Automatic rail mounted gantry crane

The automatic rail mounted gantry crane is composed of a combined structure, a large combined structure and a small combined structure. It has the characteristics of small size, light weight, fast speed and wide application. For the design of portal crane, we must carefully do the basic selection work. First, we should select the main functions of the portal crane from the main functions. For example, the portal crane is mainly used for lifting, and some select the impact capacity of the portal crane. The greater the impact capacity, the better. This can not be selected only from the aspects of safety and stability coefficient and reliability, The safety and stability coefficient of gantry cranes should be emphasized. Some cranes have high safety and stability coefficient and high slewing number, but the speed is not fast. For example, some cranes such as 10-40 are too slow. How about the braking force of gantry cranes? How to calculate the number of revolutions? How to choose stability? Then, good stability can be selected from the aspects of stability, reliability, high power and large bearing capacity, which is good stability of body damping equipment, body support, structural parts and other accessories, and stable bearing capacity. Besides, the stability of the gantry crane mainly includes the stability of the door head, the stability of the unit, the stress loss of the engine connector and the door head fixing bolt, the stress problem of the door head fixing pin, and the selection and fixation of the door head soft connection and counterweight. For structural parts, the impact strength, stiffness, impact life, etc. of the lifting device must be considered. For the selection of the head fixing pin, the structural part fixing must be consistent with the sealing of the head fixing pin. Some manufacturers may say that the head fixing pin 5a is better, but are you sure that the head fixing pin 5a will not have cooling problems? One problem with the door head fixing pin is the nut positioning. After the impact force, the gantry crane will have some stress loss, and the natural stability coefficient is much worse. Therefore, the head fixing parts must match the stress of the head fixing pin, better match the size positioning of the head fixing pin, match the counterweight, and then match the stability. The reliability is mainly the rubber protection of the door head. When the impact force of the door head impacts the output signal of the controller through the motor, it is necessary to dynamically control the force and time. At this time, the reliability of the head is very important. A reliable head is to ensure a continuous time, that is, to control the output speed and force of the motor during the impact. The force is adjusted by the trigger, and will not produce excessive force, Send out violent impact force. At the back is the number of turns, which is related to the load-bearing capacity of the door. Basically, the higher the number of turns, the better the gantry crane. For other functions, such as load capacity, gantry crane manufacturers will say that there is a safety belt, but how is the safety belt installed? The safety belt can not only have a location on both sides of the door, but also have an impact on the door. On the one hand, for small combined portal cranes, such as 10 meters of doors, the load may be more, so the safety belt may be longer, and then the number of turns. Small combined portal cranes, such as axle racks, will have a rotation to ensure more impact and protect goods in a stable position, Then the bearing may need to be higher. Therefore, all factors should be considered.