CN206891629U - Digital display torsion testing machine is used in teaching - Google Patents

Abstract

The utility model discloses a kind of teaching digital display torsion testing machine, is loaded using 220V individual events variable speed electric motors, particularly and worm reduction gear combination motor, and the arm of force combines with pressure sensor surveys moment of torsion, and rotary encoder surveys torsion angle；Equipped with torsion testing machine digital display Acquisition Instrument, electronic computer and torsion test special-purpose software, the instantaneous value and maximum of big numerical monitor moment of torsion on the front panel of torsion testing machine digital display Acquisition Instrument；The signal of collection is passed to electronic computer by torsion testing machine digital display Acquisition Instrument, torsion test special-purpose software is operated on electronic computer, shearing stress-shear strain the curve map that can be drawn and be put on Dynamic Announce moment of torsion-twist diagram, torsional specimen cross-sectional circumferential, record surrender moment of torsion, peak torque, calculate, record yield point shearing stress, maximum shear stress, all experimental results are preserved, and can be printed at any time；Electricity consumption only needs 500W 220V individual event power supplys.

Description

Digital display torsion testing machine is used in teaching

Technical field

School's material mechanics experiment equipment is the utility model is related to, especially suitable for industry science institution of higher education machinery, building The torsion test equipment of the professional materials mechanics teaching experiment of engineering, architectural engineering class.

Background technology

At present, in institution of higher education's machinery, civil engineering, architectural engineering class professional teaching, in order to be advantageous to help student The theory of mechanics of materials knowledge learned is verified, is advantageous to actual measurement ability, comprehensive using ability and the innovation ability of training student, opens If torsion test project.The experimental project, first have to solve tested sample is carried out torsion loading, measurement, display, calculating, The problems such as record.At present, low-grade torsion testing machine only shows moment of torsion and torsion angle mostly, indivedual useful reel mechanical drawings , it is very coarse；High-grade has microcomputer controlled electronic torsion testing machine, although function is some more, is not suitable for teaching experiment and uses. Have the following disadvantages：

1. imparting knowledge to students on torsion test, not only it is required to measure and show moment of torsion and torsion angle, is also required to draw out The graph of relation of preferable moment of torsion and torsion angle, and low-grade torsion testing machine only shows moment of torsion and torsion angle mostly, it is impossible to The graph of relation of moment of torsion and torsion angle is drawn, indivedual useful reel mechanical drawings, it is very coarse, do not reach teaching experiment It is required that.

2. high-grade microcomputer controlled electronic torsion testing machine need to use very powerful power supply；In experimentation, torque value The digital very little shown on computer monitor, is not easy to several student viewings；Operate it is more complicated, in limited laboratory Interior student is not easy to grasp；Cost is extra-high, alone very low in teaching experiment utilization rate, and being used for student experiment in group with more can cause Greatly waste.

The content of the invention

The utility model is intended to a kind of structure in order to avoid being provided in place of shortcoming and defect present in above-mentioned technology It is i.e. simple and advanced, principle is directly perceived, easy to operate, cheap, the measurement, display, meter of teaching torsion test can be fully met Calculate, record, the teaching digital display torsion testing machine drawn, preserve requirement.

To achieve the above objectives, it is achieved through the following technical solutions：

Digital display torsion testing machine is used in one kind teaching, including：Frame, speed change charging assembly, torque measurement component, chuck group Part, torsion angle measurement assembly, display record component；

Frame includes：It is left base, left column, transverse connecting pipe, seat beam, left seat board, right seat board, right column, right base, small Column, needle beam；

Wherein, left column, seat beam, right column are made of circular bar square hollow section steel, left base, right base, post, small horizontal stroke Beam is made of channel-section steel, and transverse connecting pipe is round steel pipe, and each part is firmly welded together.

As preferred structure, speed change charging assembly includes：Two-direction switch, speed regulator, speed regulator seat, variable speed electric motors, particularly, speed change Motor special reduction gear, right angle turn plate, variable speed electric motors, particularly seat, universal coupling, worm reduction gear, handwheel；

Wherein, the gearratio 1 of worm reduction gear：40~1：55, output torque is not less than 150Nm, is fixed by bolts to the right side On seat board, output shaft is located at lower left, and input shaft is above, and preceding input is provided with handwheel, rear input universal joint shaft Section is coupled with the output shaft of variable speed electric motors, particularly special reduction gear；

Wherein, handwheel is in addition to mounting hole, is entity, surfacing, and wheel outer rim is micro- during clamping torsional specimen without corner angle Call, size determines according to convenient manual operation；

Wherein, variable speed electric motors, particularly uses 220V individual event power supplys, 150 ~ 250W of power, the speed reducing ratio of variable speed electric motors, particularly special reduction gear 1：8~1：12 or so, the input shaft of the output shaft and variable speed electric motors, particularly special reduction gear of variable speed electric motors, particularly is docking together, variable speed electric motors, particularly Match with the body of variable speed electric motors, particularly special reduction gear and be fixed together, the vertical plane that front end turns plate with right angle is fixed, and right angle turns plate Plane of structure is connected with the upper cross plate of variable speed electric motors, particularly seat with bolt, and the riser lower end of variable speed electric motors, particularly seat is fixed on the conjunction behind right seat board Put right position；

Wherein, two-direction switch, speed regulator are fixed on speed regulator seat, 90~1400rpm of speed adjustable range of speed regulator, speed governing The lower end of device seat is fixed on centre position on the right side of right seat board, and two-direction switch has three wires to be connected with speed regulator, and speed regulator is with becoming Speed motor is connected with docking cable, and speed regulator is connected to 220V power line again；

As preferred structure, torque measurement, which is set up, to be included：The arm of force, arm of force axle, arm of force bearing housing, sensor top plate, biography Sensor top, pressure sensor, sensor fixing bolt, arm of force gag lever post；

Wherein, the front end sleeve of the arm of force is fixed, the both sides riser of arm of force bearing housing on arm of force axle with arm of force axle with flat key Bearing, the left end insertion left side bearing of arm of force axle are installed, the right-hand member of arm of force axle is stretched out in arm of force axle bearing through right side bearing The right side of seat；

Wherein, pressure sensor upper and lower ends are all formed with screw, and pressure sensor upper end is fixed with sensor fixing bolt In the follower head of the arm of force, lower end is come directly towards equipped with sensor, and sensor is withstood on sensor top plate, sensor top plate bolt Post upper end is fixed on, the pressure size suffered by pressure sensor and pressure sensor center line to arm of force shaft centre line distance Product be to be equal to the moment of torsion suffered by torsional specimen, during Accurate Calibration moment of torsion, be converted into torque value and show, while it is micro- to eliminate bearing Error caused by less friction；

Wherein, the upper end of arm of force gag lever post bolts with arm of force lower vertical, and lower end passes through the hole of sensor top plate, lower end Nut is fixed with, arm of force gag lever post is cased with compression spring between nut and sensor top plate, and the arm of force is rotated up to play limit Make and use, in addition to the arm of force is upward out, the compression spring does not stress；

Chuck component includes：Left chuck, chuck shrouding, chuck shrouding fixing screws, torsional specimen, right chuck, chuck envelope Board shaft；

Wherein, left chuck is arranged on the right-hand member of arm of force axle, and right chuck is arranged on the output shaft of worm reduction gear, the arm of force Axle, left chuck, right chuck, worm reduction gear output shaft center line on same straight line, the relative one end of two chucks Be formed with the square groove of centering installation torsional specimen, be also formed with vertical with the square groove opening for installing chuck shrouding, chuck shrouding axle by Its own threaded portion carried is arranged on the outer position of opening, and chuck shrouding is through left chuck and right folder by chuck shrouding axle In the opening of head, can freely it rotate；

Wherein, the both ends of torsional specimen be made with left chuck and right chuck square groove matching it is flat-shaped, by the flat of torsional specimen Shape termination is put into the square groove of left chuck and right chuck, shuts chuck shrouding, tightens chuck shrouding fixing screws, is just completed pair The clamping of torsional specimen；

Torsion angle measurement assembly includes：Corner line wheel, encoder line wheel, encoder seat, rotary encoder, line wheel coiling；

Wherein, corner stitch wheel is enclosed on the right-hand member of right chuck, is fixed with screw and right chuck, and encoder seat lower end is fixed present Suitable position behind beam, upper end are equipped with rotary encoder, and the rotating shaft of rotary encoder is stretched out on the right side of encoder seat, in rotating shaft Encoder line wheel is fixed with, the line wheel coiling of closing, the line of two line wheels are wound with the wire casing of corner line wheel and encoder line wheel Groove diameter is equal, and the torsion angle of transmission is also equal, is equal to the relative torsional angle at torsional specimen both ends；

As preferred structure, display record component includes：Torsion testing machine digital display Acquisition Instrument, electronic computer main frame, liquid Crystal display, keyboard, mouse, printer；

Wherein, torsion testing machine digital display Acquisition Instrument internal circuit connection capture card and some electronic components, and be equipped with and adopt Collect software；

