KR20170058160A - Torsion meter calibration apparatus and method - Google Patents

Abstract

The present invention relates to a torsion meter calibration apparatus and a calibration method, comprising: a shaft mounting portion on which a shaft is mounted on a horizontal state; a load adjusting portion adjusting a load applied to the shaft using a balance; a strain gauge provided on the shaft measuring torsion stress applied to the shaft; and a torsion meter measuring torque and horsepower using a detection signal outputted from the strain gauge displaying the measured torque and horsepower values. As such, a load is applied using a standard balance provided on the shaft in a horizontal state; and in addition, a torsion meter is able to precisely be calibrated by comparing the torque value measured by detecting actual torsion stress applied to the shaft with a standard torque value.

Description

[0001] TOROSION METER CALIBRATION APPARATUS AND METHOD [0002]

The present invention relates to a torsion meter calibrating apparatus and a calibrating method, and more particularly, to a torsion meter calibrating apparatus and a calibrating method for measuring a twist of a propeller shaft during a trial operation of a ship.

This technology is a calibration device of a yard torsion meter used to measure the twist of a propeller shaft of a ship when a ship is started.

The method of measuring the horsepower of a ship includes a measuring method using a torsion meter, a measuring method using a dynamic load indicator diagram, a measuring method using a dynamometer, and a measuring method using a turbocharger .

Among them, horsepower measuring method using a torsion meter which is most commonly used is to measure a horsepower by torsion stress by attaching a strain gauge to a propeller shaft of a ship.

For example, FIG. 1 is a configuration diagram of a horsepower measuring apparatus using a torsion meter according to the prior art.

As shown in FIG. 1, an apparatus for measuring horsepower using a torsion meter according to the related art is installed in a propeller shaft (hereinafter referred to as "shaft") 3 for transmitting the driving force of the engine 1 to the propeller 2 A strain gauge 4 for sensing a torsional stress acting on the shaft 3, a RPM sensor 5 for sensing the number of revolutions of the shaft 3, a sensing signal output from the strain gauge 4 and the RPM sensor 5, And a torsion meter 6 for measuring and displaying the torque, the horsepower and the RPM acting on the shaft 3 using the torque sensor 6.

The applicant of the present invention has also disclosed a patent application for a marine horsepower measuring apparatus using a torsion meter and a strain gauge as disclosed in Patent Document 1 below.

Patent Document 1 discloses a strain gauge installed on both engines for measuring a torsional stress, an rpm sensor installed to look at the engine to sense the rotational speed, a transmitter module installed in each engine and transmitting measured torsional stress data A torsion meter for displaying the data received from the first transmission / reception antenna, an analogue output for converting the data value displayed in the torsion meter to an analog value, a torsion meter Channel precision horsepower measuring device and a horsepower measuring method configuration of a biaxial propulsion vessel measuring a horsepower acting on a pair of shafts connected to both engines by a single equipment including a computer having a second transmitting and receiving antenna connected to transmit and receive measured values .

On the other hand, ship torsion meter equipment for horsepower measurement is attached to each ship, and in order to verify the performance of the vessel torsion meter at the time of commissioning of the ship, an on-site torsion meter and a ship torsion meter To make comparative measurements.

In particular, in 2015, the International Organization for Standardization (ISO) has been amended to perform calibration for all items of instruments used in commissioning of ships through ISO 15016: 2015 .

For this reason, the on-site torsion meter should be checked to ensure that torque, horsepower, and RPM values are properly measured and displayed prior to commissioning.

Korean Patent Publication No. 10-2009-0027366 (published on March 17, 2009)

For example, FIG. 2 is a configuration diagram of a torsion meter calibration apparatus according to the prior art.

Conventionally, for the calibration of the torsion meter, the strain gauge (strain gage) is measured by using the values of the gravity acceleration, the active leg number of the wheestone bridge, the gauge coefficient of the strain gauge, the resistance value of the strain gauge, A shunt resistance value corresponding to a torsion calculation value expected in a load operation is calculated.

2, the torsion meter calibration apparatus according to the related art includes a torsion meter 6 in which a calculation program for calculating the horsepower according to the specifications of the engine and the shaft is received by receiving the RPM and the torque value, And a resistive box (for example, a decade resistance box) 8 for inputting the calculated shunt resistance value into the torsion meter 6 are input to the torsion meter 6.

Thus, conventionally, the RPM value according to the calculated shunt resistance value and the specifications of the engine and the shaft of the ship are artificially input to the torsion meter 6, and whether the torque, horsepower, and RPM values are output stepwise Only electronic verification was possible.

Therefore, in the above-described conventional method, the torque value outputted when a load acts substantially on the strain gauge attached to the shaft can not be accurately confirmed.

As a result, the torsion meter calibration apparatus according to the prior art has a problem in that the precision of the torsion meter is difficult to correct, the reliability of the shipowner and the shipowners is lowered, and the human, time and economic costs required for the calibration work increase.

An object of the present invention is to provide a torsion meter calibrating apparatus and a calibrating method for calibrating a torsion meter by measuring a torque value outputted according to a load acting on a strain gauge installed on an actual axis will be.

Another object of the present invention is to provide a torsion meter calibrating device and a calibrating method which can improve the reliability by allowing a precise calibrating operation of the torsion meter.

In order to achieve the above object, a torsion meter calibrating apparatus according to the present invention is characterized in that a load is applied to a shaft provided in a horizontal state using a standard weight, a torsional stress acting on a strain gauge installed on the shaft is sensed, The torsion meter may be calibrated by comparing a torque value measured at the torque arm, a length of the torque arm connected to the shaft, and a standard torque value calculated using the weight of the standard weight installed on the torque arm.

The present invention relates to a strain gauge for measuring a torsional stress exerted on the shaft, a load adjusting section for adjusting a load acting on the shaft using the weight, a strain gauge for measuring a torsional stress acting on the shaft, And a torsion meter for measuring the torque and the horsepower using the sensing signal output from the strain gauge and displaying the measured torque value and the horsepower value.

The present invention may further comprise a horizontal adjustment unit for adjusting the rotation angle of the torque arm so that the shaft maintains a horizontal state, an RPM reference unit for inputting RPM according to engine and shaft specifications to the torsion meter, And a telemetry module for transmitting the signal to the torsion meter.

Wherein the shaft mounting portion comprises: a support member provided on the base and rotatably supporting the torque arm; a moving unit slidably movable along the base; A stationary unit fixed to prevent movement of the mobile unit, and a support unit installed in the mobile unit and supporting the rear end of the shaft.

Wherein the shaft is formed by reducing an actual axis at a predetermined ratio, and a coupling protrusion and an insertion groove are formed at the tip and the rear end of the shaft so as to be coupled to the support member and the support unit, respectively, And a coupling groove is formed at a rear end of the rotary shaft, the coupling groove being formed at a distal end of the shaft.

The mobile unit includes a movable body slidably moving along both ends of the base, a first handle mounted on one side of the movable body, and a rack provided on a lower surface of the base, And a rotating gear which is rotated by the rotating lever to move the moving body, wherein the fixing unit includes a rotating lever which is rotatably installed on one side of the moving body, and a rotating lever which is installed at an inner end of the rotating lever, And a fixing member fixed to the base.

Wherein the support unit includes a support block installed on an upper surface of the movable body, a coupling shaft provided on a front surface of the support block and engaged with a rear end of the shaft, and a control unit that decelerates a rotational force transmitted from the horizontal control unit according to a predetermined reduction ratio, And a speed reducer for transmitting to the coupling shaft.

Wherein the torque arm is engaged with the rotation shaft of the shaft mounting portion and is rotated by the rotation of the rotation shaft, and the weight is sequentially increased in number at one end of the torque arm so as to gradually increase the load acting on the shaft .

Wherein the horizontal adjustment portion includes a leveling portion provided on the torque arm, an adjustment block connected to one side of the shaft mounting portion, a second handle rotatably installed on one side of the adjustment block, And a transmission gear for transmitting a rotational force to the support unit of the shaft mounting portion, so that the shaft is rotated to maintain the torque arm in a horizontal state.

The present invention further includes a control unit for controlling driving of a driving motor provided in each device in accordance with a detection signal of a detection sensor installed in each of a moving unit and a fixed unit, a load adjusting unit and a horizontal adjusting unit of the shaft mounting unit, And automates the calibration operation.

According to another aspect of the present invention, there is provided a method of calibrating a torsion meter, comprising the steps of: (a) installing a weight on a torque arm connected to a shaft installed in a horizontal state; (b) (C) measuring the torque at the torsion meter using the sense signal of step (b) and displaying the measured torque value, and (d) And calibrating the torsion meter by comparing the standard value of the torque calculated using the length of the torque arm and the weight of the weight with the measured value measured in the step (c).

(E) After performing the step (c), it is checked whether the weight of the weight installed on the torque arm is a predetermined maximum weight. If the weight is not yet reached, one weight is added Wherein the steps (b), (c), and (e) are repeated until the weight of the weight reaches the maximum weight.

The step (d) includes the steps of: (d1) generating a signal of a waveform having a frequency corresponding to a measured value obtained by measuring a maximum rotation number of the shaft using an RPM reference, and inputting the signal to the torsion meter; (d2) Measuring the horsepower and RPM together with the torque using the signal input from the RPM reference unit, displaying the measured torque value, horsepower value and RPM value on the display panel, and (d3) And calibrating the torsion meter using the torsion meter.

As described above, according to the torsion meter calibrating apparatus and the calibrating method of the present invention, a load is applied to a shaft provided in a horizontal state using a standard weight, and an actual torsional stress acting on the shaft is sensed, An effect is obtained in which the torsion meter can be precisely calibrated by comparing the standard torque values.

That is, according to the present invention, since the torque value output by the load acting on the shaft can be confirmed in the strain gauge attached to the actual shaft, the reliability of the result of horsepower measurement using the torsion meter can be improved .

Further, according to the present invention, since the precise calibration work of the torsion meter is possible, it is possible to reduce the human, temporal, and economic costs that are used in the calibration work of the torsion meter and to improve the workability.

1 is a configuration diagram of a horsepower measuring apparatus using a torsion meter according to the related art,
2 is a configuration diagram of a torsion meter calibration apparatus according to the related art,
3 is a block diagram of a torsion meter calibration apparatus according to a preferred embodiment of the present invention,
Figure 4 is a perspective view of a strain gauge mounted on the shaft and shaft,
5 is a perspective view of the shaft mounting portion, the load adjusting portion and the horizontal adjusting portion shown in Fig. 3,
6 is a rear view of the shaft mounting portion, the load adjusting portion and the horizontal adjusting portion shown in Fig. 5,
FIG. 7 is a flow chart illustrating steps of a torsion meter calibration method according to a preferred embodiment of the present invention; FIG.

Hereinafter, a torsion meter calibration apparatus and a calibration method according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present specification, the direction in which the torque arm is installed around the base is referred to as the front, the direction opposite thereto is referred to as the rear, the direction in which the weight is provided around the base is referred to as the right, and the opposite direction is referred to as the left.

In this embodiment, a calibration device and a calibration method of a torsion meter for measuring a horsepower of a propeller shaft that transmits a driving force of an engine to a propeller in a ship will be described.

However, the present invention is not necessarily limited thereto. The present invention can be applied to rotational shafts of various shapes and sizes, which transmit driving force from a driving source such as an aircraft, an automobile, a generator, .

3 is a block diagram of a torsion meter calibration apparatus according to a preferred embodiment of the present invention.

In the present invention, a load is applied to a shaft provided in a horizontal state using a standard weight, a torsional stress acting on a strain gauge installed on the shaft is sensed, and the torque value measured by the torsion meter, the length of the torque arm, It is possible to precisely calibrate the torsion meter by comparing the calculated standard torque values.

3, the torsion meter calibrating apparatus 10 according to the preferred embodiment of the present invention includes a shaft mounting portion 20 in which a shaft 11 is horizontally mounted, a standard weight 31 A strain gauge 40 and a strain gauge 40 which are provided on the shaft 11 and measure a torsional stress acting on the shaft 11, a load adjusting section 30 which adjusts a load acting on the shaft 11, And a torsion meter 50 for measuring the torque and horsepower using the sensing signal outputted from the torque sensor 50 and displaying the measured torque value and horsepower value.

