CN217562158U - Rotatory liquid is thrown thing liquid level focus observation device - Google Patents
Rotatory liquid is thrown thing liquid level focus observation device Download PDFInfo
- Publication number
- CN217562158U CN217562158U CN202221679440.0U CN202221679440U CN217562158U CN 217562158 U CN217562158 U CN 217562158U CN 202221679440 U CN202221679440 U CN 202221679440U CN 217562158 U CN217562158 U CN 217562158U
- Authority
- CN
- China
- Prior art keywords
- rotating
- base
- frame
- leveling
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 description 10
- 230000005499 meniscus Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The application provides a device for observing the focal length of a parabolic liquid surface of rotating liquid, which comprises a first base, a second base and a rotating device, wherein the first base is provided with a three-way adjusting bracket; the end part of the three-way adjusting bracket is provided with a first leveling frame, the first leveling frame is provided with a first laser source, a first thin light-transmitting plate is arranged under the first laser source, the second base is provided with a second adjusting frame and a third adjusting frame which can rotate along a plane parallel to the base and can be adjusted at least along at least two directions in X, Y and Z three directions, the end part of the second adjusting frame is provided with a second leveling frame, the bottom part of the second leveling frame is provided with a thin observation screen, the end part of the third adjusting frame is provided with a third leveling frame, the third leveling frame is provided with a second laser source, and the second thin light-transmitting plate is arranged under the second laser source; the rotating shaft of the rotating device is coaxially connected with the object carrying platform, and the liquid container is arranged on the object carrying platform. The device is simple in structure, convenient to operate, easy to observe and accurate in measurement.
Description
Technical Field
The application relates to the technical field of physical experiment devices, in particular to a device for observing the focal length of a parabolic liquid surface of rotating liquid.
Background
The spinning liquid property study experiment is a typical experiment of a physical experiment class. Under the stable state, by analyzing the stress condition of liquid surface particles, the stable rotating liquid surface is a parabolic liquid surface which takes a rotating shaft as a symmetry axis, and the stable rotating liquid surface is just the result of the combined action of gravity, centrifugal force and the mutual extrusion force among liquid particle molecules. Different rotating speeds generate different centrifugal forces, and the shapes of the obtained parabolic liquid surfaces are different. Therefore, the geometrical optical characteristics of the parabolic liquid surface of the rotating liquid can be used for measuring the local gravitational acceleration, and quantitatively researching the relation between the focal length and the rotating speed of the parabolic liquid surface, so that the method has very important practical significance for promoting students to deeply understand the geometrical optical characteristics of the concave mirror.
At present, the experimental device for researching the geometrical and optical characteristics of the rotating liquid in the market only uses one incident ray as a research object, the reliability of a measurement result is low, and a measurement error exists.
SUMMERY OF THE UTILITY MODEL
The application provides a rotatory liquid parabolic liquid level focus observation device, through survey be on a parallel with the pivot and can adjust two bundles of incident parallel light of incident position wantonly obtain the measuring value of rotatory parabolic liquid level focus through the nodical and the distance between the rotatory parabolic liquid level minimum of nodical after the reflection of rotatory parabolic liquid level, compare measuring value and theoretical calculated value and draw the experiment conclusion, simple structure, the simple operation easily observes, measures accurately.
The application provides a device for observing the focal length of a parabolic liquid surface of rotating liquid, which comprises a first base, wherein a three-way adjusting support is arranged on the first base, can move and adjust along X, Y and Z three directions, and can rotate in parallel to the plane of the base; a first leveling frame is arranged at the end part of the three-way adjusting support, a first laser source is arranged on the first leveling frame, and a first thin light-transmitting plate for performing auto-collimation adjustment on parallel laser beams is arranged right below the first laser source; the device comprises a base and is characterized by further comprising a second base, wherein a second adjusting frame and a third adjusting frame are mounted on the second base, the second adjusting frame and the third adjusting frame both rotate along a plane parallel to the base and are adjustable along at least two directions in X, Y and Z directions, a second leveling frame is arranged at the end part of the second adjusting frame, a thin observation screen is mounted at the bottom of the second leveling frame, a third leveling frame is arranged at the end part of the third adjusting frame, a second laser source is arranged on the third leveling frame, and a second thin light-transmitting plate is arranged under the second laser source; a rotating device is arranged between the first base and the second base, a rotating shaft of the rotating device is coaxially connected with a carrying platform, and a liquid container is arranged on the carrying platform.
In some embodiments, the three-way adjusting bracket includes a first rotating lifting rod, a first sleeving part is arranged at the top of the first rotating lifting rod, a first sliding rod is movably sleeved in the first sleeving part, a first transmission component which can allow the first sliding rod to slide along an inner cavity of the first sleeving part is arranged on the first sleeving part, a second sleeving part is arranged at the end of the first sliding rod, a second sliding rod which can slide along the inner cavity of the second sleeving part is movably sleeved in the second sleeving part, a second transmission component is arranged in the second sleeving part, and the end of the second sliding rod is fixedly connected with the first leveling frame.
In some embodiments, the second adjusting bracket includes a second rotating lifting rod, a third sleeving part is arranged at the top of the second rotating lifting rod, a third sliding rod is movably sleeved in the third sleeving part, a third transmission assembly is arranged on the third sleeving part, and the end of the third sliding rod is fixedly connected to the second leveling bracket.
In some embodiments, the third adjusting frame includes a third rotating lifting rod, a fourth sleeving part is arranged at the top of the third rotating lifting rod, a fourth sliding rod is movably sleeved in the fourth sleeving part, a fourth transmission assembly is arranged on the fourth sleeving part, and the end of the fourth sliding rod is fixedly connected with the third leveling frame.
In some embodiments, the first transmission assembly, the second transmission assembly, and the third transmission assembly each include a knob mounted on the casing and a rack and pinion disposed inside the casing and connected to the knob, the rack and pinion connecting the knob and the slide bar.
In some embodiments, the bottom of the first base and the bottom of the second base are respectively provided with a plurality of leveling screws.
In some embodiments, the leveling screws are at least three and are distributed in an angular shape on the base.
In some embodiments, the device further comprises a vertical column installed on the second base and a horizontal scale installed on the vertical column in a sliding mode, and scale marks are arranged on the vertical column.
The rotating liquid parabolic surface focal length observation device provided by the application rotates at a certain angular speed through the rotating device, drives the liquid container bearing liquid to rotate, and observes whether two incident laser beams converge on the same point of a straight line through which a rotating shaft passes on the thin observation screen; and keeping the laser sources unchanged, under the condition that the incident laser beams are kept to be always parallel to the rotating shaft, adjusting the three-way adjusting bracket and the third adjusting bracket in a matching way to change the incident position of the second laser source, observing whether the two incident laser beams always converge on the same point on the thin observation screen, and measuring the distance between the lowest point of the rotary meniscus and the convergence point when the two incident laser beams always converge on the same point on the thin observation screen. And (3) repeating the experiment by changing the rotation angular velocity of the rotating device, and finally verifying the theoretical derivation that the stable rotating concave liquid surface is the rotating parabolic liquid surface. The application provides an observation device, its simple structure, the simple operation easily observes, and measures accurately, has greatly improved the persuasion of experimental result, helps the experimenter to understand and deep master rotatory parabolic liquid level geometric optical characteristic and concave mirror geometric optical characteristic.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a device for observing the focal length of a parabolic liquid surface of a rotating liquid provided by the present application.
The device comprises a first base, a second base, a rotating device, a 4-carrying platform, a 5-liquid container, a 6-first rotating lifting rod, a 7-first nesting part, a 8-first sliding rod, a 9-second nesting part, a 10-second sliding rod, a 11-first leveling frame, a 12-second rotating lifting rod, a 13-third nesting part, a 14-third sliding rod, a 15-second leveling frame, a 16-third rotating lifting rod, a 17-fourth nesting part, a 18-fourth sliding rod, a 19-third leveling frame, a 20-knob, a 21-leveling screw, a 22-upright column, a 23-horizontal scale, a 24-first laser source, a 25-second laser source, a 26-first thin light-transmitting plate, a 27-thin observation screen and a 28-second thin light-transmitting plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic view of a device for observing the focal length of a rotating liquid parabolic surface according to the present application.
The application provides a rotatory liquid parabola liquid level focus observation device, including first base 1, second base 2 and rotary device 3, install the three-dimensional on the first base 1 and adjust the support, the three-dimensional support of adjusting can be followed X, Y, Z three-dimensional removal and is adjusted to can be on a parallel with the base plane rotation of first base 1. The end of the three-way adjusting support is provided with a first leveling frame 11, the first leveling frame 11 is provided with a first laser source 24, a first thin light-transmitting plate 26 is arranged right below the first laser source 24, and the first thin light-transmitting plate 26 is used for performing auto-collimation adjustment on parallel laser beams.