Wherein, torsion testing machine digital display Acquisition Instrument front panel has the window of upper and lower two big numerical monitor torque value, upper window Mouthful show maximum, and can peak value retain, lower window shows instantaneous value, has " clearing ", RESET two to press below lower window Button, " clearing " button is pressed, instantaneous value shows " 0 ", and by the Reset button, peak value is shown " 0 "；

Wherein, torsion testing machine digital display Acquisition Instrument rear board is provided with 220V power supplys, sensor, encoder, computer number According to four sockets of line, it is respectively intended to connect 220V power supplys, pressure sensor, rotary encoder, electronic computer main frame, also installs There is a power switch button；

Wherein, the upper lid of torsion testing machine digital display Acquisition Instrument is opened, the plug of panel data line is pulled up from socket, changed The connection plug of demarcation button panel is plugged, demarcation state connecting plug has been connected with wire jumper, state is demarcated into moment of torsion, in left folder Standard torquemeter is installed, the button that operation is demarcated on button panel simultaneously does demarcation loading to testing machine, can be right between head and right chuck Display, the torque value Accurate Calibration of record, demarcation terminate measuring state to be reset into, load onto torsion testing machine digital display Acquisition Instrument Upper lid；

Wherein, torsion test special-purpose software is installed, being established on the desktop of liquid crystal display has on electronic computer main frame Software link icon, before loading experiment starts, double mouse click software link icon, liquid crystal display pop-up display interface, interface The left side is a row toolbar, accounts for 1/6th of interface, remainder is Drawing zone；

Wherein, the toolbar at liquid crystal display pop-up display interface is successively from top to bottom：Communication setting（Provided with port and Baud rate input port）, " opening serial ports " and " closing serial ports " switching push button, parameter setting（Inputted provided with specimen finish and gauge length Mouthful）, Experiment name input port, curve manipulation（Provided with preservation curve, printing curve button）, " having yield point experiment " and " without bend Clothes point experiment " switching push button；

Wherein, the Drawing zone at liquid crystal display pop-up display interface again can " torque-twist curve " and " shearing stress- Two interfaces of shear strain curve " switch mutually, and switching push button is initially located in " torque-twist curve " interface in the upper left corner, horizontal Coordinate representation torsion angle, ordinate represent moment of torsion, are switched to " shearing stress-shear strain curve " interface, and abscissa represents shear strain, Ordinate represents shearing stress；

Wherein, instant torque value and maximum torque are shown on torsion testing machine digital display Acquisition Instrument front panel window, simultaneously Signal is passed into electronic computer main frame, tested in the toolbar of the display interface of liquid crystal display ejection with input through keyboard The diameter and gauge length of title, torsional specimen, the relevant button on mouse operation tool column, so that it may in the display interface of liquid crystal display Preferable moment of torsion-twist diagram is drawn, the Experiment name for having input among curve map top, loading terminates, and carries out relevant Operation, yield point moment of torsion, peak torque can be shown, and recorded on the graph, curve map can be printed with printer immediately, Also it can be stored on electronic computer main frame and print at any time；

Wherein, the torsion test special-purpose software of electronic computer main frame installation, can also calculate each moment torsional specimen The shearing stress put in cross-sectional circumferential and shear strain, and it is bent to draw the shearing stress-shear strain put in torsional specimen cross-sectional circumferential Line chart, yield point shearing stress and maximum shear stress are calculated, be switched to " shearing stress-shear strain curve " interface, you can display, note Record, printing and preservation.

Principle of the present utility model and operation are described below：The switch of torsion testing machine digital display Acquisition Instrument and speed regulator is pressed To off position, then connect all data wire and power line；Two-direction switch is screwed into a gear of " suitable ", speed regulator is opened and opens Close, variable speed electric motors, particularly is started working, and is driven right chuck to rotate, suitable rotating speed is transferred to speed regulator, when the square groove opening of right chuck When almost being alignd with the square groove opening of left chuck, speed regulator is closed, is finely tuned with handwheel, make the square groove opening of right chuck and left folder The square groove opening of head is perfectly aligned, opens chuck shrouding, by the both ends of torsional specimen be respectively put into the square groove opening of right chuck with In the square groove opening of left chuck, chuck shrouding is shut, tightens chuck shrouding fixing screws, completes the clamping of torsional specimen；Open Torsion testing machine digital display Acquisition Instrument, it is to be retrieved finish it is stable after, press " clearings " button and the Reset button clearing；Open electrometer Calculation machine, after liquid crystal display is stable, double-click the software link icon of liquid crystal display, pop-up display window, by software manual Carry out continuing to operate；The speed governing button of speed regulator is rotated, is transferred to as far as possible low rotating speed, opens governor switch, that is, is started to examination Sample reverses loading, and the arm of force is acted on, the pressure sensor for being fixed on its termination is under pressure and is produced signal, rotate simultaneously Encoder also produces torsion angle signal, all incoming torsion testing machine digital display Acquisition Instrument of two signals, torsion testing machine digital display Acquisition Instrument The instant moment of torsion of simultaneous display and peak torque, electronic computer synchronize calculating, draw and show；There is the torsion of yield point real Test after yielding stage has been crossed, should be tuned up reverse speed by speed regulator, to accelerate to test；Speed governing is closed at the end of loading Device, then the operation of correlation is carried out, power cut-off is completed, closes all power supplys.

The utility model is loaded using 220V individual events variable speed electric motors, particularly and worm reduction gear combination motor, and speed adjustable range is completely full The requirement of foot teaching torsion test；Combined using the arm of force with pressure sensor and survey moment of torsion, principle is directly perceived, and installation is simple；Using rotation Turn encoder and survey torsion angle, be easily installed and torsion angle transmission；Equipped with torsion testing machine digital display Acquisition Instrument, electronic computer and torsion Turn experiment special-purpose software；The instantaneous value and maximum of big numerical monitor moment of torsion on the front panel of torsion testing machine digital display Acquisition Instrument, It is easy to watch during several student experimentings；Signal is passed to electronic computer by torsion testing machine digital display Acquisition Instrument, is calculated in electronics Hands- operation torsion test special-purpose software, simultaneously Dynamic Announce moment of torsion-twist diagram, torsional specimen cross section can be drawn The shearing stress put on circumference-shear strain curve map, record surrender moment of torsion, peak torque, calculate, record yield point shearing stress, most Big shearing stress, all experimental results are preserved, and can printed at any time；Electricity consumption only needs 500W 220V individual event power supplys.

In summary the technical measures taken, realize the purpose of this utility model.

Compared with prior art, the utility model has reasonable in design, and construction is simple and advanced, cheap, operation Safety, it is easy to use, the advantages that entirely appropriate teaching experiment demand.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, described in detail as follows.

Brief description of the drawings

The utility model totally 4 width accompanying drawing, wherein：

Fig. 1 is the main structure diagram of the utility model main body.

Fig. 2 is the left view of Fig. 1 left-halfs.

Fig. 3 is Fig. 1 A direction views.

Fig. 4 is the schematic diagram of display record component of the present utility model.

Represent the word "left", "right", "front", "rear" in orientation both with respect to figure in patent application document of the present utility model Described in 1.

In figure：1st, frame, 2, left base, 3, left column, 4, transverse connecting pipe, 5, seat beam, 6, left seat board, 7, torque measurement Component, 8, the arm of force, 9, arm of force axle, 10, arm of force bearing housing, 11, chuck component, 12, left chuck, 13, chuck shrouding, 14, folder Head shrouding fixing screws, 15, torsional specimen, 16, right chuck, 17, corner line wheel, 18, torsion angle measurement assembly, 19, encoder Line wheel, 20, speed change charging assembly, 21, two-direction switch, 22, speed regulator, 23, speed regulator seat, 24, right seat board, 25, right column, 26th, right base, 27, post, 28, needle beam, 29, sensor top plate, 30, sensor top, 31, pressure sensor, 32, pass Sensor fixing bolt, 33, arm of force gag lever post, 34, encoder seat, 35, rotary encoder, 36, line wheel coiling, 37, variable speed electric motors, particularly, 38th, variable speed electric motors, particularly special reduction gear, 39, right angle turn plate, 40, variable speed electric motors, particularly seat 41, universal coupling, 42, worm reduction gear, 43rd, handwheel, 44, chuck shrouding axle, 45, display record component, 46, torsion testing machine digital display Acquisition Instrument, 47, electronic computer master Machine, 48, liquid crystal display, 49, keyboard, 50, mouse, 51, printer.

Embodiment

Digital display torsion testing machine is used in a kind of teaching as shown in Figure 1, Figure 2, Figure 3 and Figure 4, including：Frame 1, speed change loading Component 20, torque measurement component 7, chuck component 11, torsion angle measurement assembly 18, display record component 45；

Frame 1 includes：Left base 2, left column 3, transverse connecting pipe 4, seat beam 5, left seat board 6, right seat board 24, right column 25th, right base 26, post 27, needle beam 28；

Wherein, left column 3, seat beam 5, right column 25 are made of circular bar square hollow section steel, left base 2, right base 26, small vertical Post 27, needle beam 28 are made of channel-section steel, and transverse connecting pipe 4 is round steel pipe, and each part is firmly welded together.

