CN203856971U - Differential planet reducer for crane - Google Patents
Differential planet reducer for crane Download PDFInfo
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- CN203856971U CN203856971U CN201420277164.4U CN201420277164U CN203856971U CN 203856971 U CN203856971 U CN 203856971U CN 201420277164 U CN201420277164 U CN 201420277164U CN 203856971 U CN203856971 U CN 203856971U
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Abstract
The utility model relates to a differential planet reducer for a crane. The differential planet reducer comprises an input shaft, a last-stage gear shaft and an output shaft which are parallelly supported on a box, and an intermediate gear pair and a last-stage gear pair. A primary differential planet gear system is disposed in the gear box. The input shaft includes an input gear shaft and a sun gear shaft. The intermediate gear pair comprises an intermediate pinion and an intermediate bull gear. The last-stage gear pair comprises the last-stage gear shaft and a last-stage bull gear. One end of each of the input gear shaft and the sun gear shaft extends out of the box to be in butt joint with a power source. Two ends of the output shaft extends out of the box. The intermediate pinion is mounted on a planet rack. The intermediate bull gear is mounted on the last-stage gear shaft. The intermediate pinion is meshed with the intermediate bull gear. The last-stage bull gear is mounted on the output shaft and meshed with the last-stage gear shaft. An inner-outer gear ring is supported on the planet rack through a gear ring rack and a bearing. The input gear shaft is meshed with the outer teeth of the inner-outer gear ring. A planet gear is meshed with the sun gear shaft and the inner teeth of the inner-outer gear ring at the same time.
Description
Technical field
The utility model relates to a kind of speed reducer, is a kind of differential planetary reducer being applied on hoist.
Background technique
Hoist is all very high crane gears of a kind of safety and reliability requirement, generally all configure parallel-axes gears speed reducer, in order to improve its safety and reliability, generally all configure at present two parallel-axes gears speed reducers, adopt dual-motor, two speed reducer parallel-connection structures drive, and its structure as shown in Figure 1.
As seen from Figure 1; Adopt dual-motor, two speed reducer parallel-connection structures drive be by two motors 15 and 15 ' respectively by coupling 14 and 14 ' with the input shaft 1 and 1 of two speed reducers ' be connected, coupling 14 and 14 ' on be also furnished with break 13 and 13 ', the output shaft 11 and 11 of two speed reducers ' couple together by coupling 17.And first order gearwheel 19 and 19 ' inside of speed reducer inside is with ratchet and pawl arrangement.In the time of normal work, two speed reducers of two common drivings of motor, thus drive reel 16 and 16 ' synchronous working.If wherein a motor breaks down, for example motor 15 breaks down, break 13 is braked immediately herein, coupling 14 and input shaft 1 are braked and do not turn round, at this moment another motor 15 ' still can turn round, and by coupling 14 ', input gear axle 1 ' with and subsequent gear pair at different levels, transmission of power to output shaft 11 ', output shaft 11 ' driving reel 16 ' running, output shaft 11 simultaneously ' transmission of power is arrived to output shaft 11 by coupling 17, so also just drive reel 16 to turn round together, thereby in an electrical fault situation, still can complete slinging work.At this moment the click in first order gearwheel 19 make first order gearwheel 19 inner rings by secondary gear axle 9 with reverse idle running, the outer ring of click gear 10 maintains static together with input gear axle 1.By the usage mode in parallel of the two speed reducers of this dual-motor, although also can still can ensure that in the time that a motor breaks down another motor has continued slinging work, increase the reliability of hoist work.But deficiency is to configure two speed reducers, must two speed reducer output shafts be linked up with a coupling 17, simultaneously, the first order gearwheel inside of speed reducer inside must be with ratchet and pawl arrangement, ratchet and pawl arrangement is complex structure not only, and bearing capacity is limited, and rate of fault is also high, once break down, the work of hoist will be affected; In addition, in the time of an electrical fault, the speed reducer of this parallel way can not regulation output power, the twice moment of torsion that another motor just must be born former Operating torque works on, so this mechanism is in the time selecting power of motor, in order to prevent that arbitrary motor from breaking down, the twice of power demand when they all should meet normal use.As can be seen here, on traditional ladle carne, apply the usage mode in parallel of the two speed reducers of this dual-motor, always great, take up room large, select power of motor large, rate of fault is also high.
Summary of the invention
The purpose of this utility model is: cannot regulation output power by the two speed reducers of conventional dual-motor usage mode system in parallel for current hoist, select power of motor must leave larger surplus, equipment is always great simultaneously, take up room large, rate of fault is high a series of practical problem also, and a kind of new hoist differential planetary reducer is provided.
The purpose of this utility model is achieved in that a kind of hoist differential planetary reducer, comprise casing, input shaft, middle gear pair, final-stage gear pair and output shaft, it is characterized in that: in gear-box, be provided with one-level differential planetary gear train, described input shaft comprises the sun wheel shaft of input gear axle and differential planetary gear train; Described middle gear pair comprises intermediate speed pinion and gear broad in the middle; Described final-stage gear pair comprises final-stage gear axle, final stage gearwheel; The annexation of speed reducer is:
A) planet carrier of input gear axle, differential planetary gear train, final-stage gear axle and output shaft are by the parallel casing that is supported in of bearing, one end of the sun wheel shaft of input gear axle and differential planetary gear train is all stretched out casing and is docked with power source respectively, and output shaft two ends are all stretched out casing and driven respectively reel;
B) intermediate speed pinion is fixedly mounted on by key on the planet carrier of differential planetary gear train, and gear broad in the middle is arranged on final-stage gear axle by key, between them, intermeshes; Final stage gearwheel is arranged on output shaft by key, and final stage gearwheel and final-stage gear axle are intermeshing;
C) the interior external toothing of differential planetary gear train is supported on planet carrier by gear ring frame and bearing, and input gear axle engages with the external tooth in interior external toothing, and planet wheel engages with the internal tooth in sun wheel shaft and interior external toothing simultaneously.
In the utility model: one end of the sun wheel shaft of input gear axle and differential planetary gear train is all stretched out casing and docked with power source by coupling respectively, is furnished with break on coupling.
In the utility model: in described differential planetary gear train, at least contain three equally distributed planet wheels, they by planet wheel shaft and bearings in planet carrier.
The utility model has the advantage of: differential planetary reducer has two input shafts, one is the sun wheel shaft of planetary gear train, one is input gear axle, the input power of two input shafts is by the synthetic common planet carrier running that drives of differential of planetary gear train, again by gear pairs at different levels below, the running of driver output axle, thus drive reel running, hoisting heavy.When a motor wherein breaks down, will be connected immediately input shaft braking of this place's break, now another input shaft runs well, and continue to drive the rotation speed operation of planet carrier with original half by the non-differential motion of planetary mechanism, again by gear pairs at different levels below, driver output axle is also with the rotation speed operation of original half, drive reel to complete slinging work, at this moment because the rotating speed of output shaft becomes original half, output shaft torque does not become, the half when power of known at this moment speed reducer transmission becomes original normal work, namely use the output power of separate unit motor, therefore, use this planetary differential speed reducer, while selecting input motor, only need select the motor that meets normal service rating, do not need must select powerful motor as the two speed reducer parallel-connection structures of dual-motor.
Of the present utility model being also advantageous in that: use this differential planetary reducer, compare the two speed reducer paralleling mechanisms of former dual-motor, select necessary electromotor power little, without with two speed reducer parallel connections, without ratchet and pawl arrangement, without the large-scale coupling of parallel speed-reducing machine output shaft, so there is lower overall weight, take up room little, cost such as greatly reduces at the huge advantage
.especially the bearing capacity of differential planetary gear train is much larger than ratchet and pawl arrangement, and therefore its rate of fault obviously reduces.
Brief description of the drawings
Fig. 1 is the structural representation that traditional hoist is used the two speed reducer parallel-connection structure gear-boxes of dual-motor.
Fig. 2 is the utility model embodiment's structural representation.
In figure, 1 and 1 ', input gear axle; 2, interior external toothing; 3, planet wheel; 4, sun wheel shaft; 5, planet carrier; 6, gear ring frame; 7, intermediate speed pinion; 8 and 8 ', gear broad in the middle; 9 and 9 ', final-stage gear axle; 10 and 10 ', final stage gearwheel; 11 and 11 ', output shaft; 12 and 12 ', casing; 13 and 13 ', break; 14 and 14 ', coupling; 15 and 15 ', motor, 16 and 16 ', reel; 17, coupling; 18 and 18 ', second level gear shaft; 19 and 19 ', first order gearwheel.
Embodiment
Fig. 2 discloses the utility model embodiment's concrete structure without limitation, and below in conjunction with Fig. 2, the utility model will be further described.
As seen from Figure 2, the utility model comprises casing 12, input shaft, middle gear pair, final-stage gear pair and output shaft 11, wherein: in gear-box, be provided with one-level differential planetary gear train, described input shaft comprises the sun wheel shaft 4 of input gear axle 1 and differential planetary gear train; Described middle gear pair comprises intermediate speed pinion 7 and gear broad in the middle 8; Described final-stage gear pair comprises final-stage gear axle 9, final stage gearwheel 10; The annexation of speed reducer is:
Planet carrier 5, final-stage gear axle 9 and the output shaft 11 of input gear axle 1, differential planetary gear train is by the parallel casing 12 that is supported in of bearing, one end of the sun wheel shaft 4 of input gear axle 1 and differential planetary gear train is all stretched out casing and is docked with power source respectively, output shaft 11 two ends all stretch out casing 12 drive respectively reel 16 and reel 16 ';
Intermediate speed pinion 7 is fixedly mounted on by key on the planet carrier 5 of differential planetary gear train, and gear 8 broad in the middle is arranged on final-stage gear axle 9 by key, between intermediate speed pinion 7 and gear broad in the middle 8, intermeshes; Final stage gearwheel 10 is arranged on output shaft 11 by key, and final stage gearwheel 10 is intermeshing with final-stage gear axle 9;
The interior external toothing 2 of differential planetary gear train is supported on planet carrier 5 by gear ring frame 6 and bearing, and input gear axle 1 engages with the external tooth in interior external toothing 2, and planet wheel 3 engages with the internal tooth in sun wheel shaft 4 and the interior external toothing 2 of differential planetary gear train simultaneously.
