Nitrogen spring rust prevention device

Abstract

The utility model relates to the technical field of nitrogen spring rust prevention devices, in particular to a nitrogen spring rust prevention device which comprises a nitrogen spring shell and a piston rod connected to the nitrogen spring shell in a sliding mode, a limiting ring is detachably and fixedly connected to the nitrogen spring shell, a plurality of scraping plates are fixedly connected to the limiting ring, and the scraping plates are fixedly connected to the nitrogen spring shell. The lower side of each scraping plate is connected with an oil injection assembly matched with the piston rod to stretch out and draw back to conduct automatic oil injection operation on the surface of the piston rod, the outer side face of the nitrogen spring shell is detachably and fixedly connected with a limiting sleeve, a plurality of oil storage grooves are formed in the limiting sleeve, and an oil injection groove is formed in one side of each oil storage groove. And the limiting ring and the limiting sleeve are in a relatively fixed state. Through the technical scheme, the uniform coating effect on the outer side face of the piston rod is improved, unnecessary lubricating oil loss is reduced, and the use cost and the maintenance cost of the device are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen spring rust prevention devices, and specifically to a nitrogen spring rust prevention device. Background Art

[0002] The nitrogen return spring has the ability to perform tasks that are difficult to accomplish with conventional elastic components such as metal return springs, rubber and air cushions. It simplifies mold design and manufacturing, facilitates mold installation and adjustment, and extends the service life of the mold. However, after long-term use, the outer wall of the plunger in the nitrogen return spring is prone to rust, which may cause blockage during the sliding process. Therefore, the outer wall of the plunger of the nitrogen return spring needs to be regularly oiled.

[0003] In the prior art, a nitrogen spring rust prevention device with a publication number of "CN220581574U" includes a nitrogen spring, a side wall of the nitrogen spring is provided with an oil filling mechanism, the oil filling mechanism includes a mounting shell, the mounting shell is provided on the outside of the nitrogen spring, a transparent oil storage box is fixed to the inner wall of the mounting shell, an oil pipe is fixed to the inner wall of the transparent oil storage box, an oil pump is fixed to the top of the oil pipe, an oil filling tank is fixed to the top of the oil pump, and a control mechanism is provided at the bottom of the mounting shell.

[0004] The above technology performs oil filling operation through the oil filling mechanism. Specifically, the oil pump delivers the lubricating oil to the oil filling tank through the oil pipe, and the brush nozzle at the other end of the oil filling tank is responsible for applying the lubricating oil to the outer side of the nitrogen spring, thereby improving the lubrication and rust prevention effect of the nitrogen spring and realizing the automation and intelligence of the oil filling operation. However, there are still some technical problems: First, according to the instructions attached Figure 1 It can be seen that the brush nozzle cannot completely cover the entire outer surface of the nitrogen spring. Therefore, during rust removal operations, certain areas of the nitrogen spring cannot be coated with lubricating oil, which affects the uniformity of the coating effect. Secondly, the coating method of the brush nozzle depends on the softness of the bristles, and the lubricating oil is spread through the bending deformation of the bristles. However, since some bristles will quickly reset after bending and deformation, some lubricating oil will splash out from the bristles as the bristles reset. This not only increases the waste of lubricating oil, but may also have an adverse effect on the working environment around the nitrogen spring, reducing the practicality and efficiency of the overall system. Utility Model Content

[0005] The utility model provides a nitrogen spring rust prevention device, which improves the uniform coating effect on the outer side surface of the piston rod, reduces unnecessary lubricating oil loss, and reduces the use cost and maintenance cost of the device.

[0006] The technical solution of the utility model is as follows:

[0007] A nitrogen spring rust prevention device comprises a nitrogen spring housing and a piston rod slidably connected to the nitrogen spring housing;

[0008] A limit ring is detachably fixedly connected to the nitrogen spring housing, and a plurality of scrapers are fixedly connected to the limit ring. The lower side of each scraper is connected to an oil injection assembly that cooperates with the piston rod to automatically inject oil to the surface of the piston rod.

[0009] The outer side of the nitrogen spring housing is detachably fixedly connected to a limit sleeve, and a plurality of oil storage tanks are provided in the limit sleeve, and an oil filling tank is provided on one side of each oil storage tank;

[0010] The limiting ring and the limiting sleeve are in a relatively fixed state.

[0011] Furthermore, the oil injection assembly includes a receiving plate, the receiving plate abuts against the outer side of the piston rod, and a plurality of limiting ball columns are fixedly connected to the receiving plate, and each of the limiting ball columns is slidably connected to the lower side of the adjacent scraper plate;

[0012] A plurality of limit blocks are slidably connected to the receiving plate, each of the limit blocks is fixedly connected to a transmission column, and one end of each transmission column away from the limit block is fixedly connected to a piston plate, and each piston plate is tightly abutted against the inner wall of the oil storage tank.

[0013] Furthermore, a plurality of limiting grooves are provided on the receiving plate, and each limiting block abuts against an inner wall of the limiting groove on a side facing the receiving plate.

[0014] Furthermore, each of the piston plates is fixedly connected to a reset column, each of the reset columns is slidably connected to the limiting sleeve, and a reset ring is fixedly connected to the upper end of several reset columns, and the inner diameter of the reset ring is larger than the outer diameter of the piston rod;

[0015] The upper end of the piston rod is fixedly connected with a reset plate, and the outer diameter of the reset plate is larger than the inner diameter of the reset ring.

[0016] Furthermore, a transmission groove is provided on the lower side of the scraper plate, and the transmission groove is similar in shape to the limiting ball column.

[0017] Furthermore, an oil limiting groove is provided on a side of the scraper plate close to the piston rod, and the axis of each oil filling groove faces the adjacent oil limiting groove.

[0018] Furthermore, a plurality of oil filling holes are provided on the nitrogen spring housing, each of the oil filling holes is communicated with the oil storage tank, an end of each oil filling hole away from the oil storage tank is fixedly connected to an oil filling nozzle, and an oil filling nut is threadedly connected to the outer side of each oil filling nozzle.

[0019] Furthermore, a plurality of magnetic blocks are fixedly embedded on the limiting sleeve.

[0020] The beneficial effects of the utility model are:

[0021] The oil injection assembly operates in conjunction with the upward and downward movement of the piston rod, eliminating the need for electronic components and reducing the device's manufacturing and maintenance costs. As the piston rod moves upward, the oil injection assembly injects lubricant onto the outer surface of the piston rod, where it is squeezed into several scraper plates. Subsequently, as the piston rod returns downward, the piston rod and scraper plates move relative to each other, scraping away the lubricant and flowing upward as the plates move. Because lubricant is sticky, this scraping action carries the lubricant from the top of the scraper plates downward, evenly distributing it along each scraper plate and onto the outer surface of the piston rod, thus improving the uniformity of the coating. Furthermore, the amount of lubricant dispensed by the oil injection assembly automatically adjusts based on the smoothness of the piston rod's outer surface, preventing unnecessary oil waste, ensuring a clean environment around the device, and reducing operating costs. This approach allows the device to operate longer, extending its service life, increasing maintenance intervals, and ultimately reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 It is an enlarged schematic diagram of the prior art;

[0024] Figure 2 It is an enlarged schematic diagram of the utility model;

[0025] Figure 3 This is a partial enlarged diagram of the present invention Figure 1 ;

[0026] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0027] Figure 5 This is a partial enlarged diagram of the present invention Figure 2 ;

[0028] Figure 6 This is a partial enlarged diagram of the present invention Figure 3 ;

[0029] Figure 7 This is a partial enlarged diagram of the present invention Figure 4 .

[0030] In the figure: 11. Nitrogen spring housing; 12. Piston rod; 13. Limiting ring; 14. Scraper plate; 141. Transmission groove; 142. Oil limiting groove; 15. Limiting sleeve; 151. Magnetic block; 16. Oil storage tank; 17. Oil filling tank; 18. Oil filling hole; 19. Oil filling nozzle; 110. Oil filling nut; 21. Adapter plate; 22. Limiting ball column; 23. Limiting block; 24. Transmission column; 25. Piston plate; 26. Limiting groove; 27. Reset column; 28. Reset ring; 29. ​​Reset plate. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example

[0033] like Figures 2 to 7 As shown, this embodiment proposes a nitrogen spring rust prevention device, including a nitrogen spring housing 11 and a piston rod 12 slidably connected to the nitrogen spring housing 11;

[0034] The limiting ring 13 is detachably fixedly connected to the nitrogen spring housing 11. The limiting ring 13 can be fixedly connected by magnetic attraction, which is convenient for workers to remove and install. Several scrapers 14 are fixedly connected to the limiting ring 13. The oiling assembly that automatically injects oil to the surface of the piston rod 12 when the piston rod 12 is extended and retracted is connected to the lower side of the scraper 14.

[0035] The limiting sleeve 15 is detachably fixedly connected to the outer surface of the nitrogen spring housing 11. The limiting sleeve 15 can be fixedly connected by magnetic attraction, which is convenient for workers to remove and install. Several oil storage tanks 16 are opened in the limiting sleeve 15, and each oil filling tank 17 is opened in each oil storage tank 16;

[0036] The limiting ring 13 and the limiting sleeve 15 are in a relatively fixed state;

[0037] The oil filling assembly follows the up and down movement of the piston rod 12 to perform a linkage operation, does not require the cooperation of electronic components, and reduces the manufacturing cost and maintenance cost of the device. When the piston rod 12 moves upward, the lubricating oil injected into the outer side of the piston rod 12 by the oil filling assembly will be squeezed into the plurality of scraper plates 14. Then, when the piston rod 12 is reset downward, the piston rod 12 and the plurality of scraper plates 14 move relative to each other, and the lubricating oil on the piston rod 12 will be scraped upward by the scraper plates 14. The lubricating oil has adhesion, and this scraping action will carry the oil on the upper side of the scraper plates 14 to gradually flow downward, thereby allowing the lubricating oil to be evenly coated on the outer side of the piston rod 12 along the scraper plates 14, thereby improving the uniform coating effect on the outer side of the piston rod 12. In addition, the amount of lubricating oil injected by the oil filling assembly is automatically adjusted according to the smoothness of the outer surface of the piston rod 12, thereby reducing unnecessary lubricating oil loss, ensuring the environment around the device, and reducing the cost of use, so that the device can be used for a longer time, improving the service life, increasing the maintenance cycle, and reducing maintenance costs.

[0038] like Figure 3 and Figure 7 As shown, the oil filling assembly includes a receiving plate 21, which abuts against the outer side of the piston rod 12. A plurality of limiting ball columns 22 are fixedly connected to the receiving plate, and each limiting ball column 22 is slidably connected to the lower side of the adjacent scraper plate 14;

[0039] A plurality of limit blocks 23 are slidably connected to the receiving plate 21, each limit block 23 is fixedly connected to each transmission column 24, and one end of each transmission column 24 away from the limit block 23 is fixedly connected to each piston plate 25, and each piston plate 25 is tightly abutted against the inner wall of the oil storage tank 16;

[0040] The oil injection assembly operates in conjunction with the up and down movement of the piston rod 12, and does not require the cooperation of electronic components, thereby reducing the manufacturing cost and maintenance cost of the device.

[0041] like Figure 4 and Figures 6 and 7 As shown, a plurality of limiting grooves 26 are provided on the receiving plate 21 , and each limiting block 23 abuts against the inner wall of the limiting groove 26 on the side facing the receiving plate 21 ;

[0042] When the receiving plate 21 is rotated and raised, the transmission column 24 can move up and down smoothly.

[0043] like Figures 2 to 4 As shown, each piston plate 25 is fixedly connected to each reset column 27, each reset column 27 is slidably connected to the limiting sleeve 15, and the upper ends of several reset columns 27 are fixedly connected to the reset ring 28, and the inner diameter of the reset ring 28 is larger than the outer diameter of the piston rod 12;

[0044] The reset plate 29 is fixedly connected to the upper end of the piston rod 12, and the outer diameter of the reset plate 29 is larger than the inner diameter of the reset ring 28;

[0045] After the lubricating oil has adhered to the surface of the piston rod 12, as it moves up and down, the reset ring 28 will not interfere with the lubricating oil applied to this part, thereby ensuring the coating effect of the lubricating oil on the surface of the piston rod 12. Then, when the piston plate 25 cannot be reset after moving up, the piston rod 12 is completely reset, and the reset ring 28 will be squeezed downward through the reset plate 29, thereby driving the receiving plate 21 to reset, so that the receiving plate 21 can continue to be put into use next time.

[0046] like Figure 4 and Figures 6 and 7 As shown, the transmission groove 141 is provided on the lower side of the scraper plate 14 , and the transmission groove 141 is similar in appearance to the limiting ball column 22 ;

[0047] When the outer surface of the piston rod 12 is not smooth enough, the piston rod 12 moves upward, driving the receiving plate 21 to move upward synchronously. The receiving plate 21 is connected to the transmission groove 141 by the sliding connection between the limiting ball column 22 and the receiving plate 21, so that the receiving plate 21 moves upward and rotates with the piston rod 12 during the upward movement, until the receiving plate 21 slides to the highest position and stops. The piston rod 12 will continue to move upward, causing the receiving plate 21 to apply an upward squeezing force to the piston plate 25 through the several transmission columns 24, thereby squeezing the lubricating oil in the oil storage tank 16 to the outer surface of the piston rod 12 through the oil filling groove 17.

[0048] When only some areas of the surface of the piston rod 12 are not smooth, during the upward movement, only when these non-smooth areas come into contact with the limit ring 13, the limit ring 13 will rotate and rise accordingly, and the upward movement distance of the limit ring 13 is limited, thereby limiting the amount of lubricating oil squeezed out from the oil filling groove 17; the amount of lubricating oil injected corresponds to the lubrication of the outer surface of the piston rod 12: when the surface lubrication is insufficient, more lubricating oil will be squeezed out; when the surface lubrication is normal, only the corresponding amount of lubricating oil will be squeezed out; this method effectively reduces the waste of lubricating oil, and because it does not rely on electronic components, it reduces the manufacturing and maintenance costs of the equipment and realizes an automated lubrication coating process.

[0049] like Figures 3 to 7 As shown, the oil limiting groove 142 is opened on the side of the scraper plate 14 close to the piston rod 12, and the axis of each oil filling groove 17 is oriented toward the adjacent oil limiting groove 142;

[0050] When the lubricating oil is injected into the oil limiting groove 142 through the oil injection groove 17, this part of the lubricating oil will flow along the inner wall of the oil limiting groove 142 and will not overflow from the outside of the scraper plate 14, so that the excess lubricating oil will not affect the outside.

[0051] like Figures 3 and 4As shown, a plurality of oil filling holes 18 are provided on the nitrogen spring housing 11. Each oil filling hole 18 is communicated with the oil storage tank 16. An end of each oil filling hole 18 away from the oil storage tank 16 is fixedly connected to each oil filling nozzle 19. The outer side of each oil filling nozzle 19 is threadedly connected to each oil filling nut 110.

[0052] When the lubricating oil in the oil storage tank 16 is insufficient, the oil filling nut 110 can be loosened, and then new lubricating oil can be added into the oil storage tank 16 through the oil filling hole 18 .

[0053] like Figure 2 As shown, a number of magnetic blocks 151 are fixedly embedded in the limiting sleeve 15 , and can be quickly fixed and disassembled through the magnetic blocks 151 and the outer wall of the piston rod 12 , which facilitates workers to install and disassemble the limiting sleeve 15 .

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nitrogen spring anti-rust device, comprising a nitrogen spring housing (11) and a piston rod (12) slidingly connected to the nitrogen spring housing (11), characterized in that ； A limit ring (13) is detachably fixedly connected to the nitrogen spring housing (11), a plurality of scraper plates (14) are fixedly connected to the limit ring (13), and an oil injection assembly is connected to the lower side of each scraper plate (14) for automatically injecting oil into the surface of the piston rod (12) in cooperation with the piston rod (12) to extend and retract; The outer side of the nitrogen spring housing (11) is detachably fixedly connected to a limiting sleeve (15), wherein a plurality of oil storage grooves (16) are provided in the limiting sleeve (15), and an oil filling groove (17) is provided on one side of each of the oil storage grooves (16); The limiting ring (13) and the limiting sleeve (15) are in a relatively fixed state.

2. The nitrogen spring anti-rust device according to claim 1, characterized in that: The oil injection assembly includes a receiving plate (21), the receiving plate (21) abuts against the outer side surface of the piston rod (12), and a plurality of limiting ball columns (22) are fixedly connected to the receiving plate, and each of the limiting ball columns (22) is slidably connected to the lower side surface of the adjacent scraper plate (14); A plurality of limit blocks (23) are slidably connected to the receiving plate (21), each of the limit blocks (23) is fixedly connected to a transmission column (24), and one end of each transmission column (24) away from the limit block (23) is fixedly connected to a piston plate (25), and each of the piston plates (25) is in close contact with the inner wall of the oil storage tank (16).

3. The nitrogen spring anti-rust device according to claim 2, characterized in that: A plurality of limiting grooves (26) are provided on the receiving plate (21), and each limiting block (23) abuts against the inner wall of the limiting groove (26) on the side facing the receiving plate (21).

4. The nitrogen spring anti-rust device according to claim 2, characterized in that: Each of the piston plates (25) is fixedly connected with a reset column (27), and each of the reset columns (27) is slidably connected to the limiting sleeve (15). The upper ends of the reset columns (27) are fixedly connected with a reset ring (28), and the inner diameter of the reset ring (28) is larger than the outer diameter of the piston rod (12); The upper end of the piston rod (12) is fixedly connected with a reset plate (29), and the outer diameter of the reset plate (29) is larger than the inner diameter of the reset ring (28).

5. The nitrogen spring anti-rust device according to claim 2, characterized in that: A transmission groove (141) is provided on the lower side of the scraper plate (14), and the transmission groove (141) is similar in appearance to the limiting ball column (22).

6. The nitrogen spring anti-rust device according to claim 1, characterized in that: An oil limiting groove (142) is provided on one side of the scraper plate (14) close to the piston rod (12), and the axis of each oil filling groove (17) faces the adjacent oil limiting groove (142).

7. The nitrogen spring anti-rust device according to claim 1, characterized in that: The nitrogen spring housing (11) is provided with a plurality of oil filling holes (18), each of which is in communication with the oil storage tank (16). An end of each oil filling hole (18) away from the oil storage tank (16) is fixedly connected to an oil filling nozzle (19), and an outer side of each oil filling nozzle (19) is threadedly connected to an oil filling nut (110).

8. The nitrogen spring anti-rust device according to claim 1, characterized in that: A plurality of magnetic blocks (151) are fixedly embedded on the limiting sleeve (15).

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