A shear thickening fluid damper

Abstract

The application relates to a shear thickening fluid damper, which belongs to the technical field of dampers. The shear thickening fluid damper comprises an inner cylinder, an outer cylinder, a piston rod, a one-way valve and a moving suction device. The inner cylinder is arranged in the outer cylinder. The one-way valve is arranged between the outer periphery of the bottom of the inner cylinder and the outer cylinder. The upper part of the one-way valve is filled with nitrogen or shear thickening fluid, and the lower part of the one-way valve is filled with shear thickening fluid. The inner cylinder is filled with silicon oil. The piston rod is a double-rod type or a single-rod type. The piston is arranged in the inner cylinder. The piston rod is arranged to extend out of the inner cylinder and the outer cylinder at two ends or one end. The piston rod moves up and down in the inner cylinder. The moving suction device is symmetrically arranged in the inner cylinder at two ends of the piston rod. When the external load is small, the moving suction device connects the inner cylinder and the outer cylinder as a whole. The piston rod moves in the inner cylinder. The silicon oil is extruded and sheared to absorb energy. When the load is too large, the moving suction device separates the inner cylinder and the outer cylinder. The inner cylinder is driven to move downwards by the piston rod. The shear thickening fluid in the lower cavity of the outer sleeve is extruded and sheared to be shear thickened, so that energy is dissipated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of dampers, in particular to an energy-absorbing shear thickening liquid damper on an automobile crash beam. BACKGROUND

[0002] Shear thickening liquid is a kind of energy-consuming fluid, when subjected to external load, the viscosity rises sharply, and when the external force is removed, the viscosity can quickly recover. The shear thickening liquid damper has high energy consumption and fast response speed, and is a passive damping device that can effectively reduce vibration and absorb energy for the structure.

[0003] At present, the viscous damper adopts a double-out-rod structure, and the length of the double-out-rod damper is longer than that of the single-out-rod damper under the premise of setting the stroke, especially when the set stroke is large, this situation is particularly obvious. Limited by the installation space, the double-out-rod viscous damper cannot be installed.

[0004] The current viscous damper generates heat inside the friction when working, which causes the temperature of the damper to rise, which affects the viscous characteristics and performance of the damper and shortens the service life of the equipment.

[0005] Therefore, it is urgent to invent a shear thickening liquid damper that can adopt a double-out-rod or single-out-rod type according to the use conditions and has a heat absorption device to effectively reduce the influence of temperature on the performance of the damper. SUMMARY

[0006] In view of the above technical problems, the application provides a shear thickening liquid damper.

[0007] The purpose of the application is achieved by the following technical solutions:

[0008] The application has three different schemes:

[0009] Scheme one: a shear thickening liquid damper, comprising an inner cylinder, an outer cylinder, a piston rod, a one-way valve and a moving suction device, the inner cylinder is placed in the outer cylinder, a one-way valve is sleeved between the outer periphery of the bottom of the inner cylinder and the outer cylinder, the piston rod is a double-out-rod type, the piston is placed in the inner cylinder, and the two ends of the piston rod respectively extend out of the inner cylinder and the outer cylinder and move up and down in the inner cylinder; shear thickening liquid is filled between the bottom of the outer cylinder and the inner cylinder and the one-way valve, nitrogen is filled between the upper part of the outer cylinder and the inner cylinder and the one-way valve, silicon oil is filled in the inner cylinder, and the moving suction device is symmetrically arranged at both ends of the inner cylinder with respect to the piston rod, and the moving suction device connects the inner cylinder and the outer cylinder or connects the inner cylinder and the piston rod as a whole.

[0010] Scheme two: a shear thickening fluid damper, comprising an inner cylinder, an outer cylinder, a piston rod, a one-way valve, a moving suction device, the inner cylinder is placed in the outer cylinder, a one-way valve is placed between the outer periphery of the bottom of the inner cylinder and the outer cylinder, the piston rod is a single rod type, the piston is placed in the inner cylinder, the piston rod extends out of one end of the inner cylinder and the outer cylinder respectively, and moves up and down in the inner cylinder; a shear thickening fluid is filled between the bottom of the outer cylinder and the inner cylinder and the one-way valve, nitrogen is filled between the upper part of the outer cylinder and the inner cylinder and the one-way valve, silicon oil is filled in the inner cylinder, and the moving suction device is symmetrically arranged in the one end of the inner cylinder extending out of the piston rod, and the inner cylinder and the outer cylinder or the inner cylinder and the piston rod are connected as a whole through the moving suction device.

