JP2001272290A - Torque-measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torque-measuring device of easy and sure installation, of accurate and easy torque measurement, having a simple structure, resistance against failures and durability, easy handling, an economical price, no influence of the load in a thrust direction, which can accurately detect torque strain and has accurate measurement accuracy and with only the torque strain generation on a measuring rim. SOLUTION: A hub 1 on an input side, a hub 2 on an output side, and a measuring intermediate body A are provided. The intermediate body A comprises an outer ring A1, an inner ring A2, and a concatenation A3. A measuring rim 5 is formed on a linking part A3 and a strain gage 6 is stuck to the rim 5, so that the torque strain can be detected by the strain gage 6. A boss 2a, a thrust bearing 2c, and a flange 2b are provided on the hub 2 at the output side. The flange of the hub 1 on the input side, the outer ring A1, and the flange 2b are linked, and the inner ring A2 and the boss 2a are linked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, industrial machines used in all fields, automobiles, boats,
The present invention relates to a torque measuring device devised so as to be able to measure the torque accurately and easily in a machine or the like having an appropriate power transmission portion.

[0002]

2. Description of the Related Art Conventionally, as this kind of torque measuring means, there is, for example, a torque display device as disclosed in Japanese Patent Application Laid-Open No. 8-35895, which is connected to transmit torque. A first component and a second component,
Torque transmitting means for connecting the first component and the second component; torque detecting means for generating a signal corresponding to the transmitted torque in response to the torque transmitted by the torque transmitting means; The signal transmission means including an electromagnetic wave transmission unit that receives the signal generated by the detection means and transmits an output signal corresponding to the torque to reception means that supplies a signal corresponding to the transmitted torque, Rotatable about an axis, wherein the first portion is an inner radially inward portion with respect to the axis and the second portion is an outer radially outer portion with respect to the axis; The means includes at least one radially and circumferentially extending torque transmitting element extending between the inner and outer portions and transmitting torque therebetween.

[0003]

However, in the torque display device as described above, when a large load in the thrust direction is applied, the torque transmission element is elastically deformed in the thrust direction by the load, and an accurate torque only is obtained. There were difficult points, etc. that were difficult to measure.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention can solve the above-mentioned difficulties and the like, can be installed easily and reliably, can measure torque accurately and easily, and has a structure. The torque measuring device according to claim 1 is created to provide a torque measuring device that is simple, hard to break down, has excellent durability, is easy to handle, is economical, and has high measurement accuracy. An input-side hub 1 attached to the end of the input-side rotary shaft, an output-side hub 2 attached to the output-side end of the rotary shaft, and an intermediate between the input-side hub 1 and the output-side hub 2. And a measurement interposer A, which is mounted thereon.
Comprises an outer ring portion A1, an inner ring portion A2, and a connecting portion A3 for connecting the outer ring portion A1 and the inner ring portion A2.
A rim 5 for measurement is formed on the rim 5 and a strain gauge 6 is attached to the rim 5 for measurement.
The output hub 2 has a boss 2a fixed to an end of a rotation shaft on the output side, and a boss 2a. And a flange portion 2b rotatably mounted via a thrust bearing 2c. A flange portion of the input side hub 1, an outer ring portion A1 of the measurement intermediary body A, and a flange portion 2b of the output side hub 2 are provided. And the inner ring portion A2 of the measurement body A
And a means for connecting the boss portion 2a of the output side hub 2 with the boss portion 2a.

Further, in the torque measuring device according to the second aspect, the input side hub 1 attached to the end of the input side rotating shaft and the output side mounted to the end of the output side rotating shaft. Hub 2
And an intermediary body A for measurement interposed between the input side hub 1 and the output side hub 2. The output side hub 2 has a boss 2a fixed to an end of the output side rotating shaft. The boss portion 2a is provided with a flange portion 2b rotatably mounted via a thrust bearing 2c. The measurement intermediary body A is provided on the flange portion of the input side hub 1 and the flange portion 2b of the output side hub 2. An outer ring portion A1 to be connected, an inner ring portion A2 connected to the boss portion 2a of the output side hub 2, and a connecting portion A3 connecting the outer ring portion A1 and the inner ring portion A2. A rim 5 is formed, and a strain gauge 6 is attached to the measurement rim 5 so that the torque strain generated in the measurement rim 5 can be detected by the strain gauge 6, and the data of the detected torque strain is used for measurement. It is formed so that it can be transmitted from the transmission unit inside the package A. With the data of the torque strain received by outer receiver 20 provided in the vicinity of the measuring medium members A, it analyzes the data in the data analysis and display unit 21, employing a means for constructing such that show.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated examples. The present invention is, for example, a torque measuring device capable of accurately measuring the torque of various industrial machines, automobiles, boats, and other machines having a rotating shaft that appropriately transmits power. The torque measuring device is configured such that an input side hub 1, an output side hub 2, and a measurement intermediary body A are interposed between a pair of rotating shafts that appropriately transmit power.

The input side hub 1 is mounted on the end of the input side rotary shaft, the output side hub 2 is mounted on the output side of the rotary shaft end, and the measuring intermediary body A is connected to the input side rotary shaft. Between the output side hub 1 and the output side hub 2. Moreover, the output side hub 2 is provided with a boss 2a fixed to the end of the output side rotating shaft.
And a flange portion 2b rotatably mounted via a thrust bearing 2c on the boss portion 2a near the measurement intermediary body A.

[0008] Further, the measurement intervening body A has an outer ring portion A1 connected to the input side hub 1 in a state where one end surface thereof is in contact with the intervening body A,
In addition, it is composed of an inner ring portion A2 connected to the output side hub 2 with the end faces in contact, and a connecting portion A3 connecting the outer ring portion A1 and the inner ring portion A2. Moreover, a rim 5 for measurement is formed on the connecting portion A3, and a strain gauge 6 is attached to the rim 5 for measurement, so that the torque strain generated on the rim 5 for measurement can be detected by the strain gauge 6.

At this time, a flange portion of the input side hub 1 and
The outer ring portion A1 of the measurement body A and the flange portion 2b of the output side hub 2 are connected via a fixing screw 11, and the inner ring portion A2 of the measurement body A and the boss portion of the output side hub 2 are connected. 2a is
They are connected via fixing screws 12. That is, the load in the thrust direction from the rotation shaft on the input side is applied to the input side hub 1.
Is transmitted to the outer ring portion A1 of the measurement intermediary body A from the flange portion, and further transmitted from the outer ring portion A1 of the measurement interposition body A to the flange portion 2b of the output side hub 2, and the flange portion of the output side hub 2 2b through the thrust bearing 2c
a is not transmitted to the measurement rim 5 of the measurement intermediary body A, and only the torque distortion generated in the measurement rim 5 is not affected by the load in the thrust direction from the rotation shaft on the input side. It is configured so that the strain gauge 6 can accurately detect it.

In addition, the data of the detected torque distortion is formed so that it can be transmitted from a transmission unit appropriately provided in the measurement intermediary A, and the data of the torque distortion from the transmission unit is transmitted to the measurement transmission unit A. Receiver 2 provided near the outside of body A
0, and this data can be analyzed and displayed by the data analysis / display unit 21 (see FIG. 1).

The input-side hub 1 has a substantially thick short cylindrical boss portion attached to an end of the input-side rotating shaft by a suitable fixing means, and an outer peripheral surface portion of the boss portion near the measurement intermediary body A. A plurality of insertion holes are formed in a portion of the flange portion near the outer periphery, and the outer ring portion A1 of the measurement intermediary body A is fixed to the outer ring portion A1 through a fixing screw 11 inserted into the insertion hole. The flange portion 2b of the output side hub 2 is configured to be connectable. Note that the input side hub 1 is formed so as to contact only one end surface of the outer ring portion A1 of the measurement intermediary body A. Incidentally, the specific configuration, shape, dimensions, material of the input side hub 1, the specific configuration, shape, dimensions, material of the boss portion, specific fixing means to the rotating shaft, the specific configuration, shape, dimensions of the flange portion, The material, the specific shape, size, number, arrangement position, and the like of the insertion holes are not limited to those shown in the drawings, and can be freely set and changed as appropriate.

