CN104318824A - String vibration speed measurement experiment instrument with vibration motor as wave source - Google Patents
String vibration speed measurement experiment instrument with vibration motor as wave source Download PDFInfo
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- CN104318824A CN104318824A CN201410583279.0A CN201410583279A CN104318824A CN 104318824 A CN104318824 A CN 104318824A CN 201410583279 A CN201410583279 A CN 201410583279A CN 104318824 A CN104318824 A CN 104318824A
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
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Abstract
The invention provides a string vibration speed measurement experiment instrument with a vibration motor as a wave source. The string vibration speed measurement experiment instrument with the vibration motor as the wave source aims to solve the technical problems that according to an existing string vibration experiment instrument, an equipment structure is complicated, manufacturing cost is high, a dead zone exists during an experiment, the experiment efficiency is low, and the demonstration effect is poor. 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 a supporting stand column through a fixing flat plate. The vibration motor is installed in the vibration motor assembly. An eccentric block is installed on the right side of an outer rotating shaft of the vibration motor. A speed measurement disk and a photoelectric door are installed on the left side of the 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 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 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. According to the string vibration speed measurement experiment instrument with the vibration motor as the wave source, 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, high 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, provide the Chord vibration speedometer that a kind of novel vibrating motor is wave source.
For achieving the above object, the present invention adopts following technical proposals: vibrating motor is the Chord vibration speedometer of wave source, comprise experiment instrument main body, be provided with base (2) in the bottom of described experiment instrument main body, base (2) supports fixing with fixed flat planar (28) by support post (1).Above-mentioned experiment instrument main body is provided with vibrating motor parts (7), and vibrating motor parts (7) are arranged on the top of fixed flat planar (28).Above-mentioned column (1) single-point support fixed flat planar (28) is also fixed with screw (27).In described vibrating motor parts (7), be provided with vibrating motor (10), vibrating motor (10) is fixed on fixed flat planar (28) by vibrating motor fixed mount (9).The right side of described vibrating motor (10) outer shaft (11) is provided with eccentric block (8); The left side of outer shaft (11) is provided with tachometer disc (12) and photoelectricity door (13).The extension line (14) of above-mentioned vibrating motor (10) is connected with one end of binding post (15); The other end of binding post (15) is connected with direct supply knotmeter (17) by inlead (16).In the left side of described base (2), direct supply knotmeter (17) is installed, direct supply knotmeter (17) is provided with voltage regulation and frequency modulation power supply (18) and vibration vibrating motor knotmeter (26).Above-mentioned voltage regulation and frequency modulation power supply (18) is provided with voltage regulation and frequency modulation switch (19), power switch (20), tap changer (21) and frequency modulation switch (22).Described vibrating motor knotmeter (26) is provided with to electric switch (23), speed switch (24) and frequency switching (25).Be fastenedly connected by trip bolt (6) with vibration string (5) in the middle of the right side edge of above-mentioned fixed flat planar (28).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.Single-point support fixed flat planar is adopted 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.
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 right side on base and be provided with direct supply knotmeter, 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, and elasticity, toughness, wearing quality, hardness, corrosion stability are good, and processibility and experimental etc. is all better than prior art.
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 is the Chord vibration speedometer of wave source, comprises experiment instrument main body, is provided with base 2 in the bottom of described experiment instrument main body, and base 2 supports fixing with fixed flat planar 28 by support post 1.Above-mentioned experiment instrument main body is provided with vibrating motor parts 7, and vibrating motor parts 7 are arranged on the top of fixed flat planar 28.Above-mentioned column 1 single-point support fixed flat planar 28 is also fixed with screw 27.In described vibrating motor parts 7, be provided with vibrating motor 10, vibrating motor 10 is fixed on fixed flat planar 28 by vibrating motor fixed mount 9.The right side of described vibrating motor 10 outer shaft 11 is provided with eccentric block 8; The left side of outer shaft 11 is provided with tachometer disc 12 and photoelectricity door 13.The extension line 14 of above-mentioned vibrating motor 10 is connected with one end of binding post 15; The other end of binding post 15 is connected with direct supply knotmeter 17 by inlead 16.In the left side of described base 2, direct supply knotmeter 17 is installed, direct supply knotmeter 17 is provided with voltage regulation and frequency modulation power supply 18 and motor speed measuring instrument 26.Above-mentioned voltage regulation and frequency modulation power supply 18 is provided with voltage regulation and frequency modulation switch 19, power switch 20, tap changer 21 and frequency modulation switch 22.Described vibrating motor knotmeter 26 is provided with to electric switch 23, speed switch 24 and frequency switching 25.Be fastenedly connected with vibration string 5 trip bolt 6 in the middle of the right side edge of above-mentioned fixed flat planar 28.Above-mentioned vibration string 5 connects counterweight 3 through angle sheave 4, and angle sheave 4 is fixed on laboratory table.
Vibrating motor parts 7 are housed above described support post 1 single-point support, vibrating motor parts 7 vibration frequency changes by direct supply knotmeter 17 and measures.
Described fixed flat planar 28, vibrating motor fixed mount 9, vibrating motor parts 7 shell all adopts TPU to make.Base 2 and support post 1 adopt cast iron or plank to make.Eccentric block 8 adopts Cu or Fe to make.
Described voltage regulation and frequency modulation power supply 18, vibrating motor knotmeter 26 adopt machine.
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 is made up of additional eccentric block 8, 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 the supply voltage of direct supply knotmeter 17, 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 the both end voltage of vibrating motor 10 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 tachometer disc 12 to rotate, and tach signal is delivered to motor speed measuring instrument 26 by photoelectricity door 13 by extension line 14, binding post 15, inlead 16 and records and show vibrating motor 10 rotating speed and frequency by tachometer disc 12 rotating speed.The vibration frequency that vibration string 5 vibration frequency can be wave source by measuring vibrations motor 10 obtains.
Method of operating:
During use, first to press to close to the power switch 20 of the voltage regulation and frequency modulation power supply 18 on direct supply knotmeter 17 before Chord vibration and connect electricity, turn tap changer 21 pressure regulation, after supply voltage is determined, press voltage regulation and frequency modulation switch 19, be energized to vibrating motor parts 7, the vibrating motor parts of single-point support fixed flat planar are adopted to be that wave source starts vibration, turn frequency modulation switch 22, change vibrating motor parts 7 vibration frequency, vibrating motor 10 rotating speed is determined by the speed switch 24 of vibrating motor knotmeter 26, vibrating motor vibration frequency is determined again by frequency switching 25.Vibrating motor 10 vibrates and drives vibrating motor parts 7 to vibrate, then drives fixed flat planar 28 to vibrate, then drives vibration string 5 to vibrate.Turn tap changer 21 can change voltage regulation and frequency modulation power supply 18 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 28 vibration frequency and amplitude can be changed, change vibration string 5 vibration frequency and amplitude again, on the left of being driven by the rotation of vibrating motor 10 outer shaft 11, tachometer disc 12 is installed and rotates.Tach signal is delivered to motor speed measuring instrument 26 by photoelectricity door 13 by extension line 14, binding post 15 and inlead 16 and records and show vibrating motor 10 rotating speed and frequency by tachometer disc 12 rotating speed.The vibration frequency that Chord vibration 5 vibration frequency can be wave source by measuring vibrations motor 10 obtains.
Claims (6)
1. vibrating motor is the Chord vibration speedometer of wave source, comprise experiment instrument main body, it is characterized in that: be provided with base (2) in the bottom of described experiment instrument main body, base (2) supports fixing with fixed flat planar (28) by support post (1), above-mentioned experiment instrument main body is provided with vibrating motor parts (7), vibrating motor parts (7) are arranged on the top of fixed flat planar (28), above-mentioned column (1) single-point support fixed flat planar (28) is also fixed with screw (27), in described vibrating motor parts (7), vibrating motor (10) is installed, vibrating motor (10) is fixed on fixed flat planar (28) by vibrating motor fixed mount (9), the right side of described vibrating motor (10) outer shaft (11) is provided with eccentric block (8), the left side of outer shaft (11) is provided with tachometer disc (12) and photoelectricity door (13), the extension line (14) of above-mentioned vibrating motor (10) is connected with one end of binding post (15), the other end of binding post (15) is connected with direct supply knotmeter (17) by inlead (16), in the left side of described base (2), direct supply knotmeter (17) is installed, direct supply knotmeter (17) is provided with voltage regulation and frequency modulation power supply (18) and vibrating motor knotmeter (26), above-mentioned voltage regulation and frequency modulation power supply (18) is provided with voltage regulation and frequency modulation switch (19), power switch (20), tap changer (21) and frequency modulation switch (22), described vibrating motor knotmeter (26) is provided with to electric switch (23), speed switch (24) and frequency switching (25), 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 (28), 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 is the Chord vibration speedometer of wave source, it is characterized in that: it is vibration wave source that vibrating motor parts (7) are equipped with in described support post (1) single-point support and top, vibrating motor parts (7) vibration frequency is changed by direct supply knotmeter (17) and measures.
3. vibrating motor according to claim 1 is the Chord vibration speedometer of wave source, it is characterized in that: described fixed flat planar (28), vibrating motor fixed mount (9) and vibrating motor parts (7) shell adopt TPU to make; Base (2) and support post (1) adopt cast iron or plank to make; Eccentric block (8) adopts Cu or Fe to make.
4. vibrating motor according to claim 1 is the Chord vibration speedometer of wave source, it is characterized in that: described voltage regulation and frequency modulation power supply (18) and vibrating motor knotmeter (26) adopt machine.
5. vibrating motor according to claim 1 is the Chord vibration speedometer of 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 is the method for operating of the Chord vibration speedometer of wave source, is realized by following step:
First to press to close to the power switch (20) of the voltage regulation and frequency modulation power supply (18) on direct supply knotmeter (17) before Chord vibration and connect electricity, turn tap changer (21) pressure regulation, after supply voltage is determined, press voltage regulation and frequency modulation switch (19), be energized to vibrating motor parts (7), the vibrating motor parts of single-point support fixed flat planar are adopted to be that wave source starts vibration, turn frequency modulation switch (22), change vibrating motor parts (7) vibration frequency, vibrating motor (10) rotating speed is determined by the speed switch (24) of motor speed measuring instrument (26), vibrating motor vibration frequency is determined again by frequency switching (25), vibrating motor (10) vibration drives vibrating motor parts (7) vibration, fixed flat planar (28) is driven to vibrate again, drive vibration string (5) vibration again, turn tap changer (21) can change voltage regulation and frequency modulation power supply (18) 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 (28) vibration frequency and amplitude can be changed, change vibration string (5) vibration frequency and amplitude again, rotate to drive on left side by vibrating motor (10) outer shaft (11) and tachometer disc (12) rotation is installed, tachometer disc (12) rotating speed by photoelectricity door (13) by extension line (14), tach signal is delivered to vibrating motor knotmeter (26) record and shows vibrating motor (10) rotating speed and frequency by binding post (15) and inlead (16), the vibration frequency that Chord vibration (5) vibration frequency is wave source by measuring vibrations motor (10) obtains.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410583279.0A CN104318824B (en) | 2014-10-27 | 2014-10-27 | Vibrating motor is Chord vibration speedometer and the operational approach thereof of wave source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410583279.0A CN104318824B (en) | 2014-10-27 | 2014-10-27 | Vibrating motor is Chord vibration speedometer and the operational approach thereof of wave source |
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| Publication Number | Publication Date |
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| CN104318824A true CN104318824A (en) | 2015-01-28 |
| CN104318824B CN104318824B (en) | 2016-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652678A (en) * | 2016-11-07 | 2017-05-10 | 南京理工大学 | Teaching demonstration device based on vibration dynamics |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202711540U (en) * | 2012-07-19 | 2013-01-30 | 四川理工学院 | Experimental teaching aid for demonstrating determinants of inherent frequency of upper standing wave of chord wire |
Family Cites Families (1)
| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202711540U (en) * | 2012-07-19 | 2013-01-30 | 四川理工学院 | Experimental teaching aid for demonstrating determinants of inherent frequency of upper standing wave of chord wire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652678A (en) * | 2016-11-07 | 2017-05-10 | 南京理工大学 | Teaching demonstration device based on vibration dynamics |
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