CN104318830A - String vibration speed measurement experiment instrument with vibration motor and electric vibration tuning fork as double vibration wave sources - Google Patents
String vibration speed measurement experiment instrument with vibration motor and electric vibration tuning fork as double vibration wave sources Download PDFInfo
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- CN104318830A CN104318830A CN201410583642.9A CN201410583642A CN104318830A CN 104318830 A CN104318830 A CN 104318830A CN 201410583642 A CN201410583642 A CN 201410583642A CN 104318830 A CN104318830 A CN 104318830A
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
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Abstract
The invention provides a string vibration speed measurement experiment instrument with a vibration motor and an electric vibration tuning fork as double vibration wave sources. The string vibration speed measurement experiment instrument aims to solve the technical problems that an existing vibration experiment instrument is complicated in equipment structure, poor in demonstration effect and the like. The string vibration speed measurement experiment instrument comprises an experiment instrument body. A base is arranged at the bottom of the experiment instrument body, and a vibration motor assembly is installed on the experiment instrument body. The vibration motor assembly is installed on the head portion of the electric vibration tuning fork through a fixing flat plate. The vibration motor is installed in the vibration motor assembly. An eccentric block, a speed measurement disk and a photoelectric door are installed on an outer rotating shaft of the vibration motor. A direct-current power source speed measurement instrument is installed on the right side of the base. A voltage adjusting and frequency adjusting power source and a vibration motor speed measurement instrument are installed on the direct-current power source speed measurement instrument. The voltage adjusting and frequency adjusting power source is provided with a voltage adjustment and frequency adjustment alternation switch, a power switch and the like. The vibration motor speed measurement instrument is provided with a power supply switch, a frequency switch and the like. When the string vibration speed measurement experiment instrument is used, through the steps of power source connection, voltage adjustment and the like, the string vibration frequency is obtained by measuring the vibration frequency with the vibration motor as the wave source finally. The frequencies and the wavelengths of the vibration strings of the double vibration wave sources can be mutually checked and compared. According to the string vibration speed measurement experiment instrument with the vibration motor and the electric vibration tuning fork as the double vibration wave sources, the structure is reasonable, and an operation method is easy to grasp.
Description
Technical field
The present invention relates to a kind of Chord vibration experiment instrument, particularly relate to the Chord vibration speedometer that a kind of vibrating motor is wave source.This Chord vibration experiment instrument is mainly used in the Physical Experiment of university, belongs to power thermophysical experiment technical field.
Background technology
At present, in power ermal physics Chord vibration experiment field, general adopt the mode of vibration of following Chord vibration wave source: electricity shakes tuning fork to be the Chord vibration mode of wave source or electromagnetism vibration generator be the Chord vibration mode of wave source.All there is many drawbacks in aforesaid way, although first kind of way demonstrating effect is obvious, cost is lower, and there is serious experiment blind area, conventional efficient is low.Then a kind of demonstrating effect is not obvious, and device structure is complicated, and cost is high, and efficiency is low, and high to the material requirements of string, and poor reliability causes experimental teaching quality influenced.
Summary of the invention
The object of the invention is in order to solve existing Chord vibration experiment instrument and device in various degree there is device structure complexity, cost is high, experiment has blind area, conventional efficient is low, demonstrating effect is not obvious, and high to the material requirements of string, poor reliability, the technical matterss such as experimental teaching quality is influenced, providing a kind of novel vibrating motor and the electricity tuning fork that shakes is the Chord vibration speedometer of two vibration wave source.
