Guangzhou Techway Machinery Corporation

As a  Tower Crane Manufacturer , share with you. Most tower cranes use compact lifting mechanisms, which are easy to maintain and have few failures. The mechanism adopts rotor switching resistance to adjust the speed, and is equipped with 2 or 3 electromagnetic clutches. The inner and outer friction plates are compressed by electromagnetic suction to transmit power. Connection; convex claws on the outer circle of the outer plate are connected with the shift fork, and the shift fork is connected with the output gear of the transmission, thereby driving the hoisting drum to rotate. Top Kit Tower Crane When the current is input to the electromagnetic clutch coil through the brush, an electromagnetic suction force is generated, and the inner and outer plates are pressed to output power. When the brush is worn or the voltage is too low to keep the solenoid coil engaged, a gap is created between the inner and outer sheets. At this time, the motor is still working normally and the ...

As a  10 T Top Kit Tower Crane Wholesale , share with you. Emergency devices are devices that can prevent accidents from further expanding and cause injuries or major damage after the accident. (1) Protective device for broken rope of trolley When the luffing rope breaks, the luffing trolley is in a free state, and the boom has a certain slope, and there is also a wind blowing effect. Therefore, the luffing trolley may run out of control and cause danger. Rope protection is required in most national safety standards. Top Kit Tower Crane This device is set on a luffing trolley. Its principle is: a lever with a weight is sleeved on the luffing rope. Once the rope is broken, the lever is lifted by the weight and stuck on the horizontal web of the boom Stop the trolley. Generally, one set is set on the front and rear luffing ropes, and another set is also available for two-way action. It can be known from its principle that the lifting of the lever is controlled by the ten...

As a  Tower Crane Manufacturer , share with you. In order to improve the use safety of the tower crane torque limiter, the following specific measures can be targeted to avoid the failure of the tower crane torque limiter. 1.Improvement of moving limit switch The main function of the dynamic travel switch is to control its travel and perform terminal limit protection. The dynamic travel switch is transformed into a combination switch with high sensitivity and accuracy, that is, a combination early warning switch and a combination cut-off switch. Its structure is divided into single arm operation type with roller, which can be automatically reset; fork arm operation with roller, with 2 switching positions; worm and worm gear drive cam operation, 3 switching positions with trifurcated arm; The two arms of the roller operate two switching positions and so on. The improved dynamic stroke switch increases the control line of the torque limiter, that is, when abnormal conditions occ...

As a  Heavy Machinery Tower Crane Manufacturers , share with you. For tower cranes that are stopped for 3-5 months, anti-corrosion is an important task. In recent years, the proportion of acid rain components in the sky has increased, which will also adversely affect tower cranes. Before the tower crane is stopped and maintained, the surface paint film of the whole machine should be thoroughly inspected. (1) For the damaged part of the paint film on the metal structure, cleaned the surface of the component and coated it with anti-rust paint and decorative paint film to protect the metal surface from rusting after rain and snow. Luffing Jib Tower Cranes (2) In the movable part of the tower crane, such as the joint of the boom and the tower item, the connecting pin of the sling and the crane, the various guide wheels, trolley wheels, etc., it is necessary to do a good job of rust prevention. We have talked about this problem with many drivers and maintenance personnel who ...

As a  Tower Crane Manufacturer , share with you. The lifting mechanism is the most important transmission mechanism of a tower crane. It requires heavy load at low speed, light load at high speed, and a large speed range. The advantages and disadvantages of the speed regulation method of the lifting mechanism directly affect the performance of the whole machine. Small and medium-sized tower cranes with a maximum lifting capacity of 4 tons or less are fiercely competitive, and their cost control is strict. In China, multi-speed motors are mainly used for variable pole speed regulation. The scheme is simple and can still meet the work needs.  Flat Top Tower Cranes  of 8t and 8t need better speed regulation performance. There are many speed regulation methods. There are three selection principles: first, they must be stable and the impact is small; secondly, they must be economical and reliable, in line with national conditions; Flat Top Tower Cranes 1.1 Gear reducer ...