CN208922573U - Mechanical fine motion inclined-plane measures friction coefficient experiment instrument - Google Patents
Mechanical fine motion inclined-plane measures friction coefficient experiment instrument Download PDFInfo
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- CN208922573U CN208922573U CN201820066607.3U CN201820066607U CN208922573U CN 208922573 U CN208922573 U CN 208922573U CN 201820066607 U CN201820066607 U CN 201820066607U CN 208922573 U CN208922573 U CN 208922573U
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Abstract
The utility model relates to a kind of mechanical fine motion inclined-plane measure friction coefficient experiment instrument, including first base experiment cabinet, second base experiment cabinet, experiment plane, rotation ramp bracket after front longitudinal beam, rotation inclined-plane, vernier scale disk, main ruler disk, rotation inclined-plane fixed link, change inclination angle of inclined plane coarse screw bar, change inclination angle of inclined plane coarse screw bar bung flange；It is provided with rotation Beveled ends connection rotation axis in rotation Beveled ends and covers and rotating in inclined-plane left-right rotation shaft sleeve, it is convex that rotation inclined-plane or so lock screw blocking is provided in the rotation Beveled ends connection rotation axis close to rotation inclined-plane left-right rotation shaft sleeve one end.It is directly connected to the beneficial effects of the utility model are: inclination angle of inclined plane screw rod beginning will be changed with rotation bevel termination, rotation inclined-plane fixed link beginning, which directly rotates, to be fixed on rotation Beveled ends corresponding position, it is allowed to more than rotation inclined-plane without protrusion, experimenter's operation and reading data are very convenient.
Description
Technical field
The utility model patent is related to experiment instrument more particularly to a kind of mechanical fine motion inclined-plane measurement friction coefficient
Experiment instrument.
Background technique
Measuring kinematics and static friction force coefficient, there are many methods, and wherein inclined plane method is undoubtedly in all multi-methods most simple, most convenient
One kind.
Although having the measuring instrument of the kinematics and static friction force coefficient of a variety of materials with laboratory in the market, just at present
Universities and middle schools laboratory uses mechanical fine motion inclined-plane precise measurement sound and cylindrical body rolling friction force coefficient laboratory apparatus also
Do not see.It is even external also without the laboratory apparatus using mechanical automatic and accurate adjustable inclined surface apparatus inclination angle.What is generallyd use is
Hand hoisting inclined-plane rotates inclined-plane to change the outmoded method that inclination angle of inclined plane measures around low side rotation axis, and utilization is this
Inclination angle of inclined plane precision is low, error is big changing for operation, and the operation for continuously changing inclination angle of inclined plane is difficult to control.Currently, market
On have using photoelectric method precise measurement inclination angle of inclined plane, not only power consumption but also be unfavorable for energy conservation and environmental protection, and physical significance is indefinite.Application
Person once in application on December 2nd, 2015 to Patent No. ZL201310328276.8 " measurement of high precision fine tuning inclined-plane it is quiet dynamic and
Cylindrical body rolling friction force coefficient experiment instrument " patent of invention, mechanical screws carry out continuous accurate change inclination angle of inclined plane despite the use of
It is dynamic and static with cylindrical body rolling friction force coefficient to measure a variety of materials, but still has following defect: (1) using multiple slideways
With major diameter main scale, material is wasted, cost is high；(2) in rotation inclined-plane side, fixed vernier scale is more difficult and unstable；(3)
In rotation inclined-plane side, fixed vernier scale slideway and bevel termination sliding axle slideway shelf, give experimenter's observation experiment phenomenon and parameter
Measurement brings very big inconvenience；(4) using single vernier reading can to rotation inclination angle of inclined plane measurement bring one can not eliminate be
System error.In consideration of it, applicant has applied for " the mechanical fine motion application No. is 2017207082957 on June 18th, 2017 again
Inclined-plane measures friction coefficient experiment instrument " patent.Later, we have found that the experiment instrument still has many defects again: first, it is real
It is integrally relatively low to test instrument device, it is necessary to be placed on experimental bench just and can be carried out convenient operation experiments；Second, inclined-plane rotate fixed link with
Change inclination angle of inclined plane coarse screw bar and measuring scale system and greatly rotate inclined-plane (experiment table top) or more beyond experiment instrument, greatly
Ground influences experimental implementation and experimental data measurement, influences experiment effect；Third, in order to solve the problems, such as above-mentioned two, if by scale system
System moves down, and how about accurately reads inclined-plane corner after moving down, it is necessary to make the appropriate adjustments to original inclined-plane rotation axis；4th, tiltedly
Face rotates fixed link and rotates with change inclination angle of inclined plane coarse screw bar upper end with inclined-plane, needs to being partly improved below it, for example, mentioning
Rise the thin bung flange structure of the corresponding thick bung flange mechanism of the thick screw rod in inclined-plane and fine motion inclined-plane and the design and adjustment of position.
Utility model content
The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of measurement of mechanical fine motion inclined-plane
Friction coefficient experiment instrument.
This mechanical fine motion inclined-plane measures friction coefficient experiment instrument, including first base experiment cabinet, the second bottom
Front longitudinal beam, rotation inclined-plane, vernier scale disk, main ruler disk, rotation inclined-plane are fixed after seat experiment cabinet, experiment plane, rotation ramp bracket
Bar, change inclination angle of inclined plane coarse screw bar, change inclination angle of inclined plane coarse screw bar bung flange, change inclination angle of inclined plane coarse screw bar bottom end are fixed
Rotation axis and the change thin screw rod bung flange of inclination angle of inclined plane；
Rotation Beveled ends are provided with rotation Beveled ends connection rotation axis and cover in rotation inclined-plane left-right rotation axle sleeve
In cylinder, rotation inclined-plane is provided in the rotation Beveled ends connection rotation axis close to rotation inclined-plane left-right rotation shaft sleeve one end
Lock screw blocking in left and right is convex, stops convex inside to be provided with rotation inclined-plane or so banding spiral shell in rotation inclined-plane or so lock screw
Rotation Beveled ends are connected rotation axis by rotation inclined-plane or so banding nut after rotation inclination angle of inclined plane, which is adjusted, to be determined by cap
It is fixed on rotation inclined-plane left-right rotation shaft sleeve；
The connected rotation Beveled ends retaining collar of rotation axis, which is connect, with rotation Beveled ends is socketed on change inclination angle of inclined plane
On the inside of screw tip and using the fixed bung flange locking of rotation Beveled ends retaining collar, change inclination angle of inclined plane screw tip lower end
Change inclination angle of inclined plane fine motion mobile bar and change the thin screw rod bung flange sliding of inclination angle of inclined plane and be rotatablely connected, changes the thin spiral shell of inclination angle of inclined plane
Screw rod bung flange handler is integral with the thin screw rod bung flange of inclination angle of inclined plane is changed, and changes inclination angle of inclined plane thin screw rod bung flange lower end
It is spirally connected with the thin screw rod of change inclination angle of inclined plane fine motion for changing inclination angle of inclined plane coarse screw bar upper end；Change inclination angle of inclined plane coarse screw bar
Spiral shell, which passes through, changes inclination angle of inclined plane coarse screw bar bung flange, and lower end extends to the second base experiment cabinet coarse screw of second base experiment cabinet
Bar stretches in neutral gear, changes and is placed in the change inclination angle of inclined plane coarse screw bar bung flange lasso groove of inclination angle of inclined plane coarse screw bar bung flange
In the change inclination angle of inclined plane coarse screw bar bung flange lasso for changing inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit, changes inclined-plane and incline
Angle coarse screw bar bung flange handler is integral with inclination angle of inclined plane coarse screw bar bung flange is changed, and changes inclination angle of inclined plane coarse screw bar spiral shell
Circle is changing sliding rotation in inclination angle of inclined plane coarse screw bar bung flange lasso, change inclination angle of inclined plane coarse screw bar bung flange lasso and is changing
Inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit is integral；
Change inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit to cover in change inclination angle of inclined plane left-right rotation shaft sleeve, change
It is corresponding affixed with the rear front end of front longitudinal beam end after rotation ramp bracket respectively to become inclination angle of inclined plane left-right rotation shaft sleeve both ends, changes
Become inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit to be respectively set close to change inclination angle of inclined plane left-right rotation shaft sleeve inner end
There is change inclination angle of inclined plane or so lock screw to stop convex, changes inclination angle of inclined plane or so lock screw and convex inside is stopped to be provided with change
Inclination angle of inclined plane or so banding nut will by changing inclination angle of inclined plane or so banding nut after rotation inclination angle of inclined plane, which is adjusted, to be determined
Change inclination angle of inclined plane coarse screw bar bottom end rotation axis to be fixed on change inclination angle of inclined plane left-right rotation shaft sleeve.
