We are one of the largest and most professional crane manufacturers in China, with total sales of more than 1.6 billion US dollars last year, including sales of 11,000 sets of double-beam and gantry cranes, more than 73,000 sets of single-beam cranes, and more than 100,000 sets of electric hoist and accessories.
We have an advanced, green, whole-industry chain, intelligent manufacturing industrial park, with an investment of 370 million US dollars and more than 4,700 employees, which has been established for more than 20 years.
Bridge Crane of Double Beam KSSLQ-02.
Single-beam bridge crane and double-beam bridge crane are more common material handling lifting equipment, double-beam bridge crane needs to be equipped with end beams at both ends, so that the lifting equipment can run better. Picture 1 shows part of the end beams produced by our factory, and the other part is the main beam part. These parts are about to be finished and shipped to customers around the world.
Rotating device
(1) Rotating platform The rotating platform, also known as the upper frame, is the foundation for the installation and connection of the power unit and various working devices. The front part of the platform is equipped with the boom and control system, the middle and rear parts are equipped with the diesel engine and the double-foot support frame for the fixed luffing mechanism, and the lower surface is equipped with the upper seat ring of the rotating support device. The rear part is equipped with counterweight boxes (blocks).
(2) Rotating support The rotating support not only completes the rotating operation but also transmits the various loads on the upper part to the lower support frame. When the rotating platform rotates, it maintains the balance of the machine body.
(3) Rotating mechanism In mechanical cranes, the cylindrical gear at the lower end of the main transmission device's vertical shaft meshes with the rotating transmission gear, and through the clutch, it drives the rotating pinion to rotate along the rotating gear, causing the rotating platform to rotate accordingly. In hydraulic cranes, the hydraulic motor drives the rotating pinion through a set of reduction gears to achieve the rotation of the machine body.
5. Traveling system
The function of the traveling system of a crawler crane is to support the machine body and enable the crane to travel, as well as perform the traveling, forward, backward, and turning movements required for operations. The traveling system of a hydraulic crawler crane includes: lower frame, telescopic hydraulic cylinder, traveling hydraulic motor, planetary reducer; driving wheel, supporting wheel, idler wheel, tensioning wheel (guide wheel), track (commonly known as four wheels and one belt); tensioning mechanism. The four wheels and one belt and the tensioning device are all installed on the track frame.
The structure of the traveling system of mechanical or electric crawler cranes is similar to that of hydraulic crawler cranes. The difference is that the mechanical traveling transmission is driven by the upper mechanical transmission mechanism through the traveling vertical shaft, via a bevel gear pair, and then through the left and right sprockets and chains (or reducers) to rotate the driving sprocket, dragging the track to roll. On the horizontal bevel gear and sprocket shaft, there is a dog clutch to control the straight travel and left and right turns of the track.
(1) Lower frame (traveling frame) The lower frame is the connecting component between the rotating platform and the bogie frame (track frame). Its function is to transfer all or part of the machine body weight through the track frame to the supporting wheels, and then to the ground through the track. The lower frame is composed of the underframe, crossbeam, and track frame. The lower frame can be divided into two types: combined and integral. The integral type is widely used due to its good rigidity. For the transportation convenience of super-large crawler cranes, they are often designed as combined types, and some are designed as extendable types in the transverse direction. The frame can be classified into elastic suspension, semi-rigid suspension, and rigid suspension. When the entire machine body weight is transmitted to the supporting wheels through elastic elements, it is called an elastic frame; when part of the weight is transmitted to the supporting wheels through elastic elements and the other part through rigid elements, it is called a semi-rigid frame; when the entire machine body weight is transmitted to the supporting wheels through rigid elements, it is called a rigid frame. For crawler cranes with lower traveling speeds, to ensure operational stability, semi-rigid or rigid frames are usually adopted.
(2) Track The function of the track is to support the entire weight of the crane and ensure that the vehicle has sufficient driving force. The track is composed of dozens of track plates and chain rails and other parts. The structure of the track is basically divided into four parts: the bottom is the supporting surface, the top is the chain rail, the middle is the part that meshes with the driving sprocket, and the ends are the connecting hinges. According to the different structures of the track plates, they can be divided into integral and combined types. Integral track plates have a simple structure, are easy to manufacture and assemble, and are relatively light in weight. All mechanical cranes use cast steel flat integral track plates. Combined track plates have the advantage of convenient replacement of parts. When a part is damaged, only that part needs to be replaced, without scrapping the entire track plate. At the same time, the combined track has a smaller plate pitch, which can reduce the impact and wear of the track chain on each wheel and increase the traveling speed. All hydraulic crawler cranes use short-ribbed rolled combined track plates.
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