Fully automatic garbage power generation dedicated grab crane

Detailed description of garbage grab crane:

Due to the high working level of the garbage grab crane and the characteristics of the crane itself, it has brought great challenges to the stable and reliable operation of the system. Our company has accumulated and summarized the operating characteristics of the garbage grab crane through work in the lifting industry, and developed a set of frequency conversion speed control methods specifically designed for the garbage grab crane, which enables the crane to operate stably and reliably. A crane handling system consisting of two garbage grab cranes (one working and one backup) is used to complete tasks such as garbage feeding, stacking, mixing, moving, and breaking in the garbage incineration power plant. Each crane has its own independent electrical control system, operation console, and HMI display panel, which can provide manual or semi-automatic control systems according to user needs. Hand and automatic switching are convenient and fast. There are mainly the following characteristics:

1Large speed regulation range:Due to the characteristics of garbage collection and the need to improve efficiency, the speed regulation requirements of the system are very high. Our company can provide multi-level speed regulation and stepless speed regulation options according to the needs of users.

2Smooth operation:By optimizing the torque output of the motor, the acceleration and deceleration of the vehicle can be effectively controlled to avoid the shaking of the grab bucket, which not only ensures smooth system operation but also provides a good measurement environment for the weighing system. The weighing system and control system are designed to work together but independently, and the failure of one system will not cause the other system to malfunction.

3Multiple control modes and instruction modes:There are V/F control, vector open-loop or vector closed-loop control. In special circumstances for users, we have multiple command modes to choose from, including potential rods, 2-4 main command consoles, 0~10V or 4~20mA analog signals, etc.

4Convenient manual and automatic switching:After simple settings, the system can operate in automatic mode, providing functions such as automatic feeding, stacking, and weighing, as well as self-protection. At the same time, as long as the operator inputs (except for automatic operation data settings), it can be restored to manual mode to ensure safety. Implement "convenient switching, manual priority".Efficient automatic operation.

A.Automatic feeding:As shown in the feeding screen, simply click on the two positions on the touch screen to select the feeding position and feeding furnace port. After setting the feeding weight, the system can automatically complete the feeding work, greatly reducing the workload of operators.

B.Automatic stacking:As shown in the stacking screen, simply click on the two positions on the touch screen to select the picking position and feeding position. After setting the stacking weight and height, the system will automatically stack.

CComprehensive monitoring and multiple reliable and effective protection measures:There are protective measures for the operating room area, anti tipping measures for the grab bucket, anti-collision measures for the crane, limit switches, etc. At the same time, as a lifting mechanism, it is also equipped with a heavy hammer type emergency limit. Interlock control with the unloading system. By interlocking with the unloading system, the grab bucket and unloading truck can be protected to prevent collision and ensure safety.

Overview of Electronic Control System for Garbage Grab Crane:The electric control system of the crane adopts advanced "touch screen+PLC+variable frequency speed regulation" control scheme at home and abroad, realizing comprehensive monitoring, automatic control and high-precision speed regulation functions of the whole machine. All mechanisms of the crane (except for the grab bucket) are equipped with digital frequency conversion speed control devices, and the whole machine is controlled by PLC. The crane can achieve automatic functions such as material grabbing, handling, and berthing, that is, manual/automatic operation.

Semi automatic operation mode of crane:Automatically run to the picking position, manually close the grab bucket to grab the garbage, and then, according to the set feeding address, the crane will automatically run to the feeding position under program control to achieve weighing and record the weight of the garbage in the bucket. Open the grab bucket and put the garbage into the hopper. After the feeding is completed, it will automatically return to the garbage pit and complete the feeding process.

Weighing:A weighing device is installed on the trolley frame of the crane, which has functions such as automatic peeling, semi-automatic weighing, display, accumulation, printing, etc., used for process measurement and overload protection. The weighing display device is located in the driver's cab and is used to display, count, and record various parameters of the feeding process. The weighing accuracy is 1%, and it is transmitted to the control room through a signal line. The control room microcomputer measures and prints reports for historical inquiry. The weighing system also has overload alarm function.

Manipulate the driver's cab:There are control mechanisms for each mechanism of the crane, and the controller is installed on the linkage platform to control the control cabinet of the lifting, crane, and trolley operation mechanisms. The controller is standard interchangeable and contact type. There is also a control box in the driver's cab with power key switch, start, stop, emergency stop and other operation buttons. And leave a control button for opening the garbage door in an appropriate position. Auxiliary equipment:Lighting:Under the crane bridge, there are 4 or 3 auxiliary lighting fixtures.

call the police:The crane bridge is equipped with an alarm bell, which is controlled by a foot switch located on the linkage platform. When driving, the driver can press the switch to issue a driving alarm signal.

Reliable security measures:Air circuit breakers and phase sequence protectors are used to protect the entire system and its subsystems from short circuits, overcurrent, overheating, and misconnection. The protection function of the frequency converter is used for short circuit, overcurrent, motor overheating protection of various driving operating mechanisms, undervoltage, overvoltage, grounding, short circuit, stall prevention, heat sink overheating, brake unit overheating protection, etc. Using a rotary encoder to detect the running position for automatic control, and displaying the height of the lifting mechanism. Use limit and travel switches for second level limit protection.

Friendly operating interfacea) Semi automatic control touch screen, comfortable operation feel, realistic control switch simulation, clear picture, bright colors, menu design meets customary requirements, simple and clear. Set up command buttons, action buttons, and function buttons on the screen. After the instruction is input into the control system, the control system arranges each branch program into a complete program according to the requirements of the instruction based on different programs, and commands the crane to complete the actions specified in the instruction. b) The design of the control handle for the operation linkage console fully considers the requirements of the driver during operation and conforms to the principles of ergonomics. c) The angle of the driver's seat backrest can be adjusted to meet the comfortable operation needs of drivers of different heights.