CN116136438A

CN116136438A - Torque measuring method suitable for transmission equipment

Info

Publication number: CN116136438A
Application number: CN202111362529.4A
Authority: CN
Inventors: 王静; 孙明波; 甘林; 邓若松
Original assignee: XI'AN NUCLEAR EQUIPMENT CO Ltd
Current assignee: XI'AN NUCLEAR EQUIPMENT CO Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-05-19
Anticipated expiration: 2041-11-17
Also published as: CN116136438B

Abstract

The invention belongs to a measuring method, in particular to a torque measuring method suitable for transmission equipment. A torque measurement method suitable for transmission equipment, which includes the following steps, the first step is system installation; the second step is system debugging; the third step is real-time measurement; the fourth step is calculation and output of results. The notable effect of the invention is that the measured strain data graph conforms to the motion law of the equipment, and the maximum value is close to the estimated value. Finally, all the measured data were sorted into test records, and the test report of the data records has been approved by the Design Institute. The measured data can be combined with various parameters of the overturn coupling to study the actual working tolerance and service life of the overturn shaft, and further verify the reliability of the transmission structure design.

Description

Torque measuring method suitable for transmission equipment

Technical Field

The invention belongs to a measuring method, and particularly relates to a torque measuring method suitable for transmission equipment.

Background

The requirements of a certain dumping device on smoothness of driving operation, accuracy of centering and positioning of a large hanging basket, reliability of clamping, overturning and oscillating actions and the like are very strict. In order to verify the reliability of the transmission structure design of the equipment, the torque born by the turnover shaft coupling in the equipment under different using conditions (turnover, clamping and oscillation) is measured. The special equipment is provided with a dynamometer, a torque sensor, a pressure sensor and the like through knowing that the related industry has some experience on measuring torque. However, the torque borne by the coupler under the actual working condition is complex, and meanwhile, the installation space of the sensor, the actual working condition of equipment and the economical efficiency are considered, so that various special equipment is not suitable. Through analysis of the structural form and stress process of the equipment, the maximum value of dynamic strain born by the tested object is estimated, and the material (stainless steel) is combined, and the stress is torsion. It is therefore necessary to study a suitable torque measurement method.

Disclosure of Invention

The invention aims at the defects of the prior art and provides a torque measurement method suitable for transmission equipment.

The invention is realized in the following way: a torque measurement method suitable for use in a transmission device, comprising the steps of,

firstly, installing a system;

secondly, debugging the system;

thirdly, measuring in real time;

and step four, calculating and outputting a result.

A method of torque measurement suitable for use in a transmission as described above, wherein said first step comprises,

labeling specific positions, wherein the specific positions are the parts with the strongest stress of the universal coupling of the turning shaft in the turning and oscillating process of the material pouring barrel.

The first step further comprises polishing and cleaning the specific position, requiring smooth and clean surface treatment, pasting the strain gauge by taking invisible foreign matters as a standard, and pressurizing and solidifying the heavy object for 4 hours.

The first step of the torque measuring method suitable for the transmission equipment further comprises the following steps of welding the strain gauge with a wire and a connecting terminal for a three-core shielded cable for measurement after the strain gauge is installed, connecting a prefabricated joint at the other end of the measurement cable to four channel joints of a data acquisition unit, and connecting a computer with the data acquisition unit by using a network cable to form a torque measuring system.

The second step comprises starting a data acquisition device to carry out system debugging after the installation of each part of a measuring system is completed, opening installed data acquisition analysis software, setting and storing variable characteristics of each channel, calling out real-time recorded values of the measuring channels, selecting a waveform chart and a data table mode to output and display, gradually increasing the applied pressure on a strain gauge during debugging, observing whether the data change condition of the channel is consistent with the pressure trend, if so, executing the subsequent steps, and if not, correcting the result until the observed data is consistent with the actual data.

