Archimedes principle experiment demonstration device

Abstract

The utility model provides an Archimedes principle experiment demonstration device, and relates to the technical field of Archimedes principle experiments. The experimental device is used for solving the technical problems that water needs to be added from the outside frequently when repeated continuous experiments are carried out by an existing experimental device, operation is troublesome, and water is prone to spilling and leaking when being added. The Archimedes principle experiment demonstration device comprises a bottom plate, a back plate is installed on the rear side of the bottom plate, light shielding plates are installed on the two sides of the bottom plate, a guide pipe is installed on the bottom plate, a first dynamometer is arranged in the guide pipe in a sliding mode, and a first elastic piece used for pushing the first dynamometer to slide and reset is arranged in the guide pipe. By pressing the connecting plate downwards, the connecting plate drives the pressing plate to slide downwards along the guide rod, the pressing plate enables the liquid conveying rod to rotate in the flow guide pipe through rolling of the ball, the liquid conveying rod conveys water in the water storage tank into the water overflowing cup through the flow guide pipe, the effect of supplementing water to the water overflowing cup is achieved, and the water is not prone to spilling and leaking.

Description

Technical Field

[0001] The utility model provides an Archimedes principle experiment demonstration device, which relates to the technical field of Archimedes principle experiments. Background Art

[0002] Archimedes' principle is a key principle in fluid statics. It states that an object immersed in a stationary fluid experiences a buoyant force equal to the weight of the fluid displaced by the object, directed vertically upward and passing through the centroid of the displaced fluid. This conclusion, first proposed by Archimedes, is known as the Archimedes principle. It also holds true for objects partially immersed in a liquid. The same conclusion can also be extended to gases.

[0003] Patent authorization announcement number CN210223215U discloses an experimental device for studying Archimedes' principle. This patent uses a lifting module to control the height of a weight to control the volume of liquid discharged and the depth of the weight in the liquid. The gravity to be measured is decomposed into two instruments for simultaneous measurement, which can avoid taking down the spring dynamometer for measurement multiple times. The conclusion is drawn by simultaneously measuring the readings of the two force sensors. However, the experimental device provided by this patent still has shortcomings during actual use. When conducting multiple consecutive experiments, the experimental device needs to frequently add water from the outside, which is cumbersome to operate. The water is also prone to spillage during addition, making the ground in the device area slippery and prone to slipping and injury.

[0004] Therefore, it is necessary to provide an Archimedes principle experimental demonstration device that is convenient for adding water and is not easy to leak. Utility Model Content

[0005] In order to overcome the shortcomings of the experimental device provided by the existing patent that water needs to be frequently added from the outside when conducting multiple consecutive experiments, the operation is relatively troublesome, and the water is easily spilled when added, the utility model provides an Archimedes principle experimental demonstration device that is easy to add water and not easy to spill.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides the following technical solutions: an Archimedes principle experiment demonstration device, comprising a bottom plate, a back plate, a shading plate, a guide tube, a hand wheel, a screw, a first dynamometer, a weight, a first elastic member, a mounting seat, a support frame, an overflow cup, a second dynamometer and a water cup, a back plate is mounted on the rear side of the bottom plate, shading plates are mounted on both sides of the bottom plate, a guide tube is mounted on the bottom plate, a first dynamometer is slidably arranged in the guide tube, and a second dynamometer for pushing the first dynamometer to slide and reset is arranged in the guide tube. An elastic member, a screw is threadedly provided on the guide tube, a handwheel is fixedly connected to the screw, a weight to be measured is hung on the first dynamometer, a mounting seat is installed on the bottom plate, a support frame is installed on the mounting seat, an overflow cup is placed on the support frame, a second dynamometer is installed on the mounting seat, a water cup is placed on the second dynamometer, the first dynamometer and the second dynamometer are both electrically connected to the display on the back plate, and also include a water tank and a water supply component for replenishing water into the overflow cup, a water tank is installed on the bottom plate, and a water supply component is provided on the water tank.

[0007] In one embodiment, the water delivery assembly includes a guide tube, a pressure plate, a ball bearing, an infusion rod, a guide rod, a second elastic member and a connecting plate. The guide tube is connected to and communicated with the water tank, and the guide tube extends to just above the overflow cup. The infusion rod is rotatably arranged in the guide tube, a pressure plate is slidably arranged on the infusion rod, and a ball bearing is rollingly arranged between the pressure plate and the infusion rod. A guide rod is fixedly connected to the bottom plate, and a connecting plate is slidably arranged on the guide rod. A second elastic member is wound around the guide rod for pushing the connecting plate to slide and reset, and the connecting plate is fixedly connected to the pressure plate.

[0008] In one embodiment, the second dynamometer is provided with a groove for placing a water cup.

[0009] In one embodiment, the bottom of the water storage tank is inclined downward toward a side close to the flow guide pipe.

[0010] In one embodiment, it also includes guide plates installed on both sides of the back panel, a fixed plate is slidingly arranged between the two guide plates, the fixed plate is fixedly connected to the connecting plate, and a cleaning block for cleaning the back panel and the display screen is installed on the fixed plate.

[0011] In one embodiment, the invention further comprises two connecting rods slidably arranged on the support frame, one end of the two connecting rods close to each other is fixedly connected to a clamping plate, and a third elastic member is wound around the connecting rods to push the two clamping plates closer to each other.

[0012] In one embodiment, a telescopic tube is fixedly connected between the guide rod and the connecting plate, and the telescopic tube is sleeved outside the second elastic member.

[0013] In one embodiment, a protective shell is slidably provided at the water inlet of the water tank.

[0014] In one embodiment, the water cup is covered with a protective shield in a sliding manner.

[0015] Compared with the prior art, the Archimedes principle experimental demonstration device provided by the embodiment of the present invention has the following advantages: 1. By pressing the connecting plate downward, the connecting plate drives the pressure plate to slide downward along the guide rod. The pressure plate rotates the infusion rod in the guide tube through the rolling of the ball. The infusion rod transports the water in the water tank to the overflow cup through the guide tube, thereby achieving the effect of replenishing the overflow cup with water and preventing water from leaking.

[0016] 2. The connecting plate slides up and down along the guide rod to drive the fixed plate to slide up and down along the two guide plates, so that the cleaning block wipes the display screen on the back plate to achieve the effect of cleaning the back plate and the display screen.

[0017] 3. Push the two clamping plates through the third elastic members on both sides so that the two clamping plates slide toward each other on the support frame through the connecting rod, clamping the overflow cup to achieve the effect of fixing the overflow cup and preventing the overflow cup from being knocked over when the heavy object swings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic three-dimensional cross-sectional structure diagram of the bottom plate, back plate and sunshade of the utility model.

[0020] Figure 3 It is a schematic three-dimensional cross-sectional structure diagram of the mounting base, support frame and overflow cup of the utility model.

[0021] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the infusion pole of the utility model.

[0022] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the guide plate, fixed plate and cleaning block of the utility model.

[0024] Figure 7 It is a schematic three-dimensional cross-sectional structure diagram of the mounting seat, clamping plate and connecting rod of the utility model.

[0025] Figure 8 For this utility model Figure 7 Enlarged view of point B in the middle.

[0026] Markings in the figure are: 1-base plate, 2-back plate, 3-shading plate, 4-guide tube, 5-handwheel, 6-screw, 7-first dynamometer, 8-weight, 9-first elastic member, 10-mounting seat, 11-support frame, 12-overflow cup, 13-second dynamometer, 14-water cup, 15-water storage tank, 16-guide tube, 1601-pressure plate, 1602-ball, 17-infusion rod, 18-guide plate, 19-fixing plate, 20-cleaning block, 21-guide rod, 22-second elastic member, 2201-connecting plate, 23-clamping plate, 24-connecting rod, 25-third elastic member, 26-telescopic tube, 27-protective shell, 28-protective cover. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0028] Example 1: An Archimedes principle experimental demonstration device, see Figures 1-6 As shown, it includes a base plate 1, a back plate 2, a shading plate 3, a guide tube 4, a handwheel 5, a screw 6, a first dynamometer 7, a weight 8, a first elastic member 9, a mounting seat 10, a support frame 11, an overflow cup 12, a second dynamometer 13 and a water cup 14. The back plate 2 is installed on the rear side of the base plate 1 by bolt connection. A display screen is provided on the back plate 2. Shading plates 3 are installed on both sides of the base plate 1 by bolt connection. The guide tube 4 is installed on the base plate 1 by bolt connection. A first tension-type dynamometer 7 is slidingly provided in the guide tube 4. The first dynamometer 7 slides up and down along the guide tube 4. A first elastic member 9 for pushing the first dynamometer 7 to slide upward and reset is provided in the guide tube 4. A screw 6 is threadedly provided on the guide tube 4. The top of the screw 6 is fixedly connected to the handwheel 5 by welding. The first dynamometer A weight 8 to be measured is hung at the bottom of 7, a mounting base 10 is installed on the bottom plate 1 by means of bolts, a support frame 11 is installed on the mounting base 10 by means of bolts, an overflow cup 12 is placed on the support frame 11, a second pressure-type dynamometer 13 is installed on the mounting base 10 by means of bolts, a water cup 14 is placed on the second dynamometer 13, a groove for placing the water cup 14 is provided on the second dynamometer 13, which is convenient for quickly positioning it to the water receiving position so that the water cup 14 can catch the water flowing out of the overflow cup 12 after being placed, the first dynamometer 7 and the second dynamometer 13 are both electrically connected to the display on the back plate 2, and also include a water tank 15 and a water supply component for replenishing water into the overflow cup 12, the water tank 15 is installed on the bottom plate 1 by means of bolts, and the water supply component is provided on the water tank 15.

[0029] See Figure 3-Figure 6As shown, the water delivery assembly includes a guide tube 16, a pressure plate 1601, a ball 1602, an infusion rod 17, a guide rod 21, a second elastic member 22 and a connecting plate 2201. The water storage tank 15 is connected and communicated with the guide tube 16. The bottom of the water storage tank 15 is tilted downward toward the side close to the guide tube 16 to facilitate the water in the water storage tank 15 to flow out through the guide tube 16. The guide tube 16 extends to just above the overflow cup 12. The infusion rod 17 is rotatably provided in the guide tube 16. 7. A pressure plate 1601 is slidably provided on the infusion rod 17, and a ball bearing 1602 is rollingly provided between the pressure plate 1601 and the infusion rod 17. A guide rod 21 is fixedly connected to the base plate 1 by bolt connection. A connecting plate 2201 is slidably provided on the guide rod 21. A second elastic member 22 is wound around the guide rod 21 for pushing the connecting plate 2201 to slide upward and reset. The connecting plate 2201 and the pressure plate 1601 are fixedly connected by welding.

