CN112735237A

CN112735237A - Mechanical vibration test device

Info

Publication number: CN112735237A
Application number: CN202011600791.3A
Authority: CN
Inventors: 王晓允; 路晓静; 田晓博
Original assignee: Xuchang University
Current assignee: Xuchang University
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-30
Anticipated expiration: 2040-12-30
Also published as: CN112735237B

Abstract

The invention discloses a mechanical vibration test device, which comprises a base, wherein two support rods are fixed on the base, a first connecting rod is fixed on the front side of the top end of each support rod, a steel wire rope and a scale plate are fixed on the lower side of each first connecting rod, a small ball is fixed at the lower end of each steel wire rope, a tuning fork is arranged on the lower side of the scale plate and fixed on a second connecting rod, the second connecting rod is fixed on a first fixing rod through a fixing bolt, the bottom end of the first fixing rod is fixed on the base, the rear side of the second connecting rod enters, eight fourth connecting rods are circumferentially arranged outside the second connecting rod in the demonstration box, the fourth connecting rods are arranged on the fixed pipe, the demonstration pipe is arranged outside the demonstration box, when demonstration is needed, through the pulling bobble, make the bobble strike the tuning fork on, the range of tuning fork vibration demonstrates through the demonstration case, is convenient for demonstrate the change process of vibration range, convenient to use, excellent in use effect.

Description

Mechanical vibration test device

Technical Field

The invention relates to a mechanical experiment device, in particular to a mechanical vibration experiment device.

Background

In a broad sense, if a physical quantity representing a motion is repeatedly changed in a way of increasing and decreasing, the motion can be called as vibration, if the changed physical quantity is some mechanical quantity or mechanical quantity, such as displacement, speed, acceleration stress, strain and the like of an object, the vibration is called as mechanical vibration, but many vibrations cannot be directly observed by naked eyes, some demonstration devices cannot be displayed intuitively, some demonstration devices display the vibration through complex instruments, are complex and not suitable for teaching display, and cannot be directly moved to a classroom, so that the design of a mechanical vibration test device convenient to operate is very necessary.

Disclosure of Invention

The invention aims to solve the problems and provides a mechanical vibration testing device.

In order to achieve the purpose, the invention adopts the following technical scheme: a mechanical vibration test device comprises a base, two support rods are fixed on the base, a first connecting rod is fixed on the front side of the top end of each support rod, a steel wire rope and a scale plate are fixed on the lower side of each first connecting rod, small balls are fixed on the lower ends of the steel wire ropes, tuning forks are arranged on the lower side of the scale plate and fixed on second connecting rods, the second connecting rods are fixed on first fixing rods through fixing bolts, the bottom ends of the first fixing rods are fixed on the base, the rear sides of the second connecting rods enter a demonstration box, eight fourth connecting rods are circumferentially arranged on the outer circumference of the second connecting rods in the demonstration box, the fourth connecting rods are arranged in fixing tubes, one ends of the fourth connecting rods, far away from the second connecting rods, are fixed on springs, one ends of the springs, far away from the fourth connecting rods, are fixed on fixing tubes, slots are formed in, the piston is fixed to the outer end of the third connecting rod, the piston is arranged in the liquid pipe, water is arranged in the liquid pipe, the outer side of the liquid pipe is communicated with the connecting pipe, and the connecting pipe penetrates through the demonstration box plate to be communicated with the demonstration pipe.

Preferably, the ball may strike the upper end of the tuning fork.

Preferably, scales are uniformly arranged on the scale plate.

Preferably, the water is red in color.

Preferably, the demonstration box is circular.

Preferably, the lower part of the demonstration box is provided with a second fixed rod, and the lower end of the second fixed rod is fixed on the base.

Advantageous effects

Compared with the prior art, the invention has the advantages that when vibration demonstration is needed, the small ball is pulled outwards, the pulling angle of the small ball is adjusted through the scale plate, then the small ball is released, the small ball is made to impact the tuning fork, the vibration amplitude of the tuning fork is transmitted to the fourth connecting rod through the second connecting rod, the fourth connecting rod moves outwards to shrink the spring, the fourth connecting rod drives the moving block to move outwards, the moving block pushes the piston outwards through the third connecting rod, the piston makes water enter the demonstration tube through the connecting tube, when the vibration applied to the second connecting rod disappears, the spring stretches to restore the position of the fourth connecting rod, the piston makes the water enter the liquid tube again, the change process of the vibration amplitude is convenient to demonstrate, the vibration change conditions in multiple directions can be demonstrated, the operation is simple, the use is convenient, the mechanical vibration test can be conveniently carried out, and the small ball is pulled to different scales, the change condition of vibration amplitude under different impact forces can be conveniently demonstrated, and the demonstration effect is good.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a view of the internal structure of the demonstration box of the present invention;

fig. 4 is a layout of the present invention demonstrating tubes.

Reference numerals in the figures

1. A base; 2. a support bar; 3. a wire rope; 4. a first connecting rod; 5. a scale plate; 6. a pellet; 7. a tuning fork; 8. a first fixing lever; 9. fixing the bolt; 10. a second connecting rod; 11. a demonstration box; 12. a second fixing bar; 13. demonstrating the box board; 14. a fixed tube; 15. a spring; 16. water; 17. a liquid pipe; 18. a connecting pipe; 19. a piston; 20. a third connecting rod; 21. a fourth connecting rod; 22. a demonstration tube; 23. moving the mass.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1-4: a mechanical vibration test device comprises a base 1, two support rods 2 are fixed on the base 1, a first connecting rod 4 is fixed on the front side of the top end of each support rod 2, a steel wire rope 3 and a scale plate 5 are fixed on the lower side of each first connecting rod 4, scales are uniformly arranged on the scale plate 5, small balls 6 are fixed on the lower end of each steel wire rope 3, the small balls 6 can impact the upper ends of tuning forks 7, tuning forks 7 are arranged on the lower side of the scale plate 5, the tuning forks 7 are fixed on second connecting rods 10, the second connecting rods 10 are fixed on first fixing rods 8 through fixing bolts 9, the bottom ends of the first fixing rods 8 are fixed on the base 1, the rear sides of the second connecting rods 10 enter a demonstration box 11, the demonstration box 11 is circular, second fixing rods 12 are arranged on the lower portion of the demonstration box 11, the lower ends of the second fixing rods 12 are fixed on the base 1, eight fourth connecting rods 21 are arranged in the, one end, far away from second connecting rod 10, of fourth connecting rod 21 is fixed on spring 15, one end, far away from fourth connecting rod 21, of spring 15 is fixed on fixed pipe 14, the rear side of fixed pipe 14 is provided with a groove, the outer side of fixed pipe 14 is fixed on demonstration boxboard 13, fixed moving block 23 at the rear side of fourth connecting rod 21 is arranged in the groove, third connecting rod 20 is arranged on the outer side of moving block 23, piston 19 is fixed at the outer end of third connecting rod 20, piston 19 is arranged in liquid pipe 17, water 16 is arranged in liquid pipe 17, the color of water 16 is red, liquid pipe 17 is fixed on demonstration boxboard 13, connecting pipe 18 is communicated with the outer side of liquid pipe 17, and connecting pipe 18 passes through demonstration boxboard 13 and is communicated with demonstration pipe.

When vibration demonstration is needed, the small ball 6 is pulled to the outer side, the pulling angle of the small ball 6 is adjusted through the scale plate 5, then the small ball 6 is released, the small ball 6 is made to impact on the tuning fork 7, the vibration amplitude of the tuning fork 7 is transmitted to the fourth connecting rod 21 through the second connecting rod 10, the fourth connecting rod 21 moves to the outer side, the spring 15 is contracted, the fourth connecting rod 21 drives the moving block 23 to move to the outer side, the moving block 23 pushes the piston 19 to the outer side through the third connecting rod 20, the piston 19 enables water to enter the demonstration tube 22 through the connecting tube 18, when the vibration applied to the second connecting rod 10 disappears, the spring 15 extends to enable the fourth connecting rod 21 to restore to the original position, the piston 19 enables the water to enter the liquid tube 17 again, the change process of the vibration amplitude can be conveniently demonstrated, meanwhile, the vibration change conditions in multiple directions can be demonstrated, the operation is simple and the, the small ball 6 is pulled to different scales, so that the change condition of the vibration amplitude under different impact forces can be conveniently demonstrated, and the demonstration effect is good.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a mechanical vibration test device, includes the base, its characterized in that: two support rods are fixed on a base, a first connecting rod is fixed on the front side of the top end of each support rod, a steel wire rope and a scale plate are fixed on the lower side of each first connecting rod, a small ball is fixed at the lower end of each steel wire rope, a tuning fork is arranged on the lower side of each scale plate and fixed on a second connecting rod, the second connecting rods are fixed on the first fixing rods through fixing bolts, the bottom ends of the first fixing rods are fixed on the base, the rear sides of the second connecting rods enter a demonstration box, eight fourth connecting rods are circumferentially arranged outside the second connecting rods in the demonstration box and arranged in fixing tubes, one ends of the fourth connecting rods, far away from the second connecting rods, are fixed on springs, one ends of the springs, far away from the fourth connecting rods, are fixed on fixing tubes, the rear sides of the fixing tubes are provided with grooves, moving blocks fixed on the rear sides of the, water is arranged in the liquid pipe, the outer side of the liquid pipe is communicated with the connecting pipe, and the connecting pipe penetrates through the demonstration box plate to be communicated with the demonstration pipe.

2. A mechanical vibration testing apparatus as claimed in claim 1, wherein: the ball may strike the upper end of the tuning fork.

3. A mechanical vibration testing apparatus as claimed in claim 1, wherein: scales are evenly arranged on the scale plate.

4. A mechanical vibration testing apparatus as claimed in claim 1, wherein: the water was red in color.

5. A mechanical vibration testing apparatus as claimed in claim 1, wherein: the demonstration box is circular.

6. A mechanical vibration testing apparatus as claimed in claim 1, wherein: the lower part of the demonstration box is provided with a second fixed rod, and the lower end of the second fixed rod is fixed on the base.