CN204229706U - The apparatus for demonstrating of the paraboloid of revolution - Google Patents

Abstract

Demonstration setup for a paraboloid of revolution. The composition of this product includes: chassis, the chassis has a round hole, a group of jacks are opened on the chassis around the round hole, the round hole is connected to the bearing, the outer ring of the bearing is opened with a socket hole, and the hole U-shaped positioning parts are interposed, the inner ring of the bearing is connected to the rotating shaft, and the top of the rotating shaft is connected to three struts. The angle between the struts is 120°. The upper part is connected with a set of upper telescopic struts around the circumference, and the lower part connected with the rotating shaft is connected with a set of lower telescopic struts around the circumference. The slots are connected to the horizontal T-shaped inserts, and the horizontal T-shaped inserts are connected by arc-shaped support plates, and the arc-shaped support plates are connected to a group of magnetic sheets, and the magnetic sheets are attracted to the outer arc-shaped plate. The utility model is used for demonstration of a rotating paraboloid.

Description

Demonstration setup for a paraboloid of revolution

Technical field:

The utility model relates to a demonstration device for a rotating paraboloid.

Background technique:

Paraboloid is a relatively abstract concept. It takes a lot of effort for teachers to explain it. It is not easy for students to understand and even more difficult to master. If there are physical teaching aids for demonstration, students should be able to understand and master it easily, and it can also reduce the difficulty of teachers' explanations.

Invention content:

The purpose of the utility model is to provide a demonstration device of a rotating paraboloid that forms a paraboloid between the outer arc-shaped plates by rotating the rotating shaft.

Above-mentioned purpose realizes by following technical scheme:

A demonstration device of a rotating paraboloid, which consists of: a chassis, the chassis is opened with a round hole, and a group of sockets are opened on the chassis around the periphery of the round hole, and the round hole is connected to the bearing , the outer ring of the bearing has an insertion hole, and a U-shaped positioning piece is inserted between the insertion hole and the insertion hole, the inner ring of the bearing is connected to the rotating shaft, and the rotating shaft The top is connected with three poles, the angle between the poles is 120°, the poles are all connected to the ring, the ring is connected to the hand push rod, and the upper part of the rotating shaft is connected to a circle around the circumference. A set of upper telescopic struts, the lower part connected by the rotating shaft is connected with a group of lower telescopic struts around the circumference, and the ends of the upper telescopic struts and the lower telescopic struts are both provided with horizontal T-shaped slots, The horizontal T-shaped slots are connected to the horizontal T-shaped plugs, and the horizontal T-shaped plugs are connected by arc-shaped support plates, and the arc-shaped support plates are connected to a set of magnetic sheets, and the magnetic sheets Suction the outer curved plate.

The demonstration device of the rotating paraboloid, the upper telescopic support rod and the lower telescopic support rod both include a hollow round rod, one end of the hollow round rod is connected to the rotating shaft, and the hollow round rod The other end of the rod is inserted with a round rod, the hollow rod has a square hole, and the round rod has a set of square sockets, and the interference fit between the square hole and the square socket is inserted into the inverted U-shaped insert positioning.

The demonstration device of the rotating paraboloid, the arc-shaped support plate and the lower part of the outer arc-shaped plate are arc-shaped plates, and the arc-shaped support plate and the upper part of the outer arc-shaped plate are oblique plate, the arc-shaped plate is connected to the inclined plate.

Beneficial effect:

1. The U-shaped positioning part adopted by the utility model can fix the outer ring of the bearing and the chassis into an integrated structure, which facilitates the rotation of the rotating shaft, saves labor, and has a fast rotation speed.

2. The upper telescopic pole and the lower telescopic pole of the utility model can be lengthened and shortened as required, and are flexible and convenient to use.

3. The arc-shaped support plate of the utility model attracts the outer arc-shaped plate through the magnetic sheet, which has a simple structure and firm connection. The centrifugal force generated when the rotating shaft rotates rapidly will not make the outer arc-shaped plate fall off, so it is safe and stable to use.

4. The shape of the arc-shaped support plate and the outer arc-shaped plate used in the utility model basically coincides with the structural shape of the paraboloid, and the demonstration effect is real, which reduces the difficulty of explanation for teachers and makes it easier for students to understand.

Description of drawings:

Accompanying drawing 1 is the structural representation of this product.

Detailed ways:

Example 1:

A demonstration device of a rotating paraboloid, which consists of: a chassis 1, the chassis has a circular hole 2, and a group of sockets 3 are opened on the chassis around the periphery of the circular hole. The hole is connected to the bearing. The outer ring 4 of the bearing has an insertion hole 5. A U-shaped positioning piece 6 is inserted between the insertion hole and the insertion hole. The inner ring 7 of the bearing is connected Revolving shaft 8, the top of the revolving shaft is connected with three struts 9, the angle between the struts is 120°, the struts are all connected to the ring 20, and the ring is connected to the hand push rod 21 , the upper part of the rotating shaft is connected to a set of upper telescopic struts around the circumference, and the lower part connected to the rotating shaft is connected to a set of lower telescopic struts around the circumference, and the upper telescopic struts and the lower telescopic struts are Both ends are provided with horizontal T-shaped slots 10, and the horizontal T-shaped slots are connected with horizontal T-shaped plugs 11, and the horizontal T-shaped plugs are connected by arc-shaped support plates 12, and the arc-shaped A set of magnetic sheets 13 are connected to the shaped support plate, and the magnetic sheets attract the outer arc-shaped plate 14 .

The horizontal T-shaped slot is used in conjunction with the horizontal T-shaped insert block, so that the connection between the upper telescopic strut, the lower telescopic strut and the curved support plate is tight, and it is convenient to disassemble and assemble.

Example 2:

In the demonstration device of a rotating paraboloid described in Embodiment 1, both the upper telescopic strut and the lower telescopic strut include a hollow round rod 15, one end of the hollow round rod is connected to the rotating shaft, and the The other end of the hollow round rod is inserted with a round bar 16, the hollow round bar has a square hole 17, and the round bar has a group of square jacks 18, and the square hole and the square jack The inverted U-shaped insert 19 is positioned between the interference fit inserts.

Example 3:

In the demonstration device of a rotating paraboloid described in Embodiment 2, the lower part of the arc-shaped support plate and the outer arc-shaped plate is an arc-shaped plate, and the arc-shaped support plate and the outer arc-shaped plate The upper part is a sloping plate, and the arc-shaped plate is connected to the sloping plate.

Claims (3)

1. A demonstration device of a rotating paraboloid, which consists of: a chassis, characterized in that: the chassis is provided with a circular hole, and a group of jacks are provided on the chassis on the periphery of the circular hole, and the The above round hole is connected to the bearing, the outer ring of the bearing has an insertion hole, a U-shaped positioning piece is inserted between the insertion hole and the insertion hole, and the inner ring of the bearing is connected to the rotating shaft , the top of the rotating shaft is connected with three poles, the angle between the poles is 120°, the poles are all connected to the ring, the ring is connected to the hand push rod, the rotating shaft The upper part of the shaft is connected to a set of upper telescopic struts around the circumference, and the lower part connected to the rotating shaft is connected to a set of lower telescopic struts around the circumference. Both the ends of the upper telescopic struts and the lower telescopic struts Horizontal T-shaped slots, the horizontal T-shaped slots are connected with horizontal T-shaped plugs, and the horizontal T-shaped plugs are connected by arc-shaped support plates, and the arc-shaped support plates are connected with a set of magnetic sheets , the magnetic sheet attracts the outer arc-shaped plate. 2. The demonstration device of a rotating paraboloid according to claim 1, wherein said upper telescopic strut and said lower telescopic strut both comprise a hollow round rod, and one end of said hollow round rod is connected to the The rotating shaft, the other end of the hollow rod is inserted with a round rod, the hollow rod has a square hole, and the round rod has a set of square sockets, the square hole and the An interference fit between the square jacks is inserted into the inverted U-shaped insert for positioning. 3. The demonstration device of a rotating paraboloid according to claim 2, characterized in that: the bottom of the arc-shaped support plate and the outer arc-shaped plate is an arc-shaped plate, and the arc-shaped support plate and the arc-shaped support plate are The upper part of the outer arc-shaped plate is a slant plate, and the arc-shaped plate is connected to the slant plate.