Jacking type damping spring mechanism

Abstract

The utility model discloses a jacking type damping spring mechanism, which belongs to the technical field of damping mechanisms, and comprises an outer cylinder, a sealing assembly is arranged along the inner circumference of the outer cylinder, and damping grease is arranged in the sealing assembly; a piston assembly is slidably arranged on the inner side wall of the sealing assembly in a penetrating mode. An elastic element is arranged in the piston assembly; a cover plate is arranged at the bottom of the outer cylinder, one end of the elastic element abuts against the top of the piston assembly, and the other end of the elastic element abuts against the inner wall of the cover plate. And the damping grease is mixed with the thickener. According to the mechanism, the elastic element is combined with the damping grease to achieve damping motion, different thickening agents are mixed in the damping grease, the damping performance of the damping grease is greatly improved, the damping effect of the elastic element can be adjusted by changing the viscosity of the damping grease in the working process of the elastic element, high-frequency resonance is eliminated, and the damping effect of the elastic element is improved. And the use requirements of elastic self-recovery of the damping property and the speed requirement for elastic force release are met.

Description

Technical Field

[0001] This utility model relates to the field of damping mechanism technology, specifically to a lifting damping spring mechanism. Background Technology

[0002] With the significant improvement of modern industrial levels, various equipment has increasingly demanded personalized elastic elements. Some mechanisms need to utilize the rapid rebound energy of elastic elements, some mechanisms need to utilize the thrust performance of elastic elements as constant as possible, some mechanisms need to utilize the energy storage function of elastic elements, some mechanisms need to utilize the shock absorption function of elastic elements, and some mechanisms need the elastic elements to exhibit damping motion in order to fulfill a specific functional requirement.

[0003] In related technologies, among the elastic elements currently in use, steel wire springs or rubber springs have a high rebound coefficient, which easily leads to high-frequency resonance, causing the spring to crack or break. While gas springs or hydraulic springs can achieve damped motion, the damping force is not adjustable, which cannot meet the requirements of damping elastic self-recovery and the speed requirement of elastic force release. In addition, the pressure of the gas and liquid inside them is very high, which can easily cause damage to the spring.

[0004] Therefore, there is an urgent need for a lifting damping spring mechanism to eliminate the resonance effect during the operation of the elastic element, and the damping force is adjustable to meet the requirements of damping elastic self-recovery and speed requirements for elastic force release. Utility Model Content

[0005] The purpose of this invention is to provide a lifting damping spring mechanism to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lifting damping spring mechanism, comprising:

[0008] An outer cylinder is provided with a sealing assembly along its inner circumference, and damping grease is provided inside the sealing assembly.

[0009] The piston assembly is slidably inserted through the inner wall of the sealing assembly;

[0010] The piston assembly is provided with an elastic element;

[0011] The bottom of the outer cylinder is provided with a cover plate, one end of the elastic element abuts against the top of the piston assembly, and the other end of the elastic element abuts against the inner wall of the cover plate;

[0012] The damping grease is mixed with a thickener.

[0013] The lifting damping spring mechanism according to this scheme has at least the following technical advantages:

[0014] The viscous flow of damping grease is a passive force with no rebound. When two objects connected by the damping grease have no relative motion, the damping force is "0". Damping force is only generated when there is relative motion between the two objects, until the two objects are relatively stationary. At this point, the objects are in a new static equilibrium, and the damping force is "0". When the elastic element is in a steady state, the piston assembly is in an extended state due to the thrust of the elastic element. When the piston assembly undergoes compression due to external pressure, the speed of compression is significantly slowed down by the viscosity of the damping grease. When the external pressure decreases or is removed, the piston assembly slowly rises under the combined action of the elastic element and the damping grease until the piston assembly is once again in an extended state due to the thrust of the elastic element.

[0015] This lifting damping spring mechanism utilizes an elastic element combined with damping grease to achieve damping motion. By mixing different viscosity modifiers into the damping grease, the damping performance of the grease can be significantly improved without changing the magnitude of the force exerted by the elastic element on the external environment. It only reduces the speed at which the force changes. During operation, the damping effect of the elastic element can be adjusted by changing the viscosity of the damping grease, thereby eliminating high-frequency resonance and meeting the requirements of elastic self-recovery and speed-dependent release of the spring force. Compared to traditional gas springs or hydraulic springs, this damping spring mechanism does not need to withstand high pressure from gas or liquid, greatly reducing manufacturing difficulty and making it less prone to damage, thus increasing its service life. At the same time, the mechanism has a simple structure, low cost, and is easy to maintain.

[0016] As a further embodiment of this utility model: the sealing assembly includes an upper sealing groove, a damping cavity, a lower sealing groove, and a stroke cavity that are connected sequentially from top to bottom along the inner wall of the outer cylinder.

[0017] As a further improvement of this utility model, an oil filling port is provided on one side of the damping cavity.

[0018] The sealing assembly includes an upper sealing groove, a damping cavity, a lower sealing groove, and a stroke cavity that are sequentially connected from top to bottom within the outer cylinder. An oil inlet is provided on one side of the damping cavity to allow damping grease or viscous agent to be injected into it. Furthermore, the height of the stroke cavity is greater than the working height of the piston assembly, providing sufficient safety space for the piston assembly's movement. This effectively prevents the piston assembly from colliding with the stroke cavity wall during movement, thereby reducing the risk of equipment damage and extending the service life of the mechanism. Simultaneously, the piston assembly has more adjustable space during movement. Depending on different working requirements, the performance of the mechanism can be changed by adjusting the stroke of the piston assembly, enabling more flexible adjustment of the piston assembly and improving the adaptability and working efficiency of the mechanism.

[0019] As a further improvement of this utility model, a plug is provided inside the oil filling port.

[0020] Because a plug is installed inside the oil inlet, leakage or evaporation of damping grease or thickener can be effectively prevented, avoiding changes in the quantity and viscosity of the damping grease or thickener, which could lead to unstable damping effects and prevent the mechanism from achieving the expected shock absorption, buffering, or precise speed control. At the same time, it can prevent dust, moisture, and other impurities from entering the damping cavity, contaminating the damping grease or thickener, affecting its performance, and ensuring the cleanliness of the damping cavity, thereby guaranteeing the performance of the damping grease or thickener.

[0021] As a further embodiment of this utility model: sealing rings are respectively provided around the inner sidewalls of the upper sealing groove and the lower sealing groove, and a damping surface is provided on the outer sidewall of the piston assembly, and the damping surface is slidably connected to the inner sidewall of the sealing ring.

[0022] Because sealing rings are provided around the inner walls of the upper and lower sealing grooves respectively, and a damping surface is provided on the outer wall of the piston assembly, the damping surface is slidably connected to the inner wall of the sealing ring. When the piston assembly slides relative to the sealing ring, the sealing ring can effectively prevent the damping grease or viscous agent in the damping cavity from leaking into the external environment. At the same time, it can also prevent external dust, moisture and other impurities from entering the damping cavity, effectively improving the sealing performance of the sealing assembly and ensuring the stability of the use of the damping grease or viscous agent.

[0023] As a further embodiment of this invention, the surface roughness of the damping surface is Ra1.6μm-Ra12.5μm.

[0024] The surface roughness of the damping surface, Ra1.6μm-Ra12.5μm, can balance the flowability and adhesion of damping grease or viscous, preventing excessive flow of damping grease or viscous. This roughness also gives the damping surface a certain micro-uneven structure, which can increase the actual contact area between the damping surface and the sealing ring. During the sealing process, the damping grease or viscous fills the spaces between these micro-uneven structures, forming multiple sealing barriers, effectively preventing leakage of damping grease or viscous and improving the reliability of the seal.

[0025] As a further embodiment of this utility model: a spring guide sleeve is provided inside the piston assembly, and the elastic element is disposed inside the spring guide sleeve.

[0026] By setting a spring guide sleeve inside the piston assembly, the elastic element is placed inside the spring guide sleeve. The spring guide sleeve provides a stable support and guiding structure for the elastic element, which can constrain the deformation direction of the elastic element, allowing the elastic element to expand and contract along a predetermined axis, avoiding lateral bending or twisting of the elastic element when subjected to force, and ensuring the stability of the elastic performance of the elastic element.

[0027] As a further embodiment of this invention, the diameter of the spring guide sleeve is larger than the diameter of the elastic element after compression and deformation.

[0028] When an elastic element is compressed axially, it will deform radially. To prevent the radial deformation of the elastic element after compression from interfering with the spring guide sleeve, the diameter of the spring guide sleeve is set to be larger than the diameter of the elastic element after compression. This allows the elastic element to rebound smoothly after compression, avoiding contact or friction between the radial deformation of the elastic element after compression and the inner wall of the spring guide sleeve, which would affect the rebound force of the elastic element and ensure the elastic performance of the elastic element.

