JP2013040643A - Torsional damper, and vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torsional damper which enables high damper effect to be obtained and moreover is excellent in compactness by adding an artifice to the torsional structure of a torsion bar spring.SOLUTION: This device is composed of the torsion bar spring 11, a spring holder 12 which receives one end of the torsion bar spring 11 in condition incapable of rotating, a rotary damper 13, a rotation link 14 which applies torsional load to a torsional end portion 16 of the torsion bar spring 11 and a reverse rotation link 15 which is mounted to the spring holder 12 and is configured to reveal the damper effect by applying reverse torsion on both ends of the torsion bar spring 11 by means of applying reverse torque on the rotation link 14 and the reverse rotation link 15 and rotating the rotary damper 13 by the torsional rotation.

Description

  The present invention relates to a torsion damper and a vibration control device using the torsion damper.

  A torsion damper composed of a combination of a rotary damper and a torsion bar spring has been conventionally used for a shock absorber such as a furniture lid (Patent Document 1).

  In this configuration, a cylindrical rotating body is housed in a bottomed cylindrical case, and a viscous fluid is sealed between the inner diameter surface of the case and the rotating body. A torsion bar spring is inserted into the cylindrical body. One end of the torsion bar spring is fixed to the inner bottom surface of the case, and the other end is engaged with the rotating body. While fixing a case to an apparatus, a rotary body is connected with the rotating shaft of a buffer object (for example, lid of a piano). When the lid is opened and closed, the rotating body applies a torsional load to one end of the torsion bar spring, and the rotary damper is actuated to perform a buffering action as the torsion bar spring rotates. The reaction force on the fixed end side against the torsional load acting on the torsion bar spring is received by the fixed portion of the apparatus through the case.

  Moreover, as a vibration control device for a building, a torsion damper in which a viscoelastic member such as rubber is interposed between an inner cylinder and an outer cylinder, which are fitted so as to be rotatable relative to each other, is used. In the corner portion to be made, there is known one in which an inner cylinder is fixed to a column and an outer cylinder is fixed to a beam (Patent Document 3). The inner cylinder rotates relative to the outer cylinder due to the rotation caused by the inclination of the column, thereby controlling the vibration. The reaction force against the torsional load applied from the inner cylinder to the outer cylinder is received by the foundation of the building through the beam fixing the outer cylinder.

  In addition, as a damping device for a ramen structure composed of columns and beams, a support plate is attached to a connecting portion at a diagonally opposed position in a rectangular space composed of the columns and beams of the ramen structure. It is known that two diagonal positions of a quadrilateral link are attached by a connecting pin between the support plates, and a piston cylinder type oil damper is interposed between the intermediate connecting pins (Patent Document 2). As the distance between the intermediate connecting pins changes due to the inclination of the column, the oil damper operates to control the vibration.

  A crank arm mechanism is provided between each intermediate connection pin and the left and right columns in order to prevent the quadrilateral link from being deformed in the out-of-plane direction due to the force acting on the intermediate connection pin to which the oil damper is connected.

  In the case of this vibration control device, the piston and cylinder simultaneously move straight in opposite directions, and the reaction force of both loads is applied to the foundation of the building via the intermediate connecting pin, quadrilateral link and bearing plate that are connected to each other. Received by. Both ends of the oil damper are connected to the intermediate connecting pin, the intermediate connecting pin part moves straight in the opposite direction, and the reaction force is received by the foundation of the building via the quadrilateral link and the support plate The structure differs from the two reaction force support structures.

Japanese Utility Model Publication No. 62-81739 JP 2011-12708 A Japanese Patent Laid-Open No. 2004-232202

  In the structure in which a torsion load is applied to one end of a torsion bar spring while the other end is fixed, as in the torsion damper disclosed in Patent Documents 1 and 2, the amount of torsion applied to the torsion bar spring Is limited to the torsional load applied to one end. Since the rotary damper exhibits a damper effect having a magnitude corresponding to the torsion amount of the torsion bar spring, there is a certain limit to the damper effect due to the limited torsional load.

  In the case of Patent Document 3, both the piston and cylinder of the oil damper are simultaneously operated in opposite directions, so that the compression load on the internal oil is doubled compared to the case where either one is operated, and the damper effect is also correspondingly increased. growing.

  However, since the torsion damper is provided between the intermediate connecting pins of the quadrilateral link, the torsion damper occupies the central portion of the quadrangular space made up of columns and beams, and there is a problem of lack of compactness.

  Therefore, the present invention provides a torsion damper that has a high damper effect and is excellent in compactness by adding a device to the torsion structure of the torsion bar spring, and a vibration control device using the torsion damper. Let it be an issue.

  In order to solve the above problems, a torsion damper according to the present invention includes a torsion bar spring having a torsion end portion at one end and a fixed end portion at the other end, and the fixed end portion containing the torsion bar spring. A damper unit is configured by a spring holder that supports the rotor in a relatively non-rotatable state and a rotary damper in which a casing is concentrically coupled to the spring holder, and a torsion bar spring is twisted at the rotation center of the rotary damper. In a torsion damper having an end portion penetrated so as to be integrally rotatable, a rotation means for applying a torsional load to the torsion end portion, and a fixing means for the spring holder, the rotation means is a screw for the torsion bar spring. The fixing means comprising a rotating link attached to the edge It is constituted by a reverse rotation link integrated with the damper unit and coaxially attached to the rotation link, and reverse torque (reverse torque) is applied to the rotation link and the reverse rotation link from the outside. .

  By applying reverse torque to the rotating link and the rotating link, the rotating link twists the torsion end of the torsion bar spring in a certain direction by a certain amount, and at the same time, the rotating link rotates the torsion bar spring via the spring holder. Twist the fixed end in the opposite direction by the same amount. The rotary damper is rotated from the shaft side as the torsion bar spring is twisted, and is also rotated from the casing side as the rotary damper casing or spring holder is reversely rotated. The As a result, the rotary damper exhibits a large damper effect based on the amount of rotation from the shaft side and the amount of rotation from the casing side.

  The damper action is performed not only by the rotary damper but also by torsion of the torsion bar spring itself, and both damper actions combine to absorb vibration energy. As a result, a damper effect is imparted to the rotation of the rotation link and the reverse rotation link, that is, the change in the opening angle of both links.

  The reaction force on the fixed end side against the torsional load applied from the rotary link is received by the fixed portion of the apparatus through the fixed end portion of the torsion bar spring, the spring holder, and the reverse rotation link. The reaction force on the side of the torsional end against the reverse torsional load applied from the reverse rotation link is received by the fixed part of the device via the torsion end of the torsion bar spring and the rotation link.

  As means for applying a reverse torque from the outside to the free ends of the rotating link and the reverse rotating link, the sub links are connected to the free ends of the rotating link and the reverse rotating link so as to be relatively rotatable. The other end of the link is connected to be relatively rotatable to form a quadrilateral link as a whole, and the connecting end of the other end of each of the sub-links is connected to the fixed part of the device to be relatively rotatable. Can be taken.

  According to the above configuration, when the quadrilateral link changes in a direction to reduce the distance between the intermediate connection points according to the positive amplitude of vibration applied from the device fixing portion, the opening angle of the rotation link and the reverse rotation link is reduced. Thus, reverse torque is generated in each link. When the vibration amplitude changes in the negative direction, both links move in the direction in which the opening angle increases, so the direction of the reverse torque changes.

  As another means for applying a reverse torque from the outside, it can be constituted by a torsion damper comprising another damper unit, a rotary link and a reverse rotation link having the same structure as the damper unit, the rotary link and the reverse rotation link. A damper unit of the torsion damper is mounted on the fixed part of the device so as to be relatively rotatable, and the free ends of both rotating links and the free ends of the reverse rotating links are connected to each other so as to be able to rotate relative to each other to form a quadrilateral link. There is. According to this configuration, the damper effect is doubled by the interlocking of the two torsion dampers.

  As another means for applying reverse torque from the outside, it is possible to adopt a configuration in which the free end portions of the rotary link and the reverse rotary link are pressed against the flat surface of the device fixing portion.

  In this case, the flat surface is pushed up from the origin position by the vibration from the apparatus fixing portion, and the opening angle of the rotating link and the reverse rotating link is increased, so that reverse torque is applied to both links. When the direction of vibration changes from that state, the direction of the reverse torque changes so that the opening angle is reduced.

  As the rotary damper, a damper casing whose one end in the axial direction is opened, a lid member fixed to the open end, a chamber closed by the lid member, the closed end of the casing and the lid member are liquid-tight. A shaft that is held and rotatably penetrated, a disk that is integrated with the shaft and is rotatably held inside the chamber, and a viscous fluid sealed in the chamber can be used.

  The rotary damper performs a damper action by rotating the shaft and the disc with respect to the viscous fluid and the damper casing to which the shaft and the disk are attached. On the contrary, the damper casing and the viscous liquid adhering to the damper casing can perform the damper action by rotating with respect to the shaft and the disk. In short, since the damper action is performed by the relative rotation of the shaft and disk group and the viscous fluid and damper casing group, the damper effect is doubled compared to the case where rotation is applied only from one side.

  As a vibration control device using the torsion damper having the above-described configuration that applies a reverse torque using a quadrilateral link, there is an upper or lower bearing at a diagonal position of a rigid frame structure composed of columns and beams constructed on a foundation. A link shaft that supports the rotation link of the torsion damper can be rotatably mounted on one of the plates, and the rotation support link and the reverse rotation rotation link can be relatively rotatably connected to the other support plate. .

  In the vibration control device having the above-described configuration, when vibration is applied to the ramen structure from its foundation, the two pillars of the ramen structure are inclined in the left-right direction and repeatedly deformed into a parallelogram. Then, the quadrilateral link provided between the diagonal positions is also deformed, and reverse torque is applied to the rotating link and the reverse rotating link, respectively. As a result, the damper unit attached to one of the support plates is activated, and the vibration control effect is exhibited.

  Furthermore, as a vibration control device when the vibration control target is a table that is slidably installed on the floor surface of the foundation, a rectangular table that is the vibration control target is a plane defined by XY coordinates on the floor surface of the foundation. The table is supported so that it can slide in any direction, and the four side surfaces of the table are provided along the X-axis direction and the Y-axis direction, respectively, and support plates are respectively provided on the base side and the table side corresponding to the side surfaces of the table. The damper unit of the torsion damper is attached to either the base side or the table side support plate so as to be rotatable with the center of rotation in the Z-axis direction, and the ends of the both sub links are relative to the other support plate. The structure connected so that rotation was possible can be taken.

In the case of the above configuration, one torsion damper is provided for each quadrilateral link provided corresponding to each side of the table.
By configuring the quadrilateral link by a combination of two torsion dampers, it is possible to adopt a configuration in which two torsion dampers are installed for each quadrilateral link provided corresponding to each side of the table.

  Furthermore, as a vibration control device when the vibration control target is a table that is slidably installed on the floor surface of the foundation, a rectangular table that is the vibration control target is a plane defined by XY coordinates on the floor surface of the foundation. Slidably supported in any direction, and four side surfaces of the table are provided along the X-axis direction and the Y-axis direction, respectively, and an inner wall surface is provided on the foundation corresponding to each side surface. The wall is provided with a recess open to the table side, and the recess is provided with a block that can move only in the Z direction, and a support plate is attached to each of the block side and the table side, either on the block side or on the table side The damper unit of the torsion damper is rotatably attached to the other support plate with the center of rotation in the Z-axis direction. End of the link is rotatably connected, there is a configuration in which the free end is pressed against the lower surface of the overhang portion of the concave portion of the V-shaped link of the torsion damper, which is fixed to the upper surface of the block.

  According to the above configuration, not only the damping effect in the XY direction of the table but also the damping effect in the Z direction can be obtained.

  Since the torsion damper according to the present invention applies a torsional load to the torsion bar spring from both ends, the amount of torsion is doubled compared to the case where it is applied from one end. As a result, the amount of operation of the rotary damper is doubled, so that a large damper effect is obtained.

  In addition, the damper unit constituting the torsion damper is attached in the axial direction of the connecting pin to the link coupling portion of the rotary link and the reverse rotary link, and thus has a compact configuration.

  Furthermore, the damping device using the torsion damper can be constructed in a compact manner because the damper unit can be provided at two link connecting portions on the opposite side of the quadrilateral link, and at most two per quadrilateral link. The damper unit can be installed, so a high vibration control effect can be obtained.

FIG. 1 is a partially omitted perspective view of the torsion damper according to the first embodiment. FIG. 2 is a partially omitted enlarged cross-sectional view taken along line X1-X1 of FIG. FIG. 3 is a partially omitted exploded perspective view. FIG. 4 is a front view of the vibration control device of the second embodiment. FIG. 5 is an enlarged sectional view taken along line X2-X2 of FIG. FIG. 6 is a front view of the operating state. FIG. 7 is a front view of another operating state. FIG. 8 is a front view of the vibration damping device of the third embodiment. FIG. 9 is a longitudinal sectional view of the fourth embodiment. 10 is a cross-sectional view taken along line X3-X3 of FIG. FIG. 11 is a cross-sectional plan view of the fifth embodiment. FIG. 12 is a longitudinal sectional view of the sixth embodiment. 13 is a cross-sectional view taken along line X4-X4 of FIG. FIG. 14 is a cross-sectional plan view of the seventh embodiment. FIG. 15 is a transverse plan view of the eighth embodiment. FIG. 16 is a perspective view of the torsion damper in the Z direction. 17 is an enlarged cross-sectional view taken along line X5-X5 of FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
[Embodiment 1]

  The torsion damper 10 according to the first embodiment shown in FIGS. 1 to 3 includes a torsion bar spring 11, a spring holder 12 storing the torsion bar spring 11, a damper unit 20 constituted by a rotary damper 13, and torque applied to the damper unit 20. The rotating link 14 and the reverse rotating link 15 are configured to transmit.

  As shown in FIG. 2, the torsion bar spring 11 is formed of a steel rod, and is provided with a torsion end 16 at one end and a fixed end 17 at the other end, and is fixed to the torsion end 16. The end portion 17 is provided with two parallel flat surfaces 18 so as to be able to prevent rotation at the fitting portion with the mating member. A round bar portion 19 having a smaller diameter is provided between the twisted end portion 16 and the fixed end portion 17. The round bar portion 19 is twisted with a restoring elasticity around the axis.

  The spring holder 12 is constituted by a cylindrical body whose one end is closed, a fixing hole 21 is provided on the inner end surface of the closing part, and the fixed end 17 of the torsion bar spring 11 cannot rotate with respect to the spring holder 12. It is fitted in a proper state. One end of the reverse rotation link 15 positioned by the flange 12a is fitted to the outer peripheral surface of the open end of the spring holder 12, and is fixed by welding or the like. The connection recessed part 22 (refer FIG. 3) is provided in two places of the center symmetry of the fitting fixed part of the reverse rotation link 15. As shown in FIG.

  The length of the spring holder 12 is such that the torsion end 16 is exposed to the outside of the spring holder 12 with the fixed end 17 side of the torsion bar spring 11 fitted in the fixing hole 21 therein. It is formed. A screw shaft 16a is provided at the tip of the torsion end 16 (see FIG. 3).

  As shown in FIG. 2, the rotary damper 13 includes a cylindrical damper casing 23 whose one end in the axial direction is open and whose other end is closed, a lid member 24 fixed to the open end of the damper casing 23, The chamber 25 closed by the lid member 24, the closed end of the damper casing 23, and the shaft 26 that penetrates the lid member 24 in a rotatable manner while maintaining liquid tightness.

  Further, a disk 27 integrated with the shaft 26 and rotatable inside the chamber 25, and a viscous fluid 28 such as silicone oil enclosed in the chamber 25 are constituent members. The inner hole 30 of the shaft 26 is formed to have the same shape as the cut shape of the torsion end 16 of the torsion bar spring 11.

  The disk 27 is provided with a required number of adjustment holes 31, and the damper characteristics are adjusted according to the number of the adjustment holes 31 and the size of the diameter. Connecting protrusions 29 are provided at two centrally symmetrical positions on the outer surface of the closed end of the damper casing 23.

  The spring holder 12 is abutted concentrically with the closed end, and a connection projection 29 is inserted into the connection recess 22 of the reverse rotation link 15 integral with the spring holder 12, and the reverse rotation link 15 and the damper casing 23 are joined and integrated by welding or the like. It becomes. Thereby, the spring holder 12, the reverse rotation link 15, the damper casing 23, and the lid member 24 are concentrically connected.

  On the other hand, the torsion end portion 16 of the torsion bar spring 11 is inserted and fitted into the inner hole 30 of the shaft 26, and the slide bearing 32 is sandwiched between the exposed end of the torsion end portion 16 and the link hole of the rotary link 14. 33 (see FIG. 3) is fitted. The link hole 33 also has a cut shape that matches the cross-sectional shape of the twisted end portion 16. Further, the screw shaft 16 a at the tip of the torsion end portion 16 protrudes to the outside of the link hole 33 and is screwed by a nut 35 via a washer 34.

  The rotation link 14 and the reverse rotation link 15 constitute a V-shaped link 36 (see FIG. 1) with the shaft center of the torsion bar spring 11 as a common rotation center. The V-shaped link 36 has a constant opening angle θ when the torsion bar spring 11 is in a neutral state. Although each free end is provided with a connecting hole 37, it may not be provided.

  In addition, by setting the diameter and length of the spring holder 12 appropriately, it is possible to adopt a configuration in which the rotary damper 13 is fitted and integrated inside the open end.

    The torsion damper 10 according to the first embodiment is configured as described above. When this is used, as shown in FIG. 2, the torsional damper 10 is placed on the outer diameter surface of the damper casing 23 via the rolling bearing 38. A fixed portion such as a support plate 44 (see FIG. 4) of the device is rotatably held around the axis of the damper casing 23, that is, the link coupling of the V-shaped link 36.

  A reverse torque T is simultaneously applied from the device side to the free ends of the rotary link 14 and the reverse rotary link 15 constituting the V-shaped link 36. Assuming that an inward reverse torque T that reduces the opening angle θ of the V-shaped link 36 is applied as indicated by an arrow T in FIG. 1, the rotating link 14 applies to the torsion end 16 of the torsion bar spring 11. A clockwise twist load is applied.

  The shaft 26 and the disk 27 of the rotary damper 13 are united by the torsional rotation of the torsion end 16, and rotate with respect to the viscous fluid 28 and the damper casing 23 to which the viscous fluid 28 adheres. It acts as a damper. Since the sliding bearing 32 is interposed between the rotary link 14 and the rotary damper 13, it is possible to avoid the rotational torque of the rotary link 14 from reaching the damper casing 23.

  On the other hand, when a counterclockwise torsional load, that is, a reverse torsional load, is applied to the spring holder 12 and the damper casing 23 by the reverse rotation link 15, the fixed end 17 integral with the spring holder 12 is reversely twisted. Load is applied. Further, due to the counterclockwise rotation of the damper casing 23, the viscous fluid 28 and the damper casing 23 to which the viscous fluid 28 is attached rotate with respect to the disk 27 and the shaft 26 and exert a damper action on the rotation of the reverse rotation link 15.

  As described above, the reverse torque T is transmitted to the torsion end portion 16 and the fixed end portion 17 of the torsion bar spring 11, so that both end portions of the torsion bar spring 11 are twisted in the opposite direction, and both twists are twisted. A damper action is performed by the rotary damper 13 according to the amount. As a result, a damper effect is imparted to the rotation of the rotation link 14 and the reverse rotation link 15.

  Compared with the case where the torsional load is applied only by either the rotation link 14 or the reverse rotation link 15, a torsion bar spring 11 is given a torsion amount twice as large as a certain rotation angle, and the damper action is based on the torsion amount. Is performed, the damper effect is doubled.

  Since the damper effect is exhibited not only by the rotary damper 13 but also by the torsional elasticity of the torsion bar spring 11 itself, a great damper effect can be obtained by combining both effects.

  When the direction of the reverse torque applied to the rotating link 14 and the reverse rotating link 15 is changed, the torsional elasticity of the torsion bar spring 11 is released, and when it returns to the original state, the opening angle θ of the rotating link 14 and the reverse rotating link 15. Returns to the original size, that is, the origin position. At this time, the rotary damper 13 exhibits a damper action by reversing the direction of rotation.

  If the reverse torque exceeds the origin position, the rotary link 14 and the reverse link 15 operate in a direction to reduce the opening angle θ beyond the origin position, and the torsion bar spring 11 is twisted in the opposite direction. Jiru. The rotary damper 13 continues to rotate in the opposite direction and performs a damper action.

  Here, looking at the relationship with the conventional damper unit, in the conventional case (see Patent Document 1), a torsional load is applied only to the torsion end of the torsion bar spring 11, and the fixed end on the opposite side. It is configured to receive a reaction force against torsional load by directly fixing to the fixing portion of the apparatus. On the other hand, in the case of the present invention, a torsional load is applied to the torsion end 16 and the fixed end 17 respectively. The reaction force support structure is as follows.

That is, the reaction force against the torsional load acting on the torsion end 16 from the rotary link 14 is generated by a device (not shown) that generates torque T via the fixed end 17, the spring holder 12, and the reverse rotation link 15. Received by the fixed part. On the contrary, the reaction force against the reverse torsional load acting on the fixed end 17 from the reverse rotation link 15 is fixed to a device (not shown) that similarly applies the torque T via the torsion end 16 and the rotation link 14. Received by the department.
[Embodiment 2]

  The second embodiment shown in FIGS. 4 to 7 relates to a vibration control device using the torsion damper 10 and is suitable for vibration control of a rectangular building element composed of a column 41 and a beam 42, a so-called ramen structure 43. Is. An upper support plate 44 and a lower support plate 45 are respectively attached to corner portions at diagonal positions of the ramen structure 43.

  The damper unit 20 of the torsion damper 10 is rotatably supported on the upper support plate 44 via a rolling bearing 38 (see FIG. 5). The damper unit 20 is disposed in a direction orthogonal to a quadrangular surface including the column 41 and the beam 42. Further, the V-shaped link 36 constituted by the rotating link 14 and the reverse rotating link 15 extends in the center of the rectangular space in a V shape with a certain opening angle θ. Each link 14 and 15 is formed in the same length.

  The lower support plate 45 is coaxially connected to each end of the rotary sub link 47 and the reverse rotary sub link 48 by a connecting pin 39 extending in a direction perpendicular to the rectangular surface. These secondary links 47 and 48 are formed to have the same length as the rotary link 14 and the reverse rotary link 15, and the free ends thereof are linked to each other by intermediate connecting pins 49 and 50 so as to be relatively rotatable. A rhombus link 46 is constituted by these four links 14, 15, 47 and 48.

  The links 14, 15, 47 and 48 are not limited to the rhombus links 46, but may be quadrilateral links such as saddle-shaped links and parallelogram links. One torsion damper 10 is provided for such a quadrilateral link.

  The seismic isolation device of Embodiment 2 is as described above. When the ramen structure 43 to be controlled is maintained in a normal posture and is in a position where no torsional load is applied to the torsion bar spring 11, that is, at the origin position (see FIG. 4), the ramen is fixed from the foundation 40. It is assumed that earthquake vibration is applied to the structure 43. As shown in FIG. 6, a vibration external force F in the length direction of the beam 42 is applied from one end portion of the beam 42 (the end portion without the upper support plate 44) by the vibration, and the ramen structure 43 Is inclined from the two-dot chain line state to the solid line state by an angle δ.

  Along with the deformation, the distance between the intermediate connecting pins 49 and 50 is reduced, so that an inward reverse torque T of the same size is applied to the rotary link 14 and the reverse link 15 from the side of the sub links 47 and 48 at the same time. It is done. As a result, the V-shaped link 36 is deformed in a direction in which the opening angle θ is reduced.

  Due to the reverse torque T, a torsional load is applied to the torsion end 16 of the torsion bar spring 11 through the rotary link 14 in the torsion damper 10 (see FIG. 2). At the same time, a reverse torsional load is applied to the fixed end 17 via the reverse rotation link 15 and the spring holder 12, and the torsion bar spring 11 is twisted in the opposite direction from both ends.

  The reaction force against the torsional load applied to the torsion end 16 of the torsion bar spring 11 from the rotating link 14 side is the fixed end 17, the spring holder 12, the reverse rotation link 15, the reverse rotation sublink 48, and the support plate. After 45, you will be received on the foundation 40. Similarly, a reaction force against a reverse torsional load applied to the fixed end 17 from the reverse rotation link 15 side is applied to the foundation 40 via the torsion end 16, the rotation link 14, the rotation sublink 47, and the support plate 45. Can be received.

  Further, as the torsion bar spring 11 is twisted and rotated, the viscous fluid 28 and the damper casing 23 rotate relative to the shaft 26 and the disk 27 of the rotary damper 13, so that the rotating link 14 and the counter rotating link 15 are rotated. A damper effect is applied to the rotation.

  The rotation link 14 and the reverse rotation link 15 constitute a rhombus link 46, and the rhombus link 46 defines a distance between both the support plates 44, 45, so that a damper effect is applied to the rotation of the rotation link 14 and the reverse rotation link 15. As a result, a damper effect is exerted against deformation accompanying the vibration of the ramen structure 43.

  Contrary to the above, if an external vibration force F is applied from the upper support plate 44 side and is deformed by an angle δ in the opposite direction (see FIG. 7), the distance between the intermediate connecting pins 49, 50 is increased. An outward reverse torque T having the same magnitude is applied to the rotary link 14 and the reverse rotation link 15 at the same time, and the opening angle θ is deformed so as to increase.

  In this case, the torsional load acting on the torsion bar spring 11, its reaction force support structure, and the rotary damper 13 cause the damper action to be opposite in direction, but the description thereof is omitted because it is the same action. .

  As described above, when the vibration external force F due to seismic vibration acts on the ramen structure 43, opposite torsional loads are applied to both ends of the torsion bar spring 11 by the reverse torque T applied via the rhombus link 46. As a result, the rotary damper 13 exhibits a damper effect based on both twists, and at the same time, the damper effect by the torsion bar spring 11 itself is combined to exhibit a large damper effect.

  In this way, the vibration external force F generated by the earthquake vibration is rapidly controlled, and the ramen structure 43 returns to the original position which is the initial posture.

In the above description, the damper unit 20 is attached to the upper support plate 44. However, the damper unit 20 is attached to the lower support plate 45, and the end portions of the sub links 47 and 48 are attached to the upper support plate 44. It is also possible to adopt a configuration in which the two are connected so as to be relatively rotatable.
[Embodiment 3]

  In the case of Embodiment 3 shown in FIG. 8, the torsion damper 10 is provided on both the upper and lower support plates 44 and 45. The free ends of the rotary link 14 and the reverse rotary link 15 constituting the V-shaped links 36 of both torsion dampers 10 are linked by intermediate connecting pins 49 and 50, respectively, so that a rhombus link 46 is formed as a whole.

  According to the above configuration, since both torsion dampers 10 simultaneously perform the damper action when a vibration external force is applied, the vibration control effect is doubled compared to the case of the second embodiment.

As in Embodiment 3, two torsion dampers 10 having the same structure are attached between a pair of opposed support plates 44 and 45, and the free ends of the V-shaped link 13 are connected to each other to form a rhombus link 46. In this case, the entire structure is referred to as “composite torsion damper 10a” for convenience of the following description. In this composite torsion damper 10a, since two torsion dampers 10 are combined with one rhombus link 46, the damper effect (damping effect) is doubled compared to the case of the second embodiment.
[Embodiment 4]

  Embodiment 4 shown in FIG.9 and FIG.10 is related with the vibration control apparatus of the table 53 installed in the foundations 52, such as a construction part.

  This vibration control device includes a rectangular table 53 that is slidable in an arbitrary direction on a floor surface 55 surrounded by a rectangular inner wall surface 54 of a foundation 52, and four composites provided on each of the four sides. It is comprised by the combination with the torsion damper 10a.

  The table 53 is provided with support legs 56 at five locations in the center and four corners (see FIG. 10). A sliding sheet 57 is attached to the lower surface of each support leg 56 and can slide in any direction with respect to the floor surface 55. A caster may be attached to the bottom surface of the support leg 56 instead of the sliding sheet 57.

  Now, assuming XY coordinates (see FIG. 10) on the floor surface 55, each inner wall surface 54 of the foundation 52 is a surface along the X direction and the Y direction. Each side surface of the table 53 is installed in parallel to these inner wall surfaces 54, and the installation state is the origin position.

  A pair of opposed support plates 58 and 59 are attached to each inner wall surface 54 of the foundation 52 and a part of the lower surface of the table 53. A composite torsion damper 10a is provided between both bearing plates 58 and 59, respectively. The center of rotation of the damper unit 20 of each composite torsion damper 10a, that is, the axis of the link coupling of the V-shaped link 36 faces the Z direction perpendicular to the X and Y directions (see FIG. 9).

  The vibration control device of the fourth embodiment is configured as described above, and the vibration in the X direction generated in the foundation 52 is damped by the two composite torsion dampers 10a in the X direction. The vibration in the Y direction is attenuated by the two composite damper units 10a in the Y direction, and a seismic control effect is exhibited.

The vibration having an angle with respect to the X and Y directions is attenuated by the combined torsion damper 10a receiving the vibration component force in the X direction and the vibration component force in the Y direction, thereby exhibiting a damping effect.
[Embodiment 5]

  The fifth embodiment shown in FIG. 11 is obtained by changing a part of the fourth embodiment. That is, in this case, instead of using the composite torsion damper 10a, the damper unit 20 of the torsion damper 10 is rotatably attached to the support plate 58 on the foundation 52 side. A rotary sub link 47 and a reverse rotary sub link 48 are connected to the support plate 59 on the table 53 side by a connecting pin 39 so as to be relatively rotatable, and the free ends of the sub links 47 and 48 are connected to the rotary link 14 and the reverse rotary link 15. It is connected to the free end so as to be relatively rotatable, and constitutes a quadrilateral link.

A configuration in which the torsion damper 10 is attached to the support plate 59 on the table 53 side can also be adopted. In either case, since the number of torsion dampers 10 is halved, the damper effect, that is, the vibration control effect is also halved.
[Embodiment 6]

  Embodiment 6 shown in FIG.12 and FIG.13 adds the damping action of a Z direction to the damping device of the said Embodiment 4 (refer FIG. 9, FIG. 10). Since the structure which performs the vibration control effect | action of a X and Y direction is the same as that of the case of Embodiment 4, the description is abbreviate | omitted and it mainly demonstrates a different part.

  The different parts are the following parts. That is, a recess 61 that is open to the table 53 side is provided in an intermediate portion of the inner wall surface 54 of the foundation 52, and a block 62 that is movable only in the Z direction is provided in the recess 61. A support plate 58 is attached. In addition, the damper unit 20 of the Z-direction vibration damping torsion damper 10 is attached to the upper surface of the block 62, and the free ends of the rotary link 14 and the reverse rotary link 15 are brought into contact with the lower surface of the overhang portion 63 of the recess 61. .

  A guide rib 64 having a V-shaped cross section is provided on the inner wall surface facing the open surface of the recess 61, and a regulation rib 65 is also provided at the boundary between the bottom surface of the recess 61 and the floor surface 55 of the foundation 52. Movement in the Y direction is restricted. A sliding sheet 66 is provided on the inner side surface of the guide rib 64 so that the block 62 can freely slide in the Z direction (vertical direction). In addition, a cushion sheet 67 is provided on the bottom surface of the block 62 so as to absorb a shock when descending.

  The vibration damping device of the sixth embodiment is configured as described above, and the vibration of the table 53 in the X and Y directions is controlled by the damper action of the composite torsion damper 10a as in the case of the fourth embodiment. Done. The vibration in the Z direction is conducted to the block 62 through each composite torsion damper 10a, and moves the block 62 in the Z direction.

  The rotation link 14 and the reverse rotation link 15 of the torsion damper 10 for Z-direction vibration control attached to the upper surface of the block 62 are pressed against the overhang portion 63 and rotated in the direction in which the opening angle θ is enlarged, so that the respective directions are reversed. Is applied to the damper unit 20 to perform a damper action.

  When the block 62 moves downward from the above state, the rotating link 14 and the reverse rotating link 15 are rotated in the direction in which the opening angle θ is reduced, so that a damper action is performed, thereby performing vibration control in the Z direction.

In the above description, the case where four composite torsion dampers 10a are used is shown, and eight damper units 20 are provided as a whole. However, in some cases, the torsion dampers may be used instead of the composite torsion dampers 10a. 10 and a combination of the rotary sub-link 47 and the counter-rotating sub-link 48, thereby adopting a configuration in which four damper units 20 are provided as a whole (configuration of the fifth embodiment shown in FIG. 11). Can do.
[Embodiment 7]

  The vibration damping device of the seventh embodiment shown in FIG. 14 performs the vibration damping in the X and Y directions of the table 53 installed on the floor surface 55 of the foundation 52, as described in the fourth embodiment (FIG. 9). , See FIG. 10), but is different in the usage state of the torsion damper 10.

  That is, two support plates 58 are attached to each inner wall surface 54 of the foundation 52, and the torsion damper 10 attached to each support plate 58 is attached so that the damper unit 20 has a center of rotation in the Z direction. The free ends of the link 14 and the reverse rotation link 15 are pressed against the side surfaces of the table 53 facing each other.

  As shown in the figure, the torsion bar spring 11 of each torsion damper 10 is given a certain twist while the rotating link 14 and the reverse rotating link 15 are in contact with the table 53 with a certain opening angle θ. And that state is the origin position.

