A bidirectional inertial velocity damper

Abstract

The invention discloses a bidirectional inertia speed damper, comprising a sleeve component, a forward inertia brake disc component and a reverse inertia brake disc component; two groups of one-way transmission components are arranged at intervals on a screw component, the one-way transmission components are respectively connected to the forward inertia brake disc component and the reverse inertia brake disc component, and the transmission directions of the two groups of one-way transmission components are opposite; a friction damping component is arranged in the sleeve component; through the screw component sensing the vibration force, when the screw component rotates forward, the one-way transmission component drives the forward inertia brake disc component to rotate forward, and vice versa, the reverse inertia brake disc component is driven to rotate reversely; the linear reciprocating motion of the damper is converted into bidirectional accelerated motion of the forward inertia brake disc component and the reverse inertia brake disc component, and then converted into heat energy through the friction damping component at the end of the inertia brake disc component, thereby solving the problems of stress concentration and fracture of the screw component caused by the change of the rotation direction of the screw component under the action of external force.

Description

Technical Field

[0001] The invention relates to the technical field of structural vibration reduction, in particular to a bidirectional inertial velocity damper. Background Art

[0002] Dampers can effectively reduce the vibration response of structures and greatly improve the seismic performance of structures. However, traditional dampers are not energy efficient, have low energy conversion rates, and cannot cope with large earthquake inputs. In severe cases, they may cause the damper to fail. Traditional dampers 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 bidirectional inertial velocity damper that can exert better anti-seismic performance.

[0004] According to a first aspect of the present invention, there is provided a bidirectional inertia velocity damper, comprising: a sleeve component, a screw component, two groups of friction damping components, a forward inertia brake disc component, a reverse inertia brake disc component and two groups of one-way transmission components; wherein the screw component is arranged in the sleeve component, and the screw component and the sleeve component can undergo relative linear motion; the two groups of one-way transmission components are arranged on the screw component at intervals, the forward inertia brake disc component and the reverse inertia brake disc component are respectively embedded in each one-way transmission component, the transmission directions of the two groups of one-way transmission components are opposite, when the screw component drives one one-way transmission component to rotate synchronously, the other one-way transmission component is locked; wherein the two groups of friction damping components are respectively arranged between the sleeve component and the forward inertia brake disc component, and between the sleeve component and the reverse inertia brake disc component.

[0005] Beneficial effects: This bidirectional inertia velocity damper senses the effect of vibration force through the screw component. When the screw component rotates forward, the one-way transmission component drives the forward inertia brake disc component to rotate forward and locks the reverse inertia brake disc component. When the screw component rotates reversely, the one-way transmission component drives the reverse inertia brake disc component to rotate reversely and locks the forward inertia brake disc component. The linear reciprocating motion energy is converted into rotational energy of the forward inertia brake disc component and the reverse inertia brake disc component, and converted into heat energy through the friction damping component. The invention solves the problems of stress concentration and fracture caused by the change of rotation direction of the screw component when the damper reciprocates under the action of external force.

[0006] According to the bidirectional inertia velocity damper of the first aspect of the present invention, the two groups of friction damping components each include an outer friction layer and a plurality of inner friction plates, the two groups of outer friction layers are embedded on the inner side wall of the sleeve component, the two groups of inner friction plates are respectively arranged on the side wall of the forward inertia brake disc component and the side wall of the reverse inertia brake disc component, and the two groups of outer friction layers and the two groups of inner friction plates respectively constitute friction pairs.

[0007] According to the bidirectional inertia velocity damper of the first aspect of the embodiment of the present invention, the two groups of friction damping components also include a plurality of mass blocks and a plurality of elastic components, the inner friction plates of the two groups are respectively arranged on the outer sides of the mass blocks of the two groups, one end of the elastic components of the two groups are respectively arranged on the inner sides of the mass blocks of the two groups, and the other ends of the elastic components of the two groups are respectively arranged on the side walls of the forward inertia brake disc component and the side walls of the reverse inertia brake disc component.

[0008] According to the bidirectional inertia velocity damper of the first aspect of the embodiment of the present invention, flanges are provided on the side walls of the forward inertia brake disc component and the side walls of the reverse inertia brake disc component, and the other ends of each elastic component of the two groups are respectively arranged on the side walls of the flange of the forward inertia brake disc component and the side walls of the flange of the reverse inertia brake disc component.

[0009] According to the bidirectional inertia velocity damper of the first embodiment of the present invention, the unidirectional transmission component includes a ratchet assembly and a transmission assembly, and the screw component, the ratchet assembly and the transmission assembly are connected in sequence.

[0010] According to the bidirectional inertia velocity damper of the first embodiment of the present invention, the ratchet assembly includes a ratchet and a pawl, and the pawl is internally meshed and connected in the ratchet.

[0011] According to the bidirectional inertia velocity damper of the first embodiment of the present invention, the transmission assembly is a gear, the ratchet is internally meshed and connected inside the gear, and the positive inertia brake disc component and the reverse inertia brake disc component are respectively externally meshed and connected to each gear.

[0012] According to the bidirectional inertia velocity 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 nested on the screw rod, and the ball nut is fixedly connected to the two sets of unidirectional transmission components.

[0013] According to the bidirectional inertia velocity damper of the first aspect of the present invention, one end of the screw is nested in the sleeve component, the other end of the screw is provided with a first earring, one end of the sleeve component is provided with a hole that can accommodate the screw, and the other end of the sleeve component is provided with a second earring.

[0014] According to the bidirectional inertia velocity damper of the first embodiment of the present invention, a limit block is provided at one end of the screw rod, and a limit plate cooperating with the limit block is provided in the sleeve component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 A front view of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Sectional view of AA. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Reference Figure 1-2A bidirectional inertia velocity damper comprises: a sleeve component 10, a screw component, two groups of friction damping components, a positive inertia brake disc component 401, a reverse inertia brake disc component 402 and two groups of one-way transmission components; wherein the screw component is arranged in the sleeve component 10, and the screw component and the sleeve component 10 can have relative linear motion; the two groups of one-way transmission components are arranged on the screw component at intervals, the positive inertia brake disc component 401 and the reverse inertia brake disc component 402 are respectively embedded in each one-way transmission component, and the transmission directions of the two groups of one-way transmission components are opposite. When the screw component drives one one-way transmission component to rotate synchronously, the other one-way transmission component is locked; wherein the two groups of friction damping components are respectively arranged between the sleeve component 10 and the positive inertia brake disc component 401, and between the sleeve component 10 and the reverse inertia brake disc component 402. This bidirectional inertia velocity damper senses the effect of vibration force through a screw component. When the screw component rotates forward, the one-way transmission component drives the forward inertia brake disc component 401 to rotate forward and locks the reverse inertia brake disc component 402. When the screw component rotates reversely, the one-way transmission component drives the reverse inertia brake disc component 402 to rotate reversely and locks the forward inertia brake disc component 401. The linear reciprocating motion energy is converted into the rotational energy of the forward inertia brake disc component 401 and the reverse inertia brake disc component 402, and is converted into heat energy through a friction damping component. The invention solves the problem of stress concentration and fracture caused by the change in the rotation direction of the screw component when the damper reciprocates under the action of an external force.

[0023] In this embodiment, the sleeve component 10 is a rotating body structure, specifically a "T"-shaped sleeve structure, which is convenient for accommodating the screw component, the positive inertia brake disc component 401 and the reverse inertia brake disc component 402 at the same time. The positive inertia brake disc component 401 and the reverse inertia brake disc component 402 are disc-shaped structures. The center line of the screw component coincides with the center line of the sleeve component 10, and the screw component and the sleeve component 10 undergo relative linear motion.

[0024] In the present embodiment, the two groups of friction damping components each include an outer friction layer 301 and a plurality of inner friction plates 302. The two groups of outer friction layers 301 are embedded on the inner side wall of the sleeve component 10. The inner friction plates 302 of the two groups are respectively arranged on the side wall of the positive inertia brake disc component 401 and the side wall of the reverse inertia brake disc component 402. Specifically, the inner friction plates 302 of the two groups are respectively arranged in a circular array with the center of the positive inertia brake disc component 401 and the center of the reverse inertia brake disc component 402 as the center. The two groups of outer friction layers 301 and the inner friction plates 302 of the two groups constitute friction pairs respectively. There are two specific embodiments. In the first embodiment, the screw component rotates forward, and the one-way transmission component connected to the forward inertia brake disc component 401 rotates synchronously, driving the forward inertia brake disc component 401 to rotate, and the inner friction plate 302 on the forward inertia brake disc component 401 and the outer friction layer 301 generate friction energy consumption, while the one-way transmission component connected to the reverse inertia brake disc component 402 is locked, and the reverse inertia brake disc component 402 does not rotate, and the inner friction plate 302 on the reverse inertia brake disc component 402 does not generate friction energy consumption with the outer friction layer 301. In the second embodiment, the screw member rotates in the opposite direction, and the one-way transmission member connected to the reverse inertia brake disc member 402 rotates synchronously, driving the reverse inertia brake disc member 402 to rotate, and the inner friction plate 302 on the reverse inertia brake disc member 402 and the outer friction layer 301 generate friction energy consumption, while the one-way transmission member connected to the forward inertia brake disc member 401 is locked, and the forward inertia brake disc member 401 does not rotate, and the inner friction plate 302 on the forward inertia brake disc member 401 does not generate friction energy consumption with the outer friction layer 301. The forward inertia brake disc member 401 and the reverse inertia brake disc member 402 are arranged at intervals, which can avoid stress concentration and fracture problems and ensure stable and reliable friction energy consumption.

[0025] In this embodiment, the two groups of friction damping components also include a plurality of mass blocks 303 and a plurality of elastic components 304, one mass block 303 corresponds to an inner friction plate 302 and an elastic component 304, the inner friction plates 302 of the two groups are respectively arranged on the outside of the mass blocks 303 of the two groups, one end of the elastic components 304 of the two groups are respectively arranged on the inside of the mass blocks 303 of the two groups, and the other end of the elastic components 304 of the two groups are respectively arranged on the side wall of the positive inertia brake disc component 401 and the side wall of the reverse inertia brake disc component 402. After the elastic components 304 are connected to the mass blocks 303, the elastic components 304 have a tendency to stretch under the action of centrifugal force, the pressure between the inner friction plate 302 and the outer friction layer 301 on the mass blocks 303 increases, and the friction force increases accordingly, so as to achieve a better energy consumption effect. Preferably, the elastic component 304 is a spring, and the elastic component 304 is arranged to extend along the radial direction of the screw component, and the mass block 303 is a block with a certain mass.

[0026] Preferably, flanges are provided on the side walls of the positive inertia brake disc component 401 and the side walls of the reverse inertia brake disc component 402, and the other ends of the two groups of elastic components 304 are respectively arranged on the side walls of the flange of the positive inertia brake disc component 401 and the side walls of the flange of the reverse inertia brake disc component 402. The flanges are provided to increase the side wall area of ​​the positive inertia brake disc component 401 and the side wall area of ​​the reverse inertia brake disc component 402, thereby facilitating the installation of the elastic components 304.

[0027] In this embodiment, the one-way transmission component includes a ratchet assembly and a transmission assembly 405, and the screw component, the ratchet assembly and the transmission assembly 405 are connected in sequence. The ratchet assembly includes a ratchet 403 and a pawl 404, and the pawl 404 is internally meshed and connected in the ratchet 403, which can optimize the internal structure. The transmission assembly 405 is a gear, and the ratchet 403 is internally meshed and connected in the gear. The positive inertia brake disc component 401 and the reverse inertia brake disc component 402 are respectively meshed and connected with the external gears to ensure that the arrangement of the transmission structure is reasonable and scientific.

[0028] In this embodiment, the screw rod component includes a ball nut 22 and a screw rod 21. The ball nut 22 is nested in the screw rod 21. The ball nut 22 is fixedly connected to two sets of one-way transmission components. A bearing 24 is arranged between the ball nut 22 and the sleeve component 10. One end of the screw rod 21 is nested in the sleeve component 10. 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. The other end of the sleeve component 10 is provided with a second earring 12 for connecting with the structure to ensure installation and positioning. A limit block 211 is arranged at one end of the screw rod 21. A limit plate 11 cooperating with the limit block is arranged in the sleeve component 10 to limit the movement stroke of the screw rod 21 and avoid failure of this bidirectional inertial velocity damper.

[0029] The bidirectional inertia velocity damper is provided with two sets of one-way transmission components at intervals on the ball nut 22, and the two sets of one-way transmission components are respectively connected to the forward inertia brake disc component 401 and the reverse inertia brake disc component 402, so that the forward inertia brake disc component 401 can only rotate forward or be locked, and the reverse inertia brake disc component 402 can only rotate backward or be locked, and the screw rod 21 is used to sense the external vibration force and to make relative linear motion with the sleeve component 10. At this time, the screw rod 21 has a first working state of forward rotation and a second working state of reverse rotation. When the screw rod 21 rotates forward, the forward inertia brake The disk component 401 is driven by the one-way transmission component to rotate synchronously, and forms a friction pair with the friction damping component to achieve friction energy consumption. At this time, the reverse inertia brake disk component 402 is locked by the one-way transmission component; when the screw 21 rotates in the opposite direction, the reverse inertia brake disk component 402 is driven by the one-way transmission component to rotate synchronously, and forms a friction pair with the friction damping component to achieve friction energy consumption. At this time, the forward inertia brake disk component 401 is locked by the one-way transmission component, ensuring that under the action of external force, when the rotation direction of the ball nut 22 changes, no stress concentration will occur, thereby avoiding the problem of breakage.

[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 bidirectional inertial velocity damper, characterized in that: include: A sleeve component, a screw component, two sets of friction damping components, a positive inertia brake disc component, a reverse inertia brake disc component and two sets of one-way transmission components; The screw component is arranged in the sleeve component, and the screw component and the sleeve component can perform relative linear motion; Two groups of one-way transmission components are arranged on the screw component at intervals, the positive inertia brake disc component and the reverse inertia brake disc component are respectively embedded in each one-way transmission component, the transmission directions of the two groups of one-way transmission components are opposite, when the screw component drives one one-way transmission component to rotate synchronously, the other one-way transmission component is locked; Two groups of friction damping components are respectively arranged between the sleeve component and the positive inertia brake disc component, and between the sleeve component and the reverse inertia brake disc component; The one-way transmission component includes a ratchet assembly and a transmission assembly, and the screw component, the ratchet assembly and the transmission assembly are connected in sequence; The ratchet assembly comprises a ratchet and a pawl, wherein the pawl is internally meshed and connected within the ratchet; The transmission assembly is a gear, the ratchet wheel is internally meshed and connected inside the gear, and the positive inertia brake disc component and the reverse inertia brake disc component are respectively externally meshed and connected to the gears; The screw rod component comprises a ball nut and a screw rod, wherein the ball nut is nested on the screw rod, and the ball nut is fixedly connected to the two groups of the one-way transmission components.

2. The bidirectional inertial velocity damper according to claim 1, characterized in that: The two groups of friction damping components each include an outer friction layer and a plurality of inner friction plates. The two groups of outer friction layers are embedded on the inner side wall of the sleeve component. The inner friction plates of the two groups are respectively arranged on the side wall of the forward inertia brake disc component and the side wall of the reverse inertia brake disc component. The two groups of outer friction layers and the inner friction plates of the two groups respectively constitute friction pairs.

3. The bidirectional inertial velocity damper according to claim 2, characterized in that: The two groups of friction damping components also include a plurality of mass blocks and a plurality of elastic components. The inner friction plates of the two groups are respectively arranged on the outside of the mass blocks of the two groups, one end of the elastic components of the two groups are respectively arranged on the inside of the mass blocks of the two groups, and the other end of the elastic components of the two groups are respectively arranged on the side wall of the positive inertia brake disc component and the side wall of the reverse inertia brake disc component.

4. The bidirectional inertial velocity damper according to claim 3, characterized in that: Flanges are provided on the side walls of the positive inertia brake disc component and the side walls of the reverse inertia brake disc component, and the other ends of the two groups of elastic components are respectively arranged on the side walls of the flange of the positive inertia brake disc component and the side walls of the flange of the reverse inertia brake disc component.

5. The bidirectional inertial velocity damper according to claim 1, characterized in that: One end of the screw is nested in the sleeve component, and the other end of the screw is provided with a first earring. One end of the sleeve component is provided with a hole capable of accommodating the screw, and the other end of the sleeve component is provided with a second earring.

6. The bidirectional inertial velocity damper according to claim 5, characterized in that: A limiting block is arranged at one end of the screw rod, and a limiting plate cooperating with the limiting block is arranged in the sleeve component.

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