As preferred structure, speed change charging assembly 20 includes：Two-direction switch 21, speed regulator 22, speed regulator seat 23, speed change electricity Machine 37, variable speed electric motors, particularly special reduction gear 38, right angle turn plate 39, variable speed electric motors, particularly seat 40, universal coupling 41, worm reduction gear 42, Handwheel 43；

Wherein, the gearratio 1 of worm reduction gear 42：40~1：55, output torque is not less than 150Nm, is fixed by bolts to On right seat board 24, output shaft is located at lower left, and input shaft is above, and preceding input is provided with handwheel 43, and rear input is with ten thousand It is coupled to shaft coupling 41 with the output shaft of variable speed electric motors, particularly special reduction gear 38；

Wherein, handwheel 43 is entity, surfacing, wheel outer rim is without corner angle, clamping torsional specimen 15 in addition to mounting hole When microcall, size determines according to convenient manual operation；

Wherein, variable speed electric motors, particularly 37 uses 220V individual event power supplys, 150 ~ 250W of power, and variable speed electric motors, particularly special reduction gear 38 subtracts Fast ratio 1：8~1：12 or so, the input shaft of the output shaft and variable speed electric motors, particularly special reduction gear 38 of variable speed electric motors, particularly 37 is docking together, The body of variable speed electric motors, particularly 37 and variable speed electric motors, particularly special reduction gear 38, which matches, to be fixed together, and the vertical plane that front end turns plate 39 with right angle is consolidated Fixed, the plane of structure that right angle turns plate 39 is connected with the upper cross plate of variable speed electric motors, particularly seat 40 with bolt, the riser lower end of variable speed electric motors, particularly seat 40 It is fixed on right seat board（24）Correct position below；

Wherein, two-direction switch 21, speed regulator 22 are fixed on speed regulator seat 23, and the speed adjustable range 90 of speed regulator 22~ 1400rpm, the lower end of speed regulator seat 23 are fixed on the right side centre position of right seat board 24, and two-direction switch 21 has three with speed regulator 22 Wire is connected, and speed regulator 22 is connected with variable speed electric motors, particularly 37 with docking cable, and speed regulator 22 is connected to 220V power line again；

As preferred structure, torque measurement, which sets up 7, to be included：The arm of force 8, arm of force axle 9, arm of force bearing housing 10, sensor top Plate 29, sensor top 30, pressure sensor 31, sensor fixing bolt 32, arm of force gag lever post 33；

Wherein, the front end sleeve of the arm of force 8 is fixed on arm of force axle 9 with arm of force axle 9 with flat key, and the two of arm of force bearing housing 10 Side riser is provided with bearing, the left end insertion left side bearing of arm of force axle 9, and the right-hand member of arm of force axle 9 is stretched out in power through right side bearing The right side of arm axle bearing block 10；

Wherein, the upper and lower ends of pressure sensor 31 are all formed with screw, the upper end of pressure sensor 31 sensor fixing bolt 32 are fixed on the rear end of the arm of force 8, and lower end withstands on sensor top plate 29, sensed equipped with sensor top 30, sensor top 30 Device top plate 29 is fixed by bolts to the upper end of post 27, the pressure size suffered by pressure sensor 31 and the center of pressure sensor 31 The product of line to the distance between center line of arm of force axle 9 is to be equal to the moment of torsion suffered by torsional specimen 15, during Accurate Calibration moment of torsion, is converted into turning round Square value is shown, while eliminates error caused by bearing minimal friction；

Wherein, the upper end of arm of force gag lever post 33 bolts with the lower vertical of the arm of force 8, and lower end passes through the hole of sensor top plate 29, Lower end is fixed with nut, and arm of force gag lever post 33 is cased with compression spring between nut and sensor top plate 29, upward to the arm of force 8 Restriction effect is played in rotation, and in addition to the arm of force 8 is upward out, the compression spring does not stress；

Chuck component 11 includes：Left chuck 12, chuck shrouding 13, chuck shrouding fixing screws 14, torsional specimen 15, right folder First 16, chuck shrouding axle 44；

Wherein, left chuck 12 is arranged on the right-hand member of arm of force axle 9, and right chuck 16 is arranged on the output shaft of worm reduction gear 42 On, arm of force axle 9, left chuck 12, right chuck 16, worm reduction gear 42 output shaft center line on same straight line, two The relative one end of chuck is formed with the square groove of centering installation torsional specimen 15, is also formed with the installation chuck shrouding 13 vertical with square groove Opening, the threaded portion that chuck shrouding axle 44 is carried by its own are arranged on the outer position of opening, and chuck shrouding 13 is by chuck Shrouding axle 44 is through in the opening of left chuck 12 and right chuck 16, can freely be rotated；