  When X-direction vibration is applied to the table 53, the opening angle θ of the rotation link 14 and the reverse rotation link 15 of one of the torsion dampers 10 facing in the X direction is enlarged, while the opening angle θ is reduced on the opposite side. Do. The same vibration control is performed for vibration in the Y direction. In the case of vibration having an angle with respect to the X and Y directions, the same vibration control is performed by the component force in the X direction and the component force in the Y direction.

In addition, when performing the vibration control action in the Z direction, a recess 61 is provided on the inner wall surface 54 in the same Z direction vibration control structure as that of the sixth embodiment (see FIGS. 12 and 13). A structure in which a block 62 movable only in the Z direction is housed and the free ends of the rotary link 14 and the reverse rotary link 15 of the torsion damper 10 installed on the upper surface of the block 62 are pressed against the overhang 63 is adopted. Can do.
[Embodiment 8]

  The damping device of the eighth embodiment shown in FIGS. 15 to 18 performs damping in the X, Y and Z directions of the table 53 installed on the floor surface 55 of the foundation 52. The relationship between the four side surfaces of the table 53 and the four inner side surfaces 54 of the base 52 is the same as in the above-described case (for example, see the description regarding FIG. 10 of the fourth embodiment).

  For vibration control in the X and Y directions, support plates 58 are provided at the four corners of the inner wall surface 54, and the torsion damper 10 (see Embodiment 1) is attached to each support plate 58. The rotation link 14 and the reverse rotation link 15 of each torsion damper 10 are pressed against both side surfaces sandwiching the corner portion of the table 53 with a constant opening angle θ, and are in the original position in that state.

  When the vibration external force of the earthquake occurring on the foundation 52 has an angle with respect to the X and Y directions in the horizontal plane, the rotation link 14 and the reverse rotation link 15 of the one torsion damper 10 in the diagonal position When the opening angle θ is increased, the other torsion damper 10 is reduced and the damper effect is exhibited in both. When the vibration external force is directed in the X direction or the Y direction, only one of the rotary link 14 or the reverse rotary link 15 is rotated, the other is pressed against the side surface of the table 53, and only the reaction force is supported. Do not rotate.

  As shown in FIG. 16, the torsion damper 10b used for the vibration control in the Z direction has the spring holder 12 in a rectangular tube shape, except that the reverse rotation link 15 is removed from the torsion damper 10 (see the first embodiment). The difference is that the mounting piece 68 for the inner wall surface 54 is provided in a part of the square cylindrical spring holder 12. Others have the same structure.

  That is, the torsion damper 10b accommodates the torsion bar spring 11 having a torsion end portion 16 at one end and a fixed end portion 17 at the other end, and the torsion bar spring 11, and the fixed end portion 17 cannot be relatively rotated. A damper unit 20 is constituted by the spring holder 12 supported in a state and the rotary damper 13 concentrically coupled to the spring holder 12.

  Further, a torsion end portion 16 of the torsion bar spring 11 is penetrated through the rotation center of the rotary damper 13 so as to be integrally rotatable, and a rotation link 14 for applying a torsion load to the torsion end portion 16 is provided. The damper unit 20 is fixed to the inner wall surface 54 by the mounting piece 68, and supports the reaction force of the torsional load by the rotating link 14 on the inner wall surface 54 through the mounting piece 68.

  The free end of the rotary link 14 is pressed against the upper surface of the restricting convex portion 69 protruding from the side surface of the table 53. When the rotary link 14 is rotated in accordance with the upward movement of the table 53 in the Z direction, the damper action by the damper unit 20 is activated and vibration control in the Z direction is performed.

DESCRIPTION OF SYMBOLS 10 Torsion damper 10a Compound torsion damper 10b Torsion damper 11 Torsion bar spring 12 Spring holder 12a Head 13 Rotary damper 14 Rotation link 15 Reverse rotation link 16 Torsion end portion 16a Screw shaft 17 Fixed end portion 18 Flat surface 19 Round bar portion 20 Damper unit 21 Fixing hole 22 Connecting recess 23 Damper casing 24 Lid member 25 Chamber 26 Shaft 27 Disk 28 Viscous fluid 29 Connecting projection 30 Internal hole 31 Adjustment hole 32 Slide bearing 33 Link hole 34 Washer 35 Nut 36 V-shaped link
37 Connecting hole 38 Rolling bearing 39 Connecting pin 40 Foundation 41 Pillar 42 Beam 43 Ramen structure 44, 45 Bearing plate 46 Diamond link 47 Rotating sub link 48 Reverse rotating sub link 49, 50 Intermediate connecting pin 52 Foundation 53 Table 54 Inner wall surface 55 Floor 56 Support leg 57 Sliding seats 58 and 59 Bearing plate 61 Recess 62 Block 63 Overhang 64 Guide rib 65 Restricting rib 66 Sliding seat 67 Cushion seat 68 Mounting piece 69 Restricting convex

Claims (13)

