VB chain hoists and steel clamp are used to enhance the weight of the tool, do not overload the use of heavy lifting. Overloading can cause damage to chain hoists and steel clamps.
When using hand chain hoists to lift heavy objects, be sure to fix the weight firmly. Steel clamp as an important fixture, for the lifting of heavy objects have an important role. When using it to lift heavy objects, but also pay attention to the firmness of heavy objects.
1. The height of the Lifting Tools installation site does not exceed 2000M.
2. Lifting Tools working environment shall not have flammable and explosive and corrosive gases.
3. Lifting Toolss do not allow the lifting of molten metal, toxic substances and flammable and explosive materials.
4. Lifting Tools power for the three-phase AC, rated frequency of 50HZ, rated voltage of 380V.
Lifting Toolss mainly include hoisting mechanism, operating mechanism, luffing mechanism, rotary mechanism and metal structure.
Lifting mechanism is the basic working mechanism of the Lifting Tools, mostly by the hanging system and winch, but also through the hydraulic system lift heavy objects.
The operating mechanism is used to vertically transport the weight or adjust the working position of the Lifting Tools, usually consisting of an electric motor, a gear unit, a brake and a wheel.
The luffing mechanism is only equipped with a boom-type Lifting Tools, the boom is reduced when the amplitude is raised, the amplitude increases, the sub-equilibrium amplitude and the unbalanced amplitude are two.
The rotary mechanism is used to rotate the boom, which consists of a drive device and a slewing bearing.
Metal structure is the skeleton of the Lifting Tools, the main bearing parts such as bridge, boom and mast for the box structure or truss structure, but also for the web structure, and some available steel as a support beam.
Close l-3 fire. Its three pairs of contacts at the same time closed, you can work properly. When the shovel needs to turn, the combination switch 3ffK l connected, 3 tired -2 disconnect, 32c action, so that the rotary motor 3Dl, 3D2 access power. In order to prevent the normal operation of the transformation work, there is no voltage relay in the main circuit protection link. Normal operation, the voltage relay device 311J pull, the moving contact closed, through the 3zc contact to the touch device 32c power supply.
3yJ release voltage is very low [10v or so) calendar in the normal operation to switch the switch 3 to play X-, contact device 3zC still through the contact 3yJ and suction table. Therefore, F can turn to walk operations. The turn job continues. Only when the rotation is stopped. Can be transformed into walking operations. When the need to transfer to the operation, the price of the sander to switch the switch to the trigger. At this time, 3HK-s is closed and the contact devices 4zcL and 42c2 are energized, and the running motor 4D is connected to the main circuit. Since the output voltage of the rotary generator 3F is much higher than the operating voltage of the traveling motor,Lifting Tools the resistors 4R and 4Rc are connected in series to the given signal circuit through the normally closed contact 4zc2, and the given signal current is reduced to the rotation 50% of the time.
When the shovel needs to climb, if the motor output is insufficient, you can press the "stiffening" button J4, so that the walking motor he excited winding circuit contacts / 4-1 closed,Lifting Tools 3sv rectified by the insertion potential after the string into 220v DC circuit, so that the running motor strong magnetic operation. The J4-2 is closed and the resistor 4R3 is shorted to increase the current of the given signal to increase the rotor voltage of the rotor, thus increasing the torque and speed of the travel motor.