CN209909052U - Cylindrical friction damper - Google Patents

Abstract

The utility model discloses a cylindrical friction damper, which comprises an outer cylinder, a movable cylinder which is sleeved in the outer cylinder, and a friction layer is lined between the movable cylinder and the outer cylinder; The cylinder has an axis, and the movable cylinder is cut into cylinder lobes by a plane passing through the axis; the inner peripheral surface of the movable cylinder has a conical first inner peripheral surface part and a conical second inner peripheral surface part A guide rod is arranged along the axis, and a first cone ring and a second cone ring which press against the first inner peripheral surface sub-section and the second inner peripheral surface sub-section respectively are set on the movable sleeve on the guiding rod; The outer end of a cone ring is provided with a first nut screwed on the guide rod, and the outer end of the second cone ring is provided with a second nut screwed on the guide rod. The output of the damper can be adjusted independently without adding additional components, and in the case of mass components, dampers with different outputs can be formed to reduce the manufacturing cost.

Description

A cylindrical friction damper

technical field

The utility model relates to the field of anti-seismic fortification of buildings and bridges, in particular to a cylindrical friction damper.

Background technique

As an effective energy dissipation and vibration reduction device, dampers are widely used in seismic fortification fields such as buildings and bridges.

A damper with a cylindrical outer peripheral surface is widely used due to its uniform force in the radial direction. Since the dampers need to be designed according to the different seismic requirements of each building, for different buildings, the required number and structure of the dampers and the output of each damper are different, although the approximate structure of the dampers can be the same , or use the same components, but due to the different requirements for the output of each damper, sometimes the output of a single damper needs to be adjusted separately, which requires secondary processing of some of the components to make the damper To meet specific needs, this increases the manufacturing cycle and expense of a single damper.

Utility model content

The purpose of the present invention is to overcome the above defects and provide a damper whose output can be adjusted independently without additional components. In the case of batch components, dampers with different outputs can be formed to reduce manufacturing costs. Cost, the specific technical solutions are:

A cylindrical friction damper comprises a cylindrical outer cylinder, the outer cylinder has a cylindrical inner peripheral surface, a movable cylinder is arranged in the outer cylinder, and the movable cylinder is connected with the movable cylinder. A friction layer is lined between the outer cylinders; the movable cylinder has an axis, and the movable cylinder is cut into at least two cylinder lobes by a plane passing through the axis;

One side of the axial direction of the movable cylinder is set as the first direction, and the other side is set as the second direction, and the inner peripheral surface of the movable cylinder has a tapered first inner peripheral surface subsection and a tapered first inner peripheral surface. Two inner peripheral surface subdivisions, the diameter of the first inner peripheral surface subdivision becomes larger along the axis direction from the first set position of the central part of the inner peripheral surface of the movable cylinder toward the end in the first direction; The diameter of the two inner peripheral surface sub-sections becomes larger along the axial direction from the second set position of the central part of the inner peripheral surface of the movable cylinder toward the end in the second direction;

A guide rod is arranged along the above-mentioned axis, and a first cone ring and a second cone ring are movably sleeved on the guide rod, wherein the outer peripheral surface of the first cone ring is pressed against the first inner peripheral surface subsection, and is connected with the first cone ring. The first inner peripheral surface subsection is in surface contact, and the outer peripheral surface of the second cone ring is pressed against the second inner peripheral surface subsection and is in surface contact with the second inner peripheral surface subsection; the first cone ring and the second cone There is a space between the rings;

One end of the first cone ring facing the first direction is provided with a first nut screwed on the guide rod, and one end of the second cone ring facing the second direction is provided with a second nut screwed on the guide rod; By screwing at least one of the first nut and the second nut, the distance between the two adjacent cylinder lobes in the direction perpendicular to the axis can be adjusted, so as to adjust the pressure of the movable cylinder to the outer cylinder.

In this application, the inner cylinder is set as a split structure, and the same components can be used to form dampers with different outputs. After the basic assembly of the damper is completed, according to different output requirements, screw the first nut and the second nut, so that each cylinder valve can move outward, and test it. When the output requirements are met, the first nut can be locked. Nut and second nut and do the rest of the damper assembly. By using the same structural components, dampers with different outputs can be formed, which facilitates batch processing of each structural component and reduces the manufacturing cycle and cost of the damper.