As preferred: being connected respectively with rotation inclined-plane beginning supporting leg before behind rotation inclined-plane beginning, rotate inclined-plane beginning branch
Support leg lower end is respectively arranged with rear support leg hollow rotating shaft and front support leg hollow rotating shaft, front support leg hollow rotating shaft with
It is affixed that main ruler disk center chassis corresponds to ring, and main scale disk chassis and main ruler disk periphery coincide affixed integral.
As preferred: rotation inclined-plane beginning supporting leg fixed bias circuit sequentially passes through the hollow rotation of rear support leg from back to front
Front support leg fixed bias circuit axis hole, rotation inclined-plane behind rotation inclined-plane after axis, rotation ramp bracket on the floor side member of front longitudinal beam
After rear support leg fixed bias circuit before spiral shell retainer ring, rotation inclined-plane front support leg fixed bias circuit after spiral shell retainer ring, rotation ramp bracket
Front support leg fixed bias circuit axis hole and front support leg hollow rotating shaft are to suitable behind rotation inclined-plane on the front longitudinal beam of front longitudinal beam
Position, spiral shell retainer ring is oblique by the floor side member of front longitudinal beam after rotation ramp bracket and rotation after rotating inclined-plane rear support leg fixed bias circuit
Beginning supporting leg fixed bias circuit spiral shell in face is stuck, and spiral shell retainer ring will rotate inclined-plane before rotating inclined-plane front support leg fixed bias circuit
The front longitudinal beam of front longitudinal beam is stuck with rotation inclined-plane beginning supporting leg fixed bias circuit spiral shell after bracket；Vernier scale disk is from main ruler disk
Lateral edge rotation inclined-plane beginning supporting leg fixed bias circuit direction is inserted in axis and is clamped using vernier scale valve snail retainer ring spiral shell, trip outside chassis
Scale disk matches on the inside of main ruler disk and with main ruler disk chassis surface；Vernier scale plate edge be respectively arranged with left vernier scale with
Right vernier scale, left vernier scale is symmetrical about the center of circle with right vernier scale, and main scale is provided in main ruler disk.
As preferred: left vernier scale, the outer rim of right vernier scale and main scale inner edge coincide, and main scale metrics range is 0 °~
360 °, vernier scale precision is 0 '~30 '.
As preferential: rotation inclined-plane, rotation inclined-plane beginning supporting leg and main ruler disk surround rotation inclined-plane as a whole
Beginning supporting leg fixed bias circuit is consolidated after going to a certain inclination angle with rotation inclined-plane fixed link, and inclined-plane fixed link beginning is rotated
Rotation is fixed in the rotation inclined-plane fixed link rotation axis of rotation Beveled ends, and the rotation inclined-plane rotated in inclined-plane fixed link is fixed
Bar sliding slot be placed on rotation ramp bracket after front longitudinal beam rotation inclined-plane fixed link slide-bar on, rotation inclined-plane fixed link slide-bar housing
One rotation inclined-plane fixed link fixture block.
As preferred: being spirally connected on rotation inclined-plane fixed link fixture block outer surface, rotation inclined-plane fixed link slide-bar extending direction
One rotation inclined-plane fixed link hold-doun nut, it is solid using rotation inclined-plane fixed link after rotation inclined-plane fixed link collapsing length is fixed
Determine nut rotation inclined-plane fixed link fixture block is connected in rotation inclined-plane fixed link.
As preferred: rotation is provided with leveling spirit bubble on inclined-plane, rotates front longitudinal beam beginning and end point after ramp bracket
It is not provided with rotation inclined-plane leveling support leg, tests and is provided with experiment plane leveling spirit bubble in plane, test and be arranged under plane
There is experiment plane leveling support leg；Experiment plane leveling support leg is respectively placed in the leveling of the experiment plane on first base experiment cabinet
Before supporting leg rear slide and experiment plane leveling support leg on slideway, rotation ramp bracket is arranged with the leveling support of rotation inclined-plane
Leg, rotation inclined-plane leveling support leg are respectively placed in rotation inclined-plane leveling support leg rear slide and rotation on second base experiment cabinet
Before inclined-plane leveling support leg on slideway；Experiment plane be connected identical with the beginning for rotating inclined-plane state finally, change inclination angle of inclined plane
It is moved in the space that second base experiment cabinet coarse screw bar stretches neutral gear the end of coarse screw bar.
As preferred: experiment plane leveling support leg is identical as rotation inclined-plane leveling support leg structure, experiment plane leveling
Supporting leg is by experiment plane levelling shoe pedestal, experiment plane leveling threaded rod, experiment plane leveling support leg jacking sleeve, reality
It tests plane leveling support leg oscilaltion bar and experiment plane leveling support leg and pedestal joint face forms, rotation inclined-plane leveling branch
Support leg is by rotation inclined-plane levelling shoe pedestal, rotation inclined-plane leveling threaded rod, rotation inclined-plane leveling support leg jacking sleeve, rotation
Inclined-plane leveling support leg oscilaltion bar and rotation inclined-plane leveling support leg and pedestal joint face form.
The beneficial effects of the utility model are:
(1) inclination angle of inclined plane screw rod beginning will be changed to be directly connected to rotation bevel termination, rotation inclined-plane fixed link beginning is straight
Switch through dynamic be fixed on to rotate on Beveled ends corresponding position, be allowed to more than rotation inclined-plane without protrusion, experimenter behaviour
Make and reading data are very convenient.
(2) inclination angle of inclined plane coarse screw bar bung flange will be changed to be arranged in lower end, and embedding with coarse screw bar bottom end fixed bias circuit
Set sliding rotation connection is promoted although realizing the rotation of coarse screw bar, and changes inclination angle of inclined plane coarse screw bar bung flange in situ
It remains unchanged, lift slope effect.
(3) the thin screw rod bung flange of inclination angle of inclined plane will be changed to be arranged on screw rod top, i.e., as the rotation of rotation inclined-plane is promoted
And promoted, convenient for the final proper height fine tuning operation of experimenter, provide convenience for experimenter's operation.
(4) measuring scale system (containing main scale, vernier scale) used in measurement rotation inclined-plane is moved down from original inclined-plane beginning position
It to the fixed bracket endpoint in rotation inclined-plane, is allowed to there is no protrusion more than inclined-plane, provides convenience for experimenter's operation.
(5) connect using rotation inclined-plane supporting leg with main scale cavity ring, be allowed to rotate inclined-plane, supporting leg and main scale disk chassis and
Main ruler disk is linked together composition hollow rotating shaft, common turn be linked together around vernier scale disk and rotation inclined-plane fixed bias circuit
The angle that moving axis rotation, in this way rotation inclined-plane are turned over is exactly that main scale surrounds the angle that vernier scale disk turns over, which can lead to
It crosses and rotation inclined-plane initial position is obtained with position or so vernier scale difference of reading finally.
(6) experiment instrument bottom use pedestal experiment cabinet design structure, right pedestal experiment cabinet center be arranged to it is hollow, just
It is mobile in lift slope screw rod, while experiment instrument height is improved, facilitate experimenter's operation.
(7) rotation inclined-plane is rotated by supporting leg (wherein one end and main ruler disk cavity ring connect) around fixed bias circuit, with
And rotation fixed link in inclined-plane is dexterously separated from into pedestal experimental box two sides, be conducive to inclined-plane during changing inclination angle of inclined plane and turn
The movement of dynamic fixed link；
Detailed description of the invention
Fig. 1 is experiment instrument full figure front view；
Fig. 2 is experiment instrument pedestal experiment cabinet top view；
Fig. 3 is experiment instrument original state top view；
Fig. 4 is that experiment instrument rotation inclined-plane turns to a certain degree of tilt state front view；
Fig. 5 is to change inclination angle of inclined plane coarse screw bar bung flange and end rotation axis connection top view；
Fig. 6 is to change inclination angle of inclined plane screw rod, thickness bung flange and end to rotate axis connection front view；
Fig. 7 is rotation Beveled ends rotation axis and end retaining collar connection schematic diagram；
Fig. 8 nested fixing means schematic diagram between main ruler disk and vernier scale disk；
Fig. 9 is rotation inclined-plane beginning supporting leg and main scale disk chassis connection schematic diagram；
Figure 10 is front longitudinal beam, axis hole and middle stringer schematic diagram after rotation ramp bracket；
Figure 11 is fixedly connected with signal with vernier scale disk for front longitudinal beam, beginning supporting leg fixed bias circuit after rotation ramp bracket
Figure；
Figure 12 is vernier scale disk front view；
Figure 13 is rotation inclined-plane fixed link schematic diagram；
Figure 14 is front longitudinal beam fixing means schematic diagram after rotation inclined-plane fixed link slide-bar and rotation ramp bracket；
Figure 15 is front longitudinal beam and hold-doun nut connection schematic diagram after rotation inclined-plane fixed link, slide-bar, bracket；
Figure 16 is experiment porch (or rotation inclined-plane) leveling support leg front view；
Figure 17 is the round experiment block schematic diagram of production；
Figure 18 is frame of reference accuracy of reading schematic diagram；
Figure 19 is to rotate inclined-plane to go to the angle schematic diagram that Fig. 4 state main scale turns over from Fig. 1 state；
Figure 20 is that double vernier corrects not coaxial (eccentricity) schematic illustration；
Figure 21 is high-acruracy survey kinematics and static friction coefficient instance analysis schematic diagram on inclined-plane；
Figure 22 is that cylindrical body rolls stress diagram on inclined-plane.
Description of symbols: 1,1-1, first base experiment cabinet tests slideway before plane leveling support leg, 1-2, experiment are flat
2-1, face leveling support leg rear slide, 2, second base experiment cabinet rotate slideway before inclined-plane leveling support leg, 2-2, rotation inclined-plane
Leveling support leg rear slide, the flexible neutral gear of 2-3, second base experiment cabinet coarse screw bar, 3, experiment plane, 3-0, experiment plane tune
Flat spirit bubble, 3-1, experiment plane leveling support leg, 3-10, experiment plane levelling shoe pedestal, 3-11, experiment plane level spiral shell
Rasp bar, 3-12, experiment plane leveling support leg jacking sleeve, 3-13, experiment plane leveling support leg oscilaltion bar, 3-14,
Test plane leveling support leg and pedestal joint face, 4, front longitudinal beam after rotation ramp bracket, 4-1, rotation inclined-plane leveling support leg,
4-10, rotation inclined-plane levelling shoe pedestal, 4-11, rotation inclined-plane level threaded rod, 4-12, rotation inclined-plane leveling support leg lifting
Sleeve, 4-13, rotation inclined-plane leveling support leg oscilaltion bar, 4-14, rotation inclined-plane leveling support leg and pedestal joint face, 4-
15,5-0, front support leg fixed bias circuit axis hole behind rotation inclined-plane, 4-2, rotation ramp bracket middle cross beam, 5, rotation inclined-plane turn
Dynamic inclined-plane levels spirit bubble, 5-01, rear support leg hollow rotating shaft, 5-02, front support leg hollow rotating shaft, 5-1, rotation inclined-plane
Beginning supporting leg, 5-2, rotation inclined-plane beginning supporting leg fixed bias circuit, 5-20 rotate inclined-plane beginning rear support leg rotation axis, 5-
21, inclined-plane beginning front support leg rotation axis is rotated, 5-23, spiral shell retainer ring after 5-22, rotation inclined-plane rear support leg fixed bias circuit turns
Spiral shell retainer ring before dynamic inclined-plane front support leg fixed bias circuit, 5-3, rotation Beveled ends connect rotation axis, 5-4, rotation Beveled ends
Retaining collar, 5-41, rotation inclined-plane or so banding nut, 5-43, rotation inclined-plane left-right rotation shaft sleeve, 5-44, rotation inclined-plane
Lock screw blocking in left and right is convex, 5-5, the fixed bung flange of rotation Beveled ends retaining collar, 6, vernier scale disk, 6-1, left vernier scale,
6-2, right vernier scale, 6-3, vernier scale valve snail retainer ring, 7, main ruler disk, 7-0, main scale disk chassis, 7-1, main scale, 8, rotation inclined-plane it is solid
Fixed pole, 8-1, rotation inclined-plane fixed link sliding slot, 8-2, rotation inclined-plane fixed link hold-doun nut, 8-3, rotation inclined-plane fixed link are sliding
Axis, 8-31, slide-bar stock, 8-32, slide-bar fixed thread, 8-33, fixed fixture block nut fixed thread, 8-4, rotation inclined-plane fixed link
9-1, fixture block, 8-5, rotation inclined-plane fixed link rotation axis, 9, change inclination angle of inclined plane coarse screw bar change the thin spiral shell of inclination angle of inclined plane fine motion
9-3, screw rod changes inclination angle of inclined plane fine motion mobile bar, 9-4, changes inclination angle of inclined plane screw tip, 10, the change thick spiral shell of inclination angle of inclined plane
10-1, screw rod bung flange changes inclination angle of inclined plane coarse screw bar bung flange handler, 10-10, changes inclination angle of inclined plane coarse screw bar bung flange set
Groove is enclosed, 11-1,11, change inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit change inclination angle of inclined plane coarse screw bar bung flange set
11-11, circle changes inclination angle of inclined plane or so banding nut, 11-12 changes inclination angle of inclined plane left-right rotation shaft sleeve, 11-44, change
Inclination angle of inclined plane or so lock screw stops convex, 12, the change thin screw rod bung flange of inclination angle of inclined plane, 12-1, the change thin spiral shell of inclination angle of inclined plane
Screw rod bung flange handler.
Specific embodiment
The utility model is described further below with reference to embodiment.The explanation of following embodiments is only intended to help to manage
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model
In scope of protection of the claims.
