Electric drive speed reducer assembling device and method
The use of the electric drive reducer assembly device has solved the problem of difficult quality control in electric drive reducer assembly, realizing a high-precision and efficient assembly process, avoiding the defects of traditional manual assembly, and improving product performance and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-03-31
AI Technical Summary
In the existing technology, the assembly quality of electric drive reducers is difficult to control, and assembly defects such as bumps and cracks are prone to occur, affecting product performance and safety.
An electric drive reducer assembly device is adopted, including a reference base, a motor mounting sub-device, a component positioning sub-device, and a pressing sub-device. Through positioning and mounting components, rotor drive components, tensioning mechanisms, and gripping mechanisms, the device achieves motor fixation, component positioning, and automatic pressing, avoiding defects caused by the instability of manual operation.
This improved the assembly quality and efficiency of the electric drive reducer, reduced assembly errors, avoided defects such as bumps and cracks, and ensured assembly accuracy and safety.
Smart Images
Figure CN121756053A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electric drive reducer assembly technology, and specifically to an electric drive reducer assembly device and method. Background Technology
[0002] The electric drive system is the power output device of new energy vehicles. Some electric drive systems adopt a coaxial multi-in-one integrated design, which integrates the electric control, motor and reducer into one unit, with the motor and reducer arranged coaxially.
[0003] The assembly process of a coaxial multi-in-one electric drive system includes electrical control assembly, motor assembly, and reducer assembly. In the reducer assembly, there is a meshing relationship between multiple gears and single gears between the various levels of components of the reducer, which puts forward higher requirements for assembly accuracy, especially ensuring the coaxiality and parallelism of the meshing planes between the various levels of components.
[0004] During the actual assembly process of electric drive reducers, assembly defects such as bumps and cracks are prone to occur, making it difficult to control the assembly quality and thus adversely affecting the performance and safety of the product. Summary of the Invention
[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide an electric drive reducer assembly device and method, which aims to alleviate or solve the problem of difficulty in controlling the assembly quality of electric drive reducers in the prior art.
[0006] In a first aspect, embodiments of this application provide an electric drive reducer assembly device. This device is suitable for assembling reducers in coaxial electric drive systems. The electric drive reducer assembly device includes a reference base, a motor mounting sub-device, a component positioning sub-device, and a pressing sub-device. The motor mounting sub-device is disposed on the reference base and includes a positioning mounting component and a rotor drive component. The positioning mounting component supports and fixes the motor of the electric drive system, and the rotor drive component connects to the rotor shaft of the motor and drives the rotor shaft to rotate. The component positioning sub-device is disposed on the reference base and includes multiple component positioning parts for positioning multiple components of the reducer to be assembled. The pressing sub-device is disposed on the reference base and is used to grip and press the multiple components to be assembled.
[0007] By adopting the above technical solution, the motor mounting sub-device, component positioning sub-device, and pressing sub-device are all set on a reference base. All assembly operations are completed on the reference base, effectively ensuring the uniformity of the assembly reference for multiple components to be assembled, and better controlling the assembly quality of the coaxial electric drive reducer. By setting up the component positioning sub-device to position multiple components to be assembled in the reducer, the motor mounting sub-device to position and fix the motor of the electric drive system, and the pressing sub-device to grip and press up multiple components to be assembled, this method can replace traditional manual assembly methods. It can avoid assembly defects such as bumps and cracks caused by unstable operation, thereby improving the assembly quality and efficiency of the coaxial electric drive reducer.
[0008] In some embodiments, the positioning and mounting assembly includes a support frame, a motor support base disposed on top of the support frame, and a motor clamping mechanism disposed around the motor support base, the motor clamping mechanism being used to clamp the motor onto the motor support base.
[0009] By adopting the above technical solution, by setting a corresponding motor support for the motor of the electric drive system, and using a motor clamping mechanism to press the motor onto the motor support, a foundation is provided for the precise pressing of multiple components to be assembled subsequently, which helps to reduce assembly errors.
[0010] In some embodiments, the rotor drive assembly includes a tensioning mechanism for connection to the rotor shaft and a first drive motor for driving the tensioning mechanism to rotate.
[0011] The above-mentioned technical solution, which uses a tensioning mechanism connected to the rotor shaft of the motor, can accommodate rotor shaft inner bores of various sizes, exhibiting strong adaptability. Furthermore, the tensioning mechanism is characterized by its ease of quick engagement and disengagement from the rotor shaft's inner bore.