Further, a first spring is arranged between the first nut and the first cone ring; or, a second spring is arranged between the second nut and the second cone ring; or, a second spring is arranged between the first nut and the first cone ring A first spring is arranged between, and a second spring is arranged between the second nut and the second cone ring. Preferably, both the first spring and the second spring are disc springs.

After the springs including the first spring and the second spring are arranged, the elasticity of the springs can reduce the instantaneous impact force of the external force on the damper and improve the service life of the damper.

Further, two limiting portions are screwed on the guide rod, and the two limiting portions are respectively located on both sides of the movable cylinder, and are respectively pressed against the end surfaces of both ends of the movable cylinder. The two limit parts can be used to form each cylinder lobe as a whole, so as to avoid large unevenness on the entire damper due to the inconsistent movement of each cylinder lobe relative to the outer cylinder when subjected to external force The internal stress of the damper will also reduce the service life of the damper when it affects the output of the damper.

Further, the friction layer is fixed on the inner peripheral surface of the outer cylinder; the friction layer is a cylinder with an opening on one side, and the opening penetrates the end faces of both ends of the cylinder in the axial direction and penetrates the cylinder in the radial direction inside and outside; or the friction layer is an integral cylinder.

Among the above-mentioned different schemes, selection can be made according to different requirements and processing conditions. After an opening is provided on the cylinder as the friction layer, even if the outer diameter of the cylinder as the friction layer is slightly smaller than the inner diameter of the inner peripheral surface of the outer cylinder, the cylinder can be tightly fitted on the outer cylinder. on the inner circumference. Of course, in the case of very fine processing, the friction layer can also be an integral cylinder, that is, a cylinder without the above-mentioned opening is used.

Alternatively, the friction layer is fixed on the outer peripheral surface of the movable cylinder, at least one friction plate is provided on the outer surface of each cylinder lobe, and the friction plates on all the cylinder lobes together form the friction layer. In the present application, the outer surface of the cylinder lobe is formed by the outer peripheral surface of the movable cylinder. The friction plate is arranged on the outer side of the cylinder flap, which has the advantage of more convenient processing. Due to the larger operating space, a single-layer or multi-layer friction plate can be arranged on the outer side of the steel cylinder flap to form friction Floor.

Specifically, the friction layer is made of any one of copper plate, aluminum plate, stainless steel plate or polymer material. The above-mentioned materials are all excellent materials for making the friction material layer, which can ensure the output of the present invention.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a view in the direction A-A of FIG. 1 .

FIG. 3 is a schematic structural diagram of another embodiment of the present invention.

Detailed ways

Referring to FIG. 1 , a cylindrical friction damper includes a cylindrical outer cylinder 10 , the outer cylinder 10 has a cylindrical inner peripheral surface 101 , and a The movable cylinder 30 is lined with a friction layer 20 between the movable cylinder and the outer cylinder; the movable cylinder has an axis 900, and the movable cylinder 30 is cut into two cylinder lobes by the plane passing through the axis, please simultaneously Referring to FIG. 2 , for the sake of clarity, the two cylinder lobes are respectively referred to as the first cylinder lobe 301 and the second cylinder lobe 302 , and there are two small gaps 305 between the circumferential end faces of the two cylinder lobes.

One side of the axial direction of the movable cylinder is set as the first direction M, and the other side is set as the second direction N. In FIG. 1, the arrow M marked at the appropriate position represents the first direction M, and the arrow N represents the second direction. direction N. The inner peripheral surface of the movable cylinder 30 has a conical first inner peripheral surface sub-section 31 and a conical second inner peripheral surface sub-section 32, and the diameter of the first inner peripheral surface sub-section 31 along the axial direction is determined by The first set position of the central portion of the inner peripheral surface of the movable cylinder tube becomes larger toward the end in the first direction M. The diameter of the second inner peripheral surface sub-section 32 increases from the second set position of the central portion of the inner peripheral surface of the movable cylinder toward the end in the second direction N in the axial direction.

A guide rod 61 is arranged along the axis 900, on which a first cone ring 40 and a second cone ring 50 are movably sleeved, wherein the outer peripheral surface 41 of the first cone ring 40 is pressed against the first inner peripheral surface. part 31 and in surface contact with the first inner peripheral surface sub-section 31 . The outer peripheral surface 51 of the second cone ring 50 is pressed against the second inner peripheral surface sub-section 32 and is in surface contact with the second inner peripheral surface sub-section 32; an interval H.

One end of the first cone ring 40 facing the first direction M is provided with a first nut 62 screwed on the guide rod 61 , and a first spring 64 is provided between the first nut 62 and the first cone ring 40 . One end of the second cone ring 50 facing the second direction N is provided with a second nut 63 screwed on the guide rod 61 , and a second spring 65 is provided between the second nut 63 and the second cone ring 50 . The first spring 64 and the second spring 65 are both disc springs.

In this embodiment, springs are provided between the first cone ring and the first nut and between the second cone ring and the second nut. It can be understood that in other embodiments, only the first cone ring can be installed A spring is arranged between the first nut or between the second cone ring and the second nut, or the spring is cancelled.

When at least one of the first nut 62 and the second nut 63 is tightened, the first cone ring 40 and the second cone ring 50 can be pushed close to each other, and the cylinder valve can expand outward, so that the adjacent two The distance between the cylinder lobes in the direction perpendicular to the axis increases, so that the pressure of the movable cylinder on the outer cylinder increases, increasing the output of the damper; after loosening at least one of the first nut 62 and the second nut 63 Or, under the push of the internal stress of the movable cylinder and the outer cylinder, the first cone ring 40 and the second cone ring 50 are kept away from each other, and the cylinder lobes contract outward, so that the space between the two adjacent cylinder lobes is The distance is reduced, so that the pressure of the movable cylinder tube to the outer cylinder tube is reduced, and the output of the damper is reduced. That is, by screwing at least one of the first nut and the second nut, the distance between the two adjacent cylinder lobes can be adjusted to adjust the pressure of the movable cylinder to the outer cylinder, and thereby adjust the damper output.

Referring to FIG. 2 , in this embodiment, the friction layer 20 is a stainless steel cylinder with an opening 201 on one side, and the stainless steel cylinder is fixed on the inner peripheral surface 101 of the outer cylinder 10 . The openings 201 on the stainless steel cylinder penetrate the end faces of both ends of the cylinder in the axial direction, and penetrate the inside and outside of the cylinder in the radial direction. After an opening is provided, even if the outer diameter of the stainless steel cylinder is slightly smaller than the inner diameter of the inner peripheral surface 101 of the outer cylinder 10, the stainless steel cylinder can be tightly attached to the inner peripheral surface of the outer cylinder. Of course, in the case of very fine processing, the friction layer can also be an integral stainless steel cylinder, that is, a stainless steel cylinder without the above-mentioned opening is used.

It can be understood that, in other embodiments, the above-mentioned stainless steel cylinder can also be replaced by a cylinder made of a steel plate or an aluminum plate, or a polymer material can be used to make the friction layer.

The friction layer can also be set in the following ways. For example, a friction plate is arranged on the outer side of each cylinder lobe, and the friction plates on all the cylinder lobes form a friction layer together, that is, the friction layer is fixed on the movable cylinder. on the peripheral surface. The number of friction plates on the outer side of each cylinder lobe can be set according to specific requirements. One friction plate can be provided on each cylinder lobe, or multiple friction plates can be scattered on each cylinder lobe.

In this embodiment, the friction layer is a single layer. It can be understood that, in other embodiments, the friction layer may be formed by stacking multiple layers of plates or bobbins of the same material or different materials.

Please continue to refer to FIG. 1 , a first end plate 11 is installed on the end of the outer cylinder 10 facing the first direction M, and the guide rod 61 extends towards the first direction M, penetrates the first end plate 11 and protrudes out of the outer cylinder 10 . A first connecting portion is formed, and the first connecting portion is specifically a first mounting earring 13 having a first mounting hole 131 . A second end plate 12 is mounted on the end of the outer cylinder 10 facing the second direction N, and a second connecting portion is mounted on the outside of the second end plate 12 , and the second connecting portion specifically has a second mounting hole 141 . The second mounting earrings 14. The first mounting earrings 13 and the second mounting earrings 14 are used to mount the damper on the corresponding building.