[0029] As a further embodiment of this utility model: a first positioning platform is provided on the top inner side of the piston assembly, a second positioning platform is provided on the inner wall of the cover plate, the top of the elastic element is connected to the first positioning platform, and the bottom of the elastic element is connected to the second positioning platform.

[0030] By setting a first positioning platform on the top inner side of the piston assembly and a second positioning platform on the inner wall of the cover plate, with the top of the elastic element connected to the first positioning platform and the bottom of the elastic element connected to the second positioning platform, the radial movement of the elastic element within the piston assembly can be effectively restricted. This ensures that the elastic element can extend and retract along the accurate axial direction during each compression and rebound process, preventing the elastic element from twisting or bending during axial extension and retraction due to radial offset. This improves the consistency of the elastic output of the elastic element, thereby enhancing the operational stability and accuracy of the piston assembly.

[0031] As a further embodiment of this utility model: a lifting platform is provided at the bottom of the piston assembly, and the lifting platform abuts against the inner wall of the outer cylinder.

[0032] Because the piston assembly has a lifting platform at the bottom circumference, which abuts against the inner wall of the outer cylinder, it can effectively limit the maximum stroke of the piston assembly after compression and rebound, ensuring that the piston assembly moves within a reasonable stroke range. This prevents the piston assembly from having an excessive stroke due to the elastic rebound of the elastic element, which could lead to loose connections, seal failure, or other issues, and ensures stable output of damping force.

[0033] As a further embodiment of this utility model: the bottom of the outer cylinder is provided with a plurality of latches, and the cover plate is provided with a plurality of latch grooves corresponding to the plurality of latches.

[0034] By setting several latches at the bottom of the outer cylinder and corresponding latch grooves on the cover plate, the cover plate can be effectively connected to the bottom of the outer cylinder, improving the connection stability between the outer cylinder and the cover plate. This ensures that the two ends of the elastic element will not loosen or detach when subjected to vibration or impact, thus ensuring the stability and reliability of the elastic element. At the same time, the outer cylinder and the cover plate are easy to install and disassemble without complicated installation steps, improving installation efficiency. Attached Figure Description

[0035] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of the front sectional view of a lifting damping spring mechanism;

[0037] Figure 2 A schematic cross-sectional view of the outer cylinder of a lifting damping spring mechanism;

[0038] Figure 3 A schematic diagram of a piston assembly structure for a lifting damping spring mechanism;

[0039] Figure 4 This is a schematic diagram of a cover plate structure for a lifting damping spring mechanism.

[0040] Figure label:

[0041] 1. Outer cylinder; 11. Tongue; 2. Sealing assembly; 21. Upper sealing groove; 22. Damping chamber; 221. Oil inlet; 222. Plug; 23. Lower sealing groove; 24. Stroke chamber; 3. Damping grease; 4. Piston assembly; 41. Damping surface; 42. Spring guide sleeve; 43. First positioning platform; 44. Lifting platform; 5. Elastic element; 6. Cover plate; 61. Second positioning platform; 62. Tongue groove; 7. Sealing ring. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. 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.

[0044] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] 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.

[0048] like Figure 1The embodiment of this utility model shows a lifting damping spring mechanism, comprising: an outer cylinder 1, a sealing assembly 2 provided along the inner circumference of the outer cylinder 1, and damping grease 3 disposed inside the sealing assembly 2; a piston assembly 4 slidably passing through the inner sidewall of the sealing assembly 2; an elastic element 5 disposed inside the piston assembly 4; a cover plate 6 provided at the bottom of the outer cylinder 1, one end of the elastic element 5 abutting against the top of the piston assembly 4, and the other end of the elastic element 5 abutting against the inner wall of the cover plate 6; the damping grease 3 is mixed with a viscous agent.

[0049] Specifically, the viscous flow of damping grease 3 is a passive force with no rebound. When two objects connected by damping grease 3 have no relative motion, the damping force is "0". Only when there is relative motion between the two objects will a damping force be generated until the two objects are relatively stationary. At this time, the objects are in a new static equilibrium, and the damping force is "0". When the elastic element 5 is in a stable state, the piston assembly 4 is in an extended state due to the thrust of the elastic element 5. When the piston assembly 4 undergoes compression due to external pressure, the speed of compression is significantly slowed down due to the viscosity of the damping grease 3. When the external pressure decreases or is removed, the piston assembly 4 slowly rises under the combined action of the elastic element 5 and the damping grease 3 until the piston assembly 4 is once again in an extended state due to the thrust of the elastic element 5.

