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Hoisting mechanism of nuclear power plant crane with fall-prevention manual device

A technology of manual device and lifting mechanism, which is applied in the direction of clockwork mechanism and hoisting device, etc. It can solve the problems of large space occupation, complex structure, and inability to automatically prevent the load from falling by itself, so as to achieve the effect of convenient disassembly

Active Publication Date: 2017-04-19
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this patented technology is that only when the manual device lifts the load, the operator's hands can be separated from the operating handle to automatically prevent the load from falling automatically. When the manual device lowers the load, it cannot automatically prevent the load from falling automatically.
In addition, the ratchet and pawl manual mechanism has a complex structure and takes up a lot of space.

Method used

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  • Hoisting mechanism of nuclear power plant crane with fall-prevention manual device
  • Hoisting mechanism of nuclear power plant crane with fall-prevention manual device
  • Hoisting mechanism of nuclear power plant crane with fall-prevention manual device

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] The lifting mechanism of a nuclear power plant crane with a fall-prevention manual device includes a motor 1, a reel set 2, a brake 3, a brake wheel coupling 4, a reducer 5 and a handle mechanism 22, and the motor 1 passes through the brake 3 and the reducer 5 connection, the two brake wheel couplings 4 are respectively connected between the motor 1 and the brake 3 and between the brake 3 and the reducer 5; the handle mechanism 22 includes a friction plate 6, a friction plate 17, a flange 8, a shaft sleeve 9, Key 10, fixed plate 11, fixed pin 12, friction plate II13, fixed flange 14, hand wheel 15, stop ring 16, disc spring 17, nut 18, spring 19, roller 20 and fixed seat 21, friction plate 6 is Circular plate, friction plate 6 has a central hole; fixed plate 11 is a circular plate, fixed plate 11 has a central hole, fixed plate 11 is provided wit...

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Abstract

The invention discloses a crane hoisting mechanism with an anti-falling type hand-operating device for a nuclear power station. The crane hoisting mechanism comprises an electric motor, a winding drum set, a brake, a brake wheel shaft coupler, a speed reducer and a handle mechanism, wherein a friction sheet I, a friction plate, a fixed plate, a friction plate and a friction sheet II of the handle mechanism are sequentially arranged on the shaft sleeve in a penetrating and sleeving mode; the shaft sleeve is arranged at the front section of a flange shaft sleeve of a flange in the sleeving mode; a central screw hole of the hand wheel is screwed in right-hand threads at the middle section of the flange shaft sleeve; a retainer ring is arranged at the rear section of the flange shaft sleeve of the flange in the penetrating mode; all parts are fixed together by virtue of a disc spring and a nut; springs is arranged between the external circumference of the fixed plate and a fixed flange; and the other end of the fixed flange is fixed on a fixed base through a pin roll. The crane hoisting mechanism has the beneficial effects that the load is prevented from automatically dropping, the structure is simple, the arrangement is convenient, the dismounting is convenient, and the same set of device can be used for multiple hoisting mechanisms.

Description

technical field [0001] The invention relates to a lifting mechanism of a crane in a nuclear power plant, in particular to an anti-falling type manual device. . Background technique [0002] The nuclear power plant fuel delivery crane is used to lift the fuel assembly of the nuclear power plant. The fuel assembly is a dangerous load. When the crane fails or the power is cut off during the hoisting process, it must be ensured that the fuel assembly can be placed in a safe place. Therefore, the lifting mechanism of this type of crane With manual mechanism. [0003] The patent number is: CN200520128465.1.A, and the patent document titled: "Manual Mechanism of Crane Hoisting Mechanism" discloses the structural form of this type of manual mechanism, which is a ratchet and pawl structural form. The disadvantage of this patented technology is: only when the manual device lifts the load, the operator's hand can automatically prevent the load from falling automatically after the ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/60B66D1/26B66D1/12B66D1/04
Inventor 苏冬徐宏伟
Owner DALIAN HUARUI HEAVY IND GRP CO LTD
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