A variable damping semi-active damper

Abstract

The invention discloses a variable damping semi-active damper, comprising a sleeve component, a screw component, a brake disc, a damping component, a hydraulic control component and a speed sensing component; the screw component is arranged in the sleeve component; the brake disc is connected to the screw component; the damping component and the brake disc form a friction pair to generate a damping force; the hydraulic control component comprises an electromagnetic valve, a piston, and a hydraulic cylinder, and the piston is connected to the damping component; the speed sensing component comprises a magnetic component and an induction mechanism, the magnetic component rotates synchronously with the brake disc, generates electromagnetic induction with the induction mechanism, and the generated current is input into the electromagnetic valve; external force causes the screw component of the variable damping semi-active damper to drive the brake disc to rotate, and the rotation speed of the brake disc is converted into an electric potential by the speed sensing component to open the electromagnetic valve, thereby adjusting the pressure in the hydraulic cylinder to drive the piston to move, and adjusting the pressure between the brake disc and the damping component, so that the brake disc and the damping component generate different friction forces, and variable damping is generated for the external loading speed.

Description

Technical Field

[0001] The invention relates to the technical field of structural vibration reduction, and in particular to a variable damping semi-active damper. Background Art

[0002] The damper can provide a semi-active damping force, effectively reducing the vibration response of the structure and greatly improving the seismic performance of the structure. However, the traditional damper is not energy efficient, and the traditional damper has a single control function. It cannot cope with different types of vibration inputs within a limited volume. The traditional damper protection function is not comprehensive and can no longer meet the performance requirements of modern structural vibration control. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a variable damping semi-active damper that can provide variable damping force to cope with external loads in different situations and provide comprehensive seismic resistance in a limited volume.

[0004] According to a first aspect of the present invention, there is provided a variable damping semi-active damper, comprising a sleeve component, a screw component, a brake disc, a damping component, a hydraulic control component and a speed sensing component; wherein the screw component is slidably arranged in the sleeve component; wherein the brake disc is arranged in the sleeve component, the brake disc is connected to the screw component, and the screw component drives the brake disc to rotate; wherein the damping component is arranged in the sleeve component, and when the screw component drives the brake disc to rotate, the brake disc and the damping component form a friction pair and generate a damping force; wherein the hydraulic control component is arranged in the sleeve component, the hydraulic control component comprises a solenoid valve, a piston and a hydraulic cylinder, and the piston is connected to the damping component; wherein the speed sensing component is arranged in the sleeve component, the speed sensing component comprises a magnetic component and an induction mechanism, the magnetic component is arranged on the brake disc, the magnetic component rotates synchronously with the brake disc, and when the magnetic component rotates, the induction mechanism generates electromagnetic induction, and the generated induced current is input into the hydraulic control component, the solenoid valve is opened, the liquid pressure in the hydraulic cylinder is increased, and the pressure of the piston on the damping component is increased, thereby enhancing the damping force between the brake disc and the damping component.

[0005] Beneficial effect: This variable damping semi-active damper senses the action of external force through the screw component. When the screw component and the sleeve component undergo relative linear motion, the screw component drives the brake disc to rotate, and the brake disc and the damping component form a friction pair to consume energy. At the same time, the rotation speed of the brake disc will be converted into an electric potential by the speed sensing component, thereby controlling the opening of the solenoid valve, increasing the liquid pressure in the hydraulic cylinder, driving the piston to move and adjusting the pressure between the brake disc and the damping component, generating different damping for external loads of different speeds, and providing comprehensive anti-seismic performance within a limited volume.

[0006] The variable damping semi-active damper according to the first aspect of the embodiment of the present invention further includes an oil storage tank and an oil pipe. The oil storage tank is arranged in the sleeve component. The oil storage tank is connected to the hydraulic cylinder through the oil pipe. The solenoid valve controls the connectivity of the oil pipe.

[0007] According to the variable damping semi-active damper of the first embodiment of the present invention, the hydraulic control component further includes a fixing seat, and the hydraulic cylinder and the piston are both arranged on the fixing seat.

[0008] According to the variable damping semi-active damper of the first aspect of the present invention, two groups of magnetic components are arranged, and each magnetic component is arranged on both sides of the brake disc respectively. The induction mechanism includes a left-wound coil and a right-wound coil. The left-wound coil is provided with a left stator, and the right-wound coil is provided with a right stator. The left-wound coil and the right-wound coil generate electromagnetic induction with each magnetic component respectively.

[0009] According to the variable damping semi-active damper of the first embodiment of the present invention, the damping component is a friction plate, and the friction plate is arranged on both sides of the brake disc.

[0010] According to the variable damping semi-active damper of the first embodiment of the present invention, the screw rod component includes a ball nut and a screw rod, the ball nut is arranged on the screw rod, the screw rod drives the ball nut to rotate, and the ball nut is connected to the brake disc.

[0011] According to the variable damping semi-active damper of the first embodiment of the present invention, one end of the screw rod extends into the sleeve component, and the other end of the screw rod is provided with a first earring.

[0012] According to the variable damping semi-active damper of the first embodiment of the present invention, one end of the sleeve component is provided with a hole capable of accommodating the screw rod, and the other end of the sleeve component is provided with a second earring.

[0013] According to the variable damping semi-active damper of the embodiment of the first aspect of the present invention, a limit block is provided at one end of the screw rod, and a limit plate matching the limit block is provided in the sleeve component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0016] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] Reference Figure 1A variable damping semi-active damper comprises a sleeve component 10, a screw component 20, a brake disc 60, a damping component 50, a hydraulic control component and a speed sensing component; wherein the screw component 20 is slidably arranged in the sleeve component 10, and the sleeve component 10 and the screw component 20 undergo relative linear motion; wherein the brake disc 60 is arranged in the sleeve component 10, the brake disc 60 is connected to the screw component 20, and the screw component 20 drives the brake disc 60 to rotate; wherein a plurality of damping components 50 are arranged in the sleeve component 10, and when the screw component 20 drives the brake disc 60 to rotate, the brake disc 60 and the damping component 50 form a friction pair and generate a damping force; wherein the hydraulic control component is arranged in the sleeve component 10, and the hydraulic control component comprises a solenoid valve 33, piston 32 and hydraulic cylinder 311, the piston 32 is connected to the damping component 50; wherein the speed sensing component is arranged in the sleeve component 10, the speed sensing component includes a magnetic component 42 and a sensing mechanism 41, the magnetic component 42 is arranged on the brake disc 60, the magnetic component 42 and the brake disc 60 rotate synchronously, the sensing mechanism 41 is always located near the rotation path of the magnetic component 42, the magnetic component 42 and the sensing mechanism 41 are electromagnetically induced, the generated induced current is input into the hydraulic control component, the solenoid valve 33 is opened, preferably a wire is electrically connected to the solenoid valve 33, the liquid pressure in the hydraulic cylinder 311 is increased, the pressure of the piston 32 on the damping component 50 is increased, thereby enhancing the damping force between the brake disc 60 and the damping component 50. This variable damping semi-active damper senses the action of external force through the screw component 20. When the screw component 20 and the sleeve component 10 undergo relative linear motion, the screw component 20 drives the brake disc 60 to rotate. The brake disc 60 and the damping component 50 form a friction pair to consume energy. At the same time, the rotation speed of the brake disc 60 will be converted into an electric potential by the speed sensing component, thereby controlling the opening of the solenoid valve 33, increasing the liquid pressure in the hydraulic cylinder 311, driving the piston 32 to move and adjust the pressure between the brake disc 60 and the damping component 50, generating different damping for different speeds of external loads, and providing comprehensive anti-seismic performance in a limited volume.

[0021] Specifically, as the rotation speed of the brake disc 60 increases, the induced current generated by the electromagnetic induction between the magnetic component 42 and the induction mechanism 41 will increase, thereby increasing the liquid pressure of the hydraulic cylinder 311 and the thrust of the piston 32, thereby increasing the pressure between the damping component 50 and the brake disc 60. The increased pressure increases the friction force, and ultimately increases the damping force between the brake disc 60 and the damping component 50, allowing this variable damping semi-active damper to better consume energy.

[0022] In this embodiment, an oil storage tank 31 and an oil pipe 312 are also included. Hydraulic oil is provided in the oil storage tank 31. The oil storage tank 31 is arranged in the sleeve component 10. The oil storage tank 31 is connected to the hydraulic cylinder 311 through the oil pipe 312. The solenoid valve 33 controls the communication of the oil pipe 312. The hydraulic system can provide more stable and stronger thrust, and can greatly improve the energy consumption rate.

[0023] In this embodiment, the hydraulic control component further includes a fixing seat 34, and the hydraulic cylinder 311 and the piston 32 are both arranged on the fixing seat 34. The fixing seat 34 is arranged outside the side wall of the brake disc 60 to prevent the hydraulic control component from affecting the rotation of the brake disc 60.

[0024] In this embodiment, two groups of magnetic components 42 are provided, and each magnetic component 42 is respectively provided on both sides of the brake disc 60. The induction mechanism 41 includes a left-wound coil and a right-wound coil. A left stator is provided on the left-wound coil, and a right stator is provided on the right-wound coil. The left-wound coil and the right-wound coil generate electromagnetic induction with each magnetic component 42. Specifically, the magnetic component 42 is a magnet.

[0025] In this embodiment, the damping component 50 is a friction plate, and the friction plate is arranged on both sides of the brake disc 60 .

[0026] In this embodiment, the screw component 20 includes a ball nut 22 and a screw 21. The ball nut 22 is arranged on the screw 21. The screw 21 drives the ball nut 22 to rotate. The ball nut 22 is connected to the brake disc 60. Preferably, a connecting disc 212 is provided on the ball nut 22, and the brake disc 60 is flange-connected to the connecting disc 212 to ensure more stable installation. A ball nut 70 is provided between the ball nut 22 and the brake disc 60 to ensure a reasonable structure.

[0027] In this embodiment, one end of the screw rod 21 extends into the sleeve component 10, and the other end of the screw rod 21 is provided with a first earring 23. One end of the sleeve component 10 is provided with a hole capable of accommodating the screw rod 21, and the other end of the sleeve component 10 is provided with a second earring 12. The first earring 23 and the second earring 12 are used to connect with the structure to ensure installation and positioning. A limit block 211 is provided at one end of the screw rod 21, and a limit plate 11 that cooperates with the limit block 211 is provided in the sleeve component 10. The movement stroke of the screw rod 21 is limited to prevent the damping component 50 from failing.

[0028] In this embodiment, the brake disc 60 is circular, the screw rod 21 is vertically arranged at the center of the brake disc 60, and the cross-sectional shape of the sleeve component 10 is approximately "T"-shaped, so as to accommodate the screw rod 21 and the brake disc 60 at the same time.

[0029] When this variable damping semi-active damper undergoes relative linear motion with the sleeve component 10 and the screw component 20, the ball nut 22 drives the connecting disk 212 to rotate. Since the brake disk 60 and the connecting disk 212 are kept in a fastened state by the connecting bolts, the brake disk 60 rotates synchronously. When the brake disk 60 rotates, it drives the magnetic components 42 arranged on both sides of the brake disk 60 to rotate synchronously. The magnetic components 42 generate electromagnetic induction with the left winding coil and the right winding coil next to it, and the induced current increases with the increase of the rotation speed, and the solenoid valve 33 is controlled to open by the generated current. The solenoid valve 33 controls the hydraulic cylinder 311 to increase the output power, so that the piston 32 pushes the friction plate, and the friction plate pressurizes the brake disk 60, causing the rotational friction resistance of the brake disk 60 to increase, and the pressure can change with different vibration inputs, thereby generating a variable damping force, thereby improving the comprehensive anti-seismic protection effect for the structure.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A variable damping semi-active damper, characterized in that: include: Sleeve components, screw components, brake discs, damping components, hydraulic control components and speed sensing components; The screw component is arranged in the sleeve component, and the screw component and the sleeve component move relative to each other; The brake disc is arranged in the sleeve component, the brake disc is connected to the screw component, and the screw component drives the brake disc to rotate; The damping component is arranged in the sleeve component, and when the screw component drives the brake disc to rotate, the brake disc and the damping component form a friction pair and generate a damping force; The hydraulic control component is arranged in the sleeve component, and the hydraulic control component comprises a solenoid valve, a piston and a hydraulic cylinder, and the piston is connected to the damping component; The speed sensing component is arranged in the sleeve component, and the speed sensing component includes a magnetic component and an induction mechanism. The magnetic component is arranged on the brake disc, and the magnetic component rotates synchronously with the brake disc. When the magnetic component rotates, the induction mechanism generates electromagnetic induction, and the generated induced current is input into the hydraulic control component to open the solenoid valve, increase the liquid pressure in the hydraulic cylinder, increase the pressure of the piston on the damping component, and thus enhance the damping force between the brake disc and the damping component; It also includes an oil storage tank and an oil pipe, wherein the oil storage tank is arranged in the sleeve component, the oil storage tank is connected to the hydraulic cylinder through the oil pipe, and the solenoid valve controls the communication status of the oil pipe; The damping component is a friction plate, and the friction plates are respectively arranged on both sides of the brake disc; The screw rod component comprises a ball nut and a screw rod, wherein the ball nut is arranged on the screw rod, the screw rod drives the ball nut to rotate, and the ball nut is connected to the brake disc.

2. The variable damping semi-active damper according to claim 1, characterized in that: The hydraulic control component further comprises a fixing seat, and the hydraulic cylinder and the piston are both arranged on the fixing seat.

3. The variable damping semi-active damper according to any one of claims 1 to 2, characterized in that: The magnetic components are arranged in two groups, each of which is arranged on both sides of the brake disc, and the induction mechanism includes a left-wound coil and a right-wound coil. The left-wound coil is provided with a left stator, and the right-wound coil is provided with a right stator. The left-wound coil and the right-wound coil respectively generate electromagnetic induction with each of the magnetic components.

4. The variable damping semi-active damper according to claim 1, characterized in that: One end of the screw rod extends into the sleeve component, and the other end of the screw rod is provided with a first earring.

5. The variable damping semi-active damper according to claim 4, characterized in that: One end of the sleeve component is provided with a hole capable of accommodating the screw rod, and the other end of the sleeve component is provided with a second earring.

6. The variable damping semi-active damper according to claim 5, characterized in that: A limiting block is arranged at one end of the screw rod, and a limiting plate matched with the limiting block is arranged in the sleeve component.

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