Single-phase electric gourd with lower bound range stop
A technology of electric hoist and limiter, which is applied in the direction of clockwork mechanism and hoisting device, which can solve the problems of falling heavy objects, potential safety hazards, and no lower limit stroke limiter.
Inactive Publication Date: 2009-02-11
BADA MECHANICAL & ELECTRICAL
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Problems solved by technology
[0002] Single-phase electric hoist is a kind of lifting equipment that is widely used. The single-phase electric hoist that appears and reports on the market and data mainly includes a shell, a reel arranged inside the shell, and a wire rope that is wound and matched with the reel. The motor reducer and the upper limit device that drive the reel to rotate, when the equipment lowers the heavy object, after the steel wire rope on the reel is exhausted, because the lower limit travel limiter is not set, if the control parts cannot be controlled in time, the motor will not If the operation is stopped in time, the reel will continue to rotate, and if the steel wire rope is wound on the reel in the opposite direction, the heavy object will rise instead, causing damage to the upper limit device, and when the steel wire rope on the reel is exhausted, the heavy object has not yet landed. Heavy objects may fall due to insufficient fastening force at the end of the wire rope, which poses a great safety hazard
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[0013] Such as figure 1 , figure 2 and image 3 As shown, a single-phase electric hoist with a lower limit stroke limiter includes a housing 1, a reel 2 placed inside the housing 1, a reducer 3, a motor 4 for driving the reel 2 to rotate, and a control component 5 , the wire rope 6 wound on the reel 2, the upper limit device 7, the lower limit device 8 and the stroke limiter 9. The lower limit device 8 includes a micro switch 81, a micro switch slider 82, an action transmission head 83, a guide rod 84 and a spring 85 that cooperate with the micro switch assembly to control the rotation of the motor 4, and one end of the guide rod 84 It is placed on the corresponding side of the stroke limiter 9 and extends to the corresponding position close to the memory cam 91. The middle section extends to the position corresponding to the two partitions 21 of the reel 2 to the position close to the two partitions 21 of the reel, and the other end is connected to the action transmission ...
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The invention relates to a single-phase electric hoist used in a hoisting apparatus, in particular to a single-phase electric hoist with a lower limit travel limiter. The single-phase electric hoist adopts the following technical proposal: the single-phase electric hoist with the lower limit travel limiter comprises a housing, a winding drum arranged in the housing, a speed reducer, a motor, operating and controlling parts, a steel wire rope wound on the winding drum, an upper limit device, a lower limit device and a travel limiter. The single-phase electric hoist is characterized in that: the lower limit device and the travel limiter are arranged on the single-phase electric hoist; the lower limit device comprises a microswitch component and a guide rod which is matched with the microswitch component to control the rotation of the motor; the travel limiter comprises a memory cam, an input shaft, a sun wheel, a planet wheel carrier, a planet wheel, a planet wheel shaft, a static internal gear and a dynamic internal gear. By adopting the technical proposal, the single-phase electric hoist with the lower limit travel limiter has the advantages of simple structure, safe use, and adjustable lower limit travel.
Description
technical field [0001] The invention relates to a single-phase electric hoist in lifting equipment, in particular to a single-phase electric hoist with a lower limit stroke limiter. Background technique [0002] Single-phase electric hoist is a kind of lifting equipment that is widely used. The single-phase electric hoist that appears and reports on the market and data mainly includes a shell, a reel arranged inside the shell, and a wire rope that is wound and matched with the reel. The motor reducer and the upper limit device that drive the reel to rotate, when the equipment lowers the heavy object, after the steel wire rope on the reel is exhausted, because the lower limit travel limiter is not set, if the control parts cannot be controlled in time, the motor will not If the operation is stopped in time, the reel will continue to rotate, and if the steel wire rope is wound on the reel in the opposite direction, the heavy object will rise instead, causing damage to the uppe...
Claims
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IPC IPC(8): B66D1/56B66D1/12B66D1/22
Inventor 黄建民王建科林剑叶海波
Owner BADA MECHANICAL & ELECTRICAL