A tunable composite inertia damping shock absorber and its preparation method

Abstract

The present invention discloses a tunable composite inertia-capacitance damping shock absorber and a preparation method thereof. The invention cleverly combines an inertia-capacitance element and a viscous damping element into one, forming a structurally independent inertia-capacitance damping shock absorber. The device contains two sets of ball screw pairs and a double-piston damping hydraulic cylinder, and a spring is arranged in the hydraulic cylinder, so that the present invention integrates energy absorption, energy consumption, and tuning functions and significantly improves efficiency.

Description

Technical Field

[0001] The present invention relates to a vibration reduction (anti-vibration) device for buildings and bridges, and belongs to the technical field of vibration reduction (anti-vibration) for buildings and bridges, and in particular to a tunable composite inertia-capacitance damping shock absorber and a preparation method thereof. Background Art

[0002] The theory of inertia capacity vibration reduction has only been around for over a decade, and inertia capacity technology is an emerging technology in the field of building seismic protection and vibration reduction. Inertia capacity elements have an apparent mass amplification effect, significantly improving the energy transfer efficiency during vibration motion.

[0003] A typical form of inertial capacity damper is the ball screw inertial capacity damper. Its primary structure includes a ball screw assembly, a mass element, and bearings. Because the inertial capacity element is considered to primarily receive and transmit energy, it is typically used in conjunction with an energy dissipation element (such as a damper) and a tuning element (spring). Existing ball screw inertial capacity dampers, however, cannot achieve a complete energy absorption and dissipation process on their own and, with only a single ball screw assembly, leave room for improvement in terms of energy absorption and transmission. Summary of the Invention

[0004] The object of the present invention is to provide a tunable composite inertia-capacitance damping shock absorber which has energy absorption, energy consumption and tuning functions in one and significantly improved efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tunable composite inertia-capacitance damping shock absorber, characterized in that it includes an outer cylinder mass element, wherein an inner cylinder damping element is sleeved within the outer cylinder mass element; a set of ball screw mechanisms are respectively provided at both ends of the outer cylinder mass element, each set of ball screw mechanisms including a ball screw and a ball nut, the ball screw including a piston rod section at the front end and a screw section at the rear end, the screw section of the ball screw passing through an end cap, and the end cap is connected to the end of the outer cylinder mass element; the two sets of ball screw mechanisms have the same structure and are symmetrically arranged, and the two sets of ball screws, respectively, form an inertia-capacitance mechanism with the corresponding end cap and the outer cylinder mass element;

[0007] The piston rod section of the ball screw extends into the inner cylinder damping element and is connected to a group of pistons in the inner cylinder damping element. The two pistons corresponding to the two groups of ball screw mechanisms divide the inner cylinder damping element into three chambers. Each piston is provided with at least one oil hole. The oil holes on the two pistons are connected to the chambers on both sides of the piston, and a tuning spring is provided between the two pistons. The three chambers are filled with viscous damping fluid.

[0008] Preferably, the screw section at the rear end of the ball screw is connected to the end anchor, and the piston rod section at the front end of the ball screw passes through the end cover with the ball nut and extends into the inner cylinder damping element to be connected to the piston.

[0009] Preferably, the end cap is connected to both ends of the outer cylinder mass element through threads.

[0010] Preferably, a conical transition section is provided between the screw section and the piston rod section.

[0011] Preferably, the length of the screw segment is greater than that of the piston rod segment, and the outer diameter of the piston rod segment is smaller than the inner diameter of the screw segment, so that the piston rod segment can pass through the ball nut during installation.

[0012] Preferably, the screw segment and the piston rod segment adopt an integrated structure.

[0013] Preferably, at least one inter-cylinder bearing is provided between the outer cylinder mass element and the inner cylinder damping element.

[0014] Preferably, a tuning element is provided in the chamber 2 between the piston 1 and the piston 2, and the tuning element is a spring.

