CN215932983U

CN215932983U - Optical experiment workbench

Info

Publication number: CN215932983U
Application number: CN202122524902.3U
Authority: CN
Inventors: 卢婧; 王丹
Original assignee: Chengdu Technological University CDTU
Current assignee: Chengdu Technological University CDTU
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-03-01
Anticipated expiration: 2031-10-20

Abstract

The utility model belongs to the technical field of experiment demonstration devices, and particularly relates to an optical experiment workbench which comprises a base, wherein four corners of the bottom of the base are rotatably provided with universal wheels, the top of the base is fixedly provided with an accommodating box, the top of the accommodating box is provided with an opening, two rotating grooves are formed between the accommodating box and the base, screw rod guide sleeves are rotatably arranged in the two rotating grooves, first umbrella teeth are fixedly sleeved on the two screw rod guide sleeves, screw rods are sleeved on the top ends of the two screw rods, the top ends of the two screw rods are fixedly provided with a same experiment box, one side of the experiment box is rotatably provided with two box doors through hinges, the two box doors are provided with ventilation holes, and the inner walls of the two sides of the experiment box are fixedly provided with a same slide rod. The utility model has simple structure, is convenient for multiple times of adjustment in optical experiments and is convenient for storage and carrying.

Description

Optical experiment workbench

Technical Field

The utility model relates to the technical field of experiment demonstration devices, in particular to an optical experiment workbench.

Background

The pinhole imaging experiment is a basic optical experiment of middle school physics, and students usually do not have self life experience for support when learning the phenomenon, so that the experimental demonstration of pinhole imaging in a classroom is very necessary, but most of the existing optical experiment demonstration devices have simple structures and single functions, are inconvenient to operate when carrying out the pinhole imaging experiment, and have the following specific problems;

1. the traditional experimental method is that a plate with small holes is used for shielding between a light screen and a candle, the light screen can form a reverse image of the candle, and if experiments are required according to different hole diameters, a plurality of shielding plates are required, so that the experiment is very inconvenient;

2. most of the existing devices are fixed on a laboratory bench or scattered on the laboratory bench, are inconvenient to store and carry, are exposed in the air for experiment, and are very inconvenient because the candle can be extinguished when blown by wind;

3. the device is not convenient for accurately adjusting the distance between the candle and the light screen, and students cannot visually know the influence of the distance between the candle and the light screen on images.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an optical experiment workbench.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an optical experiment workbench comprises a base, universal wheels are rotatably mounted at four corners of the bottom of the base, a containing box is fixedly mounted at the top of the base, the top of the containing box is provided with an opening, two rotating grooves are formed between the containing box and the base, screw guide sleeves are rotatably mounted in the two rotating grooves, first umbrella teeth are fixedly sleeved on the two screw guide sleeves, screw rods are screwed on the top ends of the first umbrella teeth and the second umbrella teeth, the same experiment box is fixedly mounted at the top ends of the two screw rods, two box doors are rotatably mounted at one side of the experiment box through hinges, ventilating holes are formed in the two box doors, the same slide bar is fixedly mounted on the inner walls at two sides of the experiment box, two slide sleeves are slidably sleeved on the slide bar, an optical screen is fixedly mounted at the top of the slide bars, a candle and a shielding plate are fixedly mounted at the top of the two slide sleeves respectively, the shielding plate is positioned between the optical screen and the candle, and an imaging hole is formed in the shielding plate, the top in formation of image hole has seted up the movable groove, movable mounting has the baffle with formation of image hole looks adaptation in the movable groove, rotate on the both sides inner wall of containing box and install same pivot, two second bevel gears have been cup jointed to the fixed in pivot, and two second bevel gears are respectively with the first bevel gear intermeshing that corresponds.

Preferably, a graduated scale is fixedly arranged on the inner wall of the top of the experiment box.

Preferably, any end of the rotating shaft extends out of the containing box and is fixedly sleeved with a turntable.

Preferably, the two box doors are made of transparent glass materials, and handles are fixedly mounted on the outer sides of the two box doors.

Preferably, a plurality of limiting grooves are formed in the bottoms of the sliding rods at equal intervals, limiting screws matched with the limiting grooves are installed at the bottoms of the two sliding sleeves in a threaded mode, and first knobs are fixedly sleeved at the bottom ends of the two limiting screws.

Preferably, the slide bar is sleeved with two springs, one ends of the two springs are fixed on the corresponding sliding sleeves, and the other ends of the two springs are fixed on the slide bar.

Preferably, an adjusting screw is installed on the top of the baffle plate in a threaded manner, the bottom end of the adjusting screw is rotatably connected with the top of the baffle plate, and a second knob is fixedly sleeved at the top end of the adjusting screw.

