Crane and super-lift winch locking mechanism thereof
A locking mechanism, a crane technology, applied in the direction of a crane, etc., can solve the problems such as the inability to achieve the tension effect, the inability to work, and the inability of the super-lift hoist 21 to be in a locked state, etc.
Active Publication Date: 2014-02-05
XUZHOU HEAVY MASCH CO LTD
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Problems solved by technology
However, the original super-lift hoisting locking mechanism relies on the action of the pre-tightening oil cylinder 11. After the pre-tightening oil cylinder 11 is arranged inside the super-lifting jib, the original super-lifting hoisting locking mechanism will not work, and the super-lifting hoisting locking mechanism will not work. The winch 21 cannot be in the locked state, so the tensioning effect cannot be achieved when the front pull rope is lifted
Method used
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[0034] The core of the present invention is to provide a crane and its super-lift winch locking mechanism. The locking mechanism does not depend on the pre-tightening oil cylinder, and can lock the super-lift winch during the tensioning process of the stay rope before super-lift. Prevent super lifting winch from reversing.
[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For ease of understanding and concise description, the following description will be made in conjunction with the crane and its super-lifting winch locking mechanism, and the beneficial effects will not be discussed repeatedly.
[0036] Please refer to figure 2 , figure 2 It shows the structural diagram of the crane after the stay rope is tensioned before super-lifting.
[0037] When the crane is working unde...
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The invention discloses a crane and a super-lift winch locking mechanism thereof. The locking mechanism comprises a control oil cylinder and a locking bracket, wherein the locking bracket is hinged to a super-lift winch bracket; a fixed end of the control oil cylinder is connected with the super-lift winch bracket; a movable end of the control oil cylinder is connected with the locking bracket; the control oil cylinder drives a pawl of the locking bracket to be clamped into or released from ratchets of a super-lift winch by the retraction of the movable end of the control oil cylinder. With the adoption of the design, the locking mechanism of the super-lift winch does not depend on a pre-tightening oil cylinder for tensioning a super-lift front pull rope; the control oil cylinder drives the pawl of the locking bracket to be clamped into or released from the ratchets of the super-lift winch so as to realize locking or unlocking of the super-lift winch; the locking mechanism does not depend on the pre-tightening oil cylinder so that a setting position is not limited and can be applicable to the super-lift winch brackets with different structures.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a crane and its super-lift winch locking mechanism. Background technique [0002] Please refer to figure 1 , figure 1 It is a structural schematic diagram of the tensioning system before overlifting of the current crane. [0003] As shown in the figure, the tensioning system before super-lifting includes a super-lifting winch 21, a pre-tightening oil cylinder 11, a control cylinder 12 and a return spring 13; Ratchet; the pre-tightening oil cylinder 11 is fixed on one side of the super-lift winch 21, and its movable end is provided with a push shaft 11a, which can be locked or disengaged from the ratchet 21a of the ratchet; the control oil cylinder 12 and the return spring 13 They are all arranged between the pre-tightening oil cylinder 11 and the super-lift winch support 22. [0004] When the main boom of the crane is over-lifted, the stay rope stretches out wit...
Claims
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Login to View More IPC IPC(8): B66C23/62B66C23/64
Inventor 兰天佟雪峰杨敏
Owner XUZHOU HEAVY MASCH CO LTD