An integral overweight limiter for cranes
An integral, limiter technology, used in transportation and packaging, load hanging components, safety devices, etc., can solve the problems of large capital investment, complex structure, spring failure, etc., and achieve the effect of simple structure and good weight limit effect.
Active Publication Date: 2020-09-29
JIANGSU SIDA HEAVY IND
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Problems solved by technology
[0002] In the prior art, the integral overweight limiter for cranes realizes the weight limit by means of electronic or mechanical springs. The structure of the electronic method is complicated, and the capital investment is large. The mechanical spring method is used, and the spring is prone to failure due to excessive force during use. Replacement Inconvenient, so an integral overweight limiter for cranes is needed to solve the above problems
Method used
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specific Embodiment approach
[0018] Specific implementation: the user transports the high-pressure gas to the inside of the cylinder 21 on the lower side of the piston disc 22 through the air pipe 28, and the user connects the heavy object to be lifted with the hook 3. During the process of connecting the heavy object, the heavy object A downward pulling force is generated on the hook 3, so that the hook 3 moves downward, the movement of the hook 3 drives the boom 23 to move, the movement of the boom 23 drives the piston disc 22 to move downward, and the movement of the piston disc 22 makes the lower side of the piston disc 22 move downward. The internal volume of the cylinder 21 decreases, so the pressure of the high-pressure gas inside the cylinder 21 increases. At the same time, the piston disc 22 drives the indicator rod 29 to move downward. The user observes the scale line on the indicator rod 29. When the scale line moves to the predetermined position, just stop connecting the heavy objects. When the...
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The invention provides an overall overweight limiter for a crane. The overall overweight limiter for the crane comprises a cylinder, a piston disc, a lifting rod, a through hole, a plug plate, a firstfixed ring, a second fixed ring and an air pipe; the piston disc is assembled in the cylinder; the lifting rod is connected to the lower end surface of the piston disc; the lower end of the lifting rod penetrates through the through hole, and is connected with the lifting hook; a sealing ring is mounted on the annular side surface in the through hole; the inner side of the annular side surface ofthe sealing ring is tightly bonded with the annular side surface of the lifting rod; the through hole is formed in the middle position of the lower end surface of the plug plate; the first fixed ringis fixed in the upper edge position of the annular side surface of the plug plate; the first fixed ring is fixed in the lower edge position of the annular side surface of the cylinder; the first fixed ring is connected with the second fixed ring through a bolt; the air pipe is mounted in the lower position of the left end of the annular side surface of the cylinder; and a sealing plug is assembled in the air pipe. Through the design, the purpose of limiting the weight through high-pressure gas is achieved; and the overall overweight limiter for the crane is simple in structure, convenient tooperate, excellent in weight limiting effect and high in reliability.
Description
technical field [0001] The invention is an integral overweight limiter for a crane, which belongs to the field of hoisting machinery equipment. Background technique [0002] In the prior art, the integral overweight limiter for cranes realizes the weight limit by means of electronic or mechanical springs. The structure of the electronic method is complicated, and the capital investment is large. The mechanical spring method is used, and the spring is prone to failure due to excessive force during use. Replacement It is inconvenient, so a kind of integral overweight limiter for cranes is needed to solve the above-mentioned problems. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an integral overweight limiter for cranes to solve the problems raised in the above-mentioned background technology. The present invention has simple structure, easy operation, good weight limiting effect and high rel...
Claims
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IPC IPC(8): B66C15/00
CPCB66C15/00
Inventor 解晓莉
Owner JIANGSU SIDA HEAVY IND