CN102288914A - TDOF (three degree of freedom) dynamic and static loading integrated testing apparatus for linear motor - Google Patents

TDOF (three degree of freedom) dynamic and static loading integrated testing apparatus for linear motor Download PDF

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Publication number
CN102288914A
CN102288914A CN2011102571352A CN201110257135A CN102288914A CN 102288914 A CN102288914 A CN 102288914A CN 2011102571352 A CN2011102571352 A CN 2011102571352A CN 201110257135 A CN201110257135 A CN 201110257135A CN 102288914 A CN102288914 A CN 102288914A
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China
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load maintainer
contactless
contactless load
beaer
axis
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CN2011102571352A
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CN102288914B (en
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杨兆军
呼烨
陈菲
李国发
王寅凯
许彬彬
郝庆波
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Jilin University
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Jilin University
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Abstract

The invention discloses a TDOF (three degree of freedom) dynamic and static loading integrated testing apparatus for a linear motor, which comprises six non-contact loading mechanisms, a testing platform, two linear guide rails, a loading supporting mechanism, two non-contact loading mechanism loaded bodies and two contact loading mechanisms. The two non-contact loading mechanism loaded bodies are symmetrically arranged in parallel at both sides of the top end face of a middle platform of the testing platform along the Y-axis direction. The two linear guide rails are symmetrically arranged in parallel on the top end face of the middle platform between the two non-contact loading mechanism loaded bodies. Four non-contact loading mechanisms are arranged on the upper surface and the bottom surface at both ends of a beam in the loading supporting mechanism. Two non-contact loading mechanisms are arranged on two end faces of a base in the loading supporting mechanism, and the two end faces are vertical to the X axis. Linear guide rail slots at both sides of the base in the loading supporting mechanism are in contact connection with the two linear guide rails. Both the ends of the beam in the loading supporting mechanism are in clearance fit with rectangular through holes on the two non-contact loading mechanism loaded bodies.

Description

The static combined test apparatus that loads of linear electric motors three-freedom moving
Technical field
The present invention relates to a kind of load testing machine of estimating the linear electric motors reliability, more particularly, the present invention relates to the static combined test apparatus that loads of a kind of linear electric motors three-freedom moving.
Background technology
Linear electric motors are of a great variety at present, are widely used in industries such as numerical control equipment, industrial automation, track traffic.The performance test of linear electric motors reliability and test be put goods on the market and use before the link that must carry out, the basis of reliability testing and test then is to reduce the real working condition of linear electric motors, simulates the load condition under its duty.This for Key Performance Indicator of determining linear motor driving, point out that the application level of equipping the defective of existence and improving equipment has significance.
The kinematic system comprehensive test device of the linear electric motors that existing typical proving installation designs for Tsing-Hua University (application publication number: CN 101980037A, Shen Qing Publication day: 2011.02.23, application number: 201010538340.1, the applying date: 2011.11.08).The bidirectional wiring rope pulley haulage gear symmetry of this device is installed in the outside that drives linear induction motor system and linear electric motors to be measured, and bidirectional wiring rope pulley haulage gear connects driving linear induction motor system secondary and the 3rd pulling force sensor and the 4th pulling force sensor respectively; The 3rd pulling force sensor is connected the secondary two ends of linear electric motors to be measured respectively with the 4th pulling force sensor, the controlling and driving linear induction motor system, drive linear electric motors operation to be measured, perhaps apply load force, by the stress of the 3rd pulling force sensor and the 4th pulling force sensor record motor for linear electric motors to be measured.
There is following several problem in this device:
1. linear electric motors are when carrying out the direction of motion loading, mechanism's complexity, reliability are not high, simultaneously because adopt the wire rope sealing to be connected in loading section and part to be tested, the adjusting of wire rope degree of tightness is very crucial, bring many uncertain factors to correlation test, thereby cause test reaction slow, and be not suitable for the test under the tight requirement condition of high standard;
2. only can load or detect, non-direction of motion not loaded, fail effectively to simulate the motion conditions of linear electric motors under real working condition direction of motion.
Summary of the invention
Technical matters to be solved by this invention is to have overcome the problem that prior art exists, and provides a kind of linear electric motors three-freedom moving the static combined test apparatus that loads.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: the static combined test apparatus that loads of described linear electric motors three-freedom moving comprises the first contact load maintainer, test platform, the first contactless load maintainer beaer, the line slideway that two-strip structure is identical, the X-direction first contactless load maintainer, the Z-direction first contactless load maintainer of going up, loading support mechanism, the Z-direction second contactless load maintainer of going up, the second contact load maintainer, the second contactless load maintainer beaer, the X-direction second contactless load maintainer, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down.Wherein: described test platform is made up of left side platform, belly board and dextral platform; Described loading support mechanism is made up of crossbeam and base.
One end of the first contact load maintainer is installed on the top end face of left side platform, and an end of the second contact load maintainer is installed on the top end face of dextral platform.The first contactless load maintainer beaer and the second contactless load maintainer beaer be along the parallel both sides that are installed in the belly board top end face symmetrically of Y direction, and the line slideway that two-strip structure is identical is parallel to be installed on the top end face of the belly board between the first contactless load maintainer beaer and the second contactless load maintainer beaer symmetrically.The contact of base in the loading support mechanism line slideway identical with two-strip structure connects, and the X-direction first contactless load maintainer and the X-direction second contactless load maintainer are installed on 2 T font end faces of vertical X-axis of base.Z-direction first contactless upward load maintainer and the Z-direction first contactless load maintainer down are installed on the upper surface and bottom surface of crossbeam one end, Z-direction second contactless upward load maintainer and the Z-direction second contactless load maintainer down are installed on the upper surface and bottom surface of the crossbeam other end, and the Z-direction first contactless load maintainer of going up is installed, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer of going up, Z-direction second contactless crossbeam two ends of load maintainer down and the rectangular through-hole clearance fit on the first contactless load maintainer beaer and the second contactless load maintainer beaer.Fixedly connected perpendicular to the left side of Y-axis in the other end of the first contact load maintainer and the crossbeam, fixedly connected perpendicular to the right side of Y-axis in the other end of the second contact load maintainer and the crossbeam.
The first contact load maintainer described in the technical scheme and the second contact load maintainer are identical in structure two covering devices, and the first contact load maintainer comprises contact load maintainer force transducer, wire rope, roller, torque sensor, shaft coupling and torque motor.The output terminal of torque motor is connected with the input end of torque sensor by shaft coupling, the output terminal of torque sensor is fixedlyed connected with the input end of the roller shaft that is set with roller, and the other end that is set with the roller shaft of roller is supported and fixed on the platform of left side by supporting seat.One end of wire rope is connected in roller, and the other end of wire rope is fixedlyed connected with an end of contact load maintainer force transducer, and the other end of contact load maintainer force transducer is fixedlyed connected with the left side perpendicular to Y-axis of loading support mechanism middle cross beam; The described Z-direction first contactless upward load maintainer, the Z-direction first contactless load maintainer down, the Z-direction second contactless upward load maintainer and the Z-direction second contactless load maintainer down are identical in structure quadruplet devices.The Z-direction first contactless load maintainer of going up is made up of first sensor on first magnechuck on the Z axle and the Z axle.Adopt bolt first magnechuck on the Z axle to be fixedlyed connected with first sensor on the Z axle and both axis of rotation conllinear, adopt bolt both to be fixed on the last plane perpendicular to the Z axle of crossbeam again, an end of first sensor contacts with the last plane perpendicular to the Z axle of crossbeam on the Z axle.X-direction first contactless load maintainer and the X-direction second contactless load maintainer are identical in structure two covering devices.The X-direction first contactless load maintainer is made up of X-axis first sensor and X-axis first magnechuck.Adopt bolt the X-axis first sensor to be fixedlyed connected with X-axis first magnechuck and both axis of rotation conllinear, adopt bolt both to be fixed on the T shape end face perpendicular to the X-axis negative direction of base again, an end of X-axis first sensor directly contacts with the T shape end face perpendicular to the X-axis negative direction of base; The described first contactless load maintainer beaer and the second contactless load maintainer beaer are identical in structure two covering devices.The first contactless load maintainer beaer is the structural member of a rectangle plane frame-type of being made by permeability magnetic material.The bottom surface that upper surface contact in the first contactless load maintainer beaer and test platform is connected is perpendicular to the Z axle, it is the rectangular through-hole of clearance fit with Z-direction first contactless upward load maintainer and the Z-direction first contactless load maintainer down that the centre position of the first contactless load maintainer beaer is provided with one, and the gap is t 1, value is 0＜t 1＜1mm, the end face of rectangular through-hole and the bottom surface of rectangular through-hole are rectangle planes, the end face of rectangular through-hole and the bottom surface of rectangular through-hole are perpendicular to the Z axle.The first contactless load maintainer beaer inboard with the bottom surface angle be 90 ° be rectangle plane promptly perpendicular to the side of X-axis, be clearance fit between this rectangular side plane and the X-direction first contactless load maintainer, the gap is h, value is 0＜h＜1mm; The described X-direction first contactless load maintainer, the X-direction second contactless load maintainer, Z-direction first contactless load maintainer, the Z-direction second contactless upward load maintainer, the Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down gone up all comprise magnechuck and force transducer.Described magnechuck replaces with the gas injection equipment that adopts gas to spray load mode.Described gas injection equipment comprises gas injection equipment end cap, gas injection equipment O-ring seal and gas injection equipment base, and they stack together and adopt bolted.Gas injection equipment base is the basic components of gas injection equipment, gas injection equipment base is a square or rectangular configuration part, the center of gas injection equipment base upper surface is provided with a square groove or rectangular channel, be evenly equipped with 8 tapped blind holes around square groove or the rectangular channel, center at the bottom of the square groove or at the bottom of the rectangular channel is provided with a vertical circular blind hole B, the transverse circular blind hole A that vertical circular blind hole B and gas injection equipment base side are provided with is connected, the axis of rotation that is vertical circular blind hole B and transverse circular blind hole A intersects vertically, and vertical circular blind hole B is identical with the area of transverse circular blind hole A.Gas injection equipment O-ring seal is a square or rectangle hollow leaf seal, is evenly equipped with 8 through holes that pass screw on the gas injection equipment O-ring seal.Gas injection equipment end cap is a square or rectangular configuration part, gas injection equipment end cap is provided with vertical manhole C, vertically manhole C becomes the two-dimensional matrix formula of J * K to distribute on gas injection equipment end cap, is evenly equipped with 8 sunk screw through holes around J * K the vertical manhole C; The described X-direction first contactless load maintainer, the X-direction second contactless load maintainer, the Z-direction first contactless magnechuck of going up in load maintainer, the Z-direction second contactless upward load maintainer, the Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down replace with the liquid jet mechanism that adopts liquid to spray load mode.Described liquid jet mechanism comprises liquid jet mechanism end cap, liquid jet mechanism O-ring seal and liquid jet mechanism base, and they stack together and adopt bolted.The liquid jet mechanism base is a square or rectangular configuration part, the center of liquid jet mechanism base upper surface is provided with No. 1 square groove or rectangular channel, be evenly equipped with 8 tapped blind holes around square groove or the rectangular channel, at the bottom of No. 1 square groove or the center at the bottom of the rectangular channel is provided with a vertical circular blind hole E, the transverse circular blind hole F of the constant area that vertical circular blind hole E and liquid jet mechanism base side are provided with is connected, the axis of rotation of vertical circular blind hole E and transverse circular blind hole F intersects vertically, and vertical circular blind hole E is identical with the area of transverse circular blind hole F.The liquid jet mechanism O-ring seal is a square or rectangle hollow leaf seal, is evenly equipped with 8 through holes that pass screw on the liquid jet mechanism O-ring seal.The liquid jet mechanism end cap is a square or rectangular configuration part, the center of liquid jet mechanism end cap upper surface is provided with No. 2 square groove or rectangular channel, the bottom land of No. 2 square groove or rectangular channel is provided with vertical manhole G, vertically manhole G becomes the two-dimensional matrix formula of J * K to distribute on the liquid jet mechanism end cap, is evenly equipped with 8 sunk screw through holes around No. 2 square groove.
The static combined test apparatus that loads of a kind of screw pair three-freedom moving comprises the first contact load maintainer, test platform, the first contactless load maintainer beaer, the line slideway that two-strip structure is identical, the X-direction first contactless load maintainer, the Z-direction first contactless load maintainer of going up, loading support mechanism, the Z-direction second contactless load maintainer of going up, the second contact load maintainer, the second contactless load maintainer beaer, the X-direction second contactless load maintainer, the Z-direction first contactless load maintainer down, the Z-direction second contactless load maintainer down, electric rotating machine, the first leading screw supporting seat, the feed screw nut's seat and the second leading screw supporting seat.Wherein: described test platform is made up of left side platform, belly board and dextral platform; Described loading support mechanism is made up of crossbeam and base.
One end of the first contact load maintainer is installed on the top end face of left side platform, and an end of the second contact load maintainer is installed on the top end face of dextral platform.The first contactless load maintainer beaer and the second contactless load maintainer beaer be along the parallel both sides that are installed in the belly board top end face symmetrically of Y direction, and the line slideway that two-strip structure is identical is parallel to be installed on the top end face of the belly board between the first contactless load maintainer beaer and the second contactless load maintainer beaer symmetrically.The contact of base in the loading support mechanism line slideway identical with two-strip structure connects, and the X-direction first contactless load maintainer and the X-direction second contactless load maintainer are installed on 2 T font end faces of vertical X-axis of base.Z-direction first contactless upward load maintainer and the Z-direction first contactless load maintainer down are installed on the upper surface and bottom surface of crossbeam one end, Z-direction second contactless upward load maintainer and the Z-direction second contactless load maintainer down are installed on the upper surface and bottom surface of the crossbeam other end, and the Z-direction first contactless load maintainer of going up is installed, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer of going up, Z-direction second contactless crossbeam two ends of load maintainer down and the rectangular through-hole clearance fit on the first contactless load maintainer beaer and the second contactless load maintainer beaer.Fixedly connected perpendicular to the left side of Y-axis in the other end of the first contact load maintainer and the crossbeam, fixedly connected perpendicular to the right side of Y-axis in the other end of the second contact load maintainer and the crossbeam.Electric rotating machine is fixed on the right-hand member of the belly board between the identical line slideway of two-strip structure, and the line slideway that the axis of rotation of electric rotating machine output shaft is identical with two-strip structure is parallel, and an end of the output terminal of electric rotating machine and shaft coupling is connected.The first leading screw supporting seat and the second leading screw supporting seat are fixed on the top end face of belly board of test platform, the first leading screw supporting seat and the second leading screw supporting seat are positioned at the left and right sides of loading support mechanism, the axis of rotation of the through hole of the leading screw that the first leading screw supporting seat and the installation of second leading screw supporting seat upper end are tested and the axis of rotation conllinear of electric rotating machine output shaft.The top of feed screw nut's seat is fixed on the bottom surface of loading support mechanism, and tested feed screw nut's the axis of rotation of through hole and the axis of rotation conllinear of electric rotating machine output shaft are installed on feed screw nut's seat.
Compared with prior art the invention has the beneficial effects as follows:
1. linear electric motors three-freedom moving of the present invention is static to load combined test apparatus and can effectively simulate linear electric motors suffered various load conditions in real working condition, for the Key Performance Indicator of determining linear motor driving, point out that the application level of equipping the defective of existence and improving equipment established solid foundation;
2. the static loading of linear electric motors three-freedom moving of the present invention combined test apparatus adopts contactless load mode that linear electric motors are carried out non-direction of motion and loads, get rid of contact and loaded the drawback brought (as can not test for a long time, movement velocity is restricted and be prone to phenomenon such as wearing and tearing), improved measuring accuracy, reliability and serviceable life;
3. the static combined test apparatus that loads of linear electric motors three-freedom moving of the present invention adopts trailing type contact loading that linear electric motors are carried out the loading of direction of motion, can accurately carry out the loading of constant duty and varying load to it, improve measuring accuracy, reliability and serviceable life, can also detect in the real-time thrust of bearing under the situation of variable load simultaneously;
4. the static combined test apparatus that loads of linear electric motors three-freedom moving of the present invention is simple in structure, and debugging is convenient, and is cheap for manufacturing cost, is convenient to operation.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is the static schematic block diagram that loads combined test apparatus in the loading of linear electric motors direction of motion of linear electric motors three-freedom moving of the present invention;
Fig. 2 is the static schematic block diagram that loads combined test apparatus in the non-direction of motion loading of linear electric motors of linear electric motors three-freedom moving of the present invention;
Fig. 3 is the static axonometric projection graph that loads combined test apparatus structure composition of linear electric motors three-freedom moving of the present invention;
Fig. 4 is the static axonometric projection graph that loads test platform in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Fig. 5 is the static breakdown axonometric projection graph that loads loading support mechanism structure composition in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Fig. 6 is the static axonometric projection graph that loads the first contactless load maintainer beaer in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Fig. 7 is the static front view that loads X-direction load maintainer structure composition in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Fig. 8 is the static front view that loads Z-direction load maintainer structure composition in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Fig. 9 is the static axonometric projection graph that loads the first contact load maintainer in the combined test apparatus of linear electric motors three-freedom moving of the present invention;
Figure 10 is a contactless load maintainer gas injection equipment breakdown axonometric projection graph in the static loading of the linear electric motors three-freedom moving of the present invention combined test apparatus;
Figure 11 is a contactless load maintainer liquid jet mechanism breakdown axonometric projection graph in the static loading of the linear electric motors three-freedom moving of the present invention combined test apparatus;
Figure 12 is that ball-screw is the axonometric projection graph of the structure composition of tested object in the static loading of the linear electric motors three-freedom moving of the present invention combined test apparatus;
Among the figure: 1. the first contact load maintainer, 2. test platform, 3. the first contactless load maintainer beaer, 4. line slideway, the 5.X direction of principal axis first contactless load maintainer, the 6.Z direction of principal axis first contactless load maintainer of going up, 7. loading support mechanism, 8.Z direction of principal axis second contactless load maintainer, the 9. second contact load maintainer, the 10. second contactless load maintainer beaer gone up, 11.X the direction of principal axis second contactless load maintainer, 12. base, 13. crossbeams, 14.X axle first sensor, 15.X axle first magnechuck, 16.Z first sensor on the axle, first magnechuck on the 17.Z axle, first sensor under the 18.Z axle, 19.Z axle is first magnechuck down, 20. contact load maintainer force transducer, 21. wire rope, 22. supporting seats, 23. roller, 24. torque sensor, 25. shaft couplings, 26. torque motors, 27. gas injection equipment base, 28. gas injection equipment sealed picture, 29. gas injection equipment end caps, 30. liquid jet mechanism bases, 31. liquid jet mechanism sealed picture, 32. the liquid jet mechanism end cap, 33. electric rotating machines, 34. first leading screw supporting seats, 35. feed screw nut, 36. feed screw nut's seat, 37. leading screws, 38. second leading screw supporting seats.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 3, the static loading of linear electric motors three-freedom moving of the present invention combined test apparatus belongs to a kind of rig for testing in the load test field of estimating the linear electric motors reliability, its objective is to solve the loading problem of linear electric motors under the simulation actual condition.The static combined test apparatus that loads of described linear electric motors three-freedom moving comprises the first contact load maintainer 1, test platform 2, the first contactless load maintainer beaer 3, the line slideway 4 that two-strip structure is identical, the X-direction first contactless load maintainer 5, the Z-direction first contactless load maintainer 6 of going up, loading support mechanism 7, the Z-direction second contactless load maintainer 8 of going up, the second contact load maintainer 9, the second contactless load maintainer beaer 10, the X-direction second contactless load maintainer 11, the Z-direction first contactless load maintainer down, Z-direction second contactless load maintainer and the electric-control system down.Wherein: Z-direction first is contactless to go up that load maintainer 6, the Z-direction first contactless load maintainer down, Z-direction second are contactless to be gone up load maintainer 8 and Z-direction second contactless the load maintainer structure is identical down; The X-direction first contactless load maintainer 5 is identical with X-direction second contactless load maintainer 11 structures.
Consult Fig. 4, described test platform 2 is installed on the ground along parallel bottom surface with upper surface in that other relevant parts are installed perpendicular to the upper surface upper edge Y direction of Z axle.We can say that whole test platform 2 is made up of left side platform, belly board and 3 parts of dextral platform along Y direction.The top end face of left side platform is fixedlyed connected with an end of the first contact load maintainer 1, the top end face of dextral platform is fixedlyed connected with an end of the second contact load maintainer 9, (with respect to belly board along the Y direction plane of symmetry) is equipped with the first contactless load maintainer beaer 3 and the second contactless load maintainer beaer 10 on the symmetria bilateralis of belly board top end face ground along Y direction, the first contactless load maintainer beaer 3 is vertical with X-direction with the second contactless load maintainer beaer 10, on the belly board top end face and between the first contactless load maintainer beaer 3 and the second contactless load maintainer beaer 10 two line slideways 4 that the structure that is parallel to each other is identical are being installed symmetrically, article two, the line slideway 4 that the structure that is parallel to each other is identical is vertical with X-direction, and the stator of tested linear electric motors is installed on the top end face of the belly board between the identical line slideway 4 of two structures that are parallel to each other.Require to install mating surface and have enough flatnesses and roughness, the demand when installing with operate as normal to satisfy.
Consult Fig. 5, described loading support mechanism 7 by crossbeam 13 and base about in the of 12 two parts form.
Described base 12 is regarded T font structure as from X-direction, 2 T font end faces of base 12 are vertical with X-axis, it is X-direction first contactless load maintainer 5 and the X-direction second contactless load maintainer 11 along the contactless load maintainer that X-axis loads that 2 T font end faces of base 12 are used to install generation, requirement is when carrying out load test, and base 12 is t along the unidirectional largest deformation amount of X-axis 12, and 0＜t 12＜1mm is to satisfy the demand that dynamically accurately loads.The both sides of base 12 bottom surfaces are provided with the equipped identical line slideway groove of two structures that are parallel to each other of line slideways identical with two structures that are parallel to each other 4, and the line slideway groove that two structures that are parallel to each other are identical is vertical with X-direction.Article two, the bottom surface between the line slideway groove that the structure that is parallel to each other is identical is used to adopt bolt to connect the mover of linear electric motors.
Described crossbeam 13 is prolate side's body structure spare, in the crossbeam 13 with the vertical bottom surface of Z-direction and base 12 in fixedly connected formation loading support mechanism 7 with the vertical upper surface of Z-direction.It is Z-direction first contactless load maintainer 6 and the Z-direction second contactless load maintainer 8 of going up gone up that the contactless load maintainer that generation loads along Z-direction is installed on the upper surface at crossbeam 13 two ends, contactless load maintainer that generation loads along Z-direction be installed on the bottom surface at crossbeam 13 two ends be the Z-direction first contactless load maintainer down and Z-direction second contactless under load maintainer, Z-direction first contactless load maintainer 6 and the Z-direction first contactless axis of rotation conllinear of load maintainer down gone up, Z-direction second contactless load maintainer 8 and the Z-direction second contactless axis of rotation conllinear of load maintainer down gone up, require simultaneously when carrying out load test, crossbeam 13 is t along the unidirectional largest deformation amount of Z axle 13, and 0＜t 13＜1mm is to satisfy the demand that dynamically accurately loads.
Consult Fig. 6, contactless load maintainer beaer 3 has two the covers i.e. first contactless load maintainer beaer 3 and the second contactless load maintainer beaer 10 static loading of linear electric motors three-freedom moving of the present invention in the combined test apparatus, the structure and the function of the first contactless load maintainer beaer 3 and the second contactless load maintainer beaer 10 are identical, along on the upper surface that is installed in test platform 2 of Y direction symmetry.Be elaborated with regard to the first contactless load maintainer beaer 3 below, the second contactless load maintainer beaer 10 repeats no more.
The first contactless load maintainer beaer 3 is rectangle plane tower structure spares, and the centre of the first contactless load maintainer beaer 3 is provided with a rectangular through-hole, and the end face of rectangular through-hole and the bottom surface of rectangular through-hole are workplaces.The end face of rectangular through-hole and the bottom surface of rectangular through-hole are perpendicular to the Z axle, the end face of rectangular through-hole and the bottom surface of rectangular through-hole cooperate Z-direction first contactless upward load maintainer 6 and the Z-direction first contactless load maintainer work down, the Z-direction first contactless load maintainer 6 of going up carries out gapped moving back and forth with the Z-direction first contactless load maintainer down along the end face of rectangular through-hole and the bottom surface of rectangular through-hole, the bottom surface of considering the end face of the attractive force that produces when carrying out contactless load and rectangular through-hole and rectangular through-hole simultaneously is along the unidirectional largest deformation amount of Z axle, and therefore requiring the gap is t 2, value is 0＜t 2＜1, to satisfy the demand that dynamically accurately loads.Guarantee simultaneously when contactless load maintainer moves, farthest the clearance constant of the bottom surface of the end face of maintenance and rectangular through-hole and rectangular through-hole.The first contactless load maintainer beaer 3 is a magnetizer structure in the present invention, so as can with the magnechuck generation attractive force that cooperatively interacts.
The first contactless load maintainer beaer 3 is connected with the upper surface contact of test platform 2 perpendicular to the bottom surface of Z-direction.With the bottom surface angle be 90 ° be workplace promptly perpendicular to the long rectangle sides of X-axis positive dirction, cooperate X-direction first contactless load maintainer 5 or X-direction second contactless load maintainer 11 work, X-direction first contactless load maintainer 5 or the X-direction second contactless load maintainer 11 carry out gapped moving back and forth along this workplace, consider simultaneously the attractive force that produces when carrying out contactless load and workplace along the unidirectional largest deformation amount of X-axis, therefore requiring the gap is t 1, value is 0＜t 1＜1mm is to satisfy the demand that dynamically accurately loads.Guarantee simultaneously when the motion of contactless load maintainer, farthest keep and clearance constant perpendicular to the long rectangle workplace of X-axis positive dirction.
Contactless load maintainer described in the present invention comprises X-direction load maintainer and Z-direction load maintainer, and contactless load maintainer adopts electromagnetic principle, mainly is made up of magnechuck, controller and force transducer etc.Contactless load maintainer is respectively applied for X-direction and loads and the loading of Z axle positive dirction, the X-direction load maintainer comprises the contactless load maintainer 5 of X-direction first and the X-direction second contactless load maintainer 11 (along each cover of the positive negative direction of X-axis), the Z-direction load maintainer comprise along the Z-direction first of Z axle positive dirction contactless go up load maintainer 6 and Z-direction second contactless go up load maintainer 8 and along the Z-direction first contactless load maintainer down of Z axle negative direction and Z-direction second contactless under load maintainer.The structure model of X-direction load maintainer is identical, and the structure model of Z-direction load maintainer is identical; The specifications and models of X-direction load maintainer are identical or different with the specifications and models of Z-direction load maintainer as required.
Main technical requirements to sensor in the contactless load maintainer is:
1. radial sensor.
2. only require to record pulling force, promptly belong to pulling force sensor.
3. require fully loaded measurement of pulling force sensor to be out of shape less than 0.01mm.
4. the composition error scope of sensor: ± 0.05 (%R.O.).
5. the measurement range of sensor is: 0N～XN, and promptly minimum measured value is 0N, and greatest measurement is X N, and X is greater than user's the maximal value that will load, and leaves the needed safety coefficient of user.For example: user-defined safety coefficient is 150%, and needing the maximum load value is 2000N, and the range of this sensor of choosing is so: 0N～3000N.
The bolt hole that the bottom of this sensor is reserved by product is connected in loading support mechanism 7.The top of sensor is contacted with the bottom of magnechuck separately simultaneously, arrives closed-loop control, satisfies the demand that dynamically accurately loads.
Requirement to magnechuck in the contactless load maintainer that is provided by professional production producer is:
Under the relatively-stationary situation of magnechuck thickness, the length and the width of magnechuck are then claimed by the user, because the length of magnechuck and the size that width is positively correlated with the loading force that is produced are so the user selects voluntarily according to the size of loading force and makes up.
Magnechuck should be furnished with corresponding controller simultaneously simultaneously, and promptly the size of Control current reaches the purpose of control magnechuck loading force, and the precision of Control current is according to the precision decision of loading force that the user requires.
The major parameter of magnechuck:
1. maximum load power F Max
2. the precision α of control loaded
Maximum load power F wherein MaxBe positively correlated with the length and the width of magnechuck.
The bottom of magnechuck contacts with the top of force transducer, arrives closed-loop control, satisfies the demand that dynamically accurately loads.Be fastenedly connected by bolt hole and loading support mechanism 7 around the magnechuck.
Consult Fig. 7, the X-direction load maintainer comprises as previously mentioned: the X-direction first contactless load maintainer 5 and the X-direction second contactless load maintainer 11, their symmetries are installed on the two T shape end faces perpendicular to X-direction of base 12, because the X-direction first contactless load maintainer 5 is identical with the structural principle and the function of the X-direction second contactless load maintainer 11, it is the installation site difference, here only describe the X-direction first contactless load maintainer 5 in detail, the X-direction second contactless load maintainer 11 repeats no more.The X-direction first contactless load maintainer 5 is installed on the T shape end face perpendicular to the X-axis negative direction of the base 12 in the loading support mechanism 7, the X-direction first contactless load maintainer 5 mainly is made up of X-axis first sensor 14 and X-axis first magnechuck 15, X-axis first magnechuck 15 adopts bolt to link into an integrated entity with X-axis first sensor 14 and both axis of rotation conllinear, both adopt on the T shape end face perpendicular to the X-axis negative direction that is bolted to base 12 again, and an end of the X-axis first sensor 14 T shape end face perpendicular to the X-axis negative direction direct and base 12 contacts.X-axis first magnechuck 15 keeps gap h with the first contactless load maintainer beaer 3 when Y-axis is moved all the time, and 0＜h＜1mm is to satisfy the demand that dynamically accurately loads.
Consult Fig. 8, the Z-direction load maintainer comprises as previously mentioned: the Z-direction first contactless load maintainer 6 of going up, the Z-direction second contactless load maintainer 8 of going up, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down, Z-direction first contactless upward load maintainer 6 and Z-direction second contactless upward load maintainer 8 symmetries are installed on the two ends perpendicular to plane on the Z-direction of crossbeam 13, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer symmetry down are installed on the two ends perpendicular to the Z-direction lower plane of crossbeam 13, Z-direction first contactless load maintainer 6 and the Z-direction first contactless axis of rotation conllinear of load maintainer down gone up, Z-direction second contactless load maintainer 8 and the Z-direction second contactless axis of rotation conllinear of load maintainer down gone up, because the Z-direction first contactless load maintainer 6 of going up, the Z-direction second contactless load maintainer 8 of going up, the structural principle and the function of Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down are identical, it is the installation site difference, here only describe the Z-direction first contactless load maintainer 6 of going up in detail, the Z-direction second contactless load maintainer 8 of going up, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down repeat no more.Crossbeam 13 in the loading support mechanism 7 perpendicular to Z-direction first contactless load maintainer 6 and the Z-direction first contactless load maintainer down gone up is installed on plane on the Z-direction and the bottom surface, the Z-direction first contactless load maintainer 6 of going up mainly is made up of first magnechuck 17 on first sensor on the Z axle 16 and the Z axle, on the Z axle on first magnechuck 17 and the Z axle first sensor 16 adopt bolt to link into an integrated entity and both axis of rotation conllinear, both adopt on the last plane perpendicular to the Z axle that is bolted to crossbeam 13 again, and an end of first sensor 16 directly contacts with the last plane perpendicular to the Z axle of crossbeam 13 on the Z axle.On the Z axle under first magnechuck 17 and the Z axle first magnechuck form 19 when Y-axis is moved, all the time with the first contactless load maintainer beaer 3 on the end face of rectangular through-hole and bottom surface keep gap h, value is 0＜h＜1mm, to satisfy the demand that dynamically accurately loads.
Consult Fig. 9, described contact load maintainer is made up of the first contact load maintainer 1 and the second contact load maintainer 9, the first contact load maintainer 1 and the second contact load maintainer, 9 symmetries are installed in the rear and front end of tested linear electric motors direction of motion, because the structural principle and the function of the first contact load maintainer 1 and the second contact load maintainer 9 are identical, it is the difference of installation site, here only describing the first contact load maintainer, 1, the second contact load maintainer 9 in detail repeats no more.
The described first contact load maintainer 1 mainly is made up of contact load maintainer force transducer 20, wire rope 21, supporting seat 22, roller 23, torque sensor 24, shaft coupling 25, torque motor 26.
End face (or another end face) perpendicular to Y direction of loading support mechanism 7 middle cross beams 13 is fixedlyed connected with an end of wire rope 21 by contact load maintainer force transducer 20, the other end of wire rope 21 is connected in roller 23, the output terminal of torque motor 26 is connected with the input end of torque sensor 24 by shaft coupling 25, the output terminal of torque sensor 24 is connected with the input end of the roller shaft that is set with roller 23, and the other end that is set with the roller shaft of roller 23 is supported and fixed on left side platform or the dextral platform by supporting seat 22.Torque motor 26 provides power by roller 23 and wire rope 21 grades for loading support mechanism 7, torque motor 26 is formed closed-loop control with contact load maintainer force transducer 20, the retractable rope action of servo adjusting wire rope 21, by control, produce the loading of linear electric motors generation to be measured along direction of motion to wire rope 21.The principle of work of the second contact load maintainer 9 of opposite side is identical with it, and the first contact load maintainer 1 and the second contact load maintainer 9 move simultaneously, works in coordination, and realizes the constant or varying load of direction of motion is loaded.Simultaneously the torque motor 26 that the first contact load maintainer 1 is identical with two structures in the second contact load maintainer 9 closed loop servo that identical contact load maintainer force transducer 20 is formed respectively separately with two structures is controlled the thrust that can also bear detection linear electric motors to be measured under the varying duty situation at linear electric motors to be measured.
Main technical requirements to two contact load maintainer force transducers 20 is:
1. radial sensor.
2. only require to record pulling force, promptly belong to pulling force sensor.
3. require fully loaded measurement of sensor to be out of shape less than 0.01mm.
4. the composition error scope of sensor: ± 0.05 (%R.O.).
5. the measurement range of sensor is: 0N～XN, and promptly minimum measured value is 0N, and greatest measurement is X N, and X is greater than user's the maximal value that will load, and leaves the needed safety coefficient of user.For example: user-defined safety coefficient is 150%, and needing the maximum load value is 2000N, and the range of this sensor of choosing is so: 0N～3000N.
The bolt hole that the bottom of sensor is reserved by product is connected on the loading support mechanism 7 on the end face perpendicular to Y-axis, and the workplace of sensor is connected in of wire rope 21, arrives closed-loop control, satisfies the demand that dynamically accurately loads.
Load and contactless loading by separate contact, can realize that just linear electric motors to be measured are carried out the Three Degree Of Freedom combination in any to load, and reaches the optimum efficiency of simulation linear electric motors real working condition.
Consult Figure 10, contactless load maintainer as previously described is the X-direction first contactless load maintainer 5, the X-direction second contactless load maintainer 11, the Z-direction first contactless upward load maintainer 6, the Z-direction second contactless upward load maintainer 8, the Z-direction first contactless load maintainer down and the replaceable gas injection equipment for employing gas injection load mode of the Z-direction second contactless load maintainer down, promptly the magnechuck in the foregoing contactless load maintainer is replaced with the gas injection equipment.
The gas injection equipment comprises gas injection equipment end cap 29, gas injection equipment O-ring seal 28 and gas injection equipment base 27.They from top to bottom stack together successively, adopt bolted be connected to a whole mechanism the gas injection equipment.
Gas injection equipment base 27 is the basic components of gas injection equipment, gas injection equipment base 27 is a square (or rectangle) structural member, the center of gas injection equipment base 27 upper surfaces is provided with a square (or rectangle) groove, be evenly equipped with 8 tapped blind holes around square (or rectangle) groove, the constant area of square (or rectangle) groove is S 2, the center of square (or rectangle) bottom land is provided with a vertical circular blind hole B, and (area is S 1), (area is S to the transverse circular blind hole A of the constant area that vertical circular blind hole B and gas injection equipment base 27 sides are provided with 1) be connected, exactly, vertical circular blind hole B is identical with the area of transverse circular blind hole A, and the axis of rotation of vertical circular blind hole B and transverse circular blind hole A intersects vertically.
Gas injection equipment O-ring seal 28 is the hollow leaf seal of a square (or rectangle), be placed on the effect of playing the sealing pressurize between gas injection equipment base 27 and the gas injection equipment end cap 29, be evenly equipped with 8 through holes that pass screw on the gas injection equipment O-ring seal 28.
Gas injection equipment end cap 29 is a square (or rectangle) structural member, and gas injection equipment end cap 29 is provided with vertical manhole C, and (area is S 3), vertically manhole C becomes the two-dimensional matrix formula of J * K to distribute on gas injection equipment end cap 29, and (area is S to promptly vertical manhole C 3) add up to J * K.Be evenly equipped with 8 sunk screw through holes around J * K the vertical manhole C, in order to gas injection equipment end cap 29, gas injection equipment O-ring seal 28 and gas injection equipment base 27 are connected to become one-piece construction by hexagon socket head cap screw.
(pressure is P to the gas that is provided by external air pump during work 1) (area is S by the transverse circular blind hole of gas injection equipment base 27 sides by flexible pipe 1) entering the gas injection equipment, (area is S to gas through vertical circular blind hole 1) and then (area is S to arrive square groove 2) in, the pressure of this moment is P 1* S 1/ S 2, finally (total area of the vertical manhole C that the two-dimensional matrix formula distributes is S by the individual vertically manhole C of the J * K that becomes the two-dimensional matrix formula to distribute on the gas injection equipment end cap 29 output 3* J * K), the pressure of gas injection equipment output is P 1* S 1/ S 2* S 3* J * K, wherein: pressure unit is Pa, square measure is m 2
Parameter wherein is that user oneself sets, and leaves certain safety coefficient when maximum pressure is provided satisfying, and wherein J and K will select appropriately, satisfy enough pressure is provided in, be evenly distributed, so that realize stablizing the purpose of loading as far as possible.
