CN2920961Y - Light hoisting device - Google Patents

Abstract

The utility model relates to a portability jack which comprises a salver, an upper frame and two hoisting lines. The upper frame is composed of two beams and a girder; both ends of the two beams are separately provided with an idler pulley; one end of the girder is connected with the central section of one beam through a gearbox assembly, and the other end of the girder is connected with the central section of the other beam through a bearing; both ends of the girder are separately fixed with a joint which can rotate with the girder. One end of two hoisting ropes is fixed on the two ends of the salver and the other end bypasses the idler pulley in turn, and twists the girder, then the corresponding joints on the girder bypasses the other idler pulley, finally the end of the hoisting rope is connected with the corresponding end at the other side of the salver. The gearbox assembly comprises a shell body, a worm wheel and a worm which are joggled with each other in the shell body, and a rocker which can drive the worm to turn. The rotation of the rocker can control the turning of the worm that drive the worm wheel and the girder to turn and finally drive the salver to rise, thereby bringing depositing goods from the bottom of small-sized familial building to the upper part into action.

Description

A kind of light Jack

Technical field

The utility model relates to a kind of hoisting device, relates in particular to a kind of small-sized Jack of little pellet type that takes up space.

Background technology

Existing weight-lifting equipment, general all than relatively large, be used to lift by crane large-sized object, the shortcoming of this equipment is that floor area and space are big, is not suitable for small-sizedly as inherent upper strata, market arrangement of goods especially, the little building stored article of perhaps general family is used.

At this situation, it is that the Chinese utility model patent " small-sized hoisting device " of ZL200420038888.X (notification number is CN2687090Y) has disclosed a kind of such structure that one patent No. is arranged, a kind of small-sized hoisting device, be that vertical support is equipped with vertical shaft on the bottom surface of pallet, wheel is fixed on the vertical shaft along the flat wheel of band multiple tracks closed ring groove, flat wheel peripheral uniform at least three derrick lines are installed, one end of derrick line is fixed in the wheel edge behind groove separately respectively, the other end is walked around track adjusting wheel, be fixed on the fixing top, power is through force application mechanism, transmission device is connected with flat wheel.This transmission device is, fixed installation one bevel gear is meshed with cross-tie another bevel gear in framework on the vertical shaft below flat wheel, be connected with force application mechanism by worm and gear self-locking device, a pair of bevel gear again, this force application mechanism is the sprocket wheel that is bearing on the framework, hangs with chain on the sprocket wheel.Can be not cross-laminated between the above-mentioned hoisting device derrick line, making life-span of rope prolong all parts greatly all is installed on the pallet, do not take up an area of face and space separately, be specially adapted to small-sized as sell inherent upper strata, goods yard arrangement of goods, below sell goods, when access goods, pallet is put the space that conveniently picks and places goods to the people, pick and place the work that does not influence the people, the small-sized building bottom that is used in family is to the upper strata accessing article, and the little family of area builds uses such as hanging bed, avoided the people to use ladder inconvenience up and down.

But transmission device in the above-mentioned utility model and force application mechanism are too complicated, this transmission device by a plurality of difform gears, and worm and gear forms, so structure is numerous and diverse, and force application mechanism is to drive with chain and sprocket wheel, then is easier to damage.So above-mentioned small-sized hoisting device also can be further improved.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to operate, light Jack of stable transmission at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of light Jack includes and places pallet, upper frame, two derrick lines that article are used; It is characterized in that: upper frame includes two crossbeams, a girder that is fixed on eminence and is provided with at interval; Two ends at described two crossbeams respectively are fixed with a guide wheel; Described girder one end links to each other by the middle part of transmission assembly with a crossbeam, and the other end links to each other with the middle part of another crossbeam by bearing, respectively is fixed with a joint that can rotate with girder at the two ends of girder; Described two derrick line one ends are separately fixed at the two ends of pallet, the other end is walked around a guide wheel on the respective girders successively, be wrapped on the girder again, then pass from the one side of corresponding joint, pass from the another side of corresponding joint, walk around again with respective girders on another guide wheel after, link to each other respectively at last with the respective end of the opposite side of pallet; Described transmission assembly by housing, be contained in the housing and intermeshing worm gear and worm screw are formed, housing is fixed therein on the crossbeam, one end of girder is located in the worm gear, and can rotate with worm gear, described worm screw one end then passes the housing lower end, and this light Jack comprises that also one can drive the rocking bar that worm screw is rotated.

Above-mentioned worm screw exposes on the part of housing and has a slotted eye, and its head end of described rocking bar has a hook that can be hung in the slotted eye, adopts this mode to drive worm screw and rotates more conveniently, also can adopt existing alternate manner certainly.

Improve further, in order to prevent that worm gear is being placed on the pallet under the effect of goods self gravitation, deflect, and drive worm screw and girder deflection, the danger that causes goods to fall down and pound the people or smash goods with pallet, we drive the hill holder that worm screw is rotated also being provided with on the above-mentioned housing under the state that prevents in worm gear counter-rotating, this hill holder comprises a check plate, have a slotted eye on the check plate, one end of check plate is movably articulated on the housing, the other end of check plate has a self-locking structure that can lock together with housing, side at check plate has a barrier structure that can stop worm screw to be rotated, this check plate can effectively be placed the rotation of worm screw, and then effectively prevents joint to rotate in company with girder and worm gear, pallet is remained be in the position of standing height.

Above-mentioned barrier structure is: the side at check plate has a blocking surface, is locked at the check plate other end under the state of housing, and described blocking surface and worm screw expose housing parts and fit.Above-mentioned barrier structure also can be: the side at check plate has a stop column to outer lug, is locked at the check plate other end under the state of housing, and described stop column is plugged in worm screw and exposes in the slotted eye on the housing parts.

Above-mentioned self-locking structure is: the projection that is fixed with a hollow at the front end face of check plate, be equipped with positioning bead, spring in the projection, afterbody at projection is bolted with a double-screw bolt that the projection afterbody can be closed, described positioning bead partly exposes the front opening of projection, described spring one end is resisted against on the positioning bead, the other end is resisted against the inner end surface of double-screw bolt, this spring applies an elastic force that allows positioning bead have to expose all the time the outer trend of projection to positioning bead, has with positioning bead in the relevant position of housing outer face and blocks the knock hole of joining mutually.This self-locking structure has simply, and the easy advantage that unlocks also can adopt existing other self-locking structure certainly.

Above-mentioned girder is a square tube, has the square hole that matches with square tube on the described joint, also has the square hole that matches with square tube on the described bearing, also has the square hole that matches with square tube on the described worm gear.Adopt square tube and square hole to cooperate bearing and worm gear are rotated with square tube, also can adopt other heterotype tubings such as other triangle certainly, it is exactly easy to connect adopting square tube to also have an advantage.

For convenience of packed and transported, above-mentioned girder is fixed together by at least two square tubes and forms.

The structure that above-mentioned square tube is fixed together is, be welded with the joint pin that a part is exposed the square tube end face in a square tube therein, described joint pin wears in another root square tube, is fixed together by screw bolt and nut between this joint pin and another square tube.Certainly also can adopt other fixed form.

Compared with prior art, advantage of the present utility model is: it rotates by rotating rocker control worm screw, and then drive worm gear and girder rotation, the rotation of girder drives joint again and rotates, make derrick line progressively be wrapped on the girder, so that derrick line shrinks around two guide wheels, finally drive pallet and rise, to play in the effect of the small-sized building bottom of family to upper strata deposit product; In the time will taking off article, then the backward rotation rocking bar is controlled the worm screw backward rotation, and then drive worm gear and girder backward rotation, the rotation of girder drives the joint backward rotation again, derrick line is progressively loosened out from girder,, pallet is descended so that derrick line is transferred around two guide wheels, this moment, just desirable thing or was upwards stacked other article.

Description of drawings

Fig. 1 is the structural representation (main looking under the state) of the utility model embodiment;

Fig. 2 is the connection diagram of the utility model embodiment middle girder;

Fig. 3 is the structural representation (under the side-looking state) of the utility model embodiment;

Fig. 4 is the lateral plan of transmission assembly among the utility model embodiment;

Fig. 5 is the transparent view of transmission assembly among the utility model embodiment;

Fig. 6 is that the A-A of Fig. 5 is to cutaway view;

Fig. 7 is the assembling scheme drawing of the utility model embodiment center tap;

Fig. 8 is that the B of Fig. 7 is to view.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1～8, a kind of light Jack includes the pallet 1 placing article and use, upper frame 2, two derrick lines 3,3 ', pallet 1 shape that is rectangle, and upper frame 2 includes two crossbeams 21,21 ', one girder 22 that is fixed on eminence and is provided with at interval; Respectively be fixed with a guide wheel 23,23 ', 26,26 ' at two crossbeams 21,21 ' two ends, described girder 22 is fixed together by two square tubes and forms, be welded with the joint pin 6 that a part is exposed the square tube end face in a square tube therein, described joint pin 6 wears in another root square tube, be fixed together by bolt 7 and nut 8 between this joint pin 6 and another square tube, as shown in Figure 2;

