A screw pump type energy dissipation inertia shock absorber and its application method

Abstract

The present invention discloses a screw pump type energy dissipation inertia shock absorber and its application method, wherein the screw pump type energy dissipation inertia shock absorber includes a left cylinder and a right cylinder connected to each other, wherein the left cylinder and the right cylinder are provided with a screw pump mechanism, a left inertia system, and a right inertia system; the left inertia system and the right inertia system are respectively connected to the screw pump mechanism, and the left inertia system and the right inertia system have the same size and structure and are symmetrically arranged with the screw pump mechanism; the left inertia system and the right inertia system, the screw pump mechanism, and the left cylinder and the right cylinder form a left chamber and a right chamber; the left chamber and the right chamber are connected by an oil pipe. By adopting two inertia elements, the present invention can absorb more external excitation energy, and dissipate energy by compressing the hydraulic oil when the screw pump mechanism is working and by dissipating energy by the hydraulic oil flowing from the high-pressure chamber through the capillary tube to the low-pressure chamber. This solves the problem that the inertia container itself cannot consume energy.

Description

Technical Field

[0001] This patent relates to the field of shock absorption (anti-vibration) technology for buildings and large industrial installations, and in particular to a screw pump type energy dissipation inertia shock absorber and its application method. Background Art

[0002] Inertia capacitance is a new technology in the field of seismic isolation. Its essence lies in converting linear motion into rotational motion through a core inertia device, such as a ball screw pair. Energy absorption and transfer are achieved through the apparent mass amplification of the inertia mass element. Therefore, the inertia device itself only absorbs and transfers external excitation energy and cannot dissipate it. Shock absorption devices, on the other hand, not only absorb but also dissipate vibration energy. Currently, the main energy dissipation devices used in shock absorbers include viscous dampers and electromagnetic dissipators. Summary of the Invention

[0003] The object of the present invention is to provide a screw pump mechanism energy dissipation inertia damper capable of absorbing more external excitation energy and an application method thereof.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A screw pump type energy dissipation inertial capacity shock absorber includes a left cylinder and a right cylinder connected to each other, wherein a screw pump mechanism, a left inertial capacity system and a right inertial capacity system are provided in the left cylinder and the right cylinder; the left inertial capacity system and the right inertial capacity system are respectively connected to the screw pump mechanism, and the left inertial capacity system and the right inertial capacity system have the same size and structure and are symmetrically arranged with the screw pump mechanism; a left chamber and a right chamber are formed between the left inertial capacity system and the right inertial capacity system, the screw pump mechanism and the left cylinder and the right cylinder; the left chamber and the right chamber are communicated through an oil pipe.

[0006] Preferably, the left inertial capacity system and the right inertial capacity system both include an end cover, an inertial capacity mass unit and a ball screw pair; the ball screw pair includes a ball screw and a ball nut; the inertial capacity mass unit adopts a cylindrical cone complex; the cylindrical cone complexes of the two inertial capacity mass units of the left inertial capacity system and the right inertial capacity system are respectively connected to the screw pump mechanism and are symmetrically arranged with the screw pump mechanism; a ball nut is provided in the inertial capacity mass unit, one end of the ball screw is arranged outside the end cover and connected to the end anchor, and the other end of the ball screw passes through the end cover and is connected to the ball nut.

[0007] Preferably, a thrust bearing is provided between the end cover and the inertia mass unit, one end of the ball screw pair is arranged outside the end cover and connected to the end anchor, and the other end of the ball screw pair passes through the end cover and the thrust bearing and is connected to the ball nut.

[0008] Preferably, the screw pump mechanism includes a screw pump mechanism stator and a screw pump mechanism rotor, the screw pump mechanism stator is arranged in the stator outer tube of the cylinder, the screw pump mechanism rotor is arranged in the screw pump mechanism stator, and the two ends of the screw pump mechanism rotor are respectively connected to the cylindrical cone complex of the two inertial mass units of the left inertial system and the right inertial system.

[0009] Preferably, the left and right cylinders are provided with internal threads, the outer wall of the stator outer cylinder is provided with external threads matching the internal threads of the left and right cylinders, and the left and right cylinders are connected to the stator outer cylinder through threads.

[0010] Preferably, the threads on the two ball screws of the left inertial system and the right inertial system rotate in opposite directions.

[0011] Preferably, a seal is provided between the left inertial mass unit, the right inertial mass unit, and the left cylinder and the right cylinder.