Install second alignment jig and third alignment jig on the second base 2, second alignment jig and third alignment jig are all along being on a parallel with the base platform rotation and along X, Y, the at least two directions in the Z three-dimensional direction is adjustable, the tip of second alignment jig is equipped with second leveling frame 15, the thin observation screen 27 of bottom installation of second leveling frame 15, the tip of third alignment jig is equipped with third leveling frame 19, be equipped with second laser source 25 on the third leveling frame 19, be equipped with the thin light-passing board of second 28 under the second laser source 25. Be equipped with rotary device 3 between first base 1 and the second base 2, rotary device 3's pivot coaxial coupling cargo platform 4, installation liquid container 5 on cargo platform 4, the liquid container 5 middle splendid attire is treated the liquid of surveing.
Specifically, the first laser source 24 is fixed to the first leveling frame 11, the first laser source 24 can emit a bright parallel laser beam, and the incident direction of the laser beam can be adjusted by adjusting the first leveling frame 11. The planar thin light-transmitting plate is disposed just below the exit port of the first laser source 24 and is used for auto-collimation adjustment of the parallel laser beams. The thin viewing screen 27 is connected to the bottom of the second leveling frame 15 by a connecting rod, and the orientation of the thin viewing screen 27 can be adjusted by adjusting the second leveling frame 15.
The second laser source 25 is fixed on the third leveling frame 19, the second laser source 25 can emit a bright parallel laser beam, and the incidence direction of the laser beam can be adjusted by adjusting the third leveling frame 19. The second thin, transparent plate 28 is provided directly below the exit port of the second laser source 25 for auto-collimation adjustment of the collimated laser beam. The rotating shaft of the rotating device 3 is collinear with the central shaft of the cylindrical object carrying platform 4, the rotating shaft and the central shaft are connected through screws, the rotating speed of the rotating device 3 can be set manually, and the rotating speed is displayed in real time through a display screen. The liquid container 5 is a cylindrical cylinder with an open top, the liquid container 5 is placed on the object carrying platform 4, and the liquid container 5 filled with liquid to be measured is driven to synchronously rotate along with the object carrying platform during the rotation of the rotating device 3.
The stress analysis shows that the stable rotating concave liquid surface is a rotating parabolic liquid surface, so that the light rays incident in parallel with the rotating shaft converge at the focus of the rotating parabolic liquid surface after being reflected by the concave liquid surface, and the theoretical value of the focal distance is g/(2 omega) 2 ) Wherein: g is the local gravitational acceleration and ω is the rotational angular velocity.
Before the experiment, the three-way adjusting bracket, the second adjusting bracket and the third adjusting bracket are adjusted, and each adjusting bracket is calibrated and leveled, so that the parallel bright laser beams emitted by the first laser source 24 and the second laser source 25 are all irradiated onto the liquid level. And adjusting the first leveling frame 11, the second leveling frame 15 and the third leveling frame 19 to make the light spot formed on the thin light-transmitting plate right below the light spot formed by the laser beam emitted by the first laser source 24 and the light spot formed on the thin light-transmitting plate after being reflected by the liquid level strictly coincide, so that the laser beam emitted by the first laser source 24 is parallel to the rotating shaft at the moment. The third leveling leg 19 is adjusted so that the laser beam emitted by the second laser source 25 is parallel to the rotation axis. The thin viewing screen 27 is vertically positioned by adjusting the third adjustment bracket, and the rotation shaft passes through the symmetry center. The two viewing faces of the thin viewing screen 27 are directed towards the side where the first laser source 24 is located and the side where the second laser source 25 is located, respectively, and are suitably adjusted by means of an adjustment bracket.
In the experiment, the rotating device 3 rotates at a certain angular speed to drive the liquid container 5 bearing liquid to rotate, and whether two incident laser beams converge on the same point of a straight line passing through a rotating shaft on the thin observation screen 27 is observed; and keeping the laser source unchanged, under the condition of keeping the incident laser beam parallel to the rotating shaft all the time, adjusting the three-way adjusting bracket and the third adjusting bracket in a matching manner to change the incident position of the second laser source 25, observing whether the two incident laser beams always converge on the same point on the thin observation screen 27, and measuring the distance between the lowest point of the rotary concave liquid surface and the convergence point when the two incident laser beams always converge on the same point on the thin observation screen 27. By changing the rotation angular velocity of the rotating device 3, the above experiment is repeated, and finally the theoretical derivation that the rotationally stable meniscus is a rotational parabolic meniscus is verified.
