CN201041788Y

CN201041788Y - Photoelectric magnetic force starter

Info

Publication number: CN201041788Y
Application number: CNU2007200938671U
Authority: CN
Inventors: 孙立国
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-07
Filing date: 2007-06-07
Publication date: 2008-03-26
Anticipated expiration: 2017-06-07

Abstract

The utility model provides a photoelectric magnetic starter, belongs to electrics, and overcomes the shortcomings of the ablation contact point, the starting arc, and the high-insulation requirement existed in the present electric power driven starter. The utility model consists of a photoelectric magnetic circuit and a circuit protecting case. The photoelectric magnetic circuit consists of a relay for controlling the contactor of the electric appliance, a switch audion for controlling the relay, an optical coupler for controlling the audion, an external lead and a button for controlling the optical coupler, a rectifier for connecting the external lead and the button into a working circuit, a first voltage-dividing current-limiting resistor for connecting the relay and the audion into a working circuit, a filtering capacitor, a second voltage-dividing current-limiting resistor for connecting a three-end integrated voltage regulator and the optical coupler into a working circuit, a filtering capacitor, and a three-end integrated voltage regulator. The utility model has the advantages that the control switch can work under a state of 5V DC low voltage and 2-3mA, and the factors which can ablate the contact point do not exist. The utility model has low isolation requirement, has self-checking and malfunction displaying functions, can enter into a working state when the malfunctions are eliminated, can ensure the equipment to run safely and stably.

Description

The photoelectricity magnetic starter

Technical field

The utility model belongs to electricity, is specifically related to power-equipment starting electrical equipment.

Background technology

The Electric Traction control of existing mine has two kinds, and a kind of is the 36V low voltage control, and another kind is the control of 380V total head.Though what the 36 volts of controls in down-hole, mine were used is safe voltage, starting current is excessive, the phenomenon of push-button contact often occurs burning, and element replacement is frequent, wastes bigger.Total head control requires the button good insulation preformance, and the starting the arc easily in using, poor stability in the use.

Summary of the invention

The purpose of this utility model provides a kind of photoelectricity magnetic starter, overcomes existing mine Electric Traction starting electrical equipment above shortcomings.

Photoelectricity magnetic force starter controller of the present utility model is made up of photoelectricity magnetic force starting circuit and circuit protecting box, photoelectricity magnetic force starting circuit is by the relay of control electrical appliance contactor, the switch triode of control relay, the optocoupler of control triode, control optocoupler outer joined lead and button and aforementioned components connected into the rectifier of operating circuit, with relay, triode connects into a current-limiting resistor voltage divider of operating circuit, filtering capacitor, three terminal integrated voltage stabilizer and optocoupler is connected into the second divided voltage current-limiting resistance of operating circuit, filtering capacitor, three terminal integrated voltage stabilizer is formed.

The operation principle of the utility model starting circuit is: after being connected on the current commutates that the rectifier on the contactor 36V solenoid power supply will pass through, through first order dividing potential drop current limliting, filtering, voltage stabilizing obtains the 24V DC power supply for relay and triode.Form optocoupler work 5V power supply through second level dividing potential drop current limliting, filtering, voltage stabilizing again.Regulating the W external resistance can regulate and control voltage because of the length of outer guide line, makes optocoupler be operated in optimum state.Start button is joined lead and control button outward and is constituted the loop, and the optocoupler secondary just has switching value output, the switching value of output goes to control the triode conducting, relay adhesive, a relay normally open contact closure of control main contactor, the main contactor adhesive, electrical appliance work.Another normally opened contact of the relay of adhesive when needs are shut down, is pressed the cut-out switch in the control loop as the self holding contact of control loop, and optocoupler does not once have control voltage, secondary no-output.Relay discharges, and gets back to the power-equipment off-position.

The beneficial effects of the utility model are: control switch is worked under the weak current state of 5V dc low-voltage, 2-3mA, does not have the factor of ablation contact.Insulating requirements is low, and self check and fault Presentation Function are arranged, and failure judgement is fast.The fault eliminating promptly enters operating state automatically.Guarantee electricity consumption power-equipment safety, stable operation.Reduce starting device operation use cost.

Description of drawings

Fig. 1 is the utility model starter circuit figure.

Fig. 2 installs and uses state diagram for the utility model.

Embodiment

Provide embodiment of the present utility model below in conjunction with accompanying drawing.

1, assembling starter.

Purchase bridge rectifier D Z by element shown in Figure 1 ₁Filter capacitor C ₁, C ₂, C ₃, current-limiting resistor voltage divider R ₁, R ₂, R ₃, R ₄, three terminal integrated voltage stabilizer IC ₁, IC ₂, switch triode T, optocoupler IC ₃, relay J, outer conductor and push-button switch TA, QA.And on circuit board, connect to form starter circuit by element annexation shown in Figure 1.With the circuit board housing of packing into, peg button switch TA, QA and the lead of drawing of the relay normally open contact of starter power line, control contactor passed outside the shell on housing realize that an end of the relay normally open contact of self-insurance is drawn outside the shell with lead.

2, fixedly starter, action button connect the connection lead between starter, action button and the main contactor.

Starter 1 and action button 3 are fixed on the casing near the control cabinet of main contactor 2, the power line of starter is connected on the 36V ac working power supply of main contactor, two lead-out wires of the normally opened contact of the control contactor of starter repeat circuit connect the two ends of main contactor switch, realize to keep the lead-out wire of normally opened contact of the self-insurance of outer conductor conducting to be connected on the line between start button and the stop button, outer conductor between attended operation button and the starter is regulated the potentiometer between outer conductor and the optocoupler.The utility model can come into operation.

Claims

1. photoelectricity magnetic starter, it is characterized in that: form by photoelectricity magnetic force starting circuit and circuit protecting box, photoelectricity magnetic force starting circuit is by the relay of control electrical appliance contactor, the switch triode of control relay, the optocoupler of control triode, control optocoupler outer joined lead and button and aforementioned components connected into the rectifier of operating circuit, with relay, triode connects into a current-limiting resistor voltage divider of operating circuit, filtering capacitor, three terminal integrated voltage stabilizer and optocoupler is connected into the second divided voltage current-limiting resistance of operating circuit, filtering capacitor, three terminal integrated voltage stabilizer is formed.