CN210667383U

CN210667383U - High school physics free fall motion presentation device

Info

Publication number: CN210667383U
Application number: CN201921042009.3U
Authority: CN
Inventors: 黄伽骏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-06-02
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to a high school physics free falling body movement demonstration device, which comprises a base, wherein a supporting column is fixedly arranged at the top of the base, the top of the support is fixedly provided with a frame, the top of the frame is fixedly provided with a driving motor, the bottom of the driving motor is connected with a screw rod through a transmission shaft, the driving motor can drive the screw rod to rotate through the transmission shaft, the screw rod can control the lifting nut to lift through rotation, thereby controlling the lifting of the supporting plate and the dotting timer, facilitating the adjustment of the height of the dotting timer, improving the buffer performance of the receiving tray by arranging the guide rod and the buffer spring, can prevent the damage of the receiving tray caused by the violent impact of the free falling experimental blocks on the receiving tray, the receiving tray can receive the free falling experimental blocks in the demonstration process, the test bench can be prevented from being damaged or injuring the feet of experimenters due to the fact that the free falling body experiment block directly falls on the test bench or the ground.

Description

High school physics free fall motion presentation device

Technical Field

The utility model relates to a high school physics free fall motion presentation device belongs to experimental device technical field.

Background

The object just begins the motion of whereabouts from static in the vacuum under the action of gravity and is called the free fall motion, need make the audio-visual impression of student and know the free fall motion through specific experiment in the physics teaching, need adjust the height of heavy object in order to seek the motion law of free fall and beat the paper tape of different length, and the length of paper tape depends on the distance between free fall experiment piece and the base, among the current test instrument, adjust the initial height of free fall experiment piece and need adjust the height of beating the some time-recorder through the screw, it is troublesome to adjust, and current high school physics free fall motion presentation device is in the demonstration in-process free fall experiment piece directly drops to test bench or ground, cause the test bench to damage easily or injure experimenter's foot, there is certain potential danger, consequently need further improvement.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, provide a high school physics free fall motion demonstration device, the height adjustment of the timing device is convenient, the operation is convenient, through setting up the driving motor, the driving motor can drive the lead screw to rotate through the transmission shaft, the lead screw rotates and can control the lifting nut to lift, and then can control the supporting plate and the timing device to lift, conveniently adjust the height of the timing device, the cushioning performance of the receiving tray can be improved through setting up the guide rod and the buffer spring, the damage of the receiving tray caused by the violent impact of the free fall experimental block on the receiving tray can be prevented, the receiving tray can receive the free fall experimental block in the demonstration process, the free fall experimental block can be prevented from directly falling to the test bed or the ground, the damage of the test bed or the injury of the feet of the experimenter can be prevented, through setting up the fixing clamp, the rotary locking knob clamping plate can clamp and fix one end of the paper tape, so that the paper tape is conveniently connected with the free falling body experiment block, and the problem in the background art can be effectively solved.

In order to solve the technical problem, the utility model provides a following technical scheme:

a high school physics free fall motion demonstration device comprises a base, wherein a support column is fixedly arranged at the top of the base, a rack is fixedly arranged at the top of the support column, a driving motor is fixedly arranged at the top of the rack, the bottom of the driving motor is connected with a lead screw through a transmission shaft, the lead screw is fixedly arranged in an inner cavity of the rack through a rotating shaft, a lifting nut is sleeved outside the lead screw, two sides of the lifting nut are fixedly connected with support plates through slide bars symmetrically, a dotting timer is fixedly arranged on the front side surface of each support plate, a paper tape is inserted in the middle of the dotting timer, a fixing clamp is arranged at the bottom of the paper tape, a hanging ring is fixedly connected at the bottom of the fixing clamp through a triangular plate, a free fall experiment block is arranged at the bottom of the hanging ring, receiving boxes are symmetrically and fixedly arranged at two sides of the support column at the top of, the groove inner cavity is fixedly provided with a guide rod, the outer side of the guide rod is sleeved with a sleeve and a buffer spring, and one side of the sleeve is connected with an object receiving tray through a support rod.

Further, a spongy cushion is fixedly arranged in the inner cavity of the receiving tray.

Further, storage drawers are arranged on the front side of the base at equal intervals.

Further, the frame is of a hollow structure, and sliding grooves are symmetrically formed in the two sides of the frame in an excavating mode.

Further, the free falling body experiment block comprises a metal block, and a hook is fixedly arranged at the top of the metal block.