The output-side hub 2 has a substantially thick cylindrical boss portion 2a attached to an end of the output-side rotary shaft by an appropriate fixing means, and an outer peripheral surface of the boss portion 2a near the measurement intermediary body A. Bearing 2c mounted on the step provided in
And a substantially thick-cylindrical flange portion 2b which is provided on the thrust bearing 2c and can rotate smoothly with respect to the boss portion 2a. And the flange part 2
b, a plurality of female screw holes are formed near the outer periphery, and the fixing screw 11 is screwed into the female screw holes to form a flange portion of the input side hub 1, an outer ring portion A1 of the intervening body A for measurement, The flange portion 2b of the output side hub 2 is configured to be connectable. Also, a plurality of female screw holes are formed in the boss portion 2a, and the inner ring portion A2 of the intervening body A for measurement can be connected via a fixing screw 12 screwed into the female screw hole.
By the way, the thrust bearing 2c has a flange 2b.
The thrust load applied to the boss portion 2a can be reliably and stably received by the boss portion 2a.
Is adopted so as to be able to rotate smoothly. Note that the specific configuration, shape,
Dimensions, material, specific configuration, shape, dimensions, material of boss portion 2a, specific fixing means to rotating shaft, specific shape, dimensions, number, arrangement position of female screw holes, specific configuration of flange portion 2b , Shape, dimensions, material, specific shape, dimensions,
Number, arrangement position, specific configuration of thrust bearing 2c,
The shape, size, material, arrangement position, and the like are not limited to those shown in the drawings, and can be freely set and changed as appropriate.

The intervening body A for measurement includes an end face near the outer periphery of the flange portion of the input side hub 1 and the flange portion 2b of the output side hub 2.
Substantially annular outer ring portions A1 which are respectively in close contact with the outer peripheral end faces of
A substantially annular inner ring portion A2 closely contacting the inner peripheral end surface of the boss portion 2a of the output side hub 2, and a connecting portion A3 provided so as to connect the inner peripheral surface of the outer ring portion A1 and the outer peripheral surface of the inner ring portion A2. The outer ring portion A1 has a plurality of insertion holes through which the fixing screws 11 are inserted, and the inner ring portion A2 has a plurality of insertion holes through which the fixing screws 12 are inserted.
The outer ring portion A1 is provided on both end portions of the measurement interposed body A.
A substantially thin annular cover 10 covering the connecting portion A3 is provided so as to cover the connecting portion A3 over the inner ring portion A2 and eliminates physical effects on the strain gauge 6 mounted on the connecting portion A3. Thus, the configuration is such that stable measurement is always possible. The specific configuration, shape, dimensions, and material of the intervening body A for measurement, the specific configuration, shape, dimensions, and material of the outer ring portion A1, the specific shape, dimensions, number, arrangement position, and inner ring portion of the insertion holes The specific configuration, shape, size, material, specific shape, size, number, arrangement position, and the like of the insertion holes of A2 are not limited to those in the illustrated example, and can be freely set and changed as appropriate. is there.

The connecting portion A3 is formed to be thin in the direction of the center line of the measurement body A (coincident with the direction of the center line of the rotating shaft) and to be long along the circumferential direction around the center line. A plurality of measurement rims 5 each having a substantially rectangular thin plate shape, and a substantially rectangular thin plate that is long along the center line direction of the measurement interposer A and is formed to be thin in a circumferential direction around the center line. And a plurality of connecting ribs 7 having a shape. In addition, the plurality of measurement rims 5 and the connection ribs 7 are alternately arranged along a circumferential direction around the center line of the measurement intermediary body A (which coincides with the center line of the rotation axis). . That is, the measurement rim 5 is formed so as to be able to exert a high stress with respect to the force in the rotation direction, and to generate a torque distortion in response to a load in the rotation direction from the rotation shaft. The connecting rib 7 is formed so as to exert a high stress against a force in the thrust direction, and the measuring rim 5 and the connecting rib 7 are
The outer ring portion A1 and the inner ring portion A2 are formed so as to be connected in a well-balanced manner. As a result, the torque can be measured stably with high sensitivity, and the measurement accuracy of the torque is considered to be higher. The specific configuration, shape, size, material, number, arrangement position, specific configuration of the connecting rib 7 of the measurement rim 5,
The shape, size, material, number, arrangement position, and the like are not limited to those shown in the drawings, but can be freely set and changed as appropriate.

As the strain gauge 6, for example, a resistance wire strain gauge or the like is used, and is attached to the surface of the rim 5 for measurement. The strain gauge 6
Are arranged so as to be parallel to the rotation direction of the measurement interposer A, and are configured to be detected only for a load in the rotation direction. Incidentally, the specific configuration, shape, dimensions, material, number, arrangement position, specific attaching means, and the like of the strain gauge 6 are not limited to those in the illustrated example, but can be freely set and changed as appropriate. is there.

In the figure, reference numeral 15 denotes an intervening body A for measurement (outer ring portion A
This antenna is provided around the outer peripheral surface of 1).
5 is formed so that the receiver 20 can reliably and stably receive a radio wave (for example, an FM wave) transmitted from a transmitter incorporated in the measurement body A and connected to the strain gauge 6. It is a thing. Note that the specific configuration, shape,
The dimensions, materials, arrangement positions, specific mounting means, and the like are not limited to those shown in the drawings, but can be freely set and changed as appropriate. The transmission of the torque distortion data from the transmitter to the receiver 20 can use radio waves other than FM waves, appropriate light, electromagnetic waves, or other appropriate means.

The receiver 20 is disposed in the vicinity of the antenna 15 and is configured to receive the torque distortion data detected by the strain gauge 6 reliably and accurately. Further, the data analysis / display unit 21 is configured to analyze the torque distortion data from the receiver 20 based on the torque distortion data, so that anyone can easily see the result. The specific configuration, shape, size, arrangement position, data analysis / display unit 2 of the receiver 20
The specific configuration, shape, size, arrangement position, and the like of 1 are not limited to those in the illustrated example, but can be freely set and changed as appropriate.

[0018]

Accordingly, the torque measuring device according to the first aspect of the present invention provides an input side hub 1 mounted on an end of the input side rotating shaft.
And an output side hub 2 attached to an end of the output side rotating shaft.
And an intermediary body A for measurement interposed between the input side hub 1 and the output side hub 2.
And an inner ring portion A2, and a connecting portion A3 connecting the outer ring portion A1 and the inner ring portion A2. A rim 5 for measurement is formed on the connecting portion A3, and a strain gauge 6 is attached to the rim 5 for measurement. The output hub 2 is configured to be able to detect the torque distortion generated in the measurement rim 5 by the strain gauge 6, and a boss 2a fixed to the end of the output-side rotary shaft, and a thrust bearing on the boss 2a. Flange 2b rotatably mounted via 2c
A flange portion of the input side hub 1, an outer ring portion A1 of the measurement intermediary body A, and a flange portion 2b of the output side hub 2 are connected to each other, and an inner ring portion A2 of the measurement intermediary body A; Output side hub 2
The boss 2a is connected to the boss 2a, so that the torque measuring device can be easily installed in industrial machines used in various fields, such as automobiles, boats, and other machines having a power transmission portion as appropriate. In addition, the torque can be reliably measured, and the torque can be accurately and easily measured. Moreover, the torque measuring device has a simple structure, is hardly broken down, has excellent durability, is easy to handle, and is economical.

