CN201390622Y - Manual crane clutch structure - Google Patents
Manual crane clutch structure Download PDFInfo
- Publication number
- CN201390622Y CN201390622Y CN200920145081U CN200920145081U CN201390622Y CN 201390622 Y CN201390622 Y CN 201390622Y CN 200920145081 U CN200920145081 U CN 200920145081U CN 200920145081 U CN200920145081 U CN 200920145081U CN 201390622 Y CN201390622 Y CN 201390622Y
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- CN
- China
- Prior art keywords
- ratchet
- break
- wheel
- flower wheel
- axle sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
A manual crane clutch structure comprises a driven wheel which comprises a disc-shaped wheel body, a shaft sleeve projecting axially is arranged in the middle of the wheel body, and external threads are formed at the free end part of the shaft sleeve; a reverse rack wheel sleeved on the shaft sleeve of the driven wheel, when the load of the manual crane exceeds the binding force between the reverse rack wheel and the driven wheel, the reverse rack wheel is to rotate relative to the driven wheel, namely, the driven wheel can't be driven to enable the crane to hoist so as to achieve the object of clutch; at least an elastic element sleeved on the shaft sleeve, which provides the pushing force for the reverse rack wheel in the axial direction so as to improve the binding force between the driven wheel and the reverse rack wheel; a shaft sleeve locked on the external threads at the end part of the driven wheel shaft sleeve, which not only can prevent the reverse rack wheel and the elastic element from dropping off the driven wheel, but also can compress the elastic element to change the binding force between the reverse rack wheel and the driven wheel. The utility model can carry out auto clutch when overloading, so as to ensure the safety.
Description
Technical field
The utility model relates to a kind of hand crane, can guarantee safe hand crane clutch configuration by automatic clutch when relating in particular to a kind of the overload.
Background technology
Hand crane belongs to the physical construction that a kind of light weight lifting rises, the part ease of assembly or the processing that are generally used for car loading and unloading weight or sling heavier in the working space.Because it is simple in structure and be not subject to the restriction in place, so its range of use is quite extensive.
The operating principle of hand crane mainly is to utilize a rocking arm rotation drive machine and winding structure and then coiling chain or wirerope and reach the purpose of the weight of slinging in regular turn.Existing hand crane is because of having clutch function, therefore, often do not know overload operation under the situation of actual weight of the load limit of crane and weight the user.Thus, the not only dangerous service life that also can cause the excessive abrasion between parts and reduce crane.
Safety when in view of this, just having the maker of crane between rocking arm and winding structure, to install a power-transfer clutch additional to use so as to replacing existing transmission device and improving hand crane.Existing hand crane power-transfer clutch mainly is the ratchet structure that utilizes two sides to fit, when hand crane transships, two original ratchet structures of fitting mutually can be fitted the friction force that produced less than load because of both, and the generation sliding phenomenon makes the purpose that produces the idle running phenomenon between the two and then reach automatic clutch.
The mutual forward ratchet structure of interlock, though the function of automatic clutch can be provided when hand crane transships, but ratchet causes the phenomenon that but is easy to generate vibration in the process of reset (interlock again) in clutch in the process of clutch, under the situation of height load, produce the occlusal surface that vibrates for ratchet itself and can cause very big impact, shorten its service life, even the danger of bursting apart is arranged.
The utility model content
Technical problem underlying to be solved in the utility model is, overcomes the above-mentioned defective that prior art exists, and a kind of hand crane clutch configuration is provided, can automatic clutch during its overload and guarantee safety.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of hand crane clutch configuration, it is characterized in that, comprise: a flower wheel, this flower wheel includes a plate-like wheel body, the center of this wheel body is axially stretched and is provided with an axle sleeve, the free end of this axle sleeve is to be formed with outside thread, and this wheel body then equidistantly is provided with several knock holees and surrounds a concentric circles corresponding to wheel body with respect to the one side of axle sleeve, and is equipped with a steel ball in each knock hole; One is sheathed on the break-in ratchet on the axle sleeve of flower wheel, when the load of hand crane surpasses binding force between break-in ratchet and flower wheel, the break-in ratchet can rotate with respect to flower wheel, that is can't drive flower wheel and make crane be engaged in the purpose of hanging operation and reaching clutch; The periphery of this break-in ratchet is to be formed with serial tooth portion to link so as to the rocking arm with crane, the one side that this break-in ratchet fits in flower wheel forms several guiding skewed slots, after the break-in ratchet is assembled in axle sleeve, each guiding skewed slot is to be communicated with a cooresponding knock hole, makes steel ball be placed in knock hole respectively and guide in the skewed slot; At least one cover is penetrated the elastic element on axle sleeve, this at least one elastic element provide the break-in ratchet shaft to thrust, to improve the binding force between itself and flower wheel; One is locked on the axle sleeve on the outside thread of flower wheel axle sleeve end, and this axle sleeve is except that avoiding break-in ratchet and elastic element from flower wheel breaks away from, and compressible spring member is to change the binding force between break-in ratchet and flower wheel simultaneously.