[0015] The present invention also provides a method for preparing a tunable composite inertia-capacitance damping shock absorber, comprising the following steps:

[0016] S1: Material selection: The outer cylinder mass element and the inner cylinder damping element are made of alloy steel with mechanical properties not less than 40Cr, or stainless steel with mechanical properties not less than 14Cr17Ni2;

[0017] S2: Determination of main technical parameters:

[0018] S21: Set the applicable earthquake fortification level and the corresponding earthquake acceleration value;

[0019] S22: The inertia force of the inertia unit, the ball screw pair, and the damping force of the viscous damper should comply with the following:

[0020] Inertia force of inertia unit ≤ rated load of ball screw pair ≤ maximum damping force of viscous damper

[0021] S221: Determine the specifications and dimensions of the outer cylinder mass element based on the inertial force formula of the inertial volume unit;

[0022]

[0023] F in is the inertia force of the inertia container, L d is the screw lead, m f is the actual mass, r o is the outer diameter of the outer cylinder mass element, r iis the inner diameter of the outer cylinder mass element, u1 and u2 are the accelerations at both ends;

[0024] S222: Determine the specifications of the inner cylinder damping element based on the rated load of the ball screw pair and the specifications and dimensions of the outer cylinder mass element;

[0025] S23: The effective strokes of the inertia unit screw and the damping unit piston should be consistent;

[0026] S3: Processing and assembly: Processing and assembly are carried out in the following order:

[0027] S31: Processing of the outer cylinder mass unit: Select steel pipes and end caps that meet the requirements as blanks; process internal threads on both ends of the steel pipe, process circular holes on the axis of the end cap, and process external threads on the outer profile of the end cap. The internal threads of the steel pipe match the external threads of the end cap.

[0028] S32: Processing of ball screw pair screw: The screw of the ball screw pair is divided into a screw section and a piston rod section. The length of the screw section is greater than the length of the piston rod section, and the outer diameter of the piston rod section is smaller than the inner diameter of the screw section, so that the piston rod section can pass through the ball nut during installation;

[0029] S33: Installation of inter-cylinder bearing: First, heat the inter-cylinder bearing and install it on the outer wall of the inner cylinder damping element. After cooling, the inter-cylinder bearing is fastened to the outer wall of the inner cylinder damping element.

[0030] S34: Install the ball screw nut into the end cover hole;

[0031] S35: Insert the end cap with the ball nut from one end of the piston rod segment and sleeve it onto the screw segment of the ball screw;

[0032] S36: Connect the piston rod section of the ball screw to the piston of the inner cylinder damping element;

[0033] S37: Install the tuning element spring into the cylinder of the inner cylinder damping element;

[0034] S38: Install the piston rod sections of the two ball screws connected to the pistons into the inner cylinder damping element cylinder from both ends of the inner cylinder damping element cylinder, seal and tighten, and add silicone oil;

[0035] S39: Sleeve the outer cylinder mass element onto the outer side of the inner cylinder damping element. After positioning, fix the outer ring of the inter-cylinder bearing to the outer cylinder mass element.

[0036] S310: Screw and fasten the end caps to both ends of the outer cylinder mass element to complete the processing and installation. Compared with the existing technology, the present invention has the following advantages:

[0037] 1. The present invention includes not only an inertia unit, but also a damping unit and a tuning unit, forming an independent inertia unit damping shock absorption device. Compared with the existing inertia unit, damping unit and tuning unit, it is more convenient for engineering installation and engineering application.

[0038] 2. The dual inertia mechanism formed by the two ball screw structures provided by the present invention can absorb and transmit more energy, and the inertia effect is greater.

[0039] 3. The dual damping mechanism consisting of dual pistons and three chambers provided by the present invention can consume more energy.

[0040] This invention cleverly integrates an inertial capacitance element with a viscous damping element to create a structurally independent inertial capacitance damping shock absorber. The device comprises two ball screw pairs and a dual-piston damping hydraulic cylinder, within which a tuning element—a spring—is installed. This results in a tunable composite inertial capacitance damping shock absorber that integrates energy absorption, dissipation, and tuning functions, while significantly improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic structural diagram of a tunable composite inertia-capacitance damping shock absorber proposed by the present invention;

[0042] Figure 2 This is a structural schematic diagram of an integrated screw piston rod in a tunable composite inertia-capacitance damping shock absorber proposed by the present invention.