[0011] Scheme three: a shear thickening fluid damper, comprising an inner cylinder, an outer cylinder, a piston rod, a one-way valve, a moving suction device, the inner cylinder is placed in the outer cylinder, the piston rod is a double rod type, the piston is placed in the inner cylinder, and the piston rod extends out of both ends of the inner cylinder and the outer cylinder respectively, and moves up and down in the inner cylinder; a shear thickening fluid is filled between the outer cylinder and the inner cylinder, silicon oil is filled in the inner cylinder, and the moving suction device is symmetrically arranged in the inner cylinder at both ends of the piston rod, and the inner cylinder and the outer cylinder or the inner cylinder and the piston rod are connected as a whole through the moving suction device.

[0012] Further, the moving suction device is installed in a sliding groove opened on the inner cylinder, and comprises a magnet of an energized coil and rod-shaped magnets symmetrically arranged at both ends of the magnet of the energized coil, the magnet of the energized coil changes the magnetic poles at both ends to generate a force with the rod-shaped magnets, and the rod-shaped magnets at both ends and the magnet of the energized coil slide out of or retract into the sliding groove to be in contact with the inner wall of the outer cylinder or the outer periphery of the piston rod respectively, and are connected as a whole.

[0013] Further, the inner wall of the outer cylinder and the outer periphery of the piston rod are both provided with grooves, and the rod-shaped magnets are connected as a whole with the inner wall of the outer cylinder or the outer periphery of the piston rod through the grooves.

[0014] Further, the end part of the rod-shaped magnet close to the end of the outer cylinder and the piston rod is provided with a high-elasticity sealing head.

[0015] Further, a sealing ring is arranged between the outer cylinder and the piston rod, and between the inner cylinder and the piston rod.

[0016] The beneficial effects of the present application are:

[0017] 1. A shear thickening fluid damper according to the present application, which adopts a double cylinder structure, the outer cylinder is divided into upper and lower parts by a one-way valve, the upper part is filled with nitrogen for absorbing the heat generated in the cavity, and the lower part is filled with shear thickening fluid, the inner cylinder is filled with silicone oil, the piston rod is double or single, the piston is arranged in the inner cylinder, and the piston rod extends out of the inner cylinder and the outer cylinder at both ends or one end, and moves up and down in the inner cylinder; a moving suction device is symmetrically arranged in the inner cylinder at both ends of the piston rod. When the external load is small, the moving suction device connects the inner and outer cylinders as a whole, the piston rod moves in the inner cylinder, and the silicone oil absorbs energy by being squeezed and sheared; when the load is too large, the moving suction device separates the inner and outer cylinders, the inner cylinder is driven downward by the piston rod, and the shear thickening fluid in the lower cavity of the outer sleeve is squeezed and sheared to generate shear thickening and dissipate energy.

[0018] 2. The moving suction device according to the present application is installed in the sliding groove opened in the inner cylinder, rod-shaped magnets are symmetrically arranged at both ends of the power coil magnet in the sliding groove, the power coil magnet changes the magnetic poles at both ends to generate force with the rod-shaped magnets; when the external load is small, the inner and outer cylinders are connected as a whole, the piston rod moves in the inner cylinder, and the silicone oil absorbs energy by being squeezed and sheared; when the load is too large, the power coil magnet changes the current direction, the magnetic poles are changed, the rod-shaped magnets connected with the outer cylinder move to the side of the inner cylinder through magnetic action, the inner and outer cylinders are separated, and the piston can drive the entire inner cylinder to move downward, so that the shear thickening fluid in the lower cavity is squeezed and sheared to generate shear thickening and dissipate energy.

[0019] 3. The nitrogen filled in the outer cylinder according to the present application is used for absorbing the heat generated in the damper during operation, and can reduce the influence of high temperature on the shear thickening fluid.

[0020] 4. The two-stage energy absorption method according to the present application is used for the silicone oil in the inner cylinder and the shear thickening fluid in the lower part, and can effectively reduce vibration and absorb energy. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural cross-sectional view of an embodiment 1 of the present application.

[0022] Figure 2 FIG. 2 is a structural cross-sectional view of an embodiment 2 of the present application.

[0023] Figure 3 FIG. 3 is a structural cross-sectional view of an embodiment 3 of the present application.

[0024] Figure 4 FIG. 4 is an installation state diagram of the power coil magnet and the rod-shaped magnet according to the present application.

[0025] In the diagram: 1. Piston rod, 2. Sealing ring, 3. Outer cylinder, 4. Nitrogen gas, 5. Rod magnet, 51. Rod magnet near the outer cylinder end, 52. Rod magnet near the piston rod end, 6. Energized coil magnet, 7. Inner cylinder, 8. Silicone oil, 9. One-way valve, 10. Shear thickening fluid, 11. Energized coil, 12. High-elasticity sealing head. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Example 1: As Figure 1 As shown, the present invention discloses a shear thickening liquid dual-cylinder damper, comprising an inner cylinder 7, an outer cylinder 3, a piston rod 1, a one-way valve 9, and a movable suction device. The inner cylinder 7 is placed inside the outer cylinder 3. A one-way valve 9 is provided between the bottom outer periphery of the inner cylinder 7 and the outer cylinder 3, and the one-way valve 9 is sleeved on the outer periphery of the inner cylinder 7. The piston rod 1 is a double-outlet type, with its piston placed inside the inner cylinder 7 and the two piston rods 1 extending out of the inner cylinder 7 and the outer cylinder 3 respectively, moving up and down in the inner cylinder 7. A shear thickening liquid 10 is filled between the bottom of the outer cylinder 3 and the inner cylinder 7 and the one-way valve 9. When under pressure, the one-way valve 9 opens a channel with a certain gap to facilitate the flow of the shear thickening liquid 10. Nitrogen gas 4 is filled between the upper part of the outer cylinder 3 and the inner cylinder 7 and the one-way valve 9. Silicone oil 8 is filled inside the inner cylinder 7. Movable suction devices are symmetrically arranged at the upper and lower ends of the inner cylinder 7 with respect to the piston rod 1. The movable suction devices connect the inner cylinder 7 and the outer cylinder 3 or connect the inner cylinder 7 and the piston rod 1 into one unit.

[0028] like Figure 1 As shown, in this example, nitrogen gas 4 fills the outer cylinder 3 to absorb the heat generated inside the damper during operation, reducing the impact of high temperature on the shear thickening fluid 10. Silicone oil 8 fills the inner cylinder 7, and the piston is located in the inner cylinder 7. When an external force is applied, the piston rod 1 drives the piston downward. When the one-way valve 9 is closed, it separates the shear thickening fluid 10 from the nitrogen gas 4. When it is open, the shear thickening fluid 10 can flow into the outer cylinder 3. When the one-way valve 9 is open, the shear thickening fluid 10 can only flow towards the nitrogen gas in the upper part of the outer cylinder and cannot flow back.

[0029] like Figure 1 , Figure 4 As shown, the movable suction device is installed in a groove on the inner cylinder 7, including an energized coil magnet 6 and two symmetrically arranged rod magnets 5 at its ends, both located within the groove. In this example, the S poles of the two rod magnets 5 are close to the inner cylinder 7 and the piston rod 1, respectively. By changing the magnetic poles at both ends through the energized coil magnet 6, a force is generated between the rod magnets 5 and the inner cylinder 3. The rod magnets 5 and the energized coil magnet 6 slide along the groove, extending or retracting into it, respectively, and making contact with the inner wall of the outer cylinder 3 or the outer periphery of the piston rod 1, thus forming a single unit. Both the inner wall of the outer cylinder 3 and the outer periphery of the piston rod 1 have grooves, allowing the rod magnets 5 to contact and connect with the inner wall of the outer cylinder 3 or the outer periphery of the piston rod 1 through these grooves.

[0030] High-elasticity sealing heads 12 are provided at the ends of the rod-shaped magnets 5 near the outer cylinder 3 and the piston rod 1. Sealing rings are provided between the outer cylinder 3 and the piston rod 1, and between the inner cylinder 7 and the piston rod 1.

[0031] In this example, during work, such as Figure 4 The diagram shows the installation state of the energized coil magnet 6 and the rod magnet 5. At this time, the current direction indicated by the energized coil 11 causes the energized coil magnet 6 to have its N pole near the outer cylinder 3, repelling the rod magnet 51 near the outer cylinder 3. This causes the rod magnet 51 near the outer cylinder 3 to extend along the inner cylinder 7's groove and enter the inner wall groove of the outer cylinder 3, connecting with the outer cylinder 3 through the high-elasticity sealing head 12, thus connecting the inner cylinder 7 and the outer cylinder 3 as a whole. The energized coil magnet 6 has its S pole near the piston rod 1, attracting the rod magnet 52 near the piston rod 1, causing the rod magnet 52 near the piston rod 1 to separate from the groove of the piston rod 1. At this time, the damper is used to push... The silicone oil 4 inside the inner cylinder 7 dissipates energy under small loads. When the current direction changes, the magnet 6 of the energized coil, which is near the S pole of the outer cylinder 3, attracts the rod magnet 51 near the outer cylinder 3. The rod magnet 51 near the outer cylinder 3 moves towards the inner cylinder 7 and retracts into the groove, disconnecting the inner cylinder 7 from the outer cylinder 3. The rod magnet 52 near the piston rod 1 is repelled and connected to the inner cylinder 7 as a whole through the groove of the high-elasticity sealing head 12. This allows the piston rod 1 to move the entire inner cylinder 7 downwards when the damper is under a large load, causing the shear thickening liquid in the lower part of the outer cylinder 3 to undergo shear thickening, dissipating energy and achieving a buffering effect.

[0032] like Figure 1 As shown, when the external load is too large, the piston rod 1 is not enough to absorb all the energy when it moves in the inner cylinder 7. The direction of the current in the energized coil magnet 6 changes, and the magnetic poles at both ends change, so that the piston rod 1 is connected to the rod magnet 52 near the piston rod end to form a whole. The piston rod 1 continues to move downward, pushing the entire inner cylinder 7 to move downward. At this time, the shear thickening liquid is squeezed and sheared, and flows into the outer cylinder 3 through the one-way valve 9, where shear thickening occurs, thus absorbing energy for the structure.

[0033] Example 2: As Figure 2As shown, this example differs from Example 1 in that the piston rod 1 in this example adopts a single-outlet rod type, which facilitates the installation of the damper. Specifically, it includes an inner cylinder 7, an outer cylinder 3, a piston rod 1, a one-way valve 9, and a movable suction device. The inner cylinder 7 is placed inside the outer cylinder 3. A one-way valve 9 is provided between the bottom outer circumference of the inner cylinder 7 and the outer cylinder 3. The one-way valve 9 is sleeved on the outer circumference of the inner cylinder 7. The piston of the piston rod 1 is placed inside the inner cylinder. The piston rod 1 extends out of the inner cylinder 7 and one end of the outer cylinder 3, and moves up and down in the inner cylinder 7. A shear thickening liquid 10 is filled between the bottom of the outer cylinder 3 and the inner cylinder 7 and the one-way valve 9. Nitrogen gas 4 is filled between the upper part of the outer cylinder 3 and the inner cylinder 7 and the one-way valve 9. Silicone oil 8 is filled inside the inner cylinder 7. Movable suction devices are symmetrically arranged on the piston rod 1 at the end of the inner cylinder 7 that extends out of the piston rod 1. The inner cylinder 7 and the outer cylinder 3 are connected by the movable suction devices, or the inner cylinder 7 and the piston rod 1 are connected as a whole.

[0034] The movable suction device described in this example has the same structure as that in Embodiment 1. A groove is opened in the inner cylinder 7 at the end of the piston rod 1 that extends outwards, and the movable suction device is placed in the groove. By changing the magnetic poles at both ends of the energized coil magnet 6, a force is generated with the rod magnet 5. The rod magnet 5 and the energized coil magnet 6 at both ends slide outwards or retract into the groove along the groove, respectively making contact with the inner wall of the outer cylinder 3 or the outer periphery of the piston rod 1, and are respectively connected to form a whole.

[0035] Example 3: As Figure 3 As shown, this example differs from Example 1 in that the outer cylinder 3 of the damper in this example is not filled with nitrogen, but is completely filled with shear thickening liquid 10. It includes an inner cylinder 7, an outer cylinder 3, a piston rod 1, a one-way valve 9, and a movable suction device. The inner cylinder 7 is placed inside the outer cylinder 3. The piston rod 1 is a double-outlet type, with its piston placed inside the inner cylinder 7. The two ends of the piston rod 1 extend from the inner cylinder 7 and the outer cylinder 3 respectively, moving up and down within the inner cylinder 7. The shear thickening liquid 10 is filled between the outer cylinder 3 and the inner cylinder 7, and silicone oil 4 is filled inside the inner cylinder 7. Movable suction devices are symmetrically arranged at the upper and lower ends of the inner cylinder 7, opposite to the piston rod 1. These movable suction devices connect the inner cylinder 7 and the outer cylinder 3, or connect the inner cylinder 7 and the piston rod 1 as a single unit. The movable suction device in this example has the same structure as in Example 1.

[0036] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. A shear thickening fluid damper, characterized by: The application relates to a damper, which comprises an inner cylinder, an outer cylinder, a piston rod, a one-way valve and mobile suction devices, the inner cylinder is arranged in the outer cylinder, the one-way valve is arranged between the outer periphery of the bottom of the inner cylinder and the outer cylinder, the piston rod is a double-end piston rod, the piston is arranged in the inner cylinder, the two ends of the piston rod respectively extend out of the inner cylinder and the outer cylinder and move up and down in the inner cylinder, a shear thickening liquid is filled between the bottom of the outer cylinder and the inner cylinder and the one-way valve, nitrogen is filled between the upper part of the outer cylinder and the inner cylinder and the one-way valve, silicon oil is filled in the inner cylinder, the mobile suction devices are symmetrically arranged at the upper and lower ends of the inner cylinder and are connected with the inner cylinder and the outer cylinder or the inner cylinder and the piston rod; the mobile suction devices are arranged in the sliding grooves of the inner cylinder and comprise a magnet of an energized coil and rod-shaped magnets symmetrically arranged at the two ends of the magnet of the energized coil, the magnet of the energized coil changes the magnetic poles at the two ends and generates force with the rod-shaped magnets, the rod-shaped magnets at the two ends and the magnet of the energized coil slide out of the sliding grooves or retract into the sliding grooves and are respectively matched with the inner wall of the outer cylinder or the outer periphery of the piston rod and are connected into a whole, the current direction of the magnet of the energized coil repels the rod-shaped magnet close to the outer cylinder end, the rod-shaped magnet close to the outer cylinder end slides out of the sliding groove of the inner cylinder and is matched with the inner wall of the outer cylinder and connected into a whole, the magnet of the energized coil attracts the rod-shaped magnet close to the piston rod end and separates the rod-shaped magnet close to the piston rod end from the piston rod, at this moment, the damper is used for pushing the silicon oil in the inner cylinder and dissipating the energy of small loads; when the current direction is changed, the magnet of the energized coil attracts the rod-shaped magnet close to the outer cylinder end, the rod-shaped magnet close to the outer cylinder end moves to the inner cylinder side and retracts into the sliding groove, the inner cylinder is disconnected from the outer cylinder, the rod-shaped magnet close to the piston rod end is repelled and connects the piston rod with the inner cylinder, and the piston rod drives the whole inner cylinder to move downwards; the inner wall of the outer cylinder and the outer periphery of the piston rod are provided with grooves, and the rod-shaped magnets are matched with the inner wall of the outer cylinder or the outer periphery of the piston rod through the grooves and connected into a whole.

2. A shear thickening fluid damper, characterized by: The damper comprises an inner cylinder, an outer cylinder, a piston rod, a one-way valve and mobile suction devices. The inner cylinder is arranged in the outer cylinder, and the one-way valve is arranged between the outer periphery of the bottom of the inner cylinder and the outer cylinder. The piston rod is single-out rod type, and the piston is arranged in the inner cylinder. The piston rod extends out of one end of the inner cylinder and the outer cylinder respectively and moves up and down in the inner cylinder. The shear thickening liquid is filled between the bottom of the outer cylinder and the inner cylinder and the one-way valve, and the nitrogen is filled between the upper part of the outer cylinder and the inner cylinder and the one-way valve. The silicon oil is filled in the inner cylinder, and the mobile suction devices are symmetrically arranged in the one end of the piston rod extending out of the inner cylinder. The inner cylinder and the outer cylinder or the inner cylinder and the piston rod are connected by the mobile suction devices. The mobile suction devices are installed in the sliding groove opened in the inner cylinder and comprise a magnet of an energized coil and rod-shaped magnets symmetrically arranged at two ends of the magnet of the energized coil. The magnet of the energized coil changes the magnetic poles at two ends and generates force with the rod-shaped magnets. The rod-shaped magnets at two ends and the magnet of the energized coil slide out of or retract into the sliding groove and are in contact with the inner wall of the outer cylinder or the outer periphery of the piston rod respectively and are connected into an integral whole. When the current direction of the energized coil makes the magnet of the energized coil and the rod-shaped magnet close to the end of the outer cylinder repel each other, the rod-shaped magnet close to the end of the outer cylinder slides out of the sliding groove of the inner cylinder, is in contact with the inner wall of the outer cylinder and is connected into an integral whole. When the magnet of the energized coil and the rod-shaped magnet close to the end of the piston rod attract each other, the rod-shaped magnet close to the end of the piston rod is separated from the piston rod. At this time, the damper is used to push the silicon oil in the inner cylinder and dissipate the energy of small load. When the current direction is changed, the magnet of the energized coil and the rod-shaped magnet close to the end of the outer cylinder attract each other. The rod-shaped magnet close to the end of the outer cylinder moves to the side of the inner cylinder and retracts into the sliding groove. The inner cylinder and the outer cylinder are disconnected, the rod-shaped magnet close to the end of the piston rod is repelled and connects the piston rod and the inner cylinder into an integral whole. The piston rod drives the whole inner cylinder to move downward. The inner wall of the outer cylinder and the outer periphery of the piston rod are provided with grooves. The rod-shaped magnets are in contact with the inner wall of the outer cylinder or the outer periphery of the piston rod through the grooves and are connected into an integral whole.

3. A shear thickening fluid damper, characterized by: The device comprises an inner cylinder, an outer cylinder, a piston rod, a one-way valve and a moving suction device. The inner cylinder is placed in the outer cylinder. The piston rod is double-ended, and the piston is placed in the inner cylinder. The two ends of the piston rod extend out of the inner cylinder and the outer cylinder, and move up and down in the inner cylinder. The space between the outer cylinder and the inner cylinder is filled with a shear thickening liquid, and the inner cylinder is filled with silicone oil. The moving suction device is symmetrically arranged at the two ends of the inner cylinder. The moving suction device is installed in a sliding groove on the inner cylinder, and comprises a magnet with an energized coil and two rod-shaped magnets symmetrically arranged at the two ends of the magnet. The magnet with an energized coil changes the magnetic poles at the two ends, and generates a force with the rod-shaped magnets. The two rod-shaped magnets and the magnet with an energized coil slide along the sliding groove, extend out of the sliding groove or retract into the sliding groove, and are in contact with the inner wall of the outer cylinder or the outer periphery of the piston rod, respectively, and are connected into one body. When the current direction of the magnet with an energized coil repels the rod-shaped magnet close to the outer cylinder, the rod-shaped magnet close to the outer cylinder extends out of the sliding groove of the inner cylinder, is in contact with the inner wall of the outer cylinder, and is connected into one body. When the magnet with an energized coil attracts the rod-shaped magnet close to the piston rod, the rod-shaped magnet close to the piston rod is separated from the piston rod. At this time, the damper is used to push the silicone oil in the inner cylinder, and dissipate the energy of small loads. When the current direction is changed, the magnet with an energized coil attracts the rod-shaped magnet close to the outer cylinder, and the rod-shaped magnet close to the outer cylinder retracts into the sliding groove on the inner cylinder, and the inner cylinder is disconnected from the outer cylinder. The rod-shaped magnet close to the piston rod is repelled, and the piston rod is connected with the inner cylinder as a whole. The piston rod drives the entire inner cylinder to move downward. The outer wall of the outer cylinder and the outer periphery of the piston rod are provided with grooves, and the rod-shaped magnets are connected with the outer wall of the outer cylinder or the outer periphery of the piston rod through the grooves.

4. The shear thickening liquid damper according to any one of claims 1-3, wherein: The end of the rod-shaped magnet close to the outer cylinder and the piston rod is provided with a high-elasticity sealing head.

5. The shear thickening liquid damper according to any one of claims 1-3, wherein: Sealing rings are arranged between the outer cylinder and the piston rod, and between the inner cylinder and the piston rod.

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