CN111750049A - Continuously variable transmission for electric loader - Google Patents
Continuously variable transmission for electric loader Download PDFInfo
- Publication number
- CN111750049A CN111750049A CN202010685776.7A CN202010685776A CN111750049A CN 111750049 A CN111750049 A CN 111750049A CN 202010685776 A CN202010685776 A CN 202010685776A CN 111750049 A CN111750049 A CN 111750049A
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- gear
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- output
- planetary
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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
- F16H3/76—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with an orbital gear having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
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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
- F16H57/08—General details of gearing of gearings with members having orbital motion
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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
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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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
- F16H63/40—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 comprising signals other than signals for actuating the final output mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Transmissions (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a continuously variable transmission for an electric loader, which mainly comprises a motor, a planetary differential gear train, a high-speed clutch, a low-speed clutch and a transmission output assembly, wherein the motor is connected with the planetary differential gear train; the planetary differential gear train comprises a gear ring, a planetary gear, a planetary carrier, a first motor output sun gear, a planetary carrier driving gear and a planetary carrier driven gear; the first motor is connected with a first motor output sun gear; the second motor is connected with a driving gear of the second motor; the second motor driving gear is meshed with the second motor driven gear; when the continuously variable transmission for the electric loader is in operation and walking, the first motor and the second motor are controlled to realize the conversion of forward movement and backward movement and the stepless control of speed, so that the continuous stepless speed change can be realized, and good starting performance can be obtained. According to the change of working condition, the performance of the motor can be fully exerted, and the motor has the advantages of continuous stepless speed change, simple structure, reliable work and the like.
Description
Technical Field
The invention belongs to the technical field of design of transmissions of electric loaders, and particularly relates to a continuously variable transmission for an electric loader.
Background
The transmission is the most important transmission component on the loader power transmission system. The performance of the transmission directly determines the performance and the working efficiency of the loader and determines the gear shifting smoothness and comfort of the loader. According to the relevant policy of the country, the pure electric drive is the development direction of special vehicles such as future loaders and the like.
The loaders which are produced and used in large quantities at present use the internal combustion engine to do work, and the transmission type is a hydraulic mechanical type. The hydromechanical transmission for the loader mainly comprises a hydraulic torque converter and a power gear shifting transmission. The main disadvantages of this transmission type transmission are: (1) the gears are few, and the transmission efficiency is low; (2) the gear shifting mode is manual hydraulic gear shifting, and the operation is inconvenient; (3) the structure is complex and the failure is easy to occur.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a continuously variable transmission driven by two motors, which can achieve the purposes of simple structure, convenient operation and high transmission efficiency.
The invention is realized by the following steps: a kind of electric loader uses the variable speed unit, mainly include the electrical machinery, planetary differential gear train, high-speed clutch (15) and low-speed clutch (16) and speed unit output assembly; the number of the motors is two, and the two motors are respectively a first motor (1) and a second motor (2); the planetary differential gear train comprises a gear ring (5), a planetary gear (6), a planet carrier (7), a first motor output sun gear (8), a planet carrier driving gear (9) and a planet carrier driven gear (10); the first motor is connected with a first motor output sun gear (8); the second motor (2) is connected with the second motor driving gear (3); the second motor driving gear (3) is meshed with the second motor driven gear (4); the planetary differential gear train comprises a gear ring (5), a planetary gear (6), a planetary carrier (7) and a first motor output sun gear (8); the clutch comprises a high-speed clutch (15) and a low-speed clutch (16), wherein the high-speed clutch (15) comprises a high-speed driving gear (11) and a high-speed driven gear (12); the low-gear clutch (16) comprises a low-gear driving gear (13) and a low-gear driven gear (14); the transmission output assembly comprises an output driving gear (17), an output driven gear (18), an output shaft (20) and a vehicle speed sensor (19);
the gear ring (5) of the planetary differential gear train is fixedly connected with the driven gear (4) of the second motor; the planet gear (6) is meshed with the gear ring (5) and the first motor output sun gear (8), and the planet carrier (7) is connected with the planet carrier driving gear (9); the planet carrier driving gear (9) is meshed with the planet carrier driven gear (10), and the planet carrier driven gear (10), the high-speed driving gear (11) and the low-speed driving gear (13) are arranged on the same shaft; the high-speed clutch (15) and the low-speed clutch (16) are arranged on the same shaft; an output driven gear (18) and a vehicle speed sensor (19) are mounted on the output shaft (20).
The invention has the following advantages: when the continuously variable transmission for the electric loader is in operation and walking, the first motor and the second motor are controlled to realize the conversion of forward movement and backward movement and the stepless control of speed, so that the continuous stepless speed change can be realized, and good starting performance can be obtained. Meanwhile, the fixed shaft gear transmission part of the continuously variable transmission has a high mechanical gear and a low mechanical gear. According to the change of working condition, the performance of the motor can be fully exerted, and the motor has the advantages of continuous stepless speed change, simple structure, reliable work and the like.
Drawings
FIG. 1 is a schematic diagram of the transmission of embodiment 1 of the present invention;
fig. 2 is a transmission principle diagram of embodiment 2 of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Refer to fig. 1, example 1.
A stepless speed changer for an electric loader mainly comprises two motors, a planetary differential gear train, a high-low gear clutch, a parallel shaft gear transmission pair and the like; the motor comprises a first motor 1, a second motor 2, a second motor driving gear 3 and a second motor driven gear 4; the planetary differential gear train comprises a gear ring 5, a planetary gear 6, a planet carrier 7 and a first motor output sun gear 8; the power of the differential gear train is output by a planet carrier 7 and consists of a planet carrier driving gear 9 and a planet carrier driven gear 10; the clutch comprises a high-speed clutch 15 and a low-speed clutch 16, wherein the high-speed clutch comprises a high-speed driving gear 11, a high-speed driven gear 12, a low-speed driving gear 13 and a low-speed driven gear 14; the transmission output includes an output drive gear 17, an output driven gear 18, an output shaft 20, and a vehicle speed sensor 19.
The connection relationship is as follows: the first motor 1 is connected with a sun gear 8 of the planetary differential gear train, the second motor 2 is connected with a driving gear 3 of the second motor, the driving gear 3 of the second motor is meshed with a driven gear 4 of the second motor, and a gear ring 5 of the differential gear train is fixedly connected with the driven gear 4 of the second motor. The planet wheel 6 is meshed with the gear ring 5 and the sun wheel 8, and the planet carrier 7 is connected with the planet carrier driving gear 9. The planet carrier driving gear 9 is engaged with the planet carrier driven gear 10, and the planet carrier driven gear 10, the high-speed driving gear 11 and the low-speed driving gear 13 are mounted on the same shaft. The high clutch 15 and the low clutch 16 are disposed on the same shaft, and include a high driven gear 12, a low driven gear 14, and an output driving gear 17. An output driven gear 18 and a vehicle speed sensor 19 are mounted on the output shaft 20.
Preferably: the stepless speed change device of the stepless speed changer adopts two motors and a planetary differential gear train, the two motors are both powered by batteries, the first motor 1 is connected with a sun gear 8 of the planetary differential gear train, the second motor 2 drives a gear ring 5 of the differential gear train to rotate through transmission of a pair of cylindrical gears, and the purpose of stepless speed change is achieved by adjusting the rotating speeds of the first motor 1 and the second motor 2 to realize stepless output of a planet carrier of the differential gear train.
Preferably: the stepless speed change planetary differential gear train is output by a planetary carrier, the output is provided with a first-level cylindrical gear transmission shaft, a planetary carrier driving gear 9 is fixedly connected with a planetary carrier 7, and a planetary carrier driven gear 10, a high-speed gear driving gear 11 and a low-speed gear driving gear 13 are arranged on the same shaft.
Preferably: the continuously variable transmission comprises a high clutch 15 and a low clutch 16, the high clutch 15 and the low clutch 16 being arranged on the same shaft.
Preferably: the stepless speed changer is provided with an output driving gear 17 on the shaft of the high-speed clutch 15 and the low-speed clutch 16, and the output driving gear 17 is meshed with an output driven gear 18.
Preferably: the continuously variable transmission output driven gear 18 is connected with an output shaft 20, and the output shaft 20 is provided with a front output flange and a rear output flange which are respectively connected with a front axle and a rear axle of the loader.
Preferably: the continuously variable transmission output driven gear 18 is provided with a vehicle speed sensor 19 which can detect the vehicle speed in real time and provide the vehicle speed to a controller to realize the continuously variable transmission.
When the rotating speed of the motor 2 is 0, the differential wheel system is in a planetary speed reduction working condition, and the stepless speed change of the loader at the low speed can be realized by adjusting the rotating speed of the motor 1. When the speed of the loader reaches a certain walking speed and the motor 1 reaches the highest rotating speed, the motor 2 is started when the speed of the loader still needs to be increased. At this time, the motor 2 drives the gear ring of the differential gear train to rotate, and the stepless speed change can be continuously realized by adjusting the rotating speed of the motor 2. Because the highest speed of the loader during operation is 10-12Km/h and the highest speed of the loader during traveling is 35-40Km/h, a high-speed clutch and a low-speed clutch are arranged on an intermediate shaft of the transmission in order to reduce the working rotating speed and the torque of the motor 1 and the motor 2. When the electric loader works, the low-gear clutch works in a combined mode; when the electric loader is transferred to a place and needs to walk at a high speed, the high-speed clutch is combined to work. The forward and backward movement of the electric loader is realized by controlling the forward and backward rotation of the motor.
When the continuously variable transmission for the electric loader is in operation and walking, the first motor and the second motor are controlled to realize the conversion of forward movement and backward movement and the stepless control of speed, so that the continuous stepless speed change can be realized, and good starting performance can be obtained. Meanwhile, a fixed shaft gear transmission part of the continuously variable transmission has a high mechanical gear and a low mechanical gear. According to the change of working condition, the performance of the motor can be fully exerted, and the motor has the advantages of continuous stepless speed change, simple structure, reliable work and the like.
Refer to example 2 of fig. 2.
A stepless speed changer for an electric loader mainly comprises a first motor 1, a second motor 2, a planetary differential gear train, a parallel shaft gear transmission pair and the like; a second motor driving gear 3 and a second motor driven gear 4; the planetary differential gear train comprises a gear ring 5, a planetary gear 6, a planet carrier 7 and a first motor output sun gear 8; the differential gear train is composed of a planet carrier 7 for outputting power, and mainly composed of a planet carrier driving gear 9 and a planet carrier driven gear 10; the transmission output section includes a reduction drive gear 11 and a reduction driven gear 12, an output drive gear 13 ', an output driven gear 14', an output shaft 16 ', and a vehicle speed sensor 15'.
The connection relationship is as follows: the first motor 1 is connected with a sun gear 8 of a planetary differential gear train, the second motor 2 is connected with a second motor driving gear 3, the second motor driving gear 3 is meshed with a second motor driven gear 4, and a gear ring 5 of the differential gear train is fixedly connected with the motor 2 driven gear 4. The planet wheel 6 is meshed with the gear ring 5 and the sun wheel 8, and the planet carrier 7 is connected with the planet carrier driving gear 9. The planet carrier driving gear 9 is engaged with the planet carrier driven gear 10, and the planet carrier driven gear 10 and the speed reduction driving gear 11 are arranged on the same shaft. The reduction driven gear 12 and the output drive gear 13' are mounted on the same shaft. The output shaft 16 ' is provided with an output driven gear 14 ' and a vehicle speed sensor 15 '.
Preferably: the stepless speed change device of the stepless speed changer adopts two motors and a planetary differential gear train, a first motor 1 is connected with a sun gear 8 of the differential gear train, a second motor 2 drives a gear ring 5 of the differential gear train to rotate through transmission of a pair of cylindrical gears, and stepless output of a planet carrier of the differential gear train is realized by adjusting the rotating speeds of the first motor 1 and the second motor 2, so that the purpose of stepless speed change is achieved.
Preferably: the planet carrier output of the planet differential gear system is provided with a primary cylindrical gear transmission shaft, a planet carrier driving gear 9 is fixedly connected with a planet carrier 7, and a planet carrier driven gear 10 and a speed reduction driving gear 11 are arranged on the same shaft.
Preferably: the output part of the continuously variable transmission is driven by a two-stage cylindrical gear and consists of an output speed reduction driving gear 11, an output speed reduction driven gear 12, an output driving gear 13 'and an output driven gear 14'.
Preferably: the output shaft 16' of the continuously variable transmission is provided with a front output flange and a rear output flange which are respectively connected with a front axle and a rear axle of the loader.
Preferably: the continuously variable transmission is characterized in that a vehicle speed sensor 15 'is arranged on the output driven gear 14' of the continuously variable transmission, can detect the vehicle speed in real time and provides the vehicle speed to a controller to realize the continuously variable transmission.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A continuously variable transmission for an electric loader is characterized in that: the planetary differential gear train transmission mainly comprises a motor, a planetary differential gear train, a high-speed clutch (15), a low-speed clutch (16) and a transmission output assembly; the number of the motors is two, and the two motors are respectively a first motor (1) and a second motor (2); the planetary differential gear train comprises a gear ring (5), a planetary gear (6), a planet carrier (7), a first motor output sun gear (8), a planet carrier driving gear (9) and a planet carrier driven gear (10); the first motor is connected with a first motor output sun gear (8); the second motor (2) is connected with the second motor driving gear (3); the second motor driving gear (3) is meshed with the second motor driven gear (4); the planetary differential gear train comprises a gear ring (5), a planetary gear (6), a planetary carrier (7) and a first motor output sun gear (8); the clutch comprises a high-speed clutch (15) and a low-speed clutch (16), wherein the high-speed clutch (15) comprises a high-speed driving gear (11) and a high-speed driven gear (12); the low-gear clutch (16) comprises a low-gear driving gear (13) and a low-gear driven gear (14); the transmission output assembly comprises an output driving gear (17), an output driven gear (18), an output shaft (20) and a vehicle speed sensor (19);
the gear ring (5) of the planetary differential gear train is fixedly connected with the driven gear (4) of the second motor; the planet gear (6) is meshed with the gear ring (5) and the first motor output sun gear (8), and the planet carrier (7) is connected with the planet carrier driving gear (9); the planet carrier driving gear (9) is meshed with the planet carrier driven gear (10), and the planet carrier driven gear (10), the high-speed driving gear (11) and the low-speed driving gear (13) are arranged on the same shaft; the high-speed clutch (15) and the low-speed clutch (16) are arranged on the same shaft; an output driven gear (18) and a vehicle speed sensor (19) are mounted on the output shaft (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685776.7A CN111750049A (en) | 2020-07-16 | 2020-07-16 | Continuously variable transmission for electric loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685776.7A CN111750049A (en) | 2020-07-16 | 2020-07-16 | Continuously variable transmission for electric loader |
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| Publication Number | Publication Date |
|---|---|
| CN111750049A true CN111750049A (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010685776.7A Pending CN111750049A (en) | 2020-07-16 | 2020-07-16 | Continuously variable transmission for electric loader |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112693306A (en) * | 2021-01-25 | 2021-04-23 | 重庆胜特佳机械有限公司 | Dual-motor driven multimode stepless speed change coupling output system and electric drive assembly |
| CN112747090A (en) * | 2021-01-25 | 2021-05-04 | 重庆胜特佳机械有限公司 | Double-power multi-mode stepless speed change coupling output mechanism |
| CN113653779A (en) * | 2021-07-07 | 2021-11-16 | 东风汽车集团股份有限公司 | Continuously variable transmission and vehicle |
| CN114248262A (en) * | 2021-12-27 | 2022-03-29 | 长沙长泰机器人有限公司 | Single-shaft driving device and method of double-power driven robot |
-
2020
- 2020-07-16 CN CN202010685776.7A patent/CN111750049A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112693306A (en) * | 2021-01-25 | 2021-04-23 | 重庆胜特佳机械有限公司 | Dual-motor driven multimode stepless speed change coupling output system and electric drive assembly |
| CN112747090A (en) * | 2021-01-25 | 2021-05-04 | 重庆胜特佳机械有限公司 | Double-power multi-mode stepless speed change coupling output mechanism |
| CN112693306B (en) * | 2021-01-25 | 2023-02-03 | 重庆胜特佳机械有限公司 | Dual-motor drive multimode stepless speed change coupling output system and electric drive assembly |
| CN113653779A (en) * | 2021-07-07 | 2021-11-16 | 东风汽车集团股份有限公司 | Continuously variable transmission and vehicle |
| CN113653779B (en) * | 2021-07-07 | 2023-05-30 | 东风汽车集团股份有限公司 | Continuously variable transmission and vehicle |
| CN114248262A (en) * | 2021-12-27 | 2022-03-29 | 长沙长泰机器人有限公司 | Single-shaft driving device and method of double-power driven robot |
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