CN2159954Y - Manually operated pulley block with hook capable of fast lifting when loading free - Google Patents
Manually operated pulley block with hook capable of fast lifting when loading free Download PDFInfo
- Publication number
- CN2159954Y CN2159954Y CN 92237170 CN92237170U CN2159954Y CN 2159954 Y CN2159954 Y CN 2159954Y CN 92237170 CN92237170 CN 92237170 CN 92237170 U CN92237170 U CN 92237170U CN 2159954 Y CN2159954 Y CN 2159954Y
- Authority
- CN
- China
- Prior art keywords
- gear
- chain
- lifting
- bearing
- suspension hook
- 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 - Fee Related
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Abstract
The utility model belongs to a lifting device, particularly a manually operated pulley block with hooks capable of fast lifting when loading free. The manually operated pulley block is the improvement of the existing manually operated pulley block. A gear drive mechanism is provided with a declutching device, which can make a follower gear separate from a drive gear and a driven gear, rather than engage with the drive gear and the driven gear. When the gears are separated, a start wheel can be rotated quickly after pulling, which can accelerate the lifting speed of hook when the manually operated pulley block is loading free. Consequently, the purposes of time saving, labor saving and improved work efficiency are attained.
Description
The utility model belongs to lifting means, but particularly a kind of chain block of suspension hook fast lifting when not promoting object.
Chain block is the lighter small-sized lifting means of using always, and relatively large weight-lifting equipment and operationlocation are narrow and small often to be changed again, promote under the situation that the lifting object is heavy, hoisting depth is not high not possessing, and using chain block is light and flexible very.But because the transmission of chain block is undertaken by two sprocket wheels and transmission gear, transmitting ratio is bigger, and when pulling pulled chain, the speed that the lifting chain of connecting shackle rotates is quite slow, and (pulling chain need spur about 45 meters, lifting chain could rotate 1 meter), so just occurred when not promoting object, the same during also with lifting lifting object, suspension hook rises or descends, pull chain and need spur very long distance, and the speed of hook lifting is very slow, not only requires great effort but also time-consuming, and work efficiency is lower.
The purpose of this utility model, but just provide a kind of chain block of suspension hook fast rise or decline when not promoting object, and this chain block can make the lifting chain twirl of connecting shackle, thereby can make suspension hook fast rise or decline when not promote object.
To achieve these goals, the utility model is a kind of improvement that existing chain block is carried out, be under its keystone configuration unmodified situation, having increased by one makes it when not promoting object, two ring gears in the transmission gear and driving gear and driven gear are separated, even transmission gear is in the arrangement of clutch of non-engagement state.This arrangement of clutch is: the two ends of two passive tooth wheel shafts are stretched out by bearing respectively and are held outside the axle, go out an end of the bearing on the adapter plate in the ring gear shaft extension, by clamping plate of the bolt on its end, the clamping plate lower end connects an arm-tie, be equipped with two cramp bars between arm-tie and the adapter plate, the lower end of arm-tie connects a stay cord, and stay cord is respectively placed a spring by the circular hole on the support plate on the bolt under the fixed mount on two passive tooth wheel shafts.Just constituted a lever like this between arm-tie and the adapter plate, when the pulling stay cord, utilize leverage, the passive tooth wheel shaft just laterally moves laterally, thereby ring gear and driving gear and driven gear are separated, and the gear in the gear train assembly is just from the original state that is meshing with each other, become the non-engagement state that leaves mutually, this moment, lifting chain just can twirl when spurring lifting chain, reached the purpose of suspension hook fast lifting.
Promote or hang next object when finishing, go again to promote or hang down before another object, suspension hook will rise or drop to needed position, use this chain block, because suspension hook can fast lifting, thereby can shorten the lifting time of suspension hook greatly, save time thereby can reach, laborsaving, as to increase work efficiency purpose.Simultaneously, this chain block has just increased arrangement of clutch, and former major part does not change its structure, therefore makes easily, and is easy to utilize.
The utility model is done to be described in detail with embodiment below in conjunction with accompanying drawing:
Accompanying drawing 1: the utility model overall schematic;
Accompanying drawing 2: the utility model unloads the front elevation behind the lower cover;
Accompanying drawing 3: the utility model unloads the birds-eye view behind the lower cover;
Accompanying drawing 4: the scheme drawing when the utility model transmission gear is in non-engagement state.
As shown in drawings, the utility model is by the chain hoist wheel (12) in the fixed mount (10), lifting chain (18), the lifting chain rotating mechanism that suspension hook (19) is formed, fixed mount (10) one sides are by pulling sprocket wheel (15), pull chain (16), ratchet (17) is formed pulls the chain rotating mechanism, by main shaft (14), driving gear (24), ring gear (7), gear drive that driven gear (8) is formed and last hook (11), cover bodies (22) (23) etc. constitute, it is characterized in that: gear drive is provided with and can makes ring gear (7) break away from the arrangement of clutch of driving gear (24) and driven gear (8), this arrangement of clutch is: the two ends of two passive tooth wheel shafts (6) that two ring gears (7) that are meshed with driving gear (7) and driven gear (8) fix, respectively by being fixed on the bearing (25) on adapter plate (9) and the fixed mount (10), (26), and wheel shaft (6) is stretched out outside the bearing (25) (26), stretch out an end of bearing (25) at passive tooth wheel shaft (6), by clamping plate of the bolt on its end (4), clamping plate (4) lower end connects an arm-tie (2), be equipped with two cramp bars (3) between arm-tie (2) and the adapter plate (9), the lower end of arm-tie (2) connects a stay cord (1), stay cord (1) is by the circular hole on the last support plate of following bolt (20) (21) of fixed mount (10), on two passive tooth wheel shafts (6), between bearing (25) and ring gear (7), respectively place a spring (5).