In the present embodiment: one end of the sun wheel shaft 4 of input gear axle 1 and differential planetary gear train stretch out casing respectively by coupling 14 and coupling 14 ' with motor 15 and motor 15 ' dock, coupling 14 and coupling 14 ' on be all furnished with break 13 and break 13 '.
In the present embodiment: in described differential planetary gear train, at least contain three equally distributed planet wheels 3, they by planet wheel shaft and bearings in planet carrier 5.
In work, when motor 15 and motor 15 ' while all normally work, power is inputted by interior external toothing 2 and the sun wheel shaft 4 of differential planetary gear train respectively, synthetic rotating speed after the comparison intermediate speed pinion 7 of acting in conjunction on planet carrier 5 of making a concerted effort, through the intermediate speed pinion 7 in middle gear pair and final-stage gear axle 9 and the final stage gearwheel 10 in gear broad in the middle 8 and final-stage gear pair, finally by output shaft two ends drive respectively reel 16 and reel 16 '.When motor 15 or motor 15 ' while breaking down, coupling 14 or 14 ' upper corresponding break 13 or 13 ' by its locking, making corresponding input shaft rotating speed is zero, the motor of normal work still works on, synthetic reduce of the rotating speed that makes two input directions inputs on planet carrier 5, rotating speed on intermediate speed pinion 7 also reduces thereupon, causes the synchronization on output shaft to reduce, and therefore can not have influence on the output power sudden change of the motor of normal work.
Claims (3)
1. a hoist differential planetary reducer, comprise casing, input shaft, middle gear pair, final-stage gear pair and output shaft, it is characterized in that: in gear-box, be provided with one-level differential planetary gear train, described input shaft comprises the sun wheel shaft of input gear axle and differential planetary gear train; Described middle gear pair comprises intermediate speed pinion and gear broad in the middle; Described final-stage gear pair comprises final-stage gear axle, final stage gearwheel; The annexation of speed reducer is:
A) planet carrier of input gear axle, differential planetary gear train, final-stage gear axle and output shaft are by the parallel casing that is supported in of bearing, one end of the sun wheel shaft of input gear axle and differential planetary gear train is all stretched out casing and is docked with power source respectively, and output shaft two ends are all stretched out casing and driven respectively reel;
B) intermediate speed pinion is fixedly mounted on by key on the planet carrier of differential planetary gear train, and gear broad in the middle is arranged on final-stage gear axle by key, between them, intermeshes; Final stage gearwheel is arranged on output shaft by key, and final stage gearwheel and final-stage gear axle are intermeshing;
C) the interior external toothing of differential planetary gear train is supported on planet carrier by gear ring frame and bearing, and input gear axle engages with the external tooth in interior external toothing, and planet wheel engages with the internal tooth in sun wheel shaft and interior external toothing simultaneously.
2. hoist differential planetary reducer according to claim 1, is characterized in that: one end of the sun wheel shaft of input gear axle and differential planetary gear train is all stretched out casing and docked with power source by coupling respectively, is all furnished with break on coupling.
3. hoist differential planetary reducer according to claim 1 and 2, is characterized in that: in described differential planetary gear train, at least contain three equally distributed planet wheels, they by planet wheel shaft and bearings in planet carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277164.4U CN203856971U (en) | 2014-05-27 | 2014-05-27 | Differential planet reducer for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277164.4U CN203856971U (en) | 2014-05-27 | 2014-05-27 | Differential planet reducer for crane |
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| Publication Number | Publication Date |
|---|---|
| CN203856971U true CN203856971U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420277164.4U Active CN203856971U (en) | 2014-05-27 | 2014-05-27 | Differential planet reducer for crane |
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| CN (1) | CN203856971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982598A (en) * | 2014-05-27 | 2014-08-13 | 南京高精齿轮集团有限公司 | Differential planetary reducer for crane |
| CN107524773A (en) * | 2017-07-17 | 2017-12-29 | 南京高精齿轮集团有限公司 | The differential rotary reducer of step-by-step movement |
-
2014
- 2014-05-27 CN CN201420277164.4U patent/CN203856971U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982598A (en) * | 2014-05-27 | 2014-08-13 | 南京高精齿轮集团有限公司 | Differential planetary reducer for crane |
| CN107524773A (en) * | 2017-07-17 | 2017-12-29 | 南京高精齿轮集团有限公司 | The differential rotary reducer of step-by-step movement |
| CN107524773B (en) * | 2017-07-17 | 2020-01-14 | 南京高精齿轮集团有限公司 | Stepping differential rotary speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191012 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee after: Nanjing High Precision Gear Group Co., Ltd. Address before: Yuhuatai District of Nanjing City, Jiangsu province 210012 outside the Chinese small especially Jia Ao No. 3 Patentee before: Nanjing High Precision Gear Group Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200509 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |