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Winch of depth-indicating safety alarm system

A technology of safety alarm and depth indication, applied in the direction of the hoisting device, the spring mechanism, etc., can solve the problems of high speed of the reel, hidden dangers, power failure protection, etc., and achieve the effect of preventing the nut from forcibly moving

Active Publication Date: 2014-03-26
NANTONG LIWEI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is: due to the fast speed of the reel, it will continue to rotate for a certain number of turns due to inertia after power failure, making the nut continue to move forcibly and damage the equipment
[0004] In addition, because the gear box of the depth indicator is driven by the reel shaft through the chain, when the normal transmission chain is disconnected and fails, the device cannot perform indication and power-off protection, so there are still certain potential safety hazards

Method used

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  • Winch of depth-indicating safety alarm system
  • Winch of depth-indicating safety alarm system
  • Winch of depth-indicating safety alarm system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] see figure 1 , the invention discloses a control system comprising a frame, a reel, a driving device, a depth indicator, a transmission monitoring device and a winch;

[0021] The frame includes a base 1 and a bracket 2 installed on the base 1, a reel shaft 3 is horizontally arranged on the base 1, and a reel 4 is installed on the reel shaft 3; brake stops are provided at both ends of the reel 4 Ring 5, brake band assembly 6 is installed outside the two brake retaining rings 5.

[0022] The driving device comprises a driving motor 7 and a reduction box 8. The driving motor 7 is arranged on the base 1 on one side of the reel 4 and is parallel to the reel 4. A brake device 9 is arranged on the output shaft of the driving motor, and the reduction box 8 is installed on the On the base 1 at one end of the reel 4, and set opposite to the support 2.

[0023] The input shaft of the reduction box 8 is connected with the output shaft of the drive motor 7 through a coupling, and...

Embodiment approach

[0031] As a more specific embodiment of the present invention: the limit device includes a limit nut 225, a limit screw 226 and a locking nut 227, the limit nut 225 is welded on the cantilever bracket 221, and the screw connection on the limit nut 2265 is located below the cantilever 222 The limit screw 226 is locked on the limit nut 225 through the lock nut 227 .

[0032] working principle:

[0033] When the winch works normally, the reel shaft 3 drives the bevel gear in the gearbox 9 to rotate through the chain transmission, so that the screw mandrel 14 rotates; It moves in the vertical direction under the cooperation guide of the indicating groove 12 and the triggering groove.

[0034] When the nut 15 moves upwards or downwards, the position of the suspension point is displayed by the indicator needle 18. Before the upper and lower limit positions are approached, the trigger lever will first push the upper deceleration switch 19b or the lower deceleration switch 19c in the...

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PUM

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Abstract

The invention relates to a winch of a depth-indicating safety alarm system. The winch of the depth-indicating safety alarm system is characterized in that the winch comprises a machine frame, a coiling block, a driving device, a depth indicator and a winch control system, an indication box is installed on a gearbox of the depth indicator, a screw rod nut pair is arranged in the indication box, and the two ends of a screw rod are respectively provided with a non-thread neutral-gear zone; a travel protection switch and a speed reduction switch which are connected to the winch control system are arranged on the surface of the indication box; the winch further comprises a transmission monitoring device monitoring whether a chain losses efficacy or not. When a nut of the depth indicator is moved, the position of a hanging point is displayed by a pointer, before the pointer approaches the upper limiting position and the lower limiting position, the speed reduction switch in trigger switches is firstly pushed by a trigger rod, the speed of the coiling block is reduced in advance, the travel protection switch is then triggered, a driving motor is stopped, and therefore damage, caused by inertia, of the depth indicator is avoided. When the chain in normal transmission is broken and losses efficacy, an idler wheel and a cantilever which are placed on the chain fall down due to dead weight and hit a travel switch of the cantilever, and therefore power is off and the winch is stopped under the control of the winch control system.

Description

technical field [0001] The invention relates to a winch, in particular to a winch for a depth indicating safety alarm system. Background technique [0002] A winch is a machine with one or several horizontally installed reels or cable drums that can be wound up with ropes. It has high versatility, compact structure, small size, light weight, heavy lifting, and convenient use and transfer. It is widely used in construction, It can also be used as supporting equipment for modern electronically controlled automatic operation lines for lifting or flat dragging of materials in water conservancy projects, forestry, mines, docks, etc. [0003] The winch is generally based on an electric hoist, which is mainly composed of a motor, a coupling, a brake, a gearbox and a reel, and is installed on the frame together. When lifting materials such as coal mines, it is troublesome to use because it is impossible to observe the lifting height with the naked eye. And if it is not found in ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/56B66D1/12
Inventor 姜国华冒志勇鲍静静孟冉冉
Owner NANTONG LIWEI MACHINERY
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