The bottom of gas injection equipment be the bottom face of gas injection equipment base 27 the same contact is connected with force transducer with the bottom face of the described magnechuck in front, by the accurate control load of close-loop feedback.Wherein contactless load maintainer beaer is also identical, and can consider to adopt non-magnetizer also can.Adopt static other composition, the connected mode that loads combined test apparatus of linear electric motors three-freedom moving of gas injection equipment to adopt the static combined test apparatus that loads of linear electric motors three-freedom moving of magnechuck the same together with load maintainer.
Consult Figure 11, contactless load maintainer as previously described is the X-direction first contactless load maintainer 5, the X-direction second contactless load maintainer, the Z-direction first contactless upward load maintainer 6, the Z-direction second contactless upward load maintainer 8, the Z-direction first contactless load maintainer down and the replaceable liquid jet mechanism for employing liquid injection load mode of the Z-direction second contactless load maintainer down, promptly the magnechuck in the foregoing contactless load maintainer is replaced with liquid jet mechanism.
Liquid jet mechanism comprises liquid jet mechanism end cap 32, liquid jet mechanism O-ring seal 31 and liquid jet mechanism base 30.They from top to bottom stack together successively, adopt bolted be connected to a whole mechanism liquid jet mechanism.
Liquid jet mechanism base 30 is the basic components of liquid jet mechanism, liquid jet mechanism base 30 is a square (or rectangle) structural member, the center of liquid jet mechanism base 30 upper surfaces is provided with No. 1 square (or rectangle) groove, be evenly equipped with 8 tapped blind holes around the square groove, the constant area of No. 1 square (or rectangle) groove is S 2, the center of No. 1 square (or rectangle) bottom land is provided with a vertical circular blind hole E, and (area is S 1), (area is S to the transverse circular blind hole F of the constant area that vertical circular blind hole E and liquid jet mechanism base 30 sides are provided with 1) be connected, exactly, vertical circular blind hole E is identical with the area of transverse circular blind hole F, and the axis of rotation of vertical circular blind hole E and transverse circular blind hole F intersects vertically.
Liquid jet mechanism O-ring seal 31 is the hollow leaf seal of a square (or rectangle), be placed on the effect of playing the sealing pressurize between liquid jet mechanism base 30 and the liquid jet mechanism end cap 32, be evenly equipped with 8 through holes that pass screw on the liquid jet mechanism O-ring seal 31.
Liquid jet mechanism end cap 32 is a square (or rectangle) structural member, the center of liquid jet mechanism end cap 32 upper surfaces is provided with No. 2 squares (or rectangle) groove, and the bottom land of No. 2 squares (or rectangle) groove is provided with vertical manhole G, and (area is S 3), vertically manhole G becomes the two-dimensional matrix formula of J * K to distribute on liquid jet mechanism end cap 32, and (area is S to promptly vertical manhole G 3) add up to J * K.Be evenly equipped with 8 sunk screw through holes around No. 2 squares (or rectangle) groove, liquid gas injection equipment end cap 32, liquid jet mechanism O-ring seal 31 and liquid jet mechanism base 30 be connected to become one-piece construction by hexagon socket head cap screw.
Wherein liquid medium does not have concrete restriction, adopts non-corrosiveness, environmental protection, cheap fluid to get final product.
(pressure is P to the liquid that is provided by external pumping plant during work 1) be that (area is S for the transverse circular blind hole F of liquid jet mechanism base 30 sides by flexible pipe by the liquid jet mechanism side 1) enter, (area is S to liquid through vertical circular blind hole E 1) and then (area is S to arrive No. 1 square groove 2), the pressure of this moment is P 1* S 1/ S 2, finally (total area of the vertical manhole G that the two-dimensional matrix formula distributes is S by the individual vertically manhole G of the J * K that becomes the two-dimensional matrix formula to distribute on the liquid jet mechanism end cap 32 output 3* J * K), the pressure of output is P 1* S 1/ S 2* S 3* J * K, wherein: pressure unit is Pa, square measure is m 2
Parameter wherein is that user oneself sets, and leaves certain safety coefficient when maximum pressure is provided satisfying, and wherein J and K will select appropriately, satisfy enough pressure is provided in, be evenly distributed, so that realize stablizing the purpose of loading as far as possible.
The bottom of liquid jet mechanism be the bottom face of liquid jet mechanism base 30 the same contact is connected with force transducer with the bottom face of the described magnechuck in front, by the accurate control load of close-loop feedback.Wherein contactless load maintainer beaer is also identical, and can consider to adopt non-magnetizer also can.And the increase fluid collection device, so that pass back into pumping plant, recycle.And the sealed damp-proof work of carrying out associated components gets final product, and adopts static other composition, the connected mode that loads combined test apparatus of the linear electric motors three-freedom moving of liquid jet mechanism the same with the static loading of the linear electric motors three-freedom moving that adopts magnechuck combined test apparatus with load maintainer.
Linear electric motors three-freedom moving of the present invention is static load the type of the linear electric motors that combined test apparatus tests can variation, be suitable for the known all types linear electric motors that move along rectilinear direction: cylindrical moving magnet linear electric motors, U type slot type linear electric motors, dull and stereotyped linear electric motors etc.
Consult Figure 12, tested object can also be other linear feeding systems except that linear electric motors, as spindle arrangement etc.Be that example describes below with the screw pair:
The structure of the structure of the three-freedom moving static state loading combined test apparatus of test screw pair and the static loading of the three-freedom moving combined test apparatus of test linear electric motors is basic identical, comprises that promptly linear electric motors three-freedom moving static state loads the first contact load maintainer 1 that combined test apparatus had, test platform 2, the first contactless load maintainer beaer 3, the line slideway 4 that two-strip structure is identical, the X-direction first contactless load maintainer 5, the Z-direction first contactless load maintainer 6 of going up, loading support mechanism 7, the Z-direction second contactless load maintainer 8 of going up, the second contact load maintainer 9, the second contactless load maintainer beaer 10, the X-direction second contactless load maintainer 11, the Z-direction first contactless load maintainer down, Z-direction second contactless load maintainer and the electric-control system down.The static annexation that loads in the combined test apparatus of annexation between them and linear electric motors three-freedom moving is identical.Wherein: Z-direction first is contactless to go up that load maintainer 6, the Z-direction first contactless load maintainer down, Z-direction second are contactless to be gone up load maintainer 8 and Z-direction second contactless the load maintainer structure is identical down; The X-direction first contactless load maintainer 5 is identical with X-direction second contactless load maintainer 11 structures.Simultaneously, contactless load maintainer both can adopt the electromagnetism load mode also can adopt the fluid jet load mode.Different is to have increased the needed electric rotating machine 33 of test screw pair, the first leading screw supporting seat 34, feed screw nut's seat 36 and the second leading screw supporting seat 38.
Electric rotating machine 33 is fixed on the right-hand member of the belly board between the identical line slideway 4 of two structures that are parallel to each other, the axis of rotation of electric rotating machine 33 output shafts is parallel with line slideway 4, the output terminal of electric rotating machine 33 is connected with leading screw 37 1 ends by shaft coupling, and the two ends of tested leading screw 37 are fixed on by the first leading screw supporting seat 34 and the second leading screw supporting seat 38 on the top end face of belly board of test platform 2.The first leading screw supporting seat 34 and the second leading screw supporting seat 38 are positioned at the left and right sides of loading support mechanism 7 along Y direction, the axis of rotation conllinear of the axis of rotation of tested leading screw 37 and electric rotating machine 33 output shafts, i.e. the axis of rotation of the through hole of the leading screw 37 that the first leading screw supporting seat 34 and the second leading screw supporting seat, 38 upper ends installation is tested and the axis of rotation conllinear of electric rotating machine 33 output shafts.Tested feed screw nut 35 is sleeved on the tested leading screw 37 to become to be rotationally connected, the top of feed screw nut's seat 36 is fixed on the bottom surface of loading support mechanism 7, and tested feed screw nut's 35 the axis of rotation of through hole and the axis of rotation conllinear of electric rotating machine 33 output shafts are installed on feed screw nut's seat 36.Feed screw nut's seat 36 is sleeved on tested feed screw nut 35 the outside surface and with bolt and is connected to an integral body.The rotation of electric rotating machine 33 rotating band movable wire thick sticks 37, tested feed screw nut 35 carries out linear reciprocating motion along leading screw 37 in Y direction, promptly drives loading support mechanism 7 by feed screw nut's seat 36 and moves back and forth in Y direction along line slideway 4.
Carrying out non-direction of motion when loading, each contactless load maintainer (X-direction first contactless load maintainer 5, the X-direction second contactless load maintainer 11, the Z-direction first contactless load maintainer 6 of going up, the Z-direction second contactless load maintainer 8 of going up, contactless load maintainer down of Z-direction first and the Z-direction second contactless load maintainer down) move along each working surface of the first contactless load maintainer beaer 3 and the second contactless load maintainer beaer 10, and there is gap h, when 0＜h＜1mm, adjustment to the unitary variant of electric current or fluid pressure, reached the purpose of control load, form close-loop feedback control by the force transducer that is connected with each contactless load maintainer simultaneously, promptly reached the purpose of accurate control load, realized that stable constant duty and varying load load.
When carrying out the direction of motion loading, roller 23 diameters are enough big, and roller widths is moderate, are in the direction of motion that is parallel to linear electric motors to be measured all the time so that guarantee the wire rope 21 that is connected between roller 23 and the loading support mechanism 7, get rid of the interference of other component; Torque motor 26 drives roller 23 rotations, and wire rope 21 is carried out retractable rope action, and torque motor 26 is formed closed-loop system with contact load maintainer force transducer 20, in real time control load; As when linear electric motors to be measured when the Y-axis positive dirction is moved, be in the torque motor 26 of positive and negative two directions of Y-axis, control roller 23 carries out retractable rope action, and form close-loop feedback control with the contact load maintainer force transducer 20 of homonymy, control both sides torque motor 26 in real time, make its component that produces both direction, the size of power is controlled by servo-drive system separately, reaches the effect that the skimulated motion direction loads.
In order to realize that linear electric motors to be measured are bearing the function that detects its thrust under the varying duty situation, i.e. mounting torque sensor 24 between torque motor 26 and roller 23, linear electric motors are to a lateral movement time, by close-loop feedback control wire rope 21 being in all the time tightens and lax critical conditions, this moment, the moment of torsion of torque motor 26 outputs was learnt by torque sensor 24, and the radius of roller 23 is a fixed value, can be tried to achieve the thrust of linear electric motors real-time change by the computing formula of moment.

Claims (7)

1. a linear electric motors three-freedom moving static state loads combined test apparatus, it is characterized in that, the static combined test apparatus that loads of described linear electric motors three-freedom moving comprises the first contact load maintainer (1), test platform (2), the first contactless load maintainer beaer (3), the line slideway that two-strip structure is identical (4), the X-direction first contactless load maintainer (5), the Z-direction first contactless load maintainer (6) of going up, loading support mechanism (7), the Z-direction second contactless load maintainer (8) of going up, the second contact load maintainer (9), the second contactless load maintainer beaer (10), the X-direction second contactless load maintainer (11), Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down, wherein: described test platform (2) is by the left side platform, belly board and dextral platform are formed, and described loading support mechanism (7) is made up of crossbeam (13) and base (12);
One end of the first contact load maintainer (1) is installed on the top end face of left side platform, one end of the second contact load maintainer (9) is installed on the top end face of dextral platform, the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10) are along the parallel both sides that are installed in the belly board top end face symmetrically of Y direction, the line slideway that two-strip structure is identical (4) is parallel to be installed on the top end face of the belly board between the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10) symmetrically, line slideway (4) contact that base (12) in the loading support mechanism (7) is identical with two-strip structure connects, the X-direction first contactless load maintainer (5) and the X-direction second contactless load maintainer (11) are installed on 2 T font end faces of vertical X-axis of base (12), the Z-direction first contactless load maintainer (6) of going up is installed on the upper surface and bottom surface of crossbeam (13) one ends with the Z-direction first contactless load maintainer down, the Z-direction second contactless load maintainer (8) of going up is installed on the upper surface and bottom surface of crossbeam (13) other end with the Z-direction second contactless load maintainer down, the Z-direction first contactless load maintainer (6) of going up is installed, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer (8) of going up, crossbeam (13) two ends of the Z-direction second contactless load maintainer down and the rectangular through-hole clearance fit on the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10), fixedly connected perpendicular to the left side of Y-axis in the other end of the first contact load maintainer (1) and the crossbeam (13), fixedly connected perpendicular to the right side of Y-axis in the other end of the second contact load maintainer (9) and the crossbeam (13).
2. according to the static combined test apparatus that loads of the described linear electric motors three-freedom moving of claim 1, it is characterized in that, the described first contact load maintainer (1) is identical in structure two covering devices with the second contact load maintainer (9), and the first contact load maintainer (1) comprises contact load maintainer force transducer (20), wire rope (21), roller (23), torque sensor (24), shaft coupling (25) and torque motor (26);
The output terminal of torque motor (26) is connected with the input end of torque sensor (24) by shaft coupling (25), the output terminal of torque sensor (24) is fixedlyed connected with the input end of the roller shaft that is set with roller (23), the other end that is set with the roller shaft of roller (23) is supported and fixed on the platform of left side by supporting seat (22), one end of wire rope (21) is connected in roller (23), the other end of wire rope (21) is fixedlyed connected with an end of contact load maintainer force transducer (20), and the other end of contact load maintainer force transducer (20) is fixedlyed connected with the left side perpendicular to Y-axis of loading support mechanism (7) middle cross beam (13).
3. according to the static combined test apparatus that loads of the described linear electric motors three-freedom moving of claim 1, it is characterized in that, the described Z-direction first contactless load maintainer (6) of going up, the Z-direction first contactless load maintainer down, the Z-direction second contactless load maintainer (8) of going up is an identical in structure quadruplet device with the Z-direction second contactless load maintainer down, the Z-direction first contactless load maintainer (6) of going up is made up of first sensor (16) on first magnechuck (17) on the Z axle and the Z axle, adopt bolt first magnechuck (17) on the Z axle to be fixedlyed connected with first sensor (16) on the Z axle and both axis of rotation conllinear, adopt bolt both to be fixed on the last plane perpendicular to the Z axle of crossbeam (13) again, an end of first sensor on the Z axle (16) contacts with the last plane perpendicular to the Z axle of crossbeam (13);
The X-direction first contactless load maintainer (5) is identical in structure two covering devices with the X-direction second contactless load maintainer (11), the X-direction first contactless load maintainer (5) is made up of X-axis first sensor (14) and X-axis first magnechuck (15), adopt bolt X-axis first sensor (14) to be fixedlyed connected with X-axis first magnechuck (15) and both axis of rotation conllinear, adopt bolt both to be fixed on the T shape end face perpendicular to the X-axis negative direction of base (12) again, an end of X-axis first sensor (14) directly contacts with the T shape end face perpendicular to the X-axis negative direction of base (12).
4. according to the static combined test apparatus that loads of the described linear electric motors three-freedom moving of claim 1, it is characterized in that the described first contactless load maintainer beaer (3) is identical in structure two covering devices with the second contactless load maintainer beaer (10);
The first contactless load maintainer beaer (3) is the structural member of a rectangle plane frame-type of being made by permeability magnetic material, the bottom surface that upper surface contact in the first contactless load maintainer beaer (3) and test platform (2) is connected is perpendicular to the Z axle, it is the rectangular through-hole of clearance fit with the Z-direction first contactless load maintainer (6) of going up with the Z-direction first contactless load maintainer down that the centre position of the first contactless load maintainer beaer (3) is provided with one, and the gap is t 1, value is 0＜t 1＜1mm, the end face of rectangular through-hole and the bottom surface of rectangular through-hole are rectangle planes, the end face of rectangular through-hole and the bottom surface of rectangular through-hole are perpendicular to the Z axle, the first contactless load maintainer beaer (3) inboard with the bottom surface angle be 90 ° be rectangle plane promptly perpendicular to the side of X-axis, between this rectangular side plane and the X-direction first contactless load maintainer (5) is clearance fit, the gap is h, and value is 0＜h＜1mm.
5. according to the static combined test apparatus that loads of the described linear electric motors three-freedom moving of claim 1, it is characterized in that the described X-direction first contactless load maintainer (5), the X-direction second contactless load maintainer (11), Z-direction first contactless load maintainer (6), the Z-direction second contactless upward load maintainer (8), the Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down gone up all comprise magnechuck and force transducer;
Described magnechuck replaces with the gas injection equipment that adopts gas to spray load mode, described gas injection equipment comprises gas injection equipment end cap (29), gas injection equipment O-ring seal (28) and gas injection equipment base (27), and they stack together and adopt bolted;
Gas injection equipment base (27) is the basic components of gas injection equipment, gas injection equipment base (27) is a square or rectangular configuration part, the center of gas injection equipment base (27) upper surface is provided with a square groove or rectangular channel, be evenly equipped with 8 tapped blind holes around square groove or the rectangular channel, center at the bottom of the square groove or at the bottom of the rectangular channel is provided with a vertical circular blind hole B, the transverse circular blind hole A that vertical circular blind hole B and gas injection equipment base (27) side are provided with is connected, the axis of rotation that is vertical circular blind hole B and transverse circular blind hole A intersects vertically, and vertical circular blind hole B is identical with the area of transverse circular blind hole A;
Gas injection equipment O-ring seal (28) is a square or rectangle hollow leaf seal, is evenly equipped with 8 through holes that pass screw on the gas injection equipment O-ring seal (28);
Gas injection equipment end cap (29) is a square or rectangular configuration part, gas injection equipment end cap (29) is provided with vertical manhole C, vertically manhole C becomes the two-dimensional matrix formula of J * K to distribute on gas injection equipment end cap (29), is evenly equipped with 8 sunk screw through holes around J * K the vertical manhole C.
6. according to the static combined test apparatus that loads of the described linear electric motors three-freedom moving of claim 1, it is characterized in that, the described X-direction first contactless load maintainer (5), the X-direction second contactless load maintainer (11), the Z-direction first contactless load maintainer (6) of going up, the Z-direction second contactless load maintainer (8) of going up, magnechuck in Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down replaces with the liquid jet mechanism that adopts liquid to spray load mode, described liquid jet mechanism comprises liquid jet mechanism end cap (32), liquid jet mechanism O-ring seal (31) and liquid jet mechanism base (30), they stack together and adopt bolted;
Liquid jet mechanism base (30) is a square or rectangular configuration part, the center of liquid jet mechanism base (30) upper surface is provided with No. 1 square groove or rectangular channel, be evenly equipped with 8 tapped blind holes around square groove or the rectangular channel, at the bottom of No. 1 square groove or the center at the bottom of the rectangular channel is provided with a vertical circular blind hole E, the transverse circular blind hole F of the constant area that vertical circular blind hole E and liquid jet mechanism base (30) side are provided with is connected, the axis of rotation of vertical circular blind hole E and transverse circular blind hole F intersects vertically, and vertical circular blind hole E is identical with the area of transverse circular blind hole F;
Liquid jet mechanism O-ring seal (31) is a square or rectangle hollow leaf seal, is evenly equipped with 8 through holes that pass screw on the liquid jet mechanism O-ring seal (31);
Liquid jet mechanism end cap (32) is a square or rectangular configuration part, the center of liquid jet mechanism end cap (32) upper surface is provided with No. 2 square groove or rectangular channel, the bottom land of No. 2 square groove or rectangular channel is provided with vertical manhole G, vertically manhole G becomes the two-dimensional matrix formula of J * K to distribute on liquid jet mechanism end cap (32), is evenly equipped with 8 sunk screw through holes around No. 2 square groove or the rectangular channel.
7. a screw pair three-freedom moving static state loads combined test apparatus, comprise the first contact load maintainer (1), test platform (2), the first contactless load maintainer beaer (3), the line slideway that two-strip structure is identical (4), the X-direction first contactless load maintainer (5), the Z-direction first contactless load maintainer (6) of going up, loading support mechanism (7), the Z-direction second contactless load maintainer (8) of going up, the second contact load maintainer (9), the second contactless load maintainer beaer (10), the X-direction second contactless load maintainer (11), Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer down, wherein: described test platform (2) is by the left side platform, belly board and dextral platform are formed, and described loading support mechanism (7) is made up of crossbeam (13) and base (12);
One end of the first contact load maintainer (1) is installed on the top end face of left side platform, one end of the second contact load maintainer (9) is installed on the top end face of dextral platform, the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10) are along the parallel both sides that are installed in the belly board top end face symmetrically of Y direction, the line slideway that two-strip structure is identical (4) is parallel to be installed on the top end face of the belly board between the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10) symmetrically, line slideway (4) contact that base (12) in the loading support mechanism (7) is identical with two-strip structure connects, the X-direction first contactless load maintainer (5) and the X-direction second contactless load maintainer (11) are installed on 2 T font end faces of vertical X-axis of base (12), the Z-direction first contactless load maintainer (6) of going up is installed on the upper surface and bottom surface of crossbeam (13) one ends with the Z-direction first contactless load maintainer down, the Z-direction second contactless load maintainer (8) of going up is installed on the upper surface and bottom surface of crossbeam (13) other end with the Z-direction second contactless load maintainer down, the Z-direction first contactless load maintainer (6) of going up is installed, Z-direction first contactless load maintainer down and the Z-direction second contactless load maintainer (8) of going up, crossbeam (13) two ends of the Z-direction second contactless load maintainer down and the rectangular through-hole clearance fit on the first contactless load maintainer beaer (3) and the second contactless load maintainer beaer (10), fixedly connected perpendicular to the left side of Y-axis in the other end of the first contact load maintainer (1) and the crossbeam (13), fixedly connected perpendicular to the right side of Y-axis in the other end of the second contact load maintainer (9) and the crossbeam (13); It is characterized in that the static combined test apparatus that loads of described screw pair three-freedom moving also comprises electric rotating machine (33), the first leading screw supporting seat (34), feed screw nut's seat (36) and the second leading screw supporting seat (38);
Electric rotating machine (33) is fixed on the right-hand member of the belly board between the identical line slideway of two-strip structure (4), the line slideway (4) that the axis of rotation of electric rotating machine (33) output shaft is identical with two-strip structure is parallel, the output terminal of electric rotating machine (33) and an end of shaft coupling are connected, the first leading screw supporting seat (34) and the second leading screw supporting seat (38) are fixed on the top end face of belly board of test platform (2), the first leading screw supporting seat (34) and the second leading screw supporting seat (38) are positioned at the left and right sides of loading support mechanism (7), the axis of rotation of the through hole of the leading screw (37) that the first leading screw supporting seat (34) and the installation of the second leading screw supporting seat (38) upper end are tested and the axis of rotation conllinear of electric rotating machine (33) output shaft, the top of feed screw nut's seat (36) is fixed on the bottom surface of loading support mechanism (7), and feed screw nut's seat (36) is gone up the axis of rotation of the through hole that tested feed screw nut (35) is installed and the axis of rotation conllinear of electric rotating machine (33) output shaft.
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CN113156312A (en) * 2021-04-30 2021-07-23 福建师范大学 High-power linear electric motor dynamic behavior testing arrangement of adjustable structure

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