The method utilizes the reflection principle of geometric optics, theoretically deduces the quantitative relation between the focal length and the rotating speed of the parabolic liquid surface of the rotating liquid by a relatively visual method, optimizes the measuring method of the focal length of the parabolic liquid surface of the rotating liquid on the basis of the existing comprehensive experimental instrument of the rotating liquid in a laboratory, and performs experimental measurement on the focal length of the parabolic liquid surface of the liquid under different rotating speeds.
According to a specific embodiment of this application, three-way regulation support includes first rotatory lifter 6, and the top of first rotatory lifter 6 is equipped with first suit spare 7, and the first slide bar 8 of activity suit in the first suit spare 7 is provided with first transmission assembly on the first suit spare 7, and this first transmission assembly can supply first slide bar 8 to slide along the inner chamber of first suit spare 7, adjusts the position of first slide bar 8 from this. The end part of the first sliding rod 8 is provided with a second sleeving part 9, a second sliding rod 10 is movably sleeved in the second sleeving part 9, a second transmission assembly is arranged in the second sleeving part 9, the second sliding rod 10 can slide along the inner cavity of the second sleeving part 9 by adjusting the second transmission assembly, and the end part of the second sliding rod 10 is fixedly connected with a first leveling frame 11.
In this embodiment, the first sliding rod 8 can be driven to adjust the position by adjusting the first transmission assembly. The second sliding rod 10 can be driven to adjust the position by adjusting the second transmission assembly.
The first rotary lifting rod 6 comprises a cylindrical upright column perpendicular to the upper surface of the first base 1 and a circular sleeve sleeved on the upright column, the circular sleeve can slide up and down along the axial direction of the upright column in one dimension, can rotate around the upright column 22, and can be locked by a locking screw on the circular sleeve. The top of the circular sleeve is connected with a first sliding rod 8 through a first sleeving part 7, and the first sliding rod 8 is perpendicular to the upright column 22. The lower surface of the first sliding rod 8 is provided with an axial concave groove, a first transmission assembly is arranged in the groove, and the first sliding rod 8 can do one-dimensional reciprocating motion along the axial direction of the first sliding rod through the first transmission assembly. The end of the first sliding rod 8 is connected to the second sliding rod 10 by the second sleeve 9, and the second sliding rod 10 is perpendicular to the first sliding rod 8 and the upright 22.
The second adjusting frame comprises a second rotary lifting rod 12, a third sleeving part 13 is arranged at the top of the second rotary lifting rod 12, a third sliding rod 14 is movably sleeved in the third sleeving part 13, a third transmission assembly is arranged on the third sleeving part 13, and the end part of the third sliding rod 14 is fixedly connected with a second leveling frame 15. The second rotary lifting rod 12 is vertically arranged on the second base 2, the structure of the second rotary lifting rod 12 is the same as that of the first rotary lifting rod 6, the second rotary lifting rod 12 can move up and down and rotate around a central shaft, and the position of the third sliding rod 14 can be adjusted by adjusting the third transmission component.
Similarly, the third adjusting frame has the same structure as the second adjusting frame and comprises a third rotary lifting rod 16, the third rotary lifting rod 16 is perpendicular to the second base 2, a fourth sleeving part 17 is arranged at the top of the third rotary lifting rod 16, a fourth sliding rod 18 is movably sleeved in the fourth sleeving part 17, a fourth transmission assembly is arranged on the fourth sleeving part 17, and the end part of the fourth sliding rod 18 is fixedly connected with a third leveling frame 19. The adjustment of the position of the fourth slide bar 18 can be driven by adjusting the fourth transmission assembly.
The first transmission assembly, the second transmission assembly and the third transmission assembly respectively comprise a knob 20, a gear and a rack, the knob 20 is installed on the sleeving piece, an axial concave groove is formed in the lower surface of the sliding rod, the rack is arranged in the groove, and the rack is closely meshed with the gear in the sleeving piece. The corresponding sliding rod can do one-dimensional reciprocating motion along the axial direction of the sliding rod by rotating the gear.
The first leveling frame, the second leveling frame and the third leveling frame are composed of an upper frame, a lower frame, a plurality of springs and a plurality of adjusting screws, the upper frame and the lower frame are connected into a whole through the springs, the springs are sleeved outside the adjusting screws, the upper frame and the lower frame are propped open by the adjusting screws, and leveling is performed through screwing the screws.
According to a specific embodiment of the present application, the leveling screws 21 are respectively disposed at the bottom of the first base 1, the bottom of the second base 2, and the bottom of the rotating device 3, and the number of the leveling screws 21 is at least three, and the leveling screws are distributed on each base in an angular shape. Before the experiment, the leveling screws 21 at the bottoms of the first base 1 and the second base 2 are respectively adjusted by means of a level gauge, so that the object carrying platform 4 of the rotating device 3 and the upper surfaces of the bases of the first base 1 and the second base 2 are respectively in a horizontal state, and then subsequent monitoring is carried out. The second base 2 is further provided with a vertical column 22, a horizontal scale 23 is slidably mounted on the vertical column 22, the vertical column 22 is of a cylindrical structure, millimeter scales are marked on the vertical column 22 along the axial direction, and the horizontal scale 23 used for measuring the height of an observation point is mounted on the vertical column. Specifically, two parallel straight lines are respectively engraved on the front side and the rear side of the horizontal scale 23, and a plane defined by the two parallel straight lines is perpendicular to the upright column 22, so that the height of the observed point can be read through the millimeter scale on the upright column 22 by adjusting the horizontal scale 23 to enable the observation point to be located on the plane defined by the two straight lines.
When the two incident laser beams converge on the same point on the thin viewing screen 27 all the time, the distance between the lowest point of the rotating meniscus and the convergence point is measured by the horizontal scale 23, and the rotation speed corresponding to the rotating meniscus is recorded. The rotational angular velocity of the rotating system is varied and the measurement is repeated.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The device for observing the focal length of the parabolic liquid surface of the rotating liquid provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (8)
1. The device for observing the focal length of the parabolic liquid surface of the rotating liquid is characterized by comprising a first base (1), wherein a three-way adjusting bracket is arranged on the first base (1), can be movably adjusted along X, Y and Z directions and can rotate in parallel to the plane of the base; a first leveling frame (11) is arranged at the end part of the three-way adjusting support, a first laser source (24) is arranged on the first leveling frame (11), and a first thin light-transmitting plate (26) used for performing auto-collimation adjustment on parallel laser beams is arranged right below the first laser source (24); the device is characterized by further comprising a second base (2), wherein a second adjusting frame and a third adjusting frame are mounted on the second base (2), the second adjusting frame and the third adjusting frame rotate along a plane parallel to the base and are adjustable along at least two directions in X, Y and Z three directions, a second leveling frame (15) is arranged at the end of the second adjusting frame, a thin observation screen (27) is mounted at the bottom of the second leveling frame (15), a third leveling frame (19) is arranged at the end of the third adjusting frame, a second laser source (25) is arranged on the third leveling frame (19), and a second thin light-transmitting plate (28) is arranged under the second laser source (25); a rotating device (3) is arranged between the first base (1) and the second base (2), a rotating shaft of the rotating device (3) is coaxially connected with a carrying platform (4), and a liquid container (5) is arranged on the carrying platform (4).
2. The device for observing the parabolic liquid surface focal length of a rotating liquid according to claim 1, wherein the three-way adjusting bracket comprises a first rotating lifting rod (6), a first fitting member (7) is disposed at a top of the first rotating lifting rod (6), a first sliding rod (8) is movably fitted in the first fitting member (7), a first transmission component for allowing the first sliding rod (8) to slide along an inner cavity of the first fitting member (7) is disposed on the first fitting member (7), a second fitting member (9) is disposed at an end of the first sliding rod (8), a second sliding rod (10) capable of sliding along an inner cavity of the second fitting member (9) is movably fitted in the second fitting member (9), a second transmission component is disposed in the second fitting member (9), and an end of the second sliding rod (10) is fixedly connected to the first leveling frame (11).
