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On-load luffing boom lifting apparatus

A technology for lifting devices and booms, which is applied to cranes and other directions, can solve the problems that the length of booms cannot be adjusted according to needs, and the length of booms of tower cranes cannot be adjusted according to needs, so as to protect the service life and reduce The possibility of collapse and the effect of good stability

Inactive Publication Date: 2017-04-05
四川宇盛智创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the length of the boom of the existing tower crane cannot be adjusted according to the needs, and the purpose is to provide a workpiece positioning and clamping device to solve the problem that the boom length of the existing tower crane Issues that need to be adjusted

Method used

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  • On-load luffing boom lifting apparatus

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Effect test

Embodiment

[0021] Such as figure 1 As shown, the present invention is a boom lifting device capable of variable amplitude with load, comprising a base 11, a tower body 4 is arranged above the base 11, and a tower top 5 is arranged at the top of the tower body 4, so that An operation room 3 is arranged between the tower body 4 and the tower top 5, and the balance arm 2 and the lifting arm are respectively arranged on both sides of the operation room 3, and the extension of the balance arm 2 and the lifting arm The ends are respectively connected to the tower top 5 through tie rods. The balance arm 2 is provided with a counterweight traveling device 1. The boom includes the first boom 6 and the second boom 7, both of which are connected to the top of the tower through the tie rods. 5 connection, the second boom 7 is slidingly connected to the first boom 6, and a rotating device is provided at the maximum sliding displacement. The balance arm 2 and the lifting arm are fixedly connected wit...

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Abstract

The invention discloses an on-load luffing boom lifting apparatus. The apparatus includes a pedestal, a crane body is arranged above the pedestal, a crane top is arranged at the top end of the crane body, an operating room is arranged between the crane body and the crane top, a balancing arm and a boom are respectively arranged at two sides of the operating room, the protruding ends of the balancing arm and the boom are respectively connected with the crane top through pull bars, a weight running device is arranged on the balancing arm, the boom comprises a first boom and a second boom which are connected with the crane top through ropes, the second boom is in sliding connection with the first boom, and a rotating device is arranged at a maximum sliding displacement position. The balancing arm and the boom are fixedly connected with the operating room. A mobile dolly with the bottom connected with a lifting hook body is arranged on the second boom. The mobile dolly is connected with a pulley arranged on the boom, and a noise reduction sleeve sleeves the surface of the pulley.

Description

technical field [0001] The invention relates to a lifting arm device, in particular to a lifting arm lifting device capable of variable amplitude with load. Background technique [0002] Tower crane is the most commonly used lifting equipment on construction sites, also known as tower crane. Tower crane is an indispensable equipment on the construction site. The function of the tower suspension tip is to bear the upper load from the jib stay rope and the balance jib stay rope, and transmit it directly to the tower body structure through the turntable through the structural components such as the slewing tower, turntable, and bearing. The top of the self-elevating tower has a truncated cone column type, a forward or backward inclined truncated cone column type, a herringbone frame type and a diagonal brace type. All upper slewing tower cranes need to be equipped with a balance weight, whose function is to support the balance weight to form the balance moment required by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/06B66C23/687B66C23/62
CPCB66C23/06B66C23/62B66C23/701
Inventor 张全军
Owner 四川宇盛智创科技有限公司
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