CN208953170U - A kind of axis torch measuring system - Google Patents

Abstract

The utility model discloses a kind of axis torch measuring systems, it includes the first magnetic grid, second magnetic grid, first sensory package, second sensory package and processor, first magnetic grid and the second magnetic grid are arranged at intervals at the surface of axis to be measured, and it is respectively provided with the first seam and the second seam, first sensory package includes first detecting part of two radial directions along axis to be measured towards the first magnetic grid, second sensory package includes second detecting part of two radial directions along axis to be measured towards the second magnetic grid, two the first detecting parts and two the first detecting parts sense the first magnetic grid and the second magnetic grid rotated with axis to be measured respectively, and the first sensing signal and the second sensing signal are generated respectively, processor receives and processes the first sensing signal and the second sensing signal, to obtain the torque of axis to be measured.The axis torch measuring system of the utility model, is not only capable of measuring the torque of the axis to be measured of different-diameter, and high resolution, and the precision of measurement result is high.

Description

A kind of axis torch measuring system

Technical field

The utility model relates to axis torque measurement field more particularly to a kind of axis torch measuring systems.

Background technique

In machine driven system, torque is one of the most typically mechanical quantity for reflecting production equipment system performance, torque Measurement and analysis are also the normal operation for guaranteeing various production equipments and ancillary equipment, reduce energy consumption and improve efficiency important Means, therefore improve accuracy, the reliability of torque monitoring and the real-time of control and torque anomaly analysis of torque measurement It necessarily can be reduced the generation of accident, improve the utilization rate of production equipment.In other words, the on-line monitoring of torque is to non-plan repair Time reduction and the reduction of accident rate, analysis cause an accident or the efficiency of failure cause and production efficiency and economic benefit Raising suffer from important meaning.

With the development of progress and the production of science and technology, torque measurement techniques have more and more wide application prospect. Monitoring of the modern mechanical product all in the development to high-power, high speed, miniaturization, to various dynamic power machine operating statuses It is particularly important with fault identification forecast, especially large-scale, critical, without deposit mechanical equipment, such as heavy duty Ling-distance truck, powerful underwater structure, the main shaft on naval vessel etc..When control system corresponding frequencies and the intrinsic frequency of transmission shaft system When rate is close or equal, it will result in electromechanical lotus root and be in step with resonance, current oscillation will be serious to the operation of mechanical equipment generation It influences, and then is delayed production plan, cause damages.

For example, develop with ship to the direction of enlargement, high speed and automation, the rapidity of ship, efficiently Benefit, economy etc., it has also become the important indicator of shipbuilding, and as the important means for calculating transfer efficiency, the measurement of shaft power is Shipyard and shipowner check and accept the major parameter of new shipbuilding oceangoing ship.The condition of vessel motion is sufficiently complex, and ship-machine-paddle matching is to host Performance has very big influence, and when machine-paddle mismatches, host may be unable to reach its rated power, and ship, which cannot reach, to be set The speed of a ship or plane is counted, alternatively, host is more than rated power operation, causes host overload to use, service life greatly shortens.And the axis of ship Power and torch measuring system, it passes through the measurement of the shaft power to host under different operating conditions, it will be appreciated that and detect hull- Match condition between host-propeller three monitors the operating status of hull in real time, can also be to obsolete vessel ship-machine- Paddle working condition and failure make diagnosis.As one of most important performance parameter of marine main engine, shaft power generally by It connects measurement torque and revolving speed is calculated and obtained, and then output power is compared with oil consumption, to avoid excessively making for engine With in this way, ship can not only be made to keep or reasonably improve speed, moreover it is possible to save great amount of fuel oil, reduce carbon dioxide and nitrogen oxygen The discharge of compound.

With regard to the measurement of shaft power, development trend is, from static test to dynamic test development, from contact type measurement to non- Contact type measurement development, with going deep into for technical research, test macro is also all towards volume miniaturization, displaying digitized, system Intelligent, monitoring real time implementation direction is developed, meanwhile, the requirement to the precision of measurement, accuracy and resolution ratio is all with city Field demand constantly improves.

With current the most widely used Axis Power Measurement System " KONGSBERG shaft power instrumentSystem " It is the Axis Power Measurement System based on phase-difference type, this is for the photoelectric non-contact type rotation axis torch measuring system of representative System mainly uses optoelectronic switch sensor, including optoelectronic switch, photoelectric code disk, controller, computer and interlock circuit, coding Wheel is fixedly mounted on the rotating shaft, and the notch of optoelectronic switch faces code wheel, and is fixed on the edge of code wheel, works as code wheel When rotating with measured axis, the optical path between the photoelectric detector and light emitting diode of optoelectronic switch is periodically turned on or is closed It closing, optoelectronic switch exports the alternate pulse of synperiodic opening and closing, and the electric signal that controller transmits optoelectronic switch is handled, with True phase signal is obtained, and the phase signal is stored in data cell, is then transmitted to single-chip microcontroller, single-chip microcontroller The velocity amplitude of binding assay calculates the torque and shaft power of rotation axis, and then the numerical value in controller is carried out mathematics by computer Statistics, data analysis, and graphically show.

Currently, the axis torch measuring system based on photoelectric technology, since the accuracy of its measurement depends on to a certain extent The accurate installation of read head, therefore installation requirement when its use is high, setter needs to have enough experiences, and installation has comparable Difficulty, meanwhile, the performance in terms of resolution ratio and sensitivity is also gradually unable to satisfy actual requirement.

Utility model content

The embodiments of the present invention provides a kind of axis torch measuring system, to solve existing axis torch measuring system The problem that resolution ratio is low, sensitivity is low and installation difficulty is high.

In order to solve the above-mentioned technical problem, the utility model provides a kind of axis torch measuring system comprising the first magnetic grid, Second magnetic grid, the first sensory package, the second sensory package and processor, the first magnetic grid are arranged at intervals to be measured with the second magnetic grid On the surface of axis, and it is respectively provided with the first seam and the second seam, the first sensory package and the second sensory package are respectively provided with two A first detecting part and two the second detecting parts, two the first detecting part interval settings, and respectively along the radial direction of axis to be measured Direction generates the first sensing letter with the first magnetic grid that axis to be measured rotates towards the first magnetic grid, two the first detecting part sensings Number, two the second detecting part interval settings, and respectively along the radial direction of axis to be measured towards the second magnetic grid, two second are felt Survey portion sensing with the second magnetic grid that axis rotate to generate the second sensing signal, processor receive and process the first sensing signal and Second sensing signal, to obtain the torque of axis to be measured.

The spacing distance of an embodiment according to the present utility model, above-mentioned two first detecting part is greater than the first seam Width, the spacing distance of two the second detecting parts are greater than the width of the second seam.

An embodiment according to the present utility model, two above-mentioned first detecting parts are respectively provided with two the second detecting parts Magnetic head, magnetic head the first magnetic grid of direction of each first detecting part, the second magnetic grid of magnetic head of each second detecting part.

An embodiment according to the present utility model, air gap and the second sense between above-mentioned first detecting part and the first magnetic grid Air gap between survey portion and the second magnetic grid is between 0.5mm~1.5mm.

The thickness of an embodiment according to the present utility model, above-mentioned first magnetic grid and the second magnetic grid between 1.0mm~ Between 1.5mm.

An embodiment according to the present utility model, above-mentioned each first detecting part are respectively provided with each second detecting part MR sensor and two Hall sensors, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and the first detecting part MR sensor and two Hall sensors along the radial direction arrangement of axis to be measured and towards the first magnetic grid, each second sense The radial direction arrangement and the second magnetic grid of direction of the MR sensor in survey portion and two Hall sensors along axis to be measured, wherein the First analog signal caused by two Hall sensors of one sensory package by each first detecting part alternately receives two First sensing signal caused by the MR sensor of one of first detecting part, wherein the second sensory package is felt by each second Second analog signal caused by two Hall sensors in survey portion alternately receives the MR sensing of one of two second detecting parts Second sensing signal caused by device.

An embodiment according to the present utility model, two the first detecting parts that above-mentioned processor integration alternately receives First sensing signal caused by MR sensor is the first transducing signal, two second sensings that processor integration alternately receives Second sensing signal caused by the MR sensor in portion is the second transducing signal, and processor is passed according to the first transducing signal and second Sense signal obtains the torque of axis to be measured.

An embodiment according to the present utility model, Hall sensor and MR sensor in two above-mentioned first detecting parts The distance between be greater than the pole pitch of the first magnetic grid, between the Hall sensor and MR sensor in each second detecting part away from From the pole pitch for being greater than the second magnetic grid.

An embodiment according to the present utility model further includes display module, and processor is according to the first transducing signal and Two transducing signals obtain measurement result, and generate display signal according to measurement result, and transmission displays signal to display module, shows Show that module shows the torque of axis to be measured according to display signal.

An embodiment according to the present utility model, further includes magnetic grid protective layer, and magnetic grid protective layer is set to the first magnetic grid With the surface far from axis to be measured of the second magnetic grid.

In the embodiments of the present invention, the axis torch measuring system of the utility model will have the first seam The first magnetic grid be arranged at intervals at the surface of axis to be measured with the second magnetic grid with the second seam, axis to be measured is rotated and is driven First magnetic grid and the second magnetic grid, the first sensory package sense the first magnetic grid of rotation, and export the first sensing signal, together When the second sensory package the second magnetic grid of rotation is sensed, and export the second sensing signal, and then processor receives and locates The first sensing signal and the second sensing signal are managed, to obtain the torque of axis to be measured, in this way, can not only be to the to be measured of different-diameter It measures axis and carries out torque measurement, moreover it is possible to which the accuracy for improving torque measurement obtains the higher measurement result of reliability.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model Point, the schematic present embodiment and its explanation of the utility model are not constituted practical new to this for explaining the utility model The improper restriction of type.In the accompanying drawings:

Fig. 1 is the block diagram of the axis torch measuring system of the utility model；

Fig. 2 is the scheme of installation of the axis torch measuring system of the utility model；

Fig. 3 is the block diagram of the first sensory package of the axis torch measuring system of the utility model；

Fig. 4 is the signal that the first sensory package of the axis torch measuring system of the utility model senses the first magnetic grid Figure；

Fig. 5 is the enlarged drawing of the a-quadrant of Fig. 4.

Specific embodiment

Below in conjunction with the attached drawing in the utility model present embodiment, to the technology in the utility model present embodiment Scheme is clearly and completely described, it is clear that and described present embodiment is an embodiment of the utility model, without It is whole present embodiments.Based on the present embodiment in the utility model, those of ordinary skill in the art are not being made Every other present embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.

Fig. 1 and Fig. 2 are please referred to, is the block diagram and scheme of installation of the axis torch measuring system of the utility model respectively. As shown, the axis torch measuring system 1 that present embodiment provides comprising the first magnetic grid 10, the second magnetic grid 11, first sensing Component 12, the second sensory package 13 and processor 14, wherein the first magnetic grid 10 and the second magnetic grid 11 are arranged at intervals at axis 2 to be measured Surface, the first magnetic grid 10 and the second magnetic grid 11 are looped around axis 2 to be measured respectively, have first between the both ends of the first magnetic grid 10 Seam 101 has the second seam 111, the width root of the first seam 101 and the second seam 111 between the both ends of second magnetic grid 11 According to depending on the length of the circumference of axis 2 to be measured and the first magnetic grid 10 and the second magnetic grid 11, i.e. the first seam 101 and the second seam 111 width is that the circumference of axis 2 to be measured subtracts each other with the first magnetic grid 10 and the second magnetic grid 11 respectively.

There are two the first detecting parts 120 for first sensory package 12 tool, and two the first detecting parts 120 are along axis 2 to be measured The setting of radial direction interval, and it senses direction respectively along radial direction the first magnetic grid 10 of direction of axis 2 to be measured.Second passes The tool of component 13 is felt there are two the second detecting part 130, and two the second detecting parts 130 are set along the radial direction interval of axis 2 to be measured It sets, and it senses direction respectively along radial direction the second magnetic grid 11 of direction of axis 2 to be measured.First sensory package 12 and second Processor 14 is electrically connected in sensory package 13.

When axis 2 to be measured rotation, the first magnetic grid 10 and the second magnetic grid 11 is driven to rotate, the two of the first sensory package 12 A first detecting part 120 senses the first magnetic grid 1 of rotation respectively to generate the first sensing signal.Meanwhile second sensory package 13 Two the second detecting parts 130 sense the second magnetic grid 11 of rotation respectively to generate the second sensing signal.First sensory package 12 The first sensing signal and the second sensing signal are sent to processor 14 respectively with the second sensory package 13, the processing of processor 14 connects The first sensing signal and the second sensing signal received, and obtain the torque of axis 2 to be measured.

It is the block diagram of the first sensory package of the axis torch measuring system of the utility model please continue to refer to Fig. 3.Such as figure Shown, in present embodiment, first detecting part 120 of each of first sensory package 12 has MR sensor and two hall sensings Device, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and each first detecting part 120 has a magnetic head, and each first The magnetic head of detecting part 120 is respectively facing the first magnetic grid 10, to be sensed to the first magnetic grid 10, and each Hall sensor and MR The distance between sensor is greater than a pole pitch of the first magnetic grid 10.The MR sensor of each first detecting part 120 and two The sensing direction of Hall sensor along the radial direction of axis 2 to be measured towards the first magnetic grid 10, and each MR sensor with suddenly You are electrically connected in processor 14 sensor.

When carrying out torque measurement, the MR of each first detecting part 120 is sensed the axis torch measuring system 1 of the utility model Device generates the first sensing signal, and MR sensor exports the first sensing signal to processor 14, and each first detecting part 120 is suddenly Your sensor generates the first analog signal when corresponding to the first magnetic grid 10, and Hall sensor exports the first analog signal to processor 14, and when the Hall sensor of the first detecting part 120 the first seam 101 of correspondence, Hall sensor does not generate the first analog signal, And the output of the first analog signal is interrupted, until the first seam 101 produces the sensing range of Hall sensor, Hall in rotation Sensor continues to generate and export the first analog signal, i.e. Hall sensor generates discontinuous first analog signal.Processor 13 according to the first analog signals of Hall sensor output it is continuous whether select to receive the first of the output of two MR sensors and feel Survey one in signal.

Referring to Figure 4 together, be the utility model axis torch measuring system the first sensory package to the first magnetic grid The schematic diagram sensed.As shown, the rotation direction of axis 2 to be measured is clockwise that first connects in present embodiment Seam 101 moves closer to 120 sensing range of the first detecting part on right side on figure, enters the first of the upper right side of figure in the first seam 101 Before the sensing range of the Hall sensor of detecting part 120, processor 14 receives the MR sensing of first detecting part 120 on the upper right side of figure First sensing signal of device output.

With the lasting rotation of axis 2 to be measured, the first seam 101 enters being located at for first detecting part 120 on the upper right side of figure First detecting part 120 on the upper right side of the sensing range of the Hall sensor on the right side of MR sensor, i.e. figure is located at the MR sensor right side When the sensing direction of the Hall sensor of side is towards the surface for the axis to be measured 2 being located in the first seam 101, on figure on the right side of the The Hall sensor of one detecting part 120 being located on the right side of MR sensor can not generate the first analog signal, at this point, the upper right side of figure The Hall sensor of first detecting part 120 being located on the right side of MR sensor interrupts the output of the first analog signal, i.e. the upper right side of figure The first detecting part 120 be located at MR sensor on the right side of Hall sensor output the first analog signal it is discontinuous, work as processing When the first analog signal that device 14 receives is discontinuous, judgement is located at the MR sensor of first detecting part 120 on the upper right side of figure Close to the first seam 101, i.e. the MR sensor of first detecting part 120 on the upper right side of figure is upper right based on scheming close to the first seam 101 For the MR sensor of first detecting part 120 of side close to the judgement of the first seam 101, processor 14, which interrupts, receives the of the upper right side of figure First sensing signal of the MR sensor output of one detecting part 120, and switch the MR sensor for receiving another first detecting part 120 First sensing signal of output, i.e., what the MR sensor for the first detecting part 120 that processor 14 receives figure upper left side at this time exported First sensing signal.

Axis 2 to be measured continues to drive the rotation of the first magnetic grid 10, when the first seam 101 enters the first detecting part of figure upper left side The MR that is located at of the sensing range of 120 Hall sensor being located on the right side of MR sensor, the first detecting part 120 of figure upper left side is passed The sensing direction of Hall sensor on the right side of sensor can not be produced towards the surface for the axis to be measured 2 being located in the first seam 101 Raw first analog signal, at this point, the Hall sensor of the first detecting part 120 of figure upper left side being located on the right side of MR sensor interrupts The Hall sensor of the output of first analog signal, i.e. the first detecting part 120 of figure upper left side being located on the right side of MR sensor is defeated The first analog signal out is discontinuous, and when the first analog signal that processor 14 receives is discontinuous, judgement is located on figure The MR sensor of first detecting part 120 in left side judges the first detecting part 120 of figure upper left side close to the first seam 101 MR sensor is close to the first seam 101, and the MR sensor of the first detecting part 120 based on figure upper left side is close to the first seam 101 Judgement, processor 14 interrupt receive figure upper left side the first detecting part 120 MR sensor output the first sensing signal, and The first sensing signal for receiving the MR sensor output of another first detecting part 120 is switched to, i.e. this processor 14 receives on figure First sensing letter of the MR sensor output of first detecting part 120 on right side.

When the first seam 101 of rotation is again introduced into the sensing of the Hall sensor of first detecting part 120 on right side on figure Range, processor 14 switch received first sensing signal of institute, such cyclic switching again, and processor 14 persistently receives the first biography Feel the first sensing signal of two the first detecting parts 120 output of component 12, and by the two of the first sensory package 12 received The first sensing signal that a first detecting part 120 exports is integrated into the first transducing signal.

Likewise, if when the rotation direction of axis to be measured 2 is counter clockwise direction, processor 14 first receives in figure on the left of the First sensing signal of the MR sensor output of one detecting part 120, when the first seam 101 rotated counterclockwise enters left side in figure The first detecting part 120 Hall sensor sensing range, processor 14 interrupt receive figure in left side the first detecting part 120 The output of MR sensor the first sensing signal, and the MR sensor for switching in reception figure first detecting part 120 on right side is defeated The first sensing signal out, when the first seam 101 continued to rotate enters the hall sensing of first detecting part 120 on right side in figure The sensing range of device, processor 14 interrupt the first sensing signal for receiving the MR sensor output of first detecting part 120 on right side, And switch to the first sensing signal of the MR sensor output of first detecting part 120 in left side in reception figure.In this way, constantly recycling Switching, processor 14 persistently receive the first sensing signal of two the first detecting parts 120 output of the first sensory package 12, and will First sensing signal of two the first detecting parts 120 output of the first sensory package 12 received is integrated into the first sensing letter Number.

Be same as the first sensory package 12, second detecting part 130 of each of second sensory package 13 also have MR sensor with Two Hall sensors, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and each second detecting part 130 has magnetic Head, the magnetic head of each second detecting part 130 are respectively facing the second magnetic grid 11, to sense to the second magnetic grid 11, and each suddenly Your the distance between sensor and MR sensor are greater than a pole pitch of the second magnetic grid 11.The MR of each second detecting part 130 Sensor and two Hall sensors along the radial direction of axis 2 to be measured towards the second magnetic grid 11, and each MR sensor with Hall sensor is electrically connected in processor 14.The MR sensor of each second detecting part 130 generates the second sensing signal, And MR sensor exports the second sensing signal to processor 13.Corresponding second magnetic of the Hall sensor of each second detecting part 130 Generate the second analog signal when grid 11, and Hall sensor exports the second analog signal to processor 14, and the second detecting part 130 Hall sensor corresponding second seam 111 when, Hall sensor does not generate the second analog signal, and interrupts the second analog signal Output, until the second seam 111 produces the sensing range of Hall sensor in rotation, Hall sensor continues to generate and defeated Second analog signal out.The second analog signal that processor 14 is exported according to Hall sensor it is continuous whether alternately receive two One in second sensing signal of MR sensor output.In other words, the first magnetic grid 10 is sensed with the first sensory package 12 Principle it is identical, two the second detecting parts 130 of the second sensory package 13 export the second sensing signal, 14 basis of processor respectively The interruption selection of second analog signal of the Hall sensor output of second detecting part 130 in two receive another the Second sensing signal of the MR sensor output of two detecting parts 130, and principle cyclic switching receives two the second detecting parts accordingly Second sensing signal of 130 MR sensor output, then exports the MR sensor of receive two the second detecting parts 130 The second sensing signal be integrated into the second transducing signal, complete the sensing to the second magnetic grid 11.

It should be noted that the MR sensor of two the first detecting parts 120 carries out the of sensing generation to the first magnetic grid 10 The second sensing that the MR sensor of one sensing signal and two the second detecting parts 130 carries out sensing generation to the second magnetic grid 11 is believed Number it is pulse signal, can be calculated on axis 2 to be measured by the pulse signal of the MR sensor output of two the first detecting parts 120 The position angle of the point of corresponding two the first detecting parts 120 passes through the pulse of the MR sensor output of two the second detecting parts 130 Signal can calculate the position angle of the point of corresponding two the second detecting parts 130 on axis 2 to be measured.In other words, processor 14 The position angle that the point of corresponding two the first detecting parts 120 on axis 2 to be measured can be calculated by the first transducing signal, can also lead to Cross the position angle that the second transducing signal calculates the point of corresponding two the second detecting parts 130 on axis 2 to be measured.Using this reality When with novel axis torch measuring system 1, the first sensory package 12 can be zero point, the second sensory package with the first seam 101 13 can be zero point with the second seam 111, when the first magnetic grid 10 and the second magnetic grid 11 as axis 2 to be measured rotates one week, pass through First analog signal of the Hall sensor output of the first sensory package 12 and the second sensory package 13 is with the second analog signal Corresponding zero point can be captured, and then starts to export the absolute position angle of axis 2 to be measured.In other words, the first magnetic grid at this time 10 and first sensory package 12 combination and the combination of the second magnetic grid 11 and the second sensory package 13 be equivalent to two sets of increment types Encoder, the first magnetic grid 10 and the second magnetic grid 11 rotate one week with axis 2 to be measured, can pass through the first analog signal and second Analog signal finds preset zero point.

The mode that 2 torque of axis to be measured is calculated the following detailed description of processor 14, when axis 2 to be measured is along its axis direction When rotating, 2 maximum stress of axis to be measured is distributed in its surface, stress expression formula are as follows:

In formula:

M_xTorque on -2 cross section of axis to be measured；

ρ-arbitrary point is to circle center distance；

I_P- polar moment of inertia.

D is the radius of axis 2 to be measured in formula.

And the expression formula of the stress and strain of axis 2 to be measured are as follows:

τ=Gr

In formula:

G-the coefficient of rigidity, general steel G are 80GPa,

In formula:

μ-Poisson's ratio

When axis 2 to be measured rotates along its axis direction, strain are as follows:

In formula:

I.e. as G=80GPa,OrIn formula l be measurement to Measure the distance between two o'clock on axis 2.

In this way, the big of torque suffered by axis 2 to be measured can be calculated by measuring the deflection on axis 2 to be measured between two o'clock It is small.In other words, torque suffered by axis 2 to be measured can be calculated by measuring the angle change on axis 2 to be measured between two o'clock Size.In this way, on the surface that the first magnetic grid 10 and the second magnetic grid 11 are installed on to axis 2 to be measured, and corresponding first magnetic grid 10 with Second magnetic grid 11 installs the first sensory package 12 and the second sensory package 13, then measure on axis 2 to be measured between two o'clock away from From driving axis 2 to be measured to rotate, the first sensory package 12 and the second sensory package 13 can be respectively induced with axis 2 to be measured The first magnetic grid 10 and the second magnetic grid 11 of rotation, and the first sensing signal and the second sensing signal are generated respectively, and processor 14 When receiving the first sensing signal and the second sensing signal, the first sensing signal received and the second sensing are first integrated respectively Signal, with the first transducing signal of corresponding first sensing signal of acquisition and the second transducing signal of corresponding second sensing signal, and It is obtained according to the distance between two o'clock on the first transducing signal, the second transducing signal and axis to be measured 2 by above-mentioned calculation The torque instant to axis 2 to be measured.And its precision for measuring torque and the first detecting part 120 and the second detecting part 130 The size of distance of the axial direction along axis 2 to be measured be inversely proportional, during installation, as long as the first magnetic grid 10 and the second magnetic grid Mounting distance between 11 is arranged bigger, the torque measurement knot of the axis torch measuring system 1 of the utility model to axis 2 to be measured The precision of fruit is higher.