[0043] The serial numbers in the figure are as follows:

[0044] 1. Ball screw 1; 2. Ball screw 2; 3. Outer cylinder mass element; 4. Inner cylinder damping element; 5. Tuning element; 6. End anchor; 7. Inter-cylinder bearing; 8. Piston 1; 9. Piston 2; 10. Chamber 1; 11. Chamber 2; 12. Chamber 3; 13. Oil hole; 14. Screw section; 15. Piston rod section; 16. Conical transition section; 17. End cover. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] like Figure 1 and Figure 2As shown, the present invention provides a tunable composite inertia damping shock absorber, including an outer cylinder mass element 3, wherein the outer cylinder mass element 3 is provided with an inner cylinder damping element 4; both ends of the outer cylinder mass element 3 are provided with end covers 17, and the end covers 17 are embedded with ball nuts; both ends of the outer cylinder mass element 3 are connected to a ball screw 1 and a ball screw 2, respectively, and the ball screw 1 and the ball screw 2 are symmetrically arranged and located on the same axis of the outer cylinder mass element 3 and the inner cylinder damping element 4. The ball screw 1 and the ball screw 2 have the same structure, but due to the difference between the ball screw 1 and the ball screw 2, the outer cylinder mass element 3 and the inner cylinder damping element 4 are symmetrically arranged and located on the same axis of the outer cylinder mass element 3 and the inner cylinder damping element 4. The screws 2 are symmetrically arranged, so the helical directions of the screw segments on ball screws 1 and 2 are opposite. One end of the screw segment of ball screw 1 is connected to a perforated end anchor 6. The other end of the screw segment of ball screw 1 passes through an end cap 17 with a ball nut. The piston rod segment of ball screw 1 extends into the inner cylinder damping element 4 and connects to piston 1 8. One end of the screw segment of ball screw 2 is connected to another perforated end anchor 6. The other end of the screw segment of ball screw 2 passes through an end cap with another ball nut, extends into the inner cylinder damping element 4, and connects to piston 2 9. Both ball screws 1 and 2 are connected to the inner cylinder damping element 4 at both ends using dynamic seals.

[0047] Piston 1 8 and piston 2 9 divide the inner cylinder damping element 4 into three chambers: chamber 10 formed between piston 1 8 and the inner cylinder damping element 4; chamber 2 11 formed between piston 1 8 and piston 2 9; and chamber 3 12 formed between piston 2 9 and the inner cylinder damping element 4. Each piston 1 8 and piston 2 9 is provided with at least one oil hole 13. These oil holes connect the chambers on either side of the piston. A tuning spring is located between the two pistons, and the chamber between the two pistons is filled with viscous damping fluid.

[0048] Furthermore, the end cover 17 provided by the present invention is connected to both ends of the outer cylinder mass element 3 via threads.

[0049] Furthermore, the ball screw provided by the present invention includes a screw segment 14 and a piston rod segment 15 , and a conical transition segment 16 is provided between the screw segment 14 and the piston rod segment 15 .

[0050] Furthermore, the length of the screw segment 14 provided by the present invention is greater than that of the piston rod segment 15, and the outer diameter of the piston rod segment 15 is smaller than the inner diameter of the screw segment 14, so that the piston rod segment 15 can pass through the ball nut during installation.

[0051] Furthermore, the piston rod section 15 of the screw section 14 provided by the present invention adopts an integrated structure.

[0052] Furthermore, the present invention provides at least one inter-cylinder bearing 7 between the outer cylinder mass element 3 and the inner cylinder damping element 4 , and the number of the inter-cylinder bearings 7 is 1-5. The inter-cylinder bearings 7 are evenly arranged on the outer wall of the inner cylinder mass element 4 .

[0053] Furthermore, a tuning element 5 is provided in the chamber 2 11 between the piston 1 8 and the piston 2 9 provided by the present invention, and the tuning element 5 is a spring.

[0054] The present invention also provides a method for preparing the tunable composite inertia-capacitance damping shock absorber, which comprises the following steps:

[0055] S1: Material selection: The outer cylinder mass element 3 and the inner cylinder damping element 4 are made of alloy steel with mechanical properties not less than 40Cr, or stainless steel with mechanical properties not less than 14Cr17Ni2;

[0056] S2: Determination of main technical parameters:

[0057] S21: Set the applicable earthquake fortification level and the corresponding earthquake acceleration value.

