CN104251775A - Viscous traction characteristic test device for internal spherical contact pair - Google Patents
Viscous traction characteristic test device for internal spherical contact pair Download PDFInfo
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- CN104251775A CN104251775A CN201410474599.2A CN201410474599A CN104251775A CN 104251775 A CN104251775 A CN 104251775A CN 201410474599 A CN201410474599 A CN 201410474599A CN 104251775 A CN104251775 A CN 104251775A
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Abstract
The invention relates to the field of traction characteristic test research, and discloses a viscous traction characteristic test device for an internal spherical contact pair. The viscous traction characteristic test device comprises a support module, a motion control module A, a motion control module B, a load control module, a transmission ratio adjustment module, an internal spherical roller A and an internal spherical roller B, wherein the motion control module A and the internal spherical roller A are fixedly arranged on a bottom plate along the horizontal direction, and the motion control module B and the internal spherical roller B are fixedly arranged on a support A along the vertical direction; the internal spherical roller A and the internal spherical roller B have the same center of curvature of a contact region, and a hydraulic cylinder is fixedly arranged on a horizontal plate of the support A; the hydraulic cylinder and the motion control module B are positioned on the same axis, and a hydraulic cover and a bearing internally sleeve a circular cavity of the hydraulic cylinder; a turbine screw rod lifter is fixedly arranged on a support B, and a supporting rod is movably connected with the turbine screw rod lifter in a matched way; a slideway is fixedly arranged on the lower surface of the bottom plate, and a slide block is embedded in the slideway.
Description
Technical field
The present invention relates to pulling figure experimental study field, be specifically related to a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit.
Background technology
Traction Drive is a kind of form of continuously variable transmission of vehicle (CVT), and it has the advantages such as structure is simple, cheap, easy to process, finds application in some vehicles.Traction Drive relies on shear transfer moment of torsion and the power of elastohydrodynamic behaviour film between two smooth metal rollers, and therefore the shear property (pulling figure) of oil film directly affects the performance of gearing.But, owing to affecting the many factors of oil film pulling figure, as the physicochemical characteristic of temperature, pressure, relative velocity, surface topography and fluid, the existence of these factors makes to be difficult to acquisition one trailed model accurately in theory, and it constrains applying of towing gear to a great extent.
Inexhaustible exploration is carried out to drag coefficient test unit both at home and abroad, present drag coefficient test unit generally can meet multifactor measurement, and measurement range also can be satisfied the demand, loading range can from mN-KN, the high pressure of GP level can be produced in contact region, the simulation to actual condition can be accomplished.According to friction pair structure and forms of motion, current drag coefficient test unit can be divided three classes: four-ball tester, double-arc spline machine and roller---multigraph press.Wherein, four-ball tester is graded by spindle drive systems, friction pair, guiding spindle part, electric control system and spring loaded portion and forms.Its principle of work is that the clamped steel ball of three of low level keeps fixing, and three steel balls that simultaneously, rotatable steel ball is pressed in low level make it keep three point contact, and rotating speed and load can set at duration of test.Its Typical Representative is Japanese Nissan for the test unit of high contact and high rolling speed.The representative of double-arc spline machine test unit has the NSK company of the Bruker nano company of the U.S., Torotrak company of Britain and Japan.Its principle of work is that two disks keep in touch along rotor shaft direction, and can rotate around respective axis, and in process of the test, two disc rotation speeds can independently control, and carry out load on to it.Roller disc test device principle of work and double plate machine similar, but wherein a test specimen becomes roller from disk.It is represented as Japanese Toyota Company and Britain Imperial College PCS.
The contact form of Traction Drive contact point has two kinds: interior contact and outer contacting.Compared to outer contacting form, interior contact form is under identical normal pressure condition, and its contact area is larger, and can obtain more large traction, thus in order to enable Traction Drive transmit larger moment of torsion and power, the Traction Drive in practical application mostly is interior contact.But four-ball tester, double plate machine and roller---multigraph press is generally external touch, its test findings is difficult to the pulling figure of contact Traction Drive in true reflection.Further, in the course of the work, the speed ratio of Traction Drive freely can change adjustment, but the speed ratio of most of test unit can not regulate in the course of the work.Therefore traditional pulling figure test unit cannot realize the simulation to actual Traction Drive operating mode well.
Summary of the invention
In view of this, the invention provides a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit, ameter numerical value can be obtained exactly.
The technical solution used in the present invention is:
A kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit, is characterized in that, comprising: abutment member, motion-control module A, motion-control module B, load control module, ratio of gear adjustment module, Internal Spherical Surface roller A, Internal Spherical Surface roller B;
Described abutment member is made up of base plate, bearing A, bearing B, base;
Described motion-control module A is made up of motor A, torque sensor, axle A, bearing seat, pre-load nut, taper roll bearing A, sleeve A;
Described motion-control module B is made up of motor B, adapter sleeve, axle B, support set, taper roll bearing B, sleeve B;
Described load control module is made up of hydraulic cylinder, adjustment pad, hydraulic cover, thrust ball bearing, O type circle A, O type circle B;
Described ratio of gear adjustment module is made up of turbine screw lift, slideway, slide block, support bar;
The center section that described Internal Spherical Surface roller A is obtained by two planar interception spherical structures parallel to each other, uniform tapped through hole in the plane of Internal Spherical Surface roller A simultaneously;
Described Internal Spherical Surface roller B is cylindrical structural, and the upper surface part relative with Internal Spherical Surface roller A is mating spherical surfaces with Internal Spherical Surface roller A, uniform tapped through hole in the plane of Internal Spherical Surface roller B simultaneously;
Described axle B is T-type structure, has annular groove, and have annular protrusion at the lower surface of horizontal component at the lower surface of horizontal component and vertical portion intersection;
The outer circumference surface of described hydraulic cover and inner peripheral surface all have a groove with mounting O-shaped rings, and there is annular protrusion structure the upper surface of hydraulic cover;
Its annexation is as follows: motion-control module A is fixed on base plate in the horizontal direction, Internal Spherical Surface roller A is fixed on the end of motion-control module A, motion-control module B is vertically fixed on bearing A, Internal Spherical Surface roller B is fixed on the top of motion-control module B, wherein, the contact region center of curvature of Internal Spherical Surface roller A overlaps with the contact region center of curvature of Internal Spherical Surface roller B; The vertical plate of bearing A and bearing seat are connected by pair of bearings, and this to the line of bearing center axle through the common contact region center of curvature of Internal Spherical Surface roller A and Internal Spherical Surface roller B;
Hydraulic cylinder is fixed on the leveling board of bearing A, and be positioned on same axis with motion-control module B, two O type circles are set in the groove of hydraulic cover, and hydraulic cover and bearing are all sleeved in the circular ring type cavity of hydraulic cylinder, and bearing is positioned at the upper surface of hydraulic cover; Turbine screw lift is fixed on bearing B, and support bar and the activity of turbine screw lift are connected; Slideway is fixed on the lower surface of base plate, and slide block is flexibly connected i.e. slide block and can rotates around support bar with support bar, and slide block is embedded on slideway;
Further, described motor A and torque sensor are fixed on base plate in the horizontal direction, torque sensor one end is fixedly connected with motor shaft, the other end is fixedly connected with axle A, and axle A is coordinated with bearing seat by bearing, and by the pre-load nut preloaded bearing on axle A, bearing seat is arranged on base plate, Internal Spherical Surface roller A is fixed on the end face of axle A, and wherein motor A, torque sensor, Internal Spherical Surface roller A are positioned on same axis;
Described motor B is vertically fixed on bearing A, adapter sleeve one end is fixedly connected with motor shaft, the other end and axle B are flexibly connected, and gap is left on the bottom of axle B vertical portion and the top of adapter sleeve endoporus, axle B is coordinated with hydraulic cylinder by bearing, and by being fixed on the support set spring bearing on bearing A leveling board, hydraulic cylinder is vertically fixed on the leveling board of bearing A, Internal Spherical Surface roller B is fixed on the upper surface of axle B vertical portion, and wherein motor B, adapter sleeve, hydraulic cylinder, Internal Spherical Surface roller B are positioned on same axis;
Described motor A and torque sensor coordinate driving torque by flat key peace keyway, and by respective support axial restraint, and torque sensor and axle A coordinate driving torque by spline and female spline, and axle A is by set nut and bearing axial restraint;
Selection of Bearings taper roll bearing A during described axle A is coordinated with bearing seat 5 by bearing, on the outer circumference surface that taper roll bearing A, sleeve A are all sleeved on axle A and on the inner peripheral surface of bearing seat, wherein, taper roll bearing A uses back-to-back in pairs, be positioned at the two ends of sleeve A, the inner peripheral surface of sleeve A and bearing seat is fitted, and keeps gap with the outer circumference surface of axle A;
Described motor B and adapter sleeve coordinate driving torque by flat key peace keyway, and threaded hole is had on adapter sleeve, with screw by itself and motor shaft axial restraint, adapter sleeve and axle B coordinate driving torque by spline and female spline, and can be movable relatively in the axial direction;
Described axle B passes in the middle of hydraulic cylinder, and coordinated with hydraulic cylinder by bearing, Selection of Bearings taper roll bearing B wherein, on the outer circumference surface that taper roll bearing B, sleeve B are all sleeved on axle B and on the inner peripheral surface of hydraulic cylinder, wherein, taper roll bearing B uses face-to-face in pairs, is positioned at the two ends of sleeve B, the outer circumference surface of sleeve B and axle B is fitted, and keeps gap with the inner peripheral surface of hydraulic cylinder;
There are two fixing axles the both sides of described bearing seat; Pair of bearings is fixed on the vertical plate of bearing A by bearing cover, be connected simultaneously, and the vertical plate of bearing seat and bearing A is connected, and this is to Selection of Bearings deep groove ball bearing with the stationary shaft of bearing seat both sides;
Described hydraulic cylinder, the leveling board of bearing A, support set all have borehole structure; And when installing, make the position consistency in the hole on the leveling board of hydraulic cylinder, bearing A, support set;
Described hydraulic cover is sleeved in the circular ring type cavity of hydraulic cylinder, all fit with the inside and outside periphery of cavity in both sides, bearing holder (housing, cover) is contained in the cavity of hydraulic cylinder, the inner peripheral surface of bearing and the inner peripheral surface of hydraulic cylinder cavity keep gap, and outer circumference surface abuts against the annular protrusion of hydraulic cover upper surface, when imposed load, bearing contacts with the lower surface of axle B, and the outer circumference surface of bearing abuts against the annular protrusion of axle B horizontal component lower surface simultaneously; And this Selection of Bearings thrust ball bearing.
Principle of work: when motor A rotates, drives the rotation of twisting sensor, axle A and Internal Spherical Surface roller A, and meanwhile, taper roll bearing A achieves being separated of revolving part axle A and not moving part bearing seat; When motor B rotates, drive the rotation of adapter sleeve, axle B and Internal Spherical Surface roller B, meanwhile, taper roll bearing B achieves being separated of revolving part axle B and not moving part hydraulic cylinder; Controlled by the rotating speed of motor A and motor B, control the rotating speed of Internal Spherical Surface roller A and Internal Spherical Surface roller B, namely process of the test is sliding rolls than determining, realize purely rolling, pure cunning and certain sliding roll than test situation, and the Traction Drive in process of the test relies on shear transfer moment of torsion and the power of elastohydrodynamic behaviour film between Internal Spherical Surface roller A and Internal Spherical Surface roller B, tractive force is drawn by torque sensor measurement;
When from oilhole injection pressure oil, promotion hydraulic cover and thrust ball bearing move up, during to the end contact of thrust ball bearing upper surface and axle B, impeller-hub B and Internal Spherical Surface roller B moves up, hydraulic cylinder upper surface and axle B end face form gap, simultaneously Internal Spherical Surface roller A and Internal Spherical Surface roller B closely conflicts, namely by adjustment hydraulic cylinder inner fluid pressure change to the loading force of Internal Spherical Surface roller B, and thrust ball bearing achieves being separated of revolving part axle B and non-rotating hydraulic cover; When from oilhole effluent oil, hydraulic cover and thrust ball bearing move down under gravity, Internal Spherical Surface roller B loses loading force, under gravity, Internal Spherical Surface roller B and axle B also moves down, namely Internal Spherical Surface roller B is separated with Internal Spherical Surface roller A, thus facilitates the handling of Internal Spherical Surface roller A and Internal Spherical Surface roller B;
Regulate the vertical movement of support bar by turbine screw lift and ensure the self-locking of support bar, when support bar vertically moves, band movable slider rotates around support bar and is with movable slider translation in slideway, make base plate with the axis of a pair deep groove ball bearing for rotating shaft rotates simultaneously, thus the surface of contact of Internal Spherical Surface roller A and Internal Spherical Surface roller B is changed, realize the change of speed ratio;
Abutment member is that test unit is installed and fixing place, motion-control module A, motion-control module B, load control module, ratio of gear adjustment module are linked together, and by the weight transfer of the acting force between the loading force of load control module and each several part and modules to ground, realize whole device structure and stressed on balance.
Beneficial effect of the present invention:
(1) Internal Spherical Surface contact pulling figure test unit of the present invention is simple except having structure, loading range is large, measure accurately, outside the advantage such as easy to operate, because Internal Spherical Surface roller A determines to contact Traction Drive form in it with Internal Spherical Surface roller B configuration design, and it can realize the speed-ratio regulation in the course of work, therefore can the operating characteristic of the actual Traction Drive contact point of real simulation;
(2) two Internal Spherical Surface roller installation sites of the present invention and ratio of gear regulating system, achieves the adjustable target of speed ratio in test unit process of the test, can obtain towed CVT speed ratio change test figure;
(3) the present invention selects hydraulic loaded, and by regulating oil liquid pressure, controlled loading power, whole process loading force is stablized adjustable;
(4) the present invention selects torque sensor to carry out tractive force measurement, shorten the length of whole axle A kinetic control system, when making change ratio of gear, the vertical range of support bar motion shortens, whole test unit size reduces, and compared to force sensor measuring tractive force, select torque sensor to make test unit structure simpler;
(5) motor shaft A of the present invention be connected with the flat key of torque sensor, the spline joint of axle A and torque sensor, there is the advantage of easy disassembly, reliable transmission; Simultaneously, motor shaft B is connected with the flat key of adapter sleeve, the spline joint of axle B and adapter sleeve also has the advantage of easy disassembly, reliable transmission, especially the spline joint of axle B and adapter sleeve, make axle B removable in its axial direction, facilitate the installation of Internal Spherical Surface roller A, Internal Spherical Surface roller B, remove and change;
(6) the present invention's length of bearing seat and hydraulic cylinder of having selected taper roll bearing and sleeve to adapt to, and make axle A and axle B transmission more stable.
Accompanying drawing explanation
Fig. 1 is Internal Spherical Surface Contact Pair viscosity pulling figure test unit structural representation of the present invention;
Fig. 2 is the structural representation of Internal Spherical Surface roller A of the present invention and Internal Spherical Surface roller B contact region
Fig. 3 is the structural representation of motion-control module A of the present invention;
Fig. 4 is motion-control module B of the present invention and load control module structural representation;
Fig. 5 is the structural representation of the axle B in motion-control module B of the present invention;
Fig. 6 is ratio of gear adjustment module structural representation of the present invention;
Wherein, 1-motor A, 2-motor B, 3-torque sensor, 4-axle A, 5-bearing seat, 6-bearing (ball) cover, 7-deep groove ball bearing, 8-Internal Spherical Surface roller A, 9-Internal Spherical Surface roller B, 10-axle B, 11-hydraulic system, 12-adapter sleeve, 13-bearing A, 14-base, 15-base plate, 16-turbine screw lift, 17-bearing B, 18-pre-load nut, 19-taper roll bearing A, 20-sleeve A, 21-screw A, 22-taper roll bearing B, 23-thrust ball bearing, 24-hydraulic cover, 25-hydraulic cylinder, 26-support set, 27-adjusts pad, 28-O type circle A, 29-O type circle B, 30-sleeve B, 31-screw B, 32-slideway, 33-slide block, 34-support bar.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
See accompanying drawing 1, a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit, comprising: abutment member, motion-control module A, motion-control module B, load control module, ratio of gear adjustment module, Internal Spherical Surface roller A8, Internal Spherical Surface roller B9;
Described abutment member is made up of base plate 15, bearing A13, bearing B17, base 14;
See accompanying drawing 3, described motion-control module A is made up of motor A1, torque sensor 3, axle A4, bearing seat 5, pre-load nut 18, taper roll bearing A19, sleeve A20, screw A21;
See accompanying drawing 4, described motion-control module B is made up of motor B2, adapter sleeve 12, axle B10, support set 26, taper roll bearing B22, sleeve B30, screw B31;
See accompanying drawing 4, described load control module is made up of hydraulic cylinder 25, adjustment pad 27, hydraulic cover 24, thrust ball bearing 23, O type circle A28, O type circle B29;
See accompanying drawing 6, described ratio of gear adjustment module is made up of turbine screw lift 16, slideway 32, slide block 33, support bar 34;
The transmission shaft of described torque sensor 3 one end has flat keyway arrangements, and the transmission shaft of the other end has spline structure;
One end of described axle A4 is internal spline structure, the plane of the other end has 4 threaded holes;
There are two fixing axles the both sides of described bearing seat 5;
See accompanying drawing 2, the center section that described Internal Spherical Surface roller A8 is obtained by two planar interception spherical structures parallel to each other, uniform 4 tapped through holes in the plane of Internal Spherical Surface roller A8 simultaneously;
Described Internal Spherical Surface roller B9 is cylindrical structural, and the upper surface part relative with Internal Spherical Surface roller A8 is mating spherical surfaces with Internal Spherical Surface roller A8, uniform 4 tapped through holes in the plane of Internal Spherical Surface roller B9 simultaneously;
See accompanying drawing 5, described axle B10 is T-type structure, and have annular groove at the lower surface of horizontal component and vertical portion intersection, and have annular protrusion at the lower surface of horizontal component, have 4 threaded holes on the top of vertical portion, there is spline structure bottom;
Described adapter sleeve 12 is two ends stepped cylindrical structurals with holes, and adapter sleeve 12 big column has flat key groove in one end, and small column has female spline in one end;
Leveling board, the support set 26 of described hydraulic cylinder 25, bearing A13 all have equal-sized borehole structure, are used for passing in and out fluid;
The outer circumference surface of described hydraulic cover 24 and inner peripheral surface all have a groove with mounting O-shaped rings, and there is annular protrusion structure the upper surface of hydraulic cover 24;
Its annexation is as follows: motor A1 and torque sensor 3 are fixed on base plate 15 by respective support in the horizontal direction, and torque sensor 3 is connected with motor shaft by flat key, are connected with axle A4 by spline; A pair taper roll bearing A19, sleeve A20 are all sleeved on the outer circumference surface of axle A4, wherein, a pair taper roll bearing A19 is positioned at the two ends of sleeve A20 back-to-back, meanwhile, this is all sleeved on the inner peripheral surface of bearing seat 5 to taper roll bearing A19, sleeve A20, and by pre-load nut 18 pretension on axle A4 this to taper roll bearing A19, wherein, bearing seat 5 is arranged on base plate 15, and the inner peripheral surface of sleeve A20 and bearing seat 5 is fitted, and keeps gap with the outer circumference surface of axle A4; Internal Spherical Surface roller A8 is fixed on the end face of axle A4 by screw A21, wherein motor A1, torque sensor 3, Internal Spherical Surface roller A8 are positioned on same axis;
Motor B2 is vertically fixed on bearing A13, adapter sleeve 12 one end is connected by flat key with motor shaft, and for preventing adapter sleeve 12 because centrifugal force is to movement in vertical direction, adapter sleeve 12 there is threaded hole, with screw, itself and motor shaft are fixed, the other end and axle B10 are by spline joint, and can be movable relatively in the axial direction, and gap is left on the top of the bottom of axle B10 vertical portion and adapter sleeve 12 endoporus, axle B10 passes in the middle of hydraulic cylinder 25, hydraulic cylinder 25 is vertically fixed on the leveling board of bearing A13, a pair taper roll bearing B22, sleeve B30 is all sleeved on the outer circumference surface of axle B10, wherein, a pair taper roll bearing B22 is positioned at the two ends of sleeve B30 face-to-face, again by this to taper roll bearing B22, sleeve B30 is sleeved on the inner peripheral surface of hydraulic cylinder 25, and compress this to taper roll bearing B22 by the support set 26 be fixed on bearing A13 leveling board, wherein, the outer circumference surface of sleeve B30 and axle B10 is fitted, gap is kept with the inner peripheral surface of hydraulic cylinder 25, Internal Spherical Surface roller B9 is fixed on the upper surface of axle B10 vertical portion by screw B31, wherein motor B2, adapter sleeve 12, hydraulic cylinder 25, Internal Spherical Surface roller B9 are positioned on same axis,
Wherein, Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9 has the identical contact region center of curvature; A pair deep groove ball bearing 7 is fixed on by bearing cover 6 on the vertical plate of bearing A13, be connected with the stationary shaft of bearing seat 5 both sides simultaneously, and bearing seat 5 is connected with the vertical plate of bearing A13, this to the line of deep groove ball bearing 7 central shaft through Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9 common centre of curvature;
Hydraulic cylinder 25 is fixed on the leveling board of bearing A13, and makes the position consistency in the hole on the leveling board of hydraulic cylinder 25, bearing A13, support set 26, forms oilhole, O type circle A28 and O type circle B29 is set in the inner peripheral surface of hydraulic cover 24 and two grooves of outer circumference surface, hydraulic cover 24 is sleeved in the circular ring type cavity of hydraulic cylinder 25, both sides are all with in cavity, outer circumference surface is fitted, thrust ball bearing 23 is sleeved in the cavity of hydraulic cylinder 25, the inner peripheral surface of thrust ball bearing 23 and the inner peripheral surface of hydraulic cylinder 25 cavity are fitted, and outer circumference surface abuts against the annular protrusion of hydraulic cover 24 upper surface, when imposed load, thrust ball bearing 23 contacts with the lower surface of axle B10, the outer circumference surface of thrust ball bearing 23 abuts against the annular protrusion of axle B10 horizontal component lower surface simultaneously,
Turbine screw lift 16 is bolted on bearing B17, and support bar 34 is through the hole on turbine screw lift 16; Slideway 32 is fixed on the lower surface of base plate 15 by screw, and slide block 33 is flexibly connected i.e. slide block 33 and can rotates around support bar 34 with support bar 34, and slide block 33 is embedded on slideway 32.
Principle of work: when motor A1 rotates, drives the rotation of twisting sensor, axle A4 and Internal Spherical Surface roller A8, and meanwhile, taper roll bearing A19 achieves being separated of revolving part axle A4 and not moving part bearing seat 5; When motor B2 rotates, drive the rotation of adapter sleeve 12, axle B10 and Internal Spherical Surface roller B9, meanwhile, taper roll bearing B22 achieves being separated of revolving part axle B10 and not moving part hydraulic cylinder 25; Controlled by the rotating speed of motor A1 and motor B2, control the rotating speed of Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9, namely process of the test is sliding rolls than determining, realize purely rolling, pure cunning and certain sliding roll than test situation, and the Traction Drive in process of the test relies on shear transfer moment of torsion and the power of elastohydrodynamic behaviour film between Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9, tractive force is measured by torque sensor 3 and is drawn;
When injecting oil from oilhole, promotion hydraulic cover 24 and thrust ball bearing 23 move up, during to the end contact of thrust ball bearing 23 upper surface and axle B10, impeller-hub B10 and Internal Spherical Surface roller B9 moves up, hydraulic cylinder 25 upper surface and axle B10 end face form gap, Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9 closely conflicts simultaneously, namely by adjustment hydraulic cylinder 25 inner fluid pressure change to the loading force of Internal Spherical Surface roller B9, and thrust ball bearing 23 achieves being separated of revolving part axle B10 and non-rotating hydraulic cover 24; When from oilhole effluent oil, hydraulic cover 24 and thrust ball bearing 23 move down under gravity, Internal Spherical Surface roller B9 loses loading force, under gravity, Internal Spherical Surface roller B9 and axle B10 also moves down, namely Internal Spherical Surface roller B9 is separated with Internal Spherical Surface roller A8, thus facilitates the handling of Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9;
Regulate the vertical movement of support bar 34 by turbine screw lift 16 and ensure the self-locking of support bar 34, when support bar 34 vertically moves, band movable slider 33 rotates around support bar 34 and is with movable slider 33 translation in slideway 32, make base plate 15 with the axis of a pair deep groove ball bearing 7 for rotating shaft rotates simultaneously, thus the surface of contact of Internal Spherical Surface roller A8 and Internal Spherical Surface roller B9 is changed, realize the change of speed ratio;
Abutment member is that test unit is installed and fixing place, motion-control module A, motion-control module B, load control module, ratio of gear adjustment module are linked together, and by the weight transfer of the acting force between the loading force of load control module and each several part and modules to ground, realize whole device structure and stressed on balance.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an Internal Spherical Surface Contact Pair viscosity pulling figure test unit, it is characterized in that, comprising: abutment member, motion-control module A, motion-control module B, load control module, ratio of gear adjustment module, Internal Spherical Surface roller A (8), Internal Spherical Surface roller B (9);
Described abutment member is made up of base plate (15), bearing A (13), bearing B (17), base (14);
Described load control module is made up of hydraulic cylinder (25), adjustment pad (27), hydraulic cover (24), thrust ball bearing (23), O type circle A (28), O type circle B (29);
Described ratio of gear adjustment module is made up of turbine screw lift (16), slideway (32), slide block (33), support bar (34);
The center section that described Internal Spherical Surface roller A (8) is obtained by two planar interception spherical structures parallel to each other, uniform tapped through hole in the plane of Internal Spherical Surface roller A (8) simultaneously;
Described Internal Spherical Surface roller B (9) is cylindrical structural, and the upper surface part relative with Internal Spherical Surface roller A (8) is mating spherical surfaces with Internal Spherical Surface roller A (8), uniform tapped through hole in the plane of Internal Spherical Surface roller B (9) simultaneously;
Its annexation is as follows: motion-control module A is fixed on base plate (15) in the horizontal direction, Internal Spherical Surface roller A (8) is fixed on the end of motion-control module A, motion-control module B is vertically fixed on bearing A (13), Internal Spherical Surface roller B (9) is fixed on the top of motion-control module B, wherein, the contact region center of curvature of Internal Spherical Surface roller A (8) overlaps with the contact region center of curvature of Internal Spherical Surface roller B (9); The vertical plate of bearing A (13) and bearing seat (5) are connected by pair of bearings, and this line to bearing center axle is through this contact region center of curvature;
Hydraulic cylinder (25) is fixed on the leveling board of bearing A (13), and be positioned on same axis with motion-control module B, two O type circles are set in the groove of hydraulic cover (24), hydraulic cover (24) and bearing are all sleeved in the circular ring type cavity of hydraulic cylinder (25), and bearing is positioned at the upper surface of hydraulic cover; Turbine screw lift (16) is fixed on bearing B (17), and support bar (34) and turbine screw lift (16) activity are connected;
Slideway (32) is fixed on the lower surface of base plate (15), slide block (33) is flexibly connected i.e. slide block (33) and can rotates around support bar (34) with support bar (34), and slide block (33) is embedded on slideway (32).
2. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1, it is characterized in that, described motion-control module A is made up of motor A (1), torque sensor (3), axle A (4), bearing seat (5), pre-load nut (18), taper roll bearing A (19), sleeve A (20), motor A (1) and torque sensor (3) are fixed on base plate (15) in the horizontal direction, torque sensor (3) one end is fixedly connected with motor shaft, the other end is fixedly connected with axle A (4), and axle A (4) is coordinated with bearing seat (5) by bearing, and by pre-load nut (18) preloaded bearing on axle A (4), bearing seat (5) is arranged on base plate (15), Internal Spherical Surface roller A (8) is fixed on the end face of axle A (4), wherein motor A (1), torque sensor (3), Internal Spherical Surface roller A (8) is positioned on same axis.
3. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1, it is characterized in that, described motion-control module B is made up of motor B (2), adapter sleeve (12), axle B (10), support set (26), taper roll bearing B (22), sleeve B (30), described axle B (10) is T-type structure, has annular groove, and have annular protrusion at the lower surface of horizontal component at the lower surface of horizontal component and vertical portion intersection, motor B (2) is vertically fixed on bearing A (13), adapter sleeve (12) one end is fixedly connected with motor shaft, the other end and axle B (10) are flexibly connected, and gap is left on the top of the bottom of axle B (10) vertical portion and adapter sleeve (12) endoporus, axle B (10) is coordinated with hydraulic cylinder (25) by bearing, and by being fixed on support set (26) spring bearing on bearing A (13) leveling board, hydraulic cylinder (25) is vertically fixed on the leveling board of bearing A (13), Internal Spherical Surface roller B (9) is fixed on the upper surface of axle B (10) vertical portion, wherein motor B (2), adapter sleeve (12), hydraulic cylinder (25), Internal Spherical Surface roller B (9) is positioned on same axis.
4. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1 or 2, it is characterized in that, described motor A (1) and torque sensor (3) coordinate driving torque by flat key peace keyway, and by respective support axial restraint, torque sensor (3) and axle A (4) coordinate driving torque by spline and female spline, and axle A (4) is by set nut (18) and bearing axial restraint.
5. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1 or 2, it is characterized in that, described axle A (4) is coordinated with bearing seat (5) by bearing, Selection of Bearings taper roll bearing A (19) in cooperation, taper roll bearing A (19), on the outer circumference surface that sleeve A (20) is all sleeved on axle A (4) and on the inner peripheral surface of bearing seat (5), wherein, taper roll bearing A (19) uses back-to-back in pairs, be positioned at the two ends of sleeve A (20), sleeve A (20) fits with the inner peripheral surface of bearing seat (5), gap is kept with the outer circumference surface of axle A (4).
6. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as described in claim 1 or 3, it is characterized in that, described motor B (2) and adapter sleeve (12) coordinate driving torque by flat key peace keyway, and threaded hole is had on adapter sleeve (12), with screw by itself and motor shaft axial restraint, adapter sleeve (12) and axle B (10) coordinate driving torque by spline and female spline, and can be movable relatively in the axial direction.
7. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as described in claim 1 or 3, it is characterized in that, Selection of Bearings taper roll bearing B (22) during described axle B (10) is coordinated with hydraulic cylinder (25) by bearing, taper roll bearing B (22), on the outer circumference surface that sleeve B (30) is all sleeved on axle B (10) and on the inner peripheral surface of hydraulic cylinder (25), wherein, taper roll bearing B (22) uses face-to-face in pairs, be positioned at the two ends of sleeve B (30), sleeve B (30) fits with the outer circumference surface of axle B (10), gap is kept with the inner peripheral surface of hydraulic cylinder (25).
8. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1, is characterized in that, there are two fixing axles the both sides of described bearing seat (5); Pair of bearings is fixed on the vertical plate of bearing A (13) by bearing cover (6), be connected with the stationary shaft of bearing seat (5) both sides simultaneously, and bearing seat (5) is connected with the vertical plate of bearing A (13), and this is to Selection of Bearings deep groove ball bearing (7).
9. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1, it is characterized in that, leveling board, the support set (26) of described hydraulic cylinder (25), bearing A (13) all have borehole structure; And when installing, make the position consistency in the hole on the leveling board of hydraulic cylinder (25), bearing A (13), support set (26).
10. a kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit as claimed in claim 1, it is characterized in that, there is annular protrusion structure the upper surface of described hydraulic cover (24); Hydraulic cover (24) is sleeved in the circular ring type cavity of hydraulic cylinder (25), all fit with the inside and outside periphery of cavity in both sides, bearing holder (housing, cover) is contained in the cavity of hydraulic cylinder (25), the inner peripheral surface of the inner peripheral surface of bearing and hydraulic cylinder (25) cavity is fitted, and outer circumference surface abuts against the annular protrusion of hydraulic cover (24) upper surface, when bearing contacts with the lower surface of axle B (10), the outer circumference surface of bearing abuts against the annular protrusion of axle B (10) horizontal component lower surface simultaneously; And this Selection of Bearings thrust ball bearing (23).
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| CN201410474599.2A CN104251775B (en) | 2014-09-17 | 2014-09-17 | A kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106383058A (en) * | 2016-11-11 | 2017-02-08 | 沈阳理工大学 | Metal material testing device based on symmetrical traction drive |
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| CN202994466U (en) * | 2012-12-28 | 2013-06-12 | 四川诚邦测控技术有限公司 | CVT test system |
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| CN101349609A (en) * | 2007-07-20 | 2009-01-21 | 奇瑞汽车股份有限公司 | Test method of CVT belt pulley load |
| CN102323055A (en) * | 2011-07-01 | 2012-01-18 | 重庆大学 | Continuously variable transmission of vehicle gearshift performance testing table and test method |
| US20130130865A1 (en) * | 2011-11-17 | 2013-05-23 | Jared Leidich | Bi-Axial Rolling Continuously Variable Transmission |
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