Vacuum assembly device for shock absorber body

Abstract

The utility model discloses a shock absorber main part vacuum assembly device, the middle part of vertical board is provided with support seat, the middle part of support seat is provided with sleeve, the upper portion sealed coupling of sleeve has the oil filler, the upper portion of oil filler is provided with the movable first limit axle, the lower portion of oil filler is provided with the movable second limit axle, and the middle part of oil filler is sequentially penetrated from below to above and is provided with the gas injection hole, the air extraction hole, the oil injection hole, the utility model is provided with independent oil storage tank, and the original micro - bubble of oil liquid can be extracted in cooperation vacuum, improves the quality of shock absorber assembly, improves the performance of shock absorber, and the device still completes through the integration of oil injection and gas injection into one procedure, improves the assembly efficiency, and can reduce the cost of manpower.

Description

Technical Field

[0001] This utility model relates to the field of assembly device technology, specifically a vacuum assembly device for a shock absorber body. Background Technology

[0002] A monotube shock absorber is a high-performance hydraulic damping device that works through a unique gas-liquid coupling damping principle. Due to its excellent response and heat dissipation performance, it is commonly used in scenarios with high handling requirements. It generally consists of a shock absorber body, inside which is a floating piston with nitrogen filling the space between the floating piston and the bottom of the shock absorber body. Inside the shock absorber body is a perforated shock-absorbing piston, and a guide that serves as the piston rod is mounted on top of the shock absorber body. The space between the floating piston and the guide is filled with damping oil, and the shock-absorbing piston moves up and down in the oil to provide a damping effect.

[0003] Currently, the piston assembly process for shock absorbers typically involves vacuuming followed by oil injection. However, micro-air bubbles present in the oil can still enter the shock absorber body, leading to a decrease in shock absorber performance. Furthermore, in the existing vacuum assembly process for shock absorbers, nitrogen filling and oil filling are usually completed in two separate steps, resulting in reduced assembly efficiency and increased labor costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a vacuum assembly device for the main body of a shock absorber, which addresses the shortcomings of the existing technology and solves at least one of the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A vacuum assembly device for a shock absorber body includes a vertical plate, a support base is provided in the middle of the vertical plate, a sleeve is provided in the middle of the support base, an oil injection cylinder is sealed and connected to the upper part of the sleeve, a movable first limiting shaft is provided in the upper part of the oil injection cylinder, a movable second limiting shaft is provided in the lower part of the oil injection cylinder, an air injection hole, an air extraction hole, and an oil injection hole are sequentially provided through the middle of the oil injection cylinder from bottom to top, and an air injection valve is provided on the outer side of the oil injection cylinder. Furthermore, the air injection valve is connected to the air injection hole, a first vacuum valve is provided on the outside of the oil injection cylinder and the first vacuum valve is connected to the air extraction hole, an oil injection valve is provided on the outside of the oil injection cylinder and the oil injection valve is connected to the oil injection hole, the oil injection valve is connected to an oil storage tank through a pipe, the oil storage tank is fixed to the upper part of the upright plate by a bracket, an oil filling pipe is provided on the top of the oil storage tank, a sealing cap is provided at the end of the oil filling pipe, a second vacuum valve and a pressure relief valve are provided on the side of the oil filling pipe, and a movable clamping device is provided below the support base.

[0006] Specifically, the upper part of the oil filling cylinder is provided with a through first limiting shaft hole, and a first limiting cylinder is provided through a first cylinder seat corresponding to the first limiting shaft hole. The first limiting cylinder is driven by a first limiting shaft, and the first limiting shaft and the first limiting shaft hole are slidably sealed together. The lower part of the oil filling cylinder is provided with a through second limiting shaft hole, and a second limiting cylinder is provided through a second cylinder seat corresponding to the second limiting shaft hole. The second limiting cylinder is driven by a second limiting shaft, and the second limiting shaft and the first limiting shaft hole are slidably sealed together.

[0007] Specifically, the end faces of the first and second limiting shafts are both provided with arc-shaped structures that mate with the inner wall of the oil injection cylinder.

[0008] Specifically, the clamping device includes a vertical guide rail provided at the lower part of the upright plate, a slide block slidably connected to the guide rail, a motor provided at the bottom of the upright plate, a lead screw driven by the motor, a ball screw seat provided on the slide block, the lead screw and the ball screw seat being drivenly connected, a fixed block provided on one side of the slide block, a third cylinder seat provided on the other side of the slide block, a clamping cylinder provided on the third cylinder seat, a movable block driven by the clamping cylinder, and the movable block being correspondingly arranged with the fixed block.

[0009] Specifically, the fixed block and the movable block are provided with corresponding semi-circular grooves in their middle parts.

[0010] Specifically, the lower part of the sleeve mates with the main body of the shock absorber.

