JP2008138826A - Damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save driving energy by suppressing heating by vibrational energy in a damper. <P>SOLUTION: This damper 1 comprises a screw damping part 4 converting an interlayer displacement produced in a structure by a vibrational energy into a rotary motion by a screw mechanism part and generating a frictional damping; and a viscous damping part 8 damping energy by the resistance of a viscous body placed between an inner tube rotated by the rotary motion and an outer tube surrounding the outer side of the inner tube and rotatably supporting the inner tube. A part of the flow passage of a cooling device 9 is formed near the heating part of the screw mechanism part. A refrigerant liquid 9b in the cooling device flows out in one direction and is circulated by using the reciprocating motion of a reciprocating motion part as a drive source for a pump for refrigerant liquid. A tank storing the refrigerant liquid and having a pressure valve for releasing the variation of flow and the internal pressure in the pump is installed between the flow passage of the screw mechanism part and the flow passage of the pump for refrigerant liquid in the flow passage of the cooling device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, for example, the inertial energy of a structure generated by vibrational energy such as an earthquake differs between the upper and lower layers of the structure and appears as interlayer displacement. The relative reciprocating motion is converted to the rotational motion by the screw mechanism through the mounting member provided in the structure using the interlayer displacement in the upper and lower layers of the structure, and the screw is attenuated by screw friction. The present invention relates to an attenuation device that is absorbed and attenuated by a part and a viscous attenuation part, and that suppresses heat generation of the screw mechanism part.

  Conventionally, as a damping device for attenuating vibration energy in an earthquake or the like, Conventional Example 1 and Conventional Example 2 having a kinetic energy conversion unit that converts a reciprocating linear motion into a rotational motion as described above are known (Patent Document 1). 2).

In the damping device of Conventional Example 1, a part of the damping amount is borne by the rotational motion converting means so that the damping capacity of the viscous damping means does not decrease. The conventional example 2 is provided with a cooling means for radiating heat energy generated by attenuation.
JP 2004-84845 A JP 2006-17251 A

  However, in the damping device of Conventional Example 1, seizure becomes a problem due to the expansion of the screw portion or the like due to the generation of frictional heat in the screw portion in the rotational motion conversion portion. Moreover, in the prior art 2, in order for the cooling means to function, external energy is required for the drive unit and the control unit, the place where the cooling device is installed, and the maintenance and management of the cooling means require a large amount of cost. There is. The attenuation device according to the present invention has been proposed in order to solve such a problem.

  The gist for solving the above-described problems of the damping device according to the present invention is to achieve interlayer displacement caused in the structure by vibration energy relative to the reciprocating motion part via the mounting member provided in the structure. A reciprocating motion, converting the relative reciprocating motion into a rotational motion by a screw mechanism, and generating a frictional damping; an inner tube rotated by the rotational motion; In a damping device comprising a viscous damping part that attenuates energy by the resistance of a viscous body filled between an outer cylinder that rotatably supports a part of the cooling device in the vicinity of the heat generating part in the screw mechanism part. In addition, a part of the cooling device is provided in the reciprocating portion, and the reciprocating motion of the reciprocating portion is used as a drive source for the refrigerant liquid pump so that the refrigerant liquid in the cooling device flows out in one direction and is connected to the piping. A tank having a pressure valve that circulates and stores the refrigerant liquid and releases the flow rate fluctuation of the pump and the internal pressure is provided between the screw mechanism portion in the cooling device and the pipe of the refrigerant liquid pump. It is.

A pipe extending from the screw mechanism to the tank is exposed to the outside, and a plurality of heat radiating plates are fixed or detachably provided on the pipe of the externally exposed portion;
The housing of the screw attenuating portion and the housing of the viscous attenuating portion are separated with a gap, and the screw shaft of the screw mechanism portion rotating in the screw attenuating portion is connected to the inner cylinder of the viscous attenuating portion. thing,;
A piston part is formed in a rod-like reciprocating body that reciprocates linearly in the reciprocating part, and a flow path for refrigerant liquid is disposed on both sides in the front-rear direction of the piston part. The refrigerant liquid flows in one direction and circulates by a check valve provided in
Is included.

  Further, the gist of the damping device is to convert the inter-layer displacement generated in the structure by the vibration energy as a relative reciprocating motion of the reciprocating motion portion via the mounting member, and to convert the relative reciprocating motion into a rotational motion by the screw mechanism portion, and Energy is generated by the resistance of a viscous body filled between a screw damping portion that generates frictional damping, and an inner cylinder that is rotated by the rotational motion and an outer cylinder that surrounds the outer cylinder and rotatably supports the inner cylinder. In the damping device comprising the viscous damping part for damping the screw mechanism part, a part of the flow path of the cooling device is provided in the vicinity of the heat generating part in the screw mechanism part, a tank for storing the refrigerant liquid is provided in the screw damping part, and the screw The flow path disposed in the vicinity of the mechanism portion and the tank are connected to each other at least at two positions in the upper and lower positions by connection flow paths or connection pipes. It is to circulate.

According to the damping device of the present invention, in the cooling device, the reciprocating motion of the reciprocating motion unit is used as the drive source of the refrigerant liquid pump, and the refrigerant liquid flows out in one direction and is circulated through the pipe. It is possible to use energy such as earthquakes without the need for a driving source.
Further, since the refrigerant liquid in the cooling device automatically circulates due to vibration or the like, there is no need for an activation device that detects an earthquake and activates the circulation of the refrigerant liquid. Therefore, the whole cooling device becomes a simple and compact device.

  In addition, by providing the tank, it is possible to reliably secure the refrigerant liquid necessary for circulation through the entire cooling device, and to easily adjust the necessary amount. The tank is provided with a small space and filled with the refrigerant liquid, so that the flow rate difference of the refrigerant liquid during the reciprocation in the relative reciprocating motion part can be absorbed. Further, the provision of the tank makes it possible to temporarily store the absorbed heat, and the effect of heat dissipation can be expected.

The heat radiation amount is increased by the plurality of heat radiation plates provided in the pipe, and the cooling capacity of the refrigerant device is improved.
Since the housing of the screw damping section and the casing of the viscous damping section are separated with a gap, heat of the screw mechanism section is not transmitted through the casing and supports the inner cylinder of the viscous damping section. The bearing load is reduced and the product life is improved.
A piston part is formed on a rod-like reciprocating body that reciprocates linearly in the reciprocating part, and pipes for refrigerant liquid are provided on both sides of the piston part in the front-rear direction, and are provided on the inflow side and the outflow side of this pipe. Since the refrigerant liquid flows in one direction and circulates by the check valve, the refrigerant liquid flows out continuously without being intermittent. Therefore, the cooling capacity of the heat generating part is improved.

  Further, a part of the cooling device is provided in the vicinity of the heat generating part in the screw mechanism part, a tank is provided in the screw attenuation part, a flow path disposed in the vicinity of the screw mechanism part in the screw attenuation part, the tank, Are directly connected by a connecting flow path or a connecting pipe, and the refrigerant liquid naturally circulates in these due to the temperature difference, thereby eliminating the need for a special driving source for circulating the refrigerant liquid, The structure is simple and easy to handle, and it is compact, lightweight, and reduced in manufacturing cost.

  As shown in FIG. 1, the first embodiment of the damping device according to the present invention has a relative structure of the reciprocating body 2 in the reciprocating motion part of the damping device in accordance with the interlayer displacement of the structure due to vibration energy such as an earthquake. A screw attenuating portion 4 that converts a reciprocating linear motion into a rotational motion via a screw mechanism portion 3, an inner cylinder 5 that is rotated by the rotational motion, and an outer side that surrounds the outer cylinder 5 and rotatably supports the inner cylinder 5. In the damping device 1 including the viscous damping portion 8 for damping energy by the resistance of the viscous body 7 filled between the cylinder 6, a part of the cooling device 9 is provided in the vicinity of the heat generating portion in the screw mechanism portion 3. At the same time, a part of the cooling device 9 is provided in the reciprocating portion, and the reciprocating motion of the reciprocating portion 2 is used as a driving source of the refrigerant liquid pump 9a, so that the refrigerant liquid 9b of the cooling device 9 flows out in one direction. Reduced by pipe 10 It is a device 1.

