CN212903514U

CN212903514U - Boer vibration instrument

Info

Publication number: CN212903514U
Application number: CN202021966718.3U
Authority: CN
Inventors: 赵东汴; 黄晓敏; 赵东梁
Original assignee: Shanghai Shibo Ind Co ltd
Current assignee: Shanghai Shibo Ind Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-04-06
Anticipated expiration: 2030-09-10

Abstract

The utility model belongs to the field of vibration detection, and particularly discloses a Bohr vibration meter, which comprises a copper balance wheel, a rocker, a volute spiral spring, a photoelectric encoder, a support frame, a damping coil, a rocker adjusting screw, a connecting rod, a stepping motor, a base and a control electronic box; an output shaft of the stepping motor is provided with an eccentric wheel and drives a copper balance wheel to swing through a connecting rod mechanism; the connecting rod is provided with a horizontal correction device. The utility model adopts a large-size touch liquid crystal screen to display the vibration curve in real time, the override is visual and simple, and the photoelectric encoder is utilized to measure the amplitude and the phase difference, the experimental data is more accurate, and the precision is higher; the data processing and error analysis are rich; a horizontal correction device is arranged on the connecting rod, so that the connecting rod can be conveniently horizontally corrected; utilize the form of magnetism to inhale to install to fix a position through the form of pegging graft, easy dismounting can take off magnetism piece intercommunication spirit level after the completion of correction, reduces the weight gain of connecting rod, convenient to use.

Description

Boer vibration instrument

Technical Field

The utility model relates to a vibration detection area specifically is a Bohr's vibrometer.

Background

The resonance phenomenon caused by forced vibration in the scientific and technological fields of mechanical manufacturing, building engineering and the like draws great attention of engineering technicians, and the vibration has a destructive effect and also has a plurality of practical values. Many electroacoustic devices are designed and manufactured by using the resonance principle. In addition, "resonance" is also an important research means in microscopic scientific research, such as research on material structure by nuclear magnetic resonance and paramagnetic resonance.

Forced vibration is researched through a vibration meter at present, the period of forced torque is measured through the induction of a photoelectric door, the error is large, and the precision of experimental data is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bohr vibration appearance to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a Bohr vibration instrument comprises a copper balance wheel, a rocker, a volute spiral spring, a photoelectric encoder, a support frame, a damping coil, a rocker adjusting screw, a connecting rod, a stepping motor, a base and a control electric box; the support frame is vertically arranged on a boss arranged on the base, the central shaft of the copper balance wheel is rotationally arranged on the support frame, and the two groups of photoelectric encoders are respectively arranged on the central shaft of the copper balance wheel and the output shaft of the stepping motor; the damping coil is arranged at the bottom of the support frame, an iron core is arranged in the damping coil, and the copper balance wheel is embedded in a gap of the iron core; an output shaft of the stepping motor is provided with an eccentric wheel and drives a copper balance wheel to swing through a connecting rod mechanism; and a horizontal correction device is arranged on the connecting rod.

Preferably, one end of the spiral spring is fixed on the central shaft of the copper balance wheel, the other end of the spiral spring is fixed on the support frame, and the copper balance wheel freely swings around the central shaft thereof in a reciprocating manner under the elastic force of the spiral spring.

Preferably, the connecting rod mechanism comprises a connecting rod and a rocker, one end of the connecting rod is mounted on the eccentric wheel, the other end of the connecting rod is connected with the rocker through a rocker adjusting screw, and the upper end of the rocker is rotatably connected with a central shaft of the copper balance wheel.

Preferably, the control electronic box is provided with a touch liquid crystal display screen and is respectively connected with the photoelectric encoder, the stepping motor and the control end of the touch liquid crystal display screen.

Preferably, the horizontal correction device comprises a magnetic sheet, a magnetic suction block and a level meter, the magnetic sheet is adhered to and wrapped in the middle of the connecting rod, the magnetic suction block is of an arc-shaped curved surface structure, a concave surface of the magnetic suction block is clamped on the connecting rod in a matched manner and is magnetically sucked with the magnetic sheet, and the level meter is installed on an arched surface of the magnetic suction block.

Preferably, the top surface of the magnetic sheet is provided with a positioning inserted bar with a convex structure, and a positioning groove for embedding the positioning inserted bar is arranged in the concave surface of the magnetic suction block in a matching manner.

