Gearbox driven by motor for engineering machinery

Abstract

The utility model discloses a motor-driven gearbox for engineering machinery, which comprises a gearbox body, a driving shaft is arranged in the gearbox body in a penetrating manner, the driving end of the driving shaft is connected with a motor, and a driving gear is mounted at the driven end of the driving shaft; a walking pump shaft and a working pump shaft which are collinearly arranged are arranged on the side part of the driving shaft, the walking pump shaft and the working pump shaft are rotatably mounted in the gearbox body, sliding sleeves are mounted at the opposite inner ends of the walking pump shaft and the working pump shaft, the sliding sleeves are connected with a shifting fork mechanism, and a pump gear which is in meshing transmission with the driving gear is mounted on the walking pump shaft; the outer end of the walking pump shaft is connected with a walking pump, and the outer end of the working pump shaft is connected with a working pump. According to the gearbox driven by the motor for the engineering machinery, the running state of the working pump can be conveniently controlled by arranging the sliding sleeve, the loss of the motor is reduced, and the efficiency of the motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor drive's gearbox for engineering machinery belongs to gearbox technical field. BACKGROUND

[0002] The electric drive gearbox is a key component in the electric drive system, which is responsible for transmitting the power of the motor to the wheels or other driving devices, and at the same time realizes different speed and torque output to meet the different driving needs of vehicles or equipment. The electric drive gearbox has the advantages of compact structure, high efficiency and low noise, and is widely used in electric vehicles, electric engineering machinery and other fields.

[0003] At present, the electric drive gearbox is equipped with a walking pump and a working pump. The walking pump usually refers to a pump that provides hydraulic power for the walking mechanism of a vehicle or equipment. The walking pump drives the hydraulic motor or oil cylinder of the walking mechanism by generating high-pressure oil, thereby realizing the movement of the vehicle or equipment. The working pump refers to a pump that provides power for the actuator (such as oil cylinder, motor, etc.) in the hydraulic system.

[0004] The walking pump and the working pump of the electric drive gearbox are in a constant working state during operation, but the working pump does not always need to work. The constant working state of the working pump increases the loss of the motor and reduces the efficiency of the motor.

[0005] In summary, the prior art has obvious inconvenience and defects in actual use, so it is necessary to improve it. INVENTION CONTENTS

[0006] The utility model discloses in order to solve the technical problem of the prior art, provide a motor drive's gearbox for engineering machinery, can be convenient control the working pump's operating state through setting the sliding sleeve, reduce the loss of the motor, improve the motor efficiency.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A motor drive's gearbox for engineering machinery, comprising a gearbox body, a driving shaft is arranged in the gearbox body, the driving end of the driving shaft is connected with a motor, and a driving gear is installed on the driven end of the driving shaft.

[0009] The walking pump shaft and the working pump shaft are rotatably installed in the gearbox body, a sliding sleeve is installed on the opposite inner end of the walking pump shaft and the working pump shaft, the sliding sleeve is connected with a fork mechanism, and a pump gear is installed on the walking pump shaft and engaged with the driving gear.

[0010] Further, the outer end of the walking pump shaft is connected with a walking pump, and the outer end of the working pump shaft is connected with a working pump.

[0011] Furthermore, the transmission case is equipped with a forward clutch shaft, a reverse clutch shaft, an intermediate shaft and an output shaft which are sequentially connected in transmission.

[0012] Furthermore, an intermediate shaft gear A and an intermediate shaft gear B are installed on the intermediate shaft.

[0013] Furthermore, the intermediate shaft gear A is meshed with the hub gear installed on the reverse clutch shaft for transmission.

[0014] Furthermore, the intermediate shaft gear B is meshed with the output gear A installed on the output shaft for transmission.

[0015] Furthermore, an output gear B is mounted on the output shaft.

[0016] Furthermore, an engaging sleeve is provided between the output gear A and the output gear B. The engaging sleeve is connected to the shift fork mechanism, and the shift fork mechanism can drive the engaging sleeve to move left and right along the output shaft.

[0017] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0018] The motor power is input into the gearbox through the driving gear, and then passes through a series of transmissions in the gearbox. Finally, the power is output from the gearbox through the output flanges at both ends of the output shaft. The output shaft has a high and low speed switching function.

[0019] During the operation of the utility model, the travel pump is in a normal working state. The operating state of the working pump is controlled by the sliding sleeve. When the sliding sleeve slides to the right, the pump shaft of the travel pump drives the pump shaft of the working pump to rotate synchronously, and the travel pump and the working pump operate synchronously. When the sliding sleeve slides to the left, the pump shaft of the travel pump does not drive the pump shaft of the working pump to rotate, and the working pump is in a non-operating state. The working pump is opened and closed by arranging the sliding sleeve, thereby reducing the loss of the motor and improving the efficiency of the motor.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural diagram of Example 1;

[0022] Figure 2 yes Figure 1 A magnified view of the local structure;

[0023] Figure 3 It is a structural diagram of Example 2.

[0024] In the figure, 1 - gearbox body, 2 - driving shaft, 3 - driving gear, 4 - pump gear, 5 - travel pump pump shaft, 6 - working pump pump shaft, 7 - sliding sleeve, 8 - forward gear clutch shaft, 9 - reverse gear clutch shaft, 10 - disc hub gear, 11 - intermediate shaft, 12 - output shaft, 13 - intermediate shaft gear A, 14 - intermediate shaft gear B, 15 - output gear A, 16 - output gear B, 17 - meshing sleeve. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific embodiments of the utility model will be described with reference to the drawings.

[0026] Example 1

[0027] As Figure 1 and Figure 2 As shown in the utility model together, a kind of gearbox of motor drive for engineering machinery is provided, including gearbox body 1, driving shaft 2 is arranged in gearbox body 1, the driving end of driving shaft 2 is connected with motor, and driving gear 3 is installed on the driven end of driving shaft 2.

[0028] Driving shaft 2 side has collinearly arranged travel pump pump shaft 5 and working pump pump shaft 6, and travel pump pump shaft 5 and working pump pump shaft 6 are rotatably installed in gearbox body 1, and sliding sleeve 7 is installed on the opposite inner end of travel pump pump shaft 5 and working pump pump shaft 6, and sliding sleeve 7 is connected with shift fork mechanism, and pump gear 4 is installed on travel pump pump shaft 5, which is engaged with driving gear 3 to drive.

[0029] The outer end of travel pump pump shaft 5 is connected with travel pump, and the outer end of working pump pump shaft 6 is connected with working pump.

[0030] The utility model is in running process travel pump is normal working state, and the operation of working pump is controlled by sliding sleeve 7, when sliding sleeve 7 slides to right, travel pump pump shaft 5 drives working pump pump shaft 6 to rotate synchronously, when sliding sleeve 7 slides to left, travel pump pump shaft 5 does not drive working pump pump shaft 6 to rotate.

[0031] The gearbox body 1 is installed with forward gear clutch shaft 8, reverse gear clutch shaft 9, intermediate shaft 11 and output shaft 12, which are sequentially and drivingly connected.

[0032] Intermediate shaft 11 is installed with intermediate shaft gear A 13 and intermediate shaft gear B 14, intermediate shaft gear A 13 is engaged with disc hub gear 10 installed on reverse gear clutch shaft 9 to drive, and intermediate shaft gear B 14 is engaged with output gear A 15 installed on output shaft 12 to drive.

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

[0034] The motor power is input into the gearbox 1 through the driving gear 3, and the power is finally output from the gearbox 1 through the output flanges at both ends of the output shaft 12 through a series of transmissions in the gearbox 1.

[0035] The driving gear 3 in the utility model sequentially transmits power to the pump gear 4 and the traveling pump shaft 5, and the traveling pump is in a normal working state during operation, and the utility model controls the working state of the working pump through the sliding sleeve 7, when the sliding sleeve 7 slides to the right, the traveling pump shaft 5 drives the working pump shaft 6 to rotate synchronously, and the traveling pump and the working pump operate synchronously, when the sliding sleeve 7 slides to the left, the traveling pump shaft 5 does not drive the working pump shaft 6 to rotate, and the working pump is in a non-operating state, and the working pump is started and stopped through the sliding sleeve 7, so that the loss of the motor can be reduced.

[0036] Embodiment 2

[0037] As shown in Figure 3 The utility model provides a gearbox of motor drive for engineering machinery, and the difference between embodiment 2 and embodiment 1 lies in that:

[0038] The output shaft 12 in embodiment 1 is provided with an output gear A 15, and the output shaft 12 in embodiment 2 is provided with an output gear A 15 and an output gear B 16, the output gear A 15 is a low-speed output gear, and the output gear B 16 is a high-speed output gear.

[0039] The output gear A 15 and the output gear B 16 are provided with a meshing sleeve 17, the meshing sleeve 17 is connected with a shift fork mechanism, the shift fork mechanism can drive the meshing sleeve 17 to move left and right along the output shaft 12, so that the meshing sleeve 17 is engaged with the output gear A 15 or the output gear B 16, and the output shaft 12 has a high-low speed switching function.

[0040] The above is the example of the best implementation mode of the utility model, wherein the parts not described in detail are the common knowledge of ordinary technical personnel in the art. The protection scope of the utility model is subject to the content of claims, 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. A motor-driven gearbox for a construction machine, characterized by: The transmission comprises a gearbox body (1), a driving shaft (2) passing through the gearbox body (1), a driving end of the driving shaft (2) being connected to a motor, and a driving gear (3) being mounted on the driven end of the driving shaft (2); A travel pump shaft (5) and a working pump shaft (6) are collinearly arranged on the side of the driving shaft (2). The travel pump shaft (5) and the working pump shaft (6) are rotatably mounted in the gearbox body (1). Slide sleeves (7) are mounted on the inner ends of the travel pump shaft (5) and the working pump shaft (6). The slide sleeve (7) is connected to the shift fork mechanism. A pump gear (4) meshing with the driving gear (3) is mounted on the travel pump shaft (5).

2. A motor-driven gearbox for a working machine as claimed in claim 1, characterized in that: The outer end of the travel pump shaft (5) is connected to the travel pump, and the outer end of the working pump shaft (6) is connected to the working pump.

3. A motor-driven transmission for a construction machine as claimed in claim 1, characterized in that: The transmission case (1) is provided with a forward clutch shaft (8), a reverse clutch shaft (9), an intermediate shaft (11), and an output shaft (12) which are sequentially connected in transmission.

4. A motor-driven gearbox for a construction machine according to claim 3, characterized in that: An intermediate shaft gear A (13) and an intermediate shaft gear B (14) are mounted on the intermediate shaft (11).

5. A motor-driven gearbox for a construction machine according to claim 4, characterized in that: The intermediate shaft gear A (13) is meshed with the hub gear (10) mounted on the reverse clutch shaft (9).

6. A motor-driven gearbox for a construction machine according to claim 5, characterized in that: The intermediate shaft gear B (14) is meshed with the output gear A (15) mounted on the output shaft (12).

7. A motor-driven transmission for a construction machine according to claim 6, characterized in that: An output gear B (16) is also mounted on the output shaft (12).

8. A motor-driven transmission for a construction machine according to claim 7, characterized in that: An engaging sleeve (17) is provided between the output gear A (15) and the output gear B (16). The engaging sleeve (17) is connected to a shift fork mechanism, and the shift fork mechanism can drive the engaging sleeve (17) to move left and right along the output shaft (12).

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