Wherein, the both ends of torsional specimen 15 be made with left chuck 12 and the square groove of right chuck 16 matching it is flat-shaped, by reverse try The flat-shaped termination of sample 15 is put into the square groove of left chuck 12 and right chuck 16, shuts chuck shrouding 13, is tightened chuck shrouding and is fixed Screw 14, just complete the clamping to torsional specimen 15；

Torsion angle measurement assembly 18 includes：Corner line wheel 17, encoder line wheel 19, encoder seat 34, rotary encoder 35, Line wheel coiling 36；

Wherein, corner line wheel 17 is enclosed on the right-hand member of right chuck 16, is fixed with screw and right chuck 16, the lower end of encoder seat 34 The suitable position below of seat beam 5 is fixed on, upper end is equipped with rotary encoder 35, and the rotating shaft of rotary encoder 35 is stretched out in encoder On the right side of seat 34, encoder line wheel 19 is fixed with rotating shaft, closing is wound with the wire casing of corner line wheel 17 and encoder line wheel 19 Line wheel coiling 36, the wire casing diameter of two line wheels is equal, and the torsion angle of transmission is also equal, is equal to the phase at the both ends of torsional specimen 15 To torsion angle；

As preferred structure, display record component 45 includes：Torsion testing machine digital display Acquisition Instrument 46, electronic computer main frame 47th, liquid crystal display 48, keyboard 49, mouse 50, printer 51；

Wherein, the internal circuit of torsion testing machine digital display Acquisition Instrument 46 connection capture card and some electronic components, and be equipped with Acquisition software；

Wherein, the front panel of torsion testing machine digital display Acquisition Instrument 46 has the window of upper and lower two big numerical monitor torque value, on Window shows maximum, and can peak value retain, lower window shows instantaneous value, has " clearing ", RESET two below lower window Button, " clearing " button is pressed, instantaneous value shows " 0 ", and by the Reset button, peak value is shown " 0 "；

Wherein, the rear board of torsion testing machine digital display Acquisition Instrument 46 is provided with 220V power supplys, sensor, encoder, computer Four sockets of data wire, it is respectively intended to connect 220V power supplys, pressure sensor 31, rotary encoder 35, electronic computer main frame 47, it is also equipped with a power switch button；

Wherein, the upper lid of torsion testing machine digital display Acquisition Instrument 46 is opened, the plug of panel data line is pulled up from socket, The connection plug of demarcation button panel is inserted, demarcation state connecting plug has been connected with wire jumper, state is demarcated into moment of torsion, on a left side Standard torquemeter is installed between chuck 12 and right chuck 16, the button on operation demarcation button panel and testing machine is done demarcation plus Carry, can be to the torque value Accurate Calibration for showing, recording, measuring state will be reset into by demarcating after terminating, and load onto torsion testing machine number The upper lid of aobvious Acquisition Instrument 46；

Wherein, torsion test special-purpose software is installed on electronic computer main frame 47, built on the desktop of liquid crystal display 48 Vertical to have software link icon, before loading experiment starts, mouse 50 double-clicks software link icon, pop-up display circle of liquid crystal display 48 Face, the interface left side are a row toolbars, account for 1/6th of interface, remainder is Drawing zone；

Wherein, the toolbar at the pop-up display interface of liquid crystal display 48 is successively from top to bottom：Communication setting（Provided with port With baud rate input port）, " opening serial ports " and " closing serial ports " switching push button, parameter setting（It is defeated provided with specimen finish and gauge length Entrance）, Experiment name input port, curve manipulation（Provided with preservation curve, printing curve button）, " having yield point experiment " and " nothing Yield point is tested " switching push button；

Wherein, the Drawing zone at the pop-up display interface of liquid crystal display 48 at " torque-twist curve " and " can be cut and answer again Two interfaces of power-shear strain curve " switch mutually, and switching push button is initially located in " torque-twist curve " boundary in the upper left corner Face, abscissa represent torsion angle, and ordinate represents moment of torsion, are switched to " shearing stress-shear strain curve " interface, and abscissa represents to cut Strain, ordinate represent shearing stress；

