Pulley mechanics experiment demonstrator

Abstract

The utility model provides a pulley mechanics experiment demonstrator, and belongs to the technical field of experiment teaching aids. The problems that a pulley cannot be adsorbed on a blackboard, and teaching is inconvenient for teachers are solved. The pulley mechanics experiment demonstrator comprises a shell, a plurality of supporting blocks are arranged on one side of the shell, each supporting block is provided with a first receding groove, the first receding grooves are used for installing magnets, a pulley and a display device used for displaying the torque of the pulley are arranged on the other side of the shell, and a detection device used for detecting the torque of the pulley is arranged in the shell. The blackboard eraser has the advantages of being capable of being adsorbed on a blackboard, facilitating teaching of teachers and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental teaching aids, and particularly relates to a pulley mechanics experimental demonstrator. Background Art

[0002] A pulley is a small wheel with grooves around it that can rotate around an axis. A simple machine that can rotate around a central axis is called a pulley, which is composed of a grooved disc that can rotate around a central axis and a flexible cable (rope, tape, steel cable, chain, etc.) that crosses the disc. A pulley block is a simple machine composed of multiple movable pulleys and fixed pulleys. It can save effort and change the direction of force. In the existing pulley teaching process, a bracket is needed to fix the pulley so that the teacher can conduct experiments and teaching conveniently. The pulley cannot be placed directly on the blackboard for demonstration. Summary of the invention

[0003] The utility model aims to provide a pulley mechanics experiment demonstrator in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a pulley mechanics experiment demonstrator, characterized in that it includes a shell, a plurality of support blocks are arranged on one side of the shell, the support blocks are provided with a first clearance groove, the first clearance groove is used to install a magnet, a pulley and a display device for displaying the pulley torque are arranged on the other side of the shell, and a detection device for detecting the pulley torque is arranged in the shell.

[0005] The working principle of the utility model is as follows: when the teacher needs to conduct an experiment, the shell can be directly magnetically attracted to the blackboard through a magnet, which is convenient for students to watch the experimental results. The experiment can be pulled, slid and rotated, and other pulleys can be placed on the blackboard for cooperation. At the same time, the detection device detects the torque of the pulley, the detection device is electrically connected to the display device, the detection device transmits the torque signal to the display device, and the display device displays the torque, which is intuitively displayed to students for easy understanding by students.

[0006] In the above-mentioned pulley mechanics experiment demonstrator, the shell includes a box body and a box cover, the box body and the box cover are detachably connected, and the support block is arranged on the box cover.

[0007] In the above pulley mechanics experiment demonstrator, the detection device adopts a torque sensor, and the torque sensor is arranged on the side of the box body close to the box cover.

[0008] In the above-mentioned pulley mechanics experiment demonstrator, the box body is provided with a first clearance opening, the torque sensor is connected to a drive motor, the output shaft of the drive motor is connected to the pulley, and the first clearance opening is used for the output shaft of the drive motor to pass through.

[0009] In the above-mentioned pulley mechanics experiment demonstrator, a first mounting block, a second mounting block, an extension block and a fixed block are arranged in the shell, the first mounting block is fixedly arranged on the box body, the extension block is used to connect the first mounting block and the second mounting block, and the second mounting block and the fixed block are used to fix the torque sensor.

[0010] In the above-mentioned pulley mechanics experiment demonstrator, the display device includes a circuit board, a power supply and an LED display screen, the power supply is used to supply power to the circuit board, the LED display screen is electrically connected to the circuit board, and the LED display screen is used to display the torque reading.

[0011] In the above pulley mechanics experiment demonstrator, a switch and a plurality of indicator lights are provided on the circuit board.

[0012] In the above-mentioned pulley mechanics experiment demonstrator, a charging port for charging is provided on the box body.

[0013] In the above pulley mechanics experiment demonstrator, the box body is provided with a plurality of connecting columns, the box cover is provided with a plurality of second clearance grooves, and threaded holes are provided in the second clearance grooves and the connecting columns.

[0014] In the above-mentioned pulley mechanics experimental demonstrator, a reinforcing rib is arranged in the first clearance groove.

[0015] Compared with the prior art, the utility model has the advantage of being able to be magnetically attached to the blackboard, making it convenient for teachers to teach. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the back side of the utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0019] In the figure, 1. shell; 2. support block; 3. first clearance groove; 4. pulley; 5. display device; 6. torque sensor; 7. box body; 8. box cover; 9. first clearance opening; 10. drive motor; 11. first mounting block; 12. second mounting block; 13. extension block; 14. fixing block; 15. circuit board; 16. power supply; 17. LED display; 18. switch; 19. indicator light; 20. charging port; 21. connecting column; 22. second clearance groove; 23. threaded hole; 24. reinforcing rib. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1-Figure 3 As shown, the pulley mechanics experiment demonstrator comprises a shell 1, a plurality of support blocks 2 are arranged on one side of the shell 1, the support blocks 2 are provided with a first clearance groove 3, the first clearance groove 3 is used to install a magnet, a pulley 4 and a display device 5 for displaying the torque of the pulley 4 are arranged on the other side of the shell 1, and a detection device for detecting the torque of the pulley 4 is arranged in the shell 1.

[0022] To further elaborate, the housing 1 includes a box body 7 and a box cover 8, the box body 7 and the box cover 8 are detachably connected, and the support block 2 is arranged on the box cover 8, which is convenient for installation and maintenance.

[0023] To elaborate further, the detection device adopts a torque sensor 6, and the torque sensor 6 is arranged on the side of the box body 7 close to the box cover 8. The torque sensor 6 is used to detect data with high accuracy and speed to meet teaching needs.

[0024] To elaborate further, the box body 7 is provided with a first clearance opening 9, the torque sensor 6 is connected to the drive motor 10, the output shaft of the drive motor 10 is connected to the pulley 4, the first clearance opening 9 is used for the output shaft of the drive motor 10 to pass through, the drive motor 10 can drive the pulley 4 to rotate, so that the pulley 4 pulls the line, and the torque sensor 6 will also detect the torque.

[0025] In further detail, a first mounting block 11, a second mounting block 12, an extension block 13 and a fixing block 14 are provided in the shell 1. The first mounting block 11 is fixedly provided on the box body 7. The extension block 13 is used to connect the first mounting block 11 and the second mounting block 12. The second mounting block 12 and the fixing block 14 are used to fix the torque sensor 6. This arrangement is used to fix the torque sensor 6 on the box body 7 without conflicting with the first clearance opening 9, thereby increasing the stability of the torque sensor 6.

[0026] In further detail, the display device 5 includes a circuit board 15, a power supply 16 and an LED display screen 17. The power supply 16 is used to supply power to the circuit board 15. The LED display screen 17 is electrically connected to the circuit board 15. The LED display screen 17 is used to display torque readings. The circuit board 15 is electrically connected to the torque sensor 6 to receive signals from the torque sensor 6 and control the LED display screen 17 to display corresponding data.

[0027] To elaborate further, a switch 18 and a plurality of indicator lights 19 are provided on the circuit board 15. In the present embodiment, two indicator lights 19 are provided to indicate whether the power supply 16 is turned on and whether the power is sufficient, which can be expressed to the teacher intuitively.

[0028] In further details, the box body 7 is provided with a charging port 20 for charging. The use of a rechargeable power source 16 is more environmentally friendly and no longer requires battery replacement, which is more convenient.

[0029] To elaborate further, the box body 7 is provided with a plurality of connecting columns 21, and the box cover 8 is provided with a plurality of second make way grooves 22. Both the second make way grooves 22 and the connecting columns 21 are provided with threaded holes 23. In this embodiment, there are four connecting columns 21 and four second make way grooves 22, which are arranged at the four corners of the box body 7 and the box cover 8 and are fixed by screws. Second make way grooves are provided to hide the screws. This solution is convenient for disassembly and maintenance.

[0030] To further elaborate, a reinforcing rib 24 is provided in the first clearance groove 3, and the reinforcing rib 24 is used to increase the supporting strength of the support block 2 and reduce the bending of the support block 2 under the action of external force.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0032] Although a large number of terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A pulley mechanics experiment demonstrator, characterized in that: The invention comprises a shell (1), wherein one side of the shell (1) is provided with a plurality of support blocks (2), wherein the support blocks (2) are provided with a first clearance groove (3), wherein the first clearance groove (3) is used to install a magnet, and the other side of the shell (1) is provided with a pulley (4) and a display device (5) for displaying the torque of the pulley (4), and a detection device for detecting the torque of the pulley (4) is provided inside the shell (1).

2. A pulley mechanics experimental demonstrator according to claim 1, characterized in that: The housing (1) comprises a box body (7) and a box cover (8); the box body (7) and the box cover (8) are detachably connected; and the support block (2) is arranged on the box cover (8).

3. A pulley mechanics experimental demonstrator according to claim 2, characterized in that: The detection device adopts a torque sensor (6), and the torque sensor (6) is arranged on a side of the box body (7) close to the box cover (8).

4. A pulley mechanics experimental demonstrator according to claim 3, characterized in that: The box body (7) is provided with a first clearance opening (9), the torque sensor (6) is connected to a drive motor (10), the output shaft of the drive motor (10) is connected to the pulley (4), and the first clearance opening (9) is used for the output shaft of the drive motor (10) to pass through.

5. A pulley mechanics experimental demonstrator according to claim 3, characterized in that: A first mounting block (11), a second mounting block (12), an extension block (13) and a fixing block (14) are arranged in the housing (1); the first mounting block (11) is fixedly arranged on the box body (7); the extension block (13) is used to connect the first mounting block (11) and the second mounting block (12); the second mounting block (12) and the fixing block (14) are used to fix the torque sensor (6).

6. A pulley mechanics experimental demonstrator according to claim 1, characterized in that: The display device (5) comprises a circuit board (15), a power supply (16) and an LED display screen (17), wherein the power supply (16) is used to supply power to the circuit board (15), the LED display screen (17) is electrically connected to the circuit board (15), and the LED display screen (17) is used to display torque readings.

7. A pulley mechanics experimental demonstrator according to claim 6, characterized in that: The circuit board (15) is provided with a switch (18) and a plurality of indicator lights (19).

8. A pulley mechanics experimental demonstrator according to claim 2, characterized in that: The box body (7) is provided with a charging port (20) for charging.

9. A pulley mechanics experimental demonstrator according to claim 2, characterized in that: The box body (7) is provided with a plurality of connecting columns (21), and the box cover (8) is provided with a plurality of second clearance grooves (22), and threaded holes (23) are provided in both the second clearance grooves (22) and the connecting columns (21).

10. A pulley mechanics experimental demonstrator according to claim 1, characterized in that: A reinforcing rib (24) is provided in the first clearance groove (3).

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