[0030] When an experiment is needed, the weight 8 to be measured is first hung on the first dynamometer 7. At this time, the first dynamometer 7 displays the pulling weight of the weight 8 through the display screen on the back plate 2. Then, by turning the hand wheel 5, the screw 6 pushes the first dynamometer 7 to slide downward along the guide tube 4. At this time, the first elastic member 9 is compressed and deformed by the force. As the first dynamometer 7 drives the weight 8 to descend into the overflow cup 12, the weight 8 will occupy the space of the water in the overflow cup 12, and then displace the water into the water cup 14. When the weight 8 no longer changes position with the descent of the first dynamometer 7, the gravity data measured by the first dynamometer 7 is the buoyancy of the weight 8, and is displayed on the display screen on the back plate 2. After the measurement is completed, the hand wheel 5 is turned in the opposite direction to make the screw 6 move upward. At this time, the first elastic member 9 loses the force and returns to its original state, thereby pushing the first elastic member 9 to return to its original state. A dynamometer 7 drives the weight 8 to slide upward along the guide tube 4 and reset, so that the weight 8 is separated from the water in the overflow cup 12; before conducting the next experiment, the connecting plate 2201 is pressed downward so that the connecting plate 2201 drives the pressure plate 1601 to slide downward along the guide rod 21. At this time, the second elastic member 22 is compressed and deformed by the force, and the pressure plate 1601 causes the infusion rod 17 to rotate in the guide tube 16 through the rolling of the ball 1602. The infusion rod 17 transports the water in the water tank 15 to the overflow cup 12 through the guide tube 16 to replenish the overflow cup 12. When the connecting plate 2201 is released, the second elastic member 22 loses the force and returns to its original state, thereby pushing the connecting plate 2201 to drive the pressure plate 1601 to slide upward along the guide rod 21 and reset. At this time, the infusion rod 17 rotates in the opposite direction due to the rising of the pressure plate 1601 and the rolling of the ball 1602.

[0031] Example 2: Based on Example 1, refer to Figure 6As shown, it also includes guide plates 18 installed on both sides of the back panel 2 by means of bolt connection, and a fixed plate 19 is slidingly arranged between the two guide plates 18. The fixed plate 19 is fixedly connected to the connecting plate 2201 by means of bolt connection, and a cleaning block 20 for cleaning the back panel 2 and the display screen is installed on the fixed plate 19 by means of gluing.

[0032] When the connecting plate 2201 slides up and down along the guide rod 21 , the connecting plate 2201 drives the fixing plate 19 to slide up and down along the two guide plates 18 , so that the cleaning block 20 wipes and cleans the back plate 2 and the display screen.

[0033] See Figure 7 and Figure 8 As shown, it also includes two symmetrical connecting rods 24 arranged on the support frame 11 in a transverse sliding manner. The ends of the two connecting rods 24 close to each other are fixedly connected to the clamping plates 23 by welding. A third elastic member 25 is wound around the connecting rods 24 to push the two clamping plates 23 closer to each other.

[0034] When the weight 8 moves downward with the first dynamometer 7, the weight 8 is likely to swing and collide with the overflow cup 12, which can easily cause the overflow cup 12 to fall over. Therefore, when the overflow cup 12 is placed, the two clamping plates 23 are pushed by the third elastic members 25 on both sides, so that the two clamping plates 23 slide toward each other on the support frame 11 through the connecting rod 24, clamping the overflow cup 12 and fixing it. When the weight 8 swings, the overflow cup 12 cannot be knocked over.

[0035] See Figure 1 and Figure 6 As shown, a telescopic tube 26 is fixedly connected between the guide rod 21 and the connecting plate 2201 by riveting. The telescopic tube 26 is sleeved on the outside of the second elastic member 22. A protective shell 27 is slidably provided at the water inlet of the water tank 15, and a protective cover 28 is slidably covered on the water cup 14.

[0036] The telescopic tube 26 is extended and retracted as the connecting plate 2201 slides up and down. The telescopic tube 26 is used to protect the second elastic member 22 to prevent the second elastic member 22 from rusting and losing its elasticity due to long-term exposure. The protective shell 27 is used to prevent foreign matter from falling into the water tank 15 to avoid clogging the guide tube 16. When the water cup 14 is not in use, the protective cover 28 can protect the water cup 14 from dust.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An Archimedes principle experimental demonstration device, comprising a bottom plate (1), a back plate (2), a shading plate (3), a guide tube (4), a hand wheel (5), a screw rod (6), a first dynamometer (7), a weight (8), a first elastic member (9), a mounting seat (10), a support frame (11), an overflow cup (12), a second dynamometer (13) and a water cup (14), wherein the back plate (2) is mounted on the rear side of the bottom plate (1), the shading plates (3) are mounted on both sides of the bottom plate (1), the guide tube (4) is mounted on the bottom plate (1), the first dynamometer (7) is slidably mounted in the guide tube (4), and a guide tube (4) is mounted in the guide tube (4) for pushing the first dynamometer (7) to move the first dynamometer. A first elastic member (9) for sliding and resetting the dynamometer (7), a screw rod (6) is threadedly arranged on the guide tube (4), a hand wheel (5) is fixedly connected to the screw rod (6), a weight (8) to be measured is suspended on the first dynamometer (7), a mounting seat (10) is mounted on the bottom plate (1), a support frame (11) is mounted on the mounting seat (10), an overflow cup (12) is placed on the support frame (11), a second dynamometer (13) is mounted on the mounting seat (10), a water cup (14) is placed on the second dynamometer (13), the first dynamometer (7) and the second dynamometer (13) are both electrically connected to a display on the back plate (2), and are characterized in that: It also comprises a water storage tank (15) and a water delivery assembly for replenishing water into the overflow cup (12); the water storage tank (15) is installed on the bottom plate (1), and the water delivery assembly is arranged on the water storage tank (15).

2. The Archimedes principle experimental demonstration device according to claim 1, characterized in that: The water delivery assembly comprises a flow guide pipe (16), a pressure plate (1601), a ball (1602), an infusion rod (17), a guide rod (21), a second elastic member (22) and a connecting plate (2201); the flow guide pipe (16) is connected to and communicates with the water storage tank (15); the flow guide pipe (16) extends to the top of the overflow cup (12); the infusion rod (17) is rotatably arranged in the flow guide pipe (16); and the infusion rod (17) is slidably arranged. A pressing plate (1601) is provided with a ball (1602) in a rolling manner between the pressing plate (1601) and the infusion rod (17); a guide rod (21) is fixedly connected to the bottom plate (1); a connecting plate (2201) is slidably provided on the guide rod (21); a second elastic member (22) for pushing the connecting plate (2201) to slide and reset is wound around the guide rod (21); and the connecting plate (2201) is fixedly connected to the pressing plate (1601).

3. The Archimedes principle experimental demonstration device according to claim 1, characterized in that: The second dynamometer (13) is provided with a groove for placing the water cup (14).

4. The Archimedes principle experimental demonstration device according to claim 2, characterized in that: The bottom of the water storage tank (15) is inclined downward toward a side close to the flow guide pipe (16).

5. The Archimedes principle experimental demonstration device according to claim 2, characterized in that: It also includes guide plates (18) installed on both sides of the back plate (2), a fixed plate (19) is slidably arranged between the two guide plates (18), the fixed plate (19) is fixedly connected to the connecting plate (2201), and a cleaning block (20) for cleaning the back plate (2) and the display screen is installed on the fixed plate (19).

6. The Archimedes principle experimental demonstration device according to claim 1, characterized in that: It also includes two connecting rods (24) slidably arranged on the support frame (11), one end of the two connecting rods (24) close to each other is fixedly connected to a clamping plate (23), and a third elastic member (25) is wound around the connecting rods (24) to push the two clamping plates (23) close to each other.

7. The Archimedes principle experimental demonstration device according to claim 2, characterized in that: A telescopic tube (26) is fixedly connected between the guide rod (21) and the connecting plate (2201), and the telescopic tube (26) is sleeved outside the second elastic member (22).

8. The Archimedes principle experimental demonstration device according to claim 1, characterized in that: A protective shell (27) is slidably provided at the water inlet of the water storage tank (15).

9. The Archimedes principle experimental demonstration device according to claim 1, characterized in that: The water cup (14) is slidably covered with a protective cover (28).

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