JPH0575642U - Double solenoid type shaker - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a double solenoid type exciter that has a large operating force, good space efficiency, is inexpensive, and has excellent frequency characteristics, and is therefore economical and vibrating. [Structure] An upper casing 1 and a lower casing 2 which cooperate with each other to form a box shape and an H-shaped longitudinal section, and both casings 1,
A movable magnetic mass body 2 housed in the housing 2, a plurality of support springs 5 interposed between the casings 1 and 2 and the movable magnetic mass body 4, and a movable magnetic mass body 4 arranged at the center. The end surface and the lower end surface are respectively attached to the upper casing 1 and the lower casing 2, and the longitudinal cross-sections are downward E-shaped upper laminated core 7, upward E-shaped lower laminated core 8 and arranged in the recesses of the laminated cores 7 and 8, respectively. And an electromagnet coil 9 that is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a double solenoid type vibrator.

[0002]

[Prior Art]

 For example, as a vibration exciter used for active vibration isolation or vibration test of a machine, conventionally, as shown in the longitudinal sectional view of FIG. There is known an electrokinetic type in which a movable piston 04, around which a drive coil 03 is wound, is incorporated, and an alternating current is supplied to obtain an operating force by an electromagnetic force. Here, 05 is a support spring. In addition, a hydraulic actuator type is also known for large operating force.

However, these structures have the following drawbacks. (1) The electrokinetic type has a small operating force and is bulky, and the external shape is cylindrical, so the space efficiency is low. (2) The hydraulic actuator type is expensive because of the large number of parts and has poor frequency characteristics.

[0004]

[Problems to be solved by the device]

 The present invention has been proposed in view of such circumstances, and has a large operating force, a good space efficiency, a low cost, and a good frequency characteristic, and thus is excellent in economic efficiency and vibration. It is an object of the present invention to provide a double solenoid type vibrator.

[0005]

[Means for Solving the Problems]

 To this end, the present invention cooperates with each other to form a box-shaped upper casing and lower casing, an H-shaped longitudinal section of a movable magnetic mass housed in both casings, and both casings and the movable casing. A plurality of support springs interposed between the magnetic mass body and the vertical cross section attached to the upper casing and the lower casing, with the upper end surface and the lower end surface centered on the movable magnetic mass body, respectively, are provided. It is characterized by comprising a downward E-shaped upper laminated core, an upward E-shaped lower laminated core, and electromagnet coils respectively arranged in the recesses of the laminated cores.

[0006]

[Action]

 Since the outer shape is box-shaped, it is easy to arrange the vibrator. Further, since the upper and lower laminated cores, which can serve as electromagnets, are arranged above and below the H-shaped magnetic mass body, respectively, the electromagnetic force becomes strong. Furthermore, since it is a solenoid type, the structure of the vibration exciter is simple and the frequency characteristics are good.

[0007]

【Example】

 An embodiment in which the present invention is applied to a device for active vibration isolation of a structure will be described with reference to the drawings. First, in the longitudinal sectional views of FIGS. The upper casing, the lower casing 4 and the lower casing 4 which form the box-shaped outer casing of the shaker (hereinafter referred to as the shaker) 3 have an H-shaped longitudinal section, and a slight gap is provided between the upper casing 1 and the lower casing 2. The movable magnetic masses 5 accommodated therein are a plurality of support springs interposed between the lower end of the magnetic mass 4 and the lower casing 2. Reference numeral 6 is a plurality of support position adjusting screws interposed between the upper end of the magnetic mass body 4 and the upper casing 1, and 7 and 8 are concave portions between the upper casing 1, the lower casing 2 and the magnetic mass body 4, respectively. The upper and lower E-shaped upper laminated cores and the upper E-shaped lower laminated cores are vertically arranged in a vertical cross-section with the upper casing 1 and the lower casing 2 having upper and lower surfaces, respectively. It is fixed. Reference numeral 9 denotes a plurality of electromagnet coils arranged in the recesses of the upper laminate core 7 and the lower laminate core 8, respectively. Next, in the system diagram of FIG. 3, 10 is supported on the vibration reduction structure 11 via the first vibration isolator 12, the vibration isolator mount 13, and the second vibration isolator 14. A vibration source, 15 is a sensor cable for connecting the sensor 16 attached to the vibration reduction structure 11 and the target control signal controller 17, and 18 is between the vibration reduction structure 11 and the first vibration isolation element 12. It is a sensor cable that connects the sensor 19 attached to the target control signal controller 17. Reference numeral 20 is a control signal cable connecting the target control signal controller 17 and the shaker control driver 21, and 22 and 23 are the shaker control driver 21 and the shaker 3 mounted on the shaker mount 13, respectively. Is an electromagnet output power cable for connecting to the power source, and 24 is a power source cable for connecting the vibrator 3 and the power source.

In such a device, in the vibrator 3 shown in FIG. 1, when electric current is supplied to the electromagnet coil 9, the upper laminate core 7 and the lower laminate core 8 respectively become electromagnets, and the magnetic force thereof causes magnetic force. The mass body 4 is moved up and down, collides with the upper casing 1 and the lower casing 2, and the vibrations generated there can be taken out from the mounting portion of the lower casing 2 as damping force. As shown in Fig. 3, when using the shaker 3 mounted on the vibration proof shaker mount 13, use the sensors 16, 19, the target control signal controller 17, the control signal cable 20, etc. Then, a feedback operation is performed to adjust the current to the electromagnet coil 9 of the vibrator 3 to control the vibration force and frequency.

According to the apparatus of this embodiment, the following effects can be obtained. (1) Since the outer shape is box-shaped, it is easy to arrange the vibrator, and therefore the space is small and the economy is improved. (2) Since the upper laminate core and the lower laminate core, which can be used as electromagnets, are arranged above and below the H-shaped magnetic mass body, the electromagnetic force is strong and the vibration exciter is small and lightweight. Is possible. (3) Since it is a solenoid type, the structure of the vibration exciter is simple and the frequency characteristics are good, thus improving the economy and performance.

[0010]

In summary, according to the present invention, an upper casing and a lower casing that cooperate to form a box shape, a movable magnetic mass body having an H-shaped longitudinal section and housed in both casings, A plurality of support springs interposed between both casings and the movable magnetic mass body, and centered on the movable magnetic mass body, the upper end surface and the lower end surface are attached to the upper casing and the lower casing, respectively. With an upper laminate core having a downward E-shaped vertical cross section, a lower laminate core having an upward E-shaped cross section, and an electromagnet coil arranged in each recess of each of the above-mentioned laminate cores, a large operating force and space efficiency are achieved. The present invention is very useful in industry because it provides a double solenoid type vibrator with good performance, low cost, good frequency characteristics, and excellent economical efficiency and vibration excitability. Of.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is a system diagram showing an embodiment in which the present invention is applied to an active vibration isolation device.

FIG. 4 is a vertical cross-sectional view showing a known electrodynamic exciter.

[Explanation of symbols]

 1 Upper Casing 2 Lower Casing 3 Vibrator 4 Magnetic Mass 5 Support Spring 6 Adjusting Screw 7 Upper Laminate Core 8 Lower Laminate Core 9 Electromagnetic Coil 10 Vibration Source 11 Vibration Reduction Structure 12 First Vibration Isolator 13 Excitation Vessel mount 14 Second anti-vibration element 15 Sensor cable 16 Sensor 17 Control signal controller 18 Sensor cable 19 Sensor 20 Control signal cable 21 Vibrator control driver 22 Electromagnet output power cable 23 Electromagnet output power cable 24 Power cable

Claims (1)

[Scope of utility model registration request] 1. An upper casing and a lower casing which cooperate with each other to form a box shape, a movable magnetic mass body having an H-shaped longitudinal section and housed in both casings, the both casings and the movable magnetic mass body. And a plurality of support springs interposed between the upper and lower end surfaces of the movable magnetic mass body centering on the movable magnetic mass body, and the upper and lower end surfaces thereof are attached to the upper casing and the lower casing, respectively. A double solenoid type exciter comprising a laminate core, an upward E-shaped lower laminate core, and electromagnet coils arranged in the recesses of the laminate cores.