A rotational speed damper

Abstract

The invention discloses a rotational speed damper, comprising a sleeve component, a screw component, a rotating disk component and a friction damping component; the screw component can be arranged in the sleeve component for relative movement; the rotating disk component is arranged in the sleeve component, comprising an inner stiffening plate, an elastic body and an overhanging plate connected in sequence, and the inner stiffening plate is connected to the screw component; the friction damping component comprises a friction layer and a mass block, the friction layer is arranged in the sleeve component, one end of the mass block is connected to the overhanging plate, and the other end is provided with a friction plate that forms a friction pair with the friction layer; the screw component senses the vibration force and moves relative to the sleeve component, the rotating disk component drives the mass block to rotate synchronously, the rotation speed change causes the mass block to generate different centrifugal forces, causing the pressure between the friction plate and the friction layer to change, so that the damper realizes variable output of damping force when the external load changes the speed; the invention has a simple structure and high damping efficiency, can effectively reduce costs and extend service life.

Description

Technical Field

[0001] The invention relates to the technical field of structural vibration reduction, and in particular to a rotation speed type 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 rotation speed type damper which can exert better anti-seismic performance.

[0004] According to a first aspect of an embodiment of the present invention, there is provided a rotational speed type damper, comprising: a sleeve component, a screw component, a rotating disk component and a friction damping component; wherein the screw component is arranged in the sleeve component, and the screw component and the sleeve component can undergo relative motion; wherein the rotating disk component is arranged in the sleeve component, the rotating disk component comprises an elastomer, an inner stiffening plate and an outer extension plate, the inner stiffening plate is fixedly connected to the screw component, the elastomer is arranged on the inner stiffening plate, the outer extension plate is arranged on the elastomer, and the screw component is used to drive the rotating disk component to rotate; wherein the friction damping component comprises a friction layer and a mass block, the friction layer is arranged on the inner side wall of the sleeve component, one end of the mass block is connected to the outer extension plate, and the other end of the mass block is provided with a friction plate, the friction layer and the friction plate constitute a friction pair, and the outer extension plate has a tendency to move away from the screw component under the centrifugal force of the elastomer, and is used to increase the pressure between the friction layer and the friction plate.

[0005] Beneficial effect: This rotational speed type damper senses the effect of vibration force through the screw component. When the sleeve component and the screw component move relative to each other, the rotating disk component rotates and drives the mass block to rotate. The change in rotation speed causes the mass block to generate different centrifugal forces, causing the pressure between the friction plate and the friction layer to change, thereby achieving variable output of damping force when the speed changes. The invention has a simple structure and high damping efficiency, can effectively reduce costs and extend service life.

[0006] According to the rotational speed 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 inner stiffening plate.

[0007] According to the rotational speed damper of the first embodiment of the present invention, the sleeve component is a rotating body structure, and the center line of the screw coincides with the center line of the sleeve component.

[0008] According to the rotational speed damper of the first embodiment of the present invention, the friction layer is an annular structure, the outer wall of the friction layer is fixedly connected to the inner wall of the sleeve component, and the inner wall of the friction layer is in contact with the friction plate.

[0009] According to the rotational speed damper of the first aspect of the embodiment of the present invention, multiple groups of protruding plates and mass blocks are arranged, and each protruding plate is arranged in a circular array on the elastomer, one end of each protruding plate is embedded in the elastomer, and the other end of each protruding plate protrudes outward and is extended along the radial direction of the screw component.

[0010] According to the rotational speed damper of the first embodiment of the present invention, a plurality of groups of inner stiffening plates are arranged, each inner stiffening plate and each outer extension plate are arranged at staggered intervals, each inner stiffening plate is arranged along the radial extension of the screw component, and each inner stiffening plate is buried in the elastomer.

[0011] According to the rotation speed damper of the first embodiment of the present invention, one end of the screw is nested in the sleeve component, and the other end of the screw is provided with a first earring.

[0012] According to the rotation speed type damper of the first embodiment of the present invention, one end of the sleeve member is provided with a hole capable of accommodating the screw rod, and the other end of the sleeve member is provided with a second earring.

[0013] According to the rotational speed 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 cooperating with 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 A front view of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Sectional view of AA. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] Reference Figure 1-2A rotational speed damper, comprising: a sleeve component 10, a screw component, a rotating disk component and a friction damping component; wherein the screw component is arranged in the sleeve component 10, and the screw component and the sleeve component 10 can move relative to each other; wherein the rotating disk component is arranged in the sleeve component 10, and the rotating disk component comprises an elastic body 105, an inner stiffening plate 106 and an outer extension plate 104, the inner stiffening plate 106 is fixedly connected to the screw component, the elastic body 105 is arranged on the inner stiffening plate 106, and the outer extension plate 104 is arranged on the elastic body 105 The screw component is used to drive the rotating disk component to rotate; wherein the friction damping component includes a friction layer 101 and a mass block 103, wherein the friction layer 101 is arranged on the inner wall of the sleeve component 10, one end of the mass block 103 is connected to the overhanging plate 104, and the other end of the mass block 103 is provided with a friction plate 102, and the friction layer 101 and the friction plate 102 constitute a friction pair, and the overhanging plate 104 has a tendency to move away from the screw component under the centrifugal force of the elastic body 105, and is used to increase the pressure between the friction layer 101 and the friction plate 102. This rotation speed type damper senses the vibration force through the screw component. When the sleeve component 10 and the screw component move relative to each other, the rotating disk component rotates and drives the mass block 103 to rotate. The change in speed causes the mass block 103 to generate different centrifugal forces, causing the pressure between the friction plate 102 and the friction layer 101 to change, thereby realizing the variable output of the damping force when the speed is changed; the invention has a simple structure and high damping efficiency, which can effectively reduce costs and extend service life. In this embodiment, the elastic body 105 is a polymer material that deforms significantly under stress and can quickly recover to a state close to the original state and size after stress relaxation. When the extension plate 104 has a tendency to move away from the screw component, the extension plate 104 will form a tensile stress on the outer end of the elastic body 105, and the inner stiffening plate 106 is fixedly connected to the screw component to anchor the inner end of the elastic body 105, so that the elastic body 105 is deformed under the joint action of the extension plate 104 and the inner stiffening plate 106. The mass block 103 is a block structure with a certain mass.

[0022] In this embodiment, the screw rod component includes a ball nut 22 and a screw rod 21. The ball nut 22 is nested on the screw rod 21, and the ball nut 22 is fixedly connected to the inner stiffening plate 106. The movement of the screw rod 21 drives the ball nut 22 to rotate, and the rotation of the ball nut 22 drives the inner stiffening plate 106 to rotate. The inner stiffening plate 106 drives the elastic body 105, the extension plate 104 and the mass block 103 to rotate synchronously, and the friction plate 102 on the mass block 103 and the friction layer 101 in the sleeve generate friction energy consumption.

[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 and the rotating disk component at the same time. A bearing 24 is arranged between the sleeve component 10 and the ball nut 22, and the center line of the screw 21 coincides with the center line of the sleeve component 10. Preferably, the friction layer 101 is an annular structure, the outer side wall of the friction layer 101 is fixedly connected to the inner side wall of the sleeve component 10, and the inner side wall of the friction layer 101 is in contact with the friction plate 102.

[0024] In this embodiment, multiple groups of the overhanging plates 104 and the mass block 103 are provided, and each overhanging plate 104 is provided on the elastic body 105 in a circumferential array, and one end of each overhanging plate 104 is embedded in the elastic body 105, and the other end of each overhanging plate 104 is extended outward and arranged along the radial direction of the screw member. Preferably, multiple groups of inner stiffening plates 106 are provided, and each inner stiffening plate 106 and each overhanging plate 104 are arranged at staggered intervals, and each inner stiffening plate 106 is arranged along the radial direction of the screw member, and each inner stiffening plate 106 is embedded in the elastic body 105, and the inner end of each inner stiffening plate 106 is fixed on the ball nut 22. The elastic body 105 is also an annular structure, each inner stiffening plate 106 and each outer extension plate 104 are arranged at intervals along the circumference of the elastic body 105, and the intervals between adjacent inner stiffening plates 106 and outer extension plates 104 are equal. The elastic body 105 is arranged perpendicular to the center line of the screw 21. The inner stiffening plate 106 is buried in the elastic body 105 to increase the strength of the elastic body 105; the inner end of the outer extension plate 104 is embedded in the elastic body 105 and does not contact the ball nut 22, and the outer end of the outer extension plate 104 extends out of the elastic body 105 and is connected to the mass block 103. The inner stiffening plate 106 and the outer extension plate 104 are both steel plates.

[0025] In this embodiment, one end of the screw rod 21 is nested in the sleeve part 10, and the other end of the screw rod 21 is provided with a first earring 23. One end of the sleeve part 10 is provided with a hole capable of accommodating the screw rod 21, and the other end of the sleeve part 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.

[0026] In this embodiment, a limit block 211 is provided at one end of the screw rod 21, and a limit plate 11 cooperating with the limit block 211 is provided in the sleeve component 10 to limit the movement stroke of the screw rod 21 to avoid failure of this rotation speed type damper.

[0027] This rotation speed type damper senses the effect of external vibration force through the screw 21. When the screw 21 and the sleeve component 10 undergo relative linear motion, the ball nut 22 drives the rotating disk component to rotate. Since the elastic body 105 is fixedly connected to each outward extension plate 104, and the outer end of each outward extension plate 104 is fixedly connected to a mass block 103, the elastic body 105, each inner stiffening plate 106, each outward extension plate 104 and each mass block 103 rotate synchronously; the other end of each mass block 103 is provided with a friction plate 102, and each friction plate 102 is in continuous contact with the friction layer 101 surrounding the outside of each mass block 103, forming a friction pair to generate damping force. As the speed of the screw 21 increases, the outward extension plate 104 has a tendency to move away from the screw 21 under the action of centrifugal force, so the pressure between each friction plate 102 and the friction layer 101 changes, thereby realizing variable output of damping force when the speed is changed; the invention has a simple structure and high damping efficiency, which can effectively reduce costs and extend service life.

[0028] 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 rotational speed damper, characterized in that: include: Sleeve component, screw component, rotating disk component and friction damping component; The screw component is arranged in the sleeve component, and the screw component and the sleeve component can move relative to each other; The rotating disk component is arranged in the sleeve component, the rotating disk component comprises an elastic body, an inner stiffening plate and an outer extension plate, the inner stiffening plate is fixedly connected to the screw component, the elastic body is arranged on the inner stiffening plate, the outer extension plate is arranged on the elastic body, and the screw component is used to drive the rotating disk component to rotate; The friction damping component comprises a friction layer and a mass block, wherein the friction layer is arranged on the inner side wall of the sleeve component, one end of the mass block is connected to the overhanging plate, and the other end of the mass block is provided with a friction plate, the friction layer and the friction plate form a friction pair, and the overhanging plate has a tendency to move away from the screw component under the centrifugal force of the elastic body, so as to increase the pressure between the friction layer and the friction plate; 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 inner stiffening plate; The sleeve component is a rotating body structure, and the center line of the screw coincides with the center line of the sleeve component; The friction layer is an annular structure, the outer wall of the friction layer is fixedly connected to the inner wall of the sleeve component, and the inner wall of the friction layer is in contact with the friction plate; The overhanging plates and the mass blocks are arranged in multiple groups, and each of the overhanging plates is arranged in a circular array on the elastomer, one end of each of the overhanging plates is embedded in the elastomer, and the other end of each of the overhanging plates protrudes outward and is extended radially along the screw component.

2. The rotation speed type damper according to claim 1, characterized in that: The inner stiffening plates are arranged in a plurality of groups, each of the inner stiffening plates and each of the outer extension plates are arranged at staggered intervals, each of the inner stiffening plates is arranged to extend radially along the screw component, and each of the inner stiffening plates is buried in the elastomer.

3. The rotation speed type damper according to claim 1, characterized in that: One end of the screw rod is nested in the sleeve component, and the other end of the screw rod is provided with a first earring.

4. The rotation speed type damper according to claim 3, 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.

5. The rotation speed type damper according to claim 4, 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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