JPH0793171B2 - Multi-stage slip ring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supplies electric energy to a rotating test object having multiple rotating shafts or a single high-speed rotating shaft, or directly outputs various physical information from these rotating test objects to an electric signal. The present invention relates to a slip ring device as a connector for rotary connection, and further to a multi-stage slip ring device which can be applied as a device capable of performing a rotation test from an ultra-low speed to a high speed by mounting a rotating test object on an output shaft.

[0002]

2. Description of the Related Art Conventionally, a slip ring has been used for a rotary connection connector as a means for supplying electric power to a rotating body and a signal transmitting means, but there are various types thereof. With respect to the contacts and contact parts of the slip ring, various types such as a brush contact type, a mercury contact type, and an induction type are known. Also, regarding the shape of the contact rotating part,
A uniaxial slip ring using a disc type, a cylinder type, a disc sandwiched type or the like is known. These conventional ones are all uniaxial rotation type, and it is not possible to send electric energy onto a uniaxial rotating specimen or to extract various physical phenomena of the rotating specimen to the stationary machine side as electric signals. However, it cannot be applied to the rotating test object that has a multi-axis rotating shaft, and in the case of multi-axis, slip rings must be provided separately, wiring becomes complicated, and electric wires are entangled. There was an inconvenience.

On the other hand, the high-speed connection performance of these conventional slip rings is due to the performance of the contact points / contact parts such as brushes and the bearings.
The maximum was 15,000 rpm. Further, in the case of a slip ring used in a vacuum such as outer space, the performance of a bearing using a solid lubricant is limited, and the maximum limit is 300 to 400 rpm. Therefore, it has been difficult for the slip ring to accurately transmit electric energy and signals to the rotating specimen to be rotated at a higher rotation speed without malfunction. for that reason,
Conventionally, the radio wave method is mainly used as a method for collecting information from a high-speed rotating body, but in the case of the radio wave method, a high-speed rotating body needs to be equipped with a battery, a transmitter, and the like, which causes an imbalance in weight. However, there are problems such as the occurrence of electric energy and the limitation of electric energy supply capacity and multi-channel.

[0004]

As described above, since the conventional slip ring is of the uniaxial rotation type, when the specimen to be rotated has multiple rotation axes, electric power is applied to each of the multiple rotation axes. There is a problem that energy cannot be supplied or various signals cannot be taken out to the solid body side. The conventional slip ring has a maximum performance of 15,000.
The maximum speed is 300 to 400 rpm in the space, or in vacuum, and it is a source of erroneous information for a rotating sample to be rotated at a higher speed, and there is a problem that it cannot be applied.
The present invention was devised in order to solve the above problems of the conventional slip ring, and even if the rotating test object has multiple rotating shafts, it is a rotating test object that rotates at an extremely high speed. Even if there is, the purpose is to provide a multi-stage slip ring device that can reliably supply electric energy, extract and transmit electric signals, etc., and that can also be applied to a rotation test device by positively rotating the test specimen. And

[0005]

A multistage slip ring device of the present invention comprises a fixed base body, an inner rotary body and an outer rotary body each having a rotating test specimen mounting portion at an end thereof , and the fixed base body and the inner rotary body. One or more stages of outer rotors are concentrically and rotatably fitted to the rotors via bearings, respectively.
A multi-pole multi-contact rotary connection connector mechanism is provided on each of the opposing fitting wall surfaces between the fixed base body and the outer rotating body and between the outer rotating body and the inner rotating body, and at least the above.
The input-output terminals electrically connected to said multipolar multi-contact rotary connector mechanism and inner rotating body to the fixed body provided further before
Between the fixed base and the outer rotating body, the fixed base is a stator.
And the outer rotating body constitutes the rotor.
A dynamic motor is provided, and the outer rotating body is directly attached to the fixed base.
Rotate to control the outer rotor to rotate at any speed
Can, by the structure wherein the can transfer of the rotating specimen and external electrical energy and signals attached to the inner rotational member, the inner rotating relative to the stationary base
It is possible to reduce the apparent rotation speed of the rolling
Electrical energy and signals with the rotating specimen rotating at high speed
It is possible to give and receive, and solve the above problems.

The outer rotating body is an outer rotating body input / output terminal.
Have the respective terminal wires of the fixed base input-output terminals arranged on a solid substrate, via the outside of the multipolar multi-contact rotary connector mechanism branched respectively by the outer rotary body, one outer rotation Connect to the outer rotary body input / output terminal provided on the body, and connect the other to the inner rotary body input / output terminal provided on the inner rotary body via the inner multipole / multicontact rotary connection connector mechanism. By said inner rotating body and outer
Between the rotating shafts of the DUT that is attached to the rotating body and
It has become possible to exchange electric energy and signals with the outside .

There is provided a fixed base body, an inner rotary body and an outer rotary body each having a rotating test piece mounting portion at an end thereof, and one or more outer rotary bodies are provided between the fixed base body and the inner rotary body. It is rotatably fitted concentrically through a bearing.
A multi-pole multi-contact rotary connection connector mechanism is provided on the opposing fitting wall surfaces between the fixed base body and the outer rotary body and between the outer rotary body and the inner rotary body, respectively, and the fixed base body,
The inner rotating body is provided with input / output terminals that are electrically connected to the multi-pole / multi-contact rotating connection connector mechanism, and further, each of the rotating members is connected between the fixed base body and the outer rotating body and between the outer rotating body and the inner rotating body. A coreless electric motor is provided that drives the body to rotate directly relative to the fixed base independently of each other, and a rotating test object attached to the inner rotating body by reversibly controlling these electric motors is It is possible to control rotation from low speed to ultra high speed, and to transmit and receive electrical energy and signals to and from the rotating test object through the multi-pole multi-contact rotary connection connector mechanism. It was possible to obtain a slip ring device which itself could be used as a direct rotation test device. As the multipole / multicontact rotary connection connector mechanism, a contact type or non-contact type slip ring mechanism such as a brush type, a needle type, and an induction type can be adopted.

[0008]

[Operation] When the rotating test object has multiple coaxial rotating shafts,
The base of the DUT is connected to the mounting part of the fixed base, the rotary shafts of the DUT are sequentially connected to the outer and inner rotating bodies, and the electric energy rays and various signals wired to the respective rotary shafts are connected. The wires are respectively connected to input / output terminals provided on the outer rotating body or the inner rotating body, which are connected to each other.
The outer rotating body and the inner rotating body rotate independently according to the rotation of each rotating shaft of the rotating test object, and signals and electric energy can be exchanged between the rotating shafts through the slip ring, The output can also be taken out through the input / output terminals provided on the fixed base. Also,
Conversely, electrical energy or a signal can be supplied from the outside to each rotating shaft of the rotating test object via the input / output terminal.
The transmission and reception of these signals and electric energy can be arbitrarily changed by appropriately selecting the wiring of each multipole / multicontact rotary connection connector mechanism. When the DUT has a single-axis rotating shaft that rotates at high speed, it is connected to the inner rotating body by the rotating shaft, and the electric energy lines and / or signal lines of the rotating shaft are connected to the input / output terminals of the inner rotating body. Connect to.
Then, by operating the electric motor to rotate the outer rotating body in the same direction as the rotation direction of the single-spindle rotating shaft, the relative speed between the outer rotating body and the inner rotating body can be reduced. Energy and signals can be transferred to and from the rotated shaft that rotates at high speed.

Further, by providing the electric motor between the inner rotating body and the outer rotating body, the inner rotating body can be positively rotated, and the outer electric motor and the inner electric motor can be mutually rotated. By the action, the rotation of the inner rotating body can be controlled from ultra-low speed to ultra-high speed. Therefore, if the rotating specimen is coupled to the inner rotating body, the rotating specimen can be rotated at an arbitrary speed, and at the same time, supply of electric energy to the rotating specimen and physical information about the rotating specimen. It can send and receive electrical signals, etc. and can be used as a rotation tester.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a sectional view of a multistage slip ring device according to an embodiment of the present invention. The device of the present embodiment is attached to a rotating test object having multiple coaxial rotating shafts to exchange signals between rotating shafts of the rotating test object, or electric energy is applied to a rotating test object that rotates at a single axis at an extremely high speed. 1 shows an embodiment in the case of being applied to supply of power and exchange of signals. The overall structure is as follows: a cylindrical fixed base body 1, an outer rotating body 2 rotatably in one or more stages (one stage in the illustrated embodiment) in a cylinder of the cylindrical fixed base body, and further outside The inner rotating body 3 is rotatably fitted to the rotating body, and the bearings 4 are provided between the fixed base body 1 and the outer rotating body 2 and between the outer rotating body 2 and the inner rotating body 3, respectively. The outer rotating body and the inner rotating body are rotatably fitted to the fixed base body 1 via the bearings. And these fixed substrates,
Flange 5, 6, and 7 for mounting the rotating sample is provided on the tops of the outer rotating body 2 and the inner rotating body 3, respectively. Then, the fixed base 1 and the outer rotating body 2
The outer multi-pole multi-contact slip ring mechanism 9 and the inner multi-pole as a multi-pole multi-contact rotary connection connector mechanism on the fitting wall surfaces of the outer rotor 2 and the inner rotor 3 facing each other. A multi-contact slip ring mechanism 10 is provided. Each pole of the fixed base body input / output terminal 8 provided on the outer peripheral portion of the fixed base body 1 branches inside the outer rotary body 2 via the outer slip ring mechanism 9, and one of them is located near the flange of the outer rotary body 2. Provided outer rotor input / output terminal 11
Of the slip mechanism 10 connected to each pole of the
To the respective poles of the inner rotating body input / output terminal 12 provided near the flange of the inner rotating body. Thereby,
It is possible to supply and / or take out electric energy and signals on the respective axes of the rotating specimen.

Further, an electric motor 15 such as a coreless or frameless motor is provided in parallel between the fixed base body 1 and the outer rotating body 2 on the side opposite to the flange, and is rotated at a high speed by the rotation of the rotating test object. By rotating the outer rotating body in the same direction as the inner rotating body, the relative speed of the inner rotating body with respect to the fixed base can be reduced. In the figure, 16 indicates a coil on the stator side of a coreless / frameless motor, and 17 indicates a permanent magnet on the rotor side.

The apparatus of this embodiment is constructed as described above and used as follows. For example, the rotating test object has a first rotating shaft and a second rotating shaft, which are concentric to each other, on the base,
When the rotating shaft and the second rotating shaft are driven to rotate relative to each other, the flange 5 of the fixed base 1 is fixed to the base of the rotating test object, and the flange 6 of the outer rotating body 2 is rotated. The flange 7 of the inner rotating body 3 is fixed to the first rotating shaft of the specimen under test by a flexible joint or the like directly on the second rotating shaft of the specimen under test. Outer rotor input / output terminals and inner rotor inserts provided on the flange of the multi-stage slip ring device of this embodiment, to which terminals of electric energy lines and various signal lines wired on two rotating shafts are fixed respectively. By connecting to the output terminals respectively, the outer rotating body and the inner rotating body also rotate together with the respective rotating shafts of the rotating test object, and the exchange of signals and electric energy between the rotating bodies is carried out through the slip ring mechanisms 9 and 10. It can be performed, also the output can also be taken out through an output terminal 8 provided on the fixed base 1. Conversely, electrical energy or a signal can be supplied from the outside via the output terminal 8 and the double-entry slip ring mechanisms 9 and 10 to the first rotating shaft and the second rotating shaft of the sample to be rotated.

The wiring between each terminal and each of the inner and outer multi-pole / multi-contact slip ring mechanisms can be arbitrarily selected according to the purpose. For example, as in the above embodiment, the fixed base input / output terminal, By connecting the outer rotating body input / output terminal and the inner rotating body input / output terminal to each other, the outer rotating body input / output terminal and the inner rotating body input / output terminal have inner and outer sides. If they are connected to the output terminals of the fixed base body through separate poles of the multi-pole multi-contact slip ring mechanism, signals and electric energy can be individually transmitted and received.

When the DUT has a single rotating shaft that rotates at a high speed, the flange 7 of the inner rotating body 3 is connected to the rotating shaft of the DUT, and the electric energy line of the rotating shaft is connected. And / or the signal line is connected to the inner rotary body input / output terminal 12 of the inner rotary body 3. And the electric motor 15
Is operated to rotate the outer rotating body 2 in the same direction as the rotating direction of the high speed rotating body, the relative speed between the outer rotating body 2 and the inner rotating body 3 can be reduced, and the rotating body rotates at an ultrahigh speed. It is possible to send and receive electrical energy and signals to the rotating shaft of the rotating test object. For example, the electric motor 15
Is rotated in the same direction at half the speed of the rotating shaft of the rotating specimen, the relative speed between the outer and inner rotating bodies is reduced to half the speed of the rotating specimen. Become 15
Signals and the like can be easily transmitted and received even for a test object that rotates at a high speed of 000 rpm or more. Therefore, when applied to a single-axis high-speed rotating body such as a gyro rotor, a turbine blade, a centrifuge, a polygon mirror, etc., physical information and the like can be directly extracted from the rotating body as an electric signal simultaneously with the supply of electric energy.

FIG. 2 shows another embodiment of the slip ring device of the present invention which can be applied to a rotation tester. In the figure, the same parts as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The main structural difference between the apparatus according to the present embodiment and the apparatus according to the above-described embodiment is that a coreless structure is provided between the inner rotor 2 and the outer rotor 1.
The point is that the frameless electric motor 20 is provided. As a result, in the device of the present embodiment, the inner rotating body 3 can be positively rotated, and the inner rotating body is superposed by the offset synergistic speed due to the independent rotation of the outer electric motor 15 and the inner electric motor 20. Rotation can be controlled from low speed to ultra high speed. That is, if the outer electric motor 20 rotates at the rotation speed No and the inner electric motor 20 rotates at the rotation speed Ni in the same direction, the inner rotating body rotates at the rotation speed (No + Ni).
When both motors rotate in opposite directions, they rotate at the number of revolutions (Ni-No). Therefore, for example, if both motors rotate at the same speed in the same direction, the inner rotating body 3 doubles in speed. The relative speed becomes zero if it is rotated at, and is rotated at the same speed in the opposite direction.

Therefore, by connecting the rotating sample to the flange 7 of the inner rotary body 3, the rotating sample can be rotated at an arbitrary speed and can be used as a rotation tester. FIG. 2 shows a case where a turbine blade rotation test is performed as a rotation tester. In the figure, 30 is a blade as a test object, and a hollow shaft 31 to which the blade is attached is fixed to the flange 7 of the inner rotating body,
A strain gauge 32 is attached to the blade 30, and a signal wire 33 thereof is connected to the inner rotor input / output terminal 12 through the hollow portion of the hollow shaft 31. Therefore, the strain information of the blade 30 measured by the strain gauge 32 is sent to the fixed substrate input / output terminal 8 via the inner multi-pole / multi-contact slip ring mechanism 10 and the outer multi-pole / multi-contact slip ring mechanism 9, and externally. Can be taken out. In the figure, 21 is a stator side coil of the inner electric motor 20, and 22 is a rotor side permanent magnet. Further, reference numeral 34 is a casing for partitioning the rotating test object from the outside.

In the rotation test, by combining the rotation speeds of the electric motor 20 on the inner side and the electric motor 15 on the outer side, the blade 31 can be rotated under desired conditions from ultra-low speed rotation to ultra-high speed rotation. Various information during the rotation test, such as the strain generated in the blade 32 at that time, can be reliably taken out to the outside, which is very useful as a rotation tester. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, each of the outer rotating bodies is constituted by a multi-stage rotating body that is rotatably fitted. If an electric motor is provided between the two, it is possible to make various changes in design, such as rotating the DUT at ultra-high speed and transmitting and receiving signals and electric energy with high precision.

