CN205578634U - Reduction gears of hoist - Google Patents
Reduction gears of hoist Download PDFInfo
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- CN205578634U CN205578634U CN201620314494.5U CN201620314494U CN205578634U CN 205578634 U CN205578634 U CN 205578634U CN 201620314494 U CN201620314494 U CN 201620314494U CN 205578634 U CN205578634 U CN 205578634U
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- gear
- drive shaft
- planetary differential
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Abstract
The utility model relates to a reduction gears of hoist, including vice, the intermediate gear of box, motor, drive shaft, intermediate gear axle, final stage gear shaft, output shaft, intermediate gear, final stage output large gear, its characterized in that, reduction gears contain two sets of planet differential input levels and back level planet differential stage, in planet differential input level, the every planet differential input of group level comprises two motors and a set of planet differential gear train, two motor sun gear drive shaft or drives of ring gear drive shaft through corresponding respectively the sun gear and the ring gear of planet differential gear train, the sun gear drive shaft or the ring gear drive shaft of back level planet differential stage are regarded as respectively to the planet carrier output in two sets of planet differential input levels, back level planet differential stage be a set of planet differential gear train, sun gear in the level planet differential stage of back and ring gear are respectively by the sun gear drive shaft or the drive of ring gear drive shaft of planet differential input level, its planet carrier conduct is grade output torque's drive shaft backward.
Description
Technical field
This utility model relates to a kind of reductor, a kind of three planetary cross-country power mechanism reductors being applied to cast hoist, belongs 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 the highest, 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 the highest, 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 safety and the reliability of work of casting hoist 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 the lowest, meanwhile, the selected power of motor of bi-motor backup is generally large.
Summary of the invention
The purpose of this utility model is: use, for casting hoist at present, the problem that the back-up job pattern of bi-motor exists, it is provided that a kind of safety and the reducing gear of the higher new crane of functional reliability.
The purpose of this utility model is achieved in that the reducing gear of a kind of crane, including casing, motor, drive shaft, 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 drive sun gear and the gear ring of described planetary differential train respectively by corresponding sun gear drive shaft or gear ring drive shaft, and the planet carrier outfan in two groups of planetary differential input stages is respectively as the sun gear drive shaft of rear class planetary differential level or gear ring drive shaft；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 sun gear drive shaft or gear ring drive shaft by planetary differential input stage respectively drives, and its planet carrier is as the drive shaft to rear class output moment of torsion；
Rear class planetary differential level drives intermediate gear shaft to the drive shaft of rear class output moment of torsion 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 output gear wheel.
In this utility model: 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 drive shaft to rear class output moment of torsion, described sun gear is supported in the axis of planetary differential train by bearing floating.
In this utility model: 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 drives, in rear class planetary differential level, the internal tooth of gear ring engages with planetary gear, and the gear ring drive shaft that external tooth is provided by prime drives.
In this utility model: be equipped with brake in the sun gear drive shaft of four motors or gear ring drive shaft of two groups of planetary differential input stages.
The utility model has the advantage of, 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 the biggest, 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 four motors the most normally work, being now the state of normal work, 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 the most any one motor breaks down, 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, the exactly power of three motors that do not break down.
3) if the most any two motors break down, another two motors are 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, the exactly power of two motors that do not break down.
4) if the most any three motors break down, 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, the exactly power of the motor that do not breaks down.
This three planetary differential reduction mechanisms are applied by utility model, 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 this utility model relates to, can also be by controlling the keying of any several motors in four motors, casting hoist reductor can export different rotating speeds, and moment of torsion keeps normal operation torque 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 this utility model embodiment.
Fig. 2 is the basic structure schematic diagram of one group of planetary differential input stage embodiment.
In figure: 1, gear ring drive shaft, 2, sun gear 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 this utility model embodiment of accompanying drawing, the utility model will be further described below in conjunction with the accompanying drawings.
As seen from Figure 1, this utility model includes casing 8, motor, drive shaft, 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 group 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 by corresponding sun gear drive shaft 2(correspondence motor 9) or gear ring drive shaft 1(correspondence motor 10) drive sun gear and the gear ring 5 of described planetary differential train, planet carrier 7 outfan is sun gear drive shaft 2 or the gear ring drive shaft 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 sun gear drive shaft 2(of planetary differential input stage respectively with gear ring) or gear ring drive shaft 1(corresponding with planetary differential input stage B) drive, the planet carrier 7 of rear class planetary differential level C as to rear class output moment of torsion drive shaft.
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, the most only by Fig. 2 as a example by 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 it is supported in the axis of planetary differential train as to sun gear drive shaft 2 or gear ring drive shaft 1, described sun gear and the sun gear drive shaft 2 of rear class output moment of torsion by bearing floating by planet carrier 7.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 drive shaft 1 that external tooth is provided by motor drives, in planet Differential Driving level, the internal tooth of gear ring 5 engages with planetary gear 3, and the gear ring drive shaft 1 that external tooth is provided by prime drives.
In the present embodiment: on four motor driving shafts of two groups of planetary differential input stages, be equipped with brake 18.
Claims (4)
1. the reducing gear of a crane, including casing, motor, drive shaft, 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 drive sun gear and the gear ring of described planetary differential train respectively by corresponding sun gear drive shaft or gear ring drive shaft, and the planet carrier outfan in two groups of planetary differential input stages is respectively as the sun gear drive shaft of rear class planetary differential level or gear ring drive shaft；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 sun gear drive shaft or gear ring drive shaft by planetary differential input stage respectively drives, and its planet carrier is as the drive shaft to rear class output moment of torsion；
Rear class planetary differential level drives intermediate gear shaft to the drive shaft of rear class output moment of torsion 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 output gear wheel.
The reducing gear of crane the most 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 drive shaft to rear class output moment of torsion, described sun gear is supported in the axis of planetary differential train by bearing floating.
The reducing gear of crane the most 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 drives, in rear class planetary differential level, the internal tooth of gear ring engages with planetary gear, and the gear ring drive shaft that external tooth is provided by prime drives.
The reducing gear of crane the most according to claim 3, it is characterised in that: in the sun gear drive shaft of four motors or gear ring drive shaft of two groups of planetary differential input stages, it is equipped with brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620314494.5U CN205578634U (en) | 2016-04-15 | 2016-04-15 | Reduction gears of hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620314494.5U CN205578634U (en) | 2016-04-15 | 2016-04-15 | Reduction gears of hoist |
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| Publication Number | Publication Date |
|---|---|
| CN205578634U true CN205578634U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620314494.5U Active CN205578634U (en) | 2016-04-15 | 2016-04-15 | Reduction gears of hoist |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805237A (en) * | 2016-04-15 | 2016-07-27 | 南京高精齿轮集团有限公司 | Retarding mechanism of crane |
-
2016
- 2016-04-15 CN CN201620314494.5U patent/CN205578634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805237A (en) * | 2016-04-15 | 2016-07-27 | 南京高精齿轮集团有限公司 | Retarding mechanism of crane |
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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: 20191016 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 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. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200518 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: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |