Tower crane as well as trolley thereof, and rope winding ratio change method thereof
A technology for tower cranes and magnification changes, which is applied to cranes, load blocks, transportation and packaging, etc., and can solve problems such as reducing the lifting capacity of tower cranes
Active Publication Date: 2013-08-07
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
[0003] The present invention aims to provide a tower crane, its trolley and a method for changing the magnification of the rope, so as to solve the problem that the pulley body in the prior art will reduce the lifting capacity of the tower crane when the magnification is small
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[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0030] As a first aspect of the present invention, a trolley of a tower crane is provided. like Figure 3 to Figure 8 As shown, the trolley includes: a mobile carrier 10, which moves along the boom of the tower crane between the working position and the hook dismounting position; a lifting unit 20, which is fixedly arranged on the hook At the disassembly position; the pulley body 30 can be disengaged, and the pulley body 30 can be selectively connected with the mobile platform 10 or the lifting unit 20; the hook upper hanging body 34; the hook lower hanging body 40, the hook upper hanging Body 34, hanging body 40 under the hook, detachable pulley body 30 and mobile platform 10 are connected by the hoisting wire rope 50 of the tower crane; The dire...
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The invention provides a tower crane as well as a trolley of the tower crane, and a rope winding ratio change method thereof. The trolley comprises a mobile platform deck, a lifting unit, a separable pulley body, a lifting hook upper hanging body and a lifting hook lower hanging body, wherein the mobile platform deck moves between a working position and a lifting hook dismounting and mounting position along a crane boom of the tower crane; the lifting unit is fixedly arranged at the lifting hook dismounting and mounting position; the separable pulley body is connected with the mobile platform deck or the lifting unit selectively; the lifting hook upper hanging body is detachably connected with the separable pulley body; the lifting hook upper hanging body, the lifting hook lower hanging body, the separable pulley body and the mobile platform deck are connected by a hoisting wire rope of the tower crane; when the mobile platform deck is located at the lifting hook dismounting and mounting position, the lifting unit can extend out towards the mobile platform deck, and is connected with the separable pulley body; and the separable pulley body can be lifted upwards and separated from the mobile platform deck. According to the tower crane, the trolley and the rope winding ratio change method, the lifting capacity of the tower crane can be improved.
Description
technical field [0001] The invention relates to the field of cranes, and more specifically, to a tower crane, a trolley thereof, and a method for changing roping ratio. Background technique [0002] figure 1 A schematic diagram of a jib and a trolley of a tower crane in the prior art is shown. like figure 1 and figure 2 As shown, the trolley includes a mobile stage 10, a pulley body 30', an upper hook body 34' and a lower hook body 40, a mobile stage 10, a pulley body 30', a hook upper body 34' and a hook The hanging body 40 is connected by a hoisting wire rope 50 and can slide on the boom 60 . Wherein, the pulley body 30' is fixedly connected with the mobile carrier 10. When changing to a smaller magnification, the pulley body 30 ' moves together with the trolley as a whole, but a part of the pulley body does not work, which will reduce the lifting capacity of the tower crane and limit the improvement of the lifting capacity. Wherein, the weight of a part of the pull...
Claims
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IPC IPC(8): B66C23/16B66C23/62B66C11/00
Inventor 曾祥斌
Owner ZOOMLION HEAVY IND CO LTD