CN2559629Y - Automatic lifting light crane - Google Patents

Abstract

The utility model provides a self-lifting portable crane, comprising a lifting unit, a horizontal rotator, an arm seat, a lifting arm, a sliding telescopic rod, and an article hanging sliding block; the lifting unit is separately arranged; the lifting arm or an auxiliary bracket is arranged on the building matched with the lifting unit or calabash to hoist all parts for disassembly and assembly; a frame is fixed on the building by a supporting type; all other parts are sequentially arranged on the frame from bottom to top. A lifting steel wire is led out of a wound roll through a ground guide wheel from bottom to top and passes through a hollow shaft, and is come-and-go enwound with a pulley block unit and the article hanging sliding block by a head sheave; after that, a free end of the lifting steel wire is fixed on the arm seat or the lifting arm to form a lifting system. Owning to simple structure and assembly-typed and remote control operation with supported on the building by self-lifting disassembly and assembly, the utility model has the advantages of light whole machine, easy disassembly and assembly, full functions, convenient operation, saving material, saving energy, increasing the effect, safety, and strong adaptability.

Description

The jack up portable crane

Affiliated technical field

The utility model relates to a kind of weight-lifting equipment, especially supported type for building and is fixed on the building body, can change the crane arm elevation angle automatically and jack up is installed, the jack up portable crane.

Background technology

The portable crane of finding the patent No. 97209239.0 exists because the arm seat is contained in the below of suspension rod, hindered by the directed attaching parts of lower rotary table, level angle is little, and the change flexible and elevation angle of arm is not automatic, elevator group is to be contained on the suspension rod, body is heavy, depends merely on cucurbit and manpower during dismounting and carries out inconvenience, the shortcoming of influential work efficiency.For overcoming its shortcoming, the spy does following improvement.

Summary of the invention

The utility model purpose provides a kind of modular construction, supported type is fixed on the building body, crane arm can change its elevation angle automatically, can expand construction space, easy to assemble, just operation, construction cost and cost is low, function is complete, safe and convenient to use, efficient is high, the portable crane of adaptable, dismounting jack up.

The technical scheme in the invention for solving the technical problem is: use suit to connect the fixing modular structure of Xiao Zi, load onto the remote control corollary apparatus, elevator group is arranged separately on ground or building body (the be installed in arm seat that tonnage is less), and (or use cucurbit) cooperates the crane arm that stands on the building body or auxiliary stand each parts of slinging to carry out oneself and rise dismounting.Horizontal spider support is that supported type is fixed on the building body, and front end is being supported by the push rod of fix tightly.Body comprises: frame, horizontally rotating device, arm seat crane arm and sliding extension bar, is to be assembled in from down to up in turn on the support, becomes the triangular taper stable by two digonal links, and the two ends of sliding extension bar are connected between arm seat and the crane arm with rotating shaft.The lifting steel wire be by reel draw by land wheel and track adjusting wheel from vertical hollow frame from bottom to top pass hollow shaft through head sheave be contained in the assembly pulley on crane arm gooseneck boom and the arm seat and hang the thing pulley twine back and forth in sequence after, free end is fixed on forms tackling system on arm seat or the crane arm.Bump pendulum because of being equipped with on the arm gooseneck boom; on the extension thing pulley spring being housed bumps; and the lifting steel wire the assembly pulley on arm seat and the crane arm have twine and with hang the thing pulley on a rope; the lifting thing is in uphill process; spring on hanging the thing pulley bump with the arm gooseneck boom on bump pendulum and collide the time (under non-stop-machine situation) by the effect of assembly pulley; the lifting thing reduces speed now and continues to rise; thereby reach in lifting process; crane arm changes the purpose at its elevation angle automatically; lifting thing safety and precise arrives required extreme higher position under the effect of limit switch; yet when descending in contrast crane arm under gravity and the effect of sliding extension bar; drop to end position; this moment, the swinging radius maximum was convenient to construction.

Remove the part assembly pulley on frame and the crane arm and bump pendulum, remaining part is directly installed on the support respectively in order also can implements.Reach crane arm changes its elevation angle automatically when rotating scheme, be in addition to be fixed on the gooseneck boom of arm seat or crane arm and to be wrapped in back and forth between two assembly pulleys on arm seat and the arm gooseneck boom with an end of an arm wire drawing, its other end by be contained in behind the arm seat in the bottom side by side between two track adjusting wheels, be fixed on downwards and horizontally rotate on the device, realize that by rotating crane arm changes its elevation angle automatically.As can be known in horizontally rotating the arm wire drawing under the effect of track adjusting wheel, be wrapped on the circumference that horizontally rotates the device shell, distance between two assembly pulleys is shortened, the elevation angle of crane arm increases gradually, stop at predetermined height and position under the effect of limit switch, swinging radius maximum when crane arm drops to end position during backward rotation is when orientation comes and goes rotation, flexible and convenient operation helps construction.

When the rotation of using hydraulic machinery to replace to horizontally rotate device and crane arm and sliding extension bar flexible, be the crane arm tail end to be equipped with head sheave and with the top bonded assembly of rotating shaft and arm seat.The two ends of sliding extension bar are connected between crane arm bottom middle part and the arm seat lower front end with rotating shaft, implement more superior.Because complete machine rides on the building body, and arm seat is the top that is contained in body, therefore, has expanded construction space, thereby reaches design goal.

The beneficial effects of the utility model are: simple in structure, easy to assemble, just operation, construction cost and self cost are low, have expanded construction space, and function is complete, economize material, energy-conservation, synergy, safety, comformability are strong.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is crane arm of the present utility model changes its elevation angle automatically in lifting process a constructional drawing.

Fig. 2 is that the utility model removes behind the frame and crane arm automatic constructional drawing that changes the elevation angle in rotation.

Fig. 3 is that the utility model uses hydraulic machinery to form the assembly drowing of tackling system.

Among the figure 1, the building body, 2, support, 3, frame, 4, horizontally rotate device, 5, arm seat, 6, head sheave, 7, crane arm, 8, the sliding extension bar, 9, the lifting steel wire, 10, hang the thing pulley, 11, assembly pulley, 12, bump pendulum, 13, assembly pulley, 14, assembly pulley, 15, limit switch, 16, track adjusting wheel, 17, the arm wire drawing.

The specific embodiment

In Fig. 1, support (2) is the horizontal spider that is assembled into by two mutually perpendicular horizontal beams and cross-arm, and push rod and track adjusting wheel (16) are equipped with in its top, is that supported type is fixed on the building body, its push rod lower end is to be fixed on the building body, and track adjusting wheel is poor corresponding with the axle center can universal rotation.Frame (3) is that a vertical hollow tubular or framework are sleeved on the top, angle of support (2), its upper end with horizontally rotate device (4) suit after, make its two ends be fixed on the rear end of two horizontal beams with Xiao Zi respectively and to horizontally rotate device both sides and support composition triangular bevelled with two digonal links.Horizontally rotate on the device (4) the remote control corollary apparatus is housed, its vertical axes is hollow.Arm seat (5) cause chair shape its bottom be fixed on the follower that horizontally rotates device by screw, the middle part be equipped with limit switch (15) and with the cooresponding head sheave in hollow axle center (6).Crane arm (7) is that the spider that is made of two poles and cross-arm (or replace with a sleeve pipe) assembles with the arm gooseneck boom, and its lower end is with rotating shaft and arm seat bottom front end bonded assembly.Sliding extension bar (8) is made up of sleeve pipe and slide bar, on the slide bar in cover damping spring is housed, and is used for limiting crane arm and rises and fall end position, and its two ends are connected between the top with rotating shaft and arm seat and crane arm.Hang thing pulley (10) and bump by hanging hook and assembly pulley or pulley and spring and form, and the three can be in relative rotation.Before and after the upper and lower sides on the arm gooseneck boom assembly pulley (13) (14) and (11) are housed respectively, bump pendulum (12) and be equipped with before the assembly pulley between (11) and (13).The lifting steel wire is to be drawn by reel, through land wheel and track adjusting wheel (16), from top to bottom by frame pass hollow shaft along head sheave (6) upwards on the arm gooseneck boom according to the assembly pulley sequence number: the order of (11)-preceding (11)-(10)-(13), back-preceding (11)-(10)-(13)-back (11) is being twined, and after twining with assembly pulley (14) free end is fixed on again and brings in the composition tackling system on the arm seat.Obviously; arm seat upper end and arm gooseneck boom and the assembly pulley of hanging on the thing pulley are that a rope is intertwined; when rising, hang spring on the thing wheel (10) and bump and bump pendulum (12) its pulley and arm gooseneck boom automatically regulating (under non-stop-machine situation) in same plane when colliding; because assembly pulley (14) two ends are apart from the reason that the shortens rising that reduces speed now; meanwhile; the elevation angle of crane arm increases gradually and the arm of force dwindles highly reach maxim under the effect of limit switch; otherwise; under the effect of gravity; crane arm is static when dropping to end position arm of force maximum automatically to get off; can continue to fall and hang the thing pulley, and arm seat is mounted in the body top, is not obstructed when therefore horizontally rotating; its corner is greater than 360 °; expanded construction space,, and the new building body has been free from side effects because stress point is on the floor of structural integrity.

In Fig. 2; horizontally rotating device (4) directly is sleeved on the support; the back bottom of arm seat (5) is installed with two fixing leading sheaves (16) side by side; remove assembly pulley (13) on the arm gooseneck boom and bumped pendulum (12); increased a limit switch (15), two spacing opening (15) are to control elevator group respectively and horizontally rotate device to shut down at end position.Arm wire drawing (17) is to use separately, the one end is fixed on arm gooseneck boom or the arm seat top, be fixed on after the other end winds and passes between the track adjusting wheel (16) behind the assembly pulley (14) and horizontally rotate on the device, and lifting steel wire (9) just is wrapped between assembly pulley (11) and the extension thing pulley, therefore when rising to the qualification position, when beginning to horizontally rotate, because arm wire drawing tail end is fixed on the shell that horizontally rotates device.The intermediate portion is wrapped on the circumferential edge that horizontally rotates the device shell, and under the effect of assembly pulley (14), the crane arm elevation angle constantly increases through end position, swinging radius maximum when crane arm drops to end position during counter motion.

In Fig. 3, horizontally rotating device (4) is replaced by hydraulic machinery, lifting (7) is the hydraulic actuating cylinder flexible that an internal and external casing is made, it is top bonded assembly with rotating shaft and arm seat (5) that its tail end is equipped with track adjusting wheel (16), and the sliding extension bar is that hydraulic actuating cylinder replaces and with rotating shaft two ends is connected crane arm bottom middle part and arm seat bottom front end.To horizontally rotate directly that device is contained in also be enforceable on the support to this machine if remove frame, and in use arm seat can be used as frame department chamber.

Claims (3)

1, a kind of jack up portable crane comprises: elevator group, support, frame, horizontally rotate device, crane arm, sliding extension bar and extension thing pulley, it is characterized in that: take suit to connect fixedly modular construction of Xiao Zi, elevator group is to install separately, in addition crane arm or auxiliary stand being erected with elevator group or cucurbit cooperates each parts of slinging to carry out dismounting, horizontal spider support front end is equipped with push rod, be that supported type is fixed on the building body, frame, horizontally rotate device, arm seat, crane arm is assembled on the support in turn from top to bottom, two digonal link two ends of frame are to be connected to support two horizontal beam rear ends and to horizontally rotate between the device both sides bevelled with hollow vertical axes composition triangular, the center shaft that horizontally rotates device is hollow, head sheave and assembly pulley (14) and limit switch (15) are housed on the arm seat, assembly pulley (11) is housed on the crane arm gooseneck boom, (13), (14), bump pendulum (12), its lower end is connected with arm seat with rotating shaft, the sliding extension bar is attached between arm seat and the crane arm with rotating shaft, hang be equipped with on the thing pulley with pulley in relative rotation spring bump, the lifting steel wire by reel draw through land wheel and track adjusting wheel to down and on pass hollow shaft through head sheave and assembly pulley (11), hang thing pulley (10), assembly pulley (13), (14) twine back and forth in sequence after, free end is fixed on arm seat or the arm gooseneck boom forms tackling system.

2, according to the described jack up portable crane of claim I, when assembly pulley (13) with bump pendulum (12), remove simultaneously and the lifting steel wire only is wrapped in assembly pulley (11) and hang between the thing pulley, when the elevation angle that makes crane arm changes in rotation automatically, it is characterized in that: the back bottom of arm seat is adorning two track adjusting wheels (16) side by side, and an end of arm wire drawing (17) is fixed on arm gooseneck boom or the arm seat, the other end horizontally rotates on the device by passing between the track adjusting wheel (16), being fixed on after walking around assembly pulley again.

3, according to the described jack up portable crane of claim I, horizontally rotate when making that device rotates with hydraulic machinery, when sliding extension bar and crane arm stretch, it is characterized in that: the tail end of crane arm is equipped with head sheave (6) and is connected the upper end with arm seat with rotating shaft, and the two ends of sliding extension bar also are connected between crane arm bottom middle part and the following front end of arm seat by rotating shaft.

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