CN214811045U

CN214811045U - Middle school physics experiment teaching tool

Info

Publication number: CN214811045U
Application number: CN202121174558.3U
Authority: CN
Inventors: 孙昭军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-23
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a middle school physics experiment teaching tool, which comprises a bracket, wherein the bracket is provided with a test bench, the top of the test bench is provided with a protective cover, sliding grooves are arranged at the two ends of the test bench, lengthening plates are connected in each sliding groove in a sliding way, one end of each lengthening plate is provided with a limiting push-pull plate positioned outside the sliding groove, and a limiting component for preventing the lengthening plate from over-displacement is arranged on the test bench; two ends of the experiment table are provided with threaded limiting pins, one end of the lengthened plate, which is positioned in the sliding groove, is provided with a first threaded hole, and one end of the lengthened plate, which is positioned outside the sliding groove, is provided with a second threaded hole; in an initial state, each lengthened plate is positioned in the corresponding sliding groove, the threaded limiting pin penetrates through the second threaded hole, and the protective cover is detachably covered on the experiment table; the utility model discloses compact structure can adjust the length of laboratory bench according to the experiment demand, and the result of use is better.

Description

Middle school physics experiment teaching tool

Technical Field

The utility model relates to a teaching tool specifically is a middle school physics experiment teaching tool.

Background

Physics is the subject of studying the most general laws of motion and basic structures of substances. As the leading subject of natural science, physical studies are as large as the universe and as small as the most basic motion forms and laws of all substances such as basic particles, and therefore, the method becomes the research foundation of other natural science subjects.

In the teaching process of the middle school physical experiment, experimental equipment is often placed on an experiment table, and the physical experiment is carried out on the experiment table. However, the existing experiment table is fixed in length, so that special physical experiments cannot be performed, if a convex lens imaging experiment needs to be carried out, experiment equipment needs to be placed to a certain distance, the existing experiment table is often unable to meet the distance requirement, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a middle school physics experiment teaching tool to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a middle school physics experiment teaching tool comprises a support, wherein an experiment table is arranged on the support, a protective cover is arranged at the top of the experiment table, sliding grooves are formed in two ends of the experiment table, lengthened plates are connected in the sliding grooves in a sliding mode, a limiting push-pull plate located outside the sliding grooves is arranged at one end of each lengthened plate, and a limiting assembly for preventing the lengthened plates from being over-displaced is arranged on the experiment table;

two ends of the experiment table are provided with threaded limiting pins, one end of the lengthened plate, which is positioned in the sliding groove, is provided with a first threaded hole, and one end of the lengthened plate, which is positioned outside the sliding groove, is provided with a second threaded hole; under initial condition, each extension plate is located corresponding sliding tray, and the screw thread spacer pin passes the second screw hole, and the protection casing can be dismantled the cover and establish on the laboratory bench.

As a further aspect of the present invention: the limiting assembly comprises a limiting block which is detachably arranged at one end, located in the sliding groove, of the lengthened plate, and a strip-shaped hole which is matched with the limiting block is formed in the bottom of the experiment table.

As a further aspect of the present invention: the upper end of the limiting block is provided with a threaded plug, and the lengthened plate is provided with a threaded slot matched with the threaded plug; the limiting block is detachably connected with the lengthened plate through the matching of the threaded plug and the threaded slot.

As a further aspect of the present invention: the bottom of the protective cover is provided with a fixing ring, each limiting push-pull plate is provided with a positioning hole, the fixing ring is provided with positioning rods which correspond to the positioning holes one by one, and a fixing structure is arranged between the limiting push-pull plate and the positioning rods; the protective cover is detachably covered on the experiment table through the mutual matching of the fixing ring, the limiting push-pull plate, the positioning hole, the positioning rod and the fixing structure.

As a further aspect of the present invention: the fixed structure comprises a mounting groove arranged on the limiting push-pull plate, a movable rod is connected in the mounting groove in a sliding manner, and a fixed groove matched with the movable rod is arranged on the positioning rod; one end of the movable rod, which is far away from the fixed groove, is provided with an adjusting bolt, and an adjusting nut matched with the adjusting bolt is arranged on the limiting push-pull plate.

Compared with the prior art, the beneficial effects of the utility model are that:

by adopting the structure, the utility model, through the mutual cooperation of the sliding groove, the lengthened plate, the limiting push-pull plate, the limiting component, the thread limiting pin, the first threaded hole and the second threaded hole, under the normal state, each lengthened plate is taken in the corresponding sliding groove, and the thread limiting pin passes through the second threaded hole, the lengthened plate is fixed, and the lengthened plate is prevented from moving; in this state, ordinary physical experiments can be performed on the laboratory bench.

When the length of laboratory bench does not satisfy the experiment requirement, the spacing push-and-pull board of accessible will lengthen the board and take out, the length of extension laboratory bench to pass first screw hole with the screw thread spacer pin, prevent to lengthen the board and remove, can carry out special physics experiment, compact structure, the result of use is better.

In addition, through the protection casing that sets up to and the protection casing can dismantle the cover through solid fixed ring, spacing push-and-pull board, locating hole, locating lever and fixed knot construct and establish on the laboratory bench, after the experiment is accomplished, can be with extension board income sliding tray in, then place experimental apparatus on the laboratory bench, fix the protection casing again, can protect experimental apparatus, avoid experimental apparatus to suffer destruction.

Drawings

Fig. 1 is a schematic structural diagram of a non-working state in a middle school physical experiment teaching tool.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of a working state in a middle school physics experiment teaching tool.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.

In the figure: 1. a support; 2. a laboratory bench; 3. a protective cover; 4. a sliding groove; 5. a lengthening plate; 6. a limit push-pull plate; 7. a limiting component; 701. a limiting block; 702. a strip-shaped hole; 703. a threaded plug; 704. a threaded socket; 8. a threaded limit pin; 9. a first threaded hole; 10. a second threaded hole; 11. a fixing ring; 12. positioning holes; 13. positioning a rod; 14. mounting grooves; 15. a movable rod; 16. fixing grooves; 17. adjusting the bolt; 18. and adjusting the nut.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-4, a middle school physics experiment teaching tool comprises a support 1, wherein an experiment table 2 is arranged on the support 1, a protective cover 3 is arranged at the top of the experiment table 2, sliding grooves 4 are arranged at two ends of the experiment table 2, elongated plates 5 are slidably connected in the sliding grooves 4, a limiting push-pull plate 6 positioned outside the sliding grooves 4 is arranged at one end of each elongated plate 5, and a limiting assembly 7 for preventing the elongated plates 5 from over-displacement is arranged on the experiment table 2; two ends of the experiment table 2 are provided with threaded limit pins 8, one end of the lengthened plate 5, which is positioned in the sliding groove 4, is provided with a first threaded hole 9, and one end of the lengthened plate 5, which is positioned outside the sliding groove 4, is provided with a second threaded hole 10; under initial condition, each extension plate 5 is located corresponding sliding tray 4, and screw thread spacer pin 8 passes second screw hole 10, and protection casing 3 can be dismantled the cover and establish on laboratory bench 2. In a normal state, each elongated plate 5 is received in the corresponding sliding groove 4, and the threaded limit pin 8 passes through the second threaded hole 10 to fix the elongated plate 5 and prevent the elongated plate 5 from moving; in this state, a general physical experiment can be performed on the laboratory table 2. When the length of laboratory bench 2 does not satisfy the experiment requirement, the spacing push-and-pull board of accessible 6 will be lengthened 5 and take out, the length of extension laboratory bench 2 to pass first screw hole 9 with screw thread spacer pin 8, prevent that extension board 5 from removing, can carry out special physics experiment, compact structure, the result of use is better.

Wherein, spacing subassembly 7 is equipped with the bar hole 702 that suits with stopper 701 in the bottom of laboratory bench 2 including dismantling the stopper 701 that sets up the one end that is located the sliding tray 4 at extension plate 5, can carry on spacingly to extension plate 5, prevents that extension plate 5 from taking out in the sliding tray 4.

Further, the upper end of the limiting block 701 is provided with a threaded plug 703, and the lengthened plate 5 is provided with a threaded slot 704 matched with the threaded plug 703; the limiting block 701 is detachably connected with the elongated plate 5 through the matching of the threaded plug 703 and the threaded slot 704, and after the limiting block 701 is detached, the elongated plate 5 can be taken out from the sliding groove 4, so that the elongated plate 5 can be replaced conveniently.

Specifically, a fixing ring 11 is arranged at the bottom of the protective cover 3, positioning holes 12 are arranged on each limiting push-pull plate 6, positioning rods 13 corresponding to the positioning holes 12 one by one are arranged on the fixing ring 11, and a fixing structure is arranged between the limiting push-pull plates 6 and the positioning rods 13; the protective cover 3 is detachably covered on the experiment table 2 through the mutual matching of the fixing ring 11, the limiting push-pull plate 6, the positioning hole 12, the positioning rod 13 and the fixing structure. After the experiment is accomplished, can be with 5 income sliding chutes 4 of extension board, then place experimental apparatus on laboratory bench 2, fix protection casing 3 again, can protect experimental apparatus, avoid experimental apparatus to suffer destruction.