[0058] S22: The inertia force of the inertia unit, the ball screw pair, and the damping force of the viscous damper should comply with the following:

[0059] Inertia force of inertia unit ≤ rated load of ball screw pair ≤ maximum damping force of viscous damper

[0060] S221: Determine the specifications and dimensions of the outer cylinder mass element 3 according to the inertial force formula of the inertial volume unit;

[0061]

[0062] F in is the inertia force of the inertia container, L d is the screw lead, m f is the actual mass, r o is the outer diameter of the outer cylinder mass element, r i is the inner diameter of the outer cylinder mass element, u1 and u2 are the accelerations at both ends;

[0063] S222: Determine the specifications of the inner cylinder damping element 4 based on the rated load of the ball screw pair and the specifications and dimensions of the outer cylinder mass element 3;

[0064] S23: The effective strokes of the inertia unit screw and the damping unit piston should remain consistent.

[0065] S3: Processing and assembly. Processing and assembly are carried out in the following order:

[0066] S31: Machining of outer cylinder mass unit 3: Select steel pipes and end caps that meet the requirements as blanks. Process internal threads on both ends of the steel pipe, a circular hole at the axis of the end cap, and external threads on the outer profile of the end cap. The internal threads of the steel pipe match the external threads of the end cap.

[0067] S32: Processing of the ball screw pair's lead screw. The lead screw of the ball screw pair is divided into a screw section and a piston rod section. The length of the screw section 14 is greater than the length of the piston rod section 15, and the outer diameter of the piston rod section 15 is smaller than the inner diameter of the screw section 14, so that the piston rod section can pass through the ball nut during installation.

[0068] S33: Installation of the inter-cylinder bearing 7. The inter-cylinder bearing 7 is first heated and installed on the outer wall of the inner cylinder damping element 4. After cooling, the inter-cylinder bearing 7 is fastened to the outer wall of the inner cylinder damping element 4.

[0069] S34: Install the ball screw nut into the end cover hole;

[0070] S35: Insert the end cap 17 with the ball nut from one end of the piston rod section 15 and sleeve it onto the screw section 14 of the ball screw;

[0071] S36: Connect the piston rod section 15 of the ball screw to the piston of the inner cylinder damping element 4;

[0072] S37: Install the spring of the tuning element 5 into the cylinder of the inner cylinder damping element 4;

[0073] S38: Install the piston rod segments 15 of the two ball screws connected to the pistons into the inner cylinder damping element 4 from both ends of the inner cylinder damping element 4, seal and tighten, and add silicone oil;

[0074] S39: Sleeve the outer cylinder mass element 3 onto the outer surface of the inner cylinder damping element 4. After positioning, fix the outer ring of the inter-cylinder bearing 7 to the outer cylinder mass element.

[0075] S310: Screw and fasten the end caps to both ends of the outer cylinder mass element 3 to complete the processing and installation.

[0076] The following is a description of the specific embodiments:

[0077] Taking a 30-ton tunable composite inertia damping shock absorber as an example, the implementation process and effect of this patent are explained.

[0078] The first step is to select 40Cr alloy steel as the material of the outer cylinder mass element and the inner cylinder damping element.

[0079] Step 2: Determination of main technical parameters

[0080] 1. Set the applicable earthquake fortification level to 9, the corresponding earthquake acceleration value is 0.4g, and the amplitude is ±50mm.

[0081] 2. Determine the parameters of the outer cylinder mass element and the inner cylinder damping element

[0082] (1) The dynamic rated load of the ball screw is selected to be 30 tons. The damping force of the viscous damper is 30 tons. The inertia force of a single inertia element is also 30 tons.

[0083] (2) Based on the set inertia force, the calculation formula of the inertia force of the inertia unit and the set acceleration value of 0.4g, the lead of the ball screw pair, the outer diameter of the outer cylinder mass element, the wall thickness, and the inner diameter of the outer cylinder mass unit (the outer diameter of the ball nut) are verified.