Wherein, torsion testing machine digital display Acquisition Instrument 46 by from pressure sensing 31 and rotary encoder 35 gather come moment of torsion and Angle signal is reversed by processing, instant torque value and maximum torque are shown on front panel window, while signal is passed to Electronic computer main frame 47, liquid crystal display 48 eject display interface toolbar in keyboard 49 input Experiment name, The diameter and gauge length of torsional specimen 15, the relevant button on the operation instrument column of mouse 50, so that it may in display circle of liquid crystal display 48 Preferable moment of torsion-the twist diagram of iso-surface patch, there is the Experiment name of input among curve map top, and loading terminates, had Operation is closed, yield point moment of torsion, peak torque can be shown, and is recorded on the graph, curve map can use printer 51 immediately Printing, can also be stored on electronic computer main frame 47 and print at any time；

Wherein, the torsion test special-purpose software that electronic computer main frame 47 is installed, each moment torsion examination can also be calculated The shearing stress put in the cross-sectional circumferential of sample 15 and shear strain, and draw the shearing stress put in the cross-sectional circumferential of torsional specimen 15-cut Strain curve figure, yield point shearing stress and maximum shear stress are calculated, are switched to " shearing stress-shear strain curve " interface, you can It has been shown that, record, preserve and print.

It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe Know professional and technical personnel do not departing from the range of technical solutions of the utility model, when the technology contents using the disclosure above Make a little change or be modified to the equivalent embodiment of equivalent variations, as long as being without departing from technical solutions of the utility model Hold, according to the technical essence of the utility model to any simple modification, equivalent change and modification made for any of the above embodiments, still Belong in the range of technical solutions of the utility model.

Claims (4)

1. digital display torsion testing machine is used in one kind teaching, including：Frame（1）, speed change charging assembly（20）, torque measurement component（7）、 Chuck component（11）, torsion angle measurement assembly（18）, display record component（45）；

It is characterized in that：

Described frame（1）Including：Left base（2）, left column（3）, transverse connecting pipe（4）, seat beam（5）, left seat board（6）, it is right Seat board（24）, right column（25）, right base（26）, post（27）, needle beam（28）；

Wherein, left column（3）, seat beam（5）, right column（25）It is made of circular bar square hollow section steel, left base（2）, right base （26）, post（27）, needle beam（28）It is made of channel-section steel, transverse connecting pipe（4）For round steel pipe, each part is firmly welded one Rise.

2. digital display torsion testing machine is used in a kind of teaching according to claim 1, it is characterised in that：

Described speed change charging assembly（20）Including：Two-direction switch（21）, speed regulator（22）, speed regulator seat（23）, variable speed electric motors, particularly （37）, variable speed electric motors, particularly special reduction gear（38）, right angle turn plate（39）, variable speed electric motors, particularly seat（40）, universal coupling（41）, worm gear subtracts Fast machine（42）, handwheel（43）；

Wherein, worm reduction gear（42）Gearratio 1：40~1：55, output torque is not less than 150Nm, is fixed by bolts to the right side Seat board（24）On, output shaft is located at lower left, and input shaft is dual input shaft, above, and preceding input is provided with handwheel（43）, Input universal coupling afterwards（41）With variable speed electric motors, particularly special reduction gear（38）Output shaft be coupled；

Wherein, handwheel（43）It is entity, surfacing, wheel outer rim is without corner angle, clamping torsional specimen in addition to mounting hole（15） When microcall, size determines according to convenient manual operation；

Wherein, variable speed electric motors, particularly（37）Use 220V individual event power supplys, 150 ~ 250W of power, variable speed electric motors, particularly special reduction gear（38）Subtract Fast ratio 1：8~1：12 or so, variable speed electric motors, particularly（37）Output shaft and variable speed electric motors, particularly special reduction gear（38）Input shaft be docked at one Rise, variable speed electric motors, particularly（37）With variable speed electric motors, particularly special reduction gear（38）Body match and be fixed together, front end and right angle turn plate （39）Vertical plane fix, right angle turns plate（39）Plane of structure and variable speed electric motors, particularly seat（40）Upper cross plate be connected with bolt, speed change electricity Support（40）Riser lower end be fixed on right seat board（24）Correct position below；

Wherein, two-direction switch（21）, speed regulator（22）It is fixed on speed regulator seat（23）On, speed regulator（22）Speed adjustable range 90~ 1400rpm, speed regulator seat（23）Lower end be fixed on right seat board（24）Right side centre position, two-direction switch（21）With speed regulator （22）There are three wires to be connected, speed regulator（22）With variable speed electric motors, particularly（37）It is connected with docking cable, speed regulator（22）It is connected to again 220V power line.

