An assembling and transferring device for automobile electric drive main reducer

Abstract

An assembly and transfer device for an automotive electric drive main reducer includes a mounting frame. Universal casters are installed at the four corners of the lower end of the mounting frame. Mounting columns and multiple component mounting plates are installed on the left and right sides of the upper end face of the mounting frame. Guide grooves are provided at the upper ends of the mounting columns. An indexing wheel is installed on the right side of the guide groove of the right mounting column, and the indexing wheel is fixedly connected to one side of the right flat plate connecting shaft in the guide groove. A reduction mechanism is installed on the left side of the guide groove of the left mounting column, and the reduction gear shaft in the reduction mechanism is fixedly connected to one side of the left flat plate connecting shaft in the guide groove. A quick-change positioning mechanism is provided between the two mounting columns. The left and right ends of the quick-change positioning mechanism are fixedly connected to the other sides of the right and left flat plate connecting shafts, respectively. The quick-change positioning mechanism includes an electric drive mounting plate, on which a first cam positioning plate and a second cam positioning plate are provided. A positioning claw mechanism is also provided on the inner side of the mounting columns.

Description

Technical Field

[0001] This invention relates to the field of automotive electric drive assembly manufacturing technology, specifically to an assembly and transfer device for an automotive electric drive main reducer. Background Technology

[0002] In the commercial vehicle sector, the third-generation integrated electric drive main reduction gear and the second-generation electric drive main reduction gear are core transmission components. Currently, there is a wide variety of such main reduction gear products developed for commercial vehicles, with a large production and assembly volume. Moreover, the assembly process requires a series of operations such as pressing, tightening, and testing in various postures, which places high demands on the stability, accuracy, and efficiency of the assembly process.

[0003] In existing technologies, the assembly of this type of electrically driven main reducer generally adopts a manual assembly method. During the assembly process, manual workpiece flipping, handling, and multi-position positioning are required. This not only significantly increases the labor intensity of operators and results in low production assembly efficiency, making it difficult to meet the needs of large-scale production, but also leads to insufficient control precision in workpiece flipping and handling during manual operation. This can easily cause collisions and scrapes between workpieces and between workpieces and tooling, resulting in surface damage and precision deviations, affecting the assembly quality and performance of the main reducer. Furthermore, the poor consistency of manual assembly operations makes it difficult to ensure uniformity of operation standards for each process under multi-position assembly, further reducing the product assembly qualification rate and increasing production rework costs.

[0004] In summary, traditional manual assembly methods can no longer meet the product technical requirements and large-scale production process requirements of third-generation integrated electric drive main reducers and second-generation electric drive main reducers. There is an urgent need for a dedicated assembly device that is highly adaptable, easy to operate, and capable of stable assembly in multiple postures, in order to solve the technical problems of high labor intensity, high risk of collision, low assembly efficiency and low pass rate in the existing assembly methods. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an assembly and transfer device for automotive electric drive main reduction gears. This transfer device is capable of transferring third-generation integrated electric drive main reduction gears and second-generation electric drive main reduction gears.

[0006] The objective of this invention is achieved through the following solution: an assembly and transfer device for an automotive electric drive main reducer, comprising a mounting frame, with casters at the four corners of the lower end of the mounting frame, mounting columns and multiple component mounting plates on the left and right sides of the upper end face of the mounting frame, a guide groove at the upper end of the mounting columns, an indexing wheel on the right side of the guide groove of the right mounting column, the indexing wheel being fixedly connected to one side of the right flat plate connecting shaft in the guide groove, a reduction mechanism on the left side of the guide groove of the left mounting column, the reduction gear shaft in the reduction mechanism being fixedly connected to one side of the left flat plate connecting shaft in the guide groove, a quick-change positioning mechanism between the two mounting columns, the left and right ends of the quick-change positioning mechanism being fixedly connected to the other side of the right flat plate connecting shaft and the left flat plate connecting shaft, respectively, the quick-change positioning mechanism comprising an electric drive mounting plate, a first cam positioning plate and a second cam positioning plate being provided on the electric drive mounting plate; a positioning claw mechanism is also provided on the inner side of the mounting columns, the positioning claw mechanism being fixedly connected to the other side of the right flat plate connecting shaft and the left flat plate connecting shaft, the space between the positioning claw mechanisms being a space for placing the electric drive assembly.

[0007] The electric drive mounting plate, the first cam positioning plate, and the second cam positioning plate are respectively provided with a first positioning pin and a second positioning pin at the front and rear ends of the upper surface of the upper surface of the electric drive mounting plate, the first cam positioning plate, and the second cam positioning plate. The center of the electric drive mounting plate, the first cam positioning plate, and the second cam positioning plate is a cam positioning space. Pressure arms are provided on the left and right sides of the upper surface of the electric drive mounting plate.

[0008] The component mounting plate includes a first component mounting plate, a second component mounting plate, a third component mounting plate, a fourth component mounting plate, and a fifth component mounting plate disposed at various locations on the upper surface of the mounting platform.

[0009] The positioning jaw mechanism includes a left three-jaw mounting plate and a right three-jaw mounting plate. On one side end face of the left three-jaw mounting plate, a first left positioning pin, a second left positioning pin, and a third left positioning pin are respectively arranged laterally at the jaw ends. A left drive shaft is arranged laterally at the center of the other side end face of the left three-jaw mounting plate, and a left support bearing is installed on the left drive shaft. On one side end face of the right three-jaw mounting plate, a first right positioning pin, a second right positioning pin, and a third right positioning pin are respectively arranged laterally at the jaw ends. A right drive shaft is arranged laterally at the center of the other side end face of the right three-jaw mounting plate, and a right support bearing is installed on the right drive shaft.

[0010] The lower end of the indexing wheel is provided with an elastic pin seat, and an elastic pin is provided on the elastic pin seat to connect with the indexing wheel.

[0011] The reduction mechanism is a worm gear mechanism, with a handwheel on the front side and a handle that passes through the guide groove in the guide groove of the mounting column on the left side.

[0012] A heightening block is installed between the mounting column and the mounting platform.

[0013] The mounting platform is an I-beam frame, with guide support columns installed between the casters at the lower end of the mounting platform. The upper end of the guide support columns is connected and fixed to the mounting platform, and the lower end of the guide support columns is equipped with guide bearings.

[0014] The quick-change positioning mechanism and the positioning claw mechanism are equipped with lifting rings.

[0015] The advantages of this invention are that this device is compatible with the assembly and transfer of third-generation integrated electric drive main reducers and second-generation electric drive main reducers. The quick-change positioning mechanism and positioning claw mechanism in the device can be continuously rotated, and the replacement time of the quick-change positioning mechanism and positioning claw mechanism is less than 1 minute. Furthermore, this device reduces labor costs and avoids the problems of bumps, high labor intensity, and low work efficiency during manual assembly and transfer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 A schematic diagram of the main reduction gear assembly of the third-generation integrated electric drive; Figure 3 This is a schematic diagram of the second-generation electric drive main reduction assembly. Detailed Implementation

[0017] like Figures 1 to 3As shown, an assembly and transfer device for an automotive electric drive main reducer includes a mounting frame 16. Four casters 15 are respectively installed at the lower corners of the mounting frame 16 to facilitate the transfer of the electric drive assembly. Mounting columns 23 and multiple component mounting plates are respectively installed on the left and right sides of the upper surface of the mounting frame 16. A heightening block 20 is installed between the mounting columns 23 and the mounting frame 16. The mounting frame 16 is an I-beam frame. Guide support columns 13 are installed between the casters 15 at the lower end of the mounting frame 16. The upper end of the guide support column 13 is connected and fixed to the mounting frame 16, and the lower end of the guide support column 13 is equipped with a guide bearing 14. The guide support column 13 and the guide bearing 14 are used to connect with an AGV tractor and slide into the production line's fixed guide rail, fixing the transfer position of the transfer device and preventing cross-transferring and confusion within the production line. The component mounting plates include a first component mounting plate 17, a second component mounting plate 18, a third component mounting plate 12, a fourth component mounting plate 32, and a fifth component mounting plate 19, all located on the upper surface of the mounting frame 16. A guide groove 38 is provided at the upper end of the mounting column 23. An indexing wheel 30 is provided on the right side of the guide groove 38 of the right-side mounting column 23. An elastic pin seat 33 is provided at the lower end of the indexing wheel 30, and an elastic pin 31 is provided on the elastic pin seat 33 to connect with the indexing wheel 30. The indexing wheel 30 is connected and fixed to one side of the right flat plate connecting shaft 37 in the guide groove 38. A reduction mechanism 21, which is a worm gear mechanism, is provided on the left side of the guide groove 38 of the left-side mounting column 23. A handwheel 22 is provided on the front side of the reduction mechanism 21, and the handwheel 22 is connected to the worm gear in the reduction mechanism 21. A handle 34 is provided through the guide groove 38 of the left-side mounting column 23. The reducer shaft 40 in the reduction mechanism 21 is connected and fixed to one side of the left flat plate connecting shaft 24 in the guide groove 38. A quick-change positioning mechanism is set between the two mounting columns. The left and right ends of the quick-change positioning mechanism are respectively connected and fixed to the other side of the right flat plate connecting shaft 37 and the left flat plate connecting shaft 24. The quick-change positioning mechanism includes an electric drive mounting plate 35. A first cam positioning plate 27 and a second cam positioning plate 26 are set on the electric drive mounting plate 35. A first positioning pin 28 and a second positioning pin 29 are respectively set at the front and rear ends of the upper end face of the electric drive mounting plate 35, the first cam positioning plate 27 and the second cam positioning plate 26. The center of the electric drive mounting plate 35, the first cam positioning plate 27 and the second cam positioning plate 26 is the cam positioning space. Pressure arms 25 are set on the left and right sides of the upper end face of the electric drive mounting plate 35. When assembling and transporting second-generation electric drive main reducers of different specifications, the first cam positioning plate 27 and the second cam positioning plate 26 of different specifications can be replaced for positioning.The inner side of the mounting column 23 is also provided with a positioning claw mechanism, which includes a left three-jaw mounting plate 36 and a right three-jaw mounting plate 3. On one side of the left three-jaw mounting plate 36, a first left positioning pin 7, a second left positioning pin 8, and a third left positioning pin 11 are horizontally arranged at the ends of the claws. A left drive shaft 9 is horizontally arranged at the center of the other side of the left three-jaw mounting plate 36, and a left support bearing 10 is mounted on the left drive shaft 9. On one side of the right three-jaw mounting plate 3, a first right positioning pin 4, a second right positioning pin 5, and a third right positioning pin 6 are horizontally arranged at the ends of the claws. A right drive shaft 1 is horizontally arranged at the center of the other side of the right three-jaw mounting plate 3, and a right support bearing 2 is mounted on the right drive shaft 1. The positioning claw mechanism is connected and fixed to the other side of the right flat plate connecting shaft 37 and the left flat plate connecting shaft 24, respectively. The space between the positioning claw mechanisms is for placing the electric drive assembly. Lifting rings are provided on the quick-change positioning mechanism and the positioning claw mechanism to facilitate replacement by a lifting device.

[0018] This transfer device can transfer both the third-generation integrated electric drive main reducer and the second-generation electric drive main reducer. The following is the process of transferring the third-generation integrated electric drive main reducer and the second-generation electric drive main reducer using this transfer device.

[0019] The third-generation integrated electric drive main reducer for transport: 1. First, assemble the positioning claw mechanism on both sides on the mounting column and tighten it with connecting bolts; 2. Use a special lifting tool to lift the main reducer to be installed onto the assembly trolley, and use a butt joint positioning jaw mechanism at the reducer end; 3. Place the remaining parts to be assembled in the designated location on the assembly vehicle; 4. Move to the corresponding assembly station. During the assembly process, use the right indexing wheel to clamp the components before starting the assembly.

[0020] Second-generation integrated electric drive main reducer for transport: 1. Quick-change positioning mechanism for lifting using lifting tools; 2. With the positioning surface facing upwards, after clamping the indexing wheel, hoist the main reducer to be installed onto the quick-change positioning mechanism; 3. Manually tightened quick-change positioning mechanism; 4. Place the remaining parts to be assembled in the designated location on the assembly vehicle; 5. Move to the corresponding assembly station. During the assembly process, use the right indexing wheel to clamp the components before starting the assembly.

[0021] When assembling the third-generation integrated electric drive main reducer, a two-sided gripper design is used to clamp the workpiece at a total of six support points on both sides before hoisting it onto the assembly vehicle. The workpiece is rotated and supported by double-row ball bearings on the positioning gripper mechanism. The fixture is designed with a reduction mechanism to control the rotation speed and 360° hovering, ensuring assembly in multiple postures. The fixture is designed with a contoured nylon mounting plate to hold bearings, gears, back covers, and other parts to be assembled. The bottom of the device is designed with casters for easy movement to different assembly stations. The reduction mechanism in the device is a worm gear mechanism, which can hover at any position to prevent the workpiece from rapidly flipping and injuring personnel or parts if the operator releases it. During assembly, the operator can change posture by rotating the handwheel. Both second-generation and third-generation assembly require assembly and inspection in multiple postures, which also saves effort. The guide groove on the left side is used for positioning the workpiece in four postures: 0°, 90°, 180°, and 270°, to prevent the workpiece from rotating during assembly. The handle is designed for quick pressing by the operator.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. An assembly and transfer device for an electric drive main reduction gear in an automobile, comprising a mounting frame (16), characterized in that: The mounting platform (16) is provided with casters (15) at the four corners of its lower end. The upper end of the mounting platform (16) is provided with mounting columns (23) and multiple component mounting plates on the left and right sides. The upper end of the mounting column (23) is provided with a guide groove (38). The right side of the guide groove (38) of the right mounting column (23) is provided with an indexing wheel (30). The indexing wheel (30) is connected and fixed to one side of the right flat plate connecting shaft (37) in the guide groove (38). The left side of the guide groove (38) of the left mounting column (23) is provided with a reduction mechanism (21). The reduction gear shaft (40) in the reduction mechanism (21) is connected to the left flat plate connecting shaft (37) in the guide groove (38). One side of the plate connecting shaft (24) is fixedly connected, and a quick-change positioning mechanism is provided between the two mounting columns. The left and right ends of the quick-change positioning mechanism are respectively fixedly connected to the other side of the right plate connecting shaft (37) and the left plate connecting shaft (24). The quick-change positioning mechanism includes an electric drive mounting plate (35). A first cam positioning plate (27) and a second cam positioning plate (26) are provided on the electric drive mounting plate (35). A positioning claw mechanism is also provided on the inner side of the mounting column (23). The positioning claw mechanism is respectively fixedly connected to the other side of the right plate connecting shaft (37) and the left plate connecting shaft (24). The space between the positioning claw mechanisms is for placing the electric drive assembly.

2. The assembly and transfer device for the main reduction gear of an automobile electric drive system according to claim 1, characterized in that: The electric drive mounting plate (35), the first cam positioning plate (27) and the second cam positioning plate (26) are respectively provided with a first positioning pin (28) and a second positioning pin (29) at the front and rear ends of the upper end face. The center of the electric drive mounting plate (35), the first cam positioning plate (27) and the second cam positioning plate (26) is the space for cam positioning. Pressure arms (25) are provided on the left and right sides of the upper end face of the electric drive mounting plate (35).

3. The assembly and transfer device for the main reduction gear of an electric vehicle according to claim 1, characterized in that: The component mounting plates include a first component mounting plate (17), a second component mounting plate (18), a third component mounting plate (12), a fourth component mounting plate (32), and a fifth component mounting plate (19) disposed at various locations on the upper surface of the mounting frame (16).

4. The assembly and transfer device for the main reduction gear of an automobile electric drive system according to claim 1, characterized in that: The positioning jaw mechanism includes a left three-jaw mounting plate (36) and a right three-jaw mounting plate (3). On one side end face of the left three-jaw mounting plate (36), a first left positioning pin (7), a second left positioning pin (8) and a third left positioning pin (11) are respectively arranged laterally at the jaw ends. On the other side end face of the left three-jaw mounting plate (36), a left drive shaft (9) is arranged laterally in the center. A left support bearing (10) is arranged on the left drive shaft (9). On one side end face of the right three-jaw mounting plate (3), a first right positioning pin (4), a second right positioning pin (5) and a third right positioning pin (6) are respectively arranged laterally at the jaw ends. On the other side end face of the right three-jaw mounting plate (3), a right drive shaft (1) is arranged laterally in the center. A right support bearing (2) is arranged on the right drive shaft (1).

5. The assembly and transfer device for the main reduction gear of an automobile electric drive system according to claim 1, characterized in that: The lower end of the indexing wheel (30) is provided with an elastic pin seat (33), and an elastic pin (31) is provided on the elastic pin seat (33) to connect with the indexing wheel (30).

6. The assembly and transfer device for the main reduction gear of an automobile electric drive according to claim 1, characterized in that: The deceleration mechanism (21) is a worm gear mechanism. A handwheel (22) is provided on the front side of the deceleration mechanism (21), and a handle (34) is provided in the guide groove (38) of the mounting column (23) on the left side.

7. The assembly and transfer device for the main reduction gear of an automobile electric drive system according to claim 1, characterized in that: A heightening block (20) is provided between the mounting column (23) and the mounting platform (16).

8. The assembly and transfer device for the main reduction gear of an automobile electric drive according to claim 1, characterized in that: The mounting frame (16) is an I-beam frame. A guide support column (13) is provided between the casters (15) at the lower end of the mounting frame (16). The upper end of the guide support column (13) is connected and fixed to the mounting frame (16), and a guide bearing (14) is provided at the lower end of the guide support column (13).

9. The assembly and transfer device for the main reduction gear of an automobile electric drive system according to claim 1, characterized in that: The quick-change positioning mechanism and the positioning claw mechanism are equipped with lifting rings.

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