A multi-crane linkage remote control system

Abstract

The utility model discloses a kind of multi-crane linkage remote control systems, including remote controller and PLC controller;Switch S1, switch S2 and switch S3 are equipped on remote controller, and by operating switch S1, switch S2 and switch S3, remote controller output signal is given to PLC controller, and the output module of PLC controller is energized to corresponding relay;The output module of PLC controller includes relay K10, relay K20 and relay K30, and relay K10 is connected in series with the normally closed contact of relay K20, relay K20 is connected in series with the normally closed contact of relay K10, and relay K30 is connected in series with the normally closed contact of relay K10 and the normally closed contact of relay K20.The utility model realizes the flexible, safe, efficient collaborative control of multiple cranes, with good practicality and popularization value, especially suitable for industrial plant, port terminal, large equipment installation and other need multi-machine cooperation hoisting operation scene.

Description

Technical Field

[0001] This utility model relates to the field of crane control technology, specifically a multi-crane linkage remote control system. Background Technology

[0002] In modern industrial production and large-scale engineering construction, lifting equipment serves as a key tool for material handling and component installation. Its operational efficiency and safety directly impact the overall construction progress and operational safety. As lifting tasks become increasingly complex, a single crane often struggles to meet the demands of simultaneous operations involving heavy loads, long spans, or high precision. Therefore, the application of multiple cranes working in tandem is becoming increasingly widespread. For example, the installation of stators and rotors in power plants and the lifting of extra-long materials often require the use of two or more cranes working together. Conventional tandem lifting schemes still rely on independent remote control or ground-based wired control, with each crane controlled separately by different operators. This leads to significant coordination difficulties, reliance on manual experience, and a high risk of asynchronous actions and communication breakdowns, reducing operational efficiency and increasing safety risks. Furthermore, the lack of effective logical interlocking and linkage control mechanisms can result in serious accidents such as equipment collisions, load tilting, or even overturning due to misoperation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a multi-crane linkage remote control system, which realizes flexible, safe and efficient collaborative control of multiple cranes. It has good practicality and promotion value, and is particularly suitable for lifting operation scenarios that require the cooperation of multiple cranes, such as industrial plants, port terminals, and large equipment installation. It can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-crane linkage remote control system, including a remote controller and a PLC controller; the remote controller is equipped with switches S1, S2 and S3, and by operating switches S1, S2 and S3, the remote controller outputs signals to the PLC controller, and the PLC controller output module powers the corresponding relays; The output module of the PLC controller includes relays K10, K20 and K30. Relay K10 is connected in series with the normally closed contact of relay K20, relay K20 is connected in series with the normally closed contact of relay K10, and relay K30 is connected in series with the normally closed contact of relay K10 and the normally closed contact of relay K20. The switch S1 controls the on / off state of relay K10, the switch S2 controls the on / off state of relay K20, and the switch S3 controls the on / off state of relay K20.

[0005] Preferably, it also includes a switch and a wireless communication module. The remote controller communicates with the switch through the wireless communication module, and the remote controller sends control commands to the PLC controller through the switch.

[0006] Preferably, relay K10 is used to control the operation of crane #1, relay K20 is used to control the operation of crane #2, and relay K30 is used to control the linkage and synchronous operation of crane #1 and crane #2.

[0007] Compared with the prior art, the beneficial effects of this utility model are: 1. Multiple cranes can be operated independently and synchronously by setting a single remote control. Operators do not need to switch between multiple control points or operate in coordination with multiple people. This enables single-person multi-machine collaborative control, improving work efficiency. It is especially suitable for complex working conditions such as hoisting large components and synchronous handling across distances. 2. In the PLC controller, relays K10 and K20 are electrically interlocked through their normally closed contacts. The control circuit of relay K30 is connected in series with the normally closed contacts of K10 and K20, ensuring that the linkage synchronization mode can only be activated when neither of the two cranes is running independently. This prevents conflicts between linkage and single-machine operation, effectively preventing crane #1 and crane #2 from operating simultaneously in non-linkage mode. The logic interlock improves the safety and reliability of the system. In summary, this invention achieves flexible, safe, and efficient collaborative control of multiple cranes, and has good practicality and promotional value. It is particularly suitable for lifting operation scenarios that require the cooperation of multiple cranes, such as industrial plants, port terminals, and large equipment installation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the remote control operation of this utility model; Figure 2 This is a schematic diagram of the communication connection of this utility model; Figure 3 This is a schematic diagram of the PLC controller circuit of this utility model.

[0009] In the diagram: 1. Remote control, 2. Switch, 3. Wireless communication module, 4. PLC controller. 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 1-3 The present invention provides the following technical solution: Example 1: A multi-crane linkage remote control system includes a remote controller 1 and a PLC controller 4; the remote controller 1 is equipped with switches S1, S2 and S3. By operating switches S1, S2 and S3, the remote controller 1 outputs signals to the PLC controller 4, and the PLC controller 4 outputs modules to power the corresponding relays. The output module of PLC controller 4 includes relays K10, K20 and K30. Relay K10 is connected in series with the normally closed contact of relay K20, relay K20 is connected in series with the normally closed contact of relay K10, and relay K30 is connected in series with the normally closed contact of relay K10 and the normally closed contact of relay K20. Switch S1 controls the on / off state of relay K10, switch S2 controls the on / off state of relay K20, and switch S3 controls the on / off state of relay K20. Specifically, relay K10 is used to control the operation of crane #1, relay K20 is used to control the operation of crane #2, and relay K30 is used to control the synchronized operation of crane #1 and crane #2. When relay K10 is energized, its normally closed contact opens, thus de-energizing relays K20 and K30. Similarly, when relay K20 is energized, its normally closed contact opens, de-energizing both relays K10 and K30. This effectively prevents cranes #1 and #2 from operating simultaneously in non-interlocking mode. It also ensures that the interlocking synchronization mode can only be activated when neither crane is operating independently, providing logical interlocking and enhancing system safety and reliability. Furthermore, a single remote control can simultaneously control the independent operation and interlocking synchronization of multiple cranes, eliminating the need for operators to switch between multiple control points or perform multi-person collaborative operation. This enables single-person, multi-machine collaborative control, improving operational efficiency.

[0012] Example 2: Unlike Example 1, it also includes a switch 2 and a wireless communication module 3. The remote controller 1 and the switch 2 are connected via the wireless communication module 3. The remote controller 1 sends control commands to the PLC controller 4 through the switch 2. By introducing the wireless communication module 3 and the switch 2, stable wireless data transmission between the remote controller 1 and the PLC controller 4 is achieved, eliminating the distance and wiring limitations of traditional wired control. It is suitable for complex or highly mobile operating environments, enhancing the applicability and deployment flexibility of the system.

[0013] 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. A multi-crane linkage remote control system, characterized in that: It includes a remote controller (1) and a PLC controller (4); the remote controller (1) is equipped with switches S1, S2 and S3. By operating switches S1, S2 and S3, the remote controller (1) outputs signals to the PLC controller (4), and the PLC controller (4) outputs modules to power the corresponding relays. The output module of the PLC controller (4) includes relays K10, K20 and K30. Relay K10 is connected in series with the normally closed contact of relay K20, relay K20 is connected in series with the normally closed contact of relay K10, and relay K30 is connected in series with the normally closed contact of relay K10 and the normally closed contact of relay K20. The switch S1 controls the on / off state of relay K10, the switch S2 controls the on / off state of relay K20, and the switch S3 controls the on / off state of relay K20.

2. The multi-crane linkage remote control system according to claim 1, characterized in that: It also includes a switch (2) and a wireless communication module (3). The remote controller (1) communicates with the switch (2) through the wireless communication module (3). The remote controller (1) sends control commands to the PLC controller (4) through the switch (2).

3. The multi-crane linkage remote control system according to claim 1, characterized in that: The relay K10 is used to control the operation of crane #1, the relay K20 is used to control the operation of crane #2, and the relay K30 is used to control the linkage and synchronous operation of crane #1 and crane #2.

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