CN2120842U

CN2120842U - Adhesive vibrator

Info

Publication number: CN2120842U
Application number: CN 92212748
Authority: CN
Inventors: 王海清
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-28
Filing date: 1992-04-28
Publication date: 1992-11-04

Abstract

The utility model relates to an attaching vibrator which is composed of a vibrating body and a circuit. The attaching vibrator is characterized in that the vibrating body is composed of an iron core, a coil, an armature iron, a spring and a base; the spring is a Q-shaped leaf spring with variable sections; the circuit is provided with a power recovery circuit and an oscillation control circuit. Thus, the utility model has the characteristics of small size, light weight, convenient operation, high efficiency, good cement tightness and obvious energy saving effect.

Description

Adhesive vibrator

The utility model relates to the closely knit facility of a kind of build concrete, specifically be meant flat-plate vibrator.

Traditional concrete compaction facility are rotary, and it makes the execution unit vibration by the eccentric crop rotation circular motion of driven by motor, and existing plate vibrator is exactly this structure.Its volume is big, Heavy Weight, need three phase mains, give to carry with the building site operation and bring great inconvenience, owing to be to adopt the eccentric vibration that rotatablely moves and produce, frequency is a power frequency electricity frequency, its vibration frequency is low, the power consumption height, efficient is low, though also the someone imagines the vibration of employing electromagnetic type, but poor practicability is difficult to reach practical function.

The purpose of this utility model just provides and a kind ofly converts mechanical oscillation again to after alternating current is changed into DC pulse, is useful for the form vibrator of the required practical frequency of cement concrete, and it is simple in structure, and is easy to operate, low in energy consumption, the efficient height.

Solution of the present utility model is: be made of vibrating body and circuit two parts, wherein vibrating body comprises armature, iron core, coil and spring, coil is contained on the iron core, between iron core and the armature spring is housed, power supply is by rectification, filtering and on-off circuit are given coil power supply, wherein spring is equipped with at the iron core and the two ends of spreading out between the iron respectively, and be variable cross-section Ω matrix spring, the cross section minimum at couple zero point, iron core is packed on the base, the Power Recovery circuit is housed between load RL and filter circuit, between load and on-off circuit oscillation control circuit is housed, its detailed content is described below referring to accompanying drawing:

Referring to Fig. 1, Fig. 2, form vibrator of the present utility model is to be made of vibrating body and circuit two parts, wherein vibrating body comprises armature (3), iron core (4), coil (5) and spring (6), coil (5) is contained on the iron core (4), between iron core (4) and the armature (3) spring (6) is housed, power supply A is by rectification B, filtering C and on-off circuit D give coil (5) power supply, thereby formation electromagnet---spring vibration device, feature of the present utility model is that spring (6) is equipped with at the two ends between iron core (4) and the armature (3) respectively, be used for supporting armature (3) on the one hand, starting of oscillation action usefulness on the other hand, spring (6) be a variable cross-section Ω matrix spring, designs by equal strength, the cross section minimum at couple zero point, through testing the spring of determining to adopt said structure, it is low to be permitted stress, rigidity is big, and fatigue resistance is strong, connect reliably, thereby guarantee that vibration performance is reliable.Iron core (4) is packed on the base (1), thereby constitutes vibrating body, and Power Recovery circuit F is housed between load RL and filter circuit C, works as on-off circuit

When closing, to filter circuit C, obtain a Power Recovery this moment to the freewheel current on the load RL, has energy-saving effect through Power Recovery circuit F, simultaneously also check the time-delay of electric current in the load, the output that has further improved vibration force.At load RL and on-off circuit

Between oscillation control circuit is housed, when the vibration on the load RL changed, promptly voltage changed, and by oscillation control circuit original frequency of oscillation was changed, and made channel frequency be synchronized with the mechanical oscillation frequency all the time.Guarantee that load has and vibrate power output efficiently, satisfy the vibration performance requirement.Content of the present utility model further describes as follows:

The bottom surface in the cross section of iron core of the present utility model (4) when being parallel to the bottom surface above the iron core (4), is a kind of vibrator with respect to the top certain angle that can parallelly also can tilt, and carries out closely knit to vibratory concrete.When the bottom surface in the cross section of iron core (4) with respect to last face tilt certain angle, be another kind of vibrator, existing vibration has the pushing effect again to concrete.In circuit of the present utility model, be connected to commentaries on classics at the two ends of load RL and tear diode open

Constitute Power Recovery F to filter circuit C, work as on-off circuit

When closing, diode is torn in load RL, commentaries on classics open

Constitute the loop with filter circuit, the afterflow in the load can be reclaimed on filter circuit C.Oscillation control circuit of the present utility model is by feedback signal G, operational amplification circuit H, integrating circuit I, signal generator J, 4 frequency dividing circuit K and power amplifier L constitute, its structure is that the feedback signal G that is connected with load RL is connected with the input of operational amplification circuit H, its output is connected with the input of integrating circuit I to signal generator J, the output of signal generator J is connected with 4 frequency dividing circuit K in turn, and power amplification circuit L is to on-off circuit

Input, at ordinary times, power supply is supplied with signal generator J voltage makes it produce vibration, 4 frequency dividing circuit K are divided into 1/4 cycle square-wave pulse with frequency and deliver to power amplifier and amplify, and supply with on-off circuit at last

It is turned on and off.Feedback signal G from load RL delivers to operational amplifier H, adjusts the vibration frequency that changes signal generator J through integrating circuit I.

