CN205247723U - Overweight weightless demonstration appearance - Google Patents

Abstract

The utility model discloses an overweight and weightless demonstration instrument, which comprises a box body, a handle, a weight A, a switch, a display, a pressure tester, a weight B, a tray, a nylon rope, a spring, a support rod, a fixed pulley, a cantilever, and a storage battery. , an electromagnet and a chute; the inside of the box is provided with a spring, a storage battery and an electromagnet, the front of the box is provided with a display and a switch, and the side of the box is provided with a chute; the tray is provided with a weight B and a pressure test instrument; the tray is connected with a weight A through a nylon wire; a handle is provided on the side of the weight A; the support rod is arranged on the box; the support rod is provided with a cantilever; There is a fixed pulley; the quality of the weight A is greater than that of the pallet (the quality of the pallet includes the weight B, the pressure tester and its own quality); the utility model has reasonable structure, convenient use and low cost, and can enable teachers to When teaching the principles of weightlessness and overweight, demonstrate it to students directly and clearly.

Description

A kind of ultra-gravity and weightlessness demonstrator

technical field

The utility model relates to a demonstration teaching aid for physics teaching, in particular to an overweight and weightlessness demonstration instrument.

Background technique

Weightlessness and overweight are tested by precision instruments in the real world. Due to the accuracy required, the equipment is relatively complicated and the operation is also very cumbersome; buying and using the above instruments for the purpose of teaching in schools will require a lot of expenses, so When teaching weightlessness and overweight to students in the classroom, they basically use language to teach, making it difficult for students to understand the specific and direct experience of weightlessness and overweight from reality.

Utility model content

The purpose of this utility model is to provide an overweight and weightlessness demonstrator to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

An overweight and weightless demonstration instrument, including a box body, a handle, a weight A, a switch, a display, a pressure tester, a weight B, a tray, a nylon rope, a spring, a support rod, a fixed pulley, a cantilever, a battery, an electromagnet and a slide groove; the inside of the box is provided with springs, accumulators and electromagnets, the front of the box is provided with displays and switches, and the side of the box is provided with a chute; the spring is located on the left side of the top surface of the box; the accumulator and electromagnet The iron is located on the right side of the top surface of the box; the electromagnet is located on the right side of the storage battery; the tray is provided with a weight B and a pressure tester; the tray is connected with a weight A through a nylon wire; the weight A side is provided with a handle; the support bar is provided on the box body; a cantilever is provided on the support bar; a fixed pulley is provided at both ends of the cantilever.

As a further solution of the utility model: there is a through hole in the center of the electromagnet.

As a further solution of the utility model: the surface of the tail of the handle is a rough surface.

As a further solution of the utility model: the diameter of the tail of the handle is 1-2 cm larger than the width of the chute.

As a further solution of the utility model: the mass of the weight A is 100g heavier than the mass of the pallet.

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

The utility model has the advantages of reasonable structure, convenient use and low manufacturing cost, and enables teachers to demonstrate the principles of weightlessness and overweight to students directly and clearly when teaching the principles of weightlessness and overweight in the classroom, so that students can understand weightlessness and overweight more easily.

Description of drawings

Figure 1 is a schematic diagram of the structure of the ultra-gravity and weightlessness demonstrator.

Fig. 2 is the right view of the box in the ultra-gravity and weightlessness demonstrator.

Fig. 3 is a structural schematic diagram of the handle in the ultra-gravity and weightlessness demonstrator.

Fig. 4 is a top view of the electromagnet in the ultra-gravity and weightlessness demonstration instrument.

In the figure: 1-box, 2-handle, 3-weight A, 4-switch, 5-display, 6-pressure tester, 7-weight B, 8-tray, 9-nylon rope, 10-spring , 11-support rod, 12-fixed pulley, 13-cantilever, 14-battery, 15-electromagnet, 16-chute.

detailed description

The technical solution of this patent will be described in further detail below in conjunction with specific embodiments.

Please refer to Figure 1-4, an overweight and weightlessness demonstration instrument, including a box body 1, a handle 2, a weight A3, a switch 4, a display 5, a pressure tester 6, a weight B7, a tray 8, a nylon rope 9, and a spring 10 , support bar 11, fixed pulley 12, cantilever 13, accumulator 14, electromagnet 15 and chute 16; Described casing 1 interior is provided with spring 10, accumulator 14 and electromagnet 15, and casing 1 front is provided with display 5 and Switch 4, a chute 16 is provided on the side of the box body 1, and the display 5 is used to display the pressure change of the weight B7 during movement. The switch 4 controls the power on and off of the electromagnet 15; the pallet 8 is provided with a weight B7 and pressure tester 6; described tray 8 is connected with weight A3 by nylon wire 9; The side of described weight A3 is provided with a handle 2, and handle 2 can move freely in chute 13; Described support bar 11 is located at On the casing 1; the support bar 11 is provided with a cantilever 13; a fixed pulley 12 is respectively provided at both ends of the cantilever 13; the quality of the weight A3 is greater than the quality of the pallet 8 (the quality of the pallet 8 includes the weight B7 , pressure tester 6 and its own quality).

The working principle of the utility model is: press the switch 4, the electromagnet 15 is energized, the weight A3 will be moved on the electromagnet 15 through the handle 2, after the weight A3 is fixed, the switch 4 is turned off, and the electromagnet 15 The power is cut off, the magnetism is lost, and the weight A3 falls under the action of pressure. At this time, because the mass of the weight A3 is greater than the mass of the tray 8, the tray 8 will accelerate to rise at this time, and when the tray 8 touches the spring 10, it will start to slow down. , observe the pressure change of the weight B7 in this process through the monitor 5.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation, and within the knowledge of those of ordinary skill in the art, it can also be made without departing from the purpose of this patent. Variations.

Claims (5)

1. a Demonstrator of Overweight and Zero Gravity, comprises casing, handle, pouring weight A, switch, display, pressure tester, pouring weight B, pallet, nylon rope, spring, support bar, fixed pulley, cantilever, battery, electromagnet and chute; It is characterized in that, described box house is provided with spring, battery and electromagnet, and casing front is provided with display and switch, and casing side is provided with a chute; Described spring is positioned at the left side of box top; Described battery and electromagnet are positioned at the right side of box top; Described electromagnet is positioned at the right side of battery; In described pallet, be provided with pouring weight B and pressure tester; Described pallet is connected with pouring weight A by nylon wire; Described pouring weight A side is provided with leader; Described support bar is located on casing; Described support bar is provided with cantilever; Described cantilever two ends are respectively provided with a fixed pulley.

2. Demonstrator of Overweight and Zero Gravity according to claim 1, is characterized in that, there is a through hole at described electromagnet center.

3. Demonstrator of Overweight and Zero Gravity according to claim 1, is characterized in that, described handle tail surface is matsurface.

4. Demonstrator of Overweight and Zero Gravity according to claim 1, is characterized in that, the diameter of described handle afterbody is beaten 1-2cm than the width of chute.

5. Demonstrator of Overweight and Zero Gravity according to claim 1, is characterized in that, the quality of described pouring weight A is than the heavy 100g of the quality of pallet.