdoor environments.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A self-releasing controllable lifting gas spring, comprising a main rod (1), characterized in that: A piston rod (2) is slidably connected to the top of the main rod (1). A valve rod (3) is provided on the top of the piston rod (2). A rust prevention mechanism (4) and a cleaning mechanism (5) are installed on the outside of the top of the main rod (1). The rust prevention mechanism (4) includes a collar (41). An oil cavity (42) is opened inside the collar (41). A sponge block (44) is provided inside the collar (41). The inner wall of the sponge block (44) is slidably connected to the outer wall of the piston rod (2).

2. The self-releasing controllable lifting gas spring according to claim 1, characterized in that: A rotating ring (45) is rotatably connected to the middle of the collar (41). An oil delivery pipe (49) that passes through the oil cavity (42) is fixedly connected to the middle of the rotating ring (45). A sealing plug (410) is inserted into the top of the oil delivery pipe (49). Several round tubes (43) are arranged inside the oil cavity (42). Several round holes that pass through the round tubes (43) are opened on the outer wall of the round tubes (43). The outer wall of the round tubes (43) abuts against the outer wall of the sponge block (44).

3. The self-releasing controllable lifting gas spring according to claim 2, characterized in that: The inner wall of the rotating ring (45) is fixedly connected to an oil pusher plate (46), and the outer wall of the oil pusher plate (46) is in contact with the inner wall of the oil cavity (42) and the inner wall of the round tube (43).

4. The self-releasing controllable lifting gas spring according to claim 1, characterized in that: A threaded sleeve (47) is fixedly connected to one side of the collar (41), and a fastener (48) is fixedly connected to the outer wall of the top of the main rod (1). The inner wall of the fastener (48) is threadedly connected to the outer wall of the threaded sleeve (47).

5. The self-releasing controllable lifting gas spring according to claim 1, characterized in that: The cleaning mechanism (5) includes a cleaning box (51) fixedly connected to the side of the collar (41) away from the main rod (1). The cleaning box (51) is fixedly connected to a slide rail (53). The outer surface of the slide rail (53) is slidably connected to an annular brush (54). The end of the annular brush (54) is in contact with the outer wall of the piston rod (2).

6. The self-releasing controllable lifting gas spring according to claim 5, characterized in that: A rubber arc-shaped scraper (52) is provided in the middle of one end of the cleaning box (51), and the inner wall of the rubber arc-shaped scraper (52) maintains a small gap with the outer wall of the piston rod (2).

7. A self-releasing controllable lifting gas spring according to claim 5, characterized in that: The cleaning box (51) is rotatably connected to a sanding roller (55), and a bevel gear set (56) is provided at the end of the sanding roller (55). A take-up post (57) is fixedly connected to the inside of the cleaning box (51). The outer wall of the take-up post (57) and the outer wall of the sanding roller (55) are respectively fixedly connected to the middle of the two gears of the bevel gear set (56). A traction rope (58) is wound around the outer wall of the annular brush (54), and one end of the traction rope (58) is fixedly connected to the outer wall of the take-up post (57).

8. A self-releasing controllable lifting gas spring according to claim 5, characterized in that: A coil spring (59) is fixedly connected to the outer wall of the slide rail (53), and one end of the coil spring (59) is fixedly connected to the outer wall of the annular brush (54).

9. A self-releasing controllable lifting gas spring according to claim 5, characterized in that: A metal mesh (510) is provided in the middle of the cleaning box (51), and the metal mesh (510) is located outside the annular brush (54).

10. A self-releasing controllable lifting gas spring according to claim 5, characterized in that: The inner wall of the annular brush (54) is funnel-shaped, and the side with the larger opening of the inner wall of the annular brush (54) faces the valve stem (3).

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