Small ball rolling experiment device

Abstract

The utility model discloses a small ball rolling experiment device. The small ball rolling experiment device comprises a limiting pin and a top groove body, according to the small ball rolling experiment device, the outer side of a small ball is provided with a limiting pin penetrating through a top groove body in a sliding mode, the top groove body is provided with a rectangular hole for the limiting pin to penetrate through in a sliding mode, the bottom end of the limiting pin is fixedly connected with a pressing block, the outer side of the pressing block is provided with an L-shaped bracket fixedly connected to the bottom face of the top groove body, and the L-shaped bracket and the pressing block slide in an attached mode; a second switch is fixedly connected to the position, corresponding to the bottom face of the pressing block, of the bottom of the L-shaped bracket, and the falling small ball is borne through a limiting column. The first switch is matched to control the timer to stop timing, meanwhile, the limiting pin is used for limiting the small ball placed in the top groove body, so that the small ball is placed and positioned and does not directly slide down, the limiting condition of the pressing block is controlled through drawing of the T-shaped pin, and therefore the fixed pressing block can conveniently and rapidly abut against the second switch when the limiting pin is released; and the timer is controlled to start timing, so that timing operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of small ball rolling demonstration, in particular to a small ball rolling experimental device. Background Art

[0002] Physics is a natural science that focuses on studying matter, energy, space, and time, especially their respective properties and their relationships with each other. At the same time, physics is also an experimental science. Therefore, when studying physical properties, experimental demonstrations are often required, and the experiment of the rolling speed of a ball also requires corresponding experimental equipment for demonstration.

[0003] In the prior art with publication (announcement) number: CN214671341U, publication (announcement) date: 2021-11-09, a small ball rolling speed experimental device that is easy to adjust is proposed, including a base and a long strip of rolling track, the cross section of the rolling track is V-shaped; the base includes a vertically arranged sleeve and a lifting rod telescopically sleeved in the sleeve, the top of the lifting rod is equipped with a ball joint, and the bottom of the rolling track is rotatably mounted on the base through the ball joint. The utility model has the advantages of good structural stability, easy adjustment, convenient operation and measurement, etc.

[0004] However, in the above-mentioned prior art, the small ball will roll down directly after being placed, which not only fails to locate the placement position well, but also makes it inconvenient to perform timing operations. Therefore, a small ball rolling experimental device is proposed to optimize the above-mentioned prior art. Utility Model Content

[0005] The utility model aims to provide a small ball rolling experimental device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A small ball rolling experimental device comprises a guide groove, wherein the guide groove is evenly provided with a slide groove flush with the inner wall thereof, a guide bar adapted thereto is slidably connected in the slide groove, the guide bar is flush with the inner wall of the guide groove, the ends of the guide bar are fixedly connected with a top groove body having the same cross section as the guide groove, a limit column adapted thereto is provided in the guide groove, a first switch is fixedly connected to the top end face of the limit column, a small ball is provided in the top groove body, a limit pin slidingly penetrating the top groove body is provided on the outer side of the small ball, a rectangular hole for the limit pin to slide through is provided on the top groove body, a pressure block is fixedly connected to the bottom end of the limit pin, and a pressure block is provided on the outer side of the pressure block The L-shaped bracket at the bottom of the slot body slides in fit with the pressure block, a second switch is fixedly connected to the bottom of the L-shaped bracket corresponding to the bottom of the pressure block, a T-shaped pin slides through the side of the L-shaped bracket corresponding to the pressure block, a round hole for the T-shaped pin to pass through is provided on the L-shaped bracket, a tension spring is fixedly connected between the end of the T-shaped pin and the L-shaped bracket, the tension spring is sleeved on the outside of the T-shaped pin, one end of the T-shaped pin is inserted into the pressure block, a jack for inserting the T-shaped pin is provided on the pressure block, a spring sleeved on the outside of the limit pin is provided between the pressure block and the bottom surface of the top slot body, a bottom plate is provided below the guide slot, and a timer is fixedly connected to the bottom plate.

[0008] As a further solution of the utility model: the bottom end of the guide groove is connected with a hinge seat, the hinge seat is fixedly connected to the bottom plate, a protractor is fixedly connected to the hinge seat, and a pointer is fixedly connected to the first protractor on the guide groove.

