CN209649176U - A kind of mute brill of ultrasonic wave - Google Patents
A kind of mute brill of ultrasonic wave Download PDFInfo
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- CN209649176U CN209649176U CN201821790754.1U CN201821790754U CN209649176U CN 209649176 U CN209649176 U CN 209649176U CN 201821790754 U CN201821790754 U CN 201821790754U CN 209649176 U CN209649176 U CN 209649176U
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Abstract
The utility model relates to ultrasonic wave special process fields, belong to wall body hole device, especially a kind of mute brill of ultrasonic wave, including a hand-held rack, the hand-held rack rear end is equipped with a motor, the output end of the motor is connected with main shaft, the front end of the main shaft is coaxially installed with a ultrasonic transducer, the front end of the ultrasonic transducer is stretched out by hand-held rack, the front end of the ultrasonic transducer is equipped with multistage amplitude transformer, the end of front end amplitude transformer is equipped with tool heads, and the ultrasonic transducer is connected with supersonic generator；The front end of the hand-held rack is equipped with an energy converter fixed frame, the ultrasonic transducer is installed in the energy converter fixed frame, the rear end of the energy converter fixed frame and main shaft are co-axially mounted, and energy converter fixed frame drives ultrasonic transducer to rotate synchronously under the action of main shaft；The ultrasonic transducer includes front shroud, piezoelectric ceramics and back shroud.
Description
Technical field
The utility model relates to ultrasonic wave special process fields, belong to wall body hole device, and especially a kind of ultrasonic wave is quiet
Sound bores.
Background technique
Impact drill is to process, the most commonly used wall tapping equipment in the fields such as building.Existing impact drill generally comprises
The beater mechanism of electric impact drill has dog and two kinds of ball-type.By taking ball-type electric impact drill as an example, structure include electric drill by
Moving plate, price fixing, steel ball etc..Moving plate is connected by screw thread with main shaft, and has 12 steel balls；Price fixing is fixed on casing using pin
On, and 4 steel balls are had, under thrust, 12 steel balls make carbide drill generate rotation punching along 4 steel ball rollings
Movement is hit, can be drilled on the fragile materials such as brick, building block, concrete.There is certain deficiency in use in above-mentioned apparatus,
Great noise and a large amount of dust can be generated, the operator in construction environment generates adverse effect to long-time.
To solve the above problems, some manufacturers have developed mute brill, drill bit is mostly passed through spring by the structure of existing mute brill
Flexible axle links to sound insulation treated power head, is flexible coupling with elasticity to obstruct the noise of power head sending, realizing reduces drilling
The effect of noise.But above-mentioned apparatus is bored compared to conventional impact in actual use, reduces the revolving speed of drill bit, therefore meeting
The efficiency for causing drilling to be cut is lower, and when applying in the harder concrete wall surface of quality, drill extremely difficult, Bu Nengman
Sufficient need of work.
Still it can guarantee that drilling efficiency can reduce the drilling equipment of construction site decibel again without a in market at present.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of structurally reasonable, drilling efficiency is high, has
Effect reduces construction sound, absorbs the mute brill of a kind of ultrasonic wave that dust is generated in work progress.
The technical scheme adopted by the utility model is that:
A kind of mute brill of ultrasonic wave, including a hand-held rack, the hand-held rack rear end are equipped with a motor, the motor
Output end connected with main shaft, it is characterised in that: the front end of the main shaft is coaxially installed with a ultrasonic transducer, the ultrasound
The front end of wave transducer is stretched out by hand-held rack, and the front end of the ultrasonic transducer is equipped with multistage amplitude transformer, most before
The end of end amplitude transformer is equipped with tool heads, and the ultrasonic transducer is connected with supersonic generator.
Moreover, the front end of the hand-held rack is equipped with a ultrasonic transducer fixed frame, which is fixed
The ultrasonic transducer is installed, the rear end of the ultrasonic transducer fixed frame and main shaft are co-axially mounted, in master in frame
Ultrasonic transducer fixed frame drives ultrasonic transducer to rotate synchronously under the action of axis.
Moreover, the ultrasonic transducer includes front shroud, piezoelectric ceramics and back shroud, the front shroud, piezoelectric ceramics and
Back shroud is sequentially arranged to install through screw rod and fix, and the electrode produced through the piezoelectric ceramics sends out ultrasonic transducer and ultrasonic wave
Raw device is connected.
Moreover, the front outer of the front shroud is integrally formed with connecting flange, by connecting flange by ultrasonic transducer
It installs and fixes with ultrasonic transducer fixed frame.
Moreover, the gas chamber of a sealing is produced in the hand-held rack on the outside of main shaft, the gas chamber and external mute dust suction
Device is connected, and produces the gas being connected to respectively in the middle part of the inner edge of the tool heads, multistage amplitude transformer, ultrasonic transducer and main shaft
Road, the end which is located at main shaft side are connected with gas chamber, which is located at end and the external environment of tool heads side
It is connected.
Moreover, the supersonic generator includes central control module, the central control module and a frequency adjust unit
Control terminal be connected, the signal output end that the frequency adjusts unit is connected with ultrasonic signal output unit, the ultrasound
Wave signal output unit is connected with ultrasonic transducer.
Moreover, being separately installed with frequency display unit and current displaing unit in the supersonic generator, the frequency is aobvious
Show that unit is connected with central control unit respectively with current displaing unit.
The advantages and positive effects of the utility model are as follows:
1, in the utility model, motor cooperation main shaft remains rotation system in the prior art, passes through ultrasonic wave transducer
Device cooperates supersonic generator and multistage amplitude transformer, and the substitution prior art forms a kind of new impact technology, and principle is ultrasound
Wave producer generates a high-frequency high-voltage signal function in ultrasonic transducer, and ultrasonic transducer turns supersonic frequency electric energy
It is changed to supersonic frequency mechanical energy, the mechanical oscillation of generation make multistage amplitude transformer using elastic hard material and carry out mechanical vibration
The amplification of width multistage, so that tool heads mechanical activation amplitude is sufficiently large, tool heads are with the speed per second for being more than or equal to 20,000 times to being applied
Object is impacted, is cut, is ground, and with " cavitation erosion " phenomenon, moment will be applied object become dust meet efficiently it is mute
Smash target design requirement.
2, in the utility model, transducing fixed frame and then drives super for realizing the connection of main shaft and ultrasonic transducer
The machinery tradition of sound wave transducing；Ultrasonic transducer uses front shroud, piezoelectric ceramics and back shroud form sandwich type structural, i.e. handle
Piezoelectric ceramic stack piece is clamped between two metal blocks, is ultrasonic wave transducer by clamping the prestressing force certain to piezoelectric material
Device is unlikely to when working by hightension；Piezoelectric ceramics adds an external electric field, in this electric field as piezo-electric crystal on piezo-electric crystal
Under effect, piezo-electric crystal internal electrode state can occur to change accordingly, generate the strain directly proportional to electric field strength
Phenomenon, this phenomenon are known as inverse piezoelectric effect.Piezo-electric crystal can convert electric energy to mechanical energy by inverse piezoelectric effect.
3, in the utility model, the effect of gas chamber is for air flue to be connected with external mute dust collector, and air flue is located at
End in tool heads is connected with external construction environment, therefore, in the construction process, the dust that work progress can be generated
Along air flue and gas chamber sucking mute dust collector, to realize the design requirement of dustless construction, optimize site operation environment.
4, in the utility model, the central control module installed in supersonic generator sends out ultrasonic wave as hollow unit
Raw device control effectively, and adjusting unit through overfrequency can control the supersonic frequency electricity of ultrasonic signal output unit output
The frequency of energy, frequency display unit and current displaing unit are then used to show the real-time frequency of supersonic generator and electric current
Show, carries out necessary adjustment and control convenient for operator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the module diagram of the utility model；
Fig. 3 is the structural schematic diagram of ultrasonic transducer part in the utility model；
Fig. 4 is the structural schematic diagram of mechanical transmission structure in the utility model.
After 1 connector, 2 fore bearing, 3 ultrasonic transducer, 4 plane bearing, 5 ultrasonic transducer fixed frame, 6 gas chamber 7
31 front shroud of bearing 8 motor cabinet, 9 motor, 10 shaft coupling, 11 air entry, 12 tool heads, 13 second level amplitude transformer, 32 screw rod 33
34 back shroud of piezoelectric ceramics
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and it is not limited that following embodiments, which are illustrative,
, the protection scope of the utility model cannot be limited with following embodiments.
1, the embodiments of the present invention:
A kind of mute brill of ultrasonic wave, including a hand-held rack, the hand-held rack rear end are equipped with a motor, the motor
Output end connected with main shaft by shaft coupling, the innovation of the utility model is, the front end of the main shaft is coaxially installed with
The front end of one ultrasonic transducer, the ultrasonic transducer is stretched out by hand-held rack, the front end of the ultrasonic transducer
Multistage amplitude transformer is installed, the end of front end amplitude transformer is equipped with tool heads, and the ultrasonic transducer and ultrasonic wave occur
Device is connected.
In the present embodiment, the front end of the hand-held rack is equipped with a ultrasonic transducer fixed frame, the ultrasonic wave transducer
The ultrasonic transducer is installed, the rear end of the ultrasonic transducer fixed frame and main shaft are coaxially pacified in device fixed frame
Dress, ultrasonic transducer fixed frame drives ultrasonic transducer to rotate synchronously under the action of main shaft.
In the present embodiment, the ultrasonic transducer includes front shroud, piezoelectric ceramics and back shroud, the front shroud, piezoelectricity
Ceramic and back shroud is sequentially arranged to install through screw rod and fix, and the electrode produced through the piezoelectric ceramics is by ultrasonic transducer and surpasses
Sonic generator is connected, and level-one amplitude transformer is integrally produced in the front end of the front shroud, and the front end of the level-one amplitude transformer is set
It is equipped with connector, the connector is used for and second level amplitude transformer；The front outer of the front shroud is integrally formed with connecting flange, leads to
Connecting flange is crossed to fix ultrasonic transducer and the installation of ultrasonic transducer fixed frame.
In the present embodiment, the multistage amplitude transformer preferably uses two-stage complex horn, i.e. level-one amplitude transformer and second level
Amplitude transformer is installed.
In the present embodiment, the material that tool heads part uses is tungsten-cobalt series hard alloy, belongs to high density material, alloy work
The Rockwell hardness number for having head is 92.
In the present embodiment, the gas chamber of a sealing is produced in the hand-held rack on the outside of main shaft, the gas chamber is quiet with outside
Sound dust catcher is connected, the company of producing respectively in the middle part of the inner edge of the tool heads, multistage amplitude transformer, ultrasonic transducer and main shaft
Logical air flue, the end which is located at main shaft side are connected with gas chamber, and the end which is located at tool heads side is formed with
Air entry, the air flue are connected through the air entry with external environment.
In the present embodiment, the supersonic generator includes central control module, the central control module and a frequency tune
The control terminal of section unit is connected, and the signal output end that the frequency adjusts unit is connected with ultrasonic signal output unit,
The ultrasonic signal output unit is connected with ultrasonic transducer.
In the present embodiment, frequency display unit and current displaing unit are separately installed in the supersonic generator, it should
Frequency display unit is connected with central control unit respectively with current displaing unit.
In the present embodiment, it is set with fore bearing in the outer rim of energy converter fixed frame, is set with plane axis in the middle part of main shaft outer rim
It holds, rear bearing is set with outside the main shaft outer rim of coupling front end.
In the present embodiment, the mute dust collector includes filter element, vacuum chamber, silent pump and dust storage chamber, described mute
Pump is connected with vacuum chamber, and the inlet end of the vacuum chamber is connected through filter element with playing, and the vacuum chamber is connected to dust storage chamber
Installation.In the present embodiment, a control panel is installed, the signal output end of the control panel is in the supersonic generator
Centre control unit is connected.
2, in relation to the design of amplitude transformer:
Resonant length l, magnification M p, form factor φ, displacement node Xo, input power impedance Z i and the bending of amplitude transformer
What the parameters such as stiffness were described.Wherein magnification M p refers to that amplitude transformer works in resonant frequency, output end and input terminal
Particle displacement or speed ratio；Form factor φ be measure amplitude transformer attainable maximum velocity index it
One, it is only related with the geometry of amplitude transformer, and φ value is bigger, is also got over by the attainable maximum velocity of amplitude transformer institute
Greatly, if the φ value of prismatic member is 1, the φ value of amplitude transformer is commonly used all close to 3, certain special shape amplitude transformers, φ value is reachable
To 5 or so；Input power impedance Z i is defined as the plural ratio of input terminal driving force and Particle Vibration Velocity.In practical applications often
The amplitude for often requiring input mechanical impedance to change with the variation of frequency and load wants small；Bending stifiness is bending inverse flexible,
Bending stifiness is also related with the geometry of amplitude transformer.Amplitude transformer is longer, and bending flexibility is bigger, and when practical application will avoid.
Above-mentioned each performance parameter of amplitude transformer is determined according to compressional vibration wave equation, the area function of bar and boundary condition
's.
Since this equipment is mainly used in metope punching or some hard materials, belongs to high-intensitive application, be often required to
Ask amplitude transformer end that there is very big amplitude, this requires the form factor φ of amplitude transformer and magnification M p values all as far as possible
Greatly, if selecting single amplitude transformer, often there is this that excellent bad phenomenon in its φ value and Mp value, is difficult the two and takes into account.In order to change
Become this situation, must just be covered the shortage in the form of complex horn to improve its output performance.It is computed, finally
Two-stage complex horn is selected, level-one amplitude transformer uses quarter-wave using quarter-wave index, second level amplitude transformer
Long cross-section design.
3, in relation to the design of ultrasonic transducer:
The packing forms of ultrasonic transducer use sandwich, i.e., piezoelectric ceramic stack piece be clamped in two metal blocks it
Between, by clamping the prestressing force certain to piezoelectric material, it is unlikely to when being ultrasonic transducer work by hightension, main portion
Front and rear cover plate, prestressing force screw rod that part is produced by piezoelectric ceramics, metal material etc. form.
Wherein, piezoelectric material is one of the important link for developing piezoelectric supersonic wave transducer, currently used piezoelectric ceramics
Material point three is unicomponent system: barium titanate, lead titanates, potassium niobate, inclined potassium niobate etc.；Binary system: lead zirconate titanate and its series,
Potassium-sodium niobate, lead meta-columbute barium etc.；Ternary system: niobium magnesium-lead zirconate-titanate, niobium zinc-lead zirconate-titanate, niobium manganese-lead zirconate-titanate etc.,
According to the maximum power of this equipment, operating current, operating voltage and uninterrupted working time these parameters select the zirconium of binary system
Lead titanates Series Piezoelectric ceramic making ultrasonic transducer.