[0084] The verified technical parameters are as follows:

[0085] The lead of the ball screw pair is 15mm, the outer diameter of the outer cylinder mass element is 240mm, the wall thickness is 5mm, the inner diameter of the outer cylinder mass unit (the outer diameter of the ball nut) is 90mm, and the length of the outer cylinder mass element is 800mm. The outer diameter of the inner cylinder damping element is 180mm, the wall thickness is 10mm, and the length is 400mm. The length of the screw section of the ball screw pair is L 10 The diameter of the screw section is 280mm, the diameter of the screw section is 50mm, and the length of the piston section is L 20 The diameter of the piston rod section is 35mm, and the effective stroke of the screw section and piston section is 100mm.

[0086] The third step is processing and assembly. Processing and assembly are carried out in the following order:

[0087] 1. Machining the outer cylinder mass unit. Prepare a 40Cr alloy steel pipe with an outer diameter of 250mm, a wall thickness of 10mm, and a length of 800mm as the outer cylinder blank. Prepare a 40Cr round steel bar with an outer diameter of 240mm and a thickness of 60mm as the end cap blank. Machine internal threads on the inner wall of each end of the outer cylinder blank. Machine a 90mm diameter internal through-hole in the center of the end cap blank. Then, machine external threads on the end cap that match the outer cylinder internal threads.

[0088] 2. Processing the ball screw assembly. Prepare a ball screw nut with an outer diameter of 90mm. Process the screw blank into a screw segment with a length of 280mm and a diameter of 50mm, and a piston rod segment with a length of 150mm and a diameter of 35mm. A tapered transition section is formed between the screw and piston rod segments. The screw segment, tapered transition section, and piston rod segment are integrated.

[0089] 3. Prepare the cylinder and piston for the inner cylinder damping element. The outer diameter of the inner cylinder damping element is 180mm, the wall thickness is 10mm, and the length is 400mm. The piston specifications match the cylinder.

[0090] 4. Installation of inter-cylinder bearings: First heat the bearings and install them on the outer wall of the inner cylinder damping element. After cooling, tighten the bearings on the outer wall of the inner cylinder damping element.

[0091] 5. Connect the tuning element and the piston, and then install the piston and tuning element into the cylinder of the damping element.

[0092] 6. Install the ball screw nut into the end cover hole.

[0093] 7. Insert the end cover with the ball nut from one end of the piston rod section and connect it to the screw section of the ball screw.

[0094] 8. Install the piston rod sections of the two ball screws connected to the piston into the inner cylinder damping element cylinder from both ends of the inner cylinder damping element cylinder, tighten after sealing, and add silicone oil.

[0095] 9. Sleeve the cylinder of the outer cylinder mass element onto the outside of the inner cylinder damping element. After positioning, fix the outer ring of the bearing to the outer cylinder mass element.

[0096] 10. Tighten the end caps and secure them to both ends of the outer cylinder mass element.

[0097] After the above process, a tunable composite inertia damping shock absorber is processed and installed.

