CN210123617U

CN210123617U - Demonstration device for object horizontal adjustment

Info

Publication number: CN210123617U
Application number: CN201920106355.7U
Authority: CN
Inventors: 许芮萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-03-03
Anticipated expiration: 2029-01-23

Abstract

The utility model discloses a presentation device for object level (l) ing, including support frame and demonstration pole, the crossbeam middle part fixedly connected with dead lever of support frame, the lower extreme of dead lever articulates there is the connecting block, and the spout has been seted up to the upper surface of demonstration pole, and the lower extreme of connecting block slides in the spout, and the equal sliding connection of lower surface left end and the right-hand member of demonstration pole has the balancing weight, demonstrates the preceding lateral wall fixedly connected with scale of pole, the utility model discloses compare in current presentation device more nimble, not only can change the mounted position of balancing weight, can also change the position of fulcrum, make mr in the middle of the teaching this teaching aid of use that can be more convenient to still installed the device to the fulcrum position locking additional, can not receive the gravity influence to lead to the device.

Description

Demonstration device for object horizontal adjustment

Technical Field

The utility model relates to a physics experimental apparatus field of relevance, specific presentation device for object level control that says so.

Background

Lever principle wide application in each field, lever principle also is the important knowledge point in the physics study outline of middle school, many teachers in order to make this knowledge point of better study of student, can use the level adjustment presentation device of some lever principles when having a lesson, utilize presentation device to make the student audio-visual study knowledge point, current presentation device is "seesaw" formula structure, lever central point position can not adjust promptly, can only change the position of balancing weight, the teaching is not nimble enough, in view of this, we propose the utility model discloses a teaching is provided with a help or increased vigilance.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims at providing a demonstration device for object level adjustment.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a presentation device for object level (l) ing, includes support frame and demonstration pole, the crossbeam middle part fixedly connected with dead lever of support frame, the lower extreme of dead lever articulates there is the connecting block, the spout has been seted up to the upper surface of demonstration pole, the lower extreme of connecting block slides in the spout, the equal sliding connection of lower surface left end and the right-hand member of demonstration pole has the balancing weight, the preceding lateral wall fixedly connected with scale of demonstration pole.

Furthermore, the right side wall of the connecting block is fixedly connected with a sliding plate, the lower surface of the sliding plate is connected with the upper surface of the demonstration rod in a sliding mode, and the lower surface of the sliding plate is fixedly connected with a sliding block.

Further, the slide is from last to running through threaded rod down, the threaded rod rotates with the slide to be connected, the upper end fixedly connected with carousel of threaded rod, the lateral wall lower extreme spiro union of threaded rod has the slider, the slider slides in the spout.

Further, the inner cavity upper surface of spout and the upper surface of slider have seted up inclined plane and chamfer face respectively, inclined plane and chamfer face laminate mutually.

Furthermore, the left end and the right end integrated into one piece of demonstration pole have a carrier block, the lower surface sliding connection of carrier block has the hanging piece, the lower extreme spiro union of hanging piece has rings, the balancing weight hangs in the rings.

Further, the upper end fixedly connected with screw thread post of dead lever, the upper end and the support frame looks spiro union of screw thread post, the lower extreme fixedly connected with inserted block of support frame, the base has been cup jointed to the lower extreme of inserted block, the upper surface of base has been seted up and has been accomodate the groove.

The utility model has the advantages that:

1. the utility model discloses compare in current presentation device more nimble, not only can change the hanging position of balancing weight, can also change the position of fulcrum, make this teaching aid of use that mr can be more convenient in the middle of the teaching to still install additional the device to the fulcrum position locking, can not receive the gravity influence to lead to the device unstable.

2. The utility model discloses a structure is detachable structure, makes things convenient for the mr to carry in class.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the fixing rod of the present invention;

fig. 3 is a schematic view of the structure of the sliding chute slider of the present invention.

Description of reference numerals: 1. the support frame, 2, dead lever, 3, connecting block, 4, demonstration pole, 5, spout, 6, slide, 7, threaded rod, 8, slider, 9, inclined plane, 10, chamfer face, 11, carousel, 12, hanging block, 13, rings, 14, balancing weight, 15, screw thread post, 16, base, 17, inserted block, 18, carrier block, 19, scale, 20, accomodate the groove.

Detailed Description

The invention is further described with reference to specific embodiments, it is to be understood that these embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention, and that various changes and modifications may be effected therein by one skilled in the art after reading the teachings herein, and that such equivalents are within the scope of the invention as defined in the claims appended hereto.

The utility model discloses a structure schematic diagram, a presentation device for object level control, including support frame 1 and demonstration pole 4, support frame 1's crossbeam middle part fixedly connected with dead lever 2, the lower extreme of dead lever 2 articulates there is connecting block 3, spout 5 has been seted up to the upper surface of demonstration pole 4, the lower extreme of connecting block 3 slides in spout 5, the equal sliding connection of lower surface left end and the right-hand member of demonstration pole 4 has balancing weight 14, the preceding lateral wall fixedly connected with scale 19 of demonstration pole 4, connecting block 3 and demonstration pole 4 sliding connection, connecting block 3 becomes the fulcrum of demonstration pole 4, the realization can adjust the effect of fulcrum.

The right side wall fixedly connected with slide 6 of connecting block 3, the lower surface of slide 6 and the upper surface sliding connection of demonstration pole 4, the lower fixed surface of slide 6 is connected with slider 8, and the cross-section of slider 8 and spout 5 is trapezoidal, and the inclination of hypotenuse is the same, makes slider 8 and spout 5 laminate each other.

Slide 6 is from last to running through threaded rod 7 down, and threaded rod 7 rotates with slide 6 to be connected, and threaded rod 7's upper end fixedly connected with carousel 11, the lateral wall lower extreme spiro union of threaded rod 7 has slider 8, and slider 8 slides in spout 5, and rotatory threaded rod 7 can drive slider 8 upward movement.

Inclined plane 9 and chamfer face 10 have been seted up respectively to the inner chamber upper surface of spout 5 and the upper surface of slider 8 equally, and inclined plane 9 and chamfer face 10 are laminated mutually, and inclined plane 9 and chamfer face 10 can be laminated together when slider 8 upward movement, and two inclined planes are the rough surface, and frictional force is enough big, when two face contacts are in the same place, plays the effect of injecing the fulcrum position.

The left end and the right end of the demonstration rod 4 are integrally formed with bearing blocks 18, the bearing blocks 18 can also be used for placing balancing weight blocks 14, suspension blocks 12 are arranged on the lower surfaces of the bearing blocks 18 in a sliding mode, the lower ends of the suspension blocks 12 are connected with hanging rings 13 in a threaded mode, the balancing weight blocks 14 are suspended in the hanging rings 13, the hanging rings 13 and the suspension blocks 12 are of a detachable fixed connection structure, and the positions of the balancing weight blocks 18 can be adjusted by moving the suspension blocks 12 left and right.

The upper end fixedly connected with screw thread post 15 of dead lever 2, the upper end and the 1 looks spiro union of support frame of screw thread post 15, the lower extreme fixedly connected with inserted block 17 of support frame 1, base 16 has been cup jointed to the lower extreme of inserted block 17, and the upper surface of base 16 has been seted up and has been accomodate groove 20, accomodates groove 20 and can accomodate the dead lever and the demonstration pole 4 that dismantle.

The working principle is as follows: when demonstrating teaching, can remove the position of balancing weight 14 through stirring two hanging blocks 12, when the fulcrum position is adjusted to needs, can rotatory threaded rod 7 drive slider 8 downstream, make inclined plane 9 and chamfer face 10 contactless, can make demonstration pole 4 relative connection piece 3 horizontal slip this moment, when sliding to the assigned position, reverse rotatory threaded rod 7 drives slider 8 rebound, make inclined plane 9 and chamfer face 10 laminating together, play the fixed of connecting block 3 position on demonstration pole 4, after having done the experiment, can rotatory dead lever 2 make it break away from support frame 1, place after folding dead lever 2 and demonstration pole 4 through connecting block 3 and accomodate the inslot 20, the teacher can be convenient lift up support frame 1 and remove this device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A presentation device for object level adjustment, comprising a support frame (1) and a presentation rod (4), characterized in that: crossbeam middle part fixedly connected with dead lever (2) of support frame (1), the lower extreme of dead lever (2) articulates there is connecting block (3), spout (5) have been seted up to the upper surface of demonstration pole (4), the lower extreme of connecting block (3) slides in spout (5), the equal sliding connection of lower surface left end and the right-hand member of demonstration pole (4) has balancing weight (14), preceding lateral wall fixedly connected with scale (19) of demonstration pole (4).

2. A presentation device for object level adjustment according to claim 1, wherein: the right side wall fixedly connected with slide (6) of connecting block (3), the lower surface of slide (6) and the upper surface sliding connection of demonstration pole (4), the lower fixed surface of slide (6) is connected with slider (8).

3. A presentation device for object level adjustment according to claim 2, wherein: slide (6) are from last to running through threaded rod (7) down, threaded rod (7) rotate with slide (6) and are connected, the upper end fixedly connected with carousel (11) of threaded rod (7), the lateral wall lower extreme spiro union of threaded rod (7) has slider (8), slider (8) slide in spout (5).

4. A presentation device for object level adjustment according to claim 1, wherein: inclined plane (9) and chamfer face (10) have been seted up respectively to the inner chamber upper surface of spout (5) and the upper surface of slider (8), inclined plane (9) and chamfer face (10) are laminated mutually.

5. A presentation device for object level adjustment according to claim 1, wherein: the left end and the right end integrated into one piece of demonstration pole (4) have carrier block (18), the lower surface sliding connection of carrier block (18) has hanger block (12), the lower extreme spiro union of hanger block (12) has rings (13), balancing weight (14) hang in rings (13).

6. A presentation device for object level adjustment according to claim 1, wherein: the upper end fixedly connected with screw thread post (15) of dead lever (2), the upper end and support frame (1) looks spiro union of screw thread post (15), the lower extreme fixedly connected with inserted block (17) of support frame (1), base (16) have been cup jointed to the lower extreme of inserted block (17), accomodate groove (20) have been seted up to the upper surface of base (16).