Interlock control circuit for dual remote control of a crane

Abstract

The utility model discloses a kind of interlock control circuit of crane double remote controller, including remote controller one power supply circuit, remote controller two power supply circuit, remote controller one emergency stop control circuit and remote controller two emergency stop control circuit;The normally closed contact of relay K02 is connected in series in the remote controller one power supply circuit;The normally closed contact of relay K01 is connected in series in the remote controller two power supply circuit;The emergency stop knob switch of remote controller one is connected in series in the remote controller one emergency stop control circuit with relay K01;The emergency stop knob switch of remote controller two is connected in series in the remote controller two emergency stop control circuit with relay K02;The utility model is cut off the power supply of another remote controller by the emergency stop of remote controller, so that another remote controller cannot be powered, to realize safety interlock, ensure safe operation.

Description

Technical Field

[0001] This utility model relates to the field of crane control technology, specifically to an interlocking control circuit for a crane dual remote controller. Background Technology

[0002] With the development of technology and the diversification of crane types, the variety of operating methods has also increased, including air-operated, ground-operated, remote-controlled, air-operated and remote-controlled combined, ground-operated and remote-controlled combined, and so on. Because remote controls are mobile devices, workshop operators frequently handle them, and sometimes they cannot be found due to management issues. Therefore, more and more customers are requesting two sets of remote controls with an interlocking function, allowing only one remote control to operate at any given time. Thus, a circuit capable of interlocking the control of the remote controls is proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an interlocking control circuit for dual remote controllers of a crane. By cutting off the power supply of one remote controller through the emergency stop of the other remote controller, the other remote controller is de-energized, thereby achieving safety interlocking and ensuring safe operation. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an interlocking control circuit for dual remote controllers of a crane, comprising a power supply circuit for remote controller one, a power supply circuit for remote controller two, an emergency stop control circuit for remote controller one, and an emergency stop control circuit for remote controller two; The power circuit of the remote control has a normally closed contact of relay K02 connected in series. The power supply circuit of the remote control is connected in series with the normally closed contact of relay K01; The emergency stop control circuit of the remote control is connected in series with relay K01 and emergency stop rotary switch of the remote control. The emergency stop control circuit of the second remote controller is connected in series with relay K02 and the emergency stop rotary switch of the second remote controller.

[0005] Preferably, it also includes a remote start control circuit, which includes two parallel branches. The two parallel branches are connected in series with the start button of remote control one and the start button of remote control two, respectively. The two parallel branches are connected in series with relay K00, and the normally open contact of relay K00 is connected in series with an indicator light.

[0006] Preferably, the power supply circuits of the first remote controller and the second remote controller are connected in parallel and then connected in series with contactor contact KM1.

[0007] Compared with the prior art, the beneficial effects of this utility model are: when any remote control is picked up and the start button is pressed, the corresponding remote control emergency stop relay will be activated, which will cut off the power supply of the other remote control. At this time, the other remote control will not have any output when operating any button, which plays a mutual interlocking function. Only one remote control can work under any circumstances, ensuring safe operation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the power supply circuit for the remote control of this utility model; Figure 2 This is a schematic diagram of the control loop circuit of this utility model.

[0009] In the diagram: 1. Power supply circuit for remote control 1; 2. Power supply circuit for remote control 2; 3. Emergency stop control circuit for remote control 1; 4. Emergency stop control circuit for remote control 2; 5. Remote start control circuit. Detailed Implementation

[0010] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0011] Please see Figure 1-2 The present invention provides the following technical solution: Example 1: An interlocking control circuit for dual remote controllers of a crane, comprising a power supply circuit 1 for remote controller 1, a power supply circuit 2 for remote controller 2, an emergency stop control circuit 3 for remote controller 1, and an emergency stop control circuit 4 for remote controller 2; The power circuit 1 of the remote control has a normally closed contact of relay K02 connected in series. The power supply circuit 2 of the remote control has a normally closed contact of relay K01 connected in series. The emergency stop control circuit 3 of remote control 1 is connected in series with relay K01 and emergency stop rotary switch of remote control 1; The emergency stop control circuit 4 of remote control 2 is connected in series with relay K02 and the emergency stop rotary switch of remote control 2; When using remote control one, rotating the emergency stop knob switch will energize relay K01, causing the normally closed contact of relay K01 to open, thus disconnecting the power supply to remote control two, meaning remote control two will be de-energized and cannot work. When using remote control 2, rotating the emergency stop knob switch on remote control 2 will energize relay K02, causing the normally closed contact of relay K02 to open, thus disconnecting the power supply to remote control 1, meaning that remote control 1 will be de-energized and cannot work. It has an interlock function, so that only one remote control can work under any circumstances, ensuring safe operation.

[0012] Example 2: Unlike Example 1, it also includes a remote start control circuit 5. The remote start control circuit 5 includes two parallel branches, which are connected in series with the start button of remote control 1 and the start button of remote control 2, respectively. The two parallel branches are connected in series with relay K00. The normally open contact of relay K00 is connected in series with an indicator light. Remote control 1 and remote control 2 need to be started before they can work. This is a protection for the remote control to prevent random operation. The indicator light will light up after the remote control is started.

[0013] Example 3: Unlike Example 1, the power circuit 1 of remote control 1 and the power circuit 2 of remote control 2 are connected in parallel and then connected in series with the contactor contact KM1. When remote control is operated, the contactor contact KM1 is closed. Only when remote control operation is required can the power circuit 1 of remote control 1 or the power circuit 2 of remote control 2 be powered. This is also a kind of circuit protection.

[0014] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. An interlocking control circuit for a crane with dual remote controllers, characterized in that: It includes a power supply circuit (1) for remote control one, a power supply circuit (2) for remote control two, an emergency stop control circuit (3) for remote control one, and an emergency stop control circuit (4) for remote control two. The power circuit (1) of the remote control is connected in series with the normally closed contact of relay K02; The power supply circuit (2) of the remote control is connected in series with the normally closed contact of relay K01; The emergency stop control circuit (3) of the remote control is connected in series with relay K01 and emergency stop rotary switch of the remote control. The emergency stop control circuit (4) of the remote control 2 is connected in series with relay K02 and emergency stop rotary switch of remote control 2.

2. The interlocking control circuit for a crane dual remote controller according to claim 1, characterized in that: It also includes a remote start control circuit (5), which includes two parallel branches. The two parallel branches are connected in series with the start button of remote controller one and the start button of remote controller two, respectively. The two parallel branches are connected in series with relay K00, and the normally open contact of relay K00 is connected in series with the indicator light.

3. The interlocking control circuit for a crane dual remote controller according to claim 1, characterized in that: The power supply circuit (1) of the remote controller and the power supply circuit (2) of the remote controller are connected in parallel and then connected in series to contactor contact KM1.

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