Trussed marine platform crane variable-amplitude limiting mechanism
An offshore platform and limit mechanism technology, applied in cranes and other directions, can solve the problems of luffing hydraulic upper limit failure, safety accidents, falling and other problems, and achieve the effects of good reliability, high safety and convenient installation.
Inactive Publication Date: 2014-03-19
无锡起岸重工机械有限公司
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Problems solved by technology
[0002] In the prior art, the luffing upper limit of the truss-type offshore platform crane usually uses a single hydraulic limit; If personnel fail to discover the failure of the upper limit of the luffing hydraulic pressure in time, and continue to perform luffing operations, the entire boom will tilt backward due to its own weight and fall, causing major safety accidents and seriously threatening the safety of ships and personnel
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[0014] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.
[0015] Such as figure 1 , figure 2 and image 3 As shown, the luffing limit mechanism of the truss-type offshore platform crane in this embodiment includes an A-frame 1 and a boom 4, and a limit rod 2 is horizontally connected between the A-frame 1 and the boom 4, and the lower part of the limit rod 2 A diagonal strut 3 is connected with the A-frame 1; the structure of the limit rod 2 is: one end of the limit rod 2 is connected with the eye plate of the A-frame 1 through the first hinge pin 5, and the limit rod 2 The other end is inserted with a buffer socket. The structure of the buffer socket is as follows: a baffle 7 is arranged in the limit rod 2, a buffer seat 8 is horizontally installed on the baffle 7 through bolts 6, and a buffer pin 10 is installed in the buffer seat 8. There is a step on the buffer seat 8, the first step surf...
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A trussed marine platform crane variable-amplitude limiting mechanism comprises an A-shaped frame and a lifting arm, a limiting rod is horizontally arranged between the A-shaped frame and the lifting arm, and connects the A-shaped frame and the lifting arm, the lower part of the limiting rod is connected to the A-shaped frame through a diagonal brace; wherein the structure of the limiting rod is that: one end of the limiting rod is connected to the ocular plate of the A-shaped frame through a first hinge pin, the other end of the limiting rod inserts into a buffer socket; the structure of the buffer socket is that: a baffle plate is arranged in the limiting rod, a buffer seat is horizontally arranged on the baffle plate through a bolt, a buffer pin is arranged in the buffer seat, steps are arranged on the buffer seat, the first step of the buffer seat is fixed on the end surface of the limiting rod through a round nut, the buffer pin is arranged in the second step of the buffer seat and is provided with buffer rubber, and the external end of the buffer pin is connected to a buffer head; and the structure of the diagonal brace is that: one end of the diagonal brace is connected to the A-shaped frame through a second high pin, the other end of the diagonal brace is provided with a connecting ring, and the connecting ring is connected to a hinge ocular plate arranged in the bottom of the limiting rod. The trussed marine platform crane variable-amplitude limiting mechanism is safe and reliable.
Description
technical field [0001] The invention relates to the field, in particular to a luffing limit mechanism of a truss type offshore platform crane. Background technique [0002] In the prior art, the luffing upper limit of the truss-type offshore platform crane usually uses a single hydraulic limit; If personnel fail to discover the failure of the upper limit of the luffing hydraulic pressure in time and continue to perform luffing operations, the entire boom will tilt backward and fall due to its own weight, causing major safety accidents and seriously threatening the safety of ships and personnel. Contents of the invention [0003] Aiming at the shortcomings in the above-mentioned existing production technology, the applicant provides a truss-type offshore platform crane with a reasonable structure to prevent the tilting and falling of the boom when the upper limit of the hydraulic pressure is out of order. The working reliability is improved, and the safety factor is high. ...
Claims
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IPC IPC(8): B66C23/88
Inventor 胡江梁磊
Owner 无锡起岸重工机械有限公司