It includes first base experiment cabinet 1, the second bottom that mechanical fine motion inclined-plane, which measures friction coefficient experiment instrument,
Front longitudinal beam 4, rotation inclined-plane 5, vernier scale disk 6, main ruler disk 7, rotation are oblique after seat experiment cabinet 2, experiment plane 3, rotation ramp bracket
Face fixed link 8 changes inclination angle of inclined plane coarse screw bar 9, changes inclination angle of inclined plane coarse screw bar bung flange 10, changes inclination angle of inclined plane coarse screw
Bar bottom end fixed bias circuit 11 changes the thin screw rod bung flange 12 of inclination angle of inclined plane.Rotation inclined-plane 5 is with the size for testing plane 3
500mm(L)×300mm(B)×5mm(H)；Through being about 200mm outside main ruler disk 7,7 internal diameter of main ruler disk is about 180mm, vernier scale disk
6 diameters are about 179.98mm.
It is connected respectively with rotation inclined-plane beginning supporting leg 5-1 before behind rotation 5 beginning of inclined-plane, rotates inclined-plane beginning supporting leg 5-
1 lower end is respectively arranged with rear support leg hollow rotating shaft 5-01 and front support leg hollow rotating shaft 5-02, and hollow turn of front support leg
Moving axis 5-02 ring corresponding with the main scale center disk chassis 7-0 is affixed, and main scale disk chassis 7-0 coincide affixed at one with 7 periphery of main ruler disk
Body, rotation inclined-plane 5, rotation inclined-plane beginning supporting leg 5-1, main scale disk chassis 7-0 and main ruler disk 7 are fixed into an entirety, such as Fig. 9
It is shown.
Rotation inclined-plane beginning supporting leg fixed bias circuit 5-2 sequentially passes through rear support leg hollow rotating shaft 5- from back to front
01, front support leg fixed bias circuit axis hole 4-15, rotation behind the rotation inclined-plane after rotation ramp bracket on the floor side member of front longitudinal beam 4
Spiral shell retainer ring 5-22 after inclined-plane rear support leg fixed bias circuit, spiral shell retainer ring 5-23 before rotation inclined-plane front support leg fixed bias circuit, turn
Front support leg fixed bias circuit axis hole 4-15 and front support leg behind rotation inclined-plane after dynamic ramp bracket on the front longitudinal beam of front longitudinal beam 4
Hollow rotating shaft 5-02 is to suitable position, and spiral shell retainer ring 5-22 will rotate ramp bracket after rotating inclined-plane rear support leg fixed bias circuit
The floor side member of front longitudinal beam 4 is stuck with rotation inclined-plane beginning supporting leg fixed bias circuit 5-2 spiral shell afterwards, rotates inclined-plane front support leg
Spiral shell retainer ring 5-23 fixes the front longitudinal beam of front longitudinal beam 4 after rotation ramp bracket with rotation inclined-plane beginning supporting leg before fixed bias circuit
Rotation axis 5-2 spiral shell is stuck, the fixed rotation of lateral edge rotation inclined-plane beginning supporting leg outside main scale disk chassis 7-0 of vernier scale disk 6
Axis 5-2 is inserted in direction axis and is clamped using vernier scale valve snail retainer ring 6-3 spiral shell, vernier scale disk 6 and 7 inside of main ruler disk and and main scale
The surface disk chassis 7-0 matches, and vernier scale disk 6 can be freely rotated on the inside of main ruler disk 7；It is set respectively at 6 edge of vernier scale disk
It is equipped with left vernier scale 6-1 and right vernier scale 6-2, left vernier scale 6-1 symmetrically (is differed with right vernier scale 6-2 about the center of circle
180 °), main scale 7-1 is provided in main ruler disk 7, the outer rim of left vernier scale 6-1, right vernier scale 6-2 on vernier scale disk 6 and master
The inner edge ruler 7-1 coincide, and main scale 7-1 and the cooperation of left and right vernier scale are read, and main scale 7-1 metrics range is 0 °~360 °, vernier scale essence
Degree is 0 '~30 ', 30 lattice arc length (α of vernier scale14.5°) with the 29 lattice arc length (β of main scale 7-115°- 0.5 °) it is equal, i.e., main scale
The degree 30 ' (0.5 °) of 1 lattice on 7-1 has been assigned in 30 lattice on vernier scale, and every lattice on vernier scale are 1 ', i.e. reading system
The precision of system is 1 '；As shown in Fig. 8,9,10,11,12,18.
Rotation 5 end of inclined-plane is provided with rotation Beveled ends connection rotation axis 5-3, rotation Beveled ends connect rotation axis
5-3 covers in rotation inclined-plane left-right rotation shaft sleeve 5-43, and rotation Beveled ends connection rotation axis 5-3 can be on rotation inclined-plane or so
It is freely rotated in rotation axis sleeve 5-43, connects in the rotation Beveled ends close to rotation one end inclined-plane left-right rotation shaft sleeve 5-43
Switch through and be provided with rotation inclined-plane or so lock screw convex 5-44 of blocking on moving axis 5-3, stops in rotation inclined-plane or so lock screw
Rotation inclined-plane or so banding nut 5-41 is provided on the inside of convex 5-44, it, can be by turning after rotation 5 tilt adjustment of inclined-plane determines
Dynamic inclined-plane or so banding nut 5-41 will rotate Beveled ends connection rotation axis 5-3 and be fixed to rotation inclined-plane left-right rotation shaft sleeve
On 5-43, the connected rotation Beveled ends retaining collar 5-4 of rotation axis 5-3 is connect with rotation Beveled ends and is socketed on change inclined-plane
On the inside of the screw tip 9-4 of inclination angle and using the fixed bung flange 5-5 locking of rotation Beveled ends retaining collar, change inclination angle of inclined plane screw rod
The thin sliding of screw rod bung flange 12 rotation of the change inclination angle of inclined plane fine motion mobile bar 9-3 and change inclination angle of inclined plane of the top lower end 9-4 connects
It connects, changes the thin screw rod bung flange handler 12-1 of inclination angle of inclined plane and be integral with the thin screw rod bung flange 12 of inclination angle of inclined plane is changed, changed
Become thin 12 lower end of screw rod bung flange of inclination angle of inclined plane and changes the thin spiral shell of change inclination angle of inclined plane fine motion of 9 upper end of inclination angle of inclined plane coarse screw bar
Screw rod 9-1 is spirally connected (in the thin screw region for changing 9 upper end of inclination angle of inclined plane coarse screw bar), changes 9 spiral shell of inclination angle of inclined plane coarse screw bar
Across inclination angle of inclined plane coarse screw bar bung flange 10 is changed, lower end extends to the thick spiral shell of second base experiment cabinet of second base experiment cabinet 2
Screw rod stretches in neutral gear 2-3, and the change inclination angle of inclined plane coarse screw bar bung flange lasso for changing inclination angle of inclined plane coarse screw bar bung flange 10 is recessed
The change inclination angle of inclined plane coarse screw bar bung flange set for changing inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit 11 is placed in slot 10-10
It encloses in 11-1, changing inclination angle of inclined plane coarse screw bar bung flange handler 10-1 with inclination angle of inclined plane coarse screw bar bung flange 10 is changed is one whole
Body changes inclination angle of inclined plane coarse screw bar bung flange 10 and is changing sliding rotation in inclination angle of inclined plane coarse screw bar bung flange lasso 11-1, from
And it drives change inclination angle of inclined plane coarse screw bar 9 to be rotated up promotion, change inclination angle of inclined plane coarse screw bar bung flange lasso 11-1 and changes
Become inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit 11 to be integral, changes inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit
11 sets are changing in inclination angle of inclined plane left-right rotation shaft sleeve 11-12, change the inclination angle of inclined plane left-right rotation both ends shaft sleeve 11-12 point
It is corresponding not affixed with the rear front end of 4 end of front longitudinal beam after rotation ramp bracket, change fixed turn of inclination angle of inclined plane coarse screw bar bottom end
Moving axis 11 is being respectively arranged with change inclination angle of inclined plane or so locking close to the change inner end inclination angle of inclined plane left-right rotation shaft sleeve 11-12
Screw stops convex 11-44, is changing change inclination angle of inclined plane of inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit 11 or so locking
Screw, which stops to be provided on the inside of convex 11-44, changes inclination angle of inclined plane or so banding nut 11-11, when rotation 5 tilt adjustment of inclined-plane is true
After fixed, it can will change inclination angle of inclined plane coarse screw bar bottom end rotation axis 11 by changing inclination angle of inclined plane or so banding nut 11-11
It is fixed to and changes on inclination angle of inclined plane left-right rotation shaft sleeve 11-12；As shown in Fig. 1,2,5,6,7.
Inclined-plane 5, rotation inclined-plane beginning supporting leg 5-1 and main ruler disk 7 are rotated as a whole around rotation inclined-plane beginning
After supporting leg fixed bias circuit 5-2 goes to a certain inclination angle, it need to be consolidated using rotation inclined-plane fixed link 8, rotation inclined-plane is fixed
The rotation of 8 beginning of bar is fixed on the rotation inclined-plane fixed link rotation axis 8-5 of rotation 5 end of inclined-plane, is rotated in inclined-plane fixed link 8
Rotation inclined-plane fixed link sliding slot 8-1 be placed on rotation ramp bracket after front longitudinal beam 4 rotation inclined-plane fixed link slide-bar 8-3 on, turn
The rotation inclined-plane fixed link slide-bar 8-3 housing one of dynamic inclined-plane fixed link 8 rotates inclined-plane fixed link fixture block 8-4, and rotation inclined-plane is fixed
Bar fixture block 8-4 will rotate the encirclement of inclined-plane fixed link 8 and therebetween can be free to slide, in rotation inclined-plane fixed link fixture block 8-4 appearance
Be spirally connected a rotation inclined-plane fixed link hold-doun nut 8-2 on face, rotation inclined-plane fixed link slide-bar 8-3 extending direction, when rotation inclined-plane
After 8 collapsing length of fixed link is fixed, inclined-plane fixed link fixture block 8- can will be rotated using rotation inclined-plane fixed link hold-doun nut 8-2
4 are connected in rotation inclined-plane fixed link 8, make a firm entirety；As shown in Fig. 1,3,4,13,14,15.
Leveling spirit bubble 5-0 is provided on rotation inclined-plane 5,4 beginning of stringer and end point before and after rotating ramp bracket
Experiment plane leveling spirit bubble 3-0 She Zhi not be provided in experiment plane 3 there are four inclined-plane leveling support leg 4-1 is rotated,
Experiment plane 3 is arranged with four experiment plane leveling support leg 3-1, experiment plane leveling support leg 3-1 and rotation inclined-plane branch
Four lower rotation inclined-plane leveling support leg 4-1 structures of stringer 4 are just the same before and after frame, test plane leveling support leg 3-1 by
Test plane levelling shoe pedestal 3-10, experiment plane leveling threaded rod 3-11, experiment plane leveling support leg jacking sleeve 3-
12, plane leveling support leg oscilaltion bar 3-13, experiment plane leveling support leg and pedestal joint face 3-14 are tested to form, is turned
Dynamic inclined-plane leveling support leg 4-1 is by rotation inclined-plane levelling shoe pedestal 4-10, rotation inclined-plane leveling threaded rod 4-11, rotation inclined-plane
Leveling support leg jacking sleeve 4-12, rotation inclined-plane leveling support leg oscilaltion bar 4-13, rotation inclined-plane leveling support leg with
Pedestal joint face 4-14 composition, as shown in Fig. 1,3,16；When experiment, four experiment plane leveling support leg 3-1 are individually placed to
Before experiment plane leveling support leg rear slide 1-2 and experiment plane leveling support leg on one pedestal experiment cabinet 1 on slideway 1-1,
Four rotation inclined-plane leveling support leg 4-1 are individually placed to the rotation inclined-plane leveling support leg rear slide on second base experiment cabinet 2
Before 2-2 and rotation inclined-plane leveling support leg on slideway 2-1, the beginning of experiment plane 3 and rotation inclined-plane 5 state finally is strictly connected
It coincide, whole process changes the end of inclination angle of inclined plane coarse screw bar 9 in the flexible neutral gear 2-3 of second base experiment cabinet coarse screw bar
Space in mobile variation, as shown in Fig. 1,4,16.
One, using double vernier rectifying eccentricity rate principle
As shown in figure 20, since the instrument calibration center disk main scale 7-1 (geometric center) and live spindle are not necessarily completely heavy
It closes (there is centering error), therefore rotates inclined-plane 5 during rotation, always (instrument misses there are error from reading on single micro- ruler
Difference), 5 inclination angle of inclined-plane is rotated for measurement, designs and is symmetrically installed two vernier scales, so that it may correct the instrument as caused by centering error
Device error.If O is 7 geometric center of main scale 7-1 and main ruler disk, O1To rotate inclined-plane low side fixed bias circuit center, due to the two
It is not necessarily overlapped, according to left and right vernier scale, the initial reading before rotation inclined-plane 5 rotates is read from left and right vernier scale is respectively
θA left side 1、θThe right side 1, it is respectively θ that rotation inclined-plane 5, which goes to the micro- ruler final reading in a certain inclination angle or so,A left side 2、θThe right side 2, then the angle of the rotation of inclined-plane 5 is rotated
Are as follows:
It proves: as shown in figure 20, if the geometric center of main ruler disk 7 is overlapped with rotation inclined-plane low side fixed bias circuit center
The center of circle is O, and when not being overlapped, rotation inclined-plane low side fixed bias circuit center is O1, crossing O and doing two diameters is respectively AB and CD, crosses O1It does
EF//AB and JH//CD, it can be seen that as long as two centers are overlapped, the reading AC arc length or BD arc length that any one vernier scale is read are equal
It is error free, if two centers are not overlapped, read as EJ arc length or HF arc length, two arc length are inaccurate；By EA arc length=FB arc length, JC
Arc length=HD arc length, then:
AC arc length=BD arc length=(AJ+JC) arc length=(DF+FB) arc length=(AJ+HD) arc length=(DF+EA) arc length
Therefore, (1) formula is set up.I.e. instrument calibration disk main scale 7-1 geometric center and rotation inclined-plane low side fixed bias circuit not
It when being centainly completely coincident, is read using double vernier ruler, and is calculated using (1) formula, so that it may which accurate measurement rotation inclined-plane 5 is around low
The angle that end fixed bias circuit turns over.
Two, the adjusting method of mechanical fine motion inclined-plane measurement friction coefficient experiment instrument
(1) the rotation inclined-plane leveling support leg on adjustment base four first rotation inclined-plane leveling support leg 4-1 goes up and down set
Cylinder 4-12, change inclination angle of inclined plane coarse screw bar bung flange 10, change the thin screw rod bung flange 12 of inclination angle of inclined plane, making to rotate inclined-plane leveling water
Flat bubble 5-0 is in circle center, i.e. rotation inclined-plane 5 is in horizontality, reads A, B window initial reading on vernier scale disk 6 respectively
α1、β1；If measuring dynamic friction coefficient, the level of experiment plane 3 is also adjusted, that is, passes through four of adjusting experiment plane 3
The experiment plane leveling support leg jacking sleeve 3-12 for testing plane leveling support leg 3-1 makes to test plane leveling spirit bubble 3-0
In circle center, i.e. experiment plane 3 is in horizontality.As shown in Figure 1,3；
(2) material of kinematics and static friction force coefficient to be measured is made into the same size plate that matches with experiment instrument, and is pacified
It is filled to pre-designed corresponding position, makes diameter 50.00mm, (its center band has carefully the round slider of thickness 10.00mm
Hole), and the sliding block is put on the predeterminated position on rotation inclined-plane 5；
(3) make to rotate the change inclination angle of inclined plane coarse screw bar bung flange 10 on inclined-plane screw rod and change inclination angle of inclined plane coarse screw bar
It is persistently rotated in bung flange lasso 11-1, changing inclination angle of inclined plane coarse screw bar 9 can change in inclination angle of inclined plane coarse screw bar bung flange 10
Movement is continued upward, after being put in rotation inclined-plane material round slider sliding, then inclination angle of inclined plane coarse screw bar bung flange will be changed
10 retract it is a little, be allowed to the material sliding block it is just static until, then rotation changes the thin screw rod bung flange 12 of inclination angle of inclined plane, make to
It measures and monitor the growth of standing timber and expects that sliding block is just slightly moved along rotation inclined-plane 5, sliding block gravity is equal to the material along the sliding force on inclined-plane at this time
Maximum static friction force F of the sliding block quality relative to inclined-planei, as shown in figure 21；
(4) reading rotation inclined-plane 5 to go to A, B window reading of a certain angle by measuring scale system is respectively α2、β2, then rotate
Angle that inclined-plane 5 turns over (i.e. rotation 5 relative level inclination angle of inclined-plane) isSuch as figure
Shown in 19；
(5) in specific experiment, also the connection of rotation Beveled ends is turned using rotation inclined-plane or so banding nut 5-41
Moving axis 5-3 and rotation inclined-plane left-right rotation shaft sleeve 5-43 locking, are changed using changing 11-11, inclination angle of inclined plane or so banding nut
Become inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit 11 and changes inclination angle of inclined plane left-right rotation shaft sleeve 11-12 locking, and
The inclined-plane rotation fixed link hold-doun nut 8-2 of inclined-plane rotation fixed link 8 is tightened, to meet the overall stability of measuring device.Together
When, if also to measure kinetic force of friction coefficient, it is also necessary to rotation 5 beginning of inclined-plane be allowed to be identical with the beginning for testing plane 3.
Three, the example measurement of mechanical fine motion inclined-plane measurement friction coefficient experiment instrument
(1) it adjusts first after rotating ramp bracket on four rotation inclined-plane leveling support leg 4-1 at 4 whole story end of front longitudinal beam
Inclined-plane leveling support leg jacking sleeve 4-12 is rotated, inclination angle of inclined plane coarse screw bar bung flange 10 is changed and changes inclination angle of inclined plane filament spiral shell
Bar bung flange 12, rotation inclined-plane leveling spirit bubble 5-0 be in circle center, make rotate inclined-plane 5 be in horizontality, respectively reading A,
B window initial reading is α1=194 ° 22 ', β1=15 ° 30 ', as shown in Fig. 1,3 (rotation 5 horizontal initial positions of inclined-plane)；If wanted
Dynamic friction coefficient is measured, the level of experiment plane 3, i.e. four experiment planes leveling by adjusting experiment plane 3 are also adjusted
The experiment plane leveling support leg jacking sleeve 3-12 of supporting leg 3-1 is in experiment plane leveling spirit bubble 3-0 in circle
Centre makes experiment plane 3 be in horizontality；
(2) material of kinematics and static friction force coefficient to be measured is made into the same size plate that matches with experiment instrument, and is pacified
It is filled to pre-designed corresponding position, makes diameter 50.00mm, thickness 10.00mm round slider (its center band has pore),
And the sliding block is put on the predeterminated position on rotation inclined-plane 5；
(3) the rotation inclined-plane of Beveled ends connection rotation axis 5-3 or so banding nut 5-41, change inclination angle of inclined plane will be rotated
The change inclination angle of inclined plane of coarse screw bar bottom end fixed bias circuit 11 or so banding nut 11-11 and inclined-plane rotate fixed link 8
Inclined-plane rotation fixed link hold-doun nut 8-2 loosens, and is changing the change inclination angle of inclined plane coarse screw bar bung flange 10 rotated on screw rod
It is persistently rotated in inclination angle of inclined plane coarse screw bar bung flange lasso 11-1, inclination angle of inclined plane can changed by changing inclination angle of inclined plane coarse screw bar 9
Rotation movement is continued upward in coarse screw bar bung flange 10, after certain material round slider sliding wait be put at rotation inclined-plane 5, then will
Change inclination angle of inclined plane coarse screw bar bung flange 10 to retract a little, until keeping the material sliding block just static, then rotation change inclined-plane
The thin screw rod bung flange 12 in inclination angle moves detected materials sliding block just slightly along rotation inclined-plane 5, and sliding block gravity is along oblique at this time
The sliding force in face is equal to maximum static friction force F of the quality of materials sliding block relative to inclined-planei, as shown in figure 21；
(4) it is respectively by the reading that measuring scale system reading inclined-plane goes to a certain inclination angle (i.e. angle with horizontal plane) A, B window
α2=235 ° 8 ', β2=5 ° 17 ', then rotating the angle (i.e. angle between rotation inclined-plane and horizontal plane) that inclined-plane turns over isAs shown in figure 19；
(5) in specific experiment, also the connection of rotation Beveled ends is turned using rotation inclined-plane or so banding nut 5-41
Moving axis 5-3 and rotation inclined-plane left-right rotation shaft sleeve 5-43 locking, are changed using changing 11-11, inclination angle of inclined plane or so banding nut
Become inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit 11 and changes inclination angle of inclined plane left-right rotation shaft sleeve 11-12 locking, and
The inclined-plane rotation fixed link hold-doun nut 8-2 of inclined-plane rotation fixed link 8 is tightened, to meet the overall stability of measuring device.Together
When, if also to measure kinetic force of friction coefficient, it is also necessary to rotation 5 beginning of inclined-plane be allowed to be identical with the beginning for testing plane 3.
(6) in specifically measurement kinetic force of friction coefficient experiment, the sliding block on inclined-plane can be fabricated to circle, and beat in its center of circle
Perpendicular to disc pore, when being tested using sliding block, position facilitates trace mark finally for initial position and movement, then uses vernier
Slide calliper rule measure sliding block moving distance；
(7) the stiction coefficient (μ of respective material is measureds)；
(8) the kinetic force of friction coefficient (μ of respective material is measuredk)。
Four, actual measurement mechanical analysis and the derivation of equation
(1) measurement of confficient of static friction
It is equipped using the design, as long as respective material is made into size identical as its experiment plane of rotation inclined-plane 5 and is installed.
Sliding block is made by suitable dimension, and puts it into the corresponding position on inclined-plane 5 to be rotated.If sliding block and two surface of contact position are each other
Static, two interfacial contact places will form a stronger binding force --- stiction, unless destroying the binding force ability
The relatively another surface in the surface is moved, destroys this binding force to realize --- the vertical force of power before movement to its surface
Ratio be referred to as confficient of static friction μsIf fsFor stiction, F2For vertical force, which is also to start the object
Maximum, force, i.e. maximum static friction force, are formulated are as follows:
fs=μsF2(2)
Sliding block on rotation inclined-plane 5 can be decomposed into along the component F being parallel on inclined-plane by we1With perpendicular to oblique
Face component F2, i.e.,
Fi=mgsin α (3)
Fj=mgsin α (4)
During rotating inclined-plane 5 and rotating, if sliding block just glides along inclined-plane, the inclination alpha on inclined-plane at this time0, at this time
Sliding force F1(α0) just with stiction fsIt is identical, it is F perpendicular to the power on inclined-plane2(α0) obtained by (2) formula and (3) formula:
As shown in figure 21.
(2) measurement of dynamic friction coefficient
Rotation inclined-plane 5 goes to a certain angle [alpha]1, due to α1> α0, sliding block is put in inclined-plane position (l), due to gravitational potential
Can effect, start to glide at sliding block this this, move to surface bottom, slided in entire motion process in the horizontal direction again
Frictional force effect, direction is contrary with slide block movement, finally slides to along the horizontal plane static at s.If friction coefficient muk,
Away from the bottom of the slope position l (use vernier caliper measurement), potential energy mglsin α possessed by the sliding block of initial position0, sliding block is oblique
Resistance work done f in the sliding process of facekL=μkFj0=μkmgcosα0, sliding block moves to s (using vernier calliper from the bottom of the slope
Ruler measurement) at, resistance work done mgs.It is obtained according to law of conservation of energy:
mglsinα0=μklmgcosα0+mgμks(6)
It can thus be concluded that the coefficient of sliding friction is
μk=l/ (lcos α0+s)sinα0(7)
It can also prove that confficient of static friction is greater than dynamic friction coefficient by as above measuring as a result,.I.e.
μs> μk(8)
As shown in figure 21.
(3) cylinder rigid body rolls application on inclined-plane
If cylindrical Rigid Mass is m, radius r, the rotary inertia around center axis is J.Using Novel machine
The tool dynamic inclined-plane measurement friction coefficient experiment instrument that declines is tested, and carries out corresponding operating according to its step, when cylindrical body is oblique
When making pure rolling on face, the translation of mass center and the rotation around mass center can be regarded as, stress condition, as shown in figure 22.
It is obtained by center of mass motion law and law of rotation
Mgsin θ-f=ma (9)
Fr=J β (10)
And ac=βcR, a in formulacFor the translatory acceleration of mass center, βcFor the angular acceleration of rotation around center of mass, obtain
If the length on inclined-plane is l.The speed and rolling of mass center when then cylindrical body is rolled to bottom by top since static
Time is
With phase homogenous quantities and radius, but when the different cylindrical body of rotary inertia makees pure rolling from same inclined-plane, matter
Speed and required time when heart acceleration obtained, movement same distance are all different, and rotary inertia J is bigger, matter
The speed when acceleration and movement same distance of the heart is smaller, but it is then longer to move the time required for same distance.
Five, the precision analysis of the example measurement of mechanical fine motion inclined-plane measurement friction coefficient experiment instrument
1, to the precision analysis of stiction coefficient
To formula (5) μs=tan α0It carries out differential and obtains μ 's=(sec2α0)α′0.Allow μ 's=Δ μs、α0'=Δ α0, then test
The corresponding error of result be
Δμs=(sec2α0)Δα0(14)
Wherein:
2, to the precision analysis of kinetic force of friction coefficient
To formula (7) μk=l/ (lcos α0+s)·sinα0Differential is carried out to obtain
Allow μ 'k=Δ μk, α0'=Δ α0.Then the corresponding instrument error of experimental result is
Wherein:L, s is constant.
3, to the precision analysis of rolling friction force coefficient
(1) to the precision analysis of Mass Center of Circular Column speed
To formula (12)Differential is carried out to obtainAllow v '0
=Δ v0, then Mass Center of Circular Column velocity error is θ '=Δ θ
(2) to the precision analysis of Mass Center of Circular Column rolling time
To formula (13)Differential obtainsAllow t '
=Δ t, θ '=Δ θ, then cylindrical body rolling time error be
Wherein:For determining cylindrical body, l, m, r, J, g are constant.
Mechanical fine motion inclined-plane measures friction coefficient experiment instrument in measurement stiction coefficient, kinetic force of friction coefficient
And during Mass Center of Circular Column speed and time, institute's measuring angle precision is enabled to reach 1 ', and corresponding institute
It surveys parameter precision and reaches (14), (16), (17), (18) precision achieved.
Claims (8)
1. a kind of mechanical fine motion inclined-plane measures friction coefficient experiment instrument, it is characterised in that: tested including first base
Front longitudinal beam (4), rotation inclined-plane (5), vernier after cabinet (1), second base experiment cabinet (2), experiment plane (3), rotation ramp bracket
Ruler disk (6), rotation inclined-plane fixed link (8), changes inclination angle of inclined plane coarse screw bar (9), changes the thick spiral shell of inclination angle of inclined plane main ruler disk (7)
Screw rod bung flange (10) changes inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit (11) and changes the thin screw rod bung flange of inclination angle of inclined plane
(12)；
Rotation inclined-plane (5) end is provided with rotation Beveled ends connection rotation axis (5-3) and covers in rotation inclined-plane left-right rotation
In shaft sleeve (5-43), rotation axis is connected in the rotation Beveled ends close to rotation one end inclined-plane left-right rotation shaft sleeve (5-43)
It is provided with rotation inclined-plane or so lock screw on (5-3) and stops convex (5-44), stops convex (5- in rotation inclined-plane or so lock screw
44) inside is provided with rotation inclined-plane or so banding nut (5-41), after rotation inclined-plane (5) tilt adjustment determines, passes through rotation
Inclined-plane or so banding nut (5-41) will rotate Beveled ends connection rotation axis (5-3) and be fixed to rotation inclined-plane left-right rotation axle sleeve
On cylinder (5-43)；
The connected rotation Beveled ends retaining collar (5-4) of rotation axis (5-3), which is connect, with rotation Beveled ends is socketed on change tiltedly
On the inside of face inclination angle screw tip (9-4) and using rotation Beveled ends retaining collar fixed bung flange (5-5) locking, changes inclined-plane and incline
The change inclination angle of inclined plane fine motion mobile bar (9-3) and the change thin screw rod bung flange of inclination angle of inclined plane of the lower end angle screw tip (9-4)
(12) sliding rotation connection changes the thin screw rod bung flange handler (12-1) of inclination angle of inclined plane and changes the thin screw rod spiral shell of inclination angle of inclined plane
Circle (12) is integral, and is changed thin screw rod bung flange (12) lower end of inclination angle of inclined plane and is changed inclination angle of inclined plane coarse screw bar (9) upper end
The thin screw rod of change inclination angle of inclined plane fine motion (9-1) be spirally connected；Change inclination angle of inclined plane coarse screw bar (9) spiral shell and passes through change inclination angle of inclined plane
Coarse screw bar bung flange (10), lower end extend to the flexible neutral gear of second base experiment cabinet coarse screw bar of second base experiment cabinet (2)
In (2-3), change the change inclination angle of inclined plane coarse screw bar bung flange lasso groove (10-10) of inclination angle of inclined plane coarse screw bar bung flange (10)
Inside it is placed on the change inclination angle of inclined plane coarse screw bar bung flange lasso for changing inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit (11)
In (11-1), changing inclination angle of inclined plane coarse screw bar bung flange handler (10-1) with inclination angle of inclined plane coarse screw bar bung flange (10) are changed is
One is whole, changes inclination angle of inclined plane coarse screw bar bung flange (10) and is changing sliding in inclination angle of inclined plane coarse screw bar bung flange lasso (11-1)
Rotation changes inclination angle of inclined plane coarse screw bar bung flange lasso (11-1) and changes inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit
(11) it is integral；
Change inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit (11) to cover in change inclination angle of inclined plane left-right rotation shaft sleeve (11-
12) in, change the both ends inclination angle of inclined plane left-right rotation shaft sleeve (11-12) respectively with rotation ramp bracket after front longitudinal beam (4) end
Rear front end correspond to affixed, change inclination angle of inclined plane coarse screw bar bottom end fixed bias circuit (11) close to changing inclination angle of inclined plane or so
The inner end rotation axis sleeve (11-12), which is respectively arranged with, changes inclination angle of inclined plane or so lock screw blocking convex (11-44), changes inclined-plane
Inclination angle or so lock screw, which stops to be provided on the inside of convex (11-44), changes inclination angle of inclined plane or so banding nut (11-11), works as rotation
After inclined-plane (5) tilt adjustment determines, inclination angle of inclined plane coarse screw will be changed by changing inclination angle of inclined plane or so banding nut (11-11)
Bar bottom end rotation axis (11), which is fixed to, to be changed on inclination angle of inclined plane left-right rotation shaft sleeve (11-12).
2. mechanical fine motion according to claim 1 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: turn
It is connected respectively with rotation inclined-plane beginning supporting leg (5-1) before behind dynamic inclined-plane (5) beginning, under rotation inclined-plane beginning supporting leg (5-1)
It holds and is respectively arranged with rear support leg hollow rotating shaft (5-01) and front support leg hollow rotating shaft (5-02), hollow turn of front support leg
Moving axis (5-02) ring corresponding with the main scale disk chassis center (7-0) is affixed, and main scale disk chassis (7-0) and main ruler disk (7) periphery coincide
It is affixed integral.
3. mechanical fine motion according to claim 1 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: turn
Dynamic inclined-plane beginning supporting leg fixed bias circuit (5-2) sequentially passes through rear support leg hollow rotating shaft (5-01), rotation from back to front
Front support leg fixed bias circuit axis hole (4-15), rotation are oblique behind rotation inclined-plane after ramp bracket on the floor side member of front longitudinal beam (4)
Spiral shell retainer ring (5-22) after the rear support leg fixed bias circuit of face, spiral shell retainer ring (5-23) before rotation inclined-plane front support leg fixed bias circuit,
Front support leg fixed bias circuit axis hole (4-15) is with before behind rotation inclined-plane after rotation ramp bracket on the front longitudinal beam of front longitudinal beam (4)
Supporting leg hollow rotating shaft (5-02) is to suitable position, and spiral shell retainer ring (5-22) will turn after rotating inclined-plane rear support leg fixed bias circuit
The floor side member of front longitudinal beam (4) is stuck with rotation inclined-plane beginning supporting leg fixed bias circuit (5-2) spiral shell after dynamic ramp bracket, turns
Spiral shell retainer ring (5-23) will rotate the front longitudinal beam of front longitudinal beam (4) and rotation after ramp bracket before dynamic inclined-plane front support leg fixed bias circuit
Inclined-plane beginning supporting leg fixed bias circuit (5-2) spiral shell is stuck；Vernier scale disk (6) turns from main scale disk chassis (7-0) outer lateral edge
It is inserted in axis and is clamped using vernier scale valve snail retainer ring (6-3) spiral shell, vernier in dynamic direction inclined-plane beginning supporting leg fixed bias circuit (5-2)
Ruler disk (6) matches on the inside of main ruler disk (7) and with the surface main scale disk chassis (7-0)；Vernier scale disk (6) edge is respectively set
There are left vernier scale (6-1) and right vernier scale (6-2), left vernier scale (6-1) and right vernier scale (6-2) are symmetrical about the center of circle, main scale
Main scale (7-1) is provided on disk (7).
4. mechanical fine motion according to claim 3 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: left
Vernier scale (6-1), the outer rim of right vernier scale (6-2) and the main scale inner edge (7-1) coincide, and main scale (7-1) metrics range is 0 °~
360 °, vernier scale precision is 0 '~30 '.
5. mechanical fine motion according to claim 1 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: turn
Dynamic inclined-plane (5), rotation inclined-plane beginning supporting leg (5-1) and main ruler disk (7) are as a whole around the support of rotation inclined-plane beginning
Leg fixed bias circuit (5-2) is consolidated after going to a certain inclination angle with rotation inclined-plane fixed link (8), is rotated inclined-plane fixed link (8)
Beginning rotation is fixed in the rotation inclined-plane fixed link rotation axis (8-5) of rotation inclined-plane (5) end, is rotated inclined-plane fixed link (8)
In rotation inclined-plane fixed link sliding slot (8-1) be placed on rotation ramp bracket after front longitudinal beam (4) rotation inclined-plane fixed link slide-bar (8-
3) on, inclined-plane fixed link fixture block (8-4) is rotated in rotation inclined-plane fixed link slide-bar (8-3) housing one.
6. mechanical fine motion according to claim 5 inclined-plane measures friction coefficient experiment instrument, it is characterised in that:
Be spirally connected a rotation inclined-plane on rotation outer surface inclined-plane fixed link fixture block (8-4), rotation inclined-plane fixed link slide-bar (8-3) extending direction
Fixed link hold-doun nut (8-2) is fixed after rotation inclined-plane fixed link (8) collapsing length is fixed using rotation inclined-plane fixed link
Nut (8-2) will rotate inclined-plane fixed link fixture block (8-4) and be connected in rotation inclined-plane fixed link (8).
7. mechanical fine motion according to claim 1 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: turn
Leveling spirit bubble (5-0) is provided on dynamic inclined-plane (5), front longitudinal beam (4) beginning is respectively arranged with end after rotating ramp bracket
It rotates inclined-plane leveling support leg (4-1), experiment plane leveling spirit bubble (3-0) is provided in experiment plane (3), test plane
(3) it is arranged with experiment plane leveling support leg (3-1)；Experiment plane leveling support leg (3-1) is respectively placed in first base reality
It tests before the experiment plane leveling support leg rear slide (1-2) on cabinet (1) and experiment plane leveling support leg on slideway (1-1), turns
Dynamic inclined-plane (5) bracket is arranged with rotation inclined-plane leveling support leg (4-1), and rotation inclined-plane leveling support leg (4-1) is respectively placed in
Slideway before rotation inclined-plane leveling support leg rear slide (2-2) and rotation inclined-plane leveling support leg on second base experiment cabinet (2)
On (2-1)；Experiment plane (3) be connected identical with the beginning for rotating inclined-plane (5) state finally, change inclination angle of inclined plane coarse screw bar
(9) it is moved in the space that second base experiment cabinet coarse screw bar stretches neutral gear (2-3) end.
8. mechanical fine motion according to claim 7 inclined-plane measures friction coefficient experiment instrument, it is characterised in that: real
It is identical as rotation inclined-plane leveling support leg (4-1) structure to test plane leveling support leg (3-1), tests plane leveling support leg (3-
1) by experiment plane levelling shoe pedestal (3-10), experiment plane leveling threaded rod (3-11), experiment plane leveling support leg liter
Drop sleeve (3-12), experiment plane leveling support leg oscilaltion bar (3-13) and experiment plane leveling support leg are connect with pedestal
Face (3-14) composition, rotation inclined-plane leveling support leg (4-1) is by rotation inclined-plane levelling shoe pedestal (4-10), the leveling of rotation inclined-plane
Threaded rod (4-11), rotation inclined-plane leveling support leg jacking sleeve (4-12), rotation inclined-plane leveling support leg oscilaltion bar (4-
13) it is formed with rotation inclined-plane leveling support leg with pedestal joint face (4-14).
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| CN201820066607.3U CN208922573U (en) | 2018-01-16 | 2018-01-16 | Mechanical fine motion inclined-plane measures friction coefficient experiment instrument |
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| CN107993534A (en) * | 2018-01-16 | 2018-05-04 | 浙江大学城市学院 | A kind of mechanical fine motion inclined-plane measures friction coefficient experiment instrument |
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Granted publication date: 20190531 Termination date: 20200116 |