[0011] Specifically, the oil storage tank is made of a transparent material.

[0012] Specifically, a base is provided at the bottom of the upright plate.

[0013] The beneficial effects of this utility model are: This invention features an independent oil storage tank, which, when combined with vacuuming, removes the micro-bubbles from the oil, improving the quality of shock absorber assembly and enhancing its performance. Furthermore, by integrating oil injection and air injection into a single process, this device increases assembly efficiency and reduces labor costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the oil injection cylinder part of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Vertical plate; 2. Base; 3. Support seat; 4. Sleeve; 5. Oil injection cylinder; 51. First limiting shaft hole; 52. Second limiting shaft hole; 53. Air injection hole; 54. Air extraction hole; 55. Oil injection hole; 6. First limiting cylinder; 61. First cylinder seat; 62. First limiting shaft; 7. Second limiting cylinder; 71. Second limiting shaft; 73. Air injection valve; 8. First vacuum valve; 9. Oil injection valve; 10. Oil storage tank; 11. Bracket; 12. Oil filling pipe; 13. Sealing cap; 14. Second vacuum valve; 15. Pressure relief valve; 16. Guide rail; 17. Slide seat; 18. Motor; 19. Lead screw; 20. Fixing block; 21. Third cylinder seat; 22. Clamping cylinder; 23. Movable block; 24. Shock absorber body; 25. Floating piston; 26. Shock absorber piston; 27. Piston rod; 28. Guide; 29. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: See Figures 1 to 2This is a schematic diagram of the various structures of this utility model, including a vertical plate 1, a support base 3 in the middle of the vertical plate 1, a sleeve 4 in the middle of the support base 3, an oil injection cylinder 5 sealed to the upper part of the sleeve 4, a movable first limiting shaft 62 in the upper part of the oil injection cylinder 5, a movable second limiting shaft 73 in the lower part of the oil injection cylinder 5, an air injection hole 53, an air extraction hole 54, and an oil injection hole 55 sequentially arranged from bottom to top in the middle of the oil injection cylinder 5, an air injection valve 8 arranged on the outside of the oil injection cylinder 5 and communicating with the air injection hole 53, the air injection valve 8 communicating with a nitrogen injection device and equipped with an air metering pump, through which nitrogen is meteredly injected, and a second limiting shaft 73 arranged on the outside of the oil injection cylinder 5. A vacuum valve 9 is provided, and the first vacuum valve 9 is connected to the air extraction port 54. The first vacuum valve 9 is connected to the vacuum pump. An oil injection valve 10 is provided on the outside of the oil injection cylinder 5, and the oil injection valve 10 is connected to the oil injection port 55. The oil injection valve 10 is connected to the oil storage tank 11 through a pipe. The oil storage tank 11 is fixed to the upper part of the upright plate 1 by the bracket 12. The top of the oil storage tank 11 is provided with a filling pipe 13. The end of the filling pipe 13 is provided with a sealing cap 14. Oil is added through the filling pipe 13. A second vacuum valve 15 and a pressure relief valve 16 are provided on the side of the filling pipe 13. The second vacuum valve 15 is connected to the vacuum pump. A movable clamping device is provided below the support base 3 to clamp the shock absorber body 25.

[0025] Furthermore, the upper part of the oil filling cylinder 5 is provided with a through first limiting shaft hole 51, and a first limiting cylinder 6 is provided through the first cylinder seat 61 corresponding to the first limiting shaft hole 51. The first limiting cylinder 6 is driven by a first limiting shaft 62, and the first limiting shaft 62 is slidably sealed to the first limiting shaft hole 51. The first limiting cylinder 6 drives the first limiting shaft 62 to extend or retract. The lower part of the oil filling cylinder 5 is provided with a through second limiting shaft hole 52, and a second limiting cylinder 7 is provided through the second cylinder seat 71 corresponding to the second limiting shaft hole 52. The second limiting cylinder 7 is driven by a second limiting shaft 73, and the second limiting shaft 73 is slidably sealed to the first limiting shaft hole 51. The second limiting cylinder 7 drives the second limiting shaft 73 to extend or retract.

[0026] Furthermore, the end faces of the first limiting shaft 62 and the second limiting shaft 73 are provided with arc-shaped structures that cooperate with the inner wall of the oil injection cylinder 5. The first limiting shaft 62 and the second limiting shaft 73 play a role in sealing and, after resetting, cooperate with the inner wall of the oil injection cylinder 5 to avoid the formation of cavities.