[0012] In some embodiments, the motor mounting sub-device further includes a lifting assembly for driving the rotor drive assembly to rise and fall.
[0013] By adopting the above technical solution, the lifting component can be set to adjust the position of the tensioning mechanism vertically. The lifting component can be used to drive the tensioning mechanism to extend into and leave the inner hole of the rotor shaft. The lifting component can also be used to adjust the position of the rotor drive component to adapt to different motors.
[0014] In some embodiments, the component positioning sub-device includes a base plate disposed on the reference base and a plurality of component positioning parts disposed on the base plate, wherein at least one of the component positioning parts is provided with a positioning pin for positioning the circumferential position of the component to be assembled.
[0015] By adopting the above technical solution and setting locating pins, it is helpful to ensure the circumferential position of the components to be assembled, thereby ensuring assembly quality and reducing assembly damage.
[0016] In some embodiments, the pressing sub-device includes a gripping mechanism and a linear actuator for driving the gripping mechanism to move up and down. The linear actuator is mounted on the reference base via a translation mechanism, which drives the pressing sub-device to translate between a gripping position and a pressing position. When the pressing sub-device is in the gripping position, it is located above the component positioning sub-device. When the pressing sub-device is in the pressing position, it is located above the motor mounting sub-device.
[0017] The above technical solution enables automated assembly, which helps to ensure assembly quality and efficiency.
[0018] In some embodiments, the pressing sub-device further includes a sensor for detecting the pressing force.
[0019] By adopting the above technical solution, the pressing force is monitored in real time by a sensor. When the pressing force exceeds the preset threshold, the assembly can be stopped, which can prevent damage to the electric drive system components.
[0020] In some embodiments, the reference base is a frame-like structure with an open top.
[0021] Using the above technical solution, the frame-like reference base is easy to implement, and the upper side of the reference base is open, which facilitates the hoisting of the motor and the components to be assembled.
[0022] Secondly, embodiments of this application provide an electric drive reducer assembly method, employing the electric drive reducer assembly device described in any of the above claims. The electric drive reducer assembly method includes the following steps: Install the motor of the electric drive system onto the motor mounting sub-device, connect the rotor drive assembly to the rotor shaft of the motor, and position and install multiple components of the reducer to be assembled onto multiple component positioning parts; The press-fitting sub-device is controlled to sequentially grab and press-fit multiple components to be assembled.
[0023] By adopting the above technical solution, the assembly of the reducer of the coaxial electric drive system can be realized by using the electric drive reducer assembly device, which can improve the assembly quality and assembly efficiency of the coaxial electric drive reducer.
[0024] In some embodiments, the plurality of components to be assembled include a primary component, a secondary component, a tertiary component, and an output component; the primary component includes a first planetary carrier and a plurality of first planetary gears mounted on the first planetary carrier, the first planetary carrier being used to connect with the rotor shaft of the motor; the secondary component includes a first gear ring and a second gear ring connected to each other, the first gear ring being used to mesh with the plurality of first planetary gears; the tertiary component includes a second planetary carrier and a plurality of second planetary gears mounted on the second planetary carrier, the plurality of second planetary gears being used to mesh with the second gear ring; the output component includes a reducer housing and a third gear ring mounted in the reducer housing, the third gear ring being used to mesh with the plurality of second planetary gears, the reducer housing being used to connect with the motor housing of the motor; The process of controlling the pressing sub-device to sequentially grasp and press multiple components to be assembled includes the following steps: The pressing sub-device is controlled to grasp and press the primary component; Measure the gap between the primary component and the motor housing of the motor, and select and install axial clearance adjustment shims according to the gap; The press-fitting sub-device is controlled to grip and press-fit the secondary component; The press-fitting sub-device is controlled to grasp and press-fit the three-stage components; Control the pressing sub-device to grasp and press the output component.
[0025] By adopting the above technical solution and making reasonable use of the structural characteristics of the reducer in the coaxial electric drive system, the reducer components are divided into four parts for assembly, and the assembly steps are set in a reasonable manner, which helps to improve assembly accuracy and assembly efficiency. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application will be described below.