[0050] This lifting damping spring mechanism utilizes an elastic element 5 combined with damping grease 3 to achieve damping motion. By mixing different viscosity modifiers into the damping grease 3, the damping performance of the grease 3 can be significantly improved without changing the magnitude of the force exerted by the elastic element 5 on the external environment. It only reduces the speed at which the force of the elastic element 5 changes. During operation, the damping effect of the elastic element 5 can be adjusted by changing the viscosity of the damping grease 3, thereby eliminating high-frequency resonance and meeting the requirements of elastic self-recovery and speed-dependent release of the spring force. Compared with traditional gas springs or hydraulic springs, this damping spring mechanism does not need to withstand high pressure from gas or liquid, greatly reducing the difficulty of processing and making it less prone to damage, thus increasing its service life. At the same time, the mechanism has a simple structure, low cost, and is easy to maintain.

[0051] The following are examples of thickener mixing ratios and viscosity:

[0052] Adjustable liquid damping based on silicone oil;

[0053] Mixing ratio:

[0054] Dimethyl silicone oil serves as the basic carrier, accounting for 85%-92%.

[0055] Nano-silica is used as a thickener, accounting for 3%-8%.

[0056] Phenylated glycidyl ethers act as antioxidants, accounting for 1%-2%.

[0057] Molybdenum disulfide nanoparticles are used as an anti-wear agent, accounting for 2%-3%.

[0058] Graphene microflakes, as conductive particles, account for 1%-2%.

[0059] 85%–92% dimethyl silicone oil is used as the base carrier, with a viscosity range of 50 cSt–1000 cSt; 3%–8% nano-silica is used as a thickener, with a particle size range of 10 nm–50 nm; 1%–2% phenyl glycidyl ether is used as an antioxidant; 2%–3% molybdenum disulfide nanoparticles are used as an anti-wear agent; and 1%–2% graphene microflakes are used as conductive particles, with a particle size ≤5 μm.

[0060] Viscosity:

[0061] Dimethyl silicone oil has a viscosity range of 50 cSt-1000 cSt. The overall viscosity can be controlled by adjusting the viscosity of dimethyl silicone oil and the content of nano silica. Since nano silica is a thickener, increasing its content will increase the viscosity of the system. Moreover, the viscosity change rate of silicone oil-based media is ≤15% in the range of -40℃ to 150℃, and the viscosity is relatively stable in this temperature range. It is suitable for precision instruments.

[0062] Therefore, it can be seen that the adjustable liquid damping based on silicone oil uses dimethyl silicone oil as the main carrier and is combined with various additives. The viscosity can be flexibly controlled by adjusting the component ratio. Moreover, the viscosity change rate is low in the temperature range of -40℃ to 150℃, avoiding damping failure due to temperature rise. Furthermore, the composite effect of nanoparticles and conductive materials can suppress the cavitation effect and resonance peak of the liquid medium. The silica thickening network dynamically reorganizes under shear force, reducing the aging and delamination of the medium after long-term use. This damping medium is suitable for precision instruments.

[0063] like Figure 2 As shown, the sealing assembly 2 includes an upper sealing groove 21, a damping cavity 22, a lower sealing groove 23, and a stroke cavity 24 that are connected sequentially from top to bottom inside the outer cylinder 1; an oil filling port 221 is provided on one side of the damping cavity 22.

[0064] Specifically, the sealing assembly 2 includes an upper sealing groove 21, a damping cavity 22, a lower sealing groove 23, and a stroke cavity 24 that are sequentially connected from top to bottom inside the outer cylinder 1. An oil inlet 221 is provided on one side of the damping cavity 22 to allow damping grease 3 or a viscous agent to be injected into the damping cavity 22 through the oil inlet 221. Furthermore, the height of the stroke cavity 24 is greater than the working height of the piston assembly 4, providing sufficient safety space for the movement of the piston assembly 4. This effectively prevents the piston assembly 4 from colliding with the wall of the stroke cavity during movement, thereby reducing the risk of equipment damage and extending the service life of the mechanism. Simultaneously, the piston assembly 4 has more adjustable space during movement. According to different working requirements, the performance of the mechanism can be changed by adjusting the stroke of the piston assembly 4, achieving more flexible adjustment of the piston assembly 4 and improving the adaptability and working efficiency of the mechanism.

[0065] Furthermore, a plug 222 is provided inside the oil filling port 221.