[0098] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for preparing a tunable composite inertia-capacitance damping shock absorber, characterized in that: The tunable composite inertia-capacitance damping shock absorber comprises an outer cylinder mass element (3), wherein an inner cylinder damping element (4) is sleeved in the outer cylinder mass element (3); a group of ball screw mechanisms are respectively provided at both ends of the outer cylinder mass element (3), wherein each group of ball screw mechanisms comprises a ball screw and a ball nut, wherein the ball screw comprises a piston rod section (15) at the front end and a screw section (14) at the rear end, wherein the screw section (14) of the ball screw passes through an end cover (17), and the end cover (17) is connected to the end of the outer cylinder mass element (3); the two groups of ball screw mechanisms have the same structure and are symmetrically arranged, and the two groups of ball screws respectively form an inertia-capacitance mechanism with the corresponding end cover and the outer cylinder mass element (3); The piston rod section (15) of the ball screw extends into the inner cylinder damping element (4) and is connected to the two pistons in the inner cylinder damping element (4). The two pistons corresponding to the two sets of ball screw mechanisms divide the inner cylinder damping element (4) into three chambers. Each piston is provided with at least one oil hole (13). The oil holes (13) on the two pistons are connected to the chambers on both sides of the pistons. A tuning spring is provided between the two pistons. The three chambers are filled with viscous damping liquid. The preparation method comprises the following steps: S1: Material selection: The outer cylinder mass element (3) and the inner cylinder damping element (4) are made of alloy steel with mechanical properties not less than 40Cr, or stainless steel with mechanical properties not less than 14Cr17Ni2; S2: Determination of main technical parameters: S21: Set the applicable earthquake fortification level and the corresponding earthquake acceleration value; S22: The inertia force of the inertia unit, the ball screw pair, and the damping force of the viscous damper should comply with the following: Inertia force of inertia unit ≤ rated load of ball screw pair ≤ maximum damping force of viscous damper S221: Determine the specifications and dimensions of the outer cylinder mass element (3) according to the inertial force formula of the inertial volume unit; F in is the inertia force of the inertia container, L d is the screw lead, m f is the actual mass, r o is the outer diameter of the outer cylinder mass element, r i is the inner diameter of the outer cylinder mass element, u1 and u2 are the accelerations at both ends; S222: Determine the specifications of the inner cylinder damping element (4) based on the rated load of the ball screw pair and the specifications and dimensions of the outer cylinder mass element (3); S23: The effective strokes of the inertia unit screw and the damping unit piston should be consistent; S3: Processing and assembly: Processing and assembly are carried out in the following order: S31: Processing of the outer tube mass element (3): Select steel pipes and end caps that meet the requirements as blanks; process internal threads on both ends of the steel pipe, process a circular hole at the axis of the end cap, and process external threads on the outer profile of the end cap, so that the internal threads of the steel pipe match the external threads of the end cap; S32: Processing of the ball screw pair screw: The ball screw pair screw is divided into a screw section and a piston rod section. The length of the screw section (14) is greater than the length of the piston rod section (15). The outer diameter of the piston rod section (15) is smaller than the inner diameter of the screw section (14), so that the piston rod section can pass through the ball nut during installation. S33: Installing the inter-cylinder bearing (7): First, heat the inter-cylinder bearing (7) and install it on the outer wall of the inner cylinder damping element (4). After cooling, the inter-cylinder bearing (7) is fastened to the outer wall of the inner cylinder damping element (4). S34: Install the ball screw nut into the end cover hole; S35: Insert the end cap (17) equipped with the ball nut from one end of the piston rod section (15) and sleeve it onto the screw section (14) of the ball screw; S36: Connecting the piston rod section (15) of the ball screw to the piston of the inner cylinder damping element (4); S37: Install the spring of the tuning element (5) into the cylinder of the inner cylinder damping element (4); S38: Install the piston rod sections (15) of the two ball screws connected to the piston into the inner cylinder damping element (4) from both ends of the inner cylinder damping element (4), seal and tighten, and add silicone oil; S39: Sleeve the outer cylinder mass element (3) onto the outer surface of the inner cylinder damping element (4), and after positioning, fix the outer ring of the inter-cylinder bearing (7) to the outer cylinder mass element; S310: Screw and fasten the end caps to both ends of the outer cylinder mass element (3) to complete the processing and installation.

2. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 1, characterized in that: The screw section (14) at the rear end of the ball screw is connected to the end anchor (6), and the piston rod section (15) at the front end of the ball screw passes through the end cover (17) with the ball nut and extends into the inner cylinder damping element (4) to be connected to the piston.

3. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 2, characterized in that: The end cover (17) is connected to both ends of the outer cylinder mass element (3) through threads.

4. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 2, characterized in that: A conical transition section (16) is provided between the screw section (14) and the piston rod section (15).

5. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 4, characterized in that: The length of the screw segment (14) is greater than that of the piston rod segment (15), and the outer diameter of the piston rod segment (15) is smaller than the inner diameter of the screw segment (14), so that the piston rod segment (15) can pass through the ball nut during installation.

6. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 4, characterized in that: The screw section (14) and the piston rod section (15) adopt an integrated structure.

7. The method for preparing a tunable composite inertia-capacitance damping shock absorber according to claim 1, characterized in that: At least one inter-cylinder bearing (7) is provided between the outer cylinder mass element (3) and the inner cylinder damping element (4).

Images