Aforesaid hand crane clutch configuration, wherein guiding skewed slot and be drop-shaped kenel and its degree of depth and width is design in direct ratio, the degree of depth summation of the innermost degree of depth of this guiding skewed slot and knock hole is slightly larger than the diameter of steel ball.
Aforesaid hand crane clutch configuration, wherein the break-in ratchet differs from the storage tank that flower wheel centre simultaneously is formed with ccontaining this at least one elastic element of a confession.
Aforesaid hand crane clutch configuration, wherein at least one elastic element are two reverse superimposed dish-type springs.
The beneficial effects of the utility model are, can automatic clutch during its overload and guarantee safety.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the enforcement scheme drawing of the utility model when being installed on hand crane.
Fig. 2 is a cutaway view of the present utility model.
Fig. 3 is the cutaway view of the utility model flower wheel.
Fig. 4 is the front elevation of the utility model flower wheel.
Fig. 5 is the front elevation of the utility model break-in ratchet.
Fig. 6 is the cutaway view of the utility model break-in ratchet.
Fig. 7 is an action scheme drawing of the present utility model.
The number in the figure explanation:
10 flower wheels, 11 wheel bodys, 12 axle sleeves
121 outside threads, 13 knock holees, 14 steel balls
20 break-in ratchets, 21 tooth portions, 22 guiding skewed slots
23 storage tanks
30 elastic elements, 40 nuts, 50 rocking arms
Has embodiment
The utility model relates to a kind of clutch configuration of hand crane, see also as Fig. 1 to shown in Figure 2, it consists predominantly of a flower wheel 10, be arranged with a break-in ratchet 20 and at least one elastic element 30 on this flower wheel 10 in regular turn, and, avoid break-in ratchet 20 and elastic element 30 on flower wheel 10, to break away from by a nut 40 of being located on the flower wheel 10.Wherein, this elastic element 30 is axial ejection break-in ratchets 20, forces break-in ratchet 20 to be close to flower wheel 10 and improves the binding force of 10 of break-in ratchet 20 and flower wheels, and this friction is the load limit of hand crane.In addition, adjust the position of nut 40 and can adjust the thrust that elastic element 30 is bestowed break-in ratchet 20, and then change break-in ratchet 20 and the binding force that flower wheel 10 combines, that is to say, utilize nut 40 can easily adjust the load limit of hand crane, to adapt to the different demands of hanging.
See also Fig. 2 to shown in Figure 4, this flower wheel 10 includes a plate-like wheel body 11, and the center of this wheel body 11 is then axially stretched and is provided with an axle sleeve 12, and the free end of this axle sleeve 12 is formed with outside thread 121.This wheel body 11 then equidistantly is provided with several knock holees 13 with respect to the one side of axle sleeve 12, and in the preferred embodiment of the present utility model, the quantity of knock hole 13 is made as six, and surrounds a concentric circles corresponding to wheel body 11, and is equipped with a steel ball 14 in each knock hole 13.
See also Fig. 2 and Fig. 5 to shown in Figure 6, this break-in ratchet 20 is to be sheathed on the axle sleeve 12 of flower wheel 10, when the load of hand crane surpasses the friction of 10 of break-in ratchet 20 and flower wheels, break-in ratchet 20 can rotate with respect to flower wheel 10, that is can't drive flower wheel 10 and make crane be engaged in the purpose of hanging operation and reaching clutch.
The periphery of this break-in ratchet 20 is formed with serial tooth portion 21, utilizes the connection relation of tooth portion 21 and Rocker arm 50, as shown in Figure 1, and when Rocker arm 50 reciprocally swinging, but this break-in ratchet 20 of unidirectional rotation.The one side that this break-in ratchet 20 fits in flower wheel 10 forms several guiding skewed slots 22, after break-in ratchet 20 is assembled in axle sleeve 12, each guiding skewed slot 22 is to be communicated with a cooresponding knock hole 13, makes steel ball 14 be placed in knock hole 13 respectively and guide in the skewed slot 22.This guiding skewed slot 22 is design in direct ratio for drop-shaped kenel and its degree of depth and width, and the degree of depth summation of these guiding skewed slot 22 innermost degree of depth and knock hole 13 is the diameters that are slightly larger than steel ball 14, as shown in Figure 7.And the centre that this break-in ratchet 20 differs from flower wheel 10 one sides is formed with a storage tank 23.
See also shown in Figure 2, this at least one elastic element 30 is to be sheathed on the axle sleeve 12 of flower wheel 10 and to be placed in the storage tank 23 of break-in ratchet 20, this at least one elastic element 30 provides break-in ratchet 20 axial thrust, to improve the binding force of 10 of itself and flower wheels, in preferred embodiment of the present utility model, this at least one elastic element 30 is two reverse superimposed dish-type springs.
This nut 40 is to be locked on the outside thread 121 of flower wheel 10 axle sleeves 12 ends, except that avoiding break-in ratchet 20 and elastic element 30 break away from flower wheel 10, compressible spring member 30 is so as to improving the binding force of 10 of break-in ratchet 20 and flower wheels simultaneously, be with, adjust nut 40 and can adjust the binding force of break-in ratchet 20 and 10 of flower wheels, and reach the purpose of adjustment hand crane load limit with respect to the position of axle sleeve 12.
