CN217406178U

CN217406178U - Automatic electricity-saving control system of drilling machine

Info

Publication number: CN217406178U
Application number: CN202221422838.6U
Authority: CN
Inventors: 张作坤; 张经华; 张文武; 郭进京
Original assignee: RIZHAO LIYING MACHINERY MANUFACTURING CO LTD
Current assignee: RIZHAO LIYING MACHINERY MANUFACTURING CO LTD
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-09
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses an automatic power-saving control system of drilling machine belongs to the electrical equipment field, and it has solved and has lacked the automatic shutdown problem of back motor among the prior art of a course of working completion. The device comprises a motor M, an alternating current contactor KM and a transformer T, wherein the alternating current contactor KM comprises an alternating current contactor contact KM1 and an alternating current contactor coil KM0, and two ends of the transformer T are respectively connected with a normally closed contact SQ of a travel switch and the alternating current contactor coil KM 0; the normally closed contact SQ of the travel switch is connected with an alternating current contactor coil KM0 in series. The utility model discloses mainly used mechanical equipment controls, but has the automatic characteristics of opening the equipment that stops, simplifies workman daily operation, saves the electric power resource. A time delay system can be added on the original basis, and the time delay system is used for avoiding loss caused by multiple times of sudden stop of mechanical equipment within a short time. The utility model discloses simple structure, but wide application in the mill's equipment.

Description

Automatic electricity-saving control system of drilling machine

Technical Field

The utility model relates to an industrial operation system, specifically speaking especially relates to an automatic power-saving control system of drilling machine

Background

The drilling machine is a common machining device, the used power is a high-power motor generally, and the consumed power is very large. However, when the devices work, the workers need to take the workpieces to the workbench and take the workpieces off after the work is finished, and a large amount of electric power is wasted in the taking and placing processes. And some operators have low power-saving awareness and do not turn off the power supply of the equipment when leaving the station, so that a large amount of power is continuously wasted. At present, a control circuit for automatically stopping the motor after the machining process is finished is lacked.

Disclosure of Invention

An object of the utility model is to provide an automatic power-saving control system of drilling machine to solve and lack the automatic shutdown problem of motor after workman's course of working is accomplished among the prior art.

The utility model discloses a realize through following technical scheme:

the utility model comprises a motor M, an alternating current contactor KM and a transformer T, wherein the alternating current contactor KM comprises an alternating current contactor main normally open contact KM1 and an alternating current contactor coil KM 0; the 380V power supply connection transformer T is also supplied to the motor M through a fuse R, a main normally open contact KM1 of an alternating current contactor and a thermal relay FR. The secondary side of the transformer T is connected with an alternating current contactor coil KM0 after passing through a normally closed contact SQ of the travel switch, and a main normally open contact KM1 of the alternating current contactor is controlled by the alternating current contactor coil KM 0.

Furthermore, the normally open contact Q is connected with a time relay controller KT0, and the other end of the time relay controller KT0 is connected with a transformer T to form a loop; the normally open contact SQ and the normally closed contact Q of the travel switch are linked; the normally closed contact KT1 of the time relay is connected with an auxiliary normally open contact KM2 of the alternating current contactor, and the auxiliary normally open contact KM2 of the alternating current contactor is connected with an alternating current contactor coil KM0 to form a loop; the auxiliary normally open contact KM2 of the alternating current contactor is controlled by an alternating current contactor coil KM0, and the normally closed contact KT1 of the time relay is controlled by a time relay controller KT 0.

Further, the secondary of the transformer T is connected with an indicator lamp L in parallel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. if the operator does not shut down, the circuit can automatically cut off the power supply of the motor, so that a large amount of power waste for a long time is avoided.

2. The operator can choose to continue working or leave during the time delay shutdown period, and loss caused by frequent starting of the motor or the system is avoided.

3. The control circuit has simple structure, is convenient to realize and is beneficial to the daily work of workers.

Drawings

FIG. 1 is a basic auto-power-off circuit diagram of the present invention;

FIG. 2 is a circuit diagram of the delayed power-off circuit of the present invention;

in the figure: the device comprises a motor M, a thermal relay FR, a fuse R, a transformer T, an indicator lamp L, a time relay KT, an alternating current contactor coil KM0, an alternating current contactor main normally open contact KM1, an alternating current contactor auxiliary normally open contact KM2, a travel switch normally closed contact SQ, a normally open contact Q, a time relay controller KT0 and a time relay normally closed contact KT 1.

Detailed Description

The invention will be further described and illustrated with reference to the accompanying drawings.

As shown in fig. 1, in embodiment 1, in an automatic power saving control system for a drilling machine, a motor M is connected to a 380V ac power supply through a thermal relay FR, a main normally open contact KM1 of an ac contactor, and a fuse R; the primary side of the transformer T is connected with a 380V alternating current power supply, and the secondary side of the transformer T generates isolated voltage. The secondary is connected with a coil KM0 of the alternating current contactor through a normally closed contact SQ of the travel switch to form a loop. The indicator light L is connected to the secondary side of the transformer T and is turned on to indicate that the equipment is electrified and can be started at any time. A drill bit pushes down and triggers normally closed contact SQ of a travel switch, when an operating rod of a drilling machine is motionless, the operating rod props against the normally closed contact SQ of the travel switch, the normally closed contact SQ is broken under pressure, a coil KM0 of an alternating current contactor cannot generate suction force due to power failure, a main normally open contact KM1 of the alternating current contactor is broken, and a motor M does not run without power supply. When the operating rod is pulled to drill, the pressure on the normally closed contact SQ of the travel switch disappears, the contact is connected, the secondary voltage of the transformer T can be provided for the alternating current contactor coil KM0, the alternating current contactor wire KM0 generates magnetic attraction force, the main normally open contact KM1 of the alternating current contactor is attracted, and the motor M obtains alternating current power supply operation to perform normal drilling operation. Therefore, when the drill bit is pressed down, the normally closed contact SQ of the travel switch is closed, when the drill bit is lifted, the normally closed contact SQ of the travel switch is disconnected, the motor is further controlled to operate or stop, and the whole system is controlled through the normally closed contact SQ of the travel switch.

