Automatic gear shifting speed reducer for electric vehicle
Technical Field
The utility model belongs to reduction gear field for the electric motor car, concretely relates to automatic gear shifting reduction gear for electric motor car.
Background
At present, the electric vehicle on the market is generally provided with only one gear, the output torque force is small during the operation, the load capacity is poor, the current value is large during the operation, the power consumption is high, the service life of a battery is short, and the climbing and the acceleration can be realized only by increasing the current.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an automatic gear shifting reduction gear for electric motor car, overcome above-mentioned defect, the current value is big when solving the operation, and power consumptive fast, battery life is short, climbing, the problem that can only rely on the increase current to realize with higher speed.
In order to solve the technical problem, the utility model provides an automatic gear shifting reduction gear for electric motor car, including box, drive shafting, middle shafting and output shafting set up in the box, drive shafting with middle shafting meshing, middle shafting with output shafting meshing.
As a preferable scheme of the automatic gear shifting reducer for the electric vehicle of the present invention, the driving shaft system includes a driving shaft, a driving gearwheel and a driving pinion, the driving gearwheel and the driving pinion are disposed on the driving shaft,
the middle shafting is composed of a middle shaft, an electromagnet, a middle shaft pinion, a two-way clutch, a one-way clutch, a middle shaft gearwheel, a reversing assembly and a middle shaft driving gear, the electromagnet, the middle shaft pinion, the two-way clutch, the one-way clutch, the middle shaft gearwheel, the reversing assembly and the middle shaft driving gear are arranged on the middle shaft, the electromagnet is matched with the two-way clutch to control the rotation of the middle shaft pinion and the middle shaft gearwheel, the one-way clutch controls the rotation of the middle shaft gearwheel, the reversing assembly controls the rotation of the middle shaft gearwheel,
the output shaft system consists of an output shaft and an output shaft gear, the output shaft gear is arranged on the output shaft,
the driving gearwheel is engaged with the intermediate shaft gearwheel, the driving pinion is engaged with the intermediate shaft gearwheel, and the intermediate shaft driving gearwheel is engaged with the output shaft gearwheel.
Compared with the prior art, the utility model provides a pair of automatic gear shifting reduction gear for electric motor car provides bigger output torque of electric motor car, longer battery life through the automatic gear shifting of reduction gear, and this automatic gear shifting reduction gear provides that the electric motor car advances to keep off at a high speed, advances to keep off at a low speed, reverse the three fender position of keeping off to advancing to keep off at a high speed and advancing to keep off at a low speed and can automatic switch-over under the certain condition. The electric vehicle has small current values at three gears of a high-speed forward gear, a low-speed forward gear and a reverse gear, low power consumption and long service life of a battery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein,
fig. 1 is a schematic structural diagram of an automatic gear shifting speed reducer for an electric vehicle according to the present invention.
Wherein: 1 is a box body, 2 is a driving shaft, 3 is an intermediate shaft, 4 is an output shaft, 5 is a driving large gear, 6 is a driving small gear, 7 is an electromagnet, 8 is an intermediate shaft small gear, 9 is a bidirectional clutch, 10 is a one-way clutch, 11 is an intermediate shaft large gear, 12 is a reversing assembly, 13 is an intermediate shaft driving gear, and 14 is an output shaft gear.
Detailed Description
An automatic gear shifting reduction gear for electric motor car, it includes: the device comprises a box body 1, a driving shaft system, a middle shaft system and an output shaft system, wherein the driving shaft system, the middle shaft system and the output shaft system are arranged in the box body 1, the driving shaft system is meshed with the middle shaft system, and the middle shaft system is meshed with the output shaft system.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the following embodiments.
First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Secondly, the utility model discloses utilize structural schematic diagram etc. to carry out the detailed description, when detailing the embodiment of the utility model discloses, for the convenience of explanation, the schematic diagram that shows automatic gear shift reduction gear structure for electric motor car can not do local enlargement according to general proportion, moreover the schematic diagram is the example only, and it should not limit here the scope of the protection of the utility model. In addition, the actual fabrication process should include three-dimensional space of length, width and depth.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of an automatic gear shifting reducer for an electric vehicle according to the present invention. As shown in fig. 1, the automatic gear shifting reducer for the electric vehicle includes a driving shaft 2, a driving gearwheel 5 and a driving pinion 6, wherein the driving gearwheel 5 and the driving pinion 6 are disposed on the driving shaft 2.
The middle shafting can control the speed reducer to automatically switch from a low gear to a high gear and from the high gear to the low gear. The middle shafting comprises jackshaft 3, electro-magnet 7, jackshaft pinion 8, two-way clutch 9, one-way clutch 10, jackshaft gear wheel 11, subassembly 12, the jackshaft driving gear 13 of backing a car, electro-magnet 7, jackshaft pinion 8, two-way clutch 9, one-way clutch 10, jackshaft gear wheel 11, subassembly 12 and the jackshaft driving gear 13 setting of backing a car are in on the jackshaft 3, electro-magnet 7 cooperation two-way clutch 9 control the rotation of jackshaft pinion 8 and jackshaft gear wheel 11, one-way clutch 10 control the rotation of jackshaft gear wheel 11, subassembly 12 control of backing a car the rotation of jackshaft gear wheel 11.
The output shaft system is composed of an output shaft 4 and an output shaft gear 14, and the output shaft gear 14 is arranged on the output shaft 4.
The driving gearwheel 5 is engaged with the intermediate shaft gearwheel 8, the driving gearwheel 6 is engaged with the intermediate shaft gearwheel 11, and the intermediate shaft driving gearwheel 13 is engaged with the output shaft gearwheel 14.
The working principle of the automatic gear shifting speed reducer for the electric vehicle is as follows:
when the electric vehicle runs, the driving shaft 2 is connected with the motor, and the output shaft 4 is connected with the rear axle of the electric vehicle.
When the motor rotates forwards, the driving shaft 2 drives the driving gearwheel 5 and the driving pinion 6 to rotate simultaneously, at the moment, the electromagnet 7 is matched with the bidirectional clutch 9 to control the rotation of the intermediate shaft pinion 8 and the intermediate shaft gearwheel 11, at the moment, the intermediate shaft pinion 8 idles and does not transmit torque, the intermediate shaft gearwheel 11 transmits the torque from the driving shaft 2 to the intermediate shaft 3, the intermediate shaft 3 transmits the torque to the output shaft 4 through the intermediate shaft driving gear 13, and the output shaft 4 transmits the torque to a rear axle of the electric vehicle through the output shaft gear 14. At the moment, the rotation speed of the rear axle is relatively slow, and the transmitted torque is large. The process realizes the forward low-speed running of the electric vehicle.
When the speed of the electric vehicle is increased to a certain speed, the electromagnet 7 cooperates with the two-way clutch 9 to control the rotation of the intermediate shaft pinion gear 8 and the intermediate shaft gearwheel 11, at the moment, the intermediate shaft gearwheel 11 idles and does not transmit torque, the intermediate shaft pinion gear 8 transmits the torque from the driving shaft 2 to the intermediate shaft 3, the intermediate shaft 3 transmits the torque to the output shaft 4 through the intermediate shaft driving gear 13, and the output shaft 4 transmits the torque to the rear axle of the electric vehicle through the output shaft gear 14. At the moment, the rear axle has a higher rotating speed and transmits smaller torque. The low gear is switched to the high gear automatically, and the low gear is mainly switched to the high gear by the movement of the electromagnet 7 and the bidirectional clutch 9.
When the motor reverses, the drive shaft 2 drives the drive gearwheel 5 and the drive pinion 6 rotate simultaneously, at this moment, the electromagnet 7 cooperates with the bidirectional clutch 9 to control the rotation of the intermediate shaft pinion 8, the reversing assembly 12 controls the rotation of the intermediate shaft gearwheel 11, at this moment, the intermediate shaft pinion 8 idles and does not transmit torque, the intermediate shaft gearwheel 11 transmits torque from the drive shaft 2 to the intermediate shaft 3, the intermediate shaft 3 passes through the intermediate shaft driving gear 13 to transmit torque to the output shaft 4, and the output shaft 4 passes through the output shaft gear 14 to transmit torque to the rear axle of the electric vehicle. At the moment, the rotation speed of the rear axle is relatively slow, and the transmitted torque is large. The process realizes the backing operation of the electric vehicle.
It should be understood by those skilled in the art that one of the features or objects of the present invention is to: automatic gear shift reduction gear for electric motor car, automatic gear shift through the reduction gear provides the bigger output torque of electric motor car, longer battery life, this automatic gear shift reduction gear provides that the electric motor car advances to keep off at a high speed, advances to keep off, reverse the three fender position of keeping off of car fender to advance to keep off and advance to keep off at a low speed at a high speed and can automatic switch-over under the certain condition. The electric vehicle has small current values at three gears of a high-speed forward gear, a low-speed forward gear and a reverse gear, low power consumption and long service life of a battery.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.