In present embodiment, the distance between two o'clock on axis 2 to be measured is measured using range finder, due to the first detecting part The magnetic head of the MR sensor of the magnetic head of 120 MR sensor and the second detecting part 130 is distinguished along the radial direction of axis 2 to be measured Towards the first magnetic grid 10 and the second magnetic grid 11, i.e. the magnetic head of the MR sensor of the first detecting part 120 and the second detecting part 130 respectively The magnetic head of MR sensor be respectively facing the two o'clock on axis 2 to be measured along the radial direction of axis 2 to be measured, so axis to be measured The position of any of 2 is the position of the first magnetic grid 10 of the magnetic head institute direction of the MR sensor of corresponding first detecting part 120, to be measured The position for measuring another point on axis 2 is the position for corresponding to the second magnetic grid 11 of the magnetic head institute direction of MR sensor of the second detecting part 130 It sets, in other words, measures the MR sensor that the distance between two o'clock on axis 2 to be measured is equal to measurement with the first detecting part 120 Magnetic head corresponding first magnetic grid 10 position and second magnetic grid 11 corresponding with the magnetic head of MR sensor of the second detecting part 130 The distance of the axial direction along axis 2 to be measured of position, range finder therein can use airborne laser range finder, ultrasonic distance measurement Device or other range finders that precise distance measurement may be implemented.

In this way, though the axis torch measuring system 1 of the utility model is using first magnetic grid 10 and tool with the first seam 101 There is the second magnetic grid 11 of the second seam 111, so passes through above-mentioned axis torque measuring using the axis torch measuring system 1 of the utility model Amount method carries out the influence that torque measurement is avoided that the first seam 101 and the second seam 111,14 energy of processor to axis 2 to be measured The first transducing signal and the second transducing signal are integrated out respectively by the first sensing signal and the second sensing signal, and then according to The distance between two o'clock calculates the torque of axis 2 to be measured on one transducing signal, the second transducing signal and axis 2 to be measured.

Further, processor 14 can also obtain the position of axis 2 to be measured by the first transducing signal and the second transducing signal Angle setting degree, axis to be measured 2 two o'clock between position angle it is poor, while the revolving speed of axis 2 to be measured can also be obtained, in this way, using The axis torch measuring system 1 of the utility model axis 2 to be measured is measured can selectively be measured according to actual demand it is to be measured Measure the torque or revolving speed of poor, the to be measured axis 2 of position angle between the position angle of axis 2, the two o'clock of axis to be measured 2.

The installation of the axis torch measuring system of the utility model is explained in detail below, referring back to Fig. 2.The first of the utility model Magnetic grid 10 and the second magnetic grid 11 are ribbon magnetic grid, have no metal-backed, during installation, can be adhere closely to by binding 2 surface of axis to be measured, when pasting, the radial direction ring of banded first magnetic grid 10 and the second magnetic grid 11 along axis 2 to be measured The first seam 101 and the second seam 111 are respectively formed around axis to be measured 2 one weeks, and in interface.In this way, by banded First magnetic grid 10 and the second magnetic grid 11, the axis torch measuring system 1 of the utility model can be used to turn different mechanical equipments Axis carries out torque measurement, for different size of axis 2 to be measured, it is only necessary to which it is appropriate to be selected according to the circumferential size of axis 2 to be measured The first magnetic grid 10 and the second magnetic grid 11 of length, without the annular for being specifically designed, customizing corresponding 2 circumferential size of axis to be measured Closed magnetic grid.

Also, the thickness of the first magnetic grid 10 and the second magnetic grid 11 is between 1.0mm~1.5mm, it is thick in present embodiment Degree is 1.0mm, and the first magnetic grid 10 and the second magnetic grid 11 of low thickness can be easier to be adhered to 2 surface of axis to be measured during installation.

Please refer to fig. 5, its enlarged drawing for the a-quadrant of Fig. 4.As shown, also there is magnetic grid in present embodiment Protective layer 15, magnetic grid protective layer 15 are set to surface of first magnetic grid 10 far from axis 2 to be measured.In present embodiment, magnetic grid is protected Sheath 15 is the stainless steel strip with a thickness of 0.2mm, after the first magnetic grid 10 installs, covers magnetic grid protective layer 15 in the first magnetic 10 surface of grid and fixation, to shield to the first magnetic grid 10.Likewise, for the second magnetic grid 11 of protection, in the second magnetic grid 11 After installing, magnetic grid protective layer 15 is also covered in the surface of the second magnetic grid 11 and is fixed.

Then, the first sensory package 12 and the second sensory package 13 are installed, referring to Figure 2 together and Fig. 5.Installation first passes Feel component 12 two the first detecting parts 120 or the second sensory package 13 two the second detecting parts 130 when, two first sense The spacing distance in survey portion 120 is greater than the width of the first seam 101, and the spacing distance of two the second detecting parts 130 is greater than second and connects The width of seam 111, enter simultaneously to avoid the first seam 101 the MR sensor of two the first detecting parts 120 sensing range or Then the second seam 111 enters the sensing range of the MR sensor of two the second detecting parts 130 simultaneously, avoids influencing the first sense simultaneously Survey the output of signal and the second sensing signal.

Simultaneously, it is contemplated that axis 2 to be measured will appear unstable bounce due to its precision problem in rotation, especially to Under the service condition being relatively large in diameter for measuring axis 2, two first senses of the first magnetic grid 10 and the first sensory package 12 may be made Friction, damage first are generated between survey portion 120 or two the second detecting parts 130 of the second magnetic grid 11 and the second sensory package 13 Magnetic grid 10, the second magnetic grid 11, the first detecting part 120 or the second detecting part 130, to avoid accidental damage, when installation, it is ensured that Being situated between one detecting part 120 and the first magnetic grid 101 away from the air gap between air gap and the second detecting part 130 and the second magnetic grid 111 Air gap and second between 0.5mm~1.5mm, in present embodiment, between the first detecting part 120 and the first magnetic grid 101 Air gap between detecting part 130 and the second magnetic grid 111 is 1.5mm.Based on this, the pole pitch of the first magnetic grid 10 and the second magnetic grid 11 Also corresponding larger, in present embodiment, the pole pitch of the first magnetic grid 10 and the second magnetic grid 11 is 5mm, i.e. the first detecting part 120 MR sensor and the distance between Hall sensor and the MR sensor and Hall sensor of the second detecting part 130 between Distance is greater than 5mm.

For make the first sensory package 12 and the second sensory package 13 be easier to reach above-mentioned at a distance from installation requirement, this is practical Novel axis torch measuring system 1 further includes mounting bracket (not shown), in the first detecting part 120 or the second detecting part After 130 adjust mounting distance, the first mounting hole 1201 or the second mounting hole 1301 are passed through with screw and then fix the first sensing Portion 120 or the second detecting part 130 are in mounting bracket.First detecting part 120 and the second detecting part 130 are respectively provided with MR sensor, MR sensor is sensed using first magnetic grid 10 of the magnetoresistance to rotation with the second magnetic grid 11, the first magnetic of present embodiment Grid 10 and the second magnetic grid 11 are respectively provided with multipair magnetic pole, the first magnetic grid 10 and the second magnetic grid 11 with the every rotation one of axis 2 to be measured The quantity of the pulse signal of week, the first detecting part 120 and the output of the second detecting part 130 is the first magnetic grid 10 and the second magnetic grid respectively Twice of 11 number of magnetic pole pairs, i.e. the first magnetic grid 10 and the pole pair that the second magnetic grid 11 has are more, and the axis of the utility model is turned round The resolution ratio of square measuring system 1 is higher, higher to the measurement accuracy of the torque of axis 2 to be measured, especially practical new using this When the axis torch measuring system 1 of type axis 2 to be measured relatively large to axis radius carries out torque measurement, resolution ratio is relatively more Height, measurement accuracy are relatively bigger.In this way, the axis torch measuring system 1 of the utility model is using first with the first seam 101 Magnetic grid 10 can not only be such that the axis torch measuring system 1 of the utility model is suitable for with the second magnetic grid 11 of the second seam 111 Torque measurement is carried out to the axis to be measured 2 of different-diameter, but also there is high-resolution and high-precision measurement result.Further Ground, each first detecting part 120 also have the first connection jaws 1202, and each second detecting part 130 also has the second connection jaws 1302, the MR sensor of each first detecting part 120 is connected by the first connection jaws 1202 with signal connecting line with Hall sensor It is connected to processor 14, the MR sensor and Hall sensor of each second detecting part 130 use signal by the second connection jaws 1302 Connecting line is connected to processor 14, and processor 14 constantly receives the first analog signal, the first sensing signal, the second analog signal With the second sensing signal, and judged accordingly, switching receives the first sensing signal or the second sensing signal, and integrates shape Turned at the first transducing signal and the second transducing signal eventually by the first transducing signal and the processing of the second transducing signal The size of the torque of dynamic axis to be measured 2.

Further, the axis torch measuring system 1 of present embodiment further includes output module 16 and display module 17, place Device 14 is managed to be electrically connected by output module 16 and display module 17.When processor 14 constantly receives the first sensing signal and Two sensing signals, and the first transducing signal formed according to the first sensing signal of integration and the second sensing signal and the second sensing are believed Number and axis to be measured 2 on the distance between two o'clock obtain the torque measurement of axis 2 to be measured as a result, producing in turn according to measurement result Raw display signal, then will show that signal is sent to display module 17 by output module 16, display module 17 will show that signal turns Torque capacity is turned to, and then can intuitively show the torque of axis 2 to be measured according to display signal.Meanwhile it can also export to be measured Position angle difference or the revolving speed between the position angle of axis 2, the two o'clock of axis to be measured 2 are measured, so that the axis of the utility model Torch measuring system 1 has the function of a variety of measurements.

In present embodiment, the first sensing signal and the second sensing signal are constantly received using calculator, and by ranging On the axis to be measured 2 that device measurement obtains in the distance between two o'clock write-in operation program, the axis to be measured 2 of rotation is calculated in real time Torque, and the torque by showing axis 2 to be measured as computer display.It should be noted that this implementation Mode is only a kind of embodiment of the axis torch measuring system 1 of the utility model, should not be as limit.

In conclusion a kind of axis torch measuring system provided by the utility model, by that will have the of the first seam One magnetic grid is installed on the surface of axis to be measured with the second magnetic grid interval with the second seam, make the first magnetic grid and the second magnetic grid with Axis to be measured rotation, and sensed with first magnetic grid of the first detecting part of the first sensory package to rotation and generate first Sensing signal senses the second magnetic grid of rotation with the second detecting part of the second sensory package and generates the second sensing signal, And then processor believes the second sensing of the output of the first sensing signal and the second sensory package of the output of the first sensory package It number is handled to obtain the torque of axis to be measured, the axis torch measuring system installation of the utility model is simple, can be applicable in In carrying out torque measurement, and resolution ratio to the different axis to be measured of shaft diameter, measurement accuracy is high, can be effectively to mechanical equipment Shaft power is monitored in real time, and then while controlling mechanical equipment normal operation, adjusts its output power, reasonably to mention High working efficiency, simultaneously, moreover it is possible to make quick diagnosis to the failure to mechanical equipment, improve maintenance efficiency.

It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that include the process, method of a series of elements, device not only include those elements, but also including Other elements that are not explicitly listed, or further include for this process, method, article or the intrinsic element of device. In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element There is also other identical elements in process, method, article or device.

The embodiments of the present invention is described above in conjunction with attached drawing, but the utility model is not limited to Above-mentioned specific embodiment, the above mentioned embodiment is only schematical, rather than restrictive, this field it is general Logical technical staff is not departing from the utility model aims and scope of the claimed protection feelings under the enlightenment of the utility model Under condition, many forms can be also made, are belonged within the protection of the utility model.

Claims (10)

1. a kind of axis torch measuring system characterized by comprising

First magnetic grid has the first seam, and on the surface to be set to axis to be measured；

Second magnetic grid has the second seam, and on the surface to be set to the axis to be measured, and with first magnetic grid Interval setting；

First sensory package comprising two the first detecting parts, two first detecting part interval settings, and respectively along institute The radial direction of axis to be measured is stated towards first magnetic grid, two first detecting parts are to sense with described to be measured First magnetic grid of axis rotation is to generate the first sensing signal；

Second sensory package comprising two the second detecting parts, two second detecting part interval settings, and respectively along institute The radial direction of axis to be measured is stated towards second magnetic grid, two second detecting parts are to sense with described to be measured Second magnetic grid of axis rotation is to generate the second sensing signal；

Processor receives first sensing signal and second sensing signal, and to handle the first sensing letter The torque of the axis to be measured number is obtained with second sensing signal.

2. axis torch measuring system as described in claim 1, which is characterized in that the spacing distance of two first detecting parts Greater than the width of first seam, the spacing distance of two second detecting parts is greater than the width of second seam.

3. axis torch measuring system as described in claim 1, which is characterized in that described in two first detecting parts and two Second detecting part is respectively provided with magnetic head, and the magnetic head of first detecting part is respectively facing first magnetic grid, second sensing The magnetic head in portion is respectively facing second magnetic grid.

4. axis torch measuring system as claimed in claim 3, which is characterized in that first detecting part and first magnetic grid Between air gap and second detecting part and second magnetic grid between air gap between 0.5mm~1.5mm.

5. axis torch measuring system as described in claim 1, which is characterized in that first magnetic grid and second magnetic grid Thickness is respectively interposed between 1.0mm~1.5mm.

6. axis torch measuring system as described in claim 1, which is characterized in that each first detecting part and each described Second detecting part is respectively provided with MR sensor and two Hall sensors, and two Hall sensors are symmetrically disposed on the MR The two sides of sensor, and the MR sensor of each first detecting part and two Hall sensors along it is described to Measure the radial direction arrangement of axis and towards first magnetic grid, the MR sensor of each second detecting part and two The Hall sensor is along the radial direction arrangement of the axis to be measured and towards second magnetic grid；Wherein described first pass Feel the first analog signal caused by two Hall sensors of the component by each first detecting part alternately to receive First sensing signal caused by the MR sensor of one of two first detecting parts；Wherein described second pass Feel the second analog signal caused by two Hall sensors of the component by each second detecting part alternately to receive Second sensing signal caused by the MR sensor of one of two second detecting parts.

7. axis torch measuring system as claimed in claim 6, which is characterized in that the processor integrates two alternately received First sensing signal caused by the MR sensor of a first detecting part is the first transducing signal, the processing Device integrates second sensing signal caused by the MR sensor of two second detecting parts alternately received Second transducing signal, the processor obtain the axis to be measured according to first transducing signal and second transducing signal Torque.

8. axis torch measuring system as claimed in claim 7, which is characterized in that in each first detecting part it is described suddenly Your the distance between sensor and the MR sensor are greater than the pole pitch of first magnetic grid；In each second detecting part The Hall sensor and the distance between the MR sensor be greater than the pole pitch of second magnetic grid.

9. axis torch measuring system as claimed in claim 8, which is characterized in that it further include display module, the processor root Measurement result is obtained according to first transducing signal and second transducing signal, and display letter is generated according to the measurement result Number, and the display module is displayed signal to described in transmission, the display module shows described to be measured according to the display signal Measure the torque of axis.

10. axis torch measuring system as described in claim 1, which is characterized in that further include magnetic grid protective layer, the magnetic grid is protected Sheath is set to the surface far from the axis to be measured of first magnetic grid and second magnetic grid.