The advantage of this embodiment is that, behind the drilling machine switch on, only when pulling the action bars and carry out the drilling operation, the motor could switch on the operation, consumes electric power, and during the unloading of operating personnel, can not pull the action bars, and the motor does not switch on this moment, has avoided the motor to last to be in the electric power waste that running state caused. Particularly, when the operator leaves the station and does not turn off the power switch, the operating rod is in an untripped state, the motor does not rotate, and the power saving effect is particularly remarkable.

As shown in fig. 2, in embodiment 2, an automatic power saving control system for a drilling machine is additionally provided with a time delay power-off system on the original basis. The time relay KT comprises a time relay controller KT0 and a time relay normally closed contact KT 1; the normally open contact Q linked with the normally closed contact SQ is connected to a controller KT0 of the time relay, and the normally closed contact KT1 of the time relay is connected with an auxiliary normally open contact KM2 of the alternating current contactor and then connected to an alternating current contactor coil KM 0. After the drilling machine is powered on, under the condition that an operating rod is not moved, a normally closed contact SQ of a travel switch is squeezed to be disconnected, the voltage of the secondary side of a transformer T cannot be supplied to an alternating current contactor coil KM0, and a main normally open contact KM1 and an auxiliary contact KM2 of the alternating current contactor are not attracted; the opening of the main normally open contact KM1 of the AC contactor stops the motor M without consuming power. The opening of the ac contactor auxiliary contact KM2 causes the ac contactor coil KM0 to remain in a power-off state. When the operating rod is pulled to perform drilling operation, the pressure on the normally closed contact SQ of the travel switch disappears and is connected, the coil KM0 of the alternating current contactor is supplied with power, the main normally open contact KM1 of the alternating current contactor is attracted with the auxiliary contact KM2 of the alternating current contactor, and the motor M is supplied with power at 380V to operate so as to perform drilling operation. When the operating rod is released after drilling, the voltage of the transformer T can still form self-locking through the normally closed contact KT1 of the time relay and the auxiliary contact KM2 of the switched-on alternating current contactor, the coil KM0 of the alternating current contactor is continuously supplied with power, the power supply of the motor M is continuously maintained, and the motor M continuously runs. However, when the operating lever is released, the normally closed contact SQ of the travel switch is turned off, and the normally open contact Q is connected, so that the time relay controller KT0 is powered on to count time when the normally open contact Q is turned on. If the operating lever is pulled again before the timing time is reached, the normally open contact Q is switched to the off state, the timing is cancelled, the normally closed contact KT1 is kept normally closed, and the hole can be drilled again without stopping the motor. However, if the time is up and the operation lever is not pulled, the time relay operates, the normally closed contact KT1 of the time relay is turned off, the main normally open contact KM1 of the ac contactor and the auxiliary contact KM2 of the ac contactor are released by the coil KM0 of the ac contactor without electricity, and the motor M stops rotating and self-locking is released. The motor may be started again only when the operating lever is pulled again.

The timing time of the time relay can be set as required, and certain feeding and discharging time is guaranteed. The operating personnel loosens the operating rod after finishing the last part, takes off the workstation to the part, puts on next one again, pulls the operating rod, if in the time of setting up, the motor is in the continuous operation state, has avoided motor frequent opening like this to stop, and is favorable to maintaining electric wire netting stability and equipment life. However, if the set time is exceeded, for example, the operator leaves the station, the motor is automatically turned off, and waste caused by long-time idling of the motor is avoided. The problem that the motor frequently opens and stops of unloading has not only been avoided in the short time to this embodiment, has still solved the extravagant problem of the long-time idle running of motor.

The secondary of transformer is parallelly connected with pilot lamp L, and suggestion operating personnel this equipment is in standby state this moment, in case pull the action bars and will start motor operation immediately, avoids because the injury that the maloperation equipment caused.

Claims

1. An automatic electricity-saving control system of a drilling machine comprises a motor M, an alternating current contactor KM and a transformer T, wherein the alternating current contactor KM comprises an alternating current contactor contact KM1 and an alternating current contactor coil KM0, and is characterized in that two ends of the transformer T are respectively connected with a normally closed contact SQ of a travel switch and an alternating current contactor coil KM 0; the normally closed contact SQ of the travel switch is connected with an alternating current contactor coil KM0 in series.

2. The automatic power-saving control system of the drilling machine as claimed in claim 1, wherein: the time relay KT comprises a time relay controller KT0 and a time relay normally closed contact KT 1; the time relay controller KT0 is connected with a normally open contact Q in series, the other end of the normally open contact Q is connected with a transformer, and the other end of the normally open contact Q is connected back to the transformer; the normally open contact Q is linked with a normally closed contact SQ of the travel switch; one end of the time relay normally closed contact KT1 is connected with a travel switch normally closed contact SQ, the other end of the time relay normally closed contact KT1 is connected with an alternating current contactor auxiliary normally open contact KM2 in series, and the other end of the alternating current contactor auxiliary normally open contact KM2 is connected back to the travel switch normally closed contact SQ.

3. The automatic power-saving control system for the drilling machine as claimed in claim 1 or 2, wherein: the device also comprises an indicator light L; the indicator light L is connected with the secondary side of the transformer T in parallel.