[0012] Preferably, the seal comprises a first seal and a second seal.

[0013] Preferably, the end cover is a hollow cylinder, one end of the end cover is a planar structure, the other end of the end cover is a ring end, the ring end is provided with an external thread, and the two end covers are respectively connected to the left cylinder and the right cylinder through threads.

[0014] The present invention also provides an application method of a screw pump type energy dissipation inertia capacity shock absorber, which is specifically as follows:

[0015] When the ball screw pairs are relatively advanced, axial external vibration excitation is applied to the device through the end anchors. After being subjected to force, the ball screws at both ends of the device are relatively advanced, driving the inertial mass unit to rotate through the ball nuts. The rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate. The rotation of the screw pump mechanism rotor compresses the hydraulic oil in the screw pump mechanism and pushes it to one chamber, while sucking hydraulic oil from the other chamber. The oil pressure in the chamber receiving oil increases, and the hydraulic oil in the chamber flows into the other chamber through the external oil pipe. The operation of the screw pump mechanism and the flow of hydraulic oil from the high-pressure chamber to the low-pressure chamber through the oil pipe consume the energy transmitted by the inertial system.

[0016] When the ball screw pair relatively retreats, the direction of the external vibration excitation changes. The ball screws at both ends, under force, retreat relative to each other, driving the inertial mass unit to rotate in the opposite direction via the ball nut. The reverse rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate in the opposite direction. As the rotor of the screw pump mechanism rotates in the opposite direction, the hydraulic oil in the device circulates in the opposite direction to the above, and this process also consumes the energy transmitted by the inertial system.

[0017] Through the continuous alternation of the above two processes, a screw pump type energy dissipation inertia shock absorber continuously absorbs and consumes energy to achieve the energy dissipation and shock reduction function.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can absorb more external excitation energy by adopting two inertial capacitance elements.

[0020] 2. The present invention has two energy dissipation processes:

[0021] (1) The screw pump mechanism compresses the hydraulic oil to dissipate energy when it is working.

[0022] (2) The hydraulic oil flows from the high-pressure chamber through the capillary tube to the low-pressure chamber to dissipate energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the longitudinal cross-section structure of a screw pump type energy dissipation inertia capacity shock absorber proposed in the present invention.

[0024] The serial numbers in the figure are as follows:

[0025] 1. Left ball screw pair; 2. Seal 1; 3. Left cylinder; 4. Right cylinder; 5. Left inertia mass element; 6. Right inertia mass element; 7. Left chamber; 8. Right chamber; 9. Ball nut; 10. Left thrust bearing; 11. Right thrust bearing; 12. Screw pump mechanism rotor; 13. Oil pipe; 14. Screw pump mechanism stator; 15. Stator outer cylinder; 16. Seal 2; 17. Left end cover; 18. Left end anchor. DETAILED DESCRIPTION

[0026] 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.

[0027] like Figure 1 As shown, the present invention provides a screw pump type energy dissipation inertia shock absorber, including a left cylinder 3 and a right cylinder 4 connected to each other, wherein the left cylinder 3 and the right cylinder 4 are provided with a screw pump mechanism, a left inertia system and a right inertia system; the left inertia system and the right inertia system are identical in size and structure and are symmetrically arranged with the screw pump mechanism; a left chamber 7 and a right chamber 8 are formed between the left inertia system and the right inertia system, the screw pump mechanism and the left cylinder 3 and the right cylinder 4; the left chamber 7 and the right chamber 8 are communicated with each other through an external oil pipe 13, and the left and right chambers and the oil pipe 13 are filled with hydraulic oil.

[0028] The screw pump mechanism includes a screw pump mechanism stator 14 and a screw pump mechanism rotor 12 . The screw pump mechanism stator 14 is disposed in a cylindrical stator outer barrel 15 , and the screw pump mechanism rotor 12 is disposed in the screw pump mechanism stator 14 .

[0029] The left inertial system includes a left end cover 17, a left end anchor 18, a left inertial mass unit 5 and a left ball screw pair 1; the right inertial system includes a right end cover, a right end anchor, a right inertial mass unit 6 and a right ball screw pair; and the left ball screw pair 1 and the right ball screw pair both include a ball screw and a ball nut; the two inertial mass units both adopt a cylindrical cone complex; the cylindrical cone complexes of the two inertial mass units of the left inertial system and the right inertial system are respectively connected to the two ends of the screw pump mechanism rotor 12, and are symmetrically installed with the screw pump mechanism rotor 12. The two inertial mass units are rigidly connected to the screw pump mechanism rotor 12, and the "left inertial mass element 5, the screw pump mechanism rotor 12 and the right inertial mass element 6" rotate in the closed space formed by the left cylinder 3, the stator outer cylinder 5 and the right cylinder 4.

[0030] Ball nuts 9 are embedded in the left and right inertial mass units 5, 6. On the left inertial mass unit 5 side, the ball screw of the left ball screw pair 1 is mounted on the outside of the left end cap 17 and connected to the left end anchor 18. The other end of the ball screw of the left ball screw pair 1 passes through the left end cap 17 and connects to the ball nut inside the left inertial mass unit 5. The right inertial mass unit 6 has the same dimensions and structure as the left inertial mass unit 5. Similarly, on the right inertial mass unit 6 side, the ball screw of the right ball screw pair is mounted on the outside of the right end cap and connected to the right end anchor. The other end of the ball screw of the right ball screw pair passes through the right end cap and connects to the ball nut inside the right inertial mass unit 6. The threads on the two ball screws of the left and right inertial mass units rotate in opposite directions.

[0031] Thrust bearings, namely the left thrust bearing 10 and the right thrust bearing 11, are installed between the left and right inertial mass units 5 and 6 and their corresponding end caps. When connected, one end of the ball screw of the left ball screw pair 1 is positioned outside the left end cap 17 and connected to the left end anchor 18. The other end of the ball screw of the left ball screw pair 1 passes through the left end cap 17 and the left thrust bearing 10, and then connects to the ball nut of the left inertial mass unit 5. One end of the ball screw of the right ball screw pair is positioned outside the right end cap and connected to the right end anchor. The other end of the ball screw of the right ball screw pair passes through the right end cap and the right thrust bearing, and then connects to the ball nut of the right inertial mass unit 6.

[0032] Furthermore, the left cylinder 3 and the right cylinder 4 provided by the present invention are provided with internal threads, and the outer wall of the stator outer cylinder 15 is provided with external threads matching the internal threads of the left cylinder 3 and the right cylinder 4. The left cylinder 3 and the right cylinder 4 are connected to the stator outer cylinder 15 through threads to form an integrated structure.

[0033] Furthermore, a seal 1 2 and a seal 2 16 are installed between the left inertial mass unit 5 and the right inertial mass unit 6 and the left cylinder 3 and the right cylinder 4 provided by the present invention.

[0034] Furthermore, the end covers provided in the present invention are all hollow cylinders, one end of the left end cover is a planar structure, and the other end of the end cover is a ring end with an external thread. The two end covers are respectively connected to the left cylinder 3 and the right cylinder 4 through threads.

[0035] The present invention also provides an application method of a screw pump type energy dissipation inertia capacity shock absorber, which is specifically as follows:

[0036] When the ball screw pairs are relatively advanced, axial external vibration excitation is applied to the device through the end anchors. After being subjected to force, the ball screws at both ends of the device are relatively advanced, driving the inertial mass unit to rotate through the ball nuts. The rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate. The rotation of the screw pump mechanism rotor compresses the hydraulic oil in the screw pump mechanism and pushes it to one chamber, while sucking hydraulic oil from the other chamber. The oil pressure in the chamber receiving oil increases, and the hydraulic oil in the chamber flows into the other chamber through the external oil pipe. The operation of the screw pump mechanism and the flow of hydraulic oil from the high-pressure chamber to the low-pressure chamber through the oil pipe consume the energy transmitted by the inertial system.

[0037] When the ball screw pair relatively retreats, the direction of the external vibration excitation changes. The ball screws at both ends, under force, retreat relative to each other, driving the inertial mass unit to rotate in the opposite direction via the ball nut. The reverse rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate in the opposite direction. As the rotor of the screw pump mechanism rotates in the opposite direction, the hydraulic oil in the device circulates in the opposite direction to the above, and this process also consumes the energy transmitted by the inertial system.

[0038] In summary, when the ball screw pair advances or retracts relative to each other, external vibration excitation is transmitted to the ball screw pair at both ends through the left and right end anchors. The advancement and retraction of the screws (acceleration of both ends) transfers energy to the left and right inertial mass elements through the ball nuts. The left and right inertial mass elements rotate synchronously in the same direction, driving the screw pump mechanism rotor 12 to rotate synchronously. The screw pump mechanism operates, compressing the hydraulic oil in one chamber and pump and pushing it toward the other chamber. This increases the oil pressure in the receiving chamber, and the hydraulic oil flows through an external capillary tubing to the low-pressure chamber. The operation of the screw pump mechanism and the circulation of the hydraulic oil through the capillary tubing consume energy.

[0039] Through the continuous alternation of the above two processes, a screw pump type energy dissipation inertia shock absorber continuously absorbs and consumes energy to achieve the energy dissipation and shock reduction function.

[0040] The preparation method of the present invention is as follows:

[0041] The first step is to set the application scenario, design the force and amplitude of the inertia unit according to the application scenario, determine the specifications of the ball screw pair, the inertia mass unit parameters, and the barrel parameters, and match the screw specifications.

[0042] The second step is to determine the material of the parts.

[0043] Step 3: Design, process and prepare the required parts according to the first step.

[0044] (1) Processing of the inertial mass unit. A solid round steel segment is formed into an inertial mass unit by machining a conical surface, a ball nut hole at the bottom, a blind hole at the end, and a seal groove. The blind hole at the end matches the outer diameter of the end of the screw pump mechanism rotor. The two inertial mass units are identical.

[0045] (2) Processing of ball screw pairs. The front end of the ball screw of the ball screw pair is the screw section, and the rear end is the polished rod section. The two ball screw pairs have the same specifications, and the screw sections have opposite spiral directions, and are matched with two ball nuts with opposite spiral directions.

[0046] (3) Cylinder Processing. The left and right cylinders are made of steel pipes and have internal threads on both ends. The left and right cylinders are identical and interchangeable. Thread-blocking holes are machined through the cylinder wall on each cylinder.

[0047] (4) Processing of the end caps. The end caps are made of round steel sections. One end is the bottom end with a central hole, and the other end is the ring end with external threads. Both end caps are identical. The external threads of the end caps match the internal threads of the cylinder.

[0048] (5) Processing of the stator outer cylinder. A circular hole is machined in the center of the round steel shaft, and external threads are machined on the outer walls of the round steel at both ends to form the stator outer cylinder. The external threads of the stator outer cylinder match the internal threads of the left and right cylinders. The center hole of the stator outer cylinder matches the stator outer diameter of the screw pump mechanism.

[0049] (6) Prepare the required specialized parts:

[0050] ——The ball nut of the ball screw pair should match the ball screw being processed;

[0051] ——Thrust bearing, matching the inner diameter of the cylinder;

[0052] ——Screw pump mechanism, the stator outer diameter matches the stator outer cylinder, and the rotor length matches the installation spacing of the left and right inertial mass units.

[0053] ——Seals, seals are matched with inertial mass units.

[0054] Step 4: Installation. The installation is carried out in the following order:

[0055] (1) Installation of the screw pump mechanism stator. Install the screw pump mechanism stator into the inner hole of the stator outer cylinder.

[0056] (2) Installation of the screw pump mechanism rotor. Install the screw pump mechanism rotor into the stator of the screw pump mechanism.

[0057] (3) Installation of ball nuts. Install the two ball nuts in the bottom holes of the two inertial mass units and tighten them.

[0058] (4) Connection between the rotor and the inertial mass unit. Connect the small ends of the left and right inertial mass units to the two ends of the screw pump mechanism rotor from both ends, keep them coaxial, and fix them with keys and keyways.

[0059] (5) Installation of seals. Install the seals in the sealing grooves of the left and right inertial mass units respectively.

[0060] (6) Installation of thrust bearings. Install the thrust bearings in the left and right cylinders.

[0061] (7) Installation of the left and right cylinders. Sleeve the left and right cylinders onto the left and right inertia mass units respectively, and connect them to the stator outer cylinder through threads.

[0062] (8) Insert the ball screw into the hole in the end cap and screw the screw section of the ball screw into the corresponding ball nut. Then connect the end cap to the left and right ends of the cylinder through threads. After the end cap is installed in place, tighten the thrust bearing.

[0063] (9) Installation of oil pipe: Inject hydraulic oil into the internal chamber of the device through the plug hole. After it is allowed to stand, install the external oil pipe and seal it.

[0064] After the above four steps, a screw pump type energy dissipation inertia capacity shock absorber is manufactured and installed. After the installation is completed, the device is tested to check whether it operates smoothly.

[0065] The following is an explanation based on the parameters of the embodiment:

[0066] Example

[0067] Taking the 30-ton screw pump mechanism energy dissipation inertia shock absorber for construction as an example, the implementation process and effect of this patent are explained.

[0068] The first step is to set the application scenario to building shock absorption, the earthquake fortification level is 9, the corresponding earthquake acceleration value is 0.4g, and the amplitude is ±50mm.

[0069] (1) The rated load of the ball screw pair is 30 tons, the diameter of the screw section is 50 mm, the lead of the ball screw pair is 15 mm, and the screw stroke is 100 mm.

[0070] (2) The inner diameter of the inertial mass unit (outer diameter of the ball nut) is 90 mm, the outer diameter is 240 mm, and the length is 200 mm.

[0071] (3) The inner diameter of the cylinder is 240 mm, the wall thickness is 10 mm, and the length is 380 mm.

[0072] (4) The stator outer cylinder is 120 mm long, 250 mm in outer diameter, and 80 mm in inner diameter.

[0073] The second step is to determine the material of the components. The material of the cylinder, stator outer cylinder, inertia mass unit, and end cover is selected to be 40Cr alloy steel.

[0074] Step 3: Based on the design in step 1, process and prepare the following parts:

[0075] (1) Processing of inertia mass unit, left and right ball screw pairs, left and right cylinders, left and right end covers, and stator outer cylinder.

[0076] (2) Prepare the ball screw pair's ball nut (matching the machined ball screw), thrust bearing (matching the barrel's inner diameter), screw pump mechanism (stator and rotor), and required seals. The screw pump mechanism components (stator and rotor) are a G50 single-screw pump mechanism from a certain company. The pump shaft has a nominal outer diameter of 50 mm and a length of 140 mm.

[0077] Step 4: Install in the following order:

[0078] (1) Installation of the screw pump mechanism stator. Install the screw pump mechanism stator into the inner hole of the stator outer cylinder.

[0079] (2) Installation of the screw pump mechanism rotor. Install the screw pump mechanism rotor into the stator of the screw pump mechanism.

[0080] (3) Installation of ball nuts. Install the two ball nuts in the bottom holes of the two inertial mass units and tighten them.

[0081] (4) Connection between the rotor and the inertial mass unit. Connect the small ends of the left and right inertial mass units to the two ends of the screw pump mechanism rotor from both ends, keep them coaxial, and fix them with keys and keyways.

[0082] (5) Installation of seals. Install the seals in the sealing grooves of the left and right inertial mass units respectively.

[0083] (6) Installation of thrust bearings. Install the thrust bearings in the left and right cylinders.

[0084] (7) Installation of the left and right cylinders. Sleeve the left and right cylinders onto the left and right inertia mass units respectively, and connect them to the stator outer cylinder through threads.

[0085] (8) Insert the ball screw into the hole in the end cap and screw the screw section of the ball screw into the corresponding ball nut. Then connect the end cap to the left and right ends of the cylinder through threads. After the end cap is installed in place, tighten the thrust bearing.

[0086] (9) Installation of oil pipe: Inject hydraulic oil into the internal chamber of the device through the plug hole. After it is allowed to stand, install the external oil pipe and seal it.

[0087] After the above four steps, a screw pump type energy dissipation inertia capacity shock absorber is manufactured and installed. After the installation is completed, the device is tested to check whether it operates smoothly.

[0088] After the installation was completed, a vibration excitation test was carried out on the MTS tensile test system. The tensile force of the test machine was 25 tons, and the test frequencies were 1 and 2 respectively. The test results showed that the inertia capacity unit of a screw pump mechanism with energy dissipation and inertia reduction was operating normally, and the screw pump mechanism output pressure was 0.1-0.3MPa, and was able to operate normally.

[0089] By employing two inertial components, the present invention can absorb more external excitation energy. This energy is dissipated through the compression of the hydraulic oil during operation by the screw pump mechanism, and through the flow of hydraulic oil from the high-pressure chamber through the capillary tube to the low-pressure chamber. This solves the problem of the inertial container itself being unable to dissipate energy.

[0090] 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 screw pump type energy dissipation inertia shock absorber, characterized in that: The invention comprises a left cylinder (3) and a right cylinder (4) connected to each other, wherein the left cylinder (3) and the right cylinder (4) are provided with a screw pump mechanism, a left inertia system and a right inertia system; the left inertia system and the right inertia system are respectively connected to the screw pump mechanism, and the left inertia system and the right inertia system have the same size and structure and are symmetrically arranged with the screw pump mechanism; a left chamber (7) and a right chamber (8) are formed between the left inertia system and the right inertia system, the screw pump mechanism and the left cylinder (3) and the right cylinder (4); the left chamber (7) and the right chamber (8) are communicated through an oil pipe (13) ; The left inertial capacity system and the right inertial capacity system both include an end cover, an inertial capacity mass unit and a ball screw pair; the ball screw pair includes a ball screw and a ball nut; the inertial capacity mass unit adopts a cylindrical cone complex; the cylindrical cone complexes of the two inertial capacity mass units of the left inertial capacity system and the right inertial capacity system are respectively connected to the screw pump mechanism and are symmetrically arranged with the screw pump mechanism; a ball nut (9) is provided in the inertial capacity mass unit, one end of the ball screw is arranged outside the end cover and connected to the end anchor, and the other end of the ball screw passes through the end cover and is connected to the ball nut (9).

2. A screw pump type energy dissipation inertia shock absorber according to claim 1, characterized in that: A thrust bearing is provided between the end cover and the inertia mass unit, one end of the ball screw is arranged outside the end cover and connected to the end anchor, and the other end of the ball screw passes through the end cover and the thrust bearing and is connected to the ball nut (9).

3. The screw pump type energy dissipation inertia shock absorber according to claim 1, characterized in that: The screw pump mechanism comprises a screw pump mechanism stator (14) and a screw pump mechanism rotor (12), wherein the screw pump mechanism stator (14) is arranged in a cylindrical stator outer tube (15), and the screw pump mechanism rotor (12) is arranged in the screw pump mechanism stator (14), and the two ends of the screw pump mechanism rotor (12) are respectively connected to the cylindrical cone complex of the two inertial mass units of the left inertial system and the right inertial system.

4. The screw pump type energy dissipation inertia shock absorber according to claim 3, characterized in that: The left cylinder (3) and the right cylinder (4) are provided with internal threads, the outer wall of the stator outer cylinder (15) is provided with external threads matching the internal threads of the left cylinder (3) and the right cylinder (4), and the left cylinder (3) and the right cylinder (4) are connected to the stator outer cylinder (15) through threads.

5. The screw pump type energy dissipation inertia shock absorber according to claim 1, characterized in that: The threads on the two ball screws of the left inertial system and the right inertial system rotate in opposite directions.

6. The screw pump type energy dissipation inertia shock absorber according to claim 1, characterized in that: Seals are provided between the left inertial mass unit (5), the right inertial mass unit (6), the left cylinder (3), and the right cylinder (4).

7. The screw pump type energy dissipation inertia shock absorber according to claim 6, characterized in that: The sealing member includes a sealing member 1 (2) and a sealing member 2 (16).

8. The screw pump type energy dissipation inertia shock absorber according to claim 5, characterized in that: The end cap is a hollow cylinder, one end of the end cap is a planar structure, the other end of the end cap is a ring end, and the ring end is provided with an external thread. The two end caps are respectively connected to the left cylinder (3) and the right cylinder (4) through threads.

9. An application method of the screw pump type energy dissipation inertia shock absorber according to claim 1, characterized in that: The details are as follows: When the ball screw pairs are relatively advanced, axial external vibration excitation is applied to the device through the end anchors. After being subjected to force, the ball screws at both ends of the device are relatively advanced, driving the inertial mass unit to rotate through the ball nuts. The rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate. The rotation of the screw pump mechanism rotor compresses the hydraulic oil in the screw pump mechanism and pushes it to one chamber, while sucking hydraulic oil from the other chamber. The oil pressure in the chamber receiving oil increases, and the hydraulic oil in the chamber flows into the other chamber through the external oil pipe. The operation of the screw pump mechanism and the flow of hydraulic oil from the high-pressure chamber to the low-pressure chamber through the oil pipe consume the energy transmitted by the inertial system. When the ball screw pair relatively retreats, the direction of the external vibration excitation changes. The ball screws at both ends, under force, retreat relative to each other, driving the inertial mass unit to rotate in the opposite direction via the ball nut. The reverse rotation of the inertial mass unit drives the rotor of the screw pump mechanism in the middle to rotate in the opposite direction. As the rotor of the screw pump mechanism rotates in the opposite direction, the hydraulic oil in the device circulates in the opposite direction to the above, and this process also consumes the energy transmitted by the inertial system. Through the continuous alternation of the above two processes, a screw pump type energy dissipation inertia shock absorber continuously absorbs and consumes energy to achieve the energy dissipation and shock reduction function.

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