Example 2

Please refer to FIG. 3. This embodiment is an improvement on the basis of Embodiment 1. The same symbols in FIG. 3 and FIG. 1 represent the same technical features. Some technical features in FIG. 3 will not be repeated. For details, please refer to the embodiments. 1.

In this embodiment, both the first nut 62 and the second nut 63 are completely accommodated in the inner cavity formed by the movable cylinder barrel 30 . Two limiting portions are screwed on the guide rod 61 . For the sake of clarity, the two limiting portions are the first limiting portion 71 and the second limiting portion 72 respectively. The first limiting portion 71 is screwed on the guide rod 61 by means of threads, and is pressed against the end surface of the end face of the movable cylinder 30 facing the first direction M. As shown in FIG. The second limiting portion 72 is screwed on the guide rod 61 by means of threads, and is pressed against the end surface of the end face of the movable cylinder 30 facing the second direction N.

Claims (7)

1. A cylindrical friction damper, characterized in that it comprises a cylindrical outer cylinder, the outer cylinder has a cylindrical inner peripheral surface, and a movable cylinder is arranged in the outer cylinder, A friction layer is lined between the movable cylinder and the outer cylinder; the movable cylinder has an axis, and the movable cylinder is cut into at least two cylinder lobes by a plane passing through the axis; One side of the axial direction of the movable cylinder is set as the first direction, and the other side is set as the second direction, and the inner peripheral surface of the movable cylinder has a tapered first inner peripheral surface subsection and a tapered first inner peripheral surface. Two inner peripheral surface subdivisions, the diameter of the first inner peripheral surface subdivision becomes larger along the axis direction from the first set position of the central part of the inner peripheral surface of the movable cylinder toward the end in the first direction; The diameter of the two inner peripheral surface sub-sections becomes larger along the axial direction from the second set position of the central part of the inner peripheral surface of the movable cylinder toward the end in the second direction; A guide rod is arranged along the above-mentioned axis, and a first cone ring and a second cone ring are movably sleeved on the guide rod, wherein the outer peripheral surface of the first cone ring is pressed against the first inner peripheral surface subsection, and is connected with the first cone ring. The first inner peripheral surface subsection is in surface contact, and the outer peripheral surface of the second cone ring is pressed against the second inner peripheral surface subsection and is in surface contact with the second inner peripheral surface subsection; the first cone ring and the second cone There is a space between the rings; One end of the first cone ring facing the first direction is provided with a first nut screwed on the guide rod, and one end of the second cone ring facing the second direction is provided with a second nut screwed on the guide rod; By screwing at least one of the first nut and the second nut, the distance between the two adjacent cylinder lobes in the direction perpendicular to the axis can be adjusted, so as to adjust the pressure of the movable cylinder to the outer cylinder. 2. The cylindrical friction damper according to claim 1, characterized in that, A first spring is provided between the first nut and the first cone ring; or, A second spring is provided between the second nut and the second cone ring; or, A first spring is arranged between the first nut and the first cone ring, and a second spring is arranged between the second nut and the second cone ring. 3 . The cylindrical friction damper according to claim 2 , wherein the first spring and the second spring are both disc springs. 4 . 4. The cylindrical friction damper according to claim 1, characterized in that, Two limit parts are screwed on the guide rod, and the two limit parts are respectively located on both sides of the movable cylinder, and respectively press against the end surfaces of the two ends of the movable cylinder. 5. The cylindrical friction damper of claim 1, wherein the friction layer is fixed on the inner peripheral surface of the outer cylinder; The friction layer is a cylinder with an opening on one side, and the opening penetrates the end faces of both ends of the cylinder along the axis direction, and penetrates the inside and outside of the cylinder along the radial direction; Or the friction layer is an integral cylinder. 6. The cylindrical friction damper of claim 1, wherein The friction layer is fixed on the outer peripheral surface of the movable cylinder, at least one friction plate is arranged on the outer surface of each cylinder lobe, and the friction plates on all the cylinder lobes form the friction layer together. 7 . The cylindrical friction damper according to claim 5 or 6 , wherein the friction layer is made of any one of copper plate, aluminum plate, stainless steel plate or polymer material. 8 .

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