[0018]

The present invention is constructed as described above and has the following special effects. The outer rotating body is fixed between the bases
Since the coreless electric motor is constructed directly,
It can be driven to rotate at any speed, and can rotate outside and inside
The relative speed between the side rotating bodies can be reduced arbitrarily.
It Therefore, the conventional slip ring mechanism sends and receives signals.
It was difficult to perform
Also, it is possible to reliably and accurately supply energy and send and receive signals.
Turbine blades that are used at high speeds
Collecting data for characteristic tests such as centrifugal distortion and destruction of gyros
It is possible. In addition, the
Case, connect each rotary shaft to the inner and outer rotors separately
The outer rotor and inner rotor according to the rotation of each rotary shaft.
Since the body can rotate independently,
By providing an input / output terminal,
And the exchange of electrical energy can be done reliably, and with the outside
You can directly exchange electrical energy and signals. Furthermore, the contract
According to the configuration of claim 3, the inner rotor can be positively rotated, and the inner rotor is controlled to rotate from ultra-low speed to ultra-high speed by the interaction between the outer electric motor and the inner electric motor. It is possible to rotate the DUT to be coupled to the inner rotating body at an arbitrary speed, and also to supply electrical energy to the DUT and an electrical signal such as physical information with the DUT. Can be used as a rotation tester.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a multi-stage slip ring device according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a multistage slip ring device according to another embodiment of the present invention.

[Explanation of symbols]

1 Fixed Machine Body 2 Outer Rotating Body 3 Inner Rotating Body 4 Bearing 8 Fixed Base I / O Terminal 9 Outer Multi-Pole Multi-Contact Slip Ring Mechanism 10 Inner Multi-Pole Multi-Contact Slip Ring Mechanism 11 Outer Rotating Body I / O Terminal 12 Inner Rotation Body input / output terminals 15, 20 Electric motor 30 Blade 32 Strain gauge

Claims (2)

[Claims] 1. An outer rotating body having a fixed base body, an inner rotating body and an outer rotating body each having a rotating specimen mounting portion at an end thereof, and one or more stages of outer rotating body between the fixed base body and the inner rotating body. Are rotatably and concentrically fitted to each other via bearings, and are provided on the fitting wall surfaces facing each other between the fixed base body and the outer rotary body and between the outer rotary body and the inner rotary body, respectively. A contact rotation connection connector mechanism is provided, and at least
The input-output terminals electrically connected to said multipolar multi-contact rotary connector mechanism to the fixed base and the inner rotary member is provided, further
Between the fixed base and the outer rotating body, the fixed base is
It constitutes a stator, and the outer rotating body constitutes a rotor.
A coreless electric motor is provided, and the outer rotating body is fixed to a base body.
To rotate the outer rotating body to an arbitrary rotation speed.
A multi-stage slip ring device, characterized in that rotation control can be performed every time, and electrical energy and signals can be exchanged with a rotating test object attached to the inner rotating body and the outside. 2. The outer rotating body is an end for outer rotating body input / output.
Each fixed terminal input / output terminal provided on the solid base has a terminal, and each pole terminal wiring branches in the outer rotating body through an outer multi-pole multi-contact rotation connecting connector mechanism, and one of them rotates outside. Connected to the outer rotary body input / output terminal provided on the body, the other is further connected to the inner rotary body input / output terminal provided on the inner rotary body through the inner multi-pole multi-contact rotary connection connector mechanism. A multi-stage slipping device according to claim 1. 3. An outer rotary body having one or more stages between the fixed base body and the inner rotary body, which has a fixed base body, an inner rotary body and an outer rotary body each having a specimen-to-be-rotated mounting portion at an end thereof. Are rotatably and concentrically fitted to each other via bearings, and are provided on the fitting wall surfaces facing each other between the fixed base body and the outer rotary body and between the outer rotary body and the inner rotary body, respectively. A contact rotation connection connector mechanism is provided, and an input / output terminal is provided on the fixed base body and the inner rotating body for conducting to the multi-pole multi-contact rotation connection connector mechanism, and further, between the fixed base body and the outer rotating body. , and between the outer rotor and the inner rotating body, said each independently a coreless electric motor to relatively direct rotary drive provided for each rotating body fixed base, reversibly rotating control these of the electric motor The inside rotation by It is possible to control the rotation of the rotated sample to be attached from the ultra-low speed to the ultra-high speed, and to transfer electrical energy and signals to and from the rotated sample via the multi-pole multi-contact rotary connection connector mechanism. A multi-stage slip ring device characterized by being capable of