CN213958371U - Experiment teaching aid for studying physical friction - Google Patents

Abstract

The utility model discloses an experimental teaching aid for studying physical friction, which relates to the field of physical teaching aids and comprises a base and a friction plate, wherein a support rod is fixedly arranged at the bottom end of the base, an inner groove is arranged on the top end of the base, a rotating shaft is arranged at one end of the base and the friction plate, a protractor is arranged at one end of the base close to the rotating shaft, an arc-shaped sliding groove is arranged on the protractor, a screw rod is arranged on the side wall of the friction plate, a fixed block is fixedly arranged at one end of the friction plate far away from the rotating shaft, a spring dynamometer is arranged on the fixed block, a sliding block is arranged at one end of the spring dynamometer far away from the fixed block, a weight groove is arranged at the top end of the sliding block, an angle adjusting device is arranged between the bottom end of the friction plate far away from the rotating shaft and the base, the operation of the utility model is simple, and the study of the friction under different angles is realized, the diversity of the device is increased, and teachers can conveniently conduct teaching.

Description

Experiment teaching aid for studying physical friction

Technical Field

The utility model relates to a physics teaching aid field specifically is an experiment teaching aid of research physics frictional force.

Background

The physical experiment teaching is one of the important forms for material learning, generally including small in-class experiments, demonstration experiments, out-of-class experiments and the like, and the demonstration experiments are performance demonstration experiments with teachers as main operators; the in-class small experiment is a small experiment of student operation interspersed in the course of classroom teaching; the out-of-class experiment is an experiment which is independently carried out by students according to tasks, requirements and methods arranged by teachers in the out-of-class process and by using some simple equipment or self-made instruments, so that the physical experiment teaching aid is operated and born, the purpose that the teachers carry out demonstration experiments, the students know laws, phenomena and the like related to physics is achieved, and the learning interest of the students is increased.

The existing experimental teaching aid for researching physical friction force is inconvenient to operate, lacks of a special teaching aid and single in function, cannot realize the relation between friction force and gravity of a block under different inclination angles, and is inconvenient for teachers to teach and explain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an experimental teaching aid for researching physical friction force, which solves the problems in the background technology,

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

an experiment teaching aid for researching physical friction force comprises a base and a friction plate, wherein a supporting rod is fixedly arranged at the bottom end of the base, an inner groove is formed in the top end of the base, a rotating shaft is arranged between one end of the friction plate at one end of the base, the base is rotatably connected with the friction plate through the rotating shaft, a protractor is arranged at one end, close to the rotating shaft, of the base, an arc-shaped sliding groove is formed in the protractor, a screw is arranged on the side wall of the friction plate and is in sliding connection with the arc-shaped sliding groove, a fixed block is fixedly arranged at one end, far away from the rotating shaft, of the friction plate, a spring dynamometer is arranged on the fixed block, a sliding block is arranged at one end, far away from the fixed block, of the spring dynamometer, a weight groove is formed in the top end of the sliding block, a sliding plate is arranged at the bottom end of the sliding plate and is in sliding connection with the friction plate, an angle adjusting device is arranged between the bottom end of the friction plate far away from the rotating shaft and the base.

On the basis of the technical scheme, the utility model discloses still provide following optional technical scheme:

in one alternative: the angle adjusting device comprises an articulated rod, a hand rocker, an articulated seat and a threaded rod, wherein the articulated seat is fixedly arranged at the bottom of the friction plate, one end of the articulated rod is articulated with the articulated seat, the threaded rod is fixedly arranged between the bottom side walls of the inner grooves, the threaded rod is rotatably connected with the side walls of the inner grooves, one end of the hand rocker is rotatably connected with the side walls of the base, and the hand rocker is fixedly connected with the threaded rod.

In one alternative: the one end of keeping away from the hand rocker on the inside groove is provided with the bearing, the other end of threaded rod passes through the bearing rotation with the lateral wall of inside groove and is connected.

In one alternative: the bracing piece is four and distributes in four angles of base.

In one alternative: the protractors are two and are distributed on two sides of the base, the screw rods are two, and the screw caps are arranged on the two screw rods.

