CN101830399B - Hand-operated driving device for crane - Google Patents
Hand-operated driving device for crane Download PDFInfo
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- CN101830399B CN101830399B CN2010101802393A CN201010180239A CN101830399B CN 101830399 B CN101830399 B CN 101830399B CN 2010101802393 A CN2010101802393 A CN 2010101802393A CN 201010180239 A CN201010180239 A CN 201010180239A CN 101830399 B CN101830399 B CN 101830399B
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- crank
- ratchet
- lifting mechanism
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Abstract
The invention discloses a hand-operated driving device for a crane. The driving device comprises a lifting mechanism high-speed shaft and a reduction gear and is characterized by comprising an electromagnetic clutch which is closed in case of power failure, wherein a half of the electromagnetic clutch is connected with the lifting mechanism high-speed shaft, and the other half of the electromagnetic clutch is connected with the reduction gear; the other end of the reduction gear is connected with a driving shaft; the driving shaft is in key joint with an internal pressure plate; the internal pressure plate is in left-hand trapezoidal thread connection with an external pressure plate; inter-axis positioning of the internal pressure plate and the driving shaft are realized through nuts and a washer A; a crank is fixed on the external pressure plate through a bolt and a washer B; and a balancing weight is welded on the crank. Bidirectional self-locking of load rise and fall are ensured through thread transmission, friction transmission and reasonable fitting of a pawl, and the safety and reliability of a lifting device are enhanced by using the electromagnetic clutch which is closed in case of power failure and the balancing weight welded on the crank.
Description
Technical field
This device relates to the lifting mechanism of handling machinery, uses hand-cranking running gear when relating in particular to the outage of crane hoisting mechanism of high security requirement.
Background technology
The hoisting crane of work under special operation condition, when suffering to have a power failure suddenly, lifting mechanism needs safety to transfer load or slowly goes up the transfer lotus to assigned address, so the normal cover hand-cranking running gear that is equipped with.But the hand gear of existing hand-cranking running gear such as the disclosed crane hoisting mechanism of patent ZL200520128465.1, simple mechanism realizes through manual clutch and crank etc.Clump weight is not set on the crank, can not guarantees that the screw thread actv. screws; When hoisting crane is charged, if forgetting, operating personal opens power-transfer clutch, can under the deadweight effect of lifted load, drive driven by shaking mechanism backward rotation, safety misadventure takes place easily; And most importantly, when adopting prior art manually to descend load, need artificially ratchet to be unclamped, at this moment unclamp crank suddenly owing to slip up like operating personal, can cause safety misadventure too.
Therefore improve the shortcoming of existing hand-cranking running gear, improve its safety and become one of technical barrier that needs to be resolved hurrily.
Summary of the invention
Proposition of the present invention is intended to design a kind of hand-operated driving device for crane through adopting the technical scheme of load rising and decline bidirectional self-locking.