  The heat generating part in the screw mechanism part 3 includes a male screw groove carved on a part of the outer peripheral surface of the reciprocating body 2 as the reciprocating motion part, and an inner peripheral wall surface of the nut 11 so as to be screwed into the male screw groove. It is a sliding contact part with the internal thread groove carved in the. As shown in FIG. 2, a piston rod 12 is provided on the right side of the reciprocating body 2 so as not to play in the axial direction or freely connected in the rotational direction. A disc-shaped flange portion 2 a connected at 13 is formed.

  The nut 11 is fixed and supported by the cylindrical body 4a of the screw attenuating portion 4, and a cylindrical tank 4b having a pressure valve 4e for storing the refrigerant liquid 9b of the cooling device 9 is formed. Further, the nut 11 is provided with flow paths 11a, 11b,... Of the cooling device 9 in the vicinity of the screw mechanism portion 3, and the flow paths 4c, 4d,. To communicate with. The flow paths 11a, 11b,... Are arranged in parallel along the axis of the reciprocating body 2, and a plurality of the flow paths 11a, 11b,.

  In FIG. 2, the piston drive part 14 is formed in the right side of the said cylinder 4a. The piston drive part 14 is provided with a packing-attached lid (head) 15b so that the tip of the piston rod 12 is inserted into a linder 15a of the drive cylinder 15 and there is no liquid leakage. Has been. The packing-attached lid (head) 15 b is provided with a refrigerant flow path communicating with the cylinder 15 a and the pipe 10.

  The cylinder 15a of the drive cylinder 15 is filled with, for example, a refrigerant liquid 9b such as an aqueous solution or flame retardant oil, and the right pipes 10a and 10b and the left pipe 10c of the refrigerant liquid pump 9a. , 10d.

  The configuration of the cooling device 9 will be described by explaining the route of arrangement of the pipe 10. A pipe 10 a communicating with the cylinder 15 a of the drive cylinder 15 is connected to a three-way joint 17 with a check valve 16. The pipe 10a serves as a flow path through which the refrigerant liquid 9b flows exclusively from the outside to the cylinder 15a. Similarly, the pipe 10b serves as a flow path for flowing the refrigerant liquid 9b from the cylinder 15a to the outside.

  Pipes 10c and 10d are disposed on the opposite side of the piston portion with respect to the pipes 10a and 10b. One end of the three-way joint 17 is connected to the pipe 10c, and the other end communicates with the cylinder 15a via a lid (head) 15b with packing. One end of the pipe 10d communicates with the cylinder 15a through a packing lid (head) 15b, and the other end is connected to a three-way joint 18 with a check valve 16.

  Thus, the piston part is formed on the piston rod 12 that reciprocates linearly in the reciprocating part, and the refrigerant liquid pipes 10a, 10b, 10c, 10d are arranged on both sides of the piston part in the front-rear direction. The refrigerant liquid 9b flows in one direction and circulates by check valves 16 provided on the side and the outflow side.

  The other end of the external pipe 10 connected to the three-way joint 18 is connected to the nut 11 of the screw attenuation portion 4. In this nut 11, the refrigerant liquid 9 b flows through the flow path reaching the screw mechanism section 3, turns around the outer peripheral surface, passes through the flow path 4 c at the upper part of the cylindrical body 4 a, and communicates with one end of the pipe 10 e. And flows in.

  The other end of the pipe 10e is connected to a flow path communicating with the inside of the tank 4b at the right end of the cylindrical body 4a. And this tank 4b is provided with the flow path for discharge | emission in the lower part of the right side edge part, and the one end part of the piping 10f is connected there. The other end of the pipe 10f is connected to the three-way joint 17, so that the refrigerant liquid 9b circulates as a whole. This is the configuration of the piping and flow paths of the cooling device 9.

  When an earthquake or the like is generated by the damping device 1 having such a cooling device 9, the reciprocating body 2 in the reciprocating motion part reciprocates linearly to the left and right. In the refrigerant liquid pump 9a, the piston rod 12 reciprocates linearly left and right. First, when the piston moves to the right, the refrigerant liquid 9b on the right side in the cylinder 15a is pushed out to the right side and flows from the pipe 10b through the check valve 16 to the pipe 10. On the other hand, in the pipe 10a, the check valve 16 works to prevent the refrigerant liquid 9b from flowing.

  At the same time as the piston of the refrigerant liquid pump 9a moves to the right, the refrigerant liquid 9b on the left side in the cylinder 15a is sucked in, and the piping 10c and the lid with packing are connected via the check valve 16 of the three-way joint 17. Refrigerant liquid 9b is supplied from (head) 15b and filled. Further, the refrigerant liquid 9b in the pipe 10d does not flow because the flow path is closed by the check valve 16.

  When the piston of the refrigerant liquid pump 9a moves to the left side, the refrigerant liquid 9b on the left side of the cylinder 15a is pushed out, and the refrigerant liquid 9b flows into the pipe 10d and flows out into the pipe 10, and the pipe 10c The refrigerant liquid 9b does not flow. The refrigerant liquid 9b does not flow in the pipe 10b on the opposite side, and the refrigerant liquid 9b flows into the pipe 10a from the three-way joint 17 and is supplied and filled on the right side of the cylinder 15a. Thus, in the piston drive unit 14, whenever the piston rod 12 reciprocates linearly, the refrigerant liquid 9b is always supplied from the pipe 10f to the pipe 10a or the pipe 10c, and from the pipe 10b or the pipe 10d via the three-way joint 18. To the piping 10.

  The refrigerant liquid 9b flows from the pipe 10 into the flow paths 11a, 11b,... Of the net 11 and absorbs the heat of the screw mechanism section 3. Thereby, the screw mechanism part 3 is cooled. Thereafter, the refrigerant liquid 9b flows to the outer peripheral portion of the nut 11 and from there to the flow path 4c of the cylindrical body 4a and further to the pipe 10e. Note that the opening of the channel 4d is closed by the lid 20, and is used when the refrigerant liquid 9b is discharged.

  Since the pipe 10e is led out of the cylinder 4a, the refrigerant liquid 9b dissipates heat and is cooled in this portion. Thereafter, the refrigerant liquid 9b reaches the tank 4b. In the tank 4b, the refrigerant liquid 9b is stored, and an amount necessary for the refrigerant liquid 9b to circulate throughout the cooling device 9 is secured.

  There is a flow path that flows downward in the lower part of the tank 4b, and the end of the pipe 10f is connected thereto, so that the refrigerant liquid 9b is supplied to the three-way joint 17 every time the piston rod 12 reciprocates linearly. Then, the gas flows alternately to the pipes 10a and 10c.

  In this manner, the cooling pump 9a is driven naturally without the need for a separate drive source due to vibration such as an earthquake, and the refrigerant liquid 9b cools it through the screw mechanism portion 3, and further, the tank In 4b, the temperature of the refrigerant liquid 9b is cooled, and the refrigerant liquid 9b is circulated from there.

  In the damping device according to the second embodiment, the flow paths 11a, 11b,... In the screw mechanism 3 are not made parallel to the axial direction of the reciprocating body 2, but spirally around the axial center. This is an example (not shown) that is disposed in the screw mechanism section 3 that is a heat generating section. In this case, the spiral flow paths 11 a and 11 b are configured by piping, or are configured by a thread gap in a spiral screw engraved on the inner peripheral wall surface of the nut 11. In this way, the heat generated by friction is not dissipated intermittently in the circumferential direction of the screw mechanism portion 3, but is continuously dissipated in the circumferential direction to uniformly dissipate the entire screw mechanism portion 3. be able to. Therefore, heat dissipation is performed efficiently and the performance of the cooling device is improved.

  Further, as shown in FIG. 3, in the cooling device according to the third embodiment, a pipe 10e from the screw mechanism 3 to the tank 4b is exposed to the outside, and a plurality of pipes 10e in the externally exposed portion are provided. The heat radiating plate 19 is fixed or detachably provided. Thereby, the temperature adjustment of the refrigerant liquid 9b is facilitated.

  In the cooling device according to the fourth embodiment, as shown in FIG. 4, the circulation driving means for circulating the refrigerant liquid 9b of the cooling device 9 is a natural circulation due to the temperature difference of the refrigerant liquid 9b itself. That is, the refrigerant liquid 9b heated by the screw mechanism portion 3 and moved up in the temperature is moved upward in the connection channel or the connection pipe, and the refrigerant liquid 9b having a lower temperature passes through the connection pipe 10f by that amount. Through the bottom of the tank 4b. The rising refrigerant liquid 9b flows out to the upper part of the tank 4b through the connecting pipe 10e. Thus, the refrigerant liquid 9b having a temperature lower than that of the upper refrigerant liquid 9b in the tank 4b accumulates at the bottom of the tank 4b and circulates naturally.

1 is a longitudinal sectional view of an attenuation device 1 according to the present invention. It is a partially expanded longitudinal cross-sectional view of the damping device 1 of the same invention. It is a longitudinal cross-sectional view of the screw attenuation | damping part 4 and piston drive part 14 which concern on 3rd Example. It is a longitudinal cross-sectional view of the screw attenuation | damping part 4 which concerns on 4th Example.

Explanation of symbols

1 Attenuator,
2 reciprocating body, 2a buttocks,
3 Screw mechanism,
4 Screw attenuation part, 4a cylinder,
4b tank, 4c, 4d flow path,
4e pressure valve,
5 inner cylinder,
6 outer cylinder,
7 viscous body,
8 Viscous damping part,
9 Cooling device, 9a Refrigerant liquid pump,
9b refrigerant liquid,
10 piping, 10a-10f piping,
11 nut, 11a, 11b flow path,
12 piston rod,
13 volts,
14 piston drive,
15 drive cylinder, 15a cylinder,
15b Lid with packing (head),
16 Check valve,
17, 18 Three-way joint,
19 Heat sink,
20 lid.

Claims (5)

Interlayer displacement generated in the structure by the vibration energy is converted into a reciprocating motion of the reciprocating motion part via the mounting member provided in the structure, and the relative reciprocating motion is converted into a rotational motion by the screw mechanism and friction. Energy is generated by the resistance of the viscous body filled between the screw attenuating portion that generates the damping and the outer cylinder that surrounds the outer cylinder that is rotated by the rotational motion and that rotatably supports the inner cylinder. In the damping device consisting of the viscous damping part to be attenuated,
While providing a part of the flow path of the cooling device in the vicinity of the heat generating part in the screw mechanism part,
With the reciprocating motion of the reciprocating motion part as the driving source of the coolant liquid pump, the coolant liquid of the cooling device is circulated in one direction,
In the flow path of the cooling device, a tank having a pressure valve for storing the refrigerant liquid and releasing the flow rate variation of the pump and the internal pressure is provided between the screw mechanism section and the flow path of the refrigerant liquid pump. Being
Attenuator characterized by. Piping from the screw mechanism to the tank is exposed to the outside, and a plurality of heat radiating plates are fixed or detachably provided on the piping of the externally exposed portion,
The attenuation device according to claim 1. The housing of the screw attenuating portion and the housing of the viscous attenuating portion are separated with a gap, and the rotating screw shaft of the screw mechanism portion in the screw attenuating portion is connected to the inner cylinder of the viscous attenuating portion. ,
The attenuation device according to any one of claims 1 to 2. A piston portion is formed on a rod-like reciprocating body that reciprocates linearly in the reciprocating motion portion, and a flow path for refrigerant liquid is provided on both sides of the piston portion in the front-rear direction. With the check valve provided, the refrigerant liquid flows in one direction and circulates.
The attenuation device according to any one of claims 1 to 3. The inter-layer displacement generated in the structure by the vibration energy is converted into a relative reciprocating motion of the reciprocating motion portion via the mounting member, and the relative reciprocating motion is converted into a rotational motion by the screw mechanism portion, and a friction damping is generated. And a viscous damping section that attenuates energy by the resistance of a viscous body that is filled between the inner cylinder rotated by the rotational motion and the outer cylinder that surrounds the outer cylinder and rotatably supports the inner cylinder. In the damping device
A part of the flow path of the cooling device is provided in the vicinity of the heat generating part in the screw mechanism part, and a tank for storing the refrigerant liquid is provided in the screw attenuation part,
The flow path disposed in the vicinity of the screw mechanism part and the tank are connected to each other at least at two positions in the vertical position by a connection flow path or a connection pipe. Circulating,
Attenuator characterized by.

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