[0009] As a further solution of the utility model: the top end of the guide groove is hinged with a support seat, the outer sliding sleeve of the support seat is provided with a guide sleeve matched with it, the guide sleeve is fixedly connected to the top surface of the base plate, the side top of the guide sleeve is threadedly connected with a first threaded knob, the first threaded knob is inserted into the guide sleeve, and the guide sleeve is provided with a threaded hole for additional connection of the first threaded knob.

[0010] As a further solution of the utility model: the top slot body is symmetrically fixedly connected to two scale rods on the opposite side of the guide slot, the scale rods are inserted into the guide slot and slidably connected to the guide slot, and a third threaded knob is threadedly connected to the scale rod at the top end of the guide slot.

[0011] As a further solution of the utility model: a scale bar is symmetrically and fixedly embedded on the top surface of the guide groove.

[0012] As a further solution of the utility model: L-shaped ears are symmetrically fixedly connected on both sides of the limit column, the L-shaped ears are buckled on the outside of the guide groove and adapted to the guide groove, the side wall of the L-shaped ear is threadedly connected with a second threaded knob, the second threaded knob passes through the L-shaped ear, and a threaded hole for additional connection of the second threaded knob is opened on the L-shaped ear.

[0013] As a further solution of the utility model: the timer has its own power supply, and the timer is electrically connected to the first switch and the second switch through a wire.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model receives the falling ball through the limit column. The first switch is used to control the timer to stop timing, and the limit pin is used to limit the ball placed in the top groove body, so that the ball is placed and positioned and will not slide down directly. The limit of the pressure block is controlled by pulling the T-shaped pin, so that the fixed pressure block can be quickly pressed against the second switch when the limit pin is released, and the timer is controlled to start timing, thereby facilitating the timing operation.

[0016] 2. The utility model controls the inclination of the guide groove by sliding the support seat in the guide sleeve and locking it with the first threaded knob. The inclination angle is further read by the cooperation of the pointer and the protractor to adjust the inclination angle of the guide groove.

[0017] 3. The guide bar of the utility model can slide in the slide groove, so as to control the effective rolling length of the guide groove and the top groove body as a whole, and the effective length can be read in conjunction with the scale bar and the scale rod. At the same time, the position of the limit column in the guide groove can be controlled by the L-shaped ear and the second threaded knob to control the falling length. Different falling length experiments can be carried out within a total length range, so that the falling distance of the ball can be adjusted, which is convenient for the verification of various data experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a small ball rolling experimental device.

[0019] Figure 2 It is a three-dimensional diagram of a small ball rolling experimental device.

[0020] Figure 3 This is an enlarged view of the local structure of a small ball rolling experimental device.

[0021] In the figure: 1. guide groove; 2. slide groove; 3. guide strip; 4. top groove body; 5. limit column; 6. first switch; 7. small ball; 8. limit pin; 9. pressure block; 10. L-shaped bracket; 11. T-shaped pin; 12. tension spring; 13. spring; 14. bottom plate; 15. timer; 16. hinge seat; 17. support seat; 18. guide sleeve; 19. first threaded knob; 20. scale rod; 21. scale strip; 22. L-shaped ear; 23. second threaded knob; 24. second switch; 25. protractor; 26. pointer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 3 In the embodiment of the utility model, a small ball rolling experimental device includes a guide groove 1, a slide groove 2 flush with the inner wall of the guide groove 1 is evenly opened on the guide groove 1, a guide bar 3 adapted to the guide groove 2 is slidably connected in the slide groove 2, the guide bar 3 is flush with the inner wall of the guide groove 1, and the ends of the guide bar 3 are fixedly connected to a top groove body 4 with the same cross-section as the guide groove 1, a limit column 5 adapted to the guide groove 1 is provided in the guide groove 1, and a first switch 6 is fixedly connected to the top end surface of the limit column 5, a small ball 7 is arranged in the top groove body 4, and a limit pin 8 slidingly passing through the top groove body 4 is arranged on the outer side of the small ball 7, and a rectangular hole for the limit pin 8 to slide through is opened on the top groove body 4, and a pressure block 9 is fixedly connected to the bottom end of the limit pin 8, and an L-shaped fixed connection to the bottom surface of the top groove body 4 is arranged on the outer side of the pressure block 9 The bracket 10, the L-shaped bracket 10 slides in close contact with the pressure block 9, the bottom of the L-shaped bracket 10 is fixedly connected with a second switch 24 corresponding to the bottom surface of the pressure block 9, the side of the L-shaped bracket 10 corresponds to the pressure block 9 and a T-shaped pin 11 slides through it, the L-shaped bracket 10 is provided with a round hole for the T-shaped pin 11 to pass through, and a tension spring 12 is fixedly connected between the end of the T-shaped pin 11 and the L-shaped bracket 10, the tension spring 12 is sleeved on the outside of the T-shaped pin 11, one end of the T-shaped pin 11 is inserted into the pressure block 9, and the pressure block 9 is provided with a jack for inserting the T-shaped pin 11, a spring 13 sleeved on the outside of the limit pin 8 is provided between the pressure block 9 and the bottom surface of the top slot body 4, a bottom plate 14 is provided below the guide slot 1, and a timer 15 is fixedly connected to the bottom plate 14.

