CN215910045U

CN215910045U - Comprehensive wrench verification platform

Info

Publication number: CN215910045U
Application number: CN202121885219.6U
Authority: CN
Inventors: 宋立伟; 刘振行; 李明; 宋雅雯; 安祥波; 孔令峰; 包囡囡
Original assignee: Shandong Delong Electronic Technology Co ltd
Current assignee: Shandong Delong Electronic Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-25
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a comprehensive wrench verification platform, which relates to the technical field of wrench quality inspection and is characterized in that a positioning assembly, an output shaft, a torque sensor, a simulation load system and a data processing system are arranged on the detection platform, the torque sensor is wound on the top of the output shaft, the positioning assembly is used for mounting a wrench to be detected and enabling the wrench to be detected to be matched with the top of the output shaft, and the output shaft is used for being matched with the top of the output shaft and simulating a track bolt; the analog load system is used for producing and predetermines torsion and gives and wait to detect the spanner, and torque sensor is including setting up foil gage and the data acquisition module on the output shaft, and the foil gage is used for waiting to detect the spanner and twists reverse the output shaft after and obtain the signal of meeting an emergency, and the data acquisition module is used for meeting an emergency the signal and passing through enlarging, filtering and digital-to-analog conversion in proper order and converting into and detect the torque value. The utility model has the advantages of accurate verification, good verification effect and multi-angle judgment and comparison.

Description

Comprehensive wrench verification platform

Technical Field

The utility model relates to the technical field of wrench quality inspection, in particular to a comprehensive wrench verification platform.

Background

Along with the continuous development of the railway heavy load acceleration, various manual and mechanical wrenches are popularized and used in a large number by the engineering department for meeting the requirements of the engineering department, and the stability and the operation efficiency of the track line are effectively improved by using the tools. The torque machines and tools are frequently replaced, and production units only pay attention to production machine tool products and cannot form matching with the calibrating apparatus, so that the torque machines and tools are subjected to failure detection and missing detection. For this reason, the road bureau leader also correspondingly equips the road bureau metering with a torque detection instrument, but only can solve the problem of a manual torque wrench, the project is single, and the on-site inspection is very inconvenient. The quality and stability of the maintenance of the track line are also damaged due to the fact that the torque wrench is subjected to the missing detection and the missing detection. The nonstandard machines and tools can cause the quality of field operation to lose the standard and the quality of standard operation to lose the standard, thereby causing the torque of the bolt to be inaccurate, possibly causing the track connecting parts to be loosened and fall off, causing great harm to the train running at high speed and causing serious driving accidents in serious cases. An inspection vehicle with a high-power camera is developed for the huge capital of the ministry of railways, and is specially used for inspecting the poor equipment states of looseness, falling-off and the like of track connecting parts.

In summary, it is necessary to develop a device for comprehensively calibrating the performance of a torque wrench, which is a supporting device for ensuring the quality and safety of a line.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a comprehensive wrench verification platform.

A comprehensive wrench verification platform comprises a detection platform, and is characterized in that a positioning assembly, an output shaft, a torque sensor, a simulated load system and a data processing system are arranged on the detection platform, and the torque sensor is wound on the top of the output shaft; the positioning assembly is used for mounting a wrench to be detected and enabling the wrench to be detected to be matched with the top of the output shaft, and the output shaft is used for being matched with the top of the output shaft and simulating a track bolt; the torque sensor comprises a strain gauge and a data acquisition module, the strain gauge is arranged on the output shaft and is used for acquiring a strain signal after the output shaft is twisted by the wrench to be detected, and the data acquisition module is used for converting the strain signal into a detection torque value through amplification, filtering and digital-analog conversion in sequence; the data processing system is used for displaying the preset torque, the detection torque value and the rated torque value of the wrench to be detected, and is also used for comparing and processing the preset torque, the detection torque value and the rated torque value of the wrench to be detected and judging whether the wrench to be detected is qualified or not. The whole comprehensive verification platform mainly aims at the torque wrench to perform determination; torque sensor adopts rotary-type torque sensor, be the sensor that is used for measuring the moment of torsion parameter specially, this torque sensor adopts the electric measurement technique of strain bridge, provide the power with a set of ring transformer non-contact, carried out non-contact transmission signal with little consumption signal coupler replacement ring transformer, overcome the mutual interference of higher harmonic self-interference and energy ring transformer to signal ring transformer that inductive coupling signal brought effectively, simultaneously will export sharp pulse and become equal square wave signal, consequently this torque sensor can be long-time, high rotational speed operation.

Preferably, the simulation load system comprises a hydraulic assembly and a power simulation assembly, the hydraulic assembly is used for generating preset pressure through preset hydraulic pressure, and the power simulation assembly is used for converting the preset pressure into preset torque and applying the preset torque to the wrench to be detected. Preferably, the hydraulic assembly and the power simulation assembly can utilize a hydraulic brake principle, and the hydraulic assembly generates pressures with different sizes under different hydraulic pressures, so that the power simulation assembly generates friction with different sizes to simulate a load loading process.

Preferably, the data acquisition module comprises a bridge module, an amplification module, a filtering module and an A/D conversion module. The bridge module adopts a full-bridge circuit, so that the accurate pasting position of the strain gauge and the characteristic matching of the strain gauge can be ensured, the device can amplify the voltage signal output, improve the measurement sensitivity and achieve the purposes of temperature compensation and bending stress elimination; the strain gauge on the output shaft converts the strain of non-electricity into voltage signals, but the electricity signals are generally very small, the dynamic range of the signals is large, and the signals often have large common-mode interference components, therefore, an amplifier is required to amplify the signals, and in order to ensure the requirement of measurement precision, an amplifying circuit has the following performances of (i) enough amplification factor, (ii) high input impedance, low output impedance, (iii) high common-mode rejection capability, (iv) low temperature drift, low noise, low offset voltage and current; after an output shaft is twisted by a mechanical wrench to generate weak signals, the interference signals are higher than the cut-off frequency of the weak signals, so that high-frequency interference signals in the input signals need to be removed or greatly attenuated, useful low-frequency signals are fully reserved, and a low-pass filter is selected; and finally, the A/D conversion module adopts a double integral A/D converter, has high precision and strong anti-interference performance and is used in the occasions with high precision requirement and low speed requirement.

The utility model has the beneficial effects that:

during the whole operation of the verification platform, the automatic verification is completed on the detection platform in the whole process, firstly, a wrench to be detected is placed on the positioning component, and a wrench head of the wrench to be detected is clamped into the top of the output shaft, so that the wrench to be detected can drive the output shaft to rotate to a certain degree, further, a controllable and randomly adjusted preset torque can be generated through the simulation load system and is given to the wrench to be detected, and the external force parameter of the simulation environment of the wrench to be detected is ensured to be completely recorded, so that the tightening process of the bolt is scientifically and accurately simulated, further, after the wrench to be detected twists the output shaft under the preset torque, a strain gauge adhered to the output shaft collects a strain signal, and the strain signal is amplified, filtered and subjected to digital-analog conversion along with the data collection module, so that the detection torque value can be accurately and quickly obtained, and most importantly, data processing system not only can compare the judgement to the rated torque value that detects the torque value and wait to detect the spanner this moment, just also the error of waiting to detect spanner theoretical moment of torsion and actual moment of torsion is examined in the research, can also compare the judgement to predetermine torsion and detection torque value, just also the influence of the actual moment of torsion that the spanner is treated to external force in the research certain limit, thereby it is qualified to judge to detect the spanner in two survey directions, further improve examination degree of accuracy and examination scientificity, simultaneously can also follow the quality problems of waiting to detect the spanner in the research of a plurality of directions.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic composition diagram of the present invention;

FIG. 2 is a structural elevation view of the present invention;

FIG. 3 is a schematic structural view of a portion of the structure of the present invention;

FIG. 4 is a schematic diagram of the output shaft and torque sensor of the present invention;

FIG. 5 is a schematic diagram of a portion of the structure of the present invention;

FIG. 6 is a schematic diagram of the data acquisition module according to the present invention.

Reference numerals:

the method comprises the following steps of 1-detecting a platform, 2-positioning components, 3-output shafts, 4-torque sensors, 41-strain gauges, 42-data acquisition modules, 421-bridge modules, 422-amplification modules, 423-filtering modules, 424-A/D conversion modules, 5-analog load systems, 51-hydraulic components, 52-power analog components, 6-data processing systems, 7-preset torque and 8-detected torque values.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 6, a comprehensive wrench verification platform comprises a detection platform 1, and is characterized in that the detection platform 1 is provided with a positioning component 2, an output shaft 3, a torque sensor 4, an analog load system 5 and a data processing system 6, and the top of the output shaft 3 is wound with the torque sensor 4; the positioning assembly 2 is used for mounting a wrench to be detected and enabling the wrench to be detected to be matched with the top of the output shaft 3, and the output shaft 3 is used for being matched with the top of the output shaft 3 and simulating a track bolt; the analog load system 5 is used for generating a preset torque 7 to be given to the wrench to be detected, the torque sensor 4 comprises a strain gauge 41 and a data acquisition module 42 which are arranged on the output shaft 3, the strain gauge 41 is used for acquiring a strain signal after the wrench to be detected twists the output shaft 3, and the data acquisition module 42 is used for converting the strain signal into a detection torque value 8 through amplification, filtering and digital-analog conversion in sequence; the data processing system 6 is used for displaying the preset torque 7, the detection torque value 8 and the rated torque value of the wrench to be detected, and is also used for comparing and processing the preset torque 7, the detection torque value 8 and the rated torque value of the wrench to be detected so as to judge whether the wrench to be detected is qualified.

In the present embodiment, it should be noted that the entire integrated verification station mainly measures the torque wrench; torque sensor 4 adopts rotary-type torque sensor 4, be the sensor that is used for measuring the moment of torsion parameter specially, this torque sensor 4 adopts the strain bridge electricity to survey the technique, provide the power with a set of ring transformer non-contact, carried out non-contact transmission signal with little consumption signal coupler replacement ring transformer, overcome the mutual interference of higher harmonic self-interference and energy ring transformer that inductive coupling signal brought to signal ring transformer effectively, simultaneously become equal square wave signal with the sharp pulse of output, therefore this torque sensor 4 can be long-time, high rotational speed operation.

Particularly, when the whole verification platform works, automatic verification is completed on the detection platform 1 in the whole process, firstly, a wrench to be detected is placed on the positioning component 2, a wrench head of the wrench to be detected is clamped into the top of the output shaft 3, so that the wrench to be detected can drive the output shaft 3 to rotate to a certain degree, further, a controllable and randomly adjusted preset torque 7 can be generated through the simulation load system 5 and is given to the wrench to be detected, external force parameters of a simulation environment of the wrench to be detected are completely recorded, therefore, the screwing process of the bolt is scientifically and accurately simulated, further, after the wrench to be detected twists the output shaft 3 under the preset torque 7, a strain sheet 41 adhered to the output shaft 3 collects a strain signal, and the strain signal is amplified, filtered and subjected to digital-analog conversion along with the data collection module 42, so that a detection torque value 8 can be accurately and quickly obtained, most importantly, data processing system 6 not only can compare the judgement to the rated torque value that detects torque value 8 and wait to detect the spanner this moment, also be exactly the error of waiting to detect the theoretical moment of torsion of spanner and actual moment of torsion, can also compare the judgement to preset torque 7 and detect torque value 8, also be exactly the influence that the actual moment of torsion of waiting to detect the spanner is treated to external force in studying the certain limit, thereby judge in two survey directions and wait to detect whether qualified the spanner, further improve examination accuracy and examination scientificity, can also study the quality problems who waits to detect the spanner from a plurality of directions simultaneously.

Specifically, the simulation load system 5 includes a hydraulic assembly 51 and a power simulation assembly 52, the hydraulic assembly 51 is configured to generate a preset pressure by a preset hydraulic pressure, and the power simulation assembly 52 is configured to convert the preset pressure into a preset torque 7 and apply the preset torque to the wrench to be detected.

In this embodiment, it should be noted that, preferably, the hydraulic module 51 and the power simulation module 52 may utilize the hydraulic braking principle, and the hydraulic module 51 generates pressures with different magnitudes under different hydraulic pressures, so that the power simulation module 52 generates friction forces with different magnitudes, thereby simulating the load loading process.

Specifically, the data acquisition module 42 includes a bridge module 421, an amplifying module 422, a filtering module 423, and an a/D conversion module 424.

In this embodiment, it should be noted that the bridge module 421 adopts a full-bridge circuit, which can ensure that the bonding position of the strain gauge 41 is accurate and the characteristics of the strain gauge 41 are matched, so that the device can amplify the voltage signal output, improve the measurement sensitivity, and achieve the purposes of temperature compensation and eliminating the bending stress; the strain gauge 41 on the output shaft 3 converts the strain of non-electricity into voltage signals, but the electricity signals are generally very small, the dynamic range of the signals is large, and the signals often have large common-mode interference components, therefore, an amplifier is required to amplify the signals, and in order to ensure the requirement of measurement accuracy, an amplifying circuit has the following performances of (i) enough amplification factor, (ii) high input impedance, low output impedance, (iii) high common-mode rejection capability, and (iv) low temperature drift, low noise, low offset voltage and current; after the output shaft 3 is twisted by a mechanical wrench to generate weak signals, the interference signals are higher than the cut-off frequency of the weak signals, so that high-frequency interference signals in the input signals need to be removed or greatly attenuated, useful low-frequency signals are fully reserved, and a low-pass filter is selected; and finally, the A/D conversion module 424 adopts a double integral type A/D converter, has high precision and strong anti-interference performance and is used in the occasions with high precision requirement and low speed requirement.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A comprehensive wrench verification platform comprises a detection platform, and is characterized in that a positioning assembly, an output shaft, a torque sensor, a simulated load system and a data processing system are arranged on the detection platform, and the torque sensor is wound on the top of the output shaft; wherein,

the positioning assembly is used for mounting a wrench to be detected and enabling the wrench to be detected to be matched with the top of the output shaft, and the output shaft is used for being matched with the top of the output shaft and simulating a track bolt;

the torque sensor comprises a strain gauge and a data acquisition module, the strain gauge is arranged on the output shaft and is used for acquiring a strain signal after the output shaft is twisted by the wrench to be detected, and the data acquisition module is used for converting the strain signal into a detection torque value through amplification, filtering and digital-analog conversion in sequence;

the data processing system is used for displaying the preset torque, the detection torque value and the rated torque value of the wrench to be detected, and is also used for comparing and processing the preset torque, the detection torque value and the rated torque value of the wrench to be detected and judging whether the wrench to be detected is qualified or not.

2. The wrench integrated verification stand according to claim 1, wherein the simulation load system comprises a hydraulic assembly and a power simulation assembly, the hydraulic assembly is used for generating a preset pressure through a preset hydraulic pressure, and the power simulation assembly is used for converting the preset pressure into a preset torque and applying the preset torque to the wrench to be detected.

3. The wrench integrated certification platform according to claim 2, wherein the data acquisition module comprises a bridge module, an amplification module, a filtering module and an A/D conversion module.