CN210777418U

CN210777418U - Demonstration board for mechanics experiments

Info

Publication number: CN210777418U
Application number: CN201921791692.0U
Authority: CN
Inventors: 高新春; 葛月红; 吴新民
Original assignee: Wuhu Keyuan Teaching Equipment Co ltd
Current assignee: Wuhu Keyuan Teaching Equipment Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-06-16
Anticipated expiration: 2029-10-23

Abstract

The utility model relates to the field of mechanics experimental instruments, in particular to a demonstration board for mechanics experiments, which comprises an experiment demonstration board, wherein the experiment demonstration board comprises a first board body and a second board body, the top of the first board body is provided with two transverse grooves and three longitudinal grooves, the side wall of the second board body is provided with two transverse grooves and three longitudinal grooves corresponding to the top of the first board body, when the relation between the extension distance of a spring and the magnitude of elasticity needs to be calculated by using the mechanics experiment demonstration board, the first board body and the second board body are both provided with scale marks, thereby being convenient for measuring the extension distance of the spring and the moving distance of a spring exerciser, being also capable of adjusting different angles to measure the first spring dynamometer and the second spring dynamometer, adopting the tensioners with different specifications to verify that the experimental data are more accurate for multiple times, and being convenient for placing and distributing the first board body and the second board body after being used, save space and conveniently take.

Description

Demonstration board for mechanics experiments

Technical Field

The utility model relates to a mechanics laboratory glassware field, concretely relates to demonstration board for mechanics experiments.

Background

At present, teachers explain and explore the relation between elastic force and spring extension for students in a classroom, only teach through teaching materials, some students can not clarify the relation among various quantities, occasionally some spring force measuring devices can be used as teaching instruments, but the experiment is simple, the manual operation of the students is completely performed, therefore, certain errors exist when the measurement is performed at different angles, whether the equipment is horizontal or vertical measurement can not be judged, therefore, the data collection is not accurate during the measurement, the existing demonstration board is generally not matched with the spring force measuring devices for use, the demonstration board and the spring force measuring devices need to be issued for the students, the issuance and the retraction are troublesome, the loss is easy, and certain influence is caused for the later teaching.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a demonstration board for mechanics experiments.

To achieve the purpose, the utility model adopts the following technical proposal:

the demonstration board for mechanics experiments comprises an experiment demonstration board, wherein the experiment demonstration board comprises a first board body and a second board body, one end of the first board body is rotatably hinged to one end of the second board body, two transverse grooves and three longitudinal grooves are formed in the top of the first board body, the two transverse grooves are arranged in parallel, a first spring dynamometer is installed in one transverse groove and is hinged to one end inside the transverse groove, the side wall of the second board body is provided with two transverse grooves and three longitudinal grooves corresponding to the top of the first board body, the part of the first spring dynamometer, which is located at the top of the first board body, is in inserting fit with the corresponding transverse groove in the second board body, a second spring dynamometer is installed in the other transverse groove in the second board body, the second spring dynamometer is hinged to the transverse groove in the second board body and is in inserting fit with the transverse groove in the first board body, the storage box is characterized in that storage boxes for collecting articles are respectively arranged in three longitudinal grooves in the first plate body, three longitudinal grooves in the second plate body are used for being matched with the first plate body to store the storage boxes, uniform scale marks are arranged on the periphery of the covering surfaces of the first plate body and the second plate body, one ends, far away from the hinged position, of the first plate body and the second plate body are further provided with locking parts, and the locking parts are used for closing the first plate body and the second plate body.

Preferably, two first locating pins are arranged on two side walls of the first plate body respectively, a locating rod is arranged on every two first locating pins in a clamping mode, a second locating pin is arranged on two side walls of the second plate body respectively, one end of each locating rod is arranged on the corresponding second locating pin in a clamping mode, and the other end of each locating rod is arranged on the corresponding first locating pin in a clamping mode.

Preferably, the locking part includes third locating pin and joint piece, the fixed setting of third locating pin is on the lateral wall of keeping away from the second plate body at first plate body, the articulated setting of joint piece is on the lateral wall of keeping away from first plate body at the second plate body, be equipped with on the joint piece with the grafting hole of third locating pin grafting complex, the grafting cooperation of joint piece and third locating pin.

Preferably, first spring ergograph is including articulated seat, articulated piece, measurement box, expanding spring, pointer and couple, articulated seat is fixed to be set up in horizontal recess, and articulated piece is articulated to be set up on articulated seat, and measurement box is fixed to be set up on articulated piece, expanding spring one end is fixed to be set up on articulated piece, and the other end is fixed to be set up on the pointer, pointer slidable sets up in measuring the box, the fixed setting of couple one end is on the pointer, and other end slidable pegs graft and sets up on the lateral wall of measuring the box and pass the measurement box, and the couple is located the outside one end of measurement box and is for colluding the column structure.

Preferably, the pointer is of a sheet structure, the two sides of the pointer are provided with directional blocks, two sliding grooves for the directional blocks to slide are formed in the measuring box, and a plurality of scale grooves are formed in the measuring box and located above the sliding grooves.

Preferably, the measuring box is made of transparent material.

Preferably, two sides of the top of the first plate body are uniformly provided with two scale marks, and two sides of the second plate body are correspondingly provided with two scale marks with the first plate body.

The utility model has the advantages that: when the relation between the spring force and the spring elongation needs to be verified by using the mechanical experiment demonstration board, firstly, the locking part between the first board body and the second board body is removed to open the second board body in a rotating way, three storage boxes are arranged in the first board body, the chest-tensioners with different specifications are stored in the three storage boxes, the chest-tensioners are taken out to be matched with the first spring force measuring device or the second spring force measuring device for use, the relation between the spring elongation distance and the spring force is calculated, the first spring force measuring device and the second spring force measuring device can only rotate without changing positions, and the first board body and the second board body are both provided with scale marks, so that the spring elongation distance and the chest-tensioner moving distance can be conveniently measured, different angles can be adjusted to measure the first spring force measuring device and the second spring force measuring device, the chest-tensioners with different specifications are adopted for multiple verification, and the experiment data are more accurate, and the first plate body and the second plate body are closed after use, so that the storage and the distribution are convenient, the space is saved, and the taking is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

fig. 3 is a schematic perspective view of the second embodiment of the present invention;

FIG. 4 is an enlarged schematic view at B of FIG. 3;

FIG. 5 is a schematic view of the partial split structure of the present invention;

FIG. 6 is an enlarged schematic view at C of FIG. 5;

in the figure: the experiment demonstration board 1, first plate body 2, second plate body 3, horizontal recess 4, vertical recess 5, first spring ergograph 6, second spring ergograph 7, collection box 8, scale mark 9, locking part 10, first locating pin 11, second locating pin 12, third locating pin 13, joint piece 14, spliced eye 15, articulated seat 16, articulated piece 17, measure box 18, expanding spring 19, pointer 20, couple 21, scale groove 22, spout 23, locating lever 24.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the demonstration board for mechanics experiments comprises an experiment demonstration board 1, the experiment demonstration board 1 comprises a first board body 2 and a second board body 3, one end of the first board body 2 is rotatably hinged to one end of the second board body 3, two transverse grooves 4 and three longitudinal grooves 5 are arranged at the top of the first board body 2, the two transverse grooves 4 are arranged in parallel, a first spring dynamometer 6 is arranged in one transverse groove 4, the first spring dynamometer 6 is hinged to one end of the inner part of the transverse groove 4, two transverse grooves 4 and three longitudinal grooves 5 corresponding to the top of the first board body 2 are arranged on the side wall of the second board body 3, the position of the first spring dynamometer 6 at the top of the first board body 2 is in inserting fit with the corresponding transverse groove 4 on the second board body 3, a second spring dynamometer 7 is arranged in the other transverse groove 4 of the second board body 3, the second spring ergograph 7 is articulated and with the horizontal recess 4 grafting cooperation in the first plate body 2 with the horizontal recess 4 on the second plate body 3, is equipped with a collection box 8 that is used for collecting article in the three vertical recess 5 on the first plate body 2 respectively, and three vertical recess 5 on the second plate body 3 is with the first plate body 2 storage collection box 8 of cooperation, all be equipped with even scale mark 9 around first plate body 2 and the 3 lid face of second plate body, the one end that articulated department was kept away from to first plate body 2 and second plate body 3 still is equipped with locking part 10, locking part 10 with closed first plate body 2 and second plate body 3.

The working principle is as follows: when the relation between the spring force and the spring elongation needs to be verified by using the mechanical experiment demonstration board 1, firstly, the locking part 10 between the first board body 2 and the second board body 3 is released to open the second board body 3 in a rotating way, three storage boxes 8 are arranged in the first board body 2, the three storage boxes 8 store the spring devices with different specifications, the spring devices are taken out to be matched with the first spring force measuring device 6 or the second spring force measuring device 7 for use, the relation between the spring elongation distance and the spring force is calculated, because the first spring force measuring device 6 and the second spring force measuring device 7 can only rotate without changing the position, and the first board body 2 and the second board body 3 are both provided with scale marks 9, the spring elongation distance and the spring force measuring device moving distance can be conveniently measured, the first spring force measuring device 6 and the second spring force measuring device 7 can be measured by adjusting different angles, the spring devices with different specifications are verified for multiple times, make experimental data more accurate, and the first plate body 2 of back that finishes of using and second plate body 3 closed be convenient for place and provide, practice thrift the space and conveniently take.

Two first locating pins 11 are respectively arranged on two side walls of the first plate body 2, a locating rod 24 is arranged on each two first locating pins 11 in a clamping mode, a second locating pin 12 is respectively arranged on two side walls of the second plate body 3, one end of each locating rod 24 is connected to the corresponding second locating pin 12 in a clamping mode, the other end of each locating rod is connected to the corresponding first locating pin 11 in a clamping mode, the locating rods 24 are arranged so that when the second plate body 3 is opened, the locating rods 24 can utilize the stability of a triangle to keep the second plate body 3 to be vertically opened or present an opening state of another angle, and multi-angle verification tests are facilitated.

The locking part 10 comprises a third positioning pin 13 and a clamping piece 14, the third positioning pin 13 is fixedly arranged on the side wall of the first plate body 2 far away from the second plate body 3, the clamping piece 14 is hinged to the side wall of the second plate body 3 far away from the first plate body 2, the clamping piece 14 is provided with a plugging hole 15 which is plugged and matched with the third positioning pin 13, the clamping piece 14 is plugged and matched with the third positioning pin 13, and when the first plate body 2 and the second plate body 3 need to be closed, the closing is realized through the clamping piece 14 and the clamping and matching of the third positioning pin 13.

The first spring force measuring device 6 comprises a hinge base 16, a hinge block 17, a measuring box 18, a telescopic spring 19, a pointer 20 and a hook 21, wherein the hinge base 16 is fixedly arranged in the transverse groove 4, the hinge block 17 is hinged on the hinge base 16, the measuring box 18 is fixedly arranged on the hinge block 17, one end of the telescopic spring 19 is fixedly arranged on the hinge block 17, the other end of the telescopic spring is fixedly arranged on the pointer 20, the pointer 20 is slidably arranged in the measuring box 18, one end of the hook 21 is fixedly arranged on the pointer 20, the other end of the hook 21 is slidably inserted and arranged on the side wall of the measuring box 18 and penetrates through the measuring box 18, one end of the hook 21, which is positioned outside the measuring box 18, is of a hook-shaped structure, the hook 21 is hooked by a spring to pull outwards, the hook 21 and the pointer 20 are driven to move outwards, the telescopic spring 19 is extended, the tensile force and the spring extension amount are recorded, the design of the hinge block 17 enables the, so that the experimental data are more accurate.

Pointer 20 is the sheet structure and both sides are equipped with directional piece, are equipped with two gliding spouts 23 of directional piece of confession in the measurement box 18, it still is equipped with a plurality of scale groove 22 to lie in spout 23 top on the measurement box 18, and the design in scale groove 22 makes pointer 20 be convenient for calculate data more when removing.

The measuring box 18 is made of a transparent material, and the transparent material is convenient for observation.

2 top both sides of first plate body evenly are equipped with two

scale marks

9, and 3 both sides of second plate body are equipped with two scale marks 9 with first plate body 2 correspondence, when the first spring ergograph of chest expander horizontal pulling 6, can come dual count through scale mark 9 on the first plate body 2, improve the accuracy of data.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a demonstration board for mechanics experiments, includes experiment demonstration board (1), its characterized in that: the experimental demonstration board (1) comprises a first board body (2) and a second board body (3), one end of the first board body (2) is rotatably hinged to one end of the second board body (3), the top of the first board body (2) is provided with two transverse grooves (4) and three longitudinal grooves (5), the two transverse grooves (4) are arranged in parallel, a first spring dynamometer (6) is installed in one transverse groove (4), the first spring dynamometer (6) is hinged to one end of the inside of the transverse groove (4), the side wall of the second board body (3) is provided with two transverse grooves (4) and three longitudinal grooves (5) corresponding to the top of the first board body (2), the position of the first spring dynamometer (6) located at the top of the first board body (2) is in plug-in fit with the corresponding transverse groove (4) on the second board body (3), and a second spring dynamometer (7) is installed in the other transverse groove (4) of the second board body (3), horizontal recess (4) on second spring ergograph (7) and the second plate body (3) are articulated and with horizontal recess (4) grafting cooperation in first plate body (2), be equipped with one respectively in three vertical recess (5) on first plate body (2) and be used for collecting storage box (8) of article, three vertical recess (5) on the second plate body (3) are with cooperation first plate body (2) storage box (8), all be equipped with even scale mark (9) around first plate body (2) and second plate body (3) lid face, the one end of keeping away from articulated department still is equipped with locking part (10) in first plate body (2) and second plate body (3), and locking part (10) are with closed first plate body (2) and second plate body (3).

2. The demonstration board for the mechanics experiment according to claim 1, wherein: two first locating pins (11) are arranged on two side walls of the first plate body (2) respectively, a locating rod (24) is arranged on every two first locating pins (11) in a clamping mode, a second locating pin (12) is arranged on two side walls of the second plate body (3) respectively, one end of each locating rod (24) is connected with and arranged on the corresponding second locating pin (12), and the other end of each locating rod is connected with and arranged on the corresponding first locating pin (11).

3. The demonstration board for mechanics experiment according to claim 2, wherein: locking part (10) include third locating pin (13) and joint piece (14), third locating pin (13) are fixed to be set up on the lateral wall that second plate body (3) were kept away from in first plate body (2), joint piece (14) are articulated to be set up on the lateral wall that first plate body (2) were kept away from in second plate body (3), be equipped with on joint piece (14) with third locating pin (13) grafting complex spliced eye (15), joint piece (14) and third locating pin (13) cooperation of pegging graft.

4. The demonstration board for mechanics experiment according to claim 3, wherein: first spring ergograph (6) are including articulated seat (16), articulated piece (17), measure box (18), expanding spring (19), pointer (20) and couple (21), articulated seat (16) is fixed to be set up in horizontal recess (4), and articulated piece (17) is articulated to be set up on articulated seat (16), measures box (18) and fixes to be set up on articulated piece (17), expanding spring (19) one end is fixed to be set up on articulated piece (17), and the other end is fixed to be set up on pointer (20), pointer (20) slidable sets up in measuring box (18), couple (21) one end is fixed to be set up on pointer (20), and other end slidable pegs graft and sets up on the lateral wall of measuring box (18) and pass and measure box (18), and couple (21) are located the one end of measuring box (18) outside and are for colluding the form structure.

5. The demonstration board for mechanics experiment according to claim 4, wherein: pointer (20) are sheet structure and both sides are equipped with directional piece, are equipped with two gliding spout (23) of supplying directional piece in measuring box (18), it still is equipped with a plurality of scale groove (22) to lie in spout (23) top on measuring box (18).

6. The demonstration board for mechanics experiment according to claim 5, wherein: the measuring box (18) is made of transparent material.

7. The demonstration board for the mechanics experiment according to claim 1, wherein: two sides of the top of the first plate body (2) are uniformly provided with two scale marks (9), and two sides of the second plate body (3) are correspondingly provided with two scale marks (9) with the first plate body (2).