Cranes and their super-lifting devices
A technology for super-lifting devices and cranes, which is applied to cranes and other directions, and can solve problems such as poor stability and difficulty in disassembly and assembly, and achieve the effects of reducing weight, improving reliability and work efficiency, and lowering the center of gravity
Active Publication Date: 2015-08-12
SANY HEAVY IND CO LTD (CN)
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Problems solved by technology
[0008] In view of this, the present invention proposes a crane and its super-lifting device. The super-lifting device can separate the super-lifting winch and the super-lifting support, and set the super-lifting winch at a lower position such as the turntable of the crane to solve the problem of super-lifting. Problems such as difficulty in disassembly and assembly and poor stability caused by the high center of gravity of the lifting device
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[0040] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0041] Attached below Figure 1-6 , and the super-lifting device is set on the crane as an example, and the embodiments of the present invention are described in detail:
[0042] Such as figure 1 As shown, the present invention provides a kind of super-lifting device, and it is used for crane, comprises super-lifting support 7, super-lifting winch 3 and tension member 8, and wherein, super-lifting winch 3 is arranged on the turntable 2 of described crane On; Tension parts 8 are simultaneously connected with the top of the main jib frame 11 of the super lifting winch 3 and the crane; the first end of the super lifting bracket 7 is used to be hinged to the main jib frame 11 of the crane, and the ...
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The invention discloses a crane and a guying device thereof. The guying device is used for the crane and comprises a guying support, a guying winch and a tensioning part, wherein the guying winch is arranged on a rotary table of the crane or at a tail of a main arm support of the crane, the tensioning part is simultaneously connected with tops of the guying winch and the main arm support of the crane, a first end of the guying support is used for being hinged to the main arm support of the crane, and a second end of the guying support is used for supporting the tensioning part. The guying winch is arranged on the rotary table and is not arranged integrally with the guying support, so that weight of the guying support positioned at a higher position is reduced, the center of gravity of the guying device is lowered, stability and hoisting performance of the guying device are improved, the guying device, especially the guying support is more convenient for dismounting and mounting, and reliability and working efficiency of the guying device are improved.
Description
technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane and a super-lifting device thereof. Background technique [0002] Due to the needs of the market, wheeled cranes are constantly developing in the direction of large tonnage and super large tonnage. With the continuous increase of crane tonnage and hoisting height, the requirements for the length, strength and stiffness of the boom are also getting higher and higher. At present, the large-tonnage cranes on the market use super-lifting devices in order to increase the stiffness of the boom and reduce deflection and side bending. There are two types of super-lifting devices: door type and Y-type, and its structure generally has: a first tensioning device, a second tensioning device, a bracket rotating device, and a super-lifting luffing cylinder. There is a ratchet mechanism on the bracket, that is, super hoisting. There are usually three options for the super hoisting ...
Claims
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IPC IPC(8): B66C23/62
Inventor 刘会敏陆进添刘木南
Owner SANY HEAVY IND CO LTD (CN)