CN2668926Y - Planetary differential variable-speed gear for tower crane - Google Patents
Planetary differential variable-speed gear for tower crane Download PDFInfo
- Publication number
- CN2668926Y CN2668926Y CNU2003201142416U CN200320114241U CN2668926Y CN 2668926 Y CN2668926 Y CN 2668926Y CN U2003201142416 U CNU2003201142416 U CN U2003201142416U CN 200320114241 U CN200320114241 U CN 200320114241U CN 2668926 Y CN2668926 Y CN 2668926Y
- Authority
- CN
- China
- Prior art keywords
- gear
- ring gear
- planet
- planetary differential
- sun
- 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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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The utility model provides a planetary differential variable-speed gear for tower crane, comprising two sets of parallel planetary transmissions and two sets of oil lubrication multichip disc brakes. A sun gear shaft is the input end, and the planet wheel is meshed with the sun gear shaft and the ring gear simultaneously. The external gear of the planet carrier is engaged with the internal ring gear, and the planet gear is meshed with the sun gear and the internal ring gear simultaneously. The planet carrier is an output end. The sun gears of the two sets of planetary transmissions are dual, and the two sets of oil lubrication multichip disc brakes respectively act on the top circle of the internal ring gear. The new style planetary differential variable-speed gear for tower crane, can be used to enlarge the speed range in the hoisting mechanism, and the utility model makes up for the defects in the above existing transmission technology, solves the problems of large volume, large energy consumption, large noise, low efficiency, and high cost effectively.
Description
Affiliated technical field
The utility model relates to a kind of speed change gear, refers in particular to a kind of tower machine planetary differential speed change gear.
Technical field
The main speed regulating method of lifting mechanism of tower crane has motor pole-changing windings, mechanical gear shift speed change, frequency conversion stepless change and dual-motor energy consumption speed change at present, and these speed changes are used in reality and existed following deficiency:
1, use the squirrel-cage motor pole-changing windings, the shortcoming of this method is that the electromechanical shock electric current is big, and motor connects the low easy burn-out of electric water holdup when large number of poles, and motor pole number changes the limited lifting mechanism that makes and do not reach the NBS requirement with regard to bit rate slowly, and using scope is limited.
2, adopt the coiling electric motor pole-changing windings, the shortcoming of this method is that motor variation number of poles is few, and when using in requiring the higher large-tonnage lifting mechanism of maximum lifting velocity, speed stage is few, and the power of motor that needs is big.
3, adopt traditional mechanical speed change, the shortcoming of this method is a complex structure, and is bulky, and gear ordinary transmission efficient is low, noise is big.
4, adopt dual-motor energy consumption speed change, the shortcoming of this method is that electric motor power is big, and the cost height wastes energy.
5, adopt the frequency conversion stepless change, the shortcoming of this method is under the condition that does not have mechanical speed change to be used, and the power of motor that needs is big, and the apolegamy of frequency variator, brake unit, resistance is corresponding just big, the cost height.
The model utility content
Main purpose of the present utility model just is: a kind of novel planetary differential speed change gear is provided, be used in and enlarge velocity range in the lifting mechanism, to remedy the defective that exists in the above-mentioned existing transmission technology, solve the problem that volume is big, energy consumption is big, noise is big, efficient is low, cost is high effectively.
In order to achieve the above object, the solution that the utility model proposes is: a kind of tower machine planetary differential speed change gear, it comprises two groups of Gear Planet Transmission arranged side by side and two groups of oil lubrication multiple disc brakes, and sun wheel shaft is an input end, and planet wheel is meshed with sun gear and ring gear simultaneously.Planet carrier has external tooth and engages with ring gear.Planet wheel is meshed with sun gear and ring gear simultaneously, and planet carrier is an output terminal; The sun gear of two groups of Gear Planet Transmission adopts duplex; Two groups of oil lubrication multiple disc brakes act on respectively on the cylindrical of ring gear.
Description of drawings
Fig. 1 is a planetary differential speed change gear structural profile schematic representation;
Fig. 2 is a planetary differential speed change gear working principle schematic representation.
Marginal data
1 sun gear, 2 internal gears
3 armature, 4 springs
5 planet wheels, 6 planet carriers
7 sun gears, 8 planet wheels
9 internal gears, 10 planet carriers
11 breaks, 12 breaks
Embodiment
Below in conjunction with embodiment and accompanying drawing structure of the present utility model is elaborated.
Referring to Fig. 1, Fig. 2 as seen, the planetary differential speed change gear is made up of two groups of Gear Planet Transmission and two groups of multiple disc brake two-part.Sun wheel shaft is an input end, and planet wheel 5 is meshed with sun gear 1 and ring gear 2 simultaneously.Planet carrier 6 has external tooth and engages with ring gear 9.Planet wheel 8 is meshed with sun gear 7 and ring gear 9 simultaneously, and planet carrier 10 is an output terminal.Have external splines on the cylindrical of ring gear 2 and ring gear 9, the interior sheet of multi-disc break has internal spline, and interior external splines is halved together, and interior sheet can move vertically.Have external tooth on the outer plate of multi-disc break, link, radially do not rotate, can move vertically with fixed block.The multi-disc break is made up of the device of interior outside friction disc, armature 3 and spring 4 and generation electromagnetic force or fluid power.Input end adopts singly-bound or spline shaft extension to link to each other with shaft coupling or adopts inner splined hole directly to insert with motor shaft and links to each other.Output terminal planet carrier 10 adopts splined, and input end turns to identical with output terminal.
The purpose of this utility model is achieved in that in use, and the planetary differential speed change gear is by sun gear 1,7, planet wheel 5,8, and ring gear 2,9, planet carrier 6,10 and break 11,12 are formed working portions.With the motor is that power inputs to motion the input shaft that connects with sun gear.The output of first kind of rotating speed: break 11 is a braking state, and break 12 is releasing state, sun gear 1 and planet wheel 5 engagements, and this moment, ring gear 2 was fixing, and planet wheel 5 encloses sun gear 1 revolution and drives planet carrier 6 and passes motion to ring gear 9.Planet wheel 8 is meshed with sun gear 7 and ring gear 9 simultaneously, and under the effect, planet wheel 8 drives a kind of differential rotating speed of planet carrier 10 outputs in sun gear 7 and ring gear 9.The output of second kind of speed: break 12 is a braking state, break 11 is releasing state, sun gear 1 and planet wheel 5 engagements, this moment, planet carrier 6 was fixed because of ring gear 9, ring gear 2 idle running, sun gear 7 is meshed with planet wheel 8, and this moment is fixing because of ring gear 9, and planet wheel 8 drives second kind of rotating speed of planet carrier 10 outputs.At this moment, can select different speed stages according to the requirement of load and motion state.The multi-disc break produces braking force by spring 4 pushing armature 3 and realizes normally closed braking state, overcomes spring pressure by electromagnetic force or fluid power, produces the gap between the outer plate in making, and realizes the releasing state of break.
In sum, this novel planetary differential speed change gear can be used for enlarging velocity range in lifting mechanism, to remedy the defective that exists in the above-mentioned existing transmission technology, solve the problem that volume is big, energy consumption is big, noise is big, efficient is low, cost is high effectively.
Claims (4)
1, a kind of tower machine planetary differential speed change gear, it is characterized in that: it comprises two groups of Gear Planet Transmission arranged side by side and two groups of oil lubrication multiple disc brakes, and sun wheel shaft is an input end, planet wheel (5) is meshed with sun gear (1) and ring gear (2) simultaneously; Planet carrier (6) has external tooth and engages with ring gear (9); Planet wheel (8) is meshed with sun gear (7) and ring gear (9) simultaneously, and planet carrier (10) is an output terminal; Duplex is adopted in the sun gear of two groups of Gear Planet Transmission (1), (7); Two groups of oil lubrication multiple disc brakes act on respectively on the cylindrical of ring gear (2), (9).
2, tower machine planetary differential speed change gear according to claim 1, it is characterized in that: described oil lubrication multiple disc brake adopts Normally closed type, device by interior outside friction disc, armature (3) and spring (4) and generation electromagnetic force or fluid power is formed, utilize the spring force braking, utilize electromagnetic force or fluid power to discharge.
3, tower machine planetary differential speed change gear according to claim 1 is characterized in that: described input end adopts singly-bound or spline shaft extension to link to each other with shaft coupling or adopts inner splined hole directly to insert with motor shaft and links to each other; Planet carrier (10) is an output terminal, and it adopts splined, and input end turns to identical with output terminal.
4, tower machine planetary differential speed change gear according to claim 2, it is characterized in that: the interior sheet of described multi-disc break has internal spline, have external splines on the cylindrical of ring gear (2) and ring gear (9), interior external splines is halved together, and interior sheet can move vertically; Have external tooth on the outer plate of multi-disc break, link, radially do not rotate, can move vertically with fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201142416U CN2668926Y (en) | 2003-11-28 | 2003-11-28 | Planetary differential variable-speed gear for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201142416U CN2668926Y (en) | 2003-11-28 | 2003-11-28 | Planetary differential variable-speed gear for tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2668926Y true CN2668926Y (en) | 2005-01-05 |
Family
ID=34438900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201142416U Expired - Fee Related CN2668926Y (en) | 2003-11-28 | 2003-11-28 | Planetary differential variable-speed gear for tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2668926Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644265A (en) * | 2013-12-09 | 2014-03-19 | 中联重科股份有限公司 | Engineering machine and planetary reduction mechanism thereof |
| CN111442069A (en) * | 2020-05-15 | 2020-07-24 | 索特传动设备有限公司 | Speed reducer and rotary drilling rig |
| US20240117878A1 (en) * | 2022-10-05 | 2024-04-11 | Volvo Construction Equipment Ab | Dual planetary gear transmission controlled by combined parking and service brakes |
-
2003
- 2003-11-28 CN CNU2003201142416U patent/CN2668926Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644265A (en) * | 2013-12-09 | 2014-03-19 | 中联重科股份有限公司 | Engineering machine and planetary reduction mechanism thereof |
| CN111442069A (en) * | 2020-05-15 | 2020-07-24 | 索特传动设备有限公司 | Speed reducer and rotary drilling rig |
| US20240117878A1 (en) * | 2022-10-05 | 2024-04-11 | Volvo Construction Equipment Ab | Dual planetary gear transmission controlled by combined parking and service brakes |
| US11994206B2 (en) * | 2022-10-05 | 2024-05-28 | Volvo Construction Equipment Ab | Dual planetary gear transmission controlled by combined parking and service brakes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050105 Termination date: 20091228 |