The form vibrator that the utility model provides has saved a motor, the electric and magnetic oscillation that is provided by the 220V power supply has replaced the vibration that eccentric crop rotation circular motion produces, make volume little, in light weight, easy to operate, especially improved vibration frequency, the activity of cement is good, compactness is improved, and has also just improved the quality of cement products.Reliability greatly improves simultaneously, and fault reduces, and remarkable energy saving effect is arranged.

Accompanying drawing has been represented specific embodiments of the present utility model.

At first accompanying drawing is described:

Fig. 1 represents the structure chart of vibrating body;

Fig. 2 indication circuit theory diagram;

Fig. 3 representative circuit schematic;

Fig. 4 represents the current waveform exported in the load;

Fig. 5 represents the voltage waveform of control circuit output.

According to embodiment shown in the drawings, the structure of vibrating body: coil (5) is housed on the iron core (4) between iron core (4) and armature (3) two ends, spring (6) is housed by screw (2), spring (6) is a variable cross-section Ω matrix spring, the cross section at couple zero point is minimum, and iron core (4) is packed on the base (1).The structure and the principle of circuit part are: 50HZ, 220V power supply A are by 4 * D ₁The bridge rectifier B that constitutes is by capacitor C ₁And C ₂Be added to the on-off circuit that triode 1T constitutes to triode 2T through load RL after the filtering

, triode 1T, 2T are by pulse transformer BT ₂Terminal 1,2,3 is supplied with synchronizing signal and is turned on and off.When 1T and the conducting of 2T pipe, electric current flows through load RL, the waveform of electric current as shown in Figure 5, vibrating body is produced to shake, be that iron core (4) drives base (1) generation vibration under the elastic force acting in conjunction of magnetic force under armature (3) effect and spring (10), when 1T and 2T pipe are closed: the afterflow on the load RL, tear diode open by commentaries on classics

₂* 2 at filter capacitor C ₁And C ₂On obtain a Power Recovery.In oscillation control circuit, power supply A, transformer BT ₁, rectification D ₃, filter capacitor C ₄, C ₅With voltage stabilizing CW supply control circuit voltage, divider resistance R ₄, R ₅Tell a reference voltage and supply with the signal generator J generation vibration that is made of pressure oscillator CD, 4 frequency dividing circuit K are that double D trigger 2D is divided into 1/4 cycle square wave with vibration frequency, and power amplifier BG is delivered in pulse ₁, voltage waveform as shown in Figure 4, through pulse transformer BT ₂Coupling is supplied with opening and closing of 1T, 2T pipe by end 1,2,3.Feedback signal G on the load RL is by R ₁And X ₁Voltage signal on the end passes through R ₉Deliver to operational amplifier BG ₂, by integrating capacitor C ₆And resistance R ₉, through R ₆Adjust R ₄, R ₅Dividing potential drop matter, thereby change the frequency of voltage controlled oscillator CD.R among Fig. 3 ₂, R ₃The piezoresistance that exceeds, R ₁₀And C ₇Constitute the natural oscillation circuit of CD oscillator, R ₈Be current-limiting resistance, D ₄Be speed stream diode, C ₃1T and 2T pipe are shielded.

Claims

1, a kind of form vibrator, be to constitute by vibrating body and circuit two parts, wherein vibrating body comprises armature, iron core, coil, spring, coil is contained on the iron core, between iron core and the armature spring is housed, power supply is by rectification, filtering and on-off circuit are given coil power supply, feature of the present utility model is that spring (6) is equipped with at the two ends between iron core (4) and the armature (3) respectively, and be variable cross-section Ω matrix spring, the cross section minimum at couple zero point, iron core (4) is packed on the base (1), and Power Recovery circuit F is housed between load RL and filter circuit C, between load RL and on-off circuit D oscillation control circuit is housed.

2, form vibrator according to claim 1, the cross section bottom that it is characterized in that iron core (4) is with respect to the top certain angle that can parallelly also can tilt.

3, attached oscillating device according to claim 1 is characterized in that being connected to commentaries on classics at the two ends of load RL tears diode open

Constitute Power Recovery to filter circuit C.

4, form vibrator according to claim 1, it is characterized in that oscillation control circuit is by feedback signal G, operational amplification circuit H, integrating circuit I, signal generator J, 4 frequency dividing circuit K power amplifier L constitute, its structure is that the feedback signal G that is connected with load RL is connected with the input of operational amplification circuit H, its output is connected with the input of integrating circuit I to signal generator J, and the output of signal generator J is connected with 4 frequency dividing circuit K, power amplification circuit L in turn to on-off circuit

Input.