Three Degree Of Freedom EXPERIMENT OF NEWTON ' S device Teaching instrument bracket
Technical field
The utility model belongs to Teaching instrument physics experiment teaching Instrument technology field, and in particular to a kind of Three Degree Of Freedom newton
Ring experimental provision Teaching instrument bracket.
Background technique
SGH-1 type EXPERIMENT OF NEWTON ' S device is optical experiment instrument general in a kind of Physical Experiment, experimental principle
Are as follows: the very big plano-convex lens of a radius of curvature downward with its convex surface are placed on one flat plate glass, therebetween formed from
The air film of center phase periphery progressive additive, if projecting monochromatic collimated beam, air film lower edge face and upper limb face to vertical lens
The light of reflection will meet near air film upper limb face and be interfered, and a series of light and shade phases centered on glass contact point occur
Between annulus, i.e. Newton's ring;SGH-1 type EXPERIMENT OF NEWTON ' S device observes Newton's ring with reading microscope, passes through reading microscope
Scale reading on the outer microdrum of scale and eyepiece in eyepiece field of view measures the diameter of Newton's ring.It is also wanted in measurement process
Make the ring heart of interference ring and be transferred to the visual field center of reading microscope, then by rotation eyepiece, graticle is focused, until making to regard
Field internal interference ring is clear.
But in above-mentioned adjusting, measurement and reading process, the variation of reading microscope visual field internal interference annulus and focal length,
Reading only one people of operator outside eyepiece on microdrum can see that when operation of teacher is explained, student does not see these
Details, student's operation is still had any problem after causing teacher to explain.So needs one are in SGH-1 type EXPERIMENT OF NEWTON ' S device
Installation is connected with the video camera of display, the amplification by video camera to eyepiece and microdrum respectively at eyepiece and micrometer handwheel
Shooting, and by amplified image projecting on large screen display, enable student clearly to observe teacher to SGH-1 type
The adjusting of EXPERIMENT OF NEWTON ' S device, become can vision-control EXPERIMENT OF NEWTON ' S device when eyepiece and adjust hand button reading
Teaching instrument.But currently, none suitable Teaching instrument bracket, can be fixedly mounted on SGH-1 type EXPERIMENT OF NEWTON ' S device
Above-mentioned video camera is adjusted with displacement.
Utility model content
The utility model proposes a kind of Three Degree Of Freedom Newton's ring for the problems in above-mentioned background technique of effective solution
Experimental provision Teaching instrument bracket, specific technical solution are as follows:
A kind of Three Degree Of Freedom EXPERIMENT OF NEWTON ' S device Teaching instrument bracket, including sliding positioning base, vertically oriented device and
Horizontal positioning device;
The sliding positioning base includes: that two sides are equipped with the bottom plate of the first slideway and are slidably matched with first slideway
Support frame;The bottom plate is fixed at the top of EXPERIMENT OF NEWTON ' S device, and used for positioning is equipped on support frame as described above
One positioning screw;
The vertically oriented device includes: vertically oriented bracket and locating piece;The vertically oriented bracket is fixedly mounted on
On support frame as described above, the locating piece is fitted on vertically oriented bracket;The vertically oriented bracket two sides are symmetrically arranged with
Rack guide rail is equipped with graduated scale by the rack guide rail, is equipped in the locating piece and matches with the rack-track
Gear and the connecting shaft for being connected to the gear, the one end of the connecting shaft extends locating piece and the part to extend out is connected with tune
Button is saved, the locating piece side is equipped with the second positioning screw used for positioning;
The horizontal positioning device includes: the located lateral sliding rail being fixed on the locating piece and is mounted on the cross
The first camera fixing device and the second camera fixing device on positioning slide.
Preferably, first camera fixing device includes first positioning plate of the encapsulation on the located lateral sliding rail
With the third positioning screw being mounted on first positioning plate, first positioning plate is equipped with for installing the first video camera
Mounting groove, for the third positioning screw for positioning the first positioning plate and when fixing, third positioning screw withstands on located lateral
On track of sliding track.
Preferably, second camera fixing device includes: second positioning of the encapsulation on the located lateral sliding rail
Plate, the 4th positioning screw being mounted on second positioning plate, the connecting plate being fixedly connected with second positioning plate and peace
Mounted in the camera fixing device of one end of the connection board, when the 4th positioning screw is used to fix the second positioning plate and fix, the
Four positioning screws are withstood on located lateral track of sliding track.
The utility model is had an advantage that: 1. the utility model enable two video cameras in water by sliding positioning base
Prosposition is set back-and-forth motion and is adjusted;2. making two video camera realizations move up and down adjusting by vertically oriented device;By fixed vertically
The cooperation lifting of gear, rack gear in the device of position and the graduated scale by observation rack-track, enable two video cameras essence up and down
Determining displacement is dynamic, and the precise positioning up and down of the first video camera helps to reduce and adjust when observing eyepiece because focus error is produced
Raw image blur phenomena, while the second camera fixing device can be adjusted voluntarily and be moved up and down, it is unrestricted in vertically oriented
The limitation of device, to realize that the first video camera and the relatively independent upper and lower displacement of the second video camera are adjusted;3. by laterally fixed
Position device facilitates the first video camera and the second video camera transverse shifting to adjust, in conclusion the utility model can be realized to two
A video camera, front and back, up and down, lateral three direction three freedom degree position transposition sections.
Detailed description of the invention
Fig. 1 is that the utility model loads video camera schematic diagram;
Fig. 2 is the utility model structure diagram;
Fig. 3 is the utility model rearview;
Fig. 4 is the vertically oriented bracket partial schematic diagram of the utility model.
In figure: the first slideway 1, bottom plate 2, support frame 3, the first positioning screw 4, vertically oriented bracket 5, locating piece 6, rack gear
Guide rail 7, graduated scale 8, gear 9, connecting shaft 10, adjusting knob 11, the second positioning screw 12, located lateral sliding rail 13, first position
Plate 14, third positioning screw 15, the first video camera 16, mounting groove 17, the second positioning plate 18, the 4th positioning screw 19, connecting plate
20, camera fixing device 21, the 5th positioning screw 22 and the second video camera 23.
Specific embodiment
Specific embodiment of the present utility model is described in detail in conjunction with attached drawing and preferred embodiment
A kind of Three Degree Of Freedom EXPERIMENT OF NEWTON ' S device Teaching instrument bracket, including sliding positioning base, vertically oriented device and
Horizontal positioning device;
The sliding positioning base includes: that two sides are equipped with the bottom plate 2 of the first slideway 1 and match with first slideway 1 sliding
The support frame 3 of conjunction;The bottom plate 2 is fixed at the top of EXPERIMENT OF NEWTON ' S device, is equipped on support frame as described above 3 for fixed
First positioning screw 4 of position;
The vertically oriented device includes: vertically oriented bracket 5 and locating piece 6;The vertically oriented bracket 5 is fixedly mounted
On support frame as described above 3, fixed 17 blocks 6 are fitted on vertically oriented bracket 5;5 two sides of vertically oriented bracket
It is symmetrically arranged with rack guide rail 7, graduated scale 8 is equipped with by the rack guide rail 7, is equipped with and the rack gear in the locating piece 6
The gear 9 that track 7 matches and the connecting shaft 10 for being connected to the gear, described 10 one end of connecting shaft are extended locating piece 6 and are prolonged
The part stretched is connected with adjusting knob 11, and 6 side of locating piece is equipped with the second positioning screw 12 used for positioning;
The horizontal positioning device includes: the located lateral sliding rail 13 being fixed on the locating piece 6 and is mounted on institute
State the first camera fixing device and the second camera fixing device on located lateral sliding rail 13.
First camera fixing device includes first positioning plate 14 and peace of the encapsulation on the located lateral sliding rail
Third positioning screw 15 on first positioning plate 14, first positioning plate 14 are equipped with for installing the first camera shooting
The mounting groove 17 of machine 16, when the third positioning screw 15 is for positioning the first positioning plate 14 and fixing, third positioning screw 15
It withstands on 13 track of located lateral sliding rail, the mounting groove 17 is for being fixedly mounted the first video camera 16;
Second camera fixing device include: second positioning plate 18 of the encapsulation on the located lateral sliding rail 13,
The 4th positioning screw 19 being mounted on second positioning plate 18, the connecting plate 20 being fixedly connected with second positioning plate 18
With the camera fixing device 21 for being mounted on 20 one end of connecting plate, the 4th positioning screw 19 is for fixing the second positioning plate 18
And when fixing, the 4th positioning screw 19 is withstood on located lateral track of sliding track 13, and the camera fixing device 21 passes through the 5th
Positioning screw 22 fastens the second video camera 23.
The utility model enables two video cameras to be moved forward and backward adjusting by sliding positioning base;Pass through vertically oriented dress
Setting makes two video camera realizations move up and down adjusting;Pass through the cooperation lifting and observation of gear, rack gear in vertically oriented device
Graduated scale by track enables two video cameras to be accurately positioned movement up and down, and the precise positioning up and down of the first video camera has
Because of image blur phenomena caused by focus error when helping reduce and adjust observation eyepiece, while the second camera fixing device
It can voluntarily adjust and move up and down, the unrestricted limitation in vertically oriented device, to realize the first video camera and the second camera shooting
The relatively independent upper and lower displacement of machine is adjusted;By horizontal positioning device, facilitate the first video camera and the second video camera transverse shifting
It adjusts, in conclusion the utility model can be realized to two video cameras, front and backs, up and down, lateral three direction three freedom degree positions
Transposition section.
When being adjusted by sliding positioning base, need to first come loose the first positioning screw, and support frame is pushed to be moved forward and backward, when
The first positioning screw is fixed after finding suitable position;When adjusting vertically oriented device, the second positioning screw is first unclamped, rotation is adjusted
Button is saved, cooperates power-assisted to promote two video cameras by gear, and accurately harmonize by the graduated scale on side, it is right in an experiment to realize
The accurate fine tuning of first video camera manually adjusts the second video camera when having adjusted the first video camera again, enables the second video camera
Clearly photographed the adjusting for adjusting hand button, it should be pointed out that eyepiece is the sequence successively adjusted with adjusting hand button;It is laterally fixed
When position device is adjusted, it need to only guarantee that two video cameras are directed at the position for respectively needing to shoot, and pass through third positioning screw
It is fixed respectively with the 4th positioning screw, it should be pointed out that since SGH-1 type EXPERIMENT OF NEWTON ' S device needs sodium amber light
Irradiation, so interfering with each other in order to not influence two video cameras because of light, the camera site of second video camera is answered low
In the first video camera.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model, and the above is only the preferred embodiment of the utility model.