[0027] Figure 1 This is a schematic diagram of the electric drive reducer assembly device disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the motor mounting sub-device disclosed in the embodiments of this application; Figure 3 This is a schematic diagram of the component positioning sub-device disclosed in the embodiments of this application; Figure 4 This is a schematic diagram of the operation of the component positioning sub-device disclosed in the embodiments of this application; Figure 5 This is a schematic diagram of the pressing sub-device disclosed in the embodiments of this application; Figure 6This is a schematic diagram of the translation mechanism disclosed in the embodiments of this application; Figure 7 This is one of the working schematic diagrams of the electric drive reducer assembly device disclosed in the embodiments of this application; Figure 8 This is a second schematic diagram of the operation of the electric drive reducer assembly device disclosed in the embodiments of this application; Figure 9 This is the third working schematic diagram of the electric drive reducer assembly device disclosed in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the reducer assembly disclosed in the embodiments of this application; Figure 11 This is a schematic diagram of the structure of a primary component disclosed in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of the secondary component disclosed in the embodiments of this application; Figure 13 This is a schematic diagram of the structure of the three-level component disclosed in the embodiments of this application; Figure 14 This is a schematic diagram of the structure of the output component disclosed in the embodiments of this application; Figure 15 This is a flowchart of the electric drive reducer assembly method disclosed in the embodiments of this application.
[0028] Explanation of reference numerals in the attached figures: 1—Base plate; 2—Motor mounting sub-device; 3—Component positioning sub-device; 4—Pressure fitting sub-device; 5—Translation mechanism; 6—Primary component; 7—Secondary component; 8—Tertiary component; 9—Output component; 10—Motor; 201—Support frame; 202—Motor support seat; 203—Motor clamping mechanism; 204—First slide rail; 205—First sliding seat; 206—First drive motor; 207—Coupling; 208—Tightening mechanism; 301—Base plate; 302—Component positioning part; 303—Positioning pin; 401—Linear actuator; 402—Gripping mechanism; 403—Mounting base; 501—Second slide rail; 502—Second sliding seat; 503—First ball screw mechanism; 504—Second drive motor; 505—Third slide rail; 506—Third slider; 507—Second ball screw mechanism; 508—Third drive mechanism; 601—First planetary carrier; 602—First planetary gear; 701—First gear ring; 702—Second gear ring; 801—Second planetary carrier; 802—Second planetary gear; 901—Third gear ring, 902—Reducer housing. Detailed Implementation
[0029] The terms "first," "second," etc., are used for descriptive purposes only and have no sequential or technical meaning, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Directional terms used in this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," are merely for reference to the orientation shown in the accompanying drawings. The use of directional terms is for better and clearer explanation and understanding of this application, and not to indicate the orientation of the referred device or component in an actual application scenario.
[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the two parts can rotate relative to each other after connection. "Sliding connection" refers to a connection where the two parts can slide relative to each other after connection.
[0031] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.
[0032] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0033] As described in the background section, coaxial multi-function electric drive systems have high requirements for assembly precision. During the actual assembly process of the electric drive reducer, assembly defects such as bumps and cracks are prone to occur, making it difficult to control the assembly quality.
[0034] To alleviate or solve the problem of difficulty in controlling the assembly quality of electric drive reducers in the prior art, this application proposes an electric drive reducer assembly device.
[0035] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the electric drive reducer assembly device disclosed in the embodiments of this application. Figure 2 This is a schematic diagram of the structure of the motor mounting sub-device 2 disclosed in the embodiments of this application. Figure 3 This is a schematic diagram of the component positioning sub-device 3 disclosed in an embodiment of this application. This electric drive reducer assembly device is suitable for assembling reducers in coaxial electric drive systems. The electric drive reducer assembly device includes a base 1, a motor mounting sub-device 2, a component positioning sub-device 3, and a pressing sub-device 4. The motor mounting sub-device 2 is mounted on the base 1 and is equipped with a positioning mounting component and a rotor drive component. The positioning mounting component supports and fixes the motor 10 of the electric drive system, and the rotor drive component can connect to the rotor shaft of the motor 10 and drive the rotor shaft to rotate. The component positioning sub-device 3 is mounted on the base 1 and is equipped with multiple component positioning parts 302, which are used to position multiple components of the reducer to be assembled. The pressing sub-device 4 is mounted on the base 1 and is used to grip and press multiple components to be assembled.
[0036] By adopting the above technical solution, the motor mounting sub-device 2, component positioning sub-device 3, and pressing sub-device 4 are all set on the reference base 1. All assembly operations are completed on the reference base 1, effectively ensuring the uniformity of the assembly reference for multiple components to be assembled, and better controlling the assembly quality of the coaxial electric drive reducer. By setting the component positioning sub-device 3 to position multiple components to be assembled in the reducer, setting the motor mounting sub-device 2 to position and fix the motor 10 of the electric drive system, and setting the pressing sub-device 4 to grip and press multiple components to be assembled, this method can replace traditional manual assembly methods, avoiding assembly defects such as bumps and cracks caused by unstable operation, thereby improving the assembly quality and efficiency of the coaxial electric drive reducer.