In particular, the output side hub 2 includes a boss 2a fixed to the end of the output side rotating shaft, and a flange 2b rotatably mounted on the boss 2a via a thrust bearing 2c. The flange portion of the input side hub 1, the outer ring portion A1 of the measurement intermediary body A, and the flange portion 2b of the output side hub 2 are connected, and the inner ring portion A2 of the measurement interposition body A and the output side are connected. Since the boss portion 2a of the hub 2 is connected, the load in the thrust direction from the rotation shaft on the input side is transmitted from the flange portion of the input side hub 1 to the outer ring portion A1 of the intermediate body A for measurement. Is transmitted from the outer ring portion A1 of the intermediate body A to the flange portion 2b of the output side hub 2, and the flange portion 2b of the output side hub 2 is transmitted.
b to the boss 2a via the thrust bearing 2c so that the measurement rim 5 of the measurement intermediary A is not affected by the load in the thrust direction from the input-side rotary shaft at all. Therefore, only the torque distortion occurs on the measurement rim 5, and the torque distortion can be accurately detected by the strain meter 6. And thrust bearing 2
Accordingly, even when a thrust load is applied to the flange portion 2b, the flange portion 2b can smoothly rotate with respect to the boss portion 2a, and the torque is transmitted from the flange portion 2b to the boss portion 2a.
Is not likely to be transmitted. That is, a torque distortion is generated in the measurement rim 5 in response to the torque from the rotating shaft, and the torque distortion can be reliably detected by the strain gauge 6 and the measurement accuracy is high.

The torque measuring device according to claim 2 is
An input side hub 1 attached to an end of the input side rotating shaft, an output side hub 2 attached to an end of the output side rotating shaft, and an interposition between the input side hub 1 and the output side hub 2. The output side hub 2 is provided with a boss 2a fixed to the end of the output side rotating shaft, and the boss 2a is rotatably mounted on the boss 2a via a thrust bearing 2c. The intermediate body A for measurement includes an outer ring portion A1 connected to the flange portion of the input side hub 1 and the flange portion 2b of the output side hub 2, and a boss portion 2a of the output side hub 2. And a connecting portion A3 connecting the outer ring portion A1 and the inner ring portion A2. A rim 5 for measurement is formed on the connecting portion A3, and a strain gauge 6 is attached to the rim 5 for measurement. It is configured such that the torque distortion generated in the measurement rim 5 can be detected by the strain gauge 6. The receiver 20 is formed so that the data of the torque distortion can be transmitted from a transmission unit provided inside the measurement body A, and the torque distortion data from the transmission part is provided near the outside of the measurement body A. The data analysis / display unit 21 is configured to receive and receive the data, so that the data analysis / display unit 21 is provided with an industrial machine used in all fields, an automobile, a boat, and other appropriate power transmission parts. In a machine or the like, the installation of the torque measuring device can be performed easily and reliably, and the torque can be measured accurately and easily. Moreover, the torque measuring device has a simple structure, is hardly broken down, has excellent durability, is easy to handle, and is economical.