[0024] The falling ball 7 is received by the limit column 5. The timer 15 is controlled to stop timing in cooperation with the first switch 6, and the ball 7 placed in the top slot 4 is limited by the limit pin 8, so that the ball 7 is placed and positioned and does not slide down directly. The limit of the pressing block 9 is controlled by pulling the T-shaped pin 11, so that the fixed pressing block 9 can be released by the limit pin 8 and quickly pressed against the second switch 24, and the timer 15 is controlled to start timing, so as to facilitate the timing operation.

[0025] The bottom end of the guide groove 1 is hinged with an articulated seat 16 , which is fixedly connected to the bottom plate 14 , and a protractor 25 is fixedly connected to the articulated seat 16 . A pointer 26 is fixedly connected to the first protractor 25 on the guide groove 1 .

[0026] A support seat 17 is hinged at the top of the guide groove 1, and a guide sleeve 18 matching with the support seat 17 is provided on the outer sliding sleeve. The guide sleeve 18 is fixedly connected to the top surface of the base plate 14, and the top of the side of the guide sleeve 18 is threadedly connected with a first threaded knob 19. The first threaded knob 19 is inserted into the guide sleeve 18, and a threaded hole for the first threaded knob 19 to be additionally connected is opened on the guide sleeve 18.

[0027] The support seat 17 slides in the guide sleeve 18 and is locked and fixed in cooperation with the first threaded knob 19, thereby controlling the inclination of the guide groove 1, and further reading the inclination angle through cooperation between the pointer 16 and the protractor 25, thereby adjusting the inclination angle of the guide groove.

[0028] Two scale rods 20 are symmetrically fixedly connected to the top groove body 4 on one side opposite to the guide groove 1. The scale rods 20 are inserted into the guide groove 1 and slidably connected to the guide groove 1. A third threaded knob is threadedly connected at the top of the guide groove 1 corresponding to the scale rods 20.

[0029] A scale bar 21 is symmetrically and fixedly embedded on the top surface of the guide groove 1 .

[0030] L-shaped ears 22 are symmetrically fixedly connected to both sides of the limiting column 5. The L-shaped ears 22 are buckled on the outside of the guide groove 1 and adapted to the guide groove 1. The side wall of the L-shaped ear 22 is threadedly connected to a second threaded knob 23. The second threaded knob 23 passes through the L-shaped ear 22. A threaded hole is opened on the L-shaped ear 22 for additional connection of the second threaded knob 22.

[0031] The guide bar 3 can slide in the slide groove 2, so as to control the effective rolling length of the guide groove 1 and the top groove body 4 as a whole, and cooperate with the scale bar 21 and the scale rod 20 to read the effective length. At the same time, the position of the limit column 5 in the guide groove 1 can be further controlled by the L-shaped ear 22 and the second threaded knob 22, so as to control the falling length. Different falling length experiments can be carried out within a total length range, so that the falling distance of the ball 7 can be adjusted, which is convenient for the verification of various data experiments.

[0032] The timer 15 has its own power supply, and the timer 15 is electrically connected to the first switch 6 and the second switch 24 through a wire.

[0033] The working principle of the utility model is:

[0034] When in use, the support seat 17 slides in the guide sleeve 18, cooperates with the first threaded knob 19 for locking, cooperates with the angle protractor 25 and the pointer 26, so as to control the inclination angle of the guide groove 1, further pull the top groove body 4 away from the guide groove 1, and control the distance through the scale rod 20, and further lock it through the third threaded knob. At this time, the position of the limit column 5 in the guide groove 1 can be adjusted, and locked through the L-shaped ear 22 and the second threaded knob 23, so as to cooperate with the scale bar 21 to control the actual effective falling distance. At this time, the pressure block 9 is lifted up, so that the limit pin 8 protrudes out of the top groove body 4 until the pressure block 9 and the T The ball 7 is placed in the top slot 4 and is limited by the limit pin 8. The T-shaped pin 11 corresponds to the T-shaped pin 11. At this time, the tension spring 12 allows the T-shaped pin 11 to be inserted into the pressure block 9, so that the position of the limit pin 8 is limited. At this time, the small ball 7 is placed in the top slot 4 and is limited by the limit pin 8. At this time, the T-shaped pin 11 is pulled out to release the limitation on the pressure block 9. Under the effect of the spring 13 and gravity, the pressure block 9 moves downward and rests on the second switch 24. The timer 15 starts timing. At the same time, the limit pin 8 shrinks into the top slot 4. At this time, the small ball 7 can roll downward along the guide bar 3 and the guide groove 1 until the small ball 7 contacts the first switch 6 on the limit column 5. The timer 15 stops timing, thereby completing the small ball experiment.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ball rolling experimental device, comprising a guide groove (1), characterized in that: The guide groove (1) is evenly provided with a slide groove (2) flush with the inner wall thereof, a guide bar (3) adapted thereto is slidably connected in the slide groove (2), the guide bar (3) is flush with the inner wall of the guide groove (1), the ends of the guide bar (3) are fixedly connected to a top groove body (4) having the same cross section as the guide groove (1), a limit column (5) adapted thereto is provided in the guide groove (1), a first switch (6) is fixedly connected to the top end surface of the limit column (5), a small ball (7) is provided in the top groove body (4), a limit pin (8) slidingly penetrating the top groove body (4) is provided on the outer side of the small ball (7), a pressure block (9) is fixedly connected to the bottom end of the limit pin (8), an L-shaped bracket (10) fixedly connected to the bottom surface of the top groove body (4) is provided on the outer side of the pressure block (9), ), the L-shaped bracket (10) and the pressing block (9) are fitted and slidably connected, a second switch (24) is fixedly connected at the bottom of the L-shaped bracket (10) and the corresponding bottom surface of the pressing block (9), a T-shaped pin (11) is slidably penetrated through the side of the L-shaped bracket (10) corresponding to the pressing block (9), a tension spring (12) is fixedly connected between the end of the T-shaped pin (11) and the L-shaped bracket (10), the tension spring (12) is sleeved on the outside of the T-shaped pin (11), one end of the T-shaped pin (11) is inserted into the pressing block (9), a spring (13) sleeved on the outside of the limit pin (8) is provided between the pressing block (9) and the bottom surface of the top groove body (4), a bottom plate (14) is provided below the guide groove (1), and a timer (15) is fixedly connected to the bottom plate (14).

2. A ball rolling experimental device according to claim 1, characterized in that: The bottom end of the guide groove (1) is connected with a hinge seat (16), the hinge seat (16) is fixedly connected to the bottom plate (14), a protractor (25) is fixedly connected to the hinge seat (16), and a pointer (26) is fixedly connected to the first protractor (25) on the guide groove (1).

3. A ball rolling experimental device according to claim 1, characterized in that: The top end of the guide groove (1) is hinged with a support seat (17), and the outer sliding sleeve of the support seat (17) is provided with a guide sleeve (18) matched therewith, and the guide sleeve (18) is fixedly connected to the top surface of the bottom plate (14), and the top of the side edge of the guide sleeve (18) is threadedly connected with a first threaded knob (19), and the first threaded knob (19) is inserted into the guide sleeve (18).

4. A ball rolling experimental device according to claim 1, characterized in that: Two scale rods (20) are symmetrically fixedly connected to one side of the top groove body (4) opposite to the guide groove (1); the scale rods (20) are inserted into the guide groove (1) and are slidably connected to the guide groove (1); and a third threaded knob is threadedly connected at the top end of the guide groove (1) corresponding to the scale rods (20).

5. The ball rolling experimental device according to claim 1, characterized in that: A scale bar (21) is symmetrically and fixedly embedded on the top surface of the guide groove (1).

6. A ball rolling experimental device according to claim 1, characterized in that: L-shaped ears (22) are symmetrically fixedly connected to both sides of the limiting column (5); the L-shaped ears (22) are buckled on the outside of the guide groove (1) and matched with the guide groove (1); the side wall of the L-shaped ear (22) is threadedly connected to a second threaded knob (23); and the second threaded knob (23) passes through the L-shaped ear (22).

7. A ball rolling experimental device according to claim 1, characterized in that: The timer (15) has its own power supply, and the timer (15) is electrically connected to the first switch (6) and the second switch (24) via a wire.

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