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Shandong Huaxia tower crane, registered and established in Shandong / Weihai City in 1985, is now relocated to Linyi. Our company operates tower cranes in the mode of production and processing; Piling machine; Mixing station; Construction elevator; Tower crane, the processing method is incoming processing, the processing technology is machining, other mechanical hardware technology, assembly, and the service field is machinery; Hardware has more than 1000 employees and a registered capital of 90 million yuan. If you are interested in our products, technology or services, you are welcome to call or come to consult at any time.

Model QTZ250 (7030) tower crane with lifting torque of 250tm.Tower crane: the boom form of tower crane is divided into horizontal type and pressure bar type. When the boom is horizontal, the truck runs along the horizontal boom and the luffing motion is balanced. The boom is long, but the boom weight is large. When the boom is of compression bar type, the luffing mechanism leads the boom to pitch luffing. The luffing motion is not as stable as the horizontal type, but its self weight is small. The lifting capacity of the tower crane varies with the amplitude. The product of lifting capacity and amplitude is called load moment, which is the main technical parameter of this crane. Through the slewing mechanism and slewing ring, the tower crane has large lifting height and large inertia mass of slewing and walking, so it needs to have good speed regulation performance. In particular, the lifting mechanism is required to be fast under light load, slow under heavy load and micro motion in place. Generally, in addition to resistance speed regulation, eddy current brake, frequency modulation, pole changing, thyristor and electromechanical combination are often used for speed regulation.

QTZ40 tower crane is a new type of tower crane for construction. The machine is in the form of horizontal boom, trolley luffing and upward rotary hydraulic jacking; The working range is 45m-2m; The lifting capacity is 4T at quadruple rate and 2T at double rate; The rated lifting moment is 400kN m； The lifting height is 35m for independent use and 100m for attached use.     

Tower crane QTZ: refers to jack up tower crane. 50 indicates boom length, 50m; There are two main parameters expressed by tower crane model: one is the rated lifting torque, and the other is the maximum boom length and boom end lifting weight. Introduction to typical preparation method: the numbering method specified in the standard is implemented according to zbjo4008. The model composition of tower crane in China is: class group code + form + characteristic code + main parameter code.    

QTZ63 tower crane: it belongs to engineering machinery, and its model is represented by capital letters of Chinese pinyin. Q refers to crane, t refers to tower type, Z refers to jack up type, 63 refers to rated lifting torque of 630kn Meters. QTZ63 tower crane is also called tc5610 tower crane. QTZ63 tower crane is a multi-purpose tower crane with horizontal boom, trolley luffing, up slewing and self elevating fixed. It is widely used in the construction of high-rise hotels, residential buildings, high-rise industrial buildings, long-span factories and high tower buildings. It can also be used in the handling and loading and unloading operations of ports, docks and freight yards.  

It is the different naming of tower crane in different periods: QTZ: a common saying in the 1980s, Q refers to steel material (generally Q235), t refers to tower crane (mostly tower top type), and Z refers to jack up type, Pt: the naming method appeared in recent years. P refers to flat head (without tower top), t refers to tower crane, and 80 refers to lifting torque of 800 kn M 5510 is a front end crane with a 55m boom of 1t. The rated lifting torque is 80tm, and the nominal torque cannot be seen only by looking at this parameter. QTZ80 is only a parameter range during declaration, and its lifting torque is 80 ~ 100tm (excluding 100tm).

Qtz100 (tc6013) tower crane instruction manual qtz100 (tc6013) tower crane (hereinafter referred to as crane) is a new type of construction crane developed by Jinan Construction Machinery Co., Ltd. according to national standards. The machine is a multi-purpose crane with horizontal boom, trolley luffing and up swing. The standard arm length is 50 meters, the extended arm length can reach 55 meters and 60 meters, the maximum lifting capacity is 8 tons, and the rated lifting torque is 960 kn M, and the lifting torque is 1000 kn Meters. The main features of the machine are as follows: The climbing frame is mainly composed of frame, platform, hydraulic jacking device and standard section introduction device. The frame is sleeved outside the standard section of the tower body, and the upper end is connected with the lower support with bolts. It is 6.93m high and 2.3m in section × 2.3m is a frame structure composed of section steel and steel plate. In order to facilitate the safety needs of jacking installation, there is a special working platform. 16 adjustable rollers are installed on the inside of the climbing frame along the main chord of the tower body, which are supported on the outside of the main chord of the tower body. On the cross beam of the climbing frame, two padeyes are welded and hinged with the oil cylinder of the hydraulic system to bear the jacking load of the oil cylinder. The lower part of the climbing frame has two swing claws operated by the lever principle, which are used as the weight of the climbing frame to support the upper structure in the process of recovering the piston of the hydraulic cylinder and introducing the standard section. The upper and lower chords of the jib are square tubes welded by two angle steels. The whole jib has a triangular section, with a height of 1.2m, a width of 1.4m and a total length of 63.20m. It is divided into ten sections. The sections are connected by pins, which is convenient for disassembly and assembly. In order to improve the lifting performance and reduce the weight of the boom, the boom adopts double lifting points and variable section space truss structure. The trolley traction mechanism and hanging basket are placed at the first section of the jib to facilitate installation and maintenance. The first section at the root of the boom is connected with the slewing tower body with a pin shaft.

 Fushun Yongmao QTZ125 tower crane is a kind of up rotating fixed light tower crane, which can be widely used in various industrial and civil buildings, especially in construction sites with narrow site and complex terrain. There are three slewing and luffing mechanisms to improve the working efficiency of tower crane. The lifting mechanism adopts a two speed motor, which has two working speeds: lifting and slow in place, so as to meet different working needs. The jib can rotate 360 ° in both positive and negative directions, the horizontal boom, the trolley luffing, flexible and reliable, and the lifting in place is accurate. It can meet the needs of vertical and horizontal transportation in building construction at one time. The safety device of the crane is complete and reliable. It is equipped with reliable mechanical torque limiter and lifting capacity limiter. At the same time, it is also equipped with lifting height, working range and rotation limiter to ensure the safe operation of the tower crane. The machine has reasonable design, reliable quality, compact structure and convenient operation. It is an ideal lifting machine for the construction team.

QTZ tower crane(0ne) is the newest hoisting transportation machinery in china, making full use of GT. Combined design technology and FEA technology based on computer design platform of tower crane. QTZ tower crane(one) belongs to upper-swing hydraulic climbing tower crane with horizontal-jib, winch-jib. All kinds of performance parameters and technical items are up to or better than the National Standard. The max. radius is 55m. Freestanding height is 45m. Attaching load-lifting height is 151m. The rated load moment is 880 kN•m and the max. load moment is 1057.71 kN•m.