This equipment ultrasonic transducer piezoelectric ceramics is made of four piezoelectric ceramic rings, using mechanical string between piezoelectric chip
Connection, the method for electric end parallel connection connect, the polarization direction of adjacent two panels on the contrary, to guarantee that piezoelectric ceramic energy in concert with vibrates,
Between chip and between chip and metal cover board, use beryllium-bronze piece as electrode, with a thickness of 0.5mm, screw rod and chip it
Between, insulating sleeve is used, in order to avoid high voltage arc.Front and rear cover plate uses Ti-Al alloy material, and mating surface will be ground, in order to protect
Good mechanical couplings are demonstrate,proved, screw rod need to be made of high strength bolting steel, and tensile strength is in 80kg/mm2(1kg/mm2=9.8MPa),
Screw thread uses circular arc type.
For different application ranges, different front cover plate shapes can be designed, such as: taper, exponential type, step type, trapezoidal
Less Deng the variation of, back shroud, typically cylindrical rearward end adds chamfering.According to the application of this equipment, energy accumulating
Onto the area of very little.Using front shroud as prime radiation head, since large-power supersonic transducer often requires that power is close
Degree is high, and or so 2 to 3 hours of working time, front shroud must also in addition to the Ti-Al alloy material that fatigue resistance must be selected good
It must the small shape of selection mechanical loss, i.e. selection exponential type front shroud.
4, in relation to the design of supersonic generator:
Supersonic generator is also referred to as ultrasonic-frequency power supply, it is a kind of to generate and provide supersonic frequency electricity to ultrasonic transducer
The device of energy.According to used working principle, supersonic generator can be divided into analog circuit and digital circuit two major classes.
Analog circuit supersonic generator is divided into oscillation-scale-up version and two kinds of inverse type again.
Analog circuit is selected in, based on oscillation-scale-up version, this analogue type supersonic generator mainly includes vibration
Swing device, amplifier, match circuit and frequency automatic tracing.
The effect of oscillator is the signal for generating a certain frequency, to push subsequent amplifier section.It can be
One independent oscillator is also possible to a feedback network.Traditionally, former is called independent-excited supersonic generator,
Latter is known as auto-excitation type supersonic generator.The supersonic oscillations frequency that independent-excited generates is more stable, and can be wider
It is adjusted in frequency range.Auto-excitation type has the advantages of simple structure and easy realization chases after frequency automatically, according to the load properties of this equipment, has biggish
Frequency fluctuation, it is more demanding to frequency is chased after automatically, therefore select independent-excited oscillator.
The effect of amplifier is that oscillator signal is amplified to required level.This equipment uses integrated power amplifier, can incite somebody to action
The harmonic distortion of system drops to ten thousand/and it is several, greatly improve the quality of supersonic generator.
Match circuit chases after frequently with automatic, and an important difference of supersonic generator and general amplifying circuit is its
With circuit part, the impedance that involves of the matching between general amplifier and load is converted, and supersonic generator and load
Between matching other than impedance transformation, there are also a critically important content --- the reactance component of certain value is selected in tuning,
It is allowed in working frequency and the reactive component resonance in load.It is whole after only having carried out impedance transformation and tuning at the same time
A system has just reached matching at last, and ultrasonic transducer just can work normally.Many times, ultrasonic transducer is to use
In the occasion that load change is violent, even if under the condition of more stable load, ultrasonic transducer (and matched use
Amplitude transformer, tool heads) parameter as the reasons such as fever, aging, abrasion, fatigue and change, these can all make
The resonance frequency for obtaining ultrasonic transducer changes.If the frequency of supersonic generator does not become therewith, ultrasonic transducer will
Work is in detuning state, and mechanicalness noise can also increase therewith, and head amplitude can also decline, and reduces working efficiency or even failure of oscillation.
Therefore, it is necessary to take measures that the frequency of oscillation of supersonic generator is made to do corresponding change with the resonance frequency of ultrasonic transducer
Change, to guarantee that ultrasonic transducer always works in resonant state.