[0027] Furthermore, the clamping device includes a vertical guide rail 17 provided at the lower part of the upright plate 1, a slide block 18 slidably connected to the guide rail 17, a motor 19 provided at the bottom of the upright plate 1, a lead screw 20 driven by the motor 19, a ball screw nut provided on the slide block 18, the lead screw 20 being driven by the ball screw nut, the motor 19 driving the slide block 18 to move up and down, a fixed block 21 provided on one side of the slide block 18, a third cylinder seat 22 provided on the other side of the slide block 18, a clamping cylinder 23 provided on the third cylinder seat 22, a movable block 24 driven by the clamping cylinder 23, the movable block 24 being correspondingly provided with the fixed block 21, and the movable block 24 and the fixed block 21 cooperating to clamp the shock absorber body 25.

[0028] Furthermore, the fixed block 21 and the movable block 24 are provided with corresponding semi-circular grooves in the middle. The semi-circular grooves cooperate with the shock absorber body 25 to facilitate the fixing of the shock absorber body 25. When the shock absorber body 25 is fixed on the slide 18, the upper part of the shock absorber body 25 is correspondingly arranged with the sleeve 4 to clamp the cylindrical shock absorber body 25.

[0029] Furthermore, the lower part of the sleeve 4 mates with the shock absorber body 25, and the upper end of the shock absorber body 25 is sealed to the lower end of the oil injection cylinder 5 by a tight fit.

[0030] Furthermore, the oil storage tank 11 is made of transparent material, making it easy to observe the amount of oil inside the oil storage tank 11.

[0031] Furthermore, a base 2 is provided at the bottom of the upright plate 1 to support the upright plate 1.

[0032] The working principle of this utility model: The shock absorber body 25 is clamped and fixed to the slide block 18 by the clamping cylinder 23. The motor 19 drives the slide block 18 to move upward, and the upper part of the shock absorber body 25 is inserted into the sleeve 4, so that the upper end of the shock absorber body 25 cooperates with the lower end of the oil injection cylinder 5 to achieve a seal. The first limit cylinder 6 drives the first limit shaft 62 to extend, and the floating piston 26 is placed into the oil injection cylinder 5. The diameter of the oil injection cylinder 5 is the same as the diameter of the shock absorber body 25. The floating piston 26 cooperates with the oil injection cylinder 5 to achieve a movable seal. The first limit shaft 62 limits the floating piston 26. The vacuum pump connected to the first vacuum valve 9 is started and... The first vacuum valve 9 is opened to evacuate the sealed cavity formed by the oil injection cylinder 5 and the shock absorber body 25. After evacuation, the first vacuum valve 9 is closed, the gas injection valve 8 is opened, nitrogen gas is injected in a measured amount, and then the gas injection valve 8 is closed. The second limit cylinder 7 drives the second limit shaft 73 to extend, and the first limit cylinder 6 drives the first limit shaft 62 to retract. The floating piston 26 moves downward under pressure and is limited by the second limit shaft 73. The inner cavity of the shock absorber body 25 is still not in a semi-vacuum state. The shock absorber piston 27 is placed into the oil injection cylinder 5. The first limit cylinder 6 drives the first limit shaft 62 to extend, and the first limit shaft 62 guides... When the limit switch 29 is engaged, fill the storage tank with oil exceeding the required amount. Open the oil filling valve 10 and the second vacuum valve 15, and start the vacuum pump connected to the second vacuum valve 15 to evacuate the oil filling cylinder 5. Simultaneously, oil from the storage tank 11 flows into the oil filling cylinder 5 until the cavity is full. Continue evacuating to remove micro-air bubbles from the oil. While evacuating, be careful to prevent the floating piston 26 from moving upwards under the vacuum. Stop evacuating after the floating piston 26 moves upwards, and open the pressure relief valve 16 to release pressure. To ensure that micro-air bubbles are fully removed from the oil, evacuation can be repeated multiple times. After the microbubbles in the liquid are fully extracted, the second vacuum valve 15 is closed, the pressure relief valve 16 is opened to release pressure, the oil injection valve 10 is closed, the first limit shaft 62 and the second limit shaft 73 retract, and the floating piston 26, guide 29, shock absorber piston 27 and piston rod 28 connected to shock absorber piston 27 move downward as a whole under pressure and enter the inner cavity of shock absorber body 25, completing the assembly of shock absorber body 25. The motor 19 drives the slide 18 to move downward, so that shock absorber body 25 is separated from the cylinder. The clamping cylinder 23 releases the movable block 24, and the operator removes the assembled shock absorber body 25.

[0033] The amount of nitrogen filling is the amount used for assembling the shock absorber body 25, and the amount of oil injection is the amount used for assembling the shock absorber body 25. Therefore, the guide 29, the shock absorber piston 27, and the piston rod 28 connected to the shock absorber piston 27 can move downward as a whole and enter the inner cavity of the shock absorber body 25 under the action of pressure.

[0034] During vacuuming and oil injection, oil enters the air injection port 53 and the air extraction port 54. Before the next assembly, the oil remaining in the air injection port 53 and the air extraction port 55 is cleaned. A vacuum pump capable of extracting liquid is used to assist in extracting the oil remaining in the air extraction port 54. The oil remaining in the air injection port 53 is blown out by a metered air pump.

