A kind of crane hoisting overweight protection pulley block
A technology of pulley blocks and cranes, which is applied in safety devices, transportation and packaging, and load hanging components, etc. It can solve problems such as the inability to adjust the protection threshold of the sling specification, and the inability to protect the overweight of unknown objects, achieving a wide range of applications and increasing safety. Effect
Active Publication Date: 2021-11-02
江苏思克赛斯机械制造有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem in the prior art that it is impossible to perform overweight protection when hoisting unknown objects, and the protection threshold cannot be adjusted according to the specifications of the sling, and a crane hoisting overweight protection pulley block is proposed
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[0018] refer to figure 1 , figure 2 with image 3 , a crane hoisting overweight protection pulley block, including a pulley block frame 1 assembled on the boom, two sliding holes 12 are symmetrically opened on the side wall of the pulley block frame 1, and a wheel shaft sliding sleeve 2 is slidably installed in each sliding hole 12 The two axle sliding sleeves 2 rotate together and are inserted with an induction shaft 21, an induction pulley 22 is installed on the induction shaft 21, two feedback mechanisms 3 are symmetrically installed on the outer wall of the pulley block frame 1, and the pulley block frame 1 is fixedly installed with Protector 4, see figure 2 , image 3 with Figure 4 , each feedback mechanism 3 includes a hydraulic plate 31 fixed on the side wall of the block frame 1, each hydraulic plate 31 is provided with a hydraulic channel 32, and the two ends of each hydraulic channel 32 extend to the upper end of the hydraulic plate 31 , the upper end of each...
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The invention discloses a crane hoisting overweight protection pulley block, which includes a pulley block frame assembled on a boom, two sliding holes are symmetrically opened on the side wall of the pulley block frame, and a wheel shaft is slidably installed in each of the sliding holes Sliding sleeves, the two axle sliding sleeves rotate together and are inserted with induction shafts, induction pulleys are installed on the induction shafts, and two feedback mechanisms are symmetrically installed on the outer wall of the pulley block frame, inside the pulley block frame A protective mechanism is fixedly installed. By converting the force of the sling into the displacement for detection, and converting the displacement into the pressure physical quantity that changes the on-off state, it will disconnect the lifting control during overweight lifting, protect heavy objects from being hoisted dangerously, and increase the safety of hoisting It is flexible, and can adjust different protection thresholds according to different slings, and has a wide range of applications.
Description
technical field [0001] The invention relates to the field of crane pulley blocks, in particular to a crane hoisting overweight protection pulley block. Background technique [0002] Most of the existing crane pulley blocks are labor-saving pulley blocks with movable pulleys and fixed pulleys, which can only reduce the lifting force, but cannot reduce the tension on the sling. It will cause a dangerous accident of sling breakage, and the existing pulley block cannot protect the overweight hoisting, and the protection threshold cannot be changed for different slings. Contents of the invention [0003] The purpose of the present invention is to solve the problems in the prior art that it is impossible to perform overweight protection when hoisting unknown objects, and the protection threshold cannot be adjusted according to the specifications of the sling, and proposes a crane hoisting overweight protection pulley block. [0004] In order to achieve the above object, the pre...
Claims
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IPC IPC(8): B66C15/00B66C13/16
CPCB66C15/00B66C13/16
Inventor 奚乐
Owner 江苏思克赛斯机械制造有限公司