CN202594685U - Ratchet wheel self-control clutch winch - Google Patents

Abstract

The utility model relates to a ratchet wheel self-control clutch winch which is characterized in that a rack wheel is arranged in one side of a barrel shaft, a clutch brake formed by combining a ratchet wheel mechanism, a belt-shaped friction wheel, a tension spring and a handle is arranged at the outer end of the same side, a pinion is installed on an input wheel of a belt wheel through a key sleeve to be meshed with the rack wheel in sliding mode, a sleeve spring is sleeved on one side of the pinion, a palladium-shaped shifting fork is combined on a wall plate, one end of the palladium-shaped shifting fork butts against the pinion, and the other end of the palladium-shaped shifting fork is outwards and combined with a connection rod. One end of a rocker arm is combined on the wall plate through a pin, and the middle of the rocker arm is combined on the connection rod. When power is off during hoisting, a pawl of the clutch brake is embedded in a ratchet wheel, and self-control inversion-preventing effect is achieved, so that a heavy object falls down, a friction belt loosens and falls down with no load through an operation handle without power driving, the pinion can be separated from the rack wheel by operating the rocker arm through hands or feet, the friction belt can loose by pushing the handle through hands, the friction wheel and a winding drum rotate reversely together, and the aim of throw fishing is achieved. The ratchet wheel self-control clutch winch has the advantages of being convenient to use, energy-saving and efficient.

Description

Ratchet self-controlling on and off formula winch

Technical field

This utility model belongs to a kind of disengaging type winch in the weight-lifting equipment, especially relates to a kind of ratchet self-controlling on and off formula winch.

Background technology

Known, the disengaging type winch that occurs is gone up by current society, be mostly to depend merely on lever operated clutch and brake equipment and realize its function, therefore in use in many places, can not automatic control, operation acts hurriedly in a messy situation, be inconvenient to influence work efficiency, do to invent as follows for this reason.

Summary of the invention

The utility model is to provide a kind of, plays weight in rising, and outage can automatic control, and the whereabouts can not electricity consumption, has controlled the falling speed of weight by lever, and when unloaded, the separation transmission gear can realize losing the ratchet self-controlling on and off formula winch that angles function.

The technical scheme that solves its technical matters is: the clutch brake that is combined into by ratchet device and banded frictional wheel, extension spring, handle is set on drum shaft one end of twin shaft two wall two-stage speed change open type winchs; The arrangement of clutch of being made up of cover spring, shift fork, connecting rod, rocking arm is set on belt pulley input shaft and wallboard again; Be mated operation and realize, specific as follows:

A kind of ratchet self-controlling on and off formula winch comprises: drum shaft, reel, gear, input shaft, belt pulley, wallboard open frame, clutch brake, arrangement of clutch; It is characterized in that: big gear wheel is located at drum shaft one side and is positioned at inside; The clutch brake that is combined into by ratchet device and banded friction wheel, extension spring, handle, be located at homonymy and be positioned on its outer end; Miniature gears is sleeved on the belt pulley input shaft by key and slides meshing with big gear wheel; The cover spring is sleeved on a side of miniature gears, and palladium shape shift fork is combined on the wallboard, one of which end and miniature gears outwards combine with connecting rod by, the other end mutually, and rocking arm is combined in an end by Xiao Zi that middle junction is combined on the connecting rod on the wallboard.When in lifting, cutting off the power supply; The ratchet of clutch brake embeds in the ratchet and can not rotate owing to its friction wheel is fixed on the wallboard by extension spring, has produced the anti-down usefulness that transfers to of automatic control, if weight is fallen; Do not need that electronic operating handle makes that friction band is loosening, friction wheel just can reverse, its speed with its to handle exert oneself relevant; Unloaded when falling, by hand or pin operation rocking arm, make miniature gears separate with big gear wheel, at this moment friction force minimum, make the friction band loosening by the hand push handle again; Friction wheel reverses with reel, can reach to lose the purpose of angling.Stop the effect to handle, friction wheel still is fixed on and plays the anti-down usefulness that transfers on the wallboard.Beneficial effect: easy to use, efficient energy-saving.

Description of drawings

This accompanying drawing is the structural representation of its a kind of pedal clutch formula winch of the utility model.

Among the figure 1, ratchet; 2, friction wheel; 3, ratchet; 4, the friction band; 5, frame; 6, handle; 7, the cover spring; 8, shift fork; 9, connecting rod; 10, rocking arm.

The specific embodiment

Be described further below in conjunction with accompanying drawing:

Ratchet 1 is fixed on the outer end of drum shaft by key; Friction wheel 2 is combined on the drum shaft by bearing and superposes with ratchet; Ratchet 3 is combined on the friction wheel 2 tangent with ratchet by rotating shaft and spring, friction is with 4 one ends to be fixed on that the other end combines with handle 6 on the frame 5, and the lower end of handle 6 is fixed on the frame 5 by extension spring; Miniature gears is enclosed within on the input shaft by key and is slidingly connected with big gear wheel; Cover spring 7 is enclosed within and is positioned at the miniature gears right side on the input shaft, and palladium shape shift fork 8 is combined on the frame 5, an end leans on the miniature gears left side mutually, the other end outwards combines with connecting rod 9 upper ends, and the rocking arm 10 1 end machines of being combined in add on 5, the centre combines with connecting rod 9 lower ends.Obviously: when the electric hoisting thing rose, ratchet 3 separated non-resistance with the ratchet of ratchet 1, during the outage reversing; Play the automatic control effect in the effect embedding ratchet of ratchet by spring; Driving handle 6 friction force reduce, and friction wheel 2 can reversing fall weight automatically, its speed firmly relevant with to handle; With foot-operated rocking arm, shift fork 8 can be stirred the little teeth directional right side with big gear wheel and separate when unloaded, and friction force is kept to minimum, pushes hard handle 4, friction wheel 2 by hand again and reverses fast can realize losing with reel and angle function, thereby reach design goal.

Claims (1)

1. a ratchet self-controlling on and off formula winch comprises: drum shaft, reel, gear, input shaft, belt pulley, wallboard open frame, clutch brake, arrangement of clutch; It is characterized in that: big gear wheel is located at drum shaft one side and is positioned at inside; The clutch brake that is combined into by ratchet device and banded friction wheel, extension spring, handle, be located at homonymy and be positioned on its outer end; Miniature gears is sleeved on the belt pulley input shaft by key and slides meshing with big gear wheel; The cover spring is sleeved on a side of miniature gears, and palladium shape shift fork is combined on the wallboard, one of which end and miniature gears outwards combine with connecting rod by, the other end mutually, and rocking arm is combined in an end by Xiao Zi that middle junction is combined on the connecting rod on the wallboard.

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