  A torsion bar spring having a torsion end at one end and a fixed end at the other end, a spring holder that houses the torsion bar spring and supports the fixed end in a relatively non-rotatable state, and the spring holder And a rotary damper coupled concentrically to each other to form a damper unit. A torsion end of a torsion bar spring is penetrated through the rotation center of the rotary damper so as to be integrally rotatable, and is twisted into the torsion end. In the torsion damper provided with a rotating means for applying a load and a fixing means for the spring holder, the rotating means is constituted by a rotating link attached to a torsion end of the torsion bar spring, and the fixing means is A reverse unit integrated with the damper unit and mounted coaxially with the rotary link It is constituted by a rolling links, torsion damper, characterized in that it has to apply a reverse torque from the outside to the rotary link and the reverse rotation link.   The means for applying the reverse torque from the outside to the rotating link and the reverse rotating link connects the sub links to the free ends of the rotating link and the reverse rotating link so as to be relatively rotatable, and the other ends of the both sub links. Are connected so as to be relatively rotatable to form a quadrilateral link as a whole, and the connecting end of the other end of each of the secondary links is connected to a fixed part such as a vibration control device so as to be relatively rotatable, The torsion damper according to claim 1, comprising one damper unit per quadrilateral link.   The means for applying the reverse torque from the outside to the rotating link and the reverse rotating link is constituted by another torsion damper having the same structure, and the damper unit of the other torsion damper is relative to a fixed part such as a vibration control device. Mounted in a freely rotatable manner, the free ends of both rotary links and the free ends of the counter-rotating links are connected to each other so that they can rotate relative to each other to form a quadrilateral link, and two damper units are combined per quadrilateral link. The torsion damper according to claim 1, further comprising:   The means for applying the reverse torque from the outside to the rotary link and the reverse rotation link is configured to press each free end of the rotary link and the reverse rotation link against a fixed part such as a vibration control device. The torsion damper according to claim 1.   The rotary damper has a casing whose one end in the axial direction is open, a lid member fixed to the open end, a chamber closed by the lid member, and the closed end of the casing and the lid member are kept liquid-tight. 5. The shaft according to claim 1, comprising: a shaft that passes through the shaft in a freely rotatable manner; a disk that is integrated with the shaft and that is rotatably held in the chamber; and a viscous fluid that is sealed in the chamber. Torsion damper described in 1.   6. The vibration control device using the torsion damper according to claim 2, 3 or 5, wherein the upper or lower support plate is located at a diagonal position of a rigid frame structure composed of columns and beams constructed on a foundation. 6. The vibration control system according to claim 5, wherein a link shaft for supporting a rotation link of the torsion damper is rotatably mounted, and the rotation support link and the reverse rotation rotation link are connected to the other support plate in a relatively rotatable manner. apparatus.   6. The torsion damper according to claim 2 or 5 is used, and a link shaft that supports a rotation link of the torsion damper is rotatably attached to either the upper or lower support plate, and the other support plate rotates. The vibration control device according to claim 6, wherein the sub link and the reverse rotation sub link are connected so as to be relatively rotatable.   6. The vibration control device using the torsion damper according to claim 3 or 5 as the torsion damper, wherein a link shaft for supporting each rotation link of the torsion damper is rotatably attached to the upper and lower support plates, respectively. The seismic control device according to claim 6.   In the vibration control device using the torsion damper according to claim 3 or 5, a rectangular table to be controlled is supported so as to be slidable in an arbitrary direction on a plane defined by XY coordinates on the floor surface of the foundation, Four side surfaces of the table are provided along the X-axis direction and the Y-axis direction, respectively, and support plates are respectively attached to the base side and the table side corresponding to each side surface of the table, and the torsion damper is attached to both support plates. The damper unit is mounted so as to be rotatable with the center of rotation in the Z-axis direction, and the free ends of the rotary links of both torsion dampers and the free ends of the counter-rotating links are connected to each other so that they can rotate relative to each other. A torsion damper composed of   6. A vibration control device using the torsion damper according to claim 2, wherein a quadrangular table to be controlled is slidably supported in an arbitrary direction on a plane defined by XY coordinates on a floor surface of the foundation. The four side surfaces of the table are provided along the X-axis direction and the Y-axis direction, the inner wall surface is provided on the foundation corresponding to each side surface, and the inner wall surface of the foundation is opened to the table side. A recess is provided, a block that is movable only in the Z direction is provided in the recess, and a support plate is attached to each of the block side and the table side, and the torsion damper is attached to either the block side or the table side support plate. A damper unit is rotatably mounted with a center of rotation in the Z-axis direction, and the end portions of both sub links are relative to the other support plate. Rolling freely linked, seismic damping device the free end of the V-shaped link of the torsion damper, which is fixed to the upper surface of the block is characterized by being pressed against the underside of the overhang portion of the recess.   6. A vibration control device using the torsion damper according to claim 3, wherein a quadrangular table to be controlled is slidably supported in an arbitrary direction of a plane defined by XY coordinates on the floor surface of the foundation. The four side surfaces of the table are provided along the X-axis direction and the Y-axis direction, the inner wall surface is provided on the foundation corresponding to each side surface, and the inner wall surface of the foundation is opened to the table side. A recess is provided, a block that is movable only in the Z direction is provided in the recess, and a support plate is attached to each of the block side and the table side, and a damper unit of the torsion damper is attached to each support plate in the Z-axis direction. Mounted rotatably around the center of rotation, the free ends of the rotating links of both torsion dampers and the free ends of the counter rotating links Each seismic damping device, characterized in that to constitute a quadrilateral link relative rotatably connected.   5. A vibration control device using the torsion damper according to claim 4, wherein a rectangular table to be controlled is supported on a foundation floor so as to be slidable in an arbitrary direction of a plane defined by XY coordinates. Four side surfaces are provided along the X-axis direction and the Y-axis direction, the inner wall surface is provided on the foundation corresponding to each side surface, and the torsion damper is attached to a support plate provided at a corner portion of the inner wall surface. And a free end portion of the rotating link and the reverse rotating link is pressed against two side surfaces sandwiching the corner portion of the opposing table.   The table is provided with a torsion damper against vibration in the Z direction, and the torsion damper accommodates the torsion bar spring having a torsion end at one end and a fixed end at the other end, and holds the torsion bar spring. A damper unit is configured by a spring holder that supports the end portion in a relatively non-rotatable state and a rotary damper that is concentrically coupled to the spring holder, and a torsion bar spring is twisted at the rotation center of the rotary damper. An end portion is penetrated so as to be integrally rotatable, a rotation link for applying a torsional load is provided at the torsion end portion, the damper unit is fixed to the inner wall surface, and a regulation protrusion protruding the rotation link to the side of the table Damping device characterized by being configured to be pressed against the upper surface of the part.

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