CN216538923U - Interlocking control circuit for crushing production line - Google Patents

Abstract

The utility model provides an interlocking control circuit for a crushing production line, which comprises a multi-level interlocking control unit, wherein each level of the interlocking control unit respectively comprises an interlocking selection unit, an interlocking unit and a main control unit. One end of the unit is connected to the power supply, and the other end of the interlocking selection unit forms a loop with the main control unit through the interlocking unit; the input end of the interlocking unit of this level is connected to the output end of the interlocking unit of the next level. The utility model can not only facilitate any combination on site, but also play the role of interlocking protection, and has the advantages of arbitrary combination, convenient wiring and simple construction.

Description

A crushing production line interlocking control circuit

technical field

The utility model relates to the field of mine crushing equipment control, in particular to an interlocking control circuit for a crushing production line.

Background technique

When each equipment of the crushing production line is running, when the equipment at the rear stage fails and stops, the equipment at the front stage needs to stop running at the same time. Conventional interlock circuits are solidified before leaving the factory. If one device fails, the remaining devices will all stop running.

However, in reality, when the process flow or product needs to be adjusted, the field equipment needs to be adjusted and used in combination, and the existing solidified interlocking control circuit cannot meet the needs, and the adjustment is inconvenient.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the background technology, the utility model proposes an interlocking control circuit for a crushing production line.

An interlocking control circuit for a crushing production line, comprising a multi-stage interlocking control unit, each level of the interlocking control unit includes an interlocking selection unit, an interlocking unit and a main control unit, and one end of the interlocking selection unit is connected to a power supply , the other end of the interlocking selection unit forms a loop with the main control unit through the interlocking unit; the input end of the interlocking unit of this level is connected to the output end of the interlocking unit of the next level.

Based on the above, the interlock selection unit is a selection switch, the input end of the selection switch is connected to the power supply, the interlock operation output end of the selection switch is connected to the main control unit through the interlock unit, and the single switch of the selection switch is connected to the main control unit. The body running output terminal is connected to the main control unit.

Based on the above, the interlocking unit includes two input terminals and two output terminals, one input terminal of the interlocking unit is connected to the interlocking operation output terminal of the interlocking selection unit, and the other input terminal of the interlocking unit is connected The terminal is connected to the main control unit; an input terminal of the interlocking unit of this level is also connected to an output end of the interlocking unit of the next level, and the other input terminal of the interlocking unit of this level is also connected to the interlocking unit of the next level The other output terminal of this stage is connected between the two output terminals of this stage through the normally open contact of the contactor of the main control unit of this stage.

Based on the above, the main control unit includes a stop button, a start button, a contactor, a thermal relay, a running indicator and a fault indicator, one end of the stop button is used as the input end of the main control unit, and the other end of the stop button A circuit is formed by the start button, the coil of the contactor and the normally closed contact of the thermal relay in turn. One normally open contact of the contactor is connected to the two output terminals of the interlocking unit at this level, and the other normally open contact of the contactor is connected in parallel. At both ends of the start button, the running indicator is connected in parallel with both ends of the contactor coil; the normally open contact of the thermal relay and the fault indicator form a loop.

Compared with the prior art, the present utility model has substantial features and advancements. Specifically, the present utility model utilizes the mutual cooperation of multi-level interlocking control units. The interlocking control units at each level respectively include an interlocking selection unit and an interlocking unit. With the main control unit, it can not only facilitate any combination on site, but also play the role of interlocking protection. It has the advantages of arbitrary combination, convenient wiring and simple construction.

Description of drawings

FIG. 1 is a schematic diagram of the circuit structure of the single-stage interlocking control unit of the present invention.

FIG. 2 is a schematic diagram of the circuit structure of the three-level interlocking control unit of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figure 1, it is the circuit structure of the single-stage interlocking control unit, wherein SA1 is the interlocking selector switch, 4-1 and 4-2 are the two input terminals of the interlocking unit of the level, 4-3 and 4 -4 is the two output terminals of the level interlocking unit, SB1 is the stop button, SB2 is the start button, KM1 is the contactor, FR1 is the thermal relay, HR1 is the running indicator light, and HR2 is the fault indicator light.

Through the selector switch SA1, you can choose whether a single device is in the single position or the interlock position. When the selector switch contact 4.2 is closed, that is, when the single position is selected, the equipment at this level can be started independently without interlock control, so that the It is very convenient to debug a single device. Press the start button SB2, the coil of the contactor KM1 is energized, the normally open contact of the contactor KM1 is closed, the running indicator HR1 is powered on, and the two output terminals 4-3 and 4- of the interlocking unit of this stage are turned on. 4 It is connected through the normally open contact closed by the contactor KM1, but since the start button of the main control unit of the upper-level single device is not pressed, it does not affect the upper-level single device. When the stop button SB1 of the control unit is disconnected, the main control unit is powered off, and the single device stops running; or the thermal relay FR1 is triggered, the normally closed contact of the thermal relay FR1 is disconnected, the single device stops running, and the thermal relay FR1 normally open contact Closed, the fault indicator HR2 lights up to give an alarm. When the selector switch contact 4.1 is closed, the interlock operation position is selected, and interlock operation is required between devices.

In this embodiment, the interlocking operation of the three-level equipment shown in FIG. 2 is taken as an example to illustrate the interlocking operation, which may be multi-level in reality. In equipment 2, when the contact 2.1 of the selector switch is closed, the interlock position is selected for the equipment at this level:

During interlocking operation, the two input terminals 2-1 and 2-2 of the interlocking unit of the equipment at this level need to be connected, that is, the two output terminals 3-3 and 3-4 of the interlocking unit of the subsequent equipment must be connected. In the case of pressing the start button SB22, the coil of the contactor KM21 can be energized and closed, and the equipment at this level can be started; when the subsequent equipment fails or the stop button SB31 is disconnected, the interlocking unit of the latter equipment The two output terminals 3-3 and 3-4 are disconnected, resulting in the disconnection of the two input terminals 2-1 and 2-2 of the interlocking unit of the equipment at this level, which in turn causes the coil of the contactor KM21 at this level to be powered off. The device stops automatically.

When the contactor KM21 is pulled in, the equipment at this stage starts, and the output terminals 2-3 and 2-4 of the interlocking unit are closed and conducting, resulting in the two input terminals 1-1 and 1-2 of the interlocking unit of the preceding equipment. Connected, so that the front-end equipment can run in the interlocking operation state, so as to realize the interlocking of the front and rear stages.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (4)

1. The utility model provides a broken production line interlocking control circuit which characterized in that: the interlocking control system comprises a multi-cascade lock control unit, wherein each stage of interlocking control unit respectively comprises an interlocking selection unit, an interlocking unit and a main control unit, one end of the interlocking selection unit is connected with a power supply, and the other end of the interlocking selection unit forms a loop with the main control unit through the interlocking unit; the input end of the current-stage interlocking unit is connected with the output end of the next-stage interlocking unit.

2. The crushing production line interlock control circuit of claim 1, wherein: the interlocking selection unit is a selection switch, the input end of the selection switch is connected with a power supply, the interlocking operation output end of the selection switch is connected with the main control unit through the interlocking unit, and the single operation output end of the selection switch is connected with the main control unit.

3. The crushing production line interlock control circuit of claim 1, wherein: the interlocking unit comprises two input terminals and two output terminals, one input terminal of the interlocking unit is connected with the interlocking operation output end of the selected interlocking selection unit, and the other input terminal of the interlocking unit is connected with the main control unit; one input terminal of the interlocking unit of the current stage is also connected with one output end of the interlocking unit of the next stage, the other input terminal of the interlocking unit of the current stage is also connected with the other output end of the interlocking unit of the next stage, and the two output terminals of the current stage are connected through a normally open contact of a contactor of the main control unit of the current stage.

4. The crushing production line interlock control circuit of claim 1, wherein: the main control unit comprises a stop button, a start button, a contactor, a thermal relay, an operation indicator lamp and a fault indicator lamp, wherein one end of the stop button is used as the input end of the main control unit, the other end of the stop button sequentially passes through the start button, a coil of the contactor and a normally closed contact of the thermal relay to form a loop, one normally open contact of the contactor is connected with two output terminals of the interlocking unit, the other normally open contact of the contactor is connected with two ends of the start button in parallel, and the operation indicator lamp is connected with two ends of the coil of the contactor in parallel; the normally open contact of the thermal relay and the fault indicator light form a loop.

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