Further, the fixing clamp comprises a U-shaped outer frame, locking knobs are symmetrically inserted into two sides of the U-shaped outer frame, and one ends of the locking knobs penetrating through the inner cavity of the U-shaped outer frame are connected with clamping plates through rotating shafts.

The utility model discloses beneficial effect: the utility model relates to a high school physics free falling body movement demonstration device, the height adjustment of a dotting timer is convenient, the operation is convenient, through setting a driving motor, the driving motor can drive a screw rod to rotate through a transmission shaft, the screw rod can control a lifting nut to lift, and further can control a supporting plate and the dotting timer to lift, the height adjustment of the dotting timer is convenient, the buffering performance of a receiving tray can be improved through setting a guide rod and a buffering spring, the damage of the receiving tray caused by the fact that a free falling body experiment block violently impacts the receiving tray can be prevented, the receiving tray can receive the free falling body experiment block in the demonstration process, the free falling body experiment block can be prevented from directly falling onto a test table or the ground to cause the damage of the test table or the damage of feet of experimenters, through setting a fixing clamp, the free falling body locking clamp plate can be clamped and fixed by rotating a knob locking clamp plate, the paper tape is convenient to be connected with the free falling body experiment block.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a front view of the high school physics free fall motion demonstration device of the utility model.

Fig. 2 is a sectional view of the object receiving box of the high school physics free fall motion demonstration device of the utility model.

Fig. 3 is a schematic structural view of a fixing clip of the high school physics free fall motion demonstration device of the present invention.

Fig. 4 is a front view of the fixing clamp and the free fall experiment block of the high school physics free fall motion demonstration device of the utility model.

Fig. 5 is a schematic diagram of a frame structure of the high school physics free fall motion demonstration device of the present invention.

Reference numbers in the figures: 1. a base; 2. a pillar; 3. a frame; 4. a drive motor; 5. a screw rod; 6. a lifting nut; 7. a support plate; 8. a dotting timer; 9. a paper strap; 10. a fixing clip; 11. hanging a ring; 12. a free fall experimental block; 13. an article receiving box; 14. a groove; 15. a guide bar; 16. a sleeve; 17. a buffer spring; 18. a receiving tray; 19. a sponge cushion; 20. a storage drawer; 21. a chute; 22. a metal block; 23. hooking; 24. a U-shaped outer frame; 25. locking the knob; 26. and (4) clamping the plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The first embodiment is as follows:

as shown in fig. 1-5, a high school physics free fall motion demonstration device comprises a base 1, a pillar 2 is fixedly arranged on the top of the base 1, a frame 3 is fixedly arranged on the top of the pillar 2, a driving motor 4 is fixedly arranged on the top of the frame 3, the bottom of the driving motor 4 is connected with a screw 5 through a transmission shaft, the screw 5 is fixedly arranged in an inner cavity of the frame 3 through a rotating shaft, a lifting nut 6 is sleeved on the outer side of the screw 5, the driving motor 4 can drive the screw 5 to rotate through the transmission shaft, the lifting nut 6 can be controlled by the rotation of the screw 5 to lift, a supporting plate 7 and a dotting timer 8 can be controlled to lift, the height of the dotting timer 8 can be conveniently adjusted, supporting plates 7 are symmetrically and fixedly connected to two sides of the lifting nut 6 through sliding rods, the dotting timer 8 is fixedly, a paper tape 9 is inserted in the middle of the dotting timer 8, a fixing clamp 10 is arranged at the bottom of the paper tape 9, the fixing clamp 10 is arranged to facilitate the connection of the bottom of the paper tape 9 with a free fall experiment block 12, the bottom of the fixing clamp 10 is fixedly connected with a hanging ring 11 through a triangle, the bottom of the hanging ring 11 is provided with a free falling body experiment block 12, the top of the base 1 is symmetrically and fixedly provided with receiving boxes 13 at two sides of the pillar 2, the article receiving box 13 is designed to be a circular structure, grooves 14 are dug on the inner wall of the article receiving box 13 at equal intervals in the circumferential direction, a guide rod 15 is fixedly arranged in the inner cavity of the groove 14, a sleeve 16 and a buffer spring 17 are sleeved outside the guide rod 15, one side of the sleeve 16 is connected with an object receiving tray 18 through a support rod, the cushioning performance of the catch tray 18 can be improved by providing the guide rods 15 and the cushioning springs 17, the damage to the receiving tray 18 caused by the violent impact of the free fall experimental block 12 on the receiving tray 18 can be prevented.

In this embodiment, a sponge pad 19 is fixedly arranged in the inner cavity of the receiving tray 18, and the sponge pad 19 can prevent the receiving tray 18 from being damaged due to severe impact of the free fall experiment block 12 on the receiving tray 18.

In this embodiment, base 1 front side equidistance is equipped with storage drawer 20, sets up storage drawer 20 and can deposit some small-size experimental facilities.

In this embodiment, the frame 3 is a hollow structure, the sliding grooves 21 are symmetrically dug on two sides of the frame 3, and the sliding grooves 21 are arranged to guide and limit the sliding rod connected between the lifting nut 6 and the supporting plate 7.

Example two:

as shown in fig. 1 and 4, the free fall experiment block 12 includes a metal block 22, a hook 23 is fixedly disposed at the top of the metal block 22, and the hook 23 is disposed to facilitate connection of the free fall experiment block 12 and the suspension loop 11.

Example three:

as shown in fig. 3, the fixing clamp 10 includes a U-shaped outer frame 24, two sides of the U-shaped outer frame 24 are symmetrically inserted with locking knobs 25, one end of the locking knobs 25 inserted into the inner cavity of the U-shaped outer frame 24 is connected with a clamping plate 26 through a rotating shaft, and one end of the paper tape 9 can be clamped and fixed by rotating the clamping plate 26 with the locking knobs 25, so that the paper tape 9 is conveniently connected with the free fall experiment block 12.

The utility model discloses the theory of operation: the driving motor 4 can drive the lead screw 5 to rotate through the transmission shaft, the lifting nut 6 can be controlled to lift in the rotation of the lead screw 5, and then the backup pad 7 can be controlled to lift with the timer 8 of dotting, the convenience is adjusted the height of the timer 8 of dotting, the setting guide rod 15 and the buffer spring 17 can improve the buffer performance of the receiving tray 18, can prevent the free falling experimental block 12 from violently striking the receiving tray 18 and causing the receiving tray 18 to damage, the receiving tray 18 can receive the free falling experimental block 12 and can prevent the free falling experimental block 12 from directly falling to the test bench or on the ground, cause the test bench to damage or injure the experimenter's foot by smashing.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a high school physics free fall motion presentation device, includes base (1), its characterized in that: the automatic counting machine is characterized in that a support column (2) is fixedly arranged at the top of the base (1), a rack (3) is fixedly arranged at the top of the support column (2), a driving motor (4) is fixedly arranged at the top of the rack (3), the bottom of the driving motor (4) is connected with a lead screw (5) through a transmission shaft, the lead screw (5) is fixedly arranged in an inner cavity of the rack (3) through a rotating shaft, a lifting nut (6) is sleeved outside the lead screw (5), two sides of the lifting nut (6) are symmetrically and fixedly connected with supporting plates (7) through sliding rods, a counting timer (8) is fixedly arranged on the front side surface of the supporting plates (7), a paper tape (9) is arranged in the middle of the counting timer (8) in an alternating mode, a fixing clamp (10) is arranged at the bottom of the paper tape (9), a hanging ring (11) is fixedly connected with the bottom of, base (1) top is located that pillar (2) bilateral symmetry is fixed to be equipped with connects thing box (13), just connect thing box (13) to establish to circular structure, connect thing box (13) inner wall circumference equidistance to dig and be equipped with recess (14), recess (14) inner chamber is fixed and is equipped with guide bar (15), guide bar (15) outside cover is equipped with sleeve (16) and buffer spring (17), sleeve (16) one side is connected with through branch and connects thing tray (18).

2. The high school physical free-fall motion demonstration apparatus according to claim 1 wherein: a spongy cushion (19) is fixedly arranged in the inner cavity of the receiving tray (18).

3. The high school physical free-fall motion demonstration apparatus according to claim 1 wherein: the storage drawers (20) are arranged on the front side of the base (1) at equal intervals.

4. The high school physical free-fall motion demonstration apparatus according to claim 1 wherein: the frame (3) is of a hollow structure, and sliding grooves (21) are symmetrically arranged on two sides of the frame (3).

5. The high school physical free-fall motion demonstration apparatus according to claim 1 wherein: the free falling body experiment block (12) comprises a metal block (22), and a hook (23) is fixedly arranged at the top of the metal block (22).

6. The high school physical free-fall motion demonstration apparatus according to claim 1 wherein: the fixing clamp (10) comprises a U-shaped outer frame (24), locking knobs (25) are symmetrically inserted into two sides of the U-shaped outer frame (24), and one ends, penetrating through the inner cavity of the U-shaped outer frame (24), of the locking knobs (25) are connected with clamping plates (26) through rotating shafts.