[0066] Specifically, since the oil inlet 221 is equipped with a plug 222, it can effectively prevent the damping grease 3 or viscous agent from leaking or evaporating, and avoid changes in the quantity and viscosity of the damping grease 3 or viscous agent, which would lead to unstable damping effect and prevent the mechanism from achieving the expected shock absorption, buffering or precise control of movement speed. At the same time, it can prevent dust, moisture and other impurities from entering the damping cavity 22, contaminating the damping grease 3 or viscous agent, affecting its performance, ensuring the cleanliness of the damping cavity 22, and thus ensuring the performance of the damping grease 3 or viscous agent.

[0067] Furthermore, such as Figure 1-3 As shown, sealing rings 7 are provided around the inner sidewalls of the upper sealing groove 21 and the lower sealing groove 23, respectively. A damping surface 41 is provided on the outer sidewall of the piston assembly 4, and the damping surface 41 is slidably connected to the inner sidewall of the sealing ring 7.

[0068] Specifically, since sealing rings 7 are respectively provided around the inner sidewall of the upper sealing groove 21 and the inner sidewall of the lower sealing groove 23, and a damping surface 41 is provided on the outer sidewall of the piston assembly 4, the damping surface 41 is slidably connected to the inner sidewall of the sealing ring 7. When the piston assembly 4 slides relative to the sealing ring 7, the sealing ring 7 can effectively prevent the damping grease 3 or viscous agent in the damping cavity 22 from leaking into the external environment. At the same time, it can also prevent external dust, moisture and other impurities from entering the damping cavity 22, effectively improving the sealing performance of the sealing assembly 2 and ensuring the stability of the use of the damping grease 3 or viscous agent.

[0069] Furthermore, the surface roughness of the damping surface 41 is Ra1.6μm-Ra12.5μm.

[0070] Specifically, the surface roughness of the damping surface 41 is Ra1.6μm-Ra12.5μm, which can balance the flowability and adhesion of the damping grease 3 or viscous agent, prevent the damping grease 3 or viscous agent from flowing excessively, and this roughness gives the damping surface 41 a certain micro-uneven structure, which can increase the actual contact area between the damping surface 41 and the sealing ring 7. During the sealing process, the damping grease 3 or viscous agent fills between these micro-uneven structures, forming multiple sealing barriers, effectively preventing the leakage of the damping grease 3 or viscous agent, and improving the reliability of the seal.

[0071] like Figure 3 As shown, a spring guide sleeve 42 is provided inside the piston assembly 4, and an elastic element 5 is provided inside the spring guide sleeve 42.

[0072] Specifically, by setting a spring guide sleeve 42 inside the piston assembly 4, and setting the elastic element 5 inside the spring guide sleeve 42, the spring guide sleeve 42 provides a stable support and guiding structure for the elastic element 5, which can constrain the deformation direction of the elastic element 5, so that the elastic element 5 can extend and retract along the predetermined axis, avoid the elastic element 5 from lateral bending or twisting when subjected to force, and ensure the stability of the elastic performance of the elastic element 5.

[0073] Furthermore, the diameter of the spring guide sleeve 42 is larger than the diameter of the elastic element 5 after compression and deformation.

[0074] Specifically, after the elastic element 5 is compressed in the axial direction, it will undergo a certain deformation in the radial direction. In order to prevent the radial deformation of the elastic element 5 after compression from interfering with the spring guide sleeve 42, the diameter of the spring guide sleeve 42 is set to be larger than the diameter of the elastic element 5 after compression and deformation. This allows the elastic element 5 to rebound smoothly after compression, avoiding contact or friction between the radial deformation of the elastic element 5 after compression and the inner wall of the spring guide sleeve 42, which would affect the rebound force of the elastic element 5 and ensure the elastic performance of the elastic element 5.

[0075] Furthermore, such as Figure 3-4 As shown, a first positioning platform 43 is provided on the top inner side of the piston assembly 4, a second positioning platform 61 is provided on the inner wall of the cover plate 6, the top of the elastic element 5 is connected to the first positioning platform 43, and the bottom of the elastic element 5 is connected to the second positioning platform 61.

[0076] Specifically, by setting a first positioning platform 43 on the top inner side of the piston assembly 4 and a second positioning platform 61 on the inner wall of the cover plate 6, the top of the elastic element 5 is connected to the first positioning platform 43 and the bottom of the elastic element 5 is connected to the second positioning platform 61, the radial movement of the elastic element 5 in the piston assembly 4 can be effectively restricted, ensuring that the elastic element 5 can extend and retract along the accurate axial direction during each compression and rebound process, avoiding the elastic element 5 from twisting or bending during axial extension and retraction due to radial offset, improving the consistency of the elastic output of the elastic element 5, thereby improving the operational stability and accuracy of the piston assembly 4.

