CN115899221A - Electrically driven gearbox of engineering machinery - Google Patents
Electrically driven gearbox of engineering machinery Download PDFInfo
- Publication number
- CN115899221A CN115899221A CN202211256533.7A CN202211256533A CN115899221A CN 115899221 A CN115899221 A CN 115899221A CN 202211256533 A CN202211256533 A CN 202211256533A CN 115899221 A CN115899221 A CN 115899221A
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- gear
- fixed gear
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- clutch
- fixed
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- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
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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
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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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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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
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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
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention relates to an electrically driven gearbox of engineering machinery, which is an electrically driven fixed shaft type structure capable of realizing two gears or three gears, can meet the gear requirements of the engineering machinery such as a land leveler, a cross-country tyre crane and the like, can adjust the gear speed ratio within the range of 0.8-6.5, has the longest transmission route of a low gear, has balanced sizes of all gears, realizes that a large speed ratio bears large torque, has the shortest transmission route of a high gear, realizes that the small speed ratio is quickly switched to transmit torque, and has the least power loss. The multi-gear structure and the few-gear structure are achieved by increasing or decreasing one intermediate shaft and the clutches and gears on the intermediate shaft, conversion is simple and economical, and application and maintenance cost of the multi-gear structure for few gears is reduced. The gearbox provided by the invention adopts a clutch single-package structure, has a simple structure, is easy to process and manufacture, and can avoid system deformation caused by large shaft length due to a clutch double-package structure, so that the gear transmission precision can be improved, the noise of a transmission can be reduced, and the reliability can be improved.
Description
Technical Field
The invention relates to the technical field of electric drive of engineering machinery, in particular to an electric drive gearbox of the engineering machinery.
Background
In recent years, new energy vehicles are rapidly developed, the demand of electrically driven engineering machinery vehicles is increased day by day, an electric driving system has two forms at present, one is a system directly driven by a motor and a wheel reduction gear, the structure is simple, but the control is relatively complex, the system is not mature at present and is less in application, the other is a transmission system formed by replacing an engine with a battery motor on the basis of a traditional driving system, the motor, a gearbox and a drive axle are formed, and the driving system is relatively simple to control and easy to realize.
Because the electric drive motor has a wider speed adjusting range and can rotate forward and backward, the gearbox does not need direction gears or excessive speed gears, the requirement on the gear function of the gearbox is low, and higher requirements on the structural compactness of the gearbox are provided.
Because the working condition of the engineering vehicle such as a land leveler, an off-road tyre crane is complex, the working vehicle has larger torque when needing to work and higher rotating speed when needing to run, and the gearbox still needs to have different gears in order to ensure that the motor is in a high-efficiency rotating speed area under different operation modes, so that the gearbox is required to have larger speed ratio under a heavy-load working mode, and the gearbox has smaller speed ratio under a high-speed running mode.
Furthermore, since the electric drive requires a higher transmission efficiency, it is necessary to make the transmission path of the gearbox as short as possible in order to ensure a sufficiently high transmission efficiency. Therefore, the electrically driven gearbox needs to meet the requirements of wide speed ratio range, simple and compact structure and high transmission efficiency at the same time.
The invention patent of China (application number 202110898611.2) discloses a single motor drive transmission structure and an engineering vehicle, the scheme adopts single motor drive, only can realize a direct connection output single operation mode and two modes of forward driving and backward driving through a transmission and clutch gear shifting structure, although the structure is simple, the speed ratio range is small, and the requirements of engineering vehicles such as a land leveler, an off-road tyre crane and the like on three different speed ratios of a gearbox cannot be met. The technical scheme of the existing electrically-driven gearbox is only two operation modes and driving modes, the gear number is small, and the defect of insufficient speed ratio range exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an electrically driven gearbox of engineering machinery, which adopts a fixed shaft structure with the highest three gears, can meet the gear requirements of the engineering machinery such as a land leveler, a cross-country tyre crane and the like, can adjust the gear ratio within the range of 0.8-6.5, and has the advantages of strong universality, easy processing and manufacturing, low cost, high transmission precision and small noise.
An electrically driven gearbox of engineering machinery comprises an input shaft S-in, a middle shaft S-2 and an output shaft S-out,
one end of the input shaft S-in is used for being connected to a driving motor, a fixed gear Z4 is fixedly arranged on the input shaft S-in, a floating gear Z1 is arranged on the input shaft S-in through a clutch C3,
a fixed gear Z2 is fixedly arranged on the intermediate shaft S-2, a fixed gear Z9 is fixedly arranged on the intermediate shaft S-2, a floating gear Z5 and a floating gear Z7 are arranged on the intermediate shaft S-2 through a clutch C2, the floating gear Z5 and the floating gear Z7 are coaxially fixed,
a fixed gear Z3 is fixedly arranged on the output shaft S-out,
the floating gear Z1 is meshed with the fixed gear Z2, the fixed gear Z2 is meshed with the fixed gear Z3, and the fixed gear Z4 is meshed with the floating gear Z5.
Optionally, the axis of the input shaft S-in and the axis of the output shaft S-out are in the same vertical plane.
Optionally, the clutches C2 and C3 are single-pack clutches.
Alternatively, the gearbox is used to achieve two gear modes of operation,
first gear: the clutch C2 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
and (2) second gear: the clutch C3 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2, and the fixed gear Z3.
Optionally, the gearbox also comprises an intermediate shaft S-1, wherein a fixed gear Z8 is fixedly arranged on the intermediate shaft S-1, a floating gear Z6 is arranged on the intermediate shaft S-1 through a clutch C1, the floating gear Z6 is meshed with the floating gear Z7, and the fixed gear Z8 is meshed with the fixed gear Z9.
Optionally, the axis of the countershaft S-1 and the axis of the countershaft S-2 lie in the same horizontal plane.
Optionally, the clutch C1 is a single pack clutch.
Alternatively, the gearbox is used to achieve three gear operating modes,
first gear: the clutch C1 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the floating gear Z7, the floating gear Z6, the fixed gear Z8, the fixed gear Z9, the fixed gear Z2, the fixed gear Z3;
and (2) second: the clutch C2 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
and (3) third gear: the clutch C3 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2, and the fixed gear Z3.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: the invention provides an electrically-driven fixed-shaft gearbox with three highest gears, which can meet the gear requirements of engineering machinery such as land levelers, off-road tyre cranes and the like, the gear ratio can be adjusted within the range of 0.8-6.5, the transmission route of a low-speed gear is longest, all gears are balanced in size, the torque is transmitted by rapidly switching small gear ratios, and the power loss is small. The multi-gear gearbox has the advantages that one intermediate shaft, the clutch and the gear on the intermediate shaft are added compared with the few-gear gearbox, the demand of more or less gears can be met by increasing or decreasing the intermediate shaft, the clutch and the gear on the intermediate shaft, and the production and use cost can be greatly reduced. The clutch that adopts in this gearbox is single package structure, simple structure, and easily manufacturing effectively improves gear drive precision, reduces the noise of gearbox, promotes the reliability.
Drawings
Fig. 1 is a transmission schematic diagram of an electrically driven gearbox of a construction machine in a first embodiment of the invention;
FIG. 2 is a schematic end view of an electrically driven gearbox of a construction machine according to a first embodiment of the present invention;
fig. 3 is a transmission schematic diagram of an electrically driven gearbox of a construction machine according to a second embodiment of the present invention;
fig. 4 is a schematic end view of an electrically driven gearbox of a construction machine according to a second embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Example one
As shown in fig. 1 and 2, an electrically driven gearbox of a construction machine comprises an input shaft S-in, an intermediate shaft S-2 and an output shaft S-out, wherein one end of the input shaft S-in is used for connecting to a driving motor, a fixed gear Z4 is fixedly arranged on the input shaft S-in, a floating gear Z1 is arranged on the input shaft S-in through a clutch C3, a fixed gear Z2 is fixedly arranged on the intermediate shaft S-2, a fixed gear Z9 is fixedly arranged on the intermediate shaft S-2, a floating gear Z5 and a floating gear Z7 are arranged on the input shaft S-in through the clutch C2, the floating gear Z5 and the floating gear Z7 are coaxially fixed, a fixed gear Z3 is fixedly arranged on the output shaft S-out, the floating gear Z1 is meshed with the fixed gear Z2, the fixed gear Z2 is meshed with the fixed gear Z3, and the fixed gear Z4 is meshed with the floating gear Z5.
More specifically, the axis of the input shaft S-in and the axis of the output shaft S-out are located in the same vertical plane. The clutch C2 and the clutch C3 are single-pack clutches.
The first transmission of the present embodiment is used for realizing two gear operating modes, wherein:
first gear: the clutch C2 is in a combined state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
and (2) second: the clutch C3 is in a combined state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2 and the fixed gear Z3.
The gearbox designed in the first embodiment can realize two gears, meets the requirement of the engineering machinery host with few gears, can realize two gears by only twice gear meshing, and has short transmission line and less power loss. Parts in the structure do not have an empty state and can participate in the realization of the first gear or the second gear, so that the waste of the parts is avoided, and the production and use cost is reduced; meanwhile, the single-pack clutch is adopted in the gearbox, so that a complex double-pack clutch is avoided, and the generation and maintenance cost is effectively reduced.
Example two
As shown in fig. 3 and 4, in another electrically driven transmission for a construction machine, in order to meet the application of the transmission to a main machine of the construction machine with a multi-gear requirement, an intermediate shaft S-1 is added to the transmission of the embodiment on the basis of the first embodiment, a fixed gear Z8 is fixedly mounted on the intermediate shaft S-1, a floating gear Z6 is mounted on the intermediate shaft S-1 through a clutch C1, the floating gear Z6 is meshed with a floating gear Z7, and the fixed gear Z8 is meshed with a fixed gear Z9.
More specifically, the axis of the input shaft S-in and the axis of the output shaft S-out are located in the same vertical plane, and the axis of the intermediate shaft S-1 and the axis of the intermediate shaft S-2 are located in the same horizontal plane.
The clutch C1 is a single-pack clutch, and the clutch C2 and the clutch C3 are single-pack clutches.
The transmission of the second embodiment is used to realize three-gear operating modes, wherein:
first gear: the clutch C1 is in a combined state, and power is transmitted to an output shaft S-out through an input shaft S-in, a fixed gear Z4, a floating gear Z5, a floating gear Z7, a floating gear Z6, a fixed gear Z8, a fixed gear Z9, a fixed gear Z2 and a fixed gear Z3;
and (2) second: the clutch C2 is in a combined state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
third gear: the clutch C3 is in a combined state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2 and the fixed gear Z3.
The gearbox designed in the second embodiment can realize three gears and meet the requirement of a multi-gear engineering mechanical host, an intermediate shaft and a clutch, a floating gear and a fixed gear on the intermediate shaft are added on the basis of the gearbox designed in the first embodiment to increase a low-speed gear, namely a first gear, the transmission route of the low-speed gear is longest, all gears participating in transmission are balanced in size, large speed ratio and large torque bearing are realized, the second gear and the third gear are realized by twice gear engagement, the transmission route is short, and the purpose of quickly switching small speed ratio to transmit torque and minimizing power loss is realized.
Compared with the prior art, the electrically-driven fixed-shaft type power gear shifting gearbox capable of realizing two gears or three gears can meet the gear requirements of engineering machinery such as a land leveler and an off-road tyre crane, the gear speed ratio can be adjusted within the range of 0.8-6.5, the transmission route of a low gear is longest, the sizes of gears are balanced, the large speed ratio is used for bearing large torque, the transmission route of a high gear is shortest, the small speed ratio is used for quickly switching transmission torque, and the power loss is minimum. The multi-gear structure and the few-gear structure are realized by increasing or decreasing one intermediate shaft and the clutches and gears on the intermediate shaft, the conversion is simple, and the application and maintenance cost of the multi-gear structure for the few gears is reduced. The gearbox provided by the invention adopts a clutch single-pack structure, has a simple structure, is easy to process and manufacture, can avoid system deformation caused by large shaft length due to a clutch double-pack structure, and further can improve the gear transmission precision, reduce the noise of a transmission and improve the reliability.
The above detailed description should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An electrically driven gearbox of engineering machinery is characterized by comprising an input shaft S-in, an intermediate shaft S-2 and an output shaft S-out,
one end of the input shaft S-in is used for being connected to a driving motor, a fixed gear Z4 is fixedly arranged on the input shaft S-in, a floating gear Z1 is arranged on the input shaft S-in through a clutch C3,
the intermediate shaft S-2 is fixedly provided with a fixed gear Z2, a fixed gear Z9 and a floating gear Z5 and a floating gear Z7 through a clutch C2, the floating gear Z5 and the floating gear Z7 are coaxially fixed,
a fixed gear Z3 is fixedly arranged on the output shaft S-out,
the floating gear Z1 is engaged with the fixed gear Z2, the fixed gear Z2 is engaged with the fixed gear Z3, and the fixed gear Z4 is engaged with the floating gear Z5.
2. A transmission according to claim 1 wherein the axis of the input shaft S-in and the axis of the output shaft S-out lie in the same vertical plane.
3. A transmission according to claim 1, wherein said clutches C2, C3 are single pack clutches.
4. A gearbox according to any one of claims 1 to 3 for achieving two gear modes of operation,
first gear: the clutch C2 is in a combined state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
and (2) second: the clutch C3 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2, and the fixed gear Z3.
5. A transmission according to any one of claims 1 to 3, further comprising an intermediate shaft S-1, said intermediate shaft S-1 having a fixed gear Z8 fixedly mounted thereon, a floating gear Z6 mounted thereon via a clutch C1, said floating gear Z6 meshing with said floating gear Z7, said fixed gear Z8 meshing with said fixed gear Z9.
6. The transmission of claim 5, wherein the axis of said countershaft S-1 and the axis of said countershaft S-2 are in the same horizontal plane.
7. A gearbox according to claim 5 wherein the clutch C1 is a one pack clutch.
8. A gearbox according to claim 5 for achieving three-gear operating modes,
first gear: the clutch C1 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the floating gear Z7, the floating gear Z6, the fixed gear Z8, the fixed gear Z9, the fixed gear Z2, and the fixed gear Z3;
and (2) second: the clutch C2 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
and (3) third gear: the clutch C3 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2, and the fixed gear Z3.
9. A gearbox according to claim 6 or 7, characterised in that the gearbox is adapted to achieving three gear operating modes,
first gear: the clutch C1 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the floating gear Z7, the floating gear Z6, the fixed gear Z8, the fixed gear Z9, the fixed gear Z2, the fixed gear Z3;
and (2) second: the clutch C2 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the fixed gear Z4, the floating gear Z5, the fixed gear Z2 and the fixed gear Z3;
third gear: the clutch C3 is in an engaged state, and power is transmitted to the output shaft S-out through the input shaft S-in, the floating gear Z1, the fixed gear Z2, and the fixed gear Z3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256533.7A CN115899221A (en) | 2022-10-14 | 2022-10-14 | Electrically driven gearbox of engineering machinery |
| PCT/CN2023/100335 WO2024077991A1 (en) | 2022-10-14 | 2023-06-15 | Electric drive gearbox of construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256533.7A CN115899221A (en) | 2022-10-14 | 2022-10-14 | Electrically driven gearbox of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115899221A true CN115899221A (en) | 2023-04-04 |
Family
ID=86487393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211256533.7A Pending CN115899221A (en) | 2022-10-14 | 2022-10-14 | Electrically driven gearbox of engineering machinery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115899221A (en) |
| WO (1) | WO2024077991A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024077991A1 (en) * | 2022-10-14 | 2024-04-18 | 江苏汇智高端工程机械创新中心有限公司 | Electric drive gearbox of construction machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062063Y2 (en) * | 1987-12-22 | 1994-01-19 | 株式会社神崎高級工機製作所 | Two-speed transmission |
| CN102392885A (en) * | 2011-06-24 | 2012-03-28 | 重庆大学 | Automatic transmission of pure electromobile double clutch |
| CN113623369A (en) * | 2020-05-09 | 2021-11-09 | 卡特彼勒公司 | Transmission and working machine comprising same |
| CN111734793B (en) * | 2020-06-22 | 2023-03-21 | 江苏汇智高端工程机械创新中心有限公司 | Multi-gear power gear shifting gearbox |
| CN213479071U (en) * | 2020-08-19 | 2021-06-18 | 坤泰车辆系统（常州）有限公司 | Two-gear pure electric vehicle gearbox |
| CN215334219U (en) * | 2021-07-12 | 2021-12-28 | 英轩重工有限公司 | Two-gear gearbox of electric loader |
| CN115899221A (en) * | 2022-10-14 | 2023-04-04 | 江苏汇智高端工程机械创新中心有限公司 | Electrically driven gearbox of engineering machinery |
-
2022
- 2022-10-14 CN CN202211256533.7A patent/CN115899221A/en active Pending
-
2023
- 2023-06-15 WO PCT/CN2023/100335 patent/WO2024077991A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024077991A1 (en) * | 2022-10-14 | 2024-04-18 | 江苏汇智高端工程机械创新中心有限公司 | Electric drive gearbox of construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024077991A1 (en) | 2024-04-18 |
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