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Crane and crane arm system thereof

A boom and crane technology, which is applied in the field of boom systems, can solve problems such as rear mast tilting forward, threats to crane operation safety, and component damage, and achieve the effects of preventing rear mast tilting forward, avoiding hazards, and good safety

Inactive Publication Date: 2013-04-24
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of engineering application, it was found that when the boom of this type of crane is extended or retracted, the rear mast 12 has a phenomenon of forward tilt (that is, the rear mast crosses the vertical plane when it rotates toward the front mast), and the rear mast is easy to tilt forward. Causes excessive stress on some parts of the boom system, which can cause damage to these parts, thereby jeopardizing the safe operation of the crane

Method used

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  • Crane and crane arm system thereof
  • Crane and crane arm system thereof

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Embodiment Construction

[0020] It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict. The following will be attached figure 2 Specific embodiments of the present invention will be described in detail.

[0021] In order to prevent the rear mast 2 of the boom system from tilting forward and to improve the safety of the crane, a specific embodiment of the present invention proposes a boom system, which includes a main boom, a luffing jib, a pulling component, and a front mast 4. The rear mast 2, the first connecting frame 6, the second connecting frame 3, and the forward roll prevention bar 1 arranged on the side of the rear mast 2 close to the front mast 4; the main boom and the luffing jib pass through the first connecting frame 6 and The second connecting frame 3 is hinged; one end of the anti-roll bar 1 is hinged to one of the first connecting frame 6 and the rear mast 2, and the other end is hinged...

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Abstract

The invention discloses a crane arm system thereof. The crane arm system comprises a principal arm, a luffing auxiliary arm, a traction part, a front mast, a rear mast, a first connection rack, a second connection rack, and a forward-tilt resistant rod which is arranged a rear mast side close to the front mast. The principal arm is hinged to the luffing auxiliary arm by the first connection rack and the second connection rack. One end of the forward-tilt resistant rod is hinged to one of the first connection rack and the rear mast and the other end of the forward-tilt resistant rod is in a slip connection relationship with the other one of the first connection rack and the rear mast. The forward-tilt resistant rod is used for preventing the rear mast in a preset position from rotating to the front mast. The crane arm system prevents a series of risks caused by rear mast forward-tilt in crane operation thereby guaranteeing crane operation safety. The invention also discloses a crane with the crane arm system.

Description

Technical field [0001] The invention relates to engineering machinery, in particular to a crane boom system. In addition, the present invention also relates to a crane with the boom system. Background technique [0002] With the rapid economic and social development, hoisting operations are developing in the direction of large-scale and large-scale, which puts forward higher and higher requirements for the performance of cranes that perform hoisting. [0003] Such as figure 1 As shown, a large crane usually includes a chassis 16 and a boom system provided on the chassis 16. The boom system includes a tie rod 14, a tie cable 15, a front mast 13, a rear mast 12, a main boom 10, and a luffing jib 11. , The first connection frame 17 and the second connection frame 18, the main boom 10 and the luffing jib 11 are hinged through the first connection frame 17 and the second connection frame 18, the rear mast 12 and the front mast 13 are respectively connected to the first connection frame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/64B66C23/88
Inventor 李礼曹争光姜成武
Owner SANY HEAVY IND CO LTD (CN)
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