The third step includes starting a control system of a dumping device, carrying out overturn-oscillation-reset by operating equipment load through an operation desk, carrying out real-time measurement for a period of time in each action mode, uploading data once per second by the instrument, and independently storing measurement records of each action.

A method of torque measurement suitable for use in a transmission as described above, wherein the third step further comprises the step of, wherein the period of time is between 5 and 10 minutes.

The third step further comprises the following steps of carrying out data extraction and integration on measured data after all action measurement is completed, and calculating the strain gamma.

A method of torque measurement suitable for use in a transmission as described above, wherein said fourth step comprises,

a) Calculating the torque force born by the coupler by substituting the formula 1;

equation 1: τ=g×γ

Wherein: τ is the torsion, G is the shear modulus, and γ is the shear strain. Through examination: the coupler is made of 304 stainless steel, and the G shear modulus is 79.38GPa.

b) After the tau torque value is calculated, the torque M born by the universal coupling under the working condition is calculated according to a formula 2;

equation 2: m=τxw

c) Wherein: w is the torsional section coefficient, w= 0.1964 × (D4-D4)/D

D is

d is->

The dimension is found out according to the drawing of the coupler,

equation 3: m=gxγxw≡79.38xγx1.55x105, the minimum, maximum and effective values of the measured strain values. And the torque is calculated by substituting the formula 3, the gamma strain value unit is mu m/m, the calculation is converted into m, and the pressure unit is converted into Pa.

The invention has the remarkable effects that: the measured strain data graph accords with the motion rule of the equipment, and the maximum value is close to the estimated value. And finally, all the measured data are arranged into test records, and the test report of the data records is approved by a design institute. The measured data can be combined with various parameters of the turnover shaft coupling to study the actual working tolerance and the working life of the turnover shaft, and the reliability of the transmission structure design is further verified.

Drawings

FIG. 1 is a schematic diagram of a torque measurement system design flow.

In the figure: 1.

Detailed Description

The present invention will be further described below.

And firstly, analyzing the most effective monitoring position according to the equipment drawing and the actual working condition, and marking. The position is a plurality of places with the strongest stress of the universal coupling of the turning shaft in the turning and oscillating process of the material pouring barrel. Polishing and cleaning the positions, requiring smooth and clean surface treatment, sticking strain gauges by special glue, and pressurizing and solidifying the heavy objects for 4 hours. After the strain gauge is installed, the strain gauge is welded together with a wire and a connecting terminal for a three-core shielded cable for measurement, and finally, a prefabricated joint at the other end of the measurement cable is connected to four channel joints of a data acquisition device. And finally, connecting the computer with a data acquisition unit by using a network cable to form a torque measurement system.

And secondly, after the installation of each part of the measuring system is completed, starting a data acquisition device to carry out system debugging, opening installed data acquisition analysis software, setting and storing variable characteristics of each channel, calling out real-time recorded values of the measuring channels, and selecting a waveform chart and a data table mode for output display. When in debugging, the pressure can be gradually increased on the adhered strain gauge, and whether the data change condition of the channel is consistent with the pressure trend is observed.

And thirdly, starting a control system of a certain dumping device, carrying out overturning, oscillating and resetting through operating equipment load of an operation console, measuring each action mode in real time for a period of time, uploading data every second by the instrument, and independently storing measurement records of each action. After all the actions are measured, data extraction and integration are carried out on the measured data, a plurality of groups of data which can truly reflect the actual working conditions are selected, data analysis is carried out by using software, and finally the maximum value, the minimum value and the effective value of each channel of each working condition are extracted according to the requirements. For the next torque calculation. The processed data value is the strain gamma generated by the universal coupler under the working condition; the step of calculating the strain gamma may be achieved by prior art techniques.

equation 1: τ=g×γ

d) After the tau torque value is calculated, the torque M born by the universal coupling under the working condition is calculated according to a formula 2;

equation 2: m=τxw

e) Wherein: w is the torsional section coefficient, w= 0.1964 × (D4-D4)/D

D is

d is->

(the dimension is found according to the drawing of the coupling)

f) Equation 3: m=gxγxw≡79.38xγx1.55x105, the minimum, maximum and effective values of the measured strain values. And the torque is calculated by substituting the formula 3, the gamma strain value unit is mu m/m, the calculation is converted into m, and the pressure unit is converted into Pa. And finally, finishing the torque test measurement value of the turnover coupling.

Claims

1. A torque measurement method applicable to transmission equipment, characterized in that: comprising the following steps,

The first step, system installation;

The second step is system debugging;

The third step, real-time measurement;

The fourth step is to calculate and output the result.

2. A kind of torque measurement method suitable for transmission equipment as claimed in claim 1, characterized in that: said first step comprises the following content,

Mark the specific positions, which are the places where the universal coupling of the turning shaft bears the strongest force during the turning and oscillating process of the dumping bucket.

3. A torque measurement method suitable for transmission equipment as claimed in claim 2, characterized in that: the first step also includes the following content, grinding and cleaning the specific position, requiring smooth surface treatment , Clean, with the invisible foreign matter as the standard, the strain gauge is pasted, and the heavy object is pressurized for 4 hours to cure.

4. A kind of torque measurement method suitable for transmission equipment as claimed in claim 3, characterized in that: the first step also includes the following content, after the strain gauge is installed, put the strain gauge with its own wire and The three-core shielded cables for measurement are welded together with terminal blocks, and finally the prefabricated connector at the other end of the measurement cable is connected to the four channel connectors of the data collector, and finally the computer and the data collector are connected with a network cable to form a torque measurement system.

5. A torque measurement method suitable for transmission equipment as claimed in claim 4, characterized in that: the second step includes the following content, after the installation of each part of the measurement system is completed, start the data collector to carry out the system Debugging, open the installed data acquisition and analysis software, set and save the variable characteristics of each channel, call out the real-time recorded value of the measurement channel, and select the waveform diagram and data table mode for output display. Increase the pressure and observe whether the data change of the channel is consistent with the pressure trend. If it is consistent, perform the next steps. If it is inconsistent, correct the result until the observed data is consistent with the actual data.

6. A torque measurement method suitable for transmission equipment as claimed in claim 5, characterized in that: said third step includes the following content, starting a certain dumping device control system, and operating the equipment through the console Perform flip-oscillation-reset, and perform real-time measurement for a period of time in each action mode. The instrument uploads data once per second, and the measurement records of each action need to be saved separately.

7. A torque measurement method suitable for transmission equipment as claimed in claim 6, characterized in that: said third step further comprises the following content, said period of time refers to 5-10 minutes.

8. A torque measurement method applicable to transmission equipment as claimed in claim 7, characterized in that: said third step also includes the following content, after all motion measurements are completed, data extraction is performed on the measured data Integrating, the strain γ is calculated.

9. A kind of torque measurement method suitable for transmission equipment as claimed in claim 8, characterized in that: said fourth step comprises the following content,

a) Calculate the torque on the coupling by substituting it into formula 1;

Formula 1: τ=G×γ

Where: τ is the torque, G is the shear modulus, and γ is the shear strain. After investigation: the material of the coupling is 304 stainless steel, and the G shear modulus is 79.38GPa.

b) After calculating the τ torque value, calculate the torque M that the universal coupling bears under this working condition according to formula 2;

Formula 2: M=τ×W

c) Where: W is the torsional section coefficient, W=0.1964×(D4-d4)/D

D is

d for />

The dimension is found from the coupling drawing,

Formula 3: M=G×γ×W≈79.38×γ×1.55×105, the minimum, maximum and effective value of the measured strain value. Substitute into formula 3 to calculate the torque, and the unit of γ strain value is μm/m, which needs to be converted to m when calculating, and the pressure unit to be converted to Pa.