[0077] Furthermore, a lifting platform 44 is provided around the bottom of the piston assembly 4, and the lifting platform 44 abuts against the inner wall of the outer cylinder 1.

[0078] Specifically, since the piston assembly 4 has a lifting platform 44 at the bottom circumference, which abuts against the inner wall of the outer cylinder 1, it can effectively limit the maximum stroke of the piston assembly 4 after compression and rebound, ensuring that the piston assembly 4 moves within a reasonable stroke range, preventing the piston assembly 4 from having an excessive stroke under the elastic rebound of the elastic element 5, which could lead to loose connection, seal failure, etc., and ensuring stable output of damping force.

[0079] According to embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the bottom of the outer cylinder 1 is provided with several latches 11, and the cover plate 6 is provided with several latch grooves 62 corresponding to the latches 11.

[0080] Specifically, by setting several latches 11 at the bottom of the outer cylinder 1 and setting several latch grooves 62 on the cover plate 6 corresponding to the latches 11, the cover plate 6 can be effectively connected to the bottom of the outer cylinder 1, improving the connection stability between the outer cylinder 1 and the cover plate 6. This ensures that the two ends of the elastic element 5 will not loosen or detach when subjected to vibration or impact, thus ensuring the stability and reliability of the elastic element 5. At the same time, the outer cylinder 1 and the cover plate 6 are easy to install and disassemble without complicated installation steps, improving installation efficiency.

[0081] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A lifting damping spring mechanism, characterized in that, include: An outer cylinder (1) is provided with a sealing assembly (2) along the inner circumference of the outer cylinder (1), and a damping grease (3) is provided inside the sealing assembly (2); The piston assembly (4) is slidably inserted through the inner wall of the sealing assembly (2); The piston assembly (4) is provided with an elastic element (5); The bottom of the outer cylinder (1) is provided with a cover plate (6), one end of the elastic element (5) abuts against the top of the piston assembly (4), and the other end of the elastic element (5) abuts against the inner wall of the cover plate (6); The damping grease (3) is mixed with a thickener.

2. The lifting damping spring mechanism according to claim 1, characterized in that, The sealing assembly (2) includes an upper sealing groove (21), a damping cavity (22), a lower sealing groove (23), and a stroke cavity (24) that are connected sequentially from top to bottom inside the outer cylinder (1).

3. The lifting damping spring mechanism according to claim 2, characterized in that, An oil filling port (221) is provided on one side of the damping cavity (22).

4. The lifting damping spring mechanism according to claim 3, characterized in that, A plug (222) is provided inside the oil filling port (221).

5. The lifting damping spring mechanism according to claim 4, characterized in that, A sealing ring (7) is provided around the inner sidewall of the upper sealing groove (21) and the inner sidewall of the lower sealing groove (23), respectively. A damping surface (41) is provided on the outer sidewall of the piston assembly (4), and the damping surface (41) is slidably connected to the inner sidewall of the sealing ring (7).

6. The lifting damping spring mechanism according to claim 1, characterized in that, The piston assembly (4) is provided with a spring guide sleeve (42), and the elastic element (5) is provided in the spring guide sleeve (42).

7. The lifting damping spring mechanism according to claim 6, characterized in that, The diameter of the spring guide sleeve (42) is larger than the diameter of the elastic element (5) after compression and deformation.

8. The lifting damping spring mechanism according to claim 7, characterized in that, The piston assembly (4) has a first positioning platform (43) on its inner top, and the cover plate (6) has a second positioning platform (61) on its inner wall. The top of the elastic element (5) is connected to the first positioning platform (43), and the bottom of the elastic element (5) is connected to the second positioning platform (61).

9. The lifting damping spring mechanism according to claim 8, characterized in that, The piston assembly (4) has a lifting platform (44) at its bottom periphery, and the lifting platform (44) abuts against the inner wall of the outer cylinder (1).

10. The lifting damping spring mechanism according to any one of claims 1 to 9, characterized in that, The bottom of the outer cylinder (1) is provided with a plurality of latches (11), and the cover plate (6) is provided with a plurality of latch grooves (62) corresponding to the plurality of latches (11).

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