A tower crane equipped with a movable counterweight system
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A tower crane and counterweight technology, applied in cranes and other directions, can solve problems such as heavy additional balance, and achieve the effects of good stress condition, flexible speed control and small impact
Active Publication Date: 2016-02-24
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Aiming at the problem of large additional balance weight of super-large tonnage mobile cranes, this invention proposes a link mechanism to adjust the position of the balance weight
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[0036] Below in conjunction with the accompanying drawings, the tower crane for erecting iron tower construction equipped with a movable counterweight system of the present invention will be further described in detail.
[0037] like figure 1 , Figure 4 As shown, a special-purpose tower crane for erecting a transmission line iron tower equipped with a movable counterweight system according to an embodiment of the present invention mainly includes: a steel structure base 1, a jacking frame 2, and a tower body 3. Attachment frame 4, attachment wire rope 5, slewing support device 6, boom 7, hook 8, tower head 9, cable 10, balance arm 11, movable counterweight system 12, boom luffing mechanism 13, Lifting mechanism 14 and control room 15.
[0038] The steel structure base 1 is welded by section steel and steel plate, and installed on the concrete cap. Anchor bolts are pre-embedded when the concrete cap is cast, and the steel structure base 1 and the concrete cap are connected ...
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Abstract
An assembled tower type crane with a movable counter-weight system comprises a steel structure base (1), a lifting sleeve frame (2), a tower body (3), an attachment frame (4), an attachment wire rope (5), a rotary supporting device (6), a boom (7), a lifting hook (8), a tower head (9), a pull rope (10), a balance arm (11), a boom amplitude changing mechanism (13), a lifting mechanism (14), a control chamber (15) and the movable counter-weight system (12). The counter-weight system (12) comprises a counter-weight (21), a counter-weight bearing trolley (22), a counter-weight traction mechanism (23), a traction wire rope (24), a steering pulley (25) and a control system (26). The counter weight bearing trolley (22) bears the counter-weight (21) to move along the balance arm (11). The movable counter-weight can reduce unbalanced torque on the tower body, improve the stress condition of the tower body, enhance the hoisting capacity of the tower crane or reduce the sectional size and the weight of the tower body with the same hoisting capacity, thereby reducing the processing cost and facilitating transportation, mounting, dismounting and on-site carrying. The prevent invention has the advantages of small structural size and light weight of the tower body, high safety, flexibility in lifting, high construction efficiency and the like, and can meet an assembling requirement on all types of power transmission line iron towers with various voltage levels.
Description
technical field [0001] The invention belongs to the field of construction equipment for overhead transmission lines, and in particular relates to a special tower crane installed with a movable counterweight system for erecting transmission line iron towers. Background technique [0002] The erection construction of poles and towers is a construction link with heavy workload, high construction difficulty and many risk factors in the construction of transmission lines. At present, large mobile cranes or helicopters are mainly used for tower construction in foreign countries. For example, the United States, Canada and other countries have generally used large mobile cranes or helicopters for tower construction, while the main equipment for domestic tower construction is various forms of poles. The poles for power transmission and transformation construction (including single poles, rocker poles, etc.) are light and small lifting equipment. They are simple lifting equipment comm...
Claims
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Application Information
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