CN107202139A - One kind becomes prompt drop square transfer case - Google Patents
One kind becomes prompt drop square transfer case Download PDFInfo
- Publication number
- CN107202139A CN107202139A CN201710418836.7A CN201710418836A CN107202139A CN 107202139 A CN107202139 A CN 107202139A CN 201710418836 A CN201710418836 A CN 201710418836A CN 107202139 A CN107202139 A CN 107202139A
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- China
- Prior art keywords
- gear
- power output
- output shaft
- jackshaft
- shaft
- 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.)
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Links
- 230000008859 change Effects 0.000 claims abstract description 24
- 230000007704 transition Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 241000233855 Orchidaceae Species 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000008450 motivation Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/065—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with a plurality of driving or driven shafts
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structure Of Transmissions (AREA)
- Gear Transmission (AREA)
Abstract
Become prompt drop square transfer case the invention discloses one kind, including casing, power input shaft, gear drive, the first jackshaft and power output shaft are provided with the casing, housing is stretched out in one end of the power input shaft, the gear drive is provided with two power output shafts, respectively the first power output shaft and the second power output shaft, first power output shaft and the second power output shaft have one end to stretch out casing.The present invention is nervous for marine drilling platform space, the characteristics of load is limited, a kind of change prompt drop square transfer case that gearbox, drop square case, transfer case, the case that just reversing gear are combined into an entirety is provided, the change prompt drop square auxiliary box structure is compact, driving-chain is short, lightweight, cost is low.
Description
Technical field
The present invention relates to technical field of mechanical transmission, and in particular to a kind of change prompt drop square point applied on ocean workover rig
Dynamic case.
Background technology
The running part of workover rig is general using diesel engine or motor as power, through gearbox, transfer case, then passes through main tooth
Roller box or chain-wheel box drive winch operation；It can also be driven simultaneously by transfer case by dropping square case or right angle gear box, positive reverse gear case
Rotating disk operation.Because existing transfer case can not realize speed change and positive and negative rotating function, when driving winch and rotating disk operation, also
Separately match somebody with somebody gearbox and positive reverse gear case.Marine drilling platform is limited using space and bearing capacity, and involves great expense, so to sea
The floor space and main screw lift of foreign workover rig are proposed limitation and required.
The content of the invention
In order to solve the above technical problems, the present invention provides nervous for marine drilling platform space, the characteristics of load is limited,
A kind of change prompt drop square transfer case that gearbox, drop square case, transfer case, the case that just reversing gear are combined into an entirety, the speed change are provided
Drop square auxiliary box structure is compact, driving-chain is short, lightweight, cost is low.
The technical solution adopted in the present invention is：
One kind becomes in prompt drop square transfer case, including casing, the casing provided with power input shaft, gear drive, the
Housing is stretched out in one jackshaft and power output shaft, one end of the power input shaft, and the gear drive is provided with two
Power output shaft, respectively the first power output shaft and the second power output shaft, first power output shaft and the second power
Output shaft has one end to stretch out casing；
The gear drive includes first gear group, second gear group, bevel gear and the 3rd gear train；Described first
Gear train includes the first duplicate gear, the second duplicate gear, and it is defeated that first duplicate gear, the second duplicate gear are arranged on power
Enter on axle, the clutch tooth set for speed change is provided between first duplicate gear and the second duplicate gear；The second gear
Group includes the first double bevel wheel, the second double bevel wheel, the first travelling gear, the second travelling gear, the first duplex cone
Gear, the second double bevel wheel, the first travelling gear, the second travelling gear are installed on the first power output shaft, and described
One double bevel wheel and the second double bevel wheel are separately mounted to the inner side of the first travelling gear and the second travelling gear, described
The clutch gear for commutation is additionally provided between first double bevel wheel and the second double bevel wheel；First duplicate gear with
First travelling gear is meshed, and the second duplicate gear is meshed with the second travelling gear；First double bevel wheel and second
Double bevel wheel can be meshed with bevel gear, and the bevel gear is arranged on the first jackshaft, and first jackshaft passes through
3rd gear train is connected with the second power output shaft.
Preferably, the 3rd gear train includes the 3rd travelling gear, transition gear, the second jackshaft and the 4th transmission
Gear；3rd travelling gear is arranged on the first jackshaft, and the transition gear is arranged on the second jackshaft, and described the
Four travelling gears are arranged in the hollow shaft outside the second power output shaft；3rd travelling gear and the 4th travelling gear are equal
It is meshed with transition gear.
Preferably, first jackshaft, the second jackshaft and the second power output shaft are parallel.
Preferably, the change prompt drop square transfer case also includes pneumatic clutch and adpting flange, the pneumatic clutch
It is connected with the second power output shaft, the adpting flange is connected with hollow shaft.
Preferably, the power input shaft and the first power output shaft are arranged in parallel, second power output shaft with
Power input shaft and the first power output shaft spatial vertical arrangement, the power input shaft, the first power output shaft are same flat
In face, and power input shaft, the first power output shaft and the second power output shaft spatial vertical.
Preferably, being also equipped with the first joystick for realizing speed change on the casing and for realizing commutation
Second joystick, first joystick is connected with clutch tooth set, and the second joystick is connected with clutch gear.
The present invention has the advantages that compared with prior art：
1st, change prompt drop square transfer case of the present invention by gearbox, drop square case, transfer case, the case that just reversing gear be combined into one it is whole
Body, gear shift mechanism is controlled by the first joystick, come realize the first power output shaft have two kinds of different rotating speeds and
Torque；Deflecting gearshift is controlled by the first joystick, to realize the rotating of the second power output shaft；Pass through bevel gear
And transition gear, come realize the second power output shaft center decline and with the first power output shaft spatial vertical；By controlling gas
The separation and adhesive of dynamic clutch, come realize the first power output shaft work independently or the first power output shaft and the first power it is defeated
Shaft works simultaneously.
2nd, change prompt drop square auxiliary box structure of the present invention is compact, driving-chain is short, lightweight, cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of change prompt drop square transfer case of the present invention；
Fig. 2 is the structural representation of change prompt drop square transfer case of the present invention；
Fig. 3 is the side view of change prompt drop square transfer case of the present invention；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figures 1 to 3, the embodiment of the present invention provides a kind of change prompt drop square transfer case, including casing 100, the casing
Power input shaft 1, gear drive, the first jackshaft 11, the second jackshaft 15 and power output shaft (this reality are provided with 100
It is respectively the first power output shaft 7 and the second power output shaft 17 to apply power output shaft described in example), first power output
The power output shaft 17 of axle 7 and second has one end to stretch out casing 100.
Referring to shown in Fig. 1 to 2, the gear drive includes first gear group, second gear group, bevel gear and the 3rd
Gear train；The first gear group includes the first duplicate gear 2, the second duplicate gear 4, first duplicate gear, 2 and the
Two duplicate gears 4 are arranged on power input shaft 1, and clutch tooth is provided between the duplicate gear 4 of the first duplicate gear 2 and second
Set 3；The second gear group includes the first double bevel wheel 12, the second double bevel wheel 6, the first travelling gear 13, second and passed
Moving gear 5, first double bevel wheel 12, the second double bevel wheel 6, the first travelling gear 13, the second travelling gear 5 are pacified
On the first power output shaft 7, the double bevel wheel 6 of the first double bevel wheel 12 and second is separately mounted to the first transmission
Be additionally provided between the inner side of the travelling gear 5 of gear 13 and second, the double bevel wheel 6 of the first double bevel wheel 12 and second from
Close tooth set 8；First duplicate gear 2 is meshed with the first travelling gear 13, the second duplicate gear 4 and the second travelling gear 5
It is meshed；First double bevel wheel 12 can be meshed with the second double bevel wheel 6 with bevel gear 9, and the bevel gear 9 is pacified
On the first jackshaft 11, first jackshaft 11 is connected by the 3rd gear train with the second power output shaft 17.Its
In, the 3rd gear train includes the 3rd travelling gear 10, transition gear 14, the second jackshaft 15 and the 4th travelling gear 16；It is described
3rd travelling gear 10 is arranged on the first jackshaft 11, and the transition gear 14 is arranged on the second jackshaft 15, and described the
Four travelling gears 16 are arranged in the hollow shaft 18 outside the second power output shaft 17；3rd travelling gear 10 and the 4th is passed
Moving gear 16 is meshed with transition gear 14.The change prompt drop square transfer case also includes pneumatic clutch 20 and adpting flange
19, the pneumatic clutch 20 is connected with the second power output shaft 17, and the adpting flange 19 is connected with hollow shaft 18.Institute
State and the first joystick 21 and the second joystick 22 are also equipped with casing 100, first joystick 21 and clutch tooth
Set 3 is connected, and the second joystick 22 is connected with clutch gear 8.
As shown in Figures 1 to 3, as the preferred of the present embodiment, the power input shaft 1 is parallel with the first power output shaft 7
Arrangement, second power output shaft 17 and the spatial vertical of 1 and first power output shaft of power input shaft 7 arrangement, and it is described dynamic
Power input shaft 1, the first power output shaft 7 are parallel, and power input shaft 1, the first power output shaft 7 and the second power output shaft 17 are empty
Between it is vertical, and the first jackshaft 11, the second jackshaft 15 are parallel with the second power output shaft 17.