Further, the fixing structure comprises a mounting groove 14 arranged on the limit push-pull plate 6, a movable rod 15 is connected in the mounting groove 14 in a sliding manner, and a fixing groove 16 matched with the movable rod 15 is arranged on the positioning rod 13; an adjusting bolt 17 is arranged at one end of the movable rod 15 far away from the fixed groove 16, and an adjusting nut 18 matched with the adjusting bolt 17 is arranged on the limiting push-pull plate 6. Through the cooperation of movable rod 15, fixed slot 16, adjusting bolt 17 and adjusting nut 18, after inserting locating lever 13 in locating hole 12, can carry on spacingly to locating lever 13 to fix protection casing 3, compact structure, each part is difficult for losing convenient to use.

The utility model discloses a theory of operation is: in a normal state, each elongated plate 5 is received in the corresponding sliding groove 4, and the threaded limiting pin 8 passes through the second threaded hole 10 to fix the elongated plate 5; in this state, after the protection cover 3 is removed, a general physical experiment can be performed on the laboratory table 2.

When the length of laboratory bench 2 does not satisfy the experiment requirement, the accessible is spacing to be pulled out extension board 5 by push-and-pull board 6, the length of extension laboratory bench 2 to pass first screw hole 9 with screw thread spacer pin 8, prevent that extension board 5 from removing, can carry out special physics experiment.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The middle school physics experiment teaching tool comprises a support (1) and is characterized in that an experiment table (2) is arranged on the support (1), a protective cover (3) is arranged at the top of the experiment table (2), sliding grooves (4) are formed in two ends of the experiment table (2), an elongated plate (5) is connected in each sliding groove (4) in a sliding mode, a limiting push-pull plate (6) located outside each sliding groove (4) is arranged at one end of each elongated plate (5), and a limiting assembly (7) for preventing the elongated plate (5) from over-displacing is arranged on the experiment table (2);

threaded limiting pins (8) are arranged at two ends of the experiment table (2), a first threaded hole (9) is formed in one end, located in the sliding groove (4), of the lengthened plate (5), and a second threaded hole (10) is formed in one end, located outside the sliding groove (4), of the lengthened plate (5); under initial condition, each extension plate (5) is located corresponding sliding tray (4), and second screw hole (10) are passed in screw thread spacer pin (8), and protection casing (3) can be dismantled the cover and establish on laboratory bench (2).

2. The middle school physics experiment teaching tool according to claim 1, characterized in that the limiting component (7) comprises a limiting block (701) detachably disposed at one end of the elongated plate (5) located in the sliding groove (4), and a strip-shaped hole (702) adapted to the limiting block (701) is disposed at the bottom of the experiment table (2).

3. The middle school physics experiment teaching tool according to claim 2, characterized in that the upper end of the limiting block (701) is provided with a threaded plug (703), and the elongated plate (5) is provided with a threaded socket (704) which is matched with the threaded plug (703); the limiting block (701) is detachably connected with the lengthened plate (5) through the matching of the threaded plug (703) and the threaded slot (704).

4. The middle school physical experiment teaching tool according to claim 1, wherein the bottom of the protective cover (3) is provided with a fixing ring (11), each limiting push-pull plate (6) is provided with a positioning hole (12), the fixing ring (11) is provided with a positioning rod (13) corresponding to each positioning hole (12), and a fixing structure is arranged between each limiting push-pull plate (6) and each positioning rod (13); the protective cover (3) is detachably covered on the experiment table (2) through the mutual matching of the fixing ring (11), the limiting push-pull plate (6), the positioning hole (12), the positioning rod (13) and the fixing structure.

5. The middle school physics experiment teaching tool according to claim 4, characterized in that the fixing structure comprises a mounting groove (14) arranged on the limit push-pull plate (6), a movable rod (15) is connected in the mounting groove (14) in a sliding manner, and a fixing groove (16) matched with the movable rod (15) is arranged on the positioning rod (13); an adjusting bolt (17) is arranged at one end of the movable rod (15) far away from the fixed groove (16), and an adjusting nut (18) matched with the adjusting bolt (17) is arranged on the limiting push-pull plate (6).