In the utility model, the optical experiment workbench firstly moves the device to the position needing experiment, then the brake is fixed by rotating the brake block, then the rotating disc is rotated to drive the two second bevel gears to rotate, the two first bevel gears and the two lead screw guide sleeves can be driven to rotate, the two lead screws can be driven to move upwards, the experiment box can be driven to move upwards, when the experiment box moves out of the containing box, the two box doors are opened by pulling the handles, then the candle is lighted and pulled, the distance between the two sliding sleeves is adjusted by matching with the graduated scale, then the two first knobs are rotated to ensure that the two limit screw rods are respectively clamped into the corresponding limit grooves at the bottoms of the sliding rods, can fix the position of two sliding sleeves, can adjust the position of candle and shielding plate, through adjusting many times, can carry out the contrast experiment. In order to achieve a better experiment effect, the size of the imaging hole can be adjusted, the small-hole imaging effect can be observed for multiple times conveniently, the second knob is rotated to drive the adjusting screw to rotate downwards, the baffle can be driven to move downwards, and the actual size of the imaging hole can be adjusted. After the adjustment is finished, the candle is prevented from being blown out by external wind by closing the two box doors. The utility model has simple structure, is convenient for multiple times of adjustment in optical experiments and is convenient for storage and carrying.

Drawings

FIG. 1 is a schematic structural diagram of an optical bench according to the present invention;

FIG. 2 is a schematic structural diagram of part A of an optical bench according to the present invention;

FIG. 3 is a diagram of the internal structure of an optical experiment bench related to the experimental box according to the present invention;

fig. 4 is a side view of an optical bench according to the present invention.

In the figure: the device comprises a base 1, a turntable 2, a containing box 3, a handle 4, an experimental box 5, a ventilation hole 6, a box door 7, a second bevel gear 8, a screw rod 9, a first bevel gear 10, a screw rod guide sleeve 11, a graduated scale 12, a light screen 13, a sliding rod 14, a spring 15, a sliding sleeve 16, a shielding plate 17, a first knob 18, a limit screw 19, a candle 20, an imaging hole 21, a baffle 22, a movable groove 23, an adjusting screw 24 and a second knob 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-4, an optical experiment workbench comprises a base 1, universal wheels are rotatably mounted at four corners of the bottom of the base 1, a containing box 3 is fixedly mounted at the top, the top of the containing box 3 is provided with an opening, two rotating grooves are arranged between the containing box 3 and the base 1, screw guide sleeves 11 are rotatably mounted in the two rotating grooves, first umbrella teeth 10 are fixedly sleeved on the two screw guide sleeves 11, screw rods 9 are screwed on the top ends of the first umbrella teeth and the second umbrella teeth, the same experiment box 5 is fixedly mounted at the top ends of the two screw rods 9, two box doors 7 are rotatably mounted at one side of the experiment box 5 through hinges, ventilating holes 6 are formed in the two box doors 7, the same slide bar 14 is fixedly mounted on inner walls at two sides of the experiment box 5, two slide sleeves 16 are slidably sleeved on the slide bar 14, a light screen 13 is fixedly mounted at the top, a candle 20 and a shielding plate 17 are fixedly mounted at the tops of the two slide sleeves 16 respectively, the shielding plate 17 is located between the light screen 13 and the candle 20 and the imaging hole 21 is formed in the shielding plate 17, the movable groove 23 is formed in the top of the imaging hole 21, the baffle plate 22 matched with the imaging hole 21 is movably mounted in the movable groove 23, the inner walls of the two sides of the containing box 3 are rotatably mounted with the same rotating shaft, the rotating shaft is fixedly connected with two second umbrella teeth 8, and the two second umbrella teeth 8 are respectively meshed with the corresponding first umbrella teeth 10.

Example two

In the utility model, the graduated scale 12 is fixedly arranged on the inner wall of the top of the experimental box 5, and the graduated scale 12 is convenient for observation.

In the utility model, any end of the rotating shaft extends out of the containing box 3 and is fixedly sleeved with the turntable 2, and the rotating shaft is convenient to rotate through the turntable 2.

In the utility model, the two box doors 7 are made of transparent glass materials, the handles 4 are fixedly arranged on the outer sides of the two box doors, the box doors 7 can be conveniently opened through the handles 4, and the observation cannot be influenced through the glass materials.

In the utility model, a plurality of limiting grooves are formed in the bottom of the sliding rod 14 at equal intervals, limiting screw rods 19 matched with the limiting grooves are installed at the bottoms of the two sliding sleeves 16 in a threaded manner, first knobs 18 are fixedly sleeved at the bottom ends of the two limiting screw rods 19, and the two limiting screw rods 19 are respectively clamped into the corresponding limiting grooves in the bottom of the sliding rod 14 by rotating the two first knobs 18, so that the positions of the two sliding sleeves 16 can be fixed, and the positions of the candle 20 and the shielding plate 17 can be adjusted.

In the utility model, two springs 15 are sleeved on the sliding rod 14, one ends of the two springs 15 are fixed on the corresponding sliding sleeves 16, the other ends of the two springs 15 are fixed on the sliding rod 14, and the sliding sleeves 16 can be conveniently reset through the springs 15.

