CN2732709Y - Hand-held portable crane - Google Patents

Abstract

The utility model relates to a hoisting apparatus with a clutch type brake on a driving shaft, which is suitable for families and construction. In the process of lifting heavy objects, the utility model can 'self-lock' in time and stop moving when the power is cut. When the heavy objects fall down, the power can not be started, and the immediate speed can be controlled safely only by controlling a handle. Particularly, the utility model provides a hand-held portable crane which can throw a hook with empty load and can fall down with high speed with small load. The utility model is composed of a machine body which is composed of an elevator boom (1), an arm drawbench (2) and a windlass (3) which are assembled on a machine frame (4) and a machine base (5), a bottom seat of which is provided with a horizontal connector. The machine body and the machine base are combined with spindle sleeves or bearings. The utility model can rotate horizontally, and the elevation and the working radius of the elevator boom can be changed by regulating the length of the arm drawbench. When the utility model is in use, different methods of pressing, bundling, tying, reinforcing with bolts, etc. can be adopted according to different places and scopes, and the construction can be proceeded by no changing or lengthening and fixing the bottom seat thereof. The utility model has the advantages of simple structure, full functions, simple operation, convenient use, energy saving, effect increase and strong suitability.

Description

The hand held portable crane

Affiliated technical field

The utility model relates to a kind of family expenses and weight-lifting equipment for building, its body can horizontally rotate, especially in the lifting process, when stopping, power has " self-locking " ability, can not reinstate power when weight falls, use the hand held portable crane of gravity control whereabouts instantaneous velocity by hand support handle.

Background technology

Known by reel rotate hoisting heavy hoisting crane (with worm and wormwheel do the drive drum acting except) in the weight uphill process, do not have " self-locking " ability, control stopping that rising puts in place by drg entirely, as " automatically controlled " its complex structure cost height.When manual, labour intensity is big and dangerous, and in falling process of heavy, need reinstate power as with Worm and Worm Gear Driving the time to realize.Current hoisting crane by the reel lifting exists body weight, complex structure cost height mostly, lifting big, that be unfavorable for family expenses and indoor and outdoor decoration takes up room, and manipulate scarce limits such as inconvenient and dangerous, that efficient is low, therefore, for overcoming its shortcoming, the spy has carried out following invention:

Summary of the invention

The utility model will provide a kind of its base is fixed on ground, roof, balcony, windowsill, cornices and the first-class different places of scaffold is constructed, body can horizontally rotate, play weight in uphill process, energy " self-locking " when power stops, do not reinstate power during the whereabouts, by hand behaviour handle control instantaneous velocity, zero load can be lost the hand held portable crane of hook, underloading energy high-speed cruising.

The technical scheme that its technical matters that solves the utility model adopts is: with crane arm, the arm wire drawing with by power, driving device, the winch that clutch brake and reel are formed, be assembled in the lump and be combined into removable body on the frame, combine with bearing or axle sleeve with support, its support bottom is kept can be for the horizontal joint of lengthening, make crane arm change its elevation angle and swinging radius by the length of regulating arm wire drawing, and its driving device is to use on the transmission shaft of worm and wormwheel and band or chain and two kinds of the gear combination different drive methods, two kinds of different clutch brakes are being set respectively realize.

In fact the secondary part of friction clutch is fixed up and just becomes a drg, therefore, when adopting worm and wormwheel,, make on the disk of fixing reel one end of the secondary part of friction clutch if reel is combined on the worm gear extension shaft by bearing or axle sleeve as driving device, A end is by dive key or spline, mix thrust baring and connect, on the position that stops, by the effect clutch engagement of spring with the output shaft suit, when power starts, reel and transmission shaft run-in synchronism.Because " self-locking " of worm and wormwheel effect can stop promptly to stop in the weight uphill process with power, can not reverse; Can break away from power during the whereabouts, make power-transfer clutch be in released state by hand behaviour handle compression spring, underloading can fall at a high speed, zero load can be lost hook.

Is to be provided with the ratchet clutch brake on its transmission shaft with band or chain and gear as the winch of driving device, both the friction wheel of ratchet and banded friction brake was combined on the transmission shaft by key (or sealing wire) and bearing stack respectively, and ratchet is fixed on the friction wheel and obtained.Its ratchet is an A end in the ratchet clutch brake, and ratchet and friction wheel are secondary part, obviously, with friction wheel by the friction band fixing after, can only oppositely both can " self-locking " to a direction running, produced effect same with Worm and Worm Gear Driving.Intermittence, drg was used together on the transmission shaft as if friction wheel and " flywheel " are contained in side by side, and make brake scotch that engages with friction wheel and the disengaging pawl that engages with " flywheel ", when being separately fixed at the rocking bar both sides, when rocking bar can make disengaging pawl and gear engagement to a direction motion, both can only be to a direction running, oppositely both can " self-locking ", when rocking bar is moved in the opposite direction, disengaging pawl separates with " flywheel ", and brake scotch can engage with friction wheel, and only the size of the friction moment that is produced by rocking bar is controlled the weight falling speed.And when reel combined with bearing or axle sleeve with drum shaft, if can make the A end of ratchet clutch brake and the secondary part of friction clutch, be separately fixed on the reel two ends, and both brake-applying handle is being connected with frame by rotating shaft, all can reach the purpose of design.

The beneficial effects of the utility model are: simple in structure, easy and simple to handle, easy to use, energy-conservation, synergy, comformability are strong.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the utility model integral structure scheme drawing.

Fig. 2 is a ratchet device and the structural representation of clutch brake after banded friction brake combines.

Fig. 3 is contained in the structural representation that drg is used with intermittence on the transmission shaft side by side with friction wheel and " flywheel ".

The specific embodiment

Among Fig. 11, crane arm, 2, the arm wire drawing, 3, winch, 4, frame, 5, support.

Crane arm 1. lower end connects with rotating shaft with frame lower end 4., arm wire drawing length 2. can be regulated, 1. it connect with frame upper end 4. with crane arm with rotating shaft respectively at two ends up and down, 3. winch is made up of power, driving device, clutch brake and reel, is 4. gone up in frame by Xiao Zi or screw retention.Support 5. by spider or vertically solely bar stand on the base and form, its base can be made into shapes such as triangle, T-shaped, four limits, disk, and leaves the horizontal joint for the long usefulness of frame, 4. its upper end is to be connected into relatively turnable with bearing or cover with frame.

Among Fig. 21, ratchet, 2, friction wheel, 3, ratchet, 4, the friction band, 5, handle.

1. ratchet is fixed on the transmission shaft by key or sealing wire, friction wheel 2. be superimposed upon ratchet 1. before or after, combine with transmission shaft by bearing, can 1. relatively rotate with ratchet, 3. ratchet is fixed on friction wheel by rotating shaft and 2. goes up, and is embedded in the ratchet under the effect of spring.2. 4. friction band smoothly combine with friction wheel, and 5. handle is fixed on the frame by rotating shaft, is fixed up friction wheel is 2. as the same under the spring tension effect.Yet, when transmission shaft rotates counterclockwise ratchet and 1. 3. separates with ratchet, be the weight ascent direction, when rotating on the contrary, the two joint, both by " self-locking ", reel can not reverse, if 5. handle is moved to the right, friction wheel 2. and the friction force of friction band between 4. reduce gradually, weight can quicken, and 5. its speed controlled by handle.

1 friction wheel among Fig. 3,2, brake scotch, 3, flywheel, 4, disengaging pawl, 5, drg intermittently.

Friction wheel 1. with flywheel 3. (being overriding clutch) be fixed on the transmission shaft by key and sealing wire in the lump, brake scotch studs with friction shoe in 2. and is fixed on intermittently drg and 5. goes up, disengaging pawl two ends up and down 4. by connecting rod and crank respectively with intermittence drg 5. reach frame and combine.Intermittently drg ratchet base 5. is fixed on the frame, when rocking bar intermittently at midway location, 1. 2. brake scotch reach disengaging pawl with friction wheel and 4. 3. be in released state simultaneously with flywheel, then transmission shaft is free to rotate on both forward and reverse directions; When rocking bar stops at limit left, 1. 2. brake scotch still separate with friction wheel, and disengaging pawl is 4. 3. meshing with flywheel, plays unidirectional " self-locking action; When rocking bar moved to the right always, 3. 4. disengaging pawl separated with flywheel, and 1. 2. brake scotch engage with friction wheel, and friction force increases gradually, otherwise dwindle gradually.If rocking bar is stopped left to limit, when flywheel casing is locked, as the weight ascent direction, can produce the identical effect of above clutch brake, different is, when rocking bar is parked in the Neutral Position that shows among Fig. 4, transmission shaft can freely turn round two-way, and is more apparent superior.

Claims (7)

1, a kind of hand held portable crane, body are to be assembled by crane arm, arm wire drawing, winch and frame, combine with bearing or axle sleeve with support, it is characterized in that: be provided with clutch brake on the transmission shaft of winch.

2, hand held portable crane according to claim 1 is characterized in that: leaving on the base of support can be for the long horizontal joint of frame.

3, hand held portable crane according to claim 1 is characterized in that: the upper end of crane arm and arm wire drawing and both lower ends and frame rear and front end what connect usefulness is rotating shaft, and the arm wire drawing is adjustable length.

4, hand held portable crane according to claim 1, it is characterized in that: with worm and wormwheel is that its reel of winch of driving device combines with bearing or axle sleeve with output shaft, and the friction clutch secondary part is to be fixed on the reel, and A end and output shaft suit.

5, hand held portable crane according to claim 1, it is characterized in that: the clutch brake that combines with ribbon brake by ratchet device be with ratchet and friction wheel stack in the lump respectively by key (or sealing wire) and bearing fixing and be connected on the transmission shaft, and its ratchet is fixed on the friction wheel.

6, hand held portable crane according to claim 1, it is characterized in that:, be respectively that brake scotch and disengaging pawl (by crank and connecting rod) is fixing and be connected on the rocking bar of drg intermittently if allow friction wheel and " flywheel " be fixed in the lump on the transmission shaft of gear when intermittence, drg was used.

7, hand held portable crane according to claim 1, its feature also is: being used ratchet clutch brake and friction clutch at band, chain and gear is in the winch of driving device the time, its reel is to be combined with its transmission shaft by bearing or axle sleeve, and to make the A end of ratchet clutch brake and the secondary part of friction clutch be to be separately fixed on the reel two ends, and its brake-applying handle is all combined with frame by rotating shaft.

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