See also shown in Figure 7, when the load of crane during not greater than the binding force of 20 on flower wheel 10 and break-in ratchet, steel ball 14 is positioned at the innermost of knock hole 13 and guiding skewed slot 22, makes break-in ratchet 20 and utilize steel ball 14 to drive winding structure in the flower wheels 10 drive cranes and then coiling chain or wirerope smoothly and reach the purpose of the weight of slinging by the binding force of 10 of itself and flower wheels.And when the load of crane during greater than the binding force of 20 on flower wheel 10 and break-in ratchet, meaning is elastic element 30 load of the axial thrust of break-in ratchet 20 less than crane of bestowing, make break-in ratchet 20 just can't relend and drive power wheel 10 by steel ball 14, and rotate with respect to power wheel 10, at this moment, steel ball 14 can slide along guiding skewed slot 22 and also oppositely promote break-in ratchet 20 in entering next guiding skewed slot 22, inform that the user transshipped operation, must adjust the load value of cranes or reduce the workload of crane by nut 40.
In sum, the utility model has following advantage really:
1, part processing is easy.The topmost clutch structure of the utility model is knock hole 13, guiding skewed slot 22 and steel ball 14.Because knock hole 13 is to be arranged with respectively in flower wheel 10 and break-in ratchet 20 with guiding skewed slot 22, so handling ease, and steel ball 14 is existing product on the market, can significantly reduce the productive costs of hand crane.
2, reduce the vibrations that produced when clutch action is carried out.Because guiding skewed slot 22 adopts progressive oblique design, cooperate steel ball 14 with circle can significantly reduce the vibrations that 10 clutch moments of break-in ratchet 20 and flower wheel are produced again, and then prolong the service life of part.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
In sum, the utility model is on structure design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant novel patent requirement is so mention application in accordance with the law.
Claims (4)
1. a hand crane clutch configuration is characterized in that, comprising:
One flower wheel, this flower wheel includes a plate-like wheel body, the center of this wheel body is axially stretched and is provided with an axle sleeve, the free end of this axle sleeve is to be formed with outside thread, this wheel body then equidistantly is provided with several knock holees and surrounds a concentric circles corresponding to wheel body with respect to the one side of axle sleeve, and is equipped with a steel ball in each knock hole;
One is sheathed on the break-in ratchet on the axle sleeve of flower wheel, when the load of hand crane surpasses binding force between break-in ratchet and flower wheel, the break-in ratchet can rotate with respect to flower wheel, that is can't drive flower wheel and make crane be engaged in the purpose of hanging operation and reaching clutch; The periphery of this break-in ratchet is to be formed with serial tooth portion to link so as to the rocking arm with crane, the one side that this break-in ratchet fits in flower wheel forms several guiding skewed slots, after the break-in ratchet is assembled in axle sleeve, each guiding skewed slot is to be communicated with a cooresponding knock hole, makes steel ball be placed in knock hole respectively and guide in the skewed slot;
At least one elastic element that is sheathed on the axle sleeve, this at least one elastic element provide the break-in ratchet shaft to thrust, to improve the binding force between itself and flower wheel;
One is locked on the axle sleeve on the outside thread of flower wheel axle sleeve end, and this axle sleeve is except that avoiding break-in ratchet and elastic element from flower wheel breaks away from, and compressible spring member is to change the binding force between break-in ratchet and flower wheel simultaneously.
2. hand crane clutch configuration according to claim 1, it is characterized in that: described guiding skewed slot is that drop-shaped kenel and its degree of depth and width are designs in direct ratio, and the degree of depth summation of the innermost degree of depth of this guiding skewed slot and knock hole is slightly larger than the diameter of steel ball.
3. hand crane clutch configuration according to claim 1 is characterized in that: the centre that described break-in ratchet differs from the flower wheel one side is formed with a storage tank for ccontaining this at least one elastic element.
4. hand crane clutch configuration according to claim 1 is characterized in that: described at least one elastic element is two reverse superimposed dish-type springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920145081U CN201390622Y (en) | 2009-03-06 | 2009-03-06 | Manual crane clutch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920145081U CN201390622Y (en) | 2009-03-06 | 2009-03-06 | Manual crane clutch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201390622Y true CN201390622Y (en) | 2010-01-27 |
Family
ID=41597444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920145081U Expired - Lifetime CN201390622Y (en) | 2009-03-06 | 2009-03-06 | Manual crane clutch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201390622Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018096200A1 (en) * | 2016-11-24 | 2018-05-31 | Fantek Industrial, S.L. | Safety device for a winch |
-
2009
- 2009-03-06 CN CN200920145081U patent/CN201390622Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018096200A1 (en) * | 2016-11-24 | 2018-05-31 | Fantek Industrial, S.L. | Safety device for a winch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: TopAsia machinery industry (Kunshan) Co., Ltd. Assignor: Cheng Day Machinery Works Co., Ltd. Contract record no.: 2012990000239 Denomination of utility model: Manual crane clutch structure Granted publication date: 20100127 License type: Exclusive License Record date: 20120417 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |