Damping decoupling steering protection inerter damper

Abstract

The invention discloses a damping decoupling steering protection inerter damper which comprises a left connecting piece, a cover plate, a first bearing, an outer cylinder, a steering protection device and a right connecting piece. The left connecting piece is fixed to a ball screw in the steering protection device. The first bearings are fixed to the two ends of the steering protection device. The right connecting piece is fixedly connected to the outer cylinder; the steering protection device comprises a ball screw, a screw nut pair, a rotary drum, a ratchet wheel, an adapter, a second bearing, a pawl, a spring, a magnet set and a guide sleeve. Decoupling of rotating inertia force of the rotating drum and reverse driving force of the lead screw nut is achieved through a special ratchet wheel structure when the inertial damper steers, so that the steering protection function of the inertial damper is achieved, and the inertial damper can be adjusted into various energy consumption modes according to requirements.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to a damping decoupling steering protection inertia damper. Background Art

[0002] As a new type of damper, the inertial capacity damper has gradually replaced conventional dampers and been applied in actual engineering projects due to its unique characteristics of axial displacement amplification, mass amplification and high damping. Among them, the ball screw type inertial capacity damper is the most common. Its structure is divided into two types: the inner rotating type in which the inner cylinder is connected to the ball screw and the outer cylinder is fixed alone, and the outer rotating type in which the outer cylinder is connected to the ball screw and the inner cylinder is fixed alone. However, the rotating cylinder connected to the ball screw has a certain moment of inertia. At the moment the damper turns, the rotating cylinder will continue to rotate in the original direction of motion due to inertia. The ball screw moves in the opposite direction and gives the rotating cylinder a driving force opposite to the inertial force. Under the joint action of the two forces, the force on the inertial capacity damper will increase instantaneously at the moment of turning. When the moment of inertia of the rotating cylinder is large or the damper moves faster, the force on the damper when turning will increase geometrically, resulting in damage to the damper or destruction of the connection structure between the damper and the structure. Summary of the invention

[0003] In view of the above problems, the present invention provides a damping decoupling steering protection inertial capacity damper to solve the problem of step-like sudden change of force value of the inertial capacity damper during steering in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is: a damping decoupling steering protection inertia damper comprises: a left connecting piece, a cover plate, a first bearing, an outer cylinder, a steering protection device, and a right connecting piece, wherein the left connecting piece is fixed to the ball screw in the steering protection device; the first bearing is provided with two and arranged in opposite directions, the two first bearing inner rings are fixed to the two ends of the steering protection device, and the outer rings are fixed to the two ends inside the outer cylinder; the cover plate is fixed to the two ends of the outer cylinder and supports the outer ring of the first bearing; the right connecting piece is fixedly connected to the outer cylinder; the steering protection device comprises: a ball screw, a screw nut pair, a rotating cylinder, a ratchet, an adapter, a second bearing, a pawl, a spring, A magnet group and a guide sleeve; the screw nut pair is movably coaxially connected to the ball screw; a group of rotating cylinders, ratchet wheels, second bearings and adapter seats are symmetrically arranged on both sides of the screw nut pair, and are coaxially connected; the ratchet wheel is fixed to one end of the inner side of the rotating cylinder, the second bearing and the ratchet wheel are arranged side by side, and the inner ring is fixedly connected to the adapter seat, and the outer ring is fixedly connected to the inside of the rotating cylinder; the pawl is rotatably installed on the adapter seat; the spring is a compression spring, one end of which is fixed to the pawl and the other end is fixed to the adapter seat; the spring pushes the pawl to the ratchet wheel; the magnet group is arranged in a ring on the outside of the rotating cylinder; the guide sleeve is fixedly connected to the bottom end of the ball screw and is slidably arranged on the inner side of the rotating cylinder.

[0005] Preferably, at least two ratchets are mounted and connected on the adapter in the steering protection device and are evenly distributed to provide a more balanced driving force to drive the rotating drum;

[0006] Preferably, the driving direction of the ratchets on both sides of the screw nut in the steering protection device is opposite to the unloading direction, that is, when the screw nut rotates, only one side of the rotating drum is driven to rotate;

[0007] Preferably, the adapter is provided with threaded holes and countersunk holes of the same number and arranged evenly, so as to realize relative installation on the lead screw nut;

[0008] The beneficial effects of the present invention are:

[0009] First, when the inertial capacity damper of steering protection is subjected to axial force, the ball screw drives the screw nut to rotate. Because the ratchet wheels on both sides of the screw nut are in opposite directions, the screw nut will only drive the rotating drum of the ratchet wheel in the driving state to rotate and consume energy, while the rotating drum of the ratchet wheel in the unloading state remains stationary. When the ball screw reaches the displacement amplitude and moves in the opposite direction, the screw nut rotates in the opposite direction, and the states of the ratchets on both sides are instantly converted. That is, the ratchet wheel that was originally in the driving state will be in the unloading state and will not be affected by the reverse rotation of the screw nut. The rotating drum continues to rotate and consume energy due to the inertial force, while the ratchet wheel that was originally in the unloading state will be in the driving state. The stationary rotating drum will start to rotate under the force. A set of ratchet structures in opposite directions are used to realize the decoupling of the rotating inertial force of the rotating drum and the reverse driving force of the screw nut when the inertial damper turns, thereby realizing the steering protection function of the inertial damper.

[0010] Second, the inertial capacity damper of the steering protection is two independent energy-consuming rotating drums during forward and reverse motion. By adjusting the magnet groups on the two rotating drums, multiple energy consumption modes can be achieved: only forward energy consumption, only reverse energy consumption, large forward energy consumption and small reverse energy consumption, small forward energy consumption and large reverse energy consumption, and the same forward and reverse energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structural cross section of the present invention;

[0012] Figure 2 It is an exploded schematic diagram of the steering protection device of the present invention;

[0013] Figure 3 It is a schematic diagram of the ratchet structure of the present invention;

[0014] Figure 4 This is an appearance diagram of Embodiment 1 of the present invention;

[0015] Figure 5 is a cross-sectional view of the first embodiment of the present invention;

[0016] Figure 6 This is an appearance diagram of the second embodiment of the present invention;

[0017] Figure 7 is a cross-sectional view of a second embodiment of the present invention;

[0018] In the figure, 1-left connecting piece, 2-steering protection device, 3-outer cylinder, 4-right connecting piece, 5-cover plate, 6-first bearing, 201-ball screw, 202-screw nut pair, 203-rotating cylinder, 204-ratchet, 205-adapter seat, 206-second bearing, 207-pawl, 208-spring, 209-magnet group, 210-guide sleeve, 211-damping fluid, 212-rotating seal.

[0019] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] Embodiment 1: A damping decoupling steering protection inertia damper, such as Figure 1-5As shown, it includes: a left connecting piece, a cover plate, a first bearing, an outer cylinder, a steering protection device, and a right connecting piece. The left connecting piece is a disc flange type, one end of which is provided with an internal thread and fixed to the ball screw in the steering protection device, and the other end is connected to the structure; there are two first bearings, and they are arranged in opposite directions. The two first bearing inner rings are fixed to the two ends of the steering protection device, and the outer rings are fixed to the two ends inside the outer cylinder; the cover plate is fixed to the two ends of the outer cylinder and supports the outer ring of the first bearing; the right connecting piece is a disc flange type, one end of which is provided with an external thread and fixedly connected to the outer cylinder, and the other end is connected to the structure; the steering protection device is composed of a ball screw equipped with a screw nut, two rotating cylinders, two ratchets, two second bearings, two adapters, four pawls, four springs, two groups of magnet groups and a guide sleeve, and eight mounting holes are evenly arranged on the adapter, of which four vertical holes are threaded holes and four horizontal holes are countersunk holes. The two adapters are symmetrically arranged relative to the screw nut and cross 90 degrees to match the threaded holes with the countersunk holes and then fixed to the screw nut with bolts; the adapter The seat is a three-layer hollow cylindrical structure, with two ratchet mounting cylinders symmetrically arranged on the upper surface of the middle layer, a threaded hole is provided in the middle of the cylinder, the pawl is rotatably mounted on the cylinder with bolts, and the upper surface of the pawl is flush with the top layer of the adapter seat, the spring is symmetrically fixed on the top cylindrical surface, the other side of the spring is fixed to the lower side of the pawl, the pawl is pushed radially outward, the second bearing is fixedly mounted on the middle cylindrical surface, and the bottom cylinder serves as a shoulder to support the inner ring of the second bearing; the ratchet is provided with a mounting countersunk hole, which is fixedly mounted in the drum mounting groove by bolts, and the second bearing It is fixedly installed in the drum mounting groove side by side with the ratchet, and the outer ring of the ratchet is raised to a certain height to support the outer ring of the second bearing. The pawl is in contact with the ratchet. When the adapter rotates in the opposite direction of the ratchet and pawl, the drum can be driven to rotate. When the adapter rotates in the opposite direction, the ratchet pawl is in the unloading direction, and the adapter can only rotate by itself and cannot drive the drum; the magnet group is arranged in a ring on the outside of the drum, and a gap is left between it and the outer drum, and energy is consumed by the electromagnetic damping effect; the guide sleeve is fixedly connected to the bottom end of the ball screw with bolts, and is slidably arranged on the inside of the drum.

[0021] Embodiment 2: A damping decoupling steering protection inertia damper, such as Figure 6-7 As shown, the difference between Example 2 and Example 1 is that the left connecting member and the right connecting member are ear plate type, two rotary seals are provided on the outside of the rotating cylinder, the rotary seals seal the gap between the rotating cylinder and the outer cylinder, the sealing cavity is filled with damping fluid, and energy dissipation is achieved through the shear damping force of the damping fluid when the rotating cylinder and the outer cylinder rotate relative to each other.

[0022] Working principle: When the structure is subjected to earthquake or wind vibration, the ball screw drives the screw nut to rotate reciprocatingly. Because the ratchet wheels on both sides of the screw nut move in opposite directions, the screw nut will only drive the drum of the ratchet wheel in the driving state to rotate and consume energy, while the drum of the ratchet wheel in the unloading state remains stationary. When the ball screw reaches the displacement amplitude and moves in the opposite direction, the screw nut rotates in the opposite direction, and the states of the ratchets on both sides are instantly converted. That is, the ratchet wheel that was originally in the driving state will be in the unloading state and will not be affected by the reverse rotation of the screw nut. The drum continues to rotate and consume energy due to the inertial force, while the ratchet wheel that was originally in the unloading state will be in the driving state. The stationary drum will be forced to start rotating. A set of ratchet wheels in opposite directions is used to realize the decoupling of the drum rotation inertia force and the reverse driving force of the screw nut when the inertial damper turns, thereby realizing the steering protection function of the inertial damper.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A damping decoupling steering protection inertia damper, characterized in that: include: A left connecting piece, a cover plate, a first bearing, an outer cylinder, a steering protection device, and a right connecting piece, wherein the left connecting piece is fixed to the ball screw in the steering protection device; two first bearings are provided and arranged in opposite directions, the two first bearing inner rings are fixed to the two ends of the steering protection device, and the outer rings are fixed to the two ends inside the outer cylinder; the cover plate is fixed to the two ends of the outer cylinder and supports the outer ring of the first bearing; the right connecting piece is fixedly connected to the outer cylinder; the steering protection device includes: a ball screw, a screw nut pair, a rotating cylinder, a ratchet, an adapter, a second bearing, a pawl, a spring, a magnet group, and a guide sleeve; the screw nut pair is movable Coaxially connected to the ball screw; a group of rotating cylinders, ratchet wheels, second bearings and adapter seats are symmetrically arranged on both sides of the screw-nut pair, and are coaxially connected; the ratchet wheel is fixed to one end of the inner side of the rotating cylinder, the second bearing and the ratchet wheel are arranged side by side, and the inner ring is fixedly connected to the adapter seat, and the outer ring is fixedly connected to the inside of the rotating cylinder; the pawl is rotatably installed on the adapter seat; the spring is a compression spring, one end of which is fixed to the pawl, and the other end is fixed to the adapter seat; the spring pushes the pawl to the ratchet wheel; the magnet group is arranged in a ring on the outside of the rotating cylinder; the guide sleeve is fixedly connected to the bottom end of the ball screw, and is slidably arranged on the inside of the rotating cylinder.

2. The damping decoupling steering protection inertia damper according to claim 1, characterized in that: At least two ratchets are mounted and connected on the adapter in the steering protection device and are evenly distributed, providing a more balanced driving force to drive the rotating drum.

3. The damping decoupling steering protection inertia damper according to claim 1, characterized in that: The driving direction of the ratchets on both sides of the lead screw nut in the steering protection device is opposite to the unloading direction, that is, when the lead screw nut rotates, only one side of the rotating drum is driven to rotate.

4. The damping decoupling steering protection inertia damper according to claim 2, characterized in that: The adapter seat is provided with threaded holes and countersunk holes of the same number and arranged evenly, so as to realize relative installation on the lead screw nut.

5. The damping decoupling steering protection inertia damper according to claim 1, characterized in that: The damper is two independent energy-consuming drums when moving forward and reverse. By adjusting the magnet groups on the two drums, multiple energy consumption modes can be achieved, including only forward energy consumption, only reverse energy consumption, large forward energy consumption and small reverse energy consumption, small forward energy consumption and large reverse energy consumption, and the same forward and reverse energy consumption.

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