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

1. the utility model adopts a large-size touch liquid crystal screen to display the vibration curve in real time, the override is visual and simple, and the photoelectric encoder is utilized to measure the amplitude and the phase difference, the experimental data is more accurate, and the precision is higher; the data processing and error analysis are rich.

2. The horizontal correction device is arranged on the connecting rod, so that the connecting rod can be conveniently horizontally corrected; utilize the form of magnetism to inhale to install to fix a position through the form of pegging graft, easy dismounting can take off magnetism piece intercommunication spirit level after the completion of correction, reduces the weight gain of connecting rod, convenient to use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of a horizontal correction device on a connecting rod of the present invention;

FIG. 3 is a schematic view of the positioning insertion rod of the magnetic sheet of the present invention;

fig. 4 is a schematic view of the magnetic attraction block of the present invention.

In the figure: 1. a copper balance wheel; 2. a rocker; 3. a volute spiral spring; 4. a photoelectric encoder; 5. a support frame; 6. a damping coil; 7. a rocker adjusting screw; 8. a connecting rod; 9. a stepping motor; 10. a base; 11. controlling an electric box; 12. touch-control the liquid crystal display; 13. a magnetic sheet; 14. a magnetic block; 15. a level gauge; 16. positioning the inserted rod; 17. and (6) positioning a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: a Bohr vibration instrument comprises a copper balance wheel 1, a rocker 2, a volute spiral spring 3, a photoelectric encoder 4, a support frame 5, a damping coil 6, a rocker adjusting screw 7, a connecting rod 8, a stepping motor 9, a base 10 and a control electronic box 11; the support frame 5 is vertically arranged on a boss arranged on the base 10, the central shaft of the copper balance wheel 1 is rotationally arranged on the support frame 5, and the photoelectric encoders 4 are arranged in two groups and are respectively arranged on the central shaft of the copper balance wheel 1 and the output shaft of the stepping motor 9; the damping coil 6 is arranged at the bottom of the support frame 5, an iron core is arranged in the damping coil, and the copper balance wheel 1 is embedded in a gap of the iron core; an output shaft of the stepping motor 9 is provided with an eccentric wheel and drives the copper balance wheel 1 to swing through a connecting rod mechanism; and a horizontal correction device is arranged on the connecting rod 8.

Furthermore, one end of the spiral spring 3 is fixed on the central shaft of the copper balance wheel 1, and the other end is fixed on the support frame 5, and under the elastic force of the spiral spring 3, the copper balance wheel 1 freely swings around the central shaft thereof in a reciprocating manner.

Furthermore, the connecting rod mechanism comprises a connecting rod 8 and a rocker 2, one end of the connecting rod 8 is installed on the eccentric wheel, the other end of the connecting rod is connected with the rocker 2 through a rocker adjusting screw 7, and the upper end of the rocker 2 is rotatably connected with the central shaft of the copper balance wheel 1.

Further, a touch liquid crystal display screen 12 is arranged on the control electric box 11, and the control electric box 11 is connected with the photoelectric encoder 4, the stepping motor 9 and a control end of the touch liquid crystal display screen 12 respectively.

Further, horizontal correcting unit includes magnetic sheet 13, magnetism piece 14 and spirit level 15, and magnetic sheet 13 pastes the parcel at the connecting rod 8 middle part, and magnetism piece 14 is the curved surface structure of inhaling, and its concave surface adaptation joint is on connecting rod 8, and with magnetic sheet 13 magnetism looks attraction, spirit level 15 installs on magnetism piece 14 hunch face of inhaling.

Furthermore, the top surface of the magnetic sheet 13 is provided with a positioning inserted bar 16 with a convex structure, and a positioning groove 17 for embedding the positioning inserted bar 16 is arranged in the concave surface of the magnetic block 14 in a matching manner.

The working principle is as follows: under the elastic force of the spiral spring 3, the copper balance wheel 1 can freely swing back and forth around the central axis thereof. And the photoelectric encoder 4 is arranged on the central shaft of the copper balance wheel 1 and is used for measuring the amplitude angle value of the copper balance wheel 1 and the vibration period of the balance wheel, transmitting data to the control electronic box 11 and displaying a vibration curve on the touch liquid crystal display screen 12 in real time.