The torsion meter calibrating apparatus 10 according to the preferred embodiment of the present invention includes a horizontal adjustment unit 30 for adjusting the rotation angle of the torque arm 32 provided in the load adjustment unit 30 so that the shaft 11 maintains a horizontal state, The RPM reference device 70 and the strain gauge 40 for inputting the RPM of the shaft 11 according to the specification of the engine and the shaft 11 to the torsion meter 50 are connected to the torsion meter 50 (Not shown).

The shaft 11 can be manufactured by calibrating the torsion meter by a preset ratio using a material of the same or similar material as that of the actual propeller shaft, such as a forged steel material.

Figure 4 is a perspective view of a strain gauge mounted on the shaft and shaft.

In this embodiment, the shaft 11 can be manufactured in the form of a round bar having a length of about 200 mm and a diameter of about 50 mm, as shown in Fig.

A coupling protrusion 111 is formed at one end of the shaft 11 so as to be engaged with a coupling groove formed in the shaft mounting portion 20. The other end of the shaft 11 is provided with an insertion protrusion An insertion groove 112 to be inserted can be formed.

For example, the coupling protrusion 111 and the insertion groove 112 may be formed in a hexahedron shape having a substantially rectangular cross section.

The strain gauges 40 are provided in four to constitute a full bridge and each strain gauge 40 can be installed on the outer circumferential surface of the shaft 11 in an attaching manner.

And each terminal of the full bridge constructed using the four strain gauges 40 can be connected to the terminal 41 and the telemetry module 80 via wires.

The strain gauge 40 senses a torsional stress acting on the shaft 11 by the weight of the load regulator 30 and the sensing signal of the strain gauge 40 is transmitted through the telemetry module 80, (50).

Next, the configuration of the shaft mounting portion, the load adjusting portion, and the horizontal adjusting portion will be described in detail with reference to FIG. 5 and FIG.

FIG. 5 is a perspective view of the shaft mounting portion, the load adjusting portion and the horizontal adjusting portion shown in FIG. 3, and FIG. 6 is a rear view of the shaft mounting portion, the load adjusting portion and the horizontal adjusting portion shown in FIG.

The shaft mounting portion 20, the load adjusting portion 30 and the horizontal adjusting portion 60 are provided on the base 12.

In order to prevent the torque arm 31 and the weight 32 of the load control unit 30, which will be described below, from interfering with the ground surface, the base 12 is formed in a substantially rectangular plate- , The leg portion may be provided such that the base 12 is disposed at a preset height.

The shaft mounting portion 20 includes a support member 21 provided at a front end portion of the base 12 for rotatably supporting the torque arm 31 and a support member 21 provided at the rear end portion of the base 11, A fixed unit 23 for fixing the movable unit 22 in a state in which the shaft 11 is horizontally installed between the support unit 21 and the movable unit 22 so as to be slidable with respect to the movable unit 22, And a support unit 24 installed on the mobile unit 23 and coupled with and supporting the rear end of the shaft 11. [

Each of the support members 21 may be formed as a pair of support plates formed in a square shape and may be disposed along the width direction of the base 11 at the tip end of the base 11.

The support member 21 is provided with a rotation shaft 25 through the torque arm 31 and the support member 21. A coupling protrusion 111 formed at the tip end of the shaft 11 is formed at the rear end of the rotation shaft 25 An engaging groove can be formed.

The mobile unit 22 includes a moving body 221 moving along both ends of the base 11, a first handle 222 mounted on one side of the moving body 221, And a rotary gear 223 which is installed to engage with the rack 113 and moves by the rotation of the first handle 221 to move the moving body 221.

A first handle 222, a rotary gear 223 and a fixed unit 23 may be installed on one side of the moving body 221 have.

The fixed unit 23 includes a rotation lever 231 rotatably installed at one side of the moving body 221 and a rotation lever 231 provided at an inner end of the rotation lever 231 and rotated by the rotation lever 231, And a fixing member fixed to the lower surface.