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

the utility model discloses research physics frictional force's experiment teaching aid realizes the research to east friction power through the spring ergometer that sets up, sliding block, sliding plate and friction plate, and it is rotatory to drive the threaded rod through the hand rocker that sets up, and then realizes that hinged rod 5 upwards jacks up the one end of friction plate 4, realizes carrying out the research of frictional force under gravity, frictional force and the different inclination of friction plate of research object, the utility model is simple in operation, the research of frictional force under the realization is to different angles has increased the variety of device, and the mr of being convenient for imparts knowledge to students and learns.

Drawings

Fig. 1 is the utility model discloses study physical friction's experiment teaching aid's schematic structure.

Fig. 2 is a schematic structural view of the middle base of the present invention.

Fig. 3 is the three-dimensional structure diagram of the sliding block of the present invention.

Fig. 4 is the connection schematic diagram of the middle hydraulic telescopic rod of the utility model.

Notations for reference numerals: the device comprises a base 1, a support rod 2, a rotating shaft 3, a friction plate 4, a support rod 5, a hand-operated rod 6, an articulated seat 7, a screw rod 8, an arc-shaped sliding groove 9, a protractor 10, an inner groove 11, a threaded rod 12, a bearing 13, a fixed block 14, a spring force measuring device 15, a sliding block 16, a weight groove 17, a sliding plate 18, a hand pull rope 19, a threaded block 20, an angle adjusting device 21, a hydraulic telescopic rod 22 and a rubber cushion 23.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the drawings or description, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practical applications. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

Example 1

Referring to fig. 1 to 3, in the embodiment of the present invention, an experiment teaching aid for studying physical friction force includes a base 1 and a friction plate 4, a support rod 2 is fixedly disposed at the bottom end of the base 1, an inner groove 11 is disposed on the top end of the base 1, a rotation shaft 3 is disposed between one end of the base 1 and one end of the friction plate 4, the base 1 and the friction plate 4 are rotatably connected through the rotation shaft 3, a protractor 10 is disposed at one end of the base 1 close to the rotation shaft 3, an arc-shaped sliding groove 9 is disposed on the protractor 10, a screw 8 is disposed on a side wall of the friction plate 4, the screw 8 is slidably connected with the arc-shaped sliding groove 9, a fixed block 14 is fixedly disposed at one end of the friction plate 4 far from the rotation shaft 3, a spring force measuring device 15 is disposed on the fixed block 14, a sliding block 16 is disposed at one end of the spring force measuring device 15 far from the fixed block 14, a weight groove 17 is arranged at the top end of the sliding block 16, a sliding plate 18 is arranged at the bottom end of the sliding block 16, the bottom end of the sliding plate 18 is connected with the friction plate 4 in a sliding manner, and an angle adjusting device 21 is arranged between the bottom end of the friction plate 4 far away from the rotating shaft 3 and the base 1;

the angle adjusting device 21 comprises an articulated rod 5, a hand rocker 6, an articulated seat 7 and a threaded rod 12, the articulated seat 7 is fixedly arranged at the bottom end of the friction plate 4, one end of the articulated rod 5 is articulated with the articulated seat 7, the threaded rod 12 is fixedly arranged between the bottom side walls of the inner groove 11, the threaded rod 12 is rotatably connected with the side walls of the inner groove 11, one end of the hand rocker 6 is rotatably connected with the side walls of the base 1 and the hand rocker 6 is fixedly connected with one end of the threaded rod 12, the angle adjusting device 21 realizes the research on the physical friction force under different angles, the supporting rods 2 are four and are distributed at four corners of the base 1, the supporting rods 2 are arranged to support the device, so that the device is more stable and reliable, the protractors 10 are two and are distributed at two sides of the base 1, the screw rods 8 are two, the screw caps are arranged on the screw rods 8, screw rod 8 and the nut through setting up realize fixing 4 inclination of device friction plate, prevent because the maloperation hand rocker 6 causes the angle to change, influence measuring result, the one end of keeping away from hand rocker 6 on the inside groove 11 is provided with bearing 13, the other end of threaded rod 12 passes through the bearing rotation with the lateral wall of inside groove 11 and is connected, the utility model is simple in operation, the realization is to the research of frictional force under the different angles, has increased the variety of device, and the mr of being convenient for imparts knowledge to students and study.

The utility model discloses a theory of operation is: when the utility model is used for researching the physical friction force, the sliding block 16 and the sliding plate 18 are placed at opposite positions, then the hand pulling rope is pulled by hand and the sliding plate 18 is pulled towards the direction far away from the hand rocking bar 6, the friction force between the sliding plates 18 of the friction plate 4 is researched, weights with different masses are added into the weight groove 17 through tweezers, the relation between the friction force and the pressure is researched, when the relation between the gravity force, the friction force and the inclination angle needs to be researched, a teacher makes the thread block 20 and the thread rod 12 spirally matched with each other to advance towards the end far away from the hand rocking bar 6 by rotating the hand rocking bar 6, further makes the hinged rod 5 jack up the end of the friction plate 4 far away from the rotating shaft 3, the nut on the screw rod 8 is fixed through the inclination angle of the fixing plate, then the hand pulling rope 19 is pulled by hand, further researching the relation between the friction force and the gravity under the inclination angle, and then the screw cap on the screw rod 8 is unscrewed to adjust the angle again, so that the research on the friction force at different angles is realized.

Example 2

Referring to fig. 4, the difference between this embodiment and embodiment 1 is that the bottom end of the base 1 is provided with the hydraulic telescopic rods 22, the bottom end of the hydraulic telescopic rods 22 is provided with the rubber cushions 23, the number of the hydraulic telescopic rods is 4 and the hydraulic telescopic rods are distributed at four corners of the base 1, the lifting of the whole device is realized through the arranged hydraulic telescopic rods 22, a teacher can conveniently adjust the height according to the height of the teacher, and the arranged rubber cushions 23 reduce the wear of the device and increase the service life of the support notification.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (5)

1. An experiment teaching aid for researching physical friction force comprises a base (1) and a friction plate (4), and is characterized in that a supporting rod (2) is arranged at the bottom fixing of the base (1), an inner groove (11) is formed in the top end of the base (1), a rotating shaft (3) is arranged between one end of the base (1) and one end of the friction plate (4), the base (1) and the friction plate (4) are rotatably connected through the rotating shaft (3), a protractor (10) is arranged at one end, close to the rotating shaft (3), of the base (1), an arc sliding groove (9) is formed in the protractor (10), a screw rod (8) is arranged on the side wall of the friction plate (4), the screw rod (8) is slidably connected with the arc sliding groove (9), and a fixing block (14) is fixedly arranged at one end, far away from the rotating shaft (3), of the friction plate (4), be provided with spring ergograph (15) on fixed block (14), the one end that fixed block (14) were kept away from in spring ergograph (15) is provided with sliding block (16), be provided with weight groove (17) on the top of sliding block (16), the bottom of sliding block (16) is provided with sliding plate (18), the bottom and friction plate (4) sliding connection of sliding plate (18), be provided with angle adjusting device (21) between bottom and base (1) that axis of rotation (3) were kept away from in friction plate (4).

2. The experiment teaching aid of research physics frictional force of claim 1, characterized in that, angle adjusting device (21) include articulated rod (5), hand rocker (6), articulated seat (7), threaded rod (12), the fixed bottom that sets up at friction plate (4) of articulated seat (7), the one end and the articulated seat (7) of articulated rod (5) are articulated, threaded rod (12) are fixed to be provided with between the bottom lateral wall of inside groove (11), threaded rod (12) are rotated with the lateral wall of inside groove (11) and are connected, the one end of hand rocker (6) is rotated with the lateral wall of base (1) and is connected and the one end fixed connection of hand rocker (6) and threaded rod (12).

3. The experiment teaching aid of research physical friction according to claim 2, characterized in that, the one end of keeping away from hand rocking rod (6) on inside groove (11) is provided with bearing (13), the other end of threaded rod (12) passes through the bearing rotation with the lateral wall of inside groove (11) and is connected.

4. An experiment teaching aid for studying physical friction according to claim 1, characterized in that the support rods (2) are four and are distributed at four corners of the base (1).

5. The experiment teaching aid of research physical friction according to claim 1, characterized in that, protractor (10) be two and distribute in the both sides of base (1), screw rod (8) are two, all are provided with the nut on two screw rod (8).

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