As Fig. 1, shown in 3, has an outward extending connecting portion 211 at crossbeam 21 middle parts, at the middle part of another crossbeam 21 ' an outward extending connecting portion 211 ' is arranged also, these two connecting portions 211,211 ' is corresponding mutually, upward be fixed with a bearing 24 at connecting portion 211 ' by bearing carrier ring 9, have the square hole that matches with girder 22 on the bearing 24, on another connecting portion 211 ', be fixed with transmission assembly 4, this transmission assembly 4 comprises the housing 41 that is fixed on the connecting portion 211, be equipped with intermeshing worm gear 42 and worm screw 43 in the housing 41, have one and the square hole that matches of girder 22 on the described worm gear 42, one end of girder 22 is located in the square hole of bearing 24, the rotation of worm gear 42 just can drive girder 22 and play rotation with one like this, the other end of girder 22 is located in the square hole of worm gear 42, described worm screw 43 1 ends pass housing 41 lower ends, worm screw 43 exposes on the part of housing 41 and has a slotted eye 421, this light Jack comprises that also one can drive the rocking bar 5 that worm screw 43 is rotated, and described rocking bar 5 its head ends have a hook 51 that can be hung in the slotted eye 431;

As Fig. 7, shown in 8, respectively being fixed with one at the two ends of girder 22 can be with the joint 25 of girder 22 rotations, 25 ', joint 25, have the square hole that matches with square tube on 25 ', joint 25, also have the eyelet hole that is distributed in girder 22 both sides on 25 ', described two derrick lines 3,3 ' one end is separately fixed at the two ends of pallet 1, the other end is walked around respective girders 21 successively, a guide wheel 23 on 21 ', 23 ', be wrapped in again on the girder 22, then from corresponding joint 25, an eyelet hole of 25 ' passes, from this joint 25, another eyelet hole of 25 ' passes, walk around again and respective girders 21, another guide wheel 26 on 21 ', after 26 ', link to each other respectively at last with the respective end of the opposite side of pallet 1;

Shown in Fig. 4～6, prevent under the state of worm gear 42 counter-rotating, to drive the hill holder that worm screw 43 is rotated also being provided with one on the housing 41, this hill holder comprises a check plate 44, have a slotted eye 441 on the check plate 44, one end of check plate 44 is movably articulated on the housing 41, the other end of check plate 44 has a self-locking structure that can lock together with housing 41, has a barrier structure that can stop worm screw 43 to be rotated in a side of check plate 44;

Wherein self-locking structure is: the projection 45 that is fixed with a hollow at the front end face of check plate 44, be equipped with positioning bead 46 in the projection 45, spring 47, in projection 45, be bolted with a double-screw bolt 48 that projection 45 afterbodys can be closed, described positioning bead 46 parts are exposed the front opening of projection 45, described spring 47 1 ends are resisted against on the positioning bead 46, the other end is resisted against the inner end surface of double-screw bolt 48, this spring 47 applies one for positioning bead 46 and allows positioning bead 46 have all the time by exposing the elastic force of projection 45 trend outward, have with positioning bead 46 in the relevant position of housing 41 outer faces and block the knock hole 411 of joining mutually.

Wherein barrier structure is: the side at check plate 44 has a blocking surface 442, also has a stop column 443 to outer lug on this blocking surface 442, be locked under the state of housing 41 at check plate 44 other ends, described blocking surface 442 and worm screw 43 expose housing 41 parts fits, and stop column 443 is plugged in worm screw 43 and exposes in the slotted eye 431 on the housing parts;

Principle of work of the present utility model and process are such:

As shown in Figure 1, during use article are placed on the pallet 1, then the hook on the rocking bar 5 51 being hung on worm screw 43 exposes in the slotted eye 431 of housing 41, rotating rocker 5 again, rocking bar 5 drives worm screw 43 and rotates, worm screw 43 then drive worm gear 42 is rotated, girder 22 and joint 25,25 ' the rotation under the drive of worm gear 42 is rotated with worm gear 42, this moment derrick line 3,3 ' at joint 25, progressively be wrapped on the girder 22 under 25 ' the effect, so that derrick line 3,3 ' around corresponding four guide wheels 23,23 ', 26,26 ' shrinks, the final pallet 1 that drives rises, to play in the effect to upper strata deposit product of the small-sized building bottom of family; For between safe period, allow the hook 51 on the rocking bar 5 be hung on the slotted eye 441 of check plate 44 again, drive check plate 44 upwards to reach, when exposing housing 41 parts, blocking surface 442 and worm screw 43 fit, stop column 443 is plugged in and when exposing in the slotted eye 431 on worm screw 43 parts of housing 41, and the positioning bead 46 on the self-locking structure is fastened under spring 47 effects in the knock hole 411 on the housing 41 and locks simultaneously;

In the time will getting thing or reappose article, then the backward rotation rocking bar 5, and derrick line 3,3 ' is progressively loosened out from girder 22, so that derrick line 3,3 ' is transferred around guide wheel 23,23 ', 26,26 ', pallet 1 descended.

Claims (9)

1, a kind of light Jack includes and places pallet (1), upper frame (2), two derrick lines (3,3 ') that article are used; It is characterized in that: upper frame (2) includes two crossbeams (21,21 '), a girder (22) that is fixed on eminence and is provided with at interval;

Respectively be fixed with a guide wheel (23,23 ', 26,26 ') at the two ends of described two crossbeams (21,21 ');

Described girder (22) one end links to each other by the middle part of a transmission assembly (4) and a crossbeam (21), the other end links to each other with the middle part of another crossbeam (21 ') by bearing (24), and respectively being fixed with one at the two ends of girder (22) can be with the joint (25,25 ') of girder (22) rotation;

Described two derrick lines (3,3 ') one end is separately fixed at the two ends of pallet (1), the other end is walked around the guide wheel (23,23 ') on the respective girders (21,21 ') successively, be wrapped in again on the girder (22), then pass from the one side of corresponding joint (25,25 '), pass from its another side, walk around again with respective girders (21,21 ') on another guide wheel (26,26 ') after, link to each other respectively at last with the respective end of the opposite side of pallet (1);

Described transmission assembly (4) by housing (41), be contained in the housing (41) and intermeshing worm gear (42) and worm screw (43) are formed, housing (41) is fixed therein on the crossbeam (21), one end of girder (22) is located in the worm gear (42), and can rotate with worm gear (42), described worm screw (43) one ends then pass housing (41) lower end;

This light Jack comprises that also one can drive the rocking bar (5) that worm screw (43) is rotated.

2, light Jack according to claim 1 is characterized in that described worm screw (43) exposes on the part of housing (41) to have a slotted eye (431) that its head end of described rocking bar (5) has a hook (51) that can be hung in the slotted eye (431).

3, light Jack according to claim 1 and 2, it is characterized in that also being provided with on the described housing (41) one and prevent under the state of worm gear (42) counter-rotating, to drive the hill holder that worm screw (43) is rotated, this hill holder comprises a check plate (44), have a slotted eye (441) on the check plate (44), one end of check plate (44) is movably articulated on the housing (41), the other end of check plate (44) has a self-locking structure that can lock together with housing (41), has a barrier structure that can stop worm screw (43) to be rotated in a side of check plate (44).

4, light Jack according to claim 3, it is characterized in that described self-locking structure is: the projection (45) that is fixed with a hollow at the front end face of check plate (44), be equipped with positioning bead (46) in the projection (45), spring (47), afterbody at projection (45) is bolted with a double-screw bolt (48) that projection (45) afterbody can be closed, described positioning bead (46) part is exposed the front opening of projection (45), described spring (47) one ends are resisted against on the positioning bead (46), the other end is resisted against the inner end surface of double-screw bolt (48), this spring (47) applies one for positioning bead (46) and allows positioning bead (46) have the elastic force that partly exposes the outer trend of projection (45) all the time, have with positioning bead (46) in the relevant position of housing (41) outer face and block the knock hole (411) of joining mutually.

5, light Jack according to claim 3, it is characterized in that described barrier structure is: the side at check plate (44) has a blocking surface (442), be locked under the state of housing (41) at check plate (44) other end, described blocking surface (442) and worm screw (43) expose housing (41) part and fit.

6, light Jack according to claim 3, it is characterized in that described barrier structure is: the side at check plate (44) has a stop column to outer lug (443), be locked under the state of housing (41) at check plate (44) other end, described stop column (443) is plugged in and worm screw (43) exposes in the slotted eye (431) on the housing parts.

7, light Jack according to claim 1, it is characterized in that described girder (22) is a square tube, described joint has the square hole that matches with square tube on (25,25 '), described bearing also has the square hole that matches with square tube on (24), and described worm gear also has the square hole that matches with square tube on (42).

8, light Jack according to claim 7 is characterized in that described girder (22) is fixed together by at least two square tubes and forms.

9, light Jack according to claim 8, it is characterized in that the structure that described square tube is fixed together is, be welded with a part in square tube therein and expose the joint pin of square tube end face (6), described joint pin (6) wears in another root square tube, is fixed together by bolt (7) and nut (8) between this joint pin (6) and another square tube.

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