By practice find realize frequency automatic tracing method be phase locking technique, when ultrasonic transducer resonance and with ultrasound
When wave producer matches, input characteristics is equivalent to a pure resistance, at this point, being added on voltage and current in phase thereon.Once
Ultrasonic transducer resonance frequency changes, and a phase difference is just had between this voltage and electric current, the principle of phase locking technique is exactly to examine
The size and symbol for measuring this phase difference are formed a closed-loop system, are made phase with this deviation signal de-regulation oscillator frequency
Potential difference reduces, until being locked in above freezing.
Claims (7)
1. a kind of mute brill of ultrasonic wave, including a hand-held rack, the hand-held rack rear end is equipped with a motor, the motor
Output end is connected with main shaft, it is characterised in that: the front end of the main shaft is coaxially installed with a ultrasonic transducer, the ultrasonic wave
The front end of energy converter is stretched out by hand-held rack, and the front end of the ultrasonic transducer is equipped with multistage amplitude transformer, front end
The end of amplitude transformer is equipped with tool heads, and the ultrasonic transducer is connected with supersonic generator.
2. the mute brill of a kind of ultrasonic wave according to claim 1, it is characterised in that: the front end of the hand-held rack is equipped with
One energy converter fixed frame is equipped with the ultrasonic transducer, the rear end of the energy converter fixed frame in the energy converter fixed frame
Portion and main shaft are co-axially mounted, and energy converter fixed frame drives ultrasonic transducer to rotate synchronously under the action of main shaft.
3. the mute brill of a kind of ultrasonic wave according to claim 2, it is characterised in that: the ultrasonic transducer includes front cover
Plate, piezoelectric ceramics and back shroud, the front shroud, piezoelectric ceramics and back shroud are sequentially arranged to install through screw rod and fix, through the pressure
Ultrasonic transducer is connected by the electrode that electroceramics is produced with supersonic generator.
4. the mute brill of a kind of ultrasonic wave according to claim 3, it is characterised in that: the front outer one of the front shroud
It is formed with connecting flange, is fixed energy converter and the installation of energy converter fixed frame by connecting flange.
5. the mute brill of a kind of ultrasonic wave according to claim 1, it is characterised in that: in the hand-held rack on the outside of main shaft
The gas chamber of a sealing is produced, which is connected with external mute dust collector, in the tool heads, multistage amplitude transformer, ultrasound
The air flue being connected to is produced respectively in the middle part of wave transducer and the inner edge of main shaft, and the end which is located at main shaft side is connected with gas chamber
Logical, the end which is located at tool heads side is connected with external environment.
6. the mute brill of a kind of ultrasonic wave according to claim 1, it is characterised in that: the supersonic generator includes center
The control terminal that control module, the central control module and a frequency adjust unit is connected, and the frequency adjusts the signal of unit
Output end is connected with ultrasonic signal output unit, which is connected with ultrasonic transducer.
7. the mute brill of a kind of ultrasonic wave according to claim 6, it is characterised in that: pacify respectively in the supersonic generator
Equipped with frequency display unit and current displaing unit, the frequency display unit and current displaing unit are respectively and central control unit
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821790754.1U CN209649176U (en) | 2018-11-01 | 2018-11-01 | A kind of mute brill of ultrasonic wave |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821790754.1U CN209649176U (en) | 2018-11-01 | 2018-11-01 | A kind of mute brill of ultrasonic wave |
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| CN209649176U true CN209649176U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176913A (en) * | 2018-11-01 | 2019-01-11 | 王玉鹏 | A kind of mute brill of ultrasonic wave |
-
2018
- 2018-11-01 CN CN201821790754.1U patent/CN209649176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176913A (en) * | 2018-11-01 | 2019-01-11 | 王玉鹏 | A kind of mute brill of ultrasonic wave |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210210 Address after: Room 503, gate 2, building 12, huayuanli, Zhongxin Road, Tanggu District, Binhai New Area, Tianjin 300450 Patentee after: Wang Pinheng Address before: 300352 No.5, donggouyan, gegu Town, Jinnan District, Tianjin Patentee before: Wang Yupeng |
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| TR01 | Transfer of patent right |