[0037] Please refer to Figure 2 In some embodiments, the positioning and mounting assembly includes a support frame 201, a motor support base 202 disposed on the top of the support frame 201, and a motor clamping mechanism 203 disposed around the motor support base 202. The motor clamping mechanism 203 is used to clamp the motor 10 onto the motor support base 202.
[0038] By adopting the above technical solution, by setting a corresponding motor support seat 202 for the motor 10 of the electric drive system, and using the motor pressing mechanism 203 to press the motor 10 onto the motor support seat 202, a foundation is provided for the precise pressing of multiple components to be assembled subsequently, which helps to reduce assembly errors.
[0039] In specific implementation, the motor clamping mechanism 203 can adopt an electric drive or a pneumatic scheme, using an electric actuator or a pneumatic actuator pneumatic pressure block to apply clamping force to the motor housing, so as to clamp the motor 10 onto the motor support base 202.
[0040] In some embodiments, the rotor drive assembly includes a tensioning mechanism 208 for connection to the rotor shaft and a first drive motor 206 for driving the tensioning mechanism 208 to rotate.
[0041] Using the above technical solution, the tensioning mechanism 208 is used to connect the rotor shaft of the motor 10, transmitting the rotational speed of the first drive motor 206 to the rotor shaft, providing rotational speed for the meshing and assembly of each stage of the reducer components. The use of the tensioning mechanism 208 to connect to the rotor shaft of the motor 10 can accommodate rotor shaft inner bores of various sizes, exhibiting strong adaptability. Furthermore, the tensioning mechanism 208 is characterized by easy and quick engagement and disengagement from the inner bore of the rotor shaft.
[0042] When the components to be assembled are being assembled, the rotor shaft of the first drive motor 206 drives the rotor shaft of the drive motor 10 to rotate, providing the speed required for the gears of the components to be assembled to mesh. The speed can be adjusted according to the process parameters. The purpose is to ensure that the gears do not collide abnormally due to excessive speed when the components to be assembled are meshing, to avoid damage to the gears or gear cracks, and to ensure the assembly quality of the reducer.
[0043] In practical implementation, the tensioning mechanism 208 typically includes a tensioning element and a spreading element for opening the tensioning element. An electric actuator can be used to drive the relative movement between the spreading element and the tensioning element, thereby driving the spreading element to open the tensioning element and release the pressure on the tensioning element. More specifically, the tensioning mechanism 208 includes a base, a spreading element, multiple tensioning elements movably connected to the base, and an electric push rod connected between the spreading element and the base. The outer periphery of the spreading element is provided with an inclined surface or a conical surface. The electric push rod drives the spreading element to move up and down, using the inclined surface or conical surface of the spreading element to compress the multiple tensioning elements outward, thus achieving the expansion of the tensioning mechanism 208. Obviously, the tensioning element can also be a tensioning sleeve structure, with the spreading element used to open the tensioning sleeve. Besides using an inclined surface or conical surface to squeeze the tensioning element open, the spreading element can also use a linkage drive structure, a cam structure, or other transmission structures to squeeze the tensioning element open.
[0044] Please refer to Figure 2 In some embodiments, the motor mounting sub-device 2 further includes a lifting assembly for driving the rotor drive assembly to rise and fall.
[0045] By adopting the above technical solution, the lifting component can be set to adjust the position of the tensioning mechanism 208 vertically. The lifting component can be used to drive the tensioning mechanism 208 to extend into and leave the inner hole of the rotor shaft. The lifting component can also be used to adjust the position of the rotor drive component to adapt to different motors 10.
[0046] As a specific example, the lifting assembly includes a first slide rail 204 fixed to a support frame 201, a first slider slidably connected to the first slide rail 204, a first sliding seat 205 fixedly connected to the first slider, and an electric lifting actuator disposed between the support frame 201 and the first sliding seat 205. The first slide rail 204 is vertically oriented, and a first drive motor 206 is fixedly mounted on the first sliding seat 205. By using the electric lifting actuator to drive the first sliding seat 205 to slide along the first slide rail 204, the first drive motor 206 can be driven to lift or lower.
[0047] Furthermore, the tensioning mechanism 208 and the output shaft of the first drive motor 206 can be connected by a coupling 207, which