CN105805237A - Retarding mechanism of crane - Google Patents
Retarding mechanism of crane Download PDFInfo
- Publication number
- CN105805237A CN105805237A CN201610233143.6A CN201610233143A CN105805237A CN 105805237 A CN105805237 A CN 105805237A CN 201610233143 A CN201610233143 A CN 201610233143A CN 105805237 A CN105805237 A CN 105805237A
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- China
- Prior art keywords
- gear
- planetary differential
- stage
- gear ring
- drive shaft
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- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention relates to a retarding mechanism of a crane. The retarding mechanism comprises a box, motors, drive shafts, an intermediate gear shaft, a final stage gear shaft, an output shaft, an intermediate gear pair, an intermediate gear and a final stage output large gear, and is characterized in that the retarding mechanism has two planetary differential drive input stages and a later stage gear planetary differential drive stage; in the planetary differential drive input stages, each planetary differential drive input stage comprises two motors and one planetary differential drive gear train; the two motors respectively drive a sun gear and a gear ring in the planetary differential drive gear train through a corresponding sun gear drive shaft or a corresponding gear ring drive shaft; planet carrier output ends in the two planetary differential drive input stages are respectively adopted as the sun gear drive shaft or the gear ring drive shaft of the later stage gear planetary differential drive stage; the later stage gear planetary differential drive stage is a planetary differential drive gear train; the sun gear and the gear ring in the later stage gear planetary differential drive stage are respectively driven by the sun gear drive shaft or the gear ring drive shaft in the corresponding planetary differential drive input stage; and a planet carrier of the later stage gear planetary differential drive stage is adopted as a drive shaft for outputting torque to the later stage.
Description
Technical field
The present invention relates to a kind of reductor, especially a kind of three planetary cross-country power mechanism reductors being applied to casting hoist, belong to mechanical field.
Background technology
Crane reductor is the core component in crane system, carry slows down increases the pivotal role of square, and casting hoist is that a kind of safety reliability requirement is higher, the mechanical system that reliability requirement is significantly high, electric part particularly motor is to be easiest to out of order weak link, motor is out of order, whole system runs out of steam source, system will shut down, the high-temperature molten liquid of whole tank may solidify, serious accident, or reduction temperature, affect poured weights, therefore, for the casting hoist that safety reliability requirement is significantly high, the general back-up job pattern all configuring the employing bi-motor that supplies power with double circuit, break down if so had in a motor job, can ensure that another motor carries out replacing and continued drive system work.
Occupation mode by this bi-motor backup of supplying power with double circuit, although the safety of casting hoist and the reliability of work can be added, but in system work, a motor can only be allowed to be out of order, when a motor breaks down, the operating pressure of operator increases severely, worrying the reliability of backup motor, therefore, the safety coefficient of this mode of operation is still very low, meanwhile, the selected power of motor of bi-motor backup is generally large.
Summary of the invention
It is an object of the invention to: adopt the back-up job pattern Problems existing of bi-motor at present casting hoist, it is provided that the reducing gear of a kind of safety and the higher new crane of functional reliability.
The object of the present invention is achieved like this: the reducing gear of a kind of crane, including casing, motor, driving axle, intermediate gear shaft, final-stage gear axle, output shaft, middle gear pair, idler gear, final stage output gear wheel, it is characterized in that, reducing gear contains two groups of planetary differential input stages and rear class planetary differential level；In planet differential input level, often group planetary differential input stage is made up of two motors and one group of planetary differential train, two motors are respectively through the sun gear of planetary differential train described in corresponding sun wheel drive shaft or gear ring drive shaft and gear ring, and the planet carrier outfan in two groups of planetary differential input stages drives axle respectively as sun wheel drive shaft or the gear ring of rear class planetary differential level；Described rear class planetary differential level is one group of planetary differential train, and sun gear in rear class planetary differential level and gear ring are respectively by the sun wheel drive shaft of planetary differential input stage or gear ring drive shaft, and its planet carrier is as the driving axle exporting moment of torsion to rear class；
The driving axle that rear class planetary differential level exports moment of torsion to rear class drives intermediate gear shaft by middle gear pair, and intermediate gear shaft passes through intermediate gear drives final-stage gear axle, and final-stage gear axle drives output shaft by exporting gear wheel.
In the present invention: in the planetary differential train of planet differential input level and rear class planetary differential level, described gear ring is equipped with pair of supporting, wherein, outlet side bracing frame is by bearings in casing, and input side bracing frame passes through bearings on the input side of planet carrier；The input side of described planet carrier passes through bearings in casing, outlet side passes through bearings in the outlet side bracing frame of gear ring, and by planet carrier as the driving axle exporting moment of torsion to rear class, described sun gear is supported in the axis of planetary differential train by bearing floating.
In the present invention: described gear ring is all containing interior external tooth, in planet differential input level, the internal tooth of gear ring engages with planetary gear, the gear ring drive shaft that external tooth is provided by motor, in rear class planetary differential level, the internal tooth of gear ring engages with planetary gear, the gear ring drive shaft that external tooth is provided by prime.
In the present invention: the sun wheel drive shaft of four motors or gear ring two groups of planetary differential input stages drive and be equipped with brake on axle.
It is an advantage of the current invention that, slowing down due to the prime of reducing gear is three planetary differential reduction levels (two planetary differential input stages arranged side by side and rear class planetary differential levels), not only compact conformation, the speed ratio of input and output is also big, especially two planetary differential input stages arranged side by side have employed four motors and are driven, and its duty is listed as follows:
Table 1 motor and the output of reducing gear, output speed and output moment of torsion
As can be seen from Table 1,
1) when the equal normal operation of four motors, being now the state of normal operation, if now total power input (i.e. four power of motor sums) is P, reducing gear output speed is N, and reducing gear output moment of torsion is T.
2) if any one motor breaks down in the course of the work, another three motors are normal, then the reducing gear power shaft of this faulty motor connection is braked by brake, the other three power shaft runs well, motion through internal three planetary differential trains synthesizes, and makes reducing gear output speed become original 3/4, and output moment of torsion is constant, reducing gear transmission power becomes original 3/4, is exactly the power of three motors that do not break down.
3) if any two motors break down in the course of the work, two other platform motor is normal, then the reducing gear power shaft of these two faulty motor connections is braked by brake, another two power shaft runs well, motion through internal three planetary differential trains synthesizes, and makes reducing gear output speed become original 1/2, and output moment of torsion is constant, reducing gear transmission power becomes original 1/2, is exactly the power of two motors that do not break down.
4) if any three motors break down in the course of the work, another motor is normal, then the reductor power shaft of these three faulty motor connections is braked by brake, another power shaft runs well, motion through internal three planetary differential trains synthesizes, and makes reducing gear output speed become original 1/4, and output moment of torsion is constant, reducing gear transmission power becomes original 1/4, is exactly the power of the motor that do not break down.
This three planetary differential reduction mechanisms are applied by inventing, in four motors any one, two or three motors are when breaking down, internal three planetary cross-country power mechanisms can carry out differential motion synthesis, make what remaining motor can also maintain system normally to export moment of torsion, and now motor will not overload, which greatly increases the safety of crane, reliability.
The reducing gear that the present invention relates to, can also pass through to control the keying of any several motors in four motors, casting hoist reductor can export different rotating speeds, and moment of torsion keeps normal operation moment of torsion constant, so this three planetary differential reduction mechanism also has speed-regulating function concurrently.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the basic structure schematic diagram of one group of planetary differential input stage embodiment.
In figure: 1, gear ring drives axle, 2, sun wheel drive shaft, 3, planetary gear, 4, input side bracing frame, 5, gear ring, 6, outlet side bracing frame, 7, planet carrier, 8, casing, 9, motor, 10, motor, 11, middle gear pair, 12, intermediate gear shaft, 13, idler gear, 14, final-stage gear axle, 15, final stage output gear wheel, 16, output shaft, 17, reel, 18, brake.
In figure, A and B is planetary differential input stage, C rear class planetary differential level.
Detailed description of the invention
The nonrestrictive concrete structure disclosing the embodiment of the present invention of accompanying drawing, below in conjunction with accompanying drawing, the invention will be further described.
As seen from Figure 1, the present invention includes casing 8, motor, drive axle, intermediate gear shaft 12, final-stage gear axle 14, output shaft 16, middle gear pair 11, idler gear 13, final stage output gear wheel 15, wherein, reducing gear contains A and B organizes planetary differential input stage and rear class planetary differential level C, in planet differential input level A and B, often group planetary differential input stage is by motor 9, motor 10 and one group of planetary differential train composition, two motors are respectively through corresponding sun wheel drive shaft 2(correspondence motor 9) or gear ring drive axle 1(correspondence motor 10) drive sun gear and the gear ring 5 of described planetary differential train, planet carrier 7 outfan is sun wheel drive shaft 2 or the gear ring driving axle 1 of rear class planetary differential level C；Described rear class planetary differential level C is one group of planetary differential train, sun gear in rear class planetary differential level C is corresponding with planetary differential input stage A by the sun wheel drive shaft 2(of planetary differential input stage respectively with gear ring) or gear ring drive axle 1(corresponding with planetary differential input stage B) driving, the planet carrier 7 of rear class planetary differential level C as to rear class output moment of torsion driving axle.
The planet carrier 7 of rear class planetary differential level C drives intermediate gear shaft 12 by middle gear pair 11, intermediate gear shaft 12 drives final-stage gear axle 14 by idler gear 13, final-stage gear axle 14, by exporting the output shaft 16 that gear wheel 15 drives two ends to export, output shaft is furnished with reel 17.
In the planetary differential train of planet differential input level A, planetary differential input stage B and rear class planetary differential level C, the structural principle of their planetary differential train is all identical, below only by Fig. 2 for planetary differential input stage A, disclose the architectural feature of planetary differential train.
From Figure 2 it can be seen that described gear ring 5 is equipped with pair of supporting, wherein, outlet side bracing frame 6 is by bearings in casing 8, and input side bracing frame 4 passes through bearings on the input side of planet carrier 7.The input side of planet carrier 7 passes through bearings in casing 8, the outlet side of planet carrier 7 passes through bearings in the outlet side bracing frame 6 of gear ring 5, and being driven axle 1 by planet carrier 7 as the sun wheel drive shaft 2 or gear ring exporting moment of torsion to rear class, described sun gear and sun wheel drive shaft 2 are supported in the axis of planetary differential train by bearing floating.Described gear ring 5 is all containing interior external tooth, and in planet differential input level, the internal tooth of gear ring 5 engages with planetary gear 3, the gear ring that external tooth is provided by motor drives axle 1 to drive, in planet Differential Driving level, the internal tooth of gear ring 5 engages with planetary gear 3, and the gear ring that external tooth is provided by prime drives axle 1 to drive.
In the present embodiment: four motor driving shafts of two groups of planetary differential input stages are equipped with brake 18.
Claims (4)
1. the reducing gear of a crane, including casing, motor, driving axle, intermediate gear shaft, final-stage gear axle, output shaft, middle gear pair, idler gear, final stage output gear wheel, it is characterized in that, reducing gear contains two groups of planetary differential input stages and rear class planetary differential level；In planet differential input level, often group planetary differential input stage is made up of two motors and one group of planetary differential train, two motors are respectively through the sun gear of planetary differential train described in corresponding sun wheel drive shaft or gear ring drive shaft and gear ring, and the planet carrier outfan in two groups of planetary differential input stages drives axle respectively as sun wheel drive shaft or the gear ring of rear class planetary differential level；Described rear class planetary differential level is one group of planetary differential train, and sun gear in rear class planetary differential level and gear ring are respectively by the sun wheel drive shaft of planetary differential input stage or gear ring drive shaft, and its planet carrier is as the driving axle exporting moment of torsion to rear class；
The driving axle that rear class planetary differential level exports moment of torsion to rear class drives intermediate gear shaft by middle gear pair, and intermediate gear shaft passes through intermediate gear drives final-stage gear axle, and final-stage gear axle drives output shaft by exporting gear wheel.
2. the reducing gear of crane according to claim 1, it is characterized in that: in the planetary differential train of planet differential input level and rear class planetary differential level, described gear ring is equipped with pair of supporting, wherein, outlet side bracing frame is by bearings in casing, and input side bracing frame passes through bearings on the input side of planet carrier；The input side of described planet carrier passes through bearings in casing, outlet side passes through bearings in the outlet side bracing frame of gear ring, and by planet carrier as the driving axle exporting moment of torsion to rear class, described sun gear is supported in the axis of planetary differential train by bearing floating.
3. the reducing gear of crane according to claim 1 and 2, it is characterized in that: described gear ring is all containing interior external tooth, in planet differential input level, the internal tooth of gear ring engages with planetary gear, the gear ring drive shaft that external tooth is provided by motor, in rear class planetary differential level, the internal tooth of gear ring engages with planetary gear, the gear ring drive shaft that external tooth is provided by prime.
4. the reducing gear of crane according to claim 3, it is characterised in that: the sun wheel drive shaft of four motors or gear ring two groups of planetary differential input stages drive and are equipped with brake on axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233143.6A CN105805237A (en) | 2016-04-15 | 2016-04-15 | Retarding mechanism of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233143.6A CN105805237A (en) | 2016-04-15 | 2016-04-15 | Retarding mechanism of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105805237A true CN105805237A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610233143.6A Pending CN105805237A (en) | 2016-04-15 | 2016-04-15 | Retarding mechanism of crane |
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| Country | Link |
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| CN (1) | CN105805237A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854680A (en) * | 2019-01-18 | 2019-06-07 | 天津工业大学 | A kind of dual output herringbone curved tooth differential gearing system of adjustable speed |
| CN111120582A (en) * | 2020-02-25 | 2020-05-08 | 华兴智控(北京)能源有限公司 | Multi-motor-driven parallel shaft gear resultant force reduction gearbox for petroleum drilling |
| CN111410132A (en) * | 2020-04-24 | 2020-07-14 | 江苏国茂减速机股份有限公司 | Differential gear box for crane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2016288C1 (en) * | 1991-08-27 | 1994-07-15 | Евгений Петрович Абрамцев | Drive |
| CN201517589U (en) * | 2009-10-26 | 2010-06-30 | 南京星能传动机械有限责任公司 | Crane differential planet gear case |
| CN101761611A (en) * | 2008-12-12 | 2010-06-30 | 天津市正平机械新技术有限公司 | Reducer |
| CN102398869A (en) * | 2011-07-12 | 2012-04-04 | 太原重工股份有限公司 | Lifting system of crane |
| CN203585256U (en) * | 2013-11-25 | 2014-05-07 | 潍坊新奇机电工程有限公司 | Planetary differential speed reducer for crane |
| 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 |
| CN205578634U (en) * | 2016-04-15 | 2016-09-14 | 南京高精齿轮集团有限公司 | Reduction gears of hoist |
-
2016
- 2016-04-15 CN CN201610233143.6A patent/CN105805237A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2016288C1 (en) * | 1991-08-27 | 1994-07-15 | Евгений Петрович Абрамцев | Drive |
| CN101761611A (en) * | 2008-12-12 | 2010-06-30 | 天津市正平机械新技术有限公司 | Reducer |
| CN201517589U (en) * | 2009-10-26 | 2010-06-30 | 南京星能传动机械有限责任公司 | Crane differential planet gear case |
| CN102398869A (en) * | 2011-07-12 | 2012-04-04 | 太原重工股份有限公司 | Lifting system of crane |
| CN203585256U (en) * | 2013-11-25 | 2014-05-07 | 潍坊新奇机电工程有限公司 | Planetary differential speed reducer for crane |
| 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 |
| CN205578634U (en) * | 2016-04-15 | 2016-09-14 | 南京高精齿轮集团有限公司 | Reduction gears of hoist |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854680A (en) * | 2019-01-18 | 2019-06-07 | 天津工业大学 | A kind of dual output herringbone curved tooth differential gearing system of adjustable speed |
| CN111120582A (en) * | 2020-02-25 | 2020-05-08 | 华兴智控(北京)能源有限公司 | Multi-motor-driven parallel shaft gear resultant force reduction gearbox for petroleum drilling |
| CN111410132A (en) * | 2020-04-24 | 2020-07-14 | 江苏国茂减速机股份有限公司 | Differential gear box for crane |
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Application publication date: 20160727 |
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