Technical solution of the present invention is achieved in that
A kind of hand-operated driving device for crane comprises lifting mechanism high speed shaft and speed reduction gearing, it is characterized in that: comprise power-failure close type power-transfer clutch; The half the of power-failure close type magnetic clutch connects with the lifting mechanism high speed shaft; Second half connects with speed reduction gearing, and the other end of speed reduction gearing connects with axle drive shaft, axle drive shaft and interior platen key connecting; Connect the axial location in nuts and washers A realizes between platen and the axle drive shaft between interior platen and the external pressure plate for left-handed Acme thread; Crank is fixed on the external pressure plate through bolt and packing ring B, and clump weight is welded on the crank; Lifting mechanism normal work period, the rotation of lifting mechanism high speed shaft can not be delivered to speed reduction gearing and reach each Transmission thereafter; After the power failure, power-failure close type magnetic clutch is closed, the anticlockwise motion crank; External pressure plate is with the crank left-hand revolution, and the left-handed Acme thread between interior platen and the external pressure plate is screwed, and friction lining and ratchet are compacted; Interior platen begins to rotate; And rotation is passed to axle drive shaft through key, afterwards through speed reduction gearing Driving Lifting Mechanism high speed shaft, realize that load hoists; If careless manipulation unclamps crank, load rotates lifting mechanism high speed shaft clockwise direction under the deadweight effect; Drive interior platen through speed reduction gearing, axle drive shaft and key and clockwise rotate, because of the minus thread of interior platen and external pressure plate, friction lining and ratchet are compacted; And clockwise rotating trend, ratchet assembles ratchet lock, stops to rotate; Clump weight increases the inertia of crank, and platen and external pressure plate screw in being convenient to; When needs load descends; Clockwise rotate crank, the minus thread of interior platen and external pressure plate unclamps, and load descends under the deadweight effect; Lifting mechanism high speed shaft, speed reduction gearing, axle drive shaft and interior platen are rotated along clockwise direction; Friction lining and ratchet are compacted, and ratchet assembles ratchet lock, stop to rotate; When if the lifting mechanism high speed shaft needs clockwise direction to rotate or speed reduction gearing when changing transmission direction, only need to connect, and change the ratchet and pawl assembling into the conter clockwise locking and get final product changing the dextrorotation Acme thread between interior platen and the external pressure plate into.
Compared with prior art, advantage of the present invention is obvious, mainly shows:
1, realize that load hoists and the bidirectional self-locking that descends, safe.
2, increase clump weight on the crank, guarantee the reliability of screw thread self-locking.
3, adopt power-failure close type magnetic clutch, simple to operate.
Description of drawings
Fig. 1 hand-cranking running gear front view;
The A of Fig. 2 Fig. 1 is to view.
Among the figure: 1, lifting mechanism high speed shaft; 2, power-failure close type magnetic clutch; 3, bearing; 4, interior platen; 5, friction lining; 6, ratchet; 7, external pressure plate; 8, axle drive shaft; 9, nut; 10, packing ring A; 11, bolt; 12, packing ring B; 13, crank; 14, clump weight; 15, ratchet assembling; 16, key; 17, speed reduction gearing.
The specific embodiment
As depicted in figs. 1 and 2, a kind of hand-operated driving device for crane.
Its invention thinking is through reasonable combination such as screw thread transmission, frictional transmission and clicks, guarantees that load hoists and the bidirectional self-locking that descends, and through adopting power-failure close type magnetic clutch and crank clump weight to improve the safe reliability of this device.
This device is made up of lifting mechanism high speed shaft 1, power-failure close type magnetic clutch 2, bearing 3, interior platen 4, friction lining 5, ratchet 6, external pressure plate 7, axle drive shaft 8, nut 9, packing ring A10, bolt 11, packing ring B12, crank 13, clump weight 14, ratchet assembling 15, key 16 and speed reduction gearing 17.See Fig. 1 and Fig. 2 for details.
When supposing lifting mechanism high speed shaft 1 by anticlockwise motion shown in Figure 2, load rises, and hypothesis speed reduction gearing 17 does not change transmission direction.
The half the of power-failure close type magnetic clutch 2 connects with lifting mechanism high speed shaft 1, and second half connects with speed reduction gearing 17, and speed reduction gearing 17 can be patterns such as chain-driving or gear transmission, and the other end of speed reduction gearing 17 connects with axle drive shaft 8.Interior platen 4 connects through key 16 with axle drive shaft 8, the axial location in nut 9 and packing ring A10 realize between platen 4 and the axle drive shaft 8.Connect for left-handed Acme thread between interior platen 4 and the external pressure plate 7, crank 13 is fixed on the external pressure plate 7 with packing ring B12 through bolt 11, and clump weight 14 is welded on the crank 13.
The lifting mechanism normal work period, power-failure close type magnetic clutch 2 is opened, and the rotation of lifting mechanism high speed shaft 1 can not be delivered to speed reduction gearing 17 and reach each Transmission thereafter.After the power failure,, press anticlockwise motion crank 13 among Fig. 2 with power-failure close type magnetic clutch 2 closures; At this moment, external pressure plate 7 is with crank 13 left-hand revolutions, and the left-handed Acme thread between interior platen 4 and the external pressure plate 7 is screwed; Friction lining 5 is compacted with ratchet 6, and interior platen 4 begins to rotate, and through key 16 rotation is passed to axle drive shaft 8; Pass through speed reduction gearing 17 afterwards, Driving Lifting Mechanism high speed shaft 1, thus realize that load hoists.
If operating personal unclamps crank 13 accidentally, then load causes lifting mechanism high speed shaft 1 to rotate by clockwise direction among Fig. 2 under the deadweight effect; Drive interior platen 4 through speed reduction gearing 17, axle drive shaft 8 and key 16 and clockwise rotate, through the minus thread of interior platen 4 and external pressure plate 7, friction lining 5 is compacted with ratchet 6; And clockwise rotate trend, at this moment, ratchet assembling 15 is with sour jujube 6 lockings; Stop and rotate, clump weight 14 increases the inertia of crank 13, and platen 4 screws with external pressure plate 7 in being convenient to.
When needs load descends; By the crank 13 that clockwise rotates shown in Figure 2, the minus thread of interior platen 4 and external pressure plate 7 unclamps, and load descends under the deadweight effect; Lifting mechanism high speed shaft 1, speed reduction gearing 17, axle drive shaft 8 and interior platen 4 are rotated along clockwise direction; Friction lining 5 is compacted with ratchet 6, and ratchet assembling 15 stops ratchet 6 lockings to rotate.Be that crank 13 clockwise rotates certain angle, the load segment distance that just can descend accordingly.
When if lifting mechanism high speed shaft 1 rotates by clockwise direction shown in Figure 2; Load rises; Or speed reduction gearing 17 only needs to connect changing the dextrorotation Acme thread between interior platen 4 and the external pressure plate 7 into when changing transmission direction, and changes ratchet 6 and ratchet assembling 15 into the conter clockwise locking and get final product.
Claims (1)
1. hand-operated driving device for crane; Comprise lifting mechanism high speed shaft (1) and speed reduction gearing (17); It is characterized in that: comprise power-failure close type magnetic clutch (2), the half the of power-failure close type magnetic clutch (2) connects with lifting mechanism high speed shaft (1), and second half connects with speed reduction gearing (17); The other end of speed reduction gearing (17) connects with axle drive shaft (8); Connect the axial location between nut (9) and interior platen (4) of packing ring A (10) realization and the axle drive shaft (8) for left-handed Acme thread between axle drive shaft (8) and interior platen (4) key connecting, interior platen (4) and external pressure plate (7); Crank (13) is fixed on the external pressure plate (7) through bolt (11) and packing ring B (12), and clump weight (14) is welded on the crank (13); Lifting mechanism normal work period, the rotation of lifting mechanism high speed shaft (1) can not be delivered to speed reduction gearing (17) and reach each Transmission thereafter; After the power failure, power-failure close type magnetic clutch (2) closure, anticlockwise motion crank (13); External pressure plate (7) is with crank (13) left-hand revolution, and the left-handed Acme thread between interior platen (4) and the external pressure plate (7) is screwed, and friction lining (5) and ratchet (6) are compacted; Interior platen (4) begins to rotate; And rotation is passed to axle drive shaft (8) through key (16), afterwards through speed reduction gearing (17) Driving Lifting Mechanism high speed shaft (1), realize that load hoists; If operating personal unclamps crank (13) accidentally, load rotates lifting mechanism high speed shaft (1) clockwise direction under the deadweight effect; Driving interior platen (4) through speed reduction gearing (17), axle drive shaft (8) and key (16) clockwise rotates; Because of the minus thread of interior platen (4) and external pressure plate (7), friction lining (5) and ratchet (6) are compacted, and clockwise rotate trend; Ratchet assembling (15) locks ratchet (6); Stop and rotate, clump weight (14) increases the inertia of crank (13), is convenient to interior platen (4) and screws with external pressure plate (7); When needs load descends; Clockwise rotate crank (13), the minus thread of interior platen (4) and external pressure plate (7) unclamps, and load descends under the deadweight effect; Lifting mechanism high speed shaft (1), speed reduction gearing (17), axle drive shaft (8) and interior platen (4) are rotated along clockwise direction; Friction lining (5) and ratchet (6) are compacted, and ratchet assembling (15) stops ratchet (6) locking to rotate; When if lifting mechanism high speed shaft (1) needs clockwise direction to rotate or speed reduction gearing (17) when changing transmission direction; Only need to connect, and ratchet (6) and ratchet are assembled (15) change conter clockwise into and lock and get final product changing the dextrorotation Acme thread between interior platen (4) and the external pressure plate (7) into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101802393A CN101830399B (en) | 2010-05-20 | 2010-05-20 | Hand-operated driving device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101802393A CN101830399B (en) | 2010-05-20 | 2010-05-20 | Hand-operated driving device for crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101830399A CN101830399A (en) | 2010-09-15 |
| CN101830399B true CN101830399B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101802393A Active CN101830399B (en) | 2010-05-20 | 2010-05-20 | Hand-operated driving device for crane |
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| CN (1) | CN101830399B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106081971A (en) * | 2016-06-30 | 2016-11-09 | 河南工业职业技术学院 | Machine driving bidirectional self-locking apparatus |
| CN106395578B (en) * | 2016-11-14 | 2018-12-18 | 中国船舶重工集团公司第七0四研究所 | Light hand elevating mechanism hand crank transmission device |
| CN108275554B (en) * | 2018-01-31 | 2023-08-04 | 江苏通用电梯有限公司 | Multiple protection formula elevator |
| CN111747292B (en) * | 2020-06-23 | 2022-07-05 | 中国五冶集团有限公司 | A conveyer for curbstone transportation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2291403Y (en) * | 1996-09-01 | 1998-09-16 | 陈宏浩 | Small hand winder |
| CN2825570Y (en) * | 2005-10-11 | 2006-10-11 | 大连华锐股份有限公司 | Hand-operated mechanism for hoisting mechanism of crane |
| CN201284204Y (en) * | 2008-06-04 | 2009-08-05 | 翟贵才 | Transmission braking system of self locking electric hoisting machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004284691A (en) * | 2003-03-19 | 2004-10-14 | Kayaba Ind Co Ltd | Conveyance device |
| TWM318013U (en) * | 2007-02-09 | 2007-09-01 | Yi-De Pan | Safety apparatus of integrated over-loading and braking for load-bearing winding mechanism |
-
2010
- 2010-05-20 CN CN2010101802393A patent/CN101830399B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2291403Y (en) * | 1996-09-01 | 1998-09-16 | 陈宏浩 | Small hand winder |
| CN2825570Y (en) * | 2005-10-11 | 2006-10-11 | 大连华锐股份有限公司 | Hand-operated mechanism for hoisting mechanism of crane |
| CN201284204Y (en) * | 2008-06-04 | 2009-08-05 | 翟贵才 | Transmission braking system of self locking electric hoisting machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特開2004-284691A 2004.10.14 |
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| Publication number | Publication date |
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| CN101830399A (en) | 2010-09-15 |
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Owner name: DALIAN HUARUI HEAVY INDUSTRY GROUP CO., LTD. Free format text: FORMER OWNER: HUARUI CO., LTD., DALIAN Effective date: 20120405 |
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Effective date of registration: 20120405 Address after: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Patentee after: Dalian Huarui Heavy Industry Group Co., Ltd. Address before: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Patentee before: Huarui Co., Ltd., Dalian |