3. digital display torsion testing machine is used in a kind of teaching according to claim 1 or 2, it is characterised in that：

Described torque measurement component（7）Including：The arm of force（8）, arm of force axle（9）, arm of force bearing housing（10）, sensor top plate （29）, sensor top（30）, pressure sensor (31), sensor fixing bolt (32), arm of force gag lever post (33)；

Wherein, the front end sleeve of the arm of force (8) is fixed, arm of force bearing housing (10) on arm of force axle (9) with arm of force axle (9) with flat key Both sides riser bearing is installed, the left end insertion left side bearing of arm of force axle (9), the right-hand member of arm of force axle (9) passes through right side bearing Stretch out on the right side of arm of force bearing housing (10)；

Wherein, pressure sensor（31）Upper and lower ends are all formed with screw, pressure sensor (31) upper end sensor fixing bolt (32) rear end of the arm of force (8) is fixed on, lower end withstands on sensor top plate equipped with sensor top (30), sensor top (30) (29) on, sensor top plate (29) is fixed by bolts to post (27) upper end, the pressure size suffered by pressure sensor (31) Product with pressure sensor (31) center line to arm of force axle (9) distance between center line is to be equal to the torsion suffered by torsional specimen (15) Square；

Wherein, the upper end of arm of force gag lever post (33) bolts with the arm of force (8) lower vertical, and lower end passes through sensor top plate (29) Hole, lower end are fixed with nut, and arm of force gag lever post (33) is cased with compression spring between nut and sensor top plate (29), to power Arm (8) is rotated up playing restriction effect, and in addition to the arm of force (8) is upward out, the compression spring does not stress；

Described chuck component（11）Including：Left chuck（12）, chuck shrouding（13）, chuck shrouding fixing screws（14）, reverse Sample（15）, right chuck（16）, chuck shrouding axle（44）；

Wherein, left chuck（12）Installed in arm of force axle（9）Right-hand member, right chuck（16）Installed in worm reduction gear（42）Output On axle, arm of force axle（9）, left chuck（12）, right chuck（16）, worm reduction gear（42）Output shaft center line it is straight in same On line, two relative one end of chuck are formed with centering installation torsional specimen（15）Square groove, be also formed with the installation vertical with square groove Chuck shrouding（13）Opening, chuck shrouding axle（44）The threaded portion carried by its own is arranged on the outer position of opening, Chuck shrouding（13）By chuck shrouding axle（44）It is through left chuck（12）With right chuck（16）Opening in, can freely rotate；

Wherein, torsional specimen（15）Both ends be made and left chuck（12）With right chuck（16）Square groove matches flat-shaped；

Described torsion angle measurement assembly（18）Including：Corner line wheel（17）, encoder line wheel（19）, encoder seat（34）, rotation Turn encoder（35）, line wheel coiling（36）；

Wherein, corner line wheel（17）It is enclosed on right chuck（16）Right-hand member, with screw and right chuck（16）It is fixed, encoder seat（34） Lower end is fixed on seat beam（5）Suitable position below, upper end are equipped with rotary encoder（35）, rotary encoder（35）Rotating shaft stretch Go out in encoder seat（34）Right side, encoder line wheel is fixed with rotating shaft（19）, in corner line wheel（17）With encoder line wheel （19）Wire casing on be wound with the line wheel coiling of closing（36）, the wire casing diameter of two line wheels is equal, and the torsion angle of transmission is also equal, all Equal to torsional specimen（15）The relative torsional angle at both ends.

4. digital display torsion testing machine is used in a kind of teaching according to claim 1, it is characterised in that：

The display record component told（45）Including：Torsion testing machine digital display Acquisition Instrument（46）, electronic computer main frame（47）, liquid Crystal display（48）, keyboard（49）, mouse (50), printer (51）；

Wherein, torsion testing machine digital display Acquisition Instrument（46）Internal circuit connects capture card and some electronic components, and is equipped with and adopts Collect software；

Wherein, torsion testing machine digital display Acquisition Instrument（46）Front panel has the window of upper and lower two big numerical monitor torque value, upper window Mouthful show maximum, and can peak value retain, lower window shows instantaneous value, has " clearing ", RESET two to press below lower window Button；

Wherein, torsion testing machine digital display Acquisition Instrument（46）Rear board is provided with 220V power supplys, sensor, encoder, computer number According to four sockets of line, it is respectively intended to connect 220V power supplys, pressure sensor（31）, rotary encoder（35）, electronic computer master Machine（47）, it is also equipped with a power switch button；

Wherein, electronic computer main frame（47）On torsion test special-purpose software, liquid crystal display are installed（48）Desktop on build It is vertical to have software link icon.