The present invention operation principle be：
Referring to shown in Fig. 1 to 2, when 1 input power of power input shaft, clutch is controlled by the first joystick 21
Tooth set 3 is engaged with the first duplicate gear 2, and power is delivered to the first power output shaft 7 through the first travelling gear 13, realizes high rotating speed
Small torque drive；When needing to carry out speed change, clutch tooth set 3 and the second duplicate gear 4 are controlled by the first joystick 21
Engagement, power is delivered to the first power output shaft 7 through the second travelling gear 5, realizes that low rotation speed large torque is driven.
Controlled by the second joystick 22 when clutch tooth set 8 is engaged with the first double bevel wheel 12, power is through cone
Gear 9 is delivered to the first jackshaft 11, and jackshaft 11 is rotated forward；Control to work as clutch tooth set by the second joystick 22
8 with the second double bevel wheel 6 when engaging, and power is delivered to the first jackshaft 11, and the first reversely rotation of jackshaft 11 through bevel gear 9
Turn；When the first power is through the first jackshaft 11, the 3rd travelling gear 10, transition gear 14, the 4th travelling gear 16, hollow shaft
18th, adpting flange 19, pneumatic clutch 20 are delivered to the second power output shaft 17, while realizing that centre-to-centre spacing declines, in first
When countershaft 11 is rotated forward, the second power output shaft 17 is rotated forward；When the first jackshaft 11 is reversely rotated, the second power is defeated
Shaft 17 is reversely rotated.
Referring to shown in Fig. 2 to 3, when pneumatic clutch 20 is died, the internal drive structure of pneumatic clutch 20 is separated, hollow shaft
The separate operaton of the first power output shaft 7 is realized in 18 idle running, the unpowered output of the second power output shaft 17；When pneumatic clutch 20
Ventilation, the internal drive structure adhesive of pneumatic clutch 20, power drives through hollow shaft 18, adpting flange 19, pneumatic clutch 20
Second power output shaft 17 works, so as to realize that the first power output shaft 7 links with the second power output shaft 17.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. one kind becomes prompt drop square transfer case, including casing, it is characterised in that：Passed in the casing provided with power input shaft, gear
Motivation structure, the first jackshaft and power output shaft, one end of the power input shaft are stretched out on housing, the gear drive
Provided with two power output shafts, respectively the first power output shaft and the second power output shaft, first power output shaft and
Second power output shaft has one end to stretch out casing；
The gear drive includes first gear group, second gear group, bevel gear and the 3rd gear train；The first gear
Group includes the first duplicate gear, the second duplicate gear, and first duplicate gear, the second duplicate gear are arranged on power input shaft
On, the clutch tooth set for speed change is provided between first duplicate gear and the second duplicate gear；The second gear group bag
Include the first double bevel wheel, the second double bevel wheel, the first travelling gear, the second travelling gear, first double bevel wheel,
Second double bevel wheel, the first travelling gear, the second travelling gear are installed on the first power output shaft, first duplex
Bevel gear is separately mounted to the inner side of the first travelling gear and the second travelling gear, described firstth pair with the second double bevel wheel
The clutch gear for commutation is additionally provided between connection bevel gear and the second double bevel wheel；First duplicate gear and first is passed
Moving gear is meshed, and the second duplicate gear is meshed with the second travelling gear；First double bevel wheel and the second duplex are bored
Gear can be meshed with bevel gear, and the bevel gear is arranged on the first jackshaft, and first jackshaft passes through the 3rd tooth
Wheel group is connected with the second power output shaft.
2. change prompt drop square transfer case according to claim 1, it is characterised in that：3rd gear train includes the 3rd transmission
Gear, transition gear, the second jackshaft and the 4th travelling gear；3rd travelling gear is arranged on the first jackshaft, institute
Transition gear is stated on the second jackshaft, the 4th travelling gear is arranged on the hollow shaft outside the second power output shaft
On；3rd travelling gear and the 4th travelling gear are meshed with transition gear.
3. change prompt drop square transfer case according to claim 2, it is characterised in that：First jackshaft, the second jackshaft
It is parallel with the second power output shaft.
4. change prompt drop square transfer case according to claim 2, it is characterised in that：Also include pneumatic clutch and connection method
Orchid, the pneumatic clutch is connected with the second power output shaft, and the adpting flange is connected with hollow shaft.
5. change prompt drop square transfer case according to claim 1, it is characterised in that：The power input shaft and the first power are defeated
Shaft is arranged in parallel, and second power output shaft is arranged with power input shaft and the first power output shaft spatial vertical, described
In the same plane, and power input shaft, the first power output shaft and the second power are defeated for power input shaft, the first power output shaft
Shaft spatial vertical.
6. change prompt drop square transfer case according to claim 1, it is characterised in that：It is also equipped with being used to realize on the casing
First joystick of speed change and the second joystick for realizing commutation, first joystick are connected with clutch tooth set
Connect, the second joystick is connected with clutch gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418836.7A CN107202139B (en) | 2017-06-06 | 2017-06-06 | Speed-changing moment-reducing transfer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418836.7A CN107202139B (en) | 2017-06-06 | 2017-06-06 | Speed-changing moment-reducing transfer case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202139A true CN107202139A (en) | 2017-09-26 |
| CN107202139B CN107202139B (en) | 2024-05-10 |
Family
ID=59906751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418836.7A Active CN107202139B (en) | 2017-06-06 | 2017-06-06 | Speed-changing moment-reducing transfer case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107202139B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830126A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Electrichydraulic control PTO |
| CN108443429A (en) * | 2018-01-19 | 2018-08-24 | 江苏大学 | One kind cutting vertical stream threshing separation two grades of variable speed drives of transmission system |
| CN108506464A (en) * | 2018-05-25 | 2018-09-07 | 中联重机浙江有限公司 | A kind of transfer case of multistage transfer structure |
| CN112797133A (en) * | 2021-01-15 | 2021-05-14 | 中国铁建重工集团股份有限公司 | Silage harvester header gearbox and silage harvester |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB656586A (en) * | 1948-09-24 | 1951-08-29 | Nat Res Dev | Improvements in and relating to transmission mechanism for vehicles |
| DE914502C (en) * | 1942-12-22 | 1954-07-05 | Maybach Motorenbau G M B H | Lubrication system for change and reversing gears, especially for rail cars |
| US20020142878A1 (en) * | 2001-03-27 | 2002-10-03 | Bansbach Eric A. | Hydraulic shift transfer case with band brake and bi-directional clutch |
| CN202790350U (en) * | 2012-07-13 | 2013-03-13 | 张召兴 | Power-storage reversing gear box |
| CN203115059U (en) * | 2013-03-20 | 2013-08-07 | 韩波 | Lateral output transfer case for tractor |
| CN205036796U (en) * | 2015-08-28 | 2016-02-17 | 云梦县取力器厂 | Rearmounted transfer case of multi -functional parallel double -end dual output |
| CN206918188U (en) * | 2017-06-06 | 2018-01-23 | 荆州市巨鲸传动机械有限公司 | One kind becomes prompt drop away from transfer case |
-
2017
- 2017-06-06 CN CN201710418836.7A patent/CN107202139B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE914502C (en) * | 1942-12-22 | 1954-07-05 | Maybach Motorenbau G M B H | Lubrication system for change and reversing gears, especially for rail cars |
| GB656586A (en) * | 1948-09-24 | 1951-08-29 | Nat Res Dev | Improvements in and relating to transmission mechanism for vehicles |
| US20020142878A1 (en) * | 2001-03-27 | 2002-10-03 | Bansbach Eric A. | Hydraulic shift transfer case with band brake and bi-directional clutch |
| CN202790350U (en) * | 2012-07-13 | 2013-03-13 | 张召兴 | Power-storage reversing gear box |
| CN203115059U (en) * | 2013-03-20 | 2013-08-07 | 韩波 | Lateral output transfer case for tractor |
| CN205036796U (en) * | 2015-08-28 | 2016-02-17 | 云梦县取力器厂 | Rearmounted transfer case of multi -functional parallel double -end dual output |
| CN206918188U (en) * | 2017-06-06 | 2018-01-23 | 荆州市巨鲸传动机械有限公司 | One kind becomes prompt drop away from transfer case |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830126A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Electrichydraulic control PTO |
| CN107830126B (en) * | 2017-11-29 | 2023-12-05 | 滁州悦达实业有限公司 | Electrohydraulic control power output device |
| CN108443429A (en) * | 2018-01-19 | 2018-08-24 | 江苏大学 | One kind cutting vertical stream threshing separation two grades of variable speed drives of transmission system |
| CN108506464A (en) * | 2018-05-25 | 2018-09-07 | 中联重机浙江有限公司 | A kind of transfer case of multistage transfer structure |
| CN112797133A (en) * | 2021-01-15 | 2021-05-14 | 中国铁建重工集团股份有限公司 | Silage harvester header gearbox and silage harvester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107202139B (en) | 2024-05-10 |
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