The output side hub 2 has a boss 2a fixed to the end of the output side rotating shaft, and a flange 2b rotatably mounted on the boss 2a via a thrust bearing 2c. The intermediate body A for measurement includes an outer ring portion A1 connected to the flange portion of the input side hub 1 and a flange portion 2b of the output side hub 2, and an inner ring portion A2 connected to the boss portion 2a of the output side hub 2. And a connecting portion A3 connecting the outer ring portion A1 and the inner ring portion A2. A rim 5 for measurement is formed on the connecting portion A3, and a strain gauge 6 is attached to the rim 5 for measurement. The load in the thrust direction from the rotation shaft on the input side is transmitted from the flange portion of the input side hub 1 to the outer ring portion A1 of the intervening body A for measurement because the torque distortion generated in the input side hub 1 is detected by the strain gauge 6. , And output from the outer ring portion A1 of the intervening body A for measurement. Is transmitted to the flange portion 2b of the hub 2, it will be transmitted to the boss portion 2a from the flange portion 2b of the output-side hub 2 through the thrust bearing 2c,
Since the rim 5 for measurement of the intermediary body A for measurement does not receive any influence of the load in the thrust direction from the rotation shaft on the input side, only the torque distortion occurs on the rim 5 for measurement. The torque distortion can be accurately detected by the strain gauge 6. In addition, even if a thrust load is applied to the flange 2b by the thrust bearing 2c, the flange 2
b can be smoothly rotated with respect to the boss 2a, and there is no fear that torque is transmitted from the flange 2b to the boss 2a. That is, a torque distortion is generated in the measurement rim 5 in response to the torque from the rotating shaft, and the torque distortion can be reliably detected by the strain gauge 6 and the measurement accuracy is high.

In particular, the data of the detected torque distortion is formed so that it can be transmitted from a transmitting section provided inside the measuring body A, and the torque distortion data from this transmitting section is transmitted to the outside of the measuring body A. The data is received and received by the receiver 20 provided in the vicinity, and the data can be analyzed and displayed by the data analysis / display unit 21. Therefore, even in the case where the rotating shaft rotates at high speed, the strain gauge 6 can be used. The data of the detected torque distortion can be reliably analyzed and displayed on the data analysis / display unit 21.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view illustrating a torque measuring device according to the present invention.

FIG. 2 is a vertical sectional side view illustrating a torque measuring device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Input side hub 2 Output side hub 2a Boss part 2b Flange part 2c Thrust bearing A Intermediate body for measurement A1 Outer ring part A2 Inner ring part A3 Connecting part 5 Rim for measurement 6 Strain gauge 7 Connecting rib 10 Cover 11 Fixing screw 12 Fixing Screw 15 Antenna 20 Receiver 21 Data analysis / display unit

Claims (2)

[Claims] An input-side hub mounted on an end of an input-side rotary shaft, an output-side hub mounted on an output-side end of a rotary shaft, and an intermediate portion between the input-side hub and the output-side hub. A measurement intermediary body is provided, and the measurement intermediary body includes an outer ring portion, an inner ring portion, and a connecting portion that connects the outer ring portion and the inner ring portion. A strain gauge is attached to the measurement rim, and a torque distortion generated in the measurement rim is configured to be detected by the strain gauge. The output side hub has a boss portion fixed to an end of the output side rotation shaft. And a flange portion rotatably mounted on the boss portion via a thrust bearing, and connects the flange portion of the input side hub, the outer ring portion of the measurement interposer, and the flange portion of the output side hub. A torque measuring device, wherein an inner ring portion of the measurement interposer is connected to a boss portion of the output side hub. . 2. An input-side hub mounted at an end of an input-side rotary shaft, an output-side hub mounted at an end of an output-side rotary shaft, and an intermediate portion between the input-side hub and the output-side hub. The output side hub includes a boss portion fixed to the end of the output side rotation shaft, and a flange portion rotatably mounted on the boss portion via a thrust bearing. With
The measurement intermediary body connects the outer ring portion connected to the flange portion of the input side hub and the flange portion of the output side hub, the inner ring portion connected to the boss portion of the output side hub, and connects the outer ring portion and the inner ring portion. A rim for measurement is formed in this connection part, a strain gauge is attached to the rim for measurement, and a torque strain generated in the rim for measurement is configured to be detected by the strain gauge. The torque distortion data is formed so that it can be transmitted from a transmission unit provided inside the measurement body, and the torque distortion data from this transmission unit is received by a receiver provided near the outside of the measurement body. A torque measuring device characterized in that the data can be analyzed and displayed by a data analysis / display unit.