The copper balance wheel 1 is embedded in the gap of the iron core, when the coil passes through direct current, the copper balance wheel 1 is under the action of electromagnetic damping force, and the damping force can be changed correspondingly by changing the current by operating the touch liquid crystal display screen 12.

The stepping motor 9 drives the copper balance wheel 1 through the link mechanism to make the copper balance wheel perform forced vibration, the photoelectric encoder 4 arranged on the output shaft of the stepping motor 9 rotates along with the stepping motor 9, the phase difference and the period of the forced torque can be measured by the photoelectric encoder 4, data are sent to the control electronic box 11, and a vibration curve and the amplitude and the period of the copper balance wheel 1 are displayed on the touch liquid crystal display screen 12 in real time.

Before the experiment, need adjust the connecting rod to the horizontality, during horizontal correction, inhale 14 magnetism of piece of magnetism and inhale the piece 13 of joint on connecting rod 8, the location inserted bar 16 on the magnetic sheet 13 imbeds in the constant head tank 17 of piece 14 is inhaled to the magnetism, accomplishes correcting unit's installation, relies on spirit level 15 to carry out horizontal calibration as the reference, directly after the calibration is accomplished with magnetism inhale 14 take off can, easy operation.

It is worth noting that: whole device realizes control to it through control electronic box 11 and touch-control liquid crystal display 12, because the equipment that control button matches is equipment commonly used, belongs to current mature technology, no longer gives unnecessary details its electric connection relation and specific circuit structure here.

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 Bohr vibration instrument is characterized by comprising a copper balance wheel (1), a rocker (2), a volute spiral spring (3), a photoelectric encoder (4), a support frame (5), a damping coil (6), a rocker adjusting screw (7), a connecting rod (8), a stepping motor (9), a base (10) and a control electronic box (11); the support frame (5) is vertically arranged on a boss arranged on the base (10), the central shaft of the copper balance wheel (1) is rotatably arranged on the support frame (5), and the photoelectric encoders (4) are arranged in two groups and are respectively arranged on the central shaft of the copper balance wheel (1) and the output shaft of the stepping motor (9); the damping coil (6) is arranged at the bottom of the support frame (5), an iron core is arranged in the damping coil, and the copper balance wheel (1) is embedded in a gap of the iron core; an output shaft of the stepping motor (9) is provided with an eccentric wheel and drives the copper balance wheel (1) to swing through a connecting rod mechanism; the connecting rod (8) is provided with a horizontal correction device.

2. A bohr vibrator according to claim 1, wherein: one end of the volute spiral spring (3) is fixed on the central shaft of the copper balance wheel (1), the other end of the volute spiral spring is fixed on the support frame (5), and the copper balance wheel (1) freely swings around the central shaft thereof in a reciprocating mode under the elastic acting force of the volute spiral spring (3).

3. A bohr vibrator according to claim 1, wherein: the connecting rod mechanism comprises a connecting rod (8) and a rocker (2), one end of the connecting rod (8) is installed on the eccentric wheel, the other end of the connecting rod is connected with the rocker (2) through a rocker adjusting screw (7), and the upper end of the rocker (2) is rotatably connected with the central shaft of the copper balance wheel (1).

4. A bohr vibrator according to claim 1, wherein: the control electric box (11) is provided with a touch liquid crystal display screen (12), and the control electric box (11) is respectively connected with the photoelectric encoder (4), the stepping motor (9) and the control end of the touch liquid crystal display screen (12).

5. A bohr vibrator according to claim 1, wherein: horizontal correcting unit includes magnetic sheet (13), magnetism piece (14) and spirit level (15) of inhaling, and the parcel is pasted in connecting rod (8) middle part in magnetic sheet (13), and magnetism piece (14) of inhaling is the arc curved surface structure, and its concave surface adaptation joint is on connecting rod (8), and with magnetic sheet (13) magnetism looks attraction, spirit level (15) are installed on magnetism piece (14) hunch face of inhaling.

6. A Bohr vibrator according to claim 5, wherein: the top surface of the magnetic sheet (13) is provided with a positioning inserted bar (16) with a convex structure, and a positioning groove (17) for embedding the positioning inserted bar (16) is arranged in the concave surface of the magnetic block (14) in a matching way.