3. The device for observing the focal length of the parabolic liquid surface of the rotating liquid according to claim 2, wherein the second adjusting frame comprises a second rotating lifting rod (12), a third sleeving part (13) is arranged at the top of the second rotating lifting rod (12), a third sliding rod (14) is movably sleeved in the third sleeving part (13), a third transmission assembly is arranged on the third sleeving part (13), and the end of the third sliding rod (14) is fixedly connected with the second leveling frame (15).
4. The device for observing the focal length of a parabolic liquid surface of a rotating liquid according to claim 3, wherein the third adjusting frame comprises a third rotating lifting rod (16), a fourth sleeving part (17) is arranged at the top of the third rotating lifting rod (16), a fourth sliding rod (18) is movably sleeved in the fourth sleeving part (17), a fourth transmission assembly is arranged on the fourth sleeving part (17), and the end of the fourth sliding rod (18) is fixedly connected with the third leveling frame (19).
5. The device for observing the focal length of a rotating liquid parabolic surface according to claim 3, wherein the first transmission assembly, the second transmission assembly and the third transmission assembly each comprise a knob (20) mounted on a casing and a rack and pinion disposed inside the casing and connected to the knob (20).
6. The device for observing the focal length of a parabolic liquid surface of a rotating liquid according to any one of claims 1 to 5, wherein a plurality of leveling screws (21) are respectively arranged at the bottom of the first base (1) and the bottom of the second base (2).
7. The device for observing the focal length of a parabolic liquid surface by utilizing rotating liquid as claimed in claim 6, wherein the number of the leveling screws (21) is at least three, and the leveling screws are distributed on the base in an angular shape.
8. The device for observing the focal length of the parabolic liquid surface of rotary liquid according to claim 7, further comprising a vertical column (22) installed on the second base (2) and a horizontal scale (23) slidably installed on the vertical column (22), wherein the vertical column (22) is provided with scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221679440.0U CN217562158U (en) | 2022-07-01 | 2022-07-01 | Rotatory liquid is thrown thing liquid level focus observation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221679440.0U CN217562158U (en) | 2022-07-01 | 2022-07-01 | Rotatory liquid is thrown thing liquid level focus observation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217562158U true CN217562158U (en) | 2022-10-11 |
Family
ID=83503075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221679440.0U Expired - Fee Related CN217562158U (en) | 2022-07-01 | 2022-07-01 | Rotatory liquid is thrown thing liquid level focus observation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217562158U (en) |
-
2022
- 2022-07-01 CN CN202221679440.0U patent/CN217562158U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209406712U (en) | A kind of five axis dispenser systems | |
| CN108489516B (en) | Integrated calibration device and method for image type laser graticule | |
| CN110823836A (en) | Multi-angle test system for surface feature spectrum | |
| CN207472217U (en) | A kind of part parallelism detector | |
| CN106643548A (en) | Aspheric optical element surface shape detection device | |
| CN217562158U (en) | Rotatory liquid is thrown thing liquid level focus observation device | |
| CN113984089A (en) | Laser swinger calibration device and method based on spherical triangle geometric theory | |
| CN210488104U (en) | Compact reflector adjusting device for plumb aligner calibrating device | |
| CN211293237U (en) | Laser scanning measuring instrument | |
| CN101592519B (en) | Synchronous reflection distributing photometer | |
| CN108871299B (en) | Plumb benchmark speculum device | |
| CN216748075U (en) | Optical radar testing mechanism | |
| CN207798000U (en) | A kind of portable module combined multi-functional laser 3 d scanner | |
| CN215725983U (en) | Theodolite horizontal direction one-measuring-back precision testing system based on collimator | |
| CN216694981U (en) | Measuring device for construction | |
| CN212513588U (en) | Detection apparatus for variable spring gallows bearing capacity | |
| CN210014761U (en) | Multi-angle test platform for surface feature spectrum | |
| CN202533067U (en) | Angular instrument | |
| CN112082577B (en) | Level telescope focusing operation error calibrating device | |
| CN211374484U (en) | Horizontal adjusting device of resolution meter | |
| CN211402918U (en) | Microscope for detecting reticle upper cross line | |
| CN204228265U (en) | A kind of Nearfield distribution photometer | |
| CN112683448A (en) | High-temperature smoke exhaust fan impeller eccentricity correction device | |
| CN111521997A (en) | Hand-held type laser range finder verification system | |
| CN216285370U (en) | Be used for supplementary metrological calibrating installation of non-contact tachometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221011 |