A crane and its counterweight mechanism

A counterweight and crane technology, applied in cranes and other directions, can solve the problems of oil cylinder instability, oil cylinder leakage, flange welding and other problems, meet the requirements of shortening the full-load stroke, reducing synchronization, and solving the problem of oil cylinder instability. Effect

Active Publication Date: 2016-04-27
XUZHOU HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide a crane and its counterweight mechanism. The counterweight mechanism adopts a cylinder rod top-mounted oil cylinder, which reduces the stroke of the large load movement of the oil cylinder, improves the coupling efficiency, and solves the problem of oil cylinder instability, oil cylinder Problems of internal leakage and open welding of flanges

Method used

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  • A crane and its counterweight mechanism
  • A crane and its counterweight mechanism
  • A crane and its counterweight mechanism

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Embodiment Construction

[0044] The core of the present invention is to provide a crane and its counterweight mechanism. The counterweight mechanism adopts a cylinder rod top-mounted oil cylinder. The stroke of the load movement improves the coupling efficiency and solves the problems of cylinder instability, internal leakage of the cylinder and open welding of the flange.

[0045]In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] Please refer to Figure 2 to Figure 7 , figure 2 , image 3 Respectively, it is a front view and a side view of the appearance of a specific embodiment of the counterweight mechanism provided by the present invention; Figure 4 to Figure 7 respectively figure 2 The position relationship diagram of the oil cylinder shown in each stage of the hooking process.

[00...

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Abstract

The invention discloses a crane and a counterweight mechanism thereof. A cylinder rod of a counterweight oil cylinder of the counterweight mechanism is arranged above a cylinder barrel; the top end of the cylinder rod is connected with a winching bracket; and the cylinder barrel is connected with a counterweight block and a counterweight bottom plate. According to the counterweight oil cylinder with a structure that the cylinder rod is overhead, the cylinder rod only bears the weight of the winching bracket in a first stroke and a second stroke, a third stroke is less than the first stroke, and the weight born by the cylinder barrel is the sum of the weight of the counterweight block and the weight of the counterweight bottom plate, so that when the weight born by the counterweight oil cylinder is less, the stroke is larger, when the weight born is more, the stroke is smaller, the full-load stroke is shortened greatly, a requirement of a system on the synchronism is reduced effectively, and the hooking efficiency is improved greatly. In addition, a piston rod is subjected to a tensile force in a process that the counterweight oil cylinder lifts the counterweight block and the counterweight bottom plate to accomplish final hooking, so that the problem of the instability of the oil cylinder is solved basically, and the safe reliability of hooking operation is ensured.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a crane and a counterweight mechanism thereof. Background technique [0002] The counterweight mechanism is one of the important components of the crane as the counterweight when the crane is hoisted. Therefore, the counterweight mechanism plays a decisive role in the lifting performance of the crane. The balance weight mechanism generally includes a number of balance weights, balance weight bottom plate and winch support, and a balance weight oil cylinder for lifting the above three. The purpose of adjusting the balance weight can be achieved by adjusting the number of balance weights. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a balance weight mechanism in the prior art. [0004] In the existing technology, such as figure 1 As shown, the counterweight cylinder of the counterweight mechanism is a cylinder top-mounted cy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/74
Inventor 王守伟胡小冬王冬张伟龙赵磊任印美戚厚保
Owner XUZHOU HEAVY MASCH CO LTD
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