CN201296615Y

CN201296615Y - Hand pulling block

Info

Publication number: CN201296615Y
Application number: CNU2008201224974U
Authority: CN
Inventors: 仇德发
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-21
Filing date: 2008-10-21
Publication date: 2009-08-26
Anticipated expiration: 2018-10-21

Abstract

The utility model discloses a hand pulling block. Steel sleeves movably arranged on an external wall panel is provided with a transverse cut respectively, and a movable part is movably arranged on one surface of the external wall panel deviating from one surface on which a four-teeth short shaft is arranged, wherein the movable part is positioned between two steel sleeves of the external wall panel and comprises lock plates of the steel sleeves correspondingly arranged in steel sleeve holes and a spring for connecting the lock plates; the lock plates towards the direction of the steel sleeve holes is provided with an inclined surface; and the inclined surface is matched with the transverse cuts on the steel sleeves. In addition, a rotating button is arranged on the spring between the lock plates; the rotating button is rotated to cause the spring between the lock plates to retract, further cause the inclined surface to extend into or withdraw from the transverse cuts on the steel sleeves, thereby realizing the occlusion or the separation of piece gears and five-teeth constant shaft. The utility model has the advantages that a chain wheel is not needed to be rotated when no heavy object is hoisted or a chain is returned; the chain wheel is rotated only when the heavy object is hoisted or descended downwards; and the operation efficiency is high and the time and the labor force are saved.

Description

Chain block

Technical field

The utility model relates to a kind of elevator machinery, particularly relates to a kind of cucurbit of hand pulling type.

Background technology

At present, Chang Yong chain block generally includes 5 teeth normal axle, sprocket wheel, ratchet, friction lining, drg seat, opens heavy chain wheel, outside race, splined hole gear, 4 tooth minor axises, two plate gears and Side fascia etc.; Wherein, the normal axle of 5 teeth is for sprocket wheel, ratchet, friction lining, drg seat with open the heavy chain wheel and be applied in together; The gear that opens heavy chain wheel is for passing outside race and piercing into the splined hole gear and be linked in it together; The hole slot of the endoporus of splined hole gear and the direct geared interlock transmission of opening the heavy chain wheel.

Rotate when sprocket rotation will drive normal of 5 teeth, owing to the gear and two plate gear interlocks mutually of 5 teeth, then two plate gears of 5 teeth axle drive often rotate, and then two plate gears rotation drive 4 tooth minor axises rotate.In addition, since two 4 tooth minor axises in the both sides of splined hole gear and and the splined hole gear be interlocked, then two 4 tooth minor axises rotate and drive the rotation of splined hole gear, and then owing to open the gear of heavy chain wheel and pass outside race and pierce into the splined hole geared sleeve and lump together, the hole slot of the endoporus of splined hole gear and the direct geared interlock transmission of opening the heavy chain wheel, rotate so open the heavy chain wheel, thereby the weight on the realization suspension hook is sling.

For the chain block under this existing structure, as: if there is 100 1 ton of needs, 1 meter the weight of slinging on ground, the transmitting ratio of sprocket wheel is 1:20, then lifting chain raise 1 meter so bangle need 20 meters, we weight raise also need after one meter with suspension hook put down one meter hang second weight so we whenever to hang a used bangle distance of weight be 40 meters, 100 1 ton of needs are sling, and to need the bangle distance be 40 * 100=4000 rice for 1 meter weight, and wherein 2000 meters is the fruitless labours of putting suspension hook.

Therefore, under the use of the chain block under said structure, no matter be to promote or put weight, when still not lifting weight returns chain, all must rotating sprocket, both time-consuming also waste of manpower largely, and running efficiency is low.

The utility model content

In view of the above problems, main purpose of the present utility model be to provide a kind of when not lifting lifting chain realize free lifting, needn't rotating sprocket, and the running efficiency height, save time and the labour-saving chain block.

In order to achieve the above object, the utility model has adopted following technical proposals:

Be on the steel bushing that is installed on the Side fascia, to offer a cross sections in the chain block described in the utility model, and on the described Side fascia and deviate from that activity is provided with a movable part on the one side of installing 4 tooth minor axises, wherein, described movable part is to be between the two steel bushing holes of Side fascia, and this described movable part is to comprise respectively the locking plate of the corresponding steel bushing that is installed in described steel bushing hole and connect spring between this described locking plate, and all have an inclined-plane on described locking plate and towards steel bushing hole direction one end, this inclined-plane matches with cross sections on the steel bushing.

In addition, being equiped with a rotation on the spring between the described locking plate turns round, rotate this rotation and turn round the telescopic spring that can make between this locking plate, and then make described inclined-plane stretch into or withdraw from the cross sections on the described steel bushing, and then realize that 4 tooth minor axises drive plate gear and move.

In addition, on this steel bushing, also be arranged with spring, and this steel bushing and an end be that the described 4 tooth minor axises that are arranged in this steel bushing are combined into a serial verb construction, thereby also can drive 4 tooth minor axises and plate gear motion when realizing this steel bushing motion.

With respect to prior art, the advantage of chain block described in the utility model do not need when not lifting weight returns chain to be rotating sprocket, rotating sprocket just when promoting or transferring weight only, running efficiency height, save time and manpower, in practice, have practical value.

Description of drawings

Fig. 1 is a chain block part-structure scheme drawing described in the utility model;

Fig. 2 A is the schematic perspective view of steel bushing described in the utility model;

Fig. 2 B is the lateral plan of steel bushing described in the utility model;

Fig. 3 is the structural representation of Side fascia described in the utility model.

The specific embodiment

Below in conjunction with accompanying drawing and concrete enforcement chain block structure described in the utility model is described in further detail.

Described chain block is a kind of elevator machinery, it is to realize the slinging or putting down of weight by manually removing to spur bangle, and comprises 5 teeth normal axle, sprocket wheel, bangle, ratchet, friction lining, drg seat, opens structures such as heavy chain wheel, lifting chain, suspension hook, outside race, splined hole gear, 4 tooth minor axises, two plate gears and Side fascia.

Wherein, the normal axle of described 5 teeth is with sprocket wheel, ratchet, friction lining, drg seat and opens the heavy chain wheel and be applied in together, the described heavy chain wheel that opens then is to pass outside race and lump together the hole slot of the endoporus of described splined hole gear and the gear interlock of opening the heavy chain wheel with the splined hole geared sleeve; And on described Side fascia, offer two steel bushing holes, each plate gear is for running through one 4 tooth minor axises and being fixed together, these described 4 tooth minor axises are for being installed on the Side fascia by steel bushing and steel bushing hole, and the position of these described 4 tooth minor axises, plate gear and the normal shaft gear end of 5 teeth is for fixing.

During lifting, the gear and two plate gear interlocks mutually of the normal axle of described 5 teeth, and described 4 tooth minor axises be positioned at the splined hole gear both sides and and this splined hole gear be interlocked, therefore, when sprocket rotation will drive normal rotation of 5 teeth, described two plate gears and 4 tooth minor axises also rotate thereupon, thereby drive the splined hole gear and open the rotation of heavy chain wheel, and then realize slinging to weight.

And chain block described in the utility model mainly is when being implemented in not lifting weight, needn't rotating sprocket during the lifting hoisting chain.

Therefore, and shown in Fig. 1, Fig. 2 A, Fig. 2 B and Fig. 3,4 tooth minor axises 4 and plate gear 3 described in the chain block described in the utility model are movable with respect to the gear end of the normal axle 2 of 5 teeth, when this chain block lifting weight or not lifting weight, the position changes for the gear end with respect to the normal axle of 5 teeth; Wherein, described 4 tooth minor axises, 4 one ends are combined into a serial verb construction for being arranged in the described steel bushing 6 and with this steel bushing 6, and the then described 4 tooth minor axises 4 of steel bushing 6 motions are movement therewith also, thereby also drive plate gear 3 motions; And in this application, during not lifting weight, described plate gear 3 be gear end with the normal axle 2 of 5 teeth for to separate, i.e. not interlock between the two.

The utility model is for offering a cross sections 60 on the steel bushing 6 that is installed on the Side fascia 1; In addition, on the described Side fascia 1 and deviate from and be movably equipped with a movable part 11 on the one side of installing 4 tooth minor axises 4, this movable part 11 is for being between the two steel bushing holes 10, and this described movable part 11 comprises the locking plate 110 of a corresponding steel bushing respectively, and with respect to the cross sections 60 on the described steel bushing 6, have an inclined-plane 1100 respectively at this described locking plate 110 and towards steel bushing hole 10 1 ends, this described inclined-plane 1100 matches with cross sections 60 on the steel bushing 6.

As shown in Figure 3, and between described locking plate 110, be connected with a spring 7, and on the spring 7 between this locking plate 110, be equiped with a rotation and turn round 112, rotate this rotation turn round 112 can make be connected in spring 7 between the locking plate 110 take place flexible, thereby can make the inclined-plane 1100 of locking plate 110 stretch into or withdraw from described cross sections 60.

In addition, described 4 tooth minor axises 4 and an end that is movably placed in the steel bushing 6 are provided with draw-in groove and jump ring (not shown), so that this end is free to rotate but can not withdraw from steel bushing 6 when being arranged in steel bushing 6, thereby but make this 4 tooth minor axis 4, steel bushing 6 and plate gear 3 form the integral body of interlocks.

Again, the axle at these described 4 tooth minor axises 4 two ends will be grown with respect to the axle at 4 tooth minor axis two ends in the chain block under the prior art, also can make to be unlikely to deviate from this steel bushing 6 when this 4 tooth minor axis 4 carries out axially activity with steel bushing 6.

Described steel bushing 6 also will be grown with respect to the length of the steel bushing under the prior art, and 4 tooth minor axises 4 described in the utility model are placed on the length requirement length that will be longer than this steel bushing 6 slightly especially of that end of steel bushing 6, and on this described steel bushing 6, also be arranged with a spring 7, this described spring 7 is given the propelling thrust outside with described steel bushing 6 one when withdrawing from the cross sections 60 of steel bushing 6 on locking plate 110 inclined-planes, the power that promptly deviates from plate gear 3 directions, thereby drive 4 motions of 4 tooth minor axises, and then make plate gear 3 move.

During the lifting weight, clockwise rotate to rotate and turn round 112, at this moment, spring 7 elongations between the described locking plate, the inclined-plane 1100 of described locking plate 110 moves along arrow A shown in Fig. 3 and arrow B direction respectively, and simultaneously, past plate gear 3 directions are exerted all one's strength and pinned described steel bushing 6, make the inclined-plane of described locking plate 110 stretch to the cross sections 60 on the described steel bushing 6 just, thereby described steel bushing 6 is pinned.

At this moment, toward the normal direction of principal axis of 5 teeth place motion, and then plate gear 3 also moves toward the normal axle of 5 teeth 2 directions described 4 tooth minor axises 4 under the promotion of steel bushing 6, and with the gear end normal occlusion of the normal axle 2 of this 5 tooth, thereby normal lifting weight; And in this described process, under the effect of the spring force between the described locking plate 110, this described spring 7 is also given the strength that contacts toward cross sections 60 with locking plate 110, and then can guarantee that when the lifting weight this described locking plate can pin the cross sections 60 of this steel bushing 6 always, guarantees the fairness of lifting weight.

When the inclined-plane 1100 of locking plate 110 withdraws from cross sections 60 on the described steel bushing 6, then the effect of the sheathed thereon spring 7 of steel bushing 6 goes out motion toward deviating from the normal axle of 5 teeth 2 directions down, thereby driving described 4 tooth minor axises, 4 drive plate gears 3 separates with the gear of the normal axle 2 of 5 teeth, thereby realize the free lifting of lifting chain, and unnecessary rotating sprocket improves rotational efficiency.

Claims

1. chain block, comprise the normal axle of 5 teeth, sprocket wheel, ratchet, friction lining, the drg seat, open the heavy chain wheel, outside race, the splined hole gear, 4 tooth minor axises, two plate gears and Side fascia, wherein, the normal axle of 5 teeth is with sprocket wheel, ratchet, friction lining, drg seat and open heavy chain wheel and be applied in together, take turns the hole slot interlock of also passing outside race and gear and splined hole bore and open heavy chain, and on Side fascia, offer two steel bushing holes, 4 tooth minor axises are arranged in plate gear, it is characterized in that, described steel bushing passes described steel bushing hole and Side fascia is located in activity, described 4 tooth minor axises, one end forms a serial verb construction for being arranged in this steel bushing and with this steel bushing, and be arranged with spring on this steel bushing, and also offer a cross sections at this steel bushing one end; Be movably set with movable part on the described Side fascia and on the one side of steel bushing, and this movable part is for being between the two steel bushing holes, and this described movable part and have an inclined-plane that matches with described cross sections respectively towards the two ends of steel bushing.

2. according to the described chain block of claim 1, it is characterized in that described movable part comprises the respectively locking plate of a corresponding steel bushing, and is connected with a spring between this locking plate, and on the spring between this locking plate, be equiped with one and rotate and turn round.