[0035] This utility model is equipped with an independent oil storage tank 11, which, in conjunction with vacuuming, can extract the original micro air bubbles in the oil, thereby improving the quality of shock absorber assembly and the performance of the shock absorber. This device also improves assembly efficiency and reduces labor costs by integrating oil injection and air injection into one process.

[0036] The above are merely optional embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A vacuum assembly device for a shock absorber body, characterized in that: The system includes a vertical plate (1), a support base (3) in the middle of the vertical plate (1), a sleeve (4) in the middle of the support base (3), an oil injection cylinder (5) sealed to the upper part of the sleeve (4), a movable first limiting shaft (62) in the upper part of the oil injection cylinder (5), a movable second limiting shaft (73) in the lower part of the oil injection cylinder (5), an air injection hole (53), an air extraction hole (54), and an oil injection hole (55) sequentially arranged from bottom to top in the middle of the oil injection cylinder (5), an air injection valve (8) in the outer side of the oil injection cylinder (5) and the air injection valve (8) communicating with the air injection hole (53), and an oil injection hole (55) in the outer side of the oil injection cylinder (5). The first vacuum valve (9) is connected to the air extraction hole (54). An oil injection valve (10) is provided on the outside of the oil injection cylinder (5) and is connected to the oil injection hole (55). The oil injection valve (10) is connected to the oil storage tank (11) through a pipe. The oil storage tank (11) is fixed on the upper part of the upright plate (1) by a bracket (12). A refueling pipe (13) is provided on the top of the oil storage tank (11). A sealing cap (14) is provided at the end of the refueling pipe (13). A second vacuum valve (15) and a pressure relief valve (16) are provided on the side of the refueling pipe (13). A movable clamping device is provided below the support base (3).

2. The vacuum assembly device for a shock absorber body according to claim 1, characterized in that: The upper part of the oil injection cylinder (5) is provided with a through first limiting shaft hole (51), and a first limiting cylinder (6) is provided through a first cylinder seat (61) corresponding to the first limiting shaft hole (51). The first limiting cylinder (6) is driven by a first limiting shaft (62), and the first limiting shaft (62) and the first limiting shaft hole (51) are slidably sealed together. The lower part of the oil injection cylinder (5) is provided with a through second limiting shaft hole (52), and a second limiting cylinder (7) is provided through a second cylinder seat (71) corresponding to the second limiting shaft hole (52). The second limiting cylinder (7) is driven by a second limiting shaft (73), and the second limiting shaft (73) and the first limiting shaft hole (51) are slidably sealed together.

3. The vacuum assembly device for a shock absorber body according to claim 2, characterized in that: The end faces of the first limiting shaft (62) and the second limiting shaft (73) are provided with arc-shaped structures that cooperate with the inner wall of the oil injection cylinder (5). The first limiting shaft (62) and the second limiting shaft (73) play a role in sealing and cooperate with the inner wall of the oil injection cylinder (5) after resetting to avoid the formation of cavities.

4. The vacuum assembly device for a shock absorber body according to claim 1, characterized in that: The clamping device includes a vertical guide rail (17) provided at the lower part of the upright plate (1), the guide rail (17) is slidably connected to a slide (18), a motor (19) is provided at the bottom of the upright plate (1), the motor (19) is driven to a lead screw (20), the slide (18) is provided with a ball screw seat, the lead screw (20) is driven to the ball screw seat, a fixed block (21) is provided on one side of the slide (18), a third cylinder seat (22) is provided on the other side of the slide (18), a clamping cylinder (23) is provided on the third cylinder seat (22), the clamping cylinder (23) is driven to a movable block (24), and the movable block (24) is correspondingly provided to the fixed block (21).

5. The vacuum assembly device for a shock absorber body according to claim 4, characterized in that: The fixed block (21) and the movable block (24) are provided with corresponding semi-circular grooves in the middle. The semi-circular grooves cooperate with the shock absorber body (25) to facilitate the fixing of the shock absorber body (25). When the shock absorber body (25) is fixed on the slide (18), the upper part of the shock absorber body (25) is correspondingly set with the sleeve (4).

6. The vacuum assembly device for a shock absorber body according to claim 1, characterized in that: The lower part of the sleeve (4) is fitted with the shock absorber body (25), and the upper end of the shock absorber body (25) is sealed to the lower end of the oil injection cylinder (5) by a tight fit.

7. The vacuum assembly device for a shock absorber body according to claim 1, characterized in that: The oil storage tank (11) is made of transparent material.

8. The vacuum assembly device for a shock absorber body according to claim 1, characterized in that: The bottom of the upright plate (1) is provided with a base (2).

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