For achieving the above object, the present invention adopts following technical proposals: vibrating motor and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it comprises experiment instrument main body, base (2) is provided with in the bottom of described experiment instrument main body, base (2) and vibrating motor parts fixed flat planar (21) are that the electricity of the Chord vibration experiment instrument (1) of the wave source tuning fork head (19) that shakes supports fixing by the electricity tuning fork that shakes.Above-mentioned experiment instrument main body is provided with vibrating motor parts (7), vibrating motor parts (7) are arranged on fixed flat planar (21), fixed flat planar (21) is arranged on electricity and shakes tuning fork head (19) top, and electricity shakes tuning fork head (19) single-point support fixed flat planar (21) fixing with screw (20).In above-mentioned vibrating motor parts (7), vibrating motor (10) is installed, is fixed on fixed flat planar (21) at described vibrating motor (10) vibrating motor fixed mount (9).Described vibrating motor (10) outer shaft (11) right side is provided with eccentric block (8), described vibrating motor (10) outer shaft (11) left side is provided with tachometer disc (12), photoelectricity door (13).Above-mentioned vibrating motor (10) is connected with one end of binding post (14), the other end of binding post (14) is connected with direct supply knotmeter (16) by extension line (15), and direct supply knotmeter (16) is arranged on the left side of base (2).Above-mentioned direct supply knotmeter (16) is provided with voltage regulation and frequency modulation power supply (17), vibrating motor knotmeter (18).Be fastenedly connected with trip bolt (6) with vibration string (5) in the middle of the right side edge of above-mentioned fixed flat planar (21).Above-mentioned vibration string (5) connects counterweight (3) through angle sheave (4), and angle sheave (4) is fixed on laboratory table.
The present invention adopts vibrating motor to be the experiment instrument that the vibrotechnique of wave source is tested for Chord vibration, vibrating motor parts are energized, to voltage regulation of electric power sources or frequency modulation, change vibrating motor vibration frequency and amplitude, vibrating motor vibration drives fixed flat planar vibration, and fixed flat planar vibration drives Chord vibration.The vibration frequency that Chord vibration frequency can be wave source by measuring vibrations motor obtains, and two vibration wave source mutually can be proofreaded and compare, and adopts single-point support fixed flat planar to be conducive to the vibration that vibrating motor parts are wave source.
Feature of the present invention and beneficial effect: rational in infrastructure, cost is low, and the effective and efficiency of Chord vibration experiment is high, and experimental teaching quality is excellent, because device requirement amount is large, is applicable to large-scale production.
Be in particular in:
Vibrating motor parts are adopted to be vibration wave source, vibrating motor component vibration frequency changes by direct supply knotmeter and measures, Chord vibration frequency can be surveyed adjustable, Chord vibration wide frequency range, experimental study wide ranges, without experiment blind area, equipment is few, apparatus structure is simple, and simple to operate, conventional efficient is high.
Adopt vibrating motor and electricity to shake tuning fork for two vibration wave source, vibrating motor component vibration frequency and wavelength mutually can be proofreaded and compare with shake tuning fork vibration frequency and wavelength of electricity, and experiment effect is good.
On on the right side of vibrating motor outer shaft, eccentric block is installed, vibrating motor vibration frequency is stablized, frequency vibration is accurate, tachometer disc, photoelectricity door are installed on the left of vibrating motor outer shaft, be wired to the direct supply knotmeter that chassis left side is installed, meticulousr regulation and control vibrating motor vibration frequency and measuring vibrations motor speed are fast accurate, can regulate and control out larger amplitude effect, make regulation and control and measure more evenly, experimental precision is high, experiment effect is obviously good.
Because voltage regulation and frequency modulation power supply and vibrating motor knotmeter adopt all-in-one to make, reduce cost, convenient experimental operation and raising experimental implementation efficiency, reduce experimental implementation error, experimental teaching quality is excellent.
Because vibrating motor is wave source and be vibrate string with non-metal rope, vibration reliability is high, and demonstrating effect is obvious, and regulate and measure easily, old vibration string is changed easy, raising experimental implementation efficiency.Fixed flat planar, vibrating motor parts shell adopts TPU to make, elasticity, toughness, wearing quality, hardness, corrosion stability, processibility and experimental etc. all good.
Because the Physical Experiment of a university generally needs 20-40 platform, device requirement amount is large, is conducive to large-scale production.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Embodiment
Embodiment 1
Referring to Fig. 1, vibrating motor and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it comprises experiment instrument main body, base 2 is provided with in the bottom of described experiment instrument main body, base 2 and vibrating motor parts fixed flat planar 21 are that the electricity of the Chord vibration experiment instrument 1 of the wave source tuning fork head 19 that shakes supports fixing by the electricity tuning fork that shakes.Above-mentioned experiment instrument main body is provided with vibrating motor parts 7, and vibrating motor parts 7 are arranged on fixed flat planar 21, and fixed flat planar 21 is arranged on electricity and shakes above tuning fork head 19, and electricity shakes tuning fork head 19 single-point support fixed flat planar 21 fixing with screw 20.In above-mentioned vibrating motor parts 7, vibrating motor 10 is installed, is fixed on fixed flat planar 21 at described vibrating motor 10 vibrating motor fixed mount 9.On on the right side of described vibrating motor 10 outer shaft 11, eccentric block 8 is installed, on the left of described vibrating motor 10 outer shaft 11, tachometer disc 12, photoelectricity door 13 is installed.Above-mentioned vibrating motor 10 is connected with one end of binding post 14, and the other end of binding post 14 is connected with direct supply knotmeter 16 by extension line 15, and direct supply knotmeter 16 is arranged on the left side of base 2.Above-mentioned direct supply knotmeter 16 is provided with voltage regulation and frequency modulation power supply 17, vibrating motor knotmeter 18.Be fastenedly connected with vibration string 5 trip bolt 6 in the middle of the right side edge of above-mentioned fixed flat planar 21.Above-mentioned vibration string 5 connects counterweight 3 through angle sheave 4, and angle sheave 4 is fixed on laboratory table.
Be that the electricity of the Chord vibration test instrument 1 of wave source shakes above tuning fork head 19 and vibrating motor parts 7 is housed for vibration wave source at the described electricity tuning fork that shakes, vibrating motor component vibration frequency changes by direct supply knotmeter 16 and measures, and two vibration wave source mutually can be proofreaded and compare.
Described fixed flat planar 21, vibrating motor fixed mount 9, vibrating motor parts 7 shell all adopts TPU to make.Base 2 adopts cast iron or plank to make.Eccentric block 8 adopts Cu or Fe to make.
Described voltage regulation and frequency modulation power supply 17 and vibrating motor knotmeter 18 adopt all-in-one to make.
Described experiment instrument vibration string 5 adopts non-metal rope.
Principle of work
Employing vibrating motor is the Chord vibration speedometer device of wave source, be wave source by vibrating motor 10, it is the exciting source that power source and vibration source are combined as a whole, vibrating motor 10 adds eccentric block 8 by outer shaft 11 and forms, when vibrating motor 10 outer shaft 11 rotates, rotating shaft 11 drives eccentric block to produce the vibration passing of exciting force by vibrating motor 10 to vibration string 5.As shown in Figure 1, only need regulate direct supply knotmeter 16 supply voltage, the voltage at vibrating motor 10 two ends can be changed, i.e. adjustable vibrating motor 10 rotating speed and power, i.e. adjustable vibrating motor 10 vibration frequency and amplitude. namely adjustable vibrates vibration frequency and the amplitude of string 5; If vibrating motor 10 both end voltage is certain, change vibrating motor 10 both end voltage frequency, i.e. adjustable vibrating motor 10 rotating speed, i.e. adjustable vibrating motor 10 vibration frequency, the i.e. vibration frequency of adjustable vibration string 5, vibrating motor 10 drives that tachometer disc 12 rotates, tachometer disc 12 rotating speed by photoelectricity door 13 by extension line 15, binding post 14, tach signal is delivered to vibrating motor knotmeter 18 records and show vibrating motor 10 rotating speed and frequency.Vibration string 5 vibration frequency can be the vibration frequency acquisition of wave source by measuring vibrations motor 10, and the vibration frequency of vibrating motor 10 can be that the Chord vibration frequency of wave source compares and proofreads with the electricity tuning fork that shakes.
Method of operating:
During use, first will switching on power and pressure regulation to the voltage regulation and frequency modulation power supply 17 on direct supply knotmeter 16 before Chord vibration, after supply voltage is determined, be energized to vibrating motor parts 7, adopt the vibrating motor parts 7 of single-point support fixed flat planar 21 to start to vibrate for wave source, to pressure regulation variable frequency power source 17 frequency modulation, change vibrating motor parts 7 vibration frequency, vibrating motor 10 rotating speed is determined by vibrating motor knotmeter 18, determine vibrating motor 10 vibration frequency again, vibrating motor 10 vibrates and drives vibrating motor parts 7 to vibrate, drive fixed flat planar 21 to move again to shake, vibration string 5 is driven to vibrate again, change voltage regulation and frequency modulation power supply 17 supply voltage, vibrating motor 10 rotating speed can be changed, vibrating motor 10 vibration frequency and amplitude can be changed, vibrating motor parts 7 vibration frequency and amplitude can be changed, fixed flat planar 21 vibration frequency and amplitude can be changed, change vibration string 5 vibration frequency and amplitude again, on on the left of being driven by the rotation of vibrating motor 10 outer shaft 11, tachometer disc 12 is installed to rotate, tachometer disc 12 rotating speed passes through extension line 15 by photoelectricity door 13, tach signal is delivered to vibrating motor knotmeter 18 and records and show vibrating motor 10 rotating speed and frequency by binding post 14.The vibration frequency that Chord vibration 5 vibration frequency can be wave source by measuring vibrations motor 10 obtains.Vibrating motor 10 is after Chord vibration 5 vibration frequency of wave source is measured, unclamp screw 20 fixed flat planar 21 and vibrating motor parts 7 are taken down, Chord vibration 5 is fixed on electricity with screw 20 to shake tuning fork head 19 tops, can start the electricity tuning fork that shakes is the Chord vibration experiment instrument 1 of vibration wave source, mutually can be proofreaded the frequency and wavelength that compare vibration string 5 by two vibration wave source.
Claims (6)
1. vibrating motor and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it comprises experiment instrument main body, it is characterized in that: the bottom of described experiment instrument main body is provided with base (2), base (2) and vibrating motor parts fixed flat planar (21), be that the electricity of the Chord vibration experiment instrument (1) of the wave source tuning fork head (19) that shakes supports fixing by the electricity tuning fork that shakes, above-mentioned experiment instrument main body is provided with vibrating motor parts (7), vibrating motor parts (7) are arranged on fixed flat planar (21), fixed flat planar (21) be arranged on electricity shake tuning fork head (19) top, electricity shake tuning fork head (19) single-point support fixed flat planar (21) and with screw (20) fix, in above-mentioned vibrating motor parts (7), vibrating motor (10) is installed, be fixed on fixed flat planar (21) at described vibrating motor (10) vibrating motor fixed mount (9), described vibrating motor (10) outer shaft (11) right side is provided with eccentric block (8), described vibrating motor (10) outer shaft (11) left side is provided with tachometer disc (12), photoelectricity door (13), above-mentioned vibrating motor (10) is connected with one end of binding post (14), the other end of binding post (14) is connected with direct supply knotmeter (16) by extension line (15), direct supply knotmeter (16) is arranged on the left side of base (2), above-mentioned direct supply knotmeter (16) is provided with voltage regulation and frequency modulation power supply (17), vibrating motor knotmeter (18), be fastenedly connected with trip bolt (6) with vibration string (5) in the middle of the right side edge of above-mentioned fixed flat planar (21), above-mentioned vibration string (5) connects counterweight (3) through angle sheave (4), angle sheave (4) is fixed on laboratory table.
2. vibrating motor according to claim 1 and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it is characterized in that: be that the electricity of the Chord vibration test instrument (1) of wave source shakes that tuning fork head (19) is equipped with vibrating motor parts (7) is vibration wave source at the described electricity tuning fork that shakes, vibrating motor component vibration frequency changes by direct supply knotmeter (16) and measures.
3. vibrating motor according to claim 1 and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it is characterized in that: described fixed flat planar (21), vibrating motor fixed mount (9) and vibrating motor parts (7) shell all adopt TPU to make, base (2) adopts cast iron or plank to make, and eccentric block (8) adopts Cu or Fe to make.
4. vibrating motor according to claim 1 and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it is characterized in that: described voltage regulation and frequency modulation power supply (17) and vibrating motor knotmeter (18) adopt machine.
5. vibrating motor according to claim 1 and the electric tuning fork that shakes are the Chord vibration speedometer of two vibration wave source, it is characterized in that: described experiment instrument vibration string (5) adopts non-metal rope.
6. the vibrating motor as described in claim 1 or 2 or 3 or 4 or 5 and the electric tuning fork that shakes are the method for operating of the Chord vibration speedometer of two vibration wave source, are realized by following step:
First will switching on power and pressure regulation to the voltage regulation and frequency modulation power supply 17 on direct supply knotmeter 16 before Chord vibration, after supply voltage is determined, be energized to vibrating motor parts 7, the vibrating motor parts 7 of single-point support fixed flat planar 21 are adopted to start to vibrate for wave source, to pressure regulation variable frequency power source 17 frequency modulation, change vibrating motor parts 7 vibration frequency, vibrating motor 10 rotating speed is determined by vibrating motor knotmeter 18, determine vibrating motor 10 vibration frequency again, vibrating motor 10 vibrates and drives vibrating motor parts 7 to vibrate, drive fixed flat planar 21 to move again to shake, vibration string 5 is driven to vibrate again, change voltage regulation and frequency modulation power supply 17 supply voltage, vibrating motor 10 rotating speed can be changed, vibrating motor 10 vibration frequency and amplitude can be changed, vibrating motor parts 7 vibration frequency and amplitude can be changed, fixed flat planar 21 vibration frequency and amplitude can be changed, change vibration string 5 vibration frequency and amplitude again, being rotated by vibrating motor 10 outer shaft 11 drives the upper tachometer disc 12 installed in left side to rotate, tachometer disc 12 rotating speed passes through extension line 15 by photoelectricity door 13, tach signal is delivered to vibrating motor knotmeter 18 and records and show vibrating motor 10 rotating speed and frequency by binding post 14, the vibration frequency that Chord vibration 5 vibration frequency can be wave source by measuring vibrations motor 10 obtains, vibrating motor 10 is after Chord vibration 5 vibration frequency of wave source is measured, unclamp screw 20 fixed flat planar 21 and vibrating motor parts 7 are taken down, Chord vibration 5 being fixed on electricity with screw 20 shakes behind tuning fork head 19 tops, restarting the electricity tuning fork that shakes is the Chord vibration experiment instrument 1 of vibration wave source, the frequency and wavelength that compare vibration string 5 mutually can be proofreaded by two vibration wave source.
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| CN201410583642.9A CN104318830B (en) | 2014-10-27 | 2014-10-27 | String vibration speed measurement experimental instrument with double vibration wave sources and operation method thereof |
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| CN201410583642.9A CN104318830B (en) | 2014-10-27 | 2014-10-27 | String vibration speed measurement experimental instrument with double vibration wave sources and operation method thereof |
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| CN104318830A true CN104318830A (en) | 2015-01-28 |
| CN104318830B CN104318830B (en) | 2016-08-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1417027A1 (en) * | 1987-01-04 | 1988-08-15 | МГУ им.М.В.Ломоносова | Electromagnetically excited tuning fork |
| CN201331860Y (en) * | 2009-01-13 | 2009-10-21 | 乐培界 | Experimental apparatus of constant chord vibration research |
| CN201993212U (en) * | 2011-01-30 | 2011-09-28 | 德州学院 | String vibration tester |
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2014
- 2014-10-27 CN CN201410583642.9A patent/CN104318830B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1417027A1 (en) * | 1987-01-04 | 1988-08-15 | МГУ им.М.В.Ломоносова | Electromagnetically excited tuning fork |
| CN201331860Y (en) * | 2009-01-13 | 2009-10-21 | 乐培界 | Experimental apparatus of constant chord vibration research |
| CN201993212U (en) * | 2011-01-30 | 2011-09-28 | 德州学院 | String vibration tester |
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| CN104318830B (en) | 2016-08-17 |
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