Passive tooth wheel shaft (6) passes adapter plate (9) and fixed mount (10) by the bearing (25) (26) that is fixed on adapter plate (9) and the fixed mount (10) respectively, when doing engaged transmission between each gear, passive tooth wheel shaft (6) is vertically to rotate, and when ring gear (7) breaks away from driving gear (24) and flower wheel (8), passive tooth wheel shaft (6) laterally moves, in order to make passive tooth wheel shaft (6) when laterally moving, cylindrical roller in the bearing (25) (26) is unlikely that to be taken out of bearing (25) (26) external, puts a bearing cap shim (26) (27) in the end of bearing (25) (26).
Use this chain block when promoting or hang object, still identical with existing chain block, be to be in transmission campaign under the state of being meshing with each other at transmission gear, this moment is when pulling chain (16) when pulling, lifting chain (18) velocity of rotation is slower, it is just slower when suspension hook (19) rises or descends, after the work that promotes or hang down object is finished, just can be with pulling moving stay cord (1), under the effect of lever, the lower end of arm-tie (2) is to the direction motion of cramp bar (3), the clamping plate (4) that are connected with arm-tie (2) then move in the opposite direction, thereby driving two passive tooth wheel shafts (6) outwards moves laterally, ring gear (7) on the passive tooth wheel shaft (6) is separated with driving wheel (24) and flower wheel (8), makes between each gear to be in non-engagement state, at this moment spur lifting chain (18) again, lifting chain (18) is just done twirl on chain hoist wheel (12), drive suspension hook (19) fast rise or decline.Promote again or when hanging down object, can unclamp stay cord (1), because the effect of the spring (5) on the passive tooth wheel shaft (6), passive tooth wheel shaft (6) and ring gear (7) laterally move, arm-tie (2) just returns to original position, ring gear (7) also recovers the home position at last, ring gear (7) is in engagement with driving gear (24) and driven gear (8) again, can promote or hang down object normally again, brake with ratchet (17) and ratchet pawl (13).
Claims (3)
1, but a kind of chain block of suspension hook fast lifting when not promoting object, be by the chain hoist wheel (12) in the fixed mount (10), lifting chain (18), the lifting chain rotating mechanism that suspension hook (19) is formed, fixed mount (10) one sides are by pulling sprocket wheel (15), pull chain (16), ratchet (17) is formed pulls the chain rotating mechanism, by main shaft (14), driving gear (24), ring gear (7), the gear drive that driven gear (8) is formed, and go up and link up with (11), cover bodies (22) (23) etc. constitute, and it is characterized in that gear drive is provided with the arrangement of clutch that can make ring gear (7) disengaging driving gear (24) and driven gear (8).
2, but the chain block of suspension hook fast lifting when not promoting object according to claim 1, it is characterized in that said arrangement of clutch is: the two ends of two the passive tooth wheel shafts (6) that fix with two ring gears (7), respectively by being fixed on the bearing (25) on adapter plate (9) and the fixed mount (10), (26), and bearing (25) is stretched out at the two ends that make passive tooth wheel shaft (6), (26) outside, stretch out an end of bearing (25) at passive tooth wheel shaft (6), by clamping plate of the bolt on its end (4), clamping plate (4) lower end connects an arm-tie (2), be equipped with two cramp bars (3) between arm-tie (2) and the adapter plate (9), the lower end of arm-tie (2) connects a stay cord (1), stay cord (1) is by the circular hole on the last support plate of following bolt (20) (21) of fixed mount (10), on two passive tooth wheel shafts (6), between bearing (25) and ring gear (7), respectively place a spring (5).
3, but the chain block of suspension hook fast lifting when not promoting object according to claim 1 and 2 is characterized in that being equipped with bearing cap shim (27), (28) in the end of bearing (25), (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237170 CN2159954Y (en) | 1992-11-26 | 1992-11-26 | Manually operated pulley block with hook capable of fast lifting when loading free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237170 CN2159954Y (en) | 1992-11-26 | 1992-11-26 | Manually operated pulley block with hook capable of fast lifting when loading free |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159954Y true CN2159954Y (en) | 1994-03-30 |
Family
ID=33778493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92237170 Expired - Fee Related CN2159954Y (en) | 1992-11-26 | 1992-11-26 | Manually operated pulley block with hook capable of fast lifting when loading free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159954Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572186A (en) * | 2017-08-21 | 2018-01-12 | 盐城雄鹰精密机械有限公司 | Spacing synchronous lifting device |
| CN111252686A (en) * | 2020-03-24 | 2020-06-09 | 燕山大学 | Manual chain hoist with rapid lifting clutch device |
-
1992
- 1992-11-26 CN CN 92237170 patent/CN2159954Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572186A (en) * | 2017-08-21 | 2018-01-12 | 盐城雄鹰精密机械有限公司 | Spacing synchronous lifting device |
| CN111252686A (en) * | 2020-03-24 | 2020-06-09 | 燕山大学 | Manual chain hoist with rapid lifting clutch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |