Simulation teaching aid for verifying momentum theorem

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Through automatic lubrication and cylinder control system optimization of simulated teaching aid structure, the problems of friction interference and manpower are solved, and the simulation experiment of high-precision automated verification of momentum theorem is realized.

CN223205933UActive Publication Date: 2025-08-08WUHAN SANNIU MIDDLE SCHOOL

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Patent Information

Application Number: CN202422364728.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-09-26
Publication Date: 2025-08-08
Estimated Expiration: 2034-09-26

AI Technical Summary

Technical Problem

The existing simulation teaching aids used to verify the momentum theorem have frictional interference between the simulated drive seat and the guide rail that affects the experimental accuracy, and manpower is required to push the simulated drive seat, making it difficult to achieve automated application of initial velocity and multiple sets of data acquisition.

Method used

The micro oil pump and oil storage cylinder system are used for automatic lubrication, combined with the first and second telescopic cylinders, the thrust force of the simulated driving seat is automatically controlled, and the structure is optimized using spring parts and force sensors to facilitate disassembly, assembly and maintenance, and realize automated lubrication and pushing force control.

Benefits of technology

It reduces friction interference, realizes high-precision and automated operation of simulation experiments, can provide multiple sets of experimental conditions with different initial speeds, and simplifies the operation process.

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Abstract

The utility model discloses a simulation teaching aid for verifying the momentum theorem, which comprises a rack and a simulation guide rail, one end of the inside of the rack is provided with a computer display device, the simulation guide rail is arranged at the other end of the inside of the rack, and two sides of the simulation guide rail are provided with reserved chutes. By installing the oil storage barrel and the like, the performance of the device is optimized, lubricating oil in the oil storage barrel can be guided into the two oil guide pipe fittings by starting the micro oil pump, and then the lubricating oil is automatically guided into the corresponding reserved sliding grooves through the oil spraying holes correspondingly formed in the oil guide pipe fittings; therefore, the device realizes an automatic lubricating function, and one-time automatic lubricating treatment is performed on the simulation guide rail before each simulation experiment, so that the influence of friction force between the simulation driving seat and the simulation guide rail can be effectively reduced, the precision of a simulation experiment result is favorably improved, and interference is relieved.

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Description

Technical Field

[0001] The utility model relates to the technical field of simulation teaching aids, in particular to a simulation teaching aid for verifying the momentum theorem. Background Art

[0002] The law of momentum is one of the universal theorems of dynamics. It states that the increment of an object's momentum is equal to the impulse of the net external force acting on it or the vector sum of the impulses of all external forces. It applies to both macroscopic objects and microscopic particles. The law of momentum is an experimental law. In actual teaching, teachers need to use simulation teaching aids to verify the law of momentum to demonstrate the derivation process of the law of momentum to students. However, there are still some defects in the specific use of simulation teaching aids used to verify the law of momentum.

[0003] When the sliding simulation drive seat on the simulation teaching aid used to verify the momentum theorem moves horizontally on the corresponding simulation guide rail, friction interference will affect the accuracy of the simulation experimental results. In addition, it requires manpower to push the simulation drive seat to apply a driving force and initial velocity, which makes it difficult for the device to automatically apply multiple initial velocities to the simulation drive seat, difficult to realize multiple experimental operations, and difficult to meet the needs of collecting multiple sets of data. Based on this, we propose a new type of simulation teaching aid for verifying the momentum theorem. Utility Model Content

[0004] The purpose of the present invention is to provide a simulation teaching aid for verifying the momentum theorem, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a simulation teaching aid for verifying the momentum theorem, comprising a frame and a simulation guide rail, a computer display device being installed at one end inside the frame, the simulation guide rail being installed at the other end inside the frame, reserved slide grooves being provided on both sides of the simulation guide rail, a simulation drive seat being slidably connected between adjacent reserved slide grooves, oil guide pipes being fixed on both sides inside the simulation guide rail, oil injection holes being evenly provided on the oil guide pipes and communicating with the reserved slide grooves, a micro oil pump being installed between adjacent oil guide pipes, an oil storage cylinder being threadedly connected to the input end of the micro oil pump, a spring being installed at one end of the simulation drive seat, a force sensor matching the spring being installed at one end of the simulation guide rail, a photoelectric gate being installed on the simulation guide rail between the force sensor and the simulation drive seat, a first telescopic cylinder and a second telescopic cylinder matching the simulation drive seat being fixed on the frame in sequence, a pressure sensing sheet and a fixed pressure block being installed on the first telescopic cylinder and the second telescopic cylinder respectively.

[0006] Preferably, the bottom of the frame is evenly clamped with non-slip rubber feet.

[0007] Preferably, reserved sliding strips matching the reserved sliding grooves are welded on both sides of the interior of the simulated driving seat.

[0008] Preferably, the reserved sliding strip is evenly and movably connected with balls, so that the sliding friction between the reserved sliding strip and the reserved sliding groove can be converted into rolling friction by the balls, thereby reducing the influence of friction.

[0009] Preferably, a disassembly and installation structure is formed between the force sensor and the simulation guide rail, and screws are evenly arranged between the force sensor and the simulation guide rail, so that the force sensor is easy to disassemble and maintain.

[0010] Preferably, a disassembly and installation structure is formed between the photoelectric door and the simulation guide rail, and screws are evenly arranged between the photoelectric door and the simulation guide rail, so that the photoelectric door is easy to disassemble and maintain.

[0011] Preferably, one end of the spring member is welded with a threaded assembly column that is threadedly connected to the simulated driving seat, so that the spring member can be independently disassembled and replaced.

[0012] Preferably, the bottom of the first telescopic cylinder and the pressure sensing sheet are bonded to facilitate monitoring of the magnitude of the driving force applied by the first telescopic cylinder to the simulated driving seat.

[0013] Preferably, one end of the second telescopic cylinder is bonded to the simulated drive seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The simulation teaching aid for verifying the momentum theorem is equipped with a micro oil pump and an oil storage cylinder, so that the device optimizes its own performance. When the micro oil pump is started, the lubricating oil in the oil storage cylinder can be introduced into the interior of the two oil guide pipes, and then the lubricating oil is automatically introduced into the corresponding reserved slide groove through the corresponding oil injection holes on each oil guide pipe. This enables the device to realize the function of automatic lubrication, ensuring that the simulation guide rail is automatically lubricated before each simulation experiment. This can effectively reduce the influence of the friction between the simulation drive seat and the simulation guide rail, which is conducive to improving the accuracy of the simulation experiment results and reducing interference;

[0016] (2) The simulation teaching aid for verifying the momentum theorem is equipped with a first telescopic cylinder and a simulation drive seat, so that when the device is actually operated, the user can control the first telescopic cylinder to apply a thrust to the simulation drive seat through a computer display device, and the thrust size can be monitored in real time by using the pressure sensing plate at the output end of the first telescopic cylinder. When the preset value is reached, the first telescopic cylinder stops and the second telescopic cylinder starts, driving the fixed pressure block to move upward and separate from the simulation drive seat, so that the simulation drive seat can slide horizontally along the simulation guide rail under the action of appropriate thrust, so that the simulation drive seat can be automatically applied with different sizes of thrust, and the greater the thrust, the greater the movement speed of the simulation drive seat. This facilitates the provision of multiple groups of experimental methods with different initial velocities for simulation experiments, and achieves the advantages of saving time and effort and being easy to operate compared to the common method of manually pushing the simulation drive seat to move.

[0017] (3) The simulation teaching aid for verifying the momentum theorem optimizes its own structure by installing a spring part and a simulation drive seat. On the one hand, a threaded assembly column is welded at one end of the spring part and is threadedly connected to the simulation drive seat, which facilitates the disassembly and replacement of the spring part. On the other hand, screws are evenly arranged between the force sensor and the simulation guide rail, which facilitates the disassembly, assembly and replacement of the force sensor. Screws are evenly arranged between the photoelectric gate and the simulation guide rail, which facilitates the independent disassembly, assembly and maintenance of the photoelectric gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0020] Figure 3 This is a schematic diagram of the front view structure of the oil storage cylinder of the utility model;

[0021] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a simulated drive seat of the utility model when viewed from above;

[0022] Figure 5 This is a rear view structural diagram of the spring component of the utility model in a disassembled state.

[0023] In the figure: 1. Frame; 2. Oil storage cylinder; 3. Guide rail for simulation; 4. Force sensor; 5. Photoelectric gate; 6. Spring member; 7. Computer display device; 8. Simulation drive seat; 9. Fixed pressure block; 10. First telescopic cylinder; 11. Pressure sensing plate; 12. Second telescopic cylinder; 13. Micro oil pump; 14. Oil injection hole; 15. Oil guide pipe; 16. Ball bearing; 17. Reserved slide; 18. Threaded assembly column; 19. Reserved slide groove. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The present invention provides an embodiment of a simulation teaching aid for verifying the momentum theorem, comprising a frame 1 and a simulation guide rail 3. A computer display device 7 is mounted on one end of the frame 1, and the simulation guide rail 3 is mounted on the other end of the frame 1. Reserved slide grooves 19 are provided on both sides of the simulation guide rail 3, and a simulation drive seat 8 is slidably connected between adjacent reserved slide grooves 19.

[0026] Oil guide pipes 15 are fixed on both sides of the simulation guide rail 3. Oil injection holes 14 connected to the reserved chute 19 are evenly arranged on the oil guide pipes 15. Micro oil pumps 13 are installed between adjacent oil guide pipes 15. The input end of the micro oil pump 13 is threadedly connected to the oil storage cylinder 2.

[0027] A spring member 6 is mounted on one end of the simulation drive seat 8, a force sensor 4 matching the spring member 6 is mounted on one end of the simulation guide rail 3, and a photoelectric gate 5 is mounted on the simulation guide rail 3 between the force sensor 4 and the simulation drive seat 8;

[0028] The frame 1 is fixed with a first telescopic cylinder 10 and a second telescopic cylinder 12 that match the simulated drive seat 8 in sequence. The first telescopic cylinder 10 and the second telescopic cylinder 12 are respectively installed with a pressure sensing piece 11 and a fixed pressure block 9;

[0029] The bottom of the rack 1 is evenly clamped with anti-skid rubber feet; the anti-skid rubber feet improve the anti-skid stability of the rack 1;

[0030] Both sides of the interior of the simulated drive seat 8 are welded with reserved slide strips 17 that match the reserved slide grooves 19;

[0031] The reserved slide 17 is evenly and movably connected with a ball 16; the ball 16 can be used to convert the sliding friction between the reserved slide 17 and the reserved chute 19 into rolling friction, thereby reducing the influence of friction;

[0032] The force sensor 4 and the simulation guide rail 3 form a disassembly and installation structure, and screws are evenly arranged between the force sensor 4 and the simulation guide rail 3 to facilitate the disassembly and replacement of the force sensor 4.

[0033] A disassembly and installation structure is formed between the photoelectric door 5 and the simulation guide rail 3, and screws are evenly arranged between the photoelectric door 5 and the simulation guide rail 3; making it easy to realize the independent disassembly and maintenance of the photoelectric door 5;

[0034] One end of the spring member 6 is welded with a threaded assembly column 18 that is threadedly connected to the simulated drive seat 8; making it easy to disassemble and replace the spring member 6;

[0035] The bottom of the first telescopic cylinder 10 is bonded to the pressure sensing sheet 11, making it easy to monitor the magnitude of the driving force applied by the first telescopic cylinder 10 to the simulated driving seat 8;

[0036] One end of the second telescopic cylinder 12 is bonded to the simulated drive seat 8;

[0037] During use, the user can control the first telescopic cylinder 10 through the computer display device 7 to apply a thrust to the simulated drive seat 8, and the pressure sensing plate 11 at the output end of the first telescopic cylinder 10 can be used to monitor the thrust size in real time. When the preset value is reached, the first telescopic cylinder 10 stops and the second telescopic cylinder 12 starts, driving the fixed pressure block 9 to move upward and away from the simulated drive seat 8, so that the simulated drive seat 8 can slide horizontally along the simulation guide rail 3 under the action of appropriate thrust, so that the simulated drive seat 8 can be automatically applied with different sizes of thrust, and the greater the thrust, the greater the movement speed of the simulated drive seat 8, which is convenient for providing multiple groups of experimental methods with different initial velocities for simulation experiments.

[0038] When the embodiment of the present application is in use: an external power supply is connected, and the user can control the first telescopic cylinder 10 to apply a thrust to the simulated drive seat 8 through the computer display device 7, and the thrust size can be monitored in real time by using the pressure sensing piece 11 at the output end of the first telescopic cylinder 10. When the preset value is reached, the first telescopic cylinder 10 stops and the second telescopic cylinder 12 starts, driving the fixed pressure block 9 to move upward and separate from the simulated drive seat 8, so that the simulated drive seat 8 can slide horizontally along the simulated guide rail 3 under the action of appropriate thrust, so that the simulated drive seat 8 can be automatically applied with different sizes of thrust, and the greater the thrust, the greater the thrust of the simulated drive seat 8. The greater the movement speed, the easier it is to provide multiple groups of experimental methods with different initial velocities for the simulation experiment. Compared with the common method of human-powered movement of the simulation drive seat 8, it achieves the advantages of time-saving, labor-saving and easy operation. Then, when the simulation drive seat 8 slides on the simulation guide rail 3, it will pass through the photoelectric gate 5 and the force sensor 4 in turn, respectively realizing the functions of measuring the light blocking time and real-time force measurement, and then be rebounded back through the spring member 6. During the sliding process, the simulation drive seat 8 is only subjected to an elastic force when it collides. The photoelectric gate 5 measures the two light blocking times of the simulation drive seat 8 when it moves and returns, and the computer display device 7 measures the two speeds based on the displacement speed formula. Data is obtained, which makes it easier for the computer display device 7 to calculate the momentum before and after the collision, and the pressure data changes measured in real time by the force sensor 4 can be calculated to obtain the impulse. These data will be intuitively displayed in an image state on the computer display device 7, and the total impulse and momentum can be automatically calculated, so that the momentum theorem can be verified intuitively and accurately. At the same time, the micro oil pump 13 is started, and the lubricating oil inside the oil storage cylinder 2 can be introduced into the interior of the two oil guide pipes 15, and then the lubricating oil is automatically introduced into the corresponding reserved chute 19 through the corresponding oil injection hole 14 on each oil guide pipe 15, which enables the device to realize the function of automatic lubrication. , ensuring that the simulation guide rail 3 is automatically lubricated before each simulation experiment, which can effectively reduce the influence of the friction between the simulation drive seat 8 and the simulation guide rail 3, which is beneficial to improving the accuracy of the simulation experiment results and reducing interference. In addition, on the one hand, a threaded assembly column 18 threadedly connected to the simulation drive seat 8 is welded at one end of the spring part 6, which facilitates the disassembly and replacement of the spring part 6. On the other hand, screws are evenly arranged between the force sensor 4 and the simulation guide rail 3, which facilitates the disassembly, assembly and replacement of the force sensor 4, and screws are evenly arranged between the photoelectric gate 5 and the simulation guide rail 3, which facilitates the independent disassembly and maintenance of the photoelectric gate 5.

Claims

1. A simulation teaching aid for verifying the momentum theorem, characterized in that: The invention comprises a frame (1) and a simulation guide rail (3), wherein a computer display device (7) is installed at one end of the frame (1), and the simulation guide rail (3) is installed at the other end of the frame (1). Both sides of the simulation guide rail (3) are provided with reserved slide grooves (19), and a simulation drive seat (8) is slidably connected between adjacent reserved slide grooves (19). Both sides of the simulation guide rail (3) are fixed with oil guide pipes (15), and oil injection holes (14) connected to the reserved slide grooves (19) are evenly provided on the oil guide pipes (15). A micro oil pump (13) is installed between adjacent oil guide pipes (15). The input end of the oil pump (13) is threadedly connected to an oil storage cylinder (2); one end of the simulation drive seat (8) is installed with a spring member (6); one end of the simulation guide rail (3) is installed with a force sensor (4) matching the spring member (6); a photoelectric gate (5) is installed on the simulation guide rail (3) between the force sensor (4) and the simulation drive seat (8); a first telescopic cylinder (10) and a second telescopic cylinder (12) matching the simulation drive seat (8) are fixed on the frame (1) in sequence; a pressure sensing plate (11) and a fixed pressure block (9) are respectively installed on the first telescopic cylinder (10) and the second telescopic cylinder (12).

2. A simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: The bottom of the frame (1) is evenly clamped with anti-skid rubber feet.

3. A simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: Reserved slide bars (17) matching the reserved slide grooves (19) are welded on both sides of the interior of the simulated drive seat (8).

4. A simulation teaching aid for verifying the momentum theorem according to claim 3, characterized in that: The reserved slide bar (17) is evenly and movably connected with a ball (16).

5. The simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: A disassembly and installation structure is formed between the force sensor (4) and the simulation guide rail (3), and screws are evenly arranged between the force sensor (4) and the simulation guide rail (3).

6. The simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: A disassembly and installation structure is formed between the photoelectric door (5) and the simulation guide rail (3), and screws are evenly arranged between the photoelectric door (5) and the simulation guide rail (3).

7. The simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: One end of the spring member (6) is welded with a threaded assembly column (18) which is threadedly connected to the simulated drive seat (8).

8. The simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: The bottom of the first telescopic cylinder (10) and the pressure sensing plate (11) are bonded together.

9. The simulation teaching aid for verifying the momentum theorem according to claim 1, characterized in that: One end of the second telescopic cylinder (12) is bonded to the simulated drive seat (8).