Two-wheel-drive-to-four-wheel-drive electric transmission system for engineering machinery

Abstract

The utility model discloses a two-drive-to-four-drive electric transmission system for engineering machinery, which comprises a gearbox body, a clutch shaft, an intermediate shaft and an output shaft which are sequentially in transmission connection through gears are mounted in the gearbox body, and one end of the clutch shaft is connected with a motor; the output shaft comprises an output shaft A and an output shaft B which are coaxially arranged, an output gear is fixedly installed at the end, close to the output shaft B, of the output shaft A, meshing sleeves capable of sliding left and right are arranged at the opposite inner ends of the output shaft A and the output shaft B and connected with the shifting fork assembly, and output flanges are installed at the opposite outer ends of the output shaft A and the output shaft B. According to the two-wheel-drive-to-four-wheel-drive electric transmission system for the engineering machinery, the driving modes can be conveniently and rapidly switched according to using conditions, and the controllability and fuel economy of the engineering machinery can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a two -drive switching four -wheel drive electric transmission system for engineering machinery belongs to transmission system technical field. BACKGROUND

[0002] Electric transmission system is a kind of device that converts electric energy into mechanical energy, realizes the speed changing effect of mechanical system by controlling the speed and torque output of motor.Electric transmission system includes motor and transmission system, motor is output by output shaft after power reduction and torque increase by transmission system.

[0003] In prior art, electric transmission system applied to engineering machinery generally has the following technical problems in use process:

[0004] At present, the driving mode of electric transmission system is relatively fixed, engineering machinery can only be driven by single mode to travel and work, and it is inconvenient to flexibly switch driving mode according to use conditions, resulting in that there is still a great space for improvement in the controllability and fuel economy of engineering machinery.

[0005] From the above, it is obvious that the prior art has inconvenience and defects in actual use, so it is necessary to improve. CONTENT OF UTILITY MODEL

[0006] The utility model provides a two -drive switching four -wheel drive electric transmission system for engineering machinery according to the deficiency in background art, can conveniently switch driving mode according to use conditions, and be favorable to the controllability and fuel economy of engineering machinery.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A two -drive switching four -wheel drive electric transmission system for engineering machinery, including gearbox body, the gearbox body is internally installed with clutch shaft, intermediate shaft and output shaft that are sequentially transmission connected by gear, one end of clutch shaft is connected with motor;

[0009] The output shaft includes coaxially arranged output shaft A and output shaft B, the end part of output shaft A close to output shaft B is fixedly installed with output gear, the opposite inner ends of output shaft A and output shaft B are provided with meshing sleeve that can slide left and right, the meshing sleeve is connected with fork assembly, and the opposite outer ends of output shaft A and output shaft B are all installed with output flange.

[0010] Further, the clutch shaft, intermediate shaft, output shaft A and output shaft B are all rotationally connected with the gearbox body.

[0011] Further, the clutch is internally provided with two working cavities.

[0012] Further, the clutch is installed on the middle part of the clutch shaft body, and the end of the clutch close to the motor is connected with the disc hub gear A, and the end of the clutch far from the motor is connected with the disc hub gear B.

[0013] Further, the intermediate shaft gear A, the intermediate shaft gear B and the intermediate shaft gear C are sequentially installed on the main body of the intermediate shaft, and the intermediate shaft gear B is arranged close to the intermediate shaft gear C.

[0014] Further, the intermediate shaft gear A is in meshing transmission connection with the disc hub gear A.

[0015] Further, the intermediate shaft gear B is in meshing transmission connection with the output gear.

[0016] Further, the intermediate shaft gear C is in meshing transmission connection with the disc hub gear B.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical scheme:

[0018] The utility model discloses a left and right sliding engagement sleeve is installed on the facing inner end of output shaft A and output shaft B, when the engagement sleeve slides to left, output shaft A does not transmit power to output shaft B, and this is two drive mode, when the engagement sleeve slides to right, output shaft A drives output shaft B to rotate synchronously, and this is four drive mode, and two drive, four drive mode can realize free switching through the sliding of engagement sleeve, can switch to two drive in the running process of vehicle, switches to four drive in the working process, makes the reasonable operation of vehicle, and the operation is easy, and can be more fuel-efficient.

[0019] The utility model will be described in detail below in connection with the drawings and examples. DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the utility model.

[0021] In the drawing, 1-clutch shaft, 2-intermediate shaft, 3-output shaft A, 4-output shaft B, 5-gearbox body, 6-clutch, 7-disc hub gear A, 8-disc hub gear B, 9-intermediate shaft gear A, 10-intermediate shaft gear B, 11-intermediate shaft gear C, 12-output flange A, 13-output flange B, 14-output gear, 15-engagement sleeve, 16-pull fork assembly. CONCRETE IMPLEMENTING METHOD

[0022] In order to have more clear understanding of the technical features, purposes and effects of the utility model, the specific implementing method of the utility model will be described in connection with the drawings.

[0023] For example, Figure 1The utility model provides a two -drive switching four -wheel drive electric transmission system for engineering machinery, including gearbox body 5, gearbox body 5 inside installation has the clutch shaft 1, intermediate shaft 2 and output shaft that drive connection is connected in turn through gear.

[0024] The output shaft includes coaxially arranged output shaft A3 and output shaft B4, and the output gear 14 is fixedly installed on the end portion of the output shaft A3 close to the output shaft B4, and the opposite inner ends of the output shaft A3 and the output shaft B4 are provided with the meshing sleeve 15 that can slide left and right.

[0025] The meshing sleeve 15 is connected with the fork assembly 16, and the meshing sleeve 15 plays a power transmission function.When the fork assembly 16 slides the meshing sleeve 15 to the left, the output shaft A3 does not transmit power to the output shaft B4, and at this time, it is two-drive mode; when the fork assembly 16 slides the meshing sleeve 15 to the right, the output shaft A3 can transmit power to the output shaft B4, and the output shaft A3 and the output shaft B4 rotate synchronously, and at this time, it is four-wheel drive mode.

[0026] The end portion of the output shaft A3 away from the output shaft B4 is provided with the output flange A12, and the end portion of the output shaft B4 away from the output shaft A3 is provided with the output flange B13.

[0027] The clutch shaft 1, the intermediate shaft 2, the output shaft A3 and the output shaft B4 are rotationally connected with the gearbox body 5.

[0028] The clutch 6 is installed on the middle part of the main body of the clutch shaft 1, one end of the clutch 6 close to the motor is connected with the disc hub gear A7, and the other end of the clutch 6 away from the motor is connected with the disc hub gear B8, and two working cavities are arranged in the clutch 6.

[0029] The intermediate shaft gear A9, the intermediate shaft gear B10 and the intermediate shaft gear C11 are sequentially installed on the main body of the intermediate shaft 2, and the intermediate shaft gear B10 is arranged close to the intermediate shaft gear C11.

[0030] The intermediate shaft gear A9 is in meshing transmission connection with the disc hub gear A7.

[0031] The intermediate shaft gear B10 is in meshing transmission connection with the output gear 14.

[0032] The intermediate shaft gear C11 is in meshing transmission connection with the disc hub gear B8.

[0033] The specific working principle of the utility model is as follows:

[0034] In the utility model, the motor inputs power into the gearbox body 5, and after transmission through the clutch shaft 1, the intermediate shaft 2 and the output shaft, the power is output to the axle by the output flange; by controlling the clutch 6, the convenient switching of gears can be realized.

[0035] The utility model discloses a left and right slideable engaging sleeve 15 is installed on the opposite inner end of output shaft A3 and output shaft B4, when engaging sleeve 15 slides to left, output shaft A3 does not transmit power to output shaft B4, at this moment, it is two drive mode, when engaging sleeve 15 slides to right, output shaft A3 drives output shaft B4 to rotate synchronously, at this moment, it is four drive mode, two drive, four drive mode can realize free switching through the sliding of engaging sleeve 15, can make the vehicle switch to two drive in the running process, switch to four drive in the working process, makes the vehicle reasonable operation, can be more fuel-efficient.

[0036] The above is the example of the best implementation mode of the utility model, wherein the part not described in detail is the common knowledge of the ordinary skilled in the art. The protection scope of the utility model is accurate with the content of the claim, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. An electric drive system for an engineering machine, the electric drive system being a two-wheel drive to four-wheel drive switching electric drive system, characterized in that: The gearbox body (5) is internally provided with a clutch shaft (1), an intermediate shaft (2) and an output shaft which are sequentially connected by gear transmission. The output shaft comprises coaxially arranged output shaft A (3) and output shaft B (4), the output shaft A (3) is fixedly installed with an output gear (14) on the end close to the output shaft B (4), the opposite inner ends of the output shaft A (3) and the output shaft B (4) are provided with a left and right slidable meshing sleeve (15), the meshing sleeve (15) is connected with a shift fork assembly (16), and the opposite outer ends of the output shaft A (3) and the output shaft B (4) are both provided with an output flange.

2. The two-wheel drive to four-wheel drive electric drive system for a working machine according to Claim 1, characterized by: The clutch shaft (1), the intermediate shaft (2), the output shaft A (3) and the output shaft B (4) are all rotationally connected with the gearbox body (5).

3. The two-wheel drive to four-wheel drive electric drive system for a construction machine according to Claim 1, characterized by: The clutch (6) is internally provided with two working cavities.

4. A two-wheel drive to four-wheel drive electric drive system for a construction machine according to claim 3, characterized in that: The clutch (6) is installed on the middle part of the main body of the clutch shaft (1), the end close to the motor of the clutch (6) is connected with a disc hub gear A (7), and the end away from the motor of the clutch (6) is connected with a disc hub gear B (8).

5. A two-wheel drive to four-wheel drive electric drive system for a construction machine according to claim 4, characterized in that: The intermediate shaft (2) is sequentially provided with an intermediate shaft gear A (9), an intermediate shaft gear B (10) and an intermediate shaft gear C (11) on the main body, and the intermediate shaft gear B (10) is arranged close to the intermediate shaft gear C (11).

6. A two-wheel drive to four-wheel drive electric drive system for a construction machine according to claim 5, characterized in that: The intermediate shaft gear A (9) is in meshing transmission connection with the disc hub gear A (7).

7. The two-wheel drive to four-wheel drive electric drive system for a construction machine according to claim 5, characterized by: The intermediate shaft gear B (10) is in meshing transmission connection with the output gear (14).

8. The two-wheel drive to four-wheel drive electric drive system for a construction machine according to claim 5, characterized by: The intermediate shaft gear C (11) is in meshing transmission connection with the disc hub gear B (8).

Images