In the utility model, the top thread of the shielding plate 17 is provided with an adjusting screw 24, the bottom end of the adjusting screw 24 is rotatably connected with the top of the baffle plate 22, the top end of the adjusting screw 24 is fixedly sleeved with a second knob 25, the second knob 25 is rotated to drive the adjusting screw 24 to rotate downwards, so that the baffle plate 22 can be driven to move downwards, and the actual size of the imaging hole 21 can be adjusted.

The working principle is as follows: in the utility model, the device is firstly moved to the position to be tested, then the brake is fixed by rotating the brake block, then the rotating disc 2 is rotated to drive the two second bevel gears 8 to rotate, the two first bevel gears 10 and the two lead screw guide sleeves 11 can be driven to rotate, the two lead screws 9 can be driven to move upwards, the experiment box 5 can be driven to move upwards, when the experiment box 5 moves out of the containing box 3, the two box doors 7 are opened by pulling the handle 4, then the candle 20 is lighted and pulled, the distance between the two sliding sleeves 16 is adjusted by matching with the graduated scale 12, then the two first knobs 18 are rotated to enable the two limit screws 19 to be respectively clamped into the corresponding limit grooves at the bottom of the slide bar 14, can fix the position of two sliding sleeves 16, can be to the position of candle 20 and shielding plate 17, through many times regulation, can carry out the contrast experiment. In order to achieve a better experiment effect, the size of the imaging hole 21 can be adjusted, so that the small-hole imaging effect can be observed for multiple times, the second knob 25 is rotated to drive the adjusting screw 24 to rotate downwards, the baffle 22 can be driven to move downwards, and the actual size of the imaging hole 21 can be adjusted. After the adjustment is completed, by closing the two box doors 7, the candle 20 is prevented from being blown out by external wind. The utility model has simple structure, is convenient for multiple times of adjustment in optical experiments and is convenient for storage and carrying.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. An optical experiment workbench comprises a base (1) and is characterized in that four corners of the bottom of the base (1) are rotatably provided with universal wheels, the top of the base (1) is provided with an accommodating box (3) in a fixed manner, the top of the accommodating box (3) is provided with an opening, two rotating grooves are formed between the accommodating box (3) and the base (1), screw guide sleeves (11) are rotatably arranged in the two rotating grooves, first umbrella teeth (10) are fixedly sleeved on the two screw guide sleeves (11), screw rods (9) are screwed on the top ends of the two screw rods (9), the same experiment box (5) is fixedly arranged on the top ends of the two screw rods (9), two box doors (7) are rotatably arranged on one side of the experiment box (5) through hinges, ventilation holes (6) are formed in the two box doors (7), and the same slide rod (14) is fixedly arranged on the inner walls of the two sides of the experiment box (5), slide bar (14) are gone up the slip and are cup jointed two sliding sleeves (16) and top fixed mounting have light screen (13), and the top of two sliding sleeves (16) is fixed mounting respectively has candle (20) and shielding plate (17), shielding plate (17) are located between light screen (13) and candle (20) and shielding plate (17) on seted up imaging hole (21), movable groove (23) have been seted up at imaging hole's (21) top, movable groove (23) interior movable mounting have with baffle (22) of imaging hole (21) looks adaptation, rotate on the both sides inner wall of containing box (3) and install same pivot, two second umbrella teeth (8) have been cup jointed in the pivot fixedly, two second umbrella teeth (8) respectively with corresponding first umbrella tooth (10) intermeshing.

2. An optical laboratory bench according to claim 1, characterized in that a graduated scale (12) is fixedly mounted on the top inner wall of the laboratory box (5).

3. An optical laboratory bench according to claim 1, characterized in that any end of the shaft extends to the outside of the container (3) and is fixedly connected with the turntable (2).

4. An optical laboratory bench according to claim 1, characterized in that both doors (7) are made of transparent glass and are fixedly provided with handles (4) on the outer sides.

5. The optical experiment workbench according to claim 1, wherein a plurality of limiting grooves are formed in the bottom of the sliding rod (14) at equal intervals, limiting screws (19) matched with the limiting grooves are installed at the bottoms of the two sliding sleeves (16) in a threaded manner, and first knobs (18) are fixedly sleeved at the bottom ends of the two limiting screws (19).

6. The optical experiment workbench according to claim 1, wherein two springs (15) are sleeved on the sliding rod (14), one end of each spring (15) is fixed on the corresponding sliding sleeve (16), and the other end is fixed on the sliding rod (14).

7. An optical experiment table as claimed in claim 1, wherein the top of the shielding plate (17) is threadedly provided with an adjusting screw (24), the bottom end of the adjusting screw (24) is rotatably connected with the top of the baffle plate (22), and the top end of the adjusting screw is fixedly sleeved with a second knob (25).