JPH04125360U - Drive device in vibration damping equipment for structures - Google Patents

Abstract

(57) [Summary] [Purpose] Control force can be effectively transmitted to the weight,
A drive device for an active vibration damping device with high structural reliability is provided. [Structure] Slide members 2 on which the weight 1 slides are attached to the weight 1 so as to be perpendicular to each other with a step difference in the upper and lower sides, and reaction walls 4 surrounding the weight 1 are attached to both ends of each slide member 2. A roller 3 that slides along the slide member 2 is mounted on the rack 6 provided in the longitudinal direction of the slide member 2, and the weight 1 is mounted on the weight 1 configured to be activated in response to a vibration detection signal of the structure from a control device. The pinion 11 of the drive shaft 10 of the servo motor 9
were engaged.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an actuator for hybrid mass dampers, which is one of the vibration damping devices for structures. In brake damping, this relates to a drive device that applies a control force.

0002

[Conventional technology]

In active vibration damping devices for structures, a control force is applied to a weight by a drive device. It is necessary to do so. Conventionally, vibrations caused by earthquakes and wind in structures were detected by control equipment, and the detection signals were sent to The rotational force of the servo motor is sent to the servo motor in the vibration damping device, and the rotational force of the servo motor is converted into the linear force of the weight. A ball screw is used to convert the ball into A method was adopted in which a weight screwed into a screw was made to move straight. First of all, the inventor etc. The vibration damping device for structures proposed in Japanese Patent Application No. 3-16332 also belongs to this category. It is something that

0003

[Problem that the idea aims to solve]

In this type of vibration damping device, the ball screw itself has its own frictional resistance, and the ball There was a problem in that the rigidity and strength of the screw in the axial direction were weak. The present invention was proposed in view of the problems of the above-mentioned prior art, and its purpose is The control force can be effectively transmitted to the weight, and there are no problems with structural strength. The object of the present invention is to provide a driving device in a vibration damping device for a structure.

0004

[Means to solve the problem]

In order to achieve the above object, the vibration damping device for a structure according to the present invention has a weight that is connected to each other. A slide member on which the weight slides is attached to the slide member, which is perpendicular to the top and bottom with a step. A roller that slides along a reaction wall surrounding the weight is installed at both ends of the ride member. A rack is placed along the length of the structure, and the weight is attached to the structure. The service is equipped with a servo motor that operates in response to detection signals of vibrations caused by earthquakes and wind. A pinion mounted on the drive shaft of the motor is engaged with the slide member. It is configured.

[0005]

[Effect]

Since the present invention is constructed as described above, it is possible to prevent vibrations of structures caused by earthquakes, wind, etc. is detected by the control device, and this detection signal causes the servo motor to rotate under control. , a pinion mounted on the drive shaft of the servo motor, and a pinion with its length attached to the slide member. By engaging with the rack provided in the hand direction, the rotational force of the servo motor becomes the linear force of the weight. The movement of the weight is controlled.

[0006]

【Example】

The present invention will be described below with reference to the illustrated embodiments. 1 is a weight, and a pair of slide members 2, 2 are perpendicular to each other with a step above and below. rollers 3 are mounted on both ends of each slide member 2, and a weight slides along a reaction wall 4 erected on the horizontal base a of the structure so as to surround 1 It is configured as follows. The weight 1 is also moved along the slide member 2 by the roller 3'. The weight 1 can be moved in 360° directions. 5 in the diagram supports the weight It is a low friction material.

[0007] Therefore, the slide member 2 is slid by the roller 3 along the reaction wall 4, and also by the weight 1 also slides along the slide member 2 by the roller 3, so the weight 1 rotates 360°. can move in the direction of Each slide member 2 is provided with a rack 6 in the longitudinal direction, and a rack 6 is provided at the end of the member 2. A bullet 8 is interposed between the roller support member 7 and the weight 1.

[0008] A servo motor 9 is mounted on the weight 1, and a drive shaft 10 of the servo motor 9 A pinion 11 that meshes with the rack 6 is mounted thereon. 12 in the figure is a bearing. Ru. Since the illustrated embodiment is constructed as described above, the structure is protected against earthquakes and wind damage. The vibration is detected by a control device (not shown), and this detection signal is sent to the servo motor 9. The motor 9 is driven and rotated.

[0009] This rotational force meshes with the pinion 11 mounted on the drive shaft 10 of the servo motor 9. It is converted into a linear force by the rack 6 of the slide member 2, which controls the movement of the weight 1. . In addition, how to adjust the relationship between the speed of the weight 1 and the rotational speed and rotational force of the servo motor 9. Alternatively, a speed reduction device may be installed between the servo motor 9 and the pinion 11.

0010 If the servo motor 9 does not move due to a power outage, etc., the weight 1 and the ammunition 8 will Passive damping is now possible, and this passive damping device is fail-safe. There is.

[0011]

[Effect of the idea]

According to the present invention, as described above, a driving device for a weight in an active vibration damping device is mounted on the drive shaft of a servo motor that operates in response to structural vibrations caused by earthquakes, wind, etc. A suspended pinion and a weight are provided in the longitudinal direction of a sliding member on which the weight slides, and the above-mentioned Since it consists of a rack that meshes with the pinion, almost all of the rotational force of the servo motor is absorbed. It can be almost directly converted into linear force of the weight, and the control force is efficiently transmitted to the weight. Moreover, compared to conventional ball screws, the rack has greater axial strength and rigidity, and has a better structure. It has great structural reliability.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a drive device in a vibration damping device for a structure according to the present invention.

FIG. 2 is a view taken along arrow A-A in FIG. 1;

[Explanation of symbols]

1 Weight 2 Slide member 3 roller 3' roller 4 Reaction wall 6 easy 9 Servo motor 10 Drive shaft 11 pinion

Claims (1)

[Scope of utility model registration request] Claim 1: Slide members on which the weights slide are attached to the weights so as to be perpendicular to each other with steps above and below, and reaction walls surrounding the weights are attached to both ends of each slide member. A roller that slides along the structure is mounted, and a rack is arranged along the longitudinal direction, and a servo motor that is activated in response to a detection signal of earthquake or wind vibration in the structure is mounted on the weight. 1. A drive device for a vibration damping device for a structure, characterized in that a pinion mounted on a drive shaft of a servo motor is easily engaged with the slide member.