The support unit 24 includes a support block 241 provided on the upper surface of the moving body 21 and a coupling shaft 242 provided on the front surface of the support block 241 and engaged with the rear end of the shaft 11 .

The support block 24 may be provided with a speed reducer that transmits the rotation force transmitted from the horizontal adjustment portion 60 to the coupling shaft 242 in accordance with a predetermined reduction ratio.

The horizontal adjustment section 60 functions to rotate the shaft so as to maintain the torque arm 31 in a horizontal state in order to improve the accuracy of the torque value measured by the torsion meter 50. [

The leveling unit 60 includes a leveling unit 61 installed on the torque arm 31 to check the horizontal state of the torque arm 31, an adjusting block 62 connected to one side of the supporting block 241, A second handle 63 rotatably installed at one side of the adjustment block 62 and a second handle 63 installed inside the adjustment block 62 and connected to the inner end of the second handle 63 to rotate the second handle 63, To the speed reducer.

The load adjusting unit 30 includes a torque arm 31 and a torque arm 31 which are coupled to the rotary shaft 25 of the shaft mounting unit 20 and rotate about the rotary shaft 25 by rotation of the rotary shaft 25, And a weight 32 installed at one end.

The torque arm 31 is provided with a predetermined length, for example, a length of about 100 cm, and a balance can be additionally provided at the other end of the torque arm 31, for example, at the left end.

The weight 32 may be installed by sequentially increasing the number of the torque arm 31 at one end, for example, at the right end thereof, in order to gradually increase the load acting on the shaft 11. [

Here, the weight 32 may be provided by increasing the number of the weights one by one by providing a plurality of standard weights of a predetermined weight, for example, about 10 kg.

3, the RPM reference unit 60 is provided with a waveform generator and can generate a waveform signal having a frequency corresponding to the measured value of the maximum number of revolutions of the shaft occurring when the engine of the ship is driven.

The telemetry module 80 may include an antenna 81 for receiving the sensing signal of the strain gage 40 and transmitting it to the torsion meter 50 in a wireless communication manner.

Thus, the torsion meter 50 receives the signal of the waveform having the frequency generated by the RPM reference unit 60 and the sensing signal of the strain gauge 40, measures the torque and the horsepower, Can be displayed as a digital indication and an analog indication.

Table 1 shows the standard values and torque measurement values and error tables measured on the torsion meter.

Table 3 shows the torque measurement value, the standard value, and the error of the two values measured with the three torsion meters as Experimental Examples 1 to 3, respectively.

Thus, the present invention can precisely calibrate the torsion meter by applying a load to the actual axis and comparing the torque value measured at the torsion meter with a standard value.

On the other hand, the standard strain for each number of weights using strain gauges can be calculated by the following equation (1).

Where 8 and 100 are constants, g is gravitational acceleration, T is torque arm length, w is weight, G is shear stiffness coefficient of the shaft, D is the shaft diameter.

For example, when the length of the torque arm is 101.62 cm, the weight of the weight is 10.2 kg, and the diameter of the shaft is 5 cm, substituting each value into Equation 1 yields a standard strain of about 25.2 탆 / N Can be calculated.

Next, a torsion meter calibration method according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

FIG. 7 is a flowchart illustrating steps of a torsion meter calibration method according to a preferred embodiment of the present invention.

First, the operator places the shaft 11 horizontally between the support member 21 of the shaft mounting portion 20 and the support unit 24, and uses both ends of the shaft 11 by using the movement unit 22 And is fixedly coupled to the rotary shaft 25 and the coupling shaft 241.

Then, the operator rotates the rotation lever 231 of the fixed unit 23 to fix the moving body 221 of the movable unit 22. [

In step S10 of FIG. 7, the operator installs one weight 32 at one end of the torque arm 31 of the torsion meter calibrating apparatus 10.

In order to increase the accuracy of the measurement value measured by the torsion meter 50, the second handle 63 of the horizontal adjustment unit 60 is rotated to adjust the torque arm 31 to be in a horizontal state (S12).

At this time, the operator can easily confirm whether the torque arm 31 is in an accurate horizontal state by using the leveling unit 61 provided on the torque arm 31. [

The speed reducer provided inside the horizontal adjuster 60 decelerates the rotational force of the second handle 63 and transmits the torque to the engaging shaft 242 coupled to the rear end of the shaft 11 to rotate the torque arm 31 So that the torque arm 31 can be accurately adjusted to a horizontal state.

When the torque arm 31 is in a horizontal state through the above process, the operator can lock the shaft 11 and the torque arm 31 to prevent rotation using the locking unit or the locking member.

The strain gage 40 installed on the outer circumferential surface of the shaft 11 in step S14 senses a torsional stress acting on the actual axis 11 by the weight 32 and the detection signal of the strain gage 40 is transmitted to the terminal 41 And the telemetry module 40 to the torsion meter 50 in a wireless communication manner.

In step S16, the torsion meter 50 displays a measured value and a standard value of the measured torque using the received sensing signal on the screen of the display panel, and the operator compares the measured value with the standard value to calculate an error (S18).

In step S20, the weight 32 is set up to a maximum weight to be measured, for example, 100 kg to check whether the measurement is completed.

If it is determined in step S20 that the maximum weight measurement is not completed, the operator additionally installs one weight 32 (S22) and repeats steps S12 to S20 until the maximum weight measurement is completed.

On the other hand, when the measurement is completed up to the maximum weight as a result of the inspection in step S20, the RPM reference unit 60 generates a signal of a waveform having a frequency corresponding to the measured value of the maximum number of revolutions of the shaft, And inputs it to the torsion meter 50 (S24).

Then, in step S26, the torsion meter 50 receives the signal of the waveform having the frequency generated by the RPM reference unit 60 and the sensing signal of the strain gauge 40, measures the torque, the horsepower and the RPM, And horsepower value and RPM value are displayed on the display panel as a digital indication or an analog indication.

In step S28, the operator calibrates the torsion meter 50 using the displayed result.

According to the present invention, a load is applied to a shaft provided in a horizontal state by using a standard weight, the actual torsional stress acting on the shaft is sensed, the measured torque value is compared with a standard torque value, Can be precisely corrected.

In the present embodiment, it has been described that the operator performs the calibration operation of the torsion meter 50 by manually operating the shaft mounting portion 20, the load adjusting portion 30, and the horizontal adjusting portion 60. However, But the present invention is not limited thereto.

That is, the present invention applies a driving motor and a sensing sensor to the moving unit 22 and the fixed unit 23, the load adjusting unit 30, and the horizontal adjusting unit 60 of the shaft mounting unit 20, A control unit for controlling the driving of each driving motor may be provided in accordance with the detection signal to automatically perform the torsion meter calibration operation.

Although the invention made by the present inventors has been described concretely with the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

The present invention is applied to a technique of precisely calibrating a torsion meter by applying a load using a weight to a shaft, detecting actual torsional stress acting on the shaft, and comparing the measured torque value with a standard torque value.

10: Torsion meter calibration device 11: Base
111: engaging protrusion 112: insertion groove
113: rack 20:
21: support member 22: mobile unit
221: moving body 222: first handle
223: rotary gear 23: fixed unit
231: rotation lever 24: support unit
241: Support block 242:
25: rotating shaft 30: load adjusting section
31: Torque arm 32: Weight
40: strain gauge 41: terminal
50: Torsion meter 60:
61: Level 62: Adjustment block
63: second handle 70: RPM reference
80: Telemetry module 81: Antenna

Claims (13)

A load acting on a shaft provided in a horizontal state is applied by using a standard weight, and a torsional stress acting on a strain gauge installed on the shaft is sensed to measure a torque value measured by the torsion meter, a length of a torque arm connected to the shaft, Wherein the torsion meter is calibrated by comparing a standard torque value calculated using a weight of a standard weight provided on the arm. The method according to claim 1,
A shaft mounting portion on which the shaft is mounted in a horizontal state,
A load adjusting unit for adjusting a load acting on the shaft by using a weight,
A strain gauge mounted on the shaft and measuring a torsional stress acting on the shaft, and
And a torsion meter for measuring torque and horsepower using the sensing signal output from the strain gauge and displaying the measured torque value and horsepower value. 3. The method of claim 2,
A horizontal adjustment unit for adjusting a rotation angle of the torque arm so that the shaft maintains a horizontal state,
An RPM reference device for inputting the RPM according to the specifications of the engine and the shaft to the torsion meter, and
And a telemetry module for transmitting the detection signal output from the strain gage to the torsion meter. 4. The apparatus according to claim 2 or 3, wherein the shaft mounting portion
A support member provided on the base and rotatably supporting the torque arm,
A moving unit slidably movable along the base,
A fixed unit for fixing the movable unit between the support member and the movable unit so as to prevent movement of the movable unit in a state where the shaft is horizontally installed;
And a support unit installed in the mobile unit and supporting a rear end of the shaft. 5. The method of claim 4,
The axis is manufactured by reducing the actual axis to a preset ratio,
A coupling protrusion and an insertion groove are formed at the distal end and the rear end of the shaft so as to be coupled to the support member and the support unit, respectively,
Wherein the support member is provided with a rotation shaft passing through the torque arm and the support member,
Wherein a coupling groove is formed at a rear end portion of the rotation shaft, the coupling groove being formed at an end of the shaft. 6. The method of claim 5,
The mobile unit includes a movable body slidably moving along both ends of the base,
A first handle installed on one side of the moving body,
And a rotary gear installed to engage with a rack provided on one lower end of the base and rotated by rotation of the first handle to move the moving body,
The fixed unit includes a rotary lever rotatably installed on one side of the movable body
And a fixing member provided at an inner end of the rotation lever and fixed to the base by rotation of the rotation lever. The method according to claim 6,
The supporting unit includes a supporting block installed on an upper surface of the moving body,
An engagement shaft provided on the front surface of the support block and engaged with a rear end of the shaft,
And a decelerator that decelerates the rotational force transmitted from the horizontal adjusting unit according to a predetermined reduction ratio and transmits the decelerated rotational force to the coupling shaft. 5. The method of claim 4,
The torque arm is engaged with the rotation shaft of the shaft mounting portion and is rotated by rotation of the rotation shaft,
Wherein the weight is provided by sequentially increasing the number of the torque arms at one end of the torque arm so as to gradually increase the load acting on the shaft. The apparatus of claim 3, wherein the horizontal adjustment unit
The level arm provided on the torque arm,
An adjustment block connected to one side of the shaft mounting portion,
A second handle rotatably mounted on one side of the adjustment block,
And a transmission gear installed inside the adjustment block and transmitting a rotational force of the second handle to a support unit of the shaft mounting portion to rotate the shaft so as to keep the torque arm in a horizontal state. The method of claim 3,
And a control unit for controlling driving of a driving motor provided in each of the apparatuses according to a detection signal of a detection sensor installed in each of a moving unit, a fixed unit, a load adjusting unit, and a horizontal adjusting unit of the shaft mounting unit, Characterized in that the torsion meter calibration device is automated. (a) installing a weight on a torque arm connected to a shaft installed horizontally,
(b) sensing an actual torsional stress acting on the shaft using a strain gauge installed on the shaft,
(c) measuring the torque using the sensing signal of the step (b) in the torsion meter and displaying the measured value; and
(d) comparing the standard value of the torque calculated using the length of the torque arm and the weight of the weight with the measured value measured in the step (c), and calibrating the torsion meter Calibration method. 12. The method of claim 11,
(e) checking whether the weight of the weight installed on the torque arm is a predetermined maximum weight after performing the step (c), and if the weight is not reached to the maximum weight, adding one weight Further comprising:
Wherein the steps (b), (c), and (e) are repeated until the weight of the weight reaches the maximum weight. 13. The method of claim 11 or 12, wherein step (d)
(d1) generating a signal of a waveform having a frequency corresponding to a measurement value obtained by measuring a maximum rotation number of the shaft using an RPM reference and inputting the signal to the torsion meter,
(d2) measuring horsepower and RPM with torque using the signal input from the RPM reference unit in the torsion meter, displaying the measured torque value, horsepower value and RPM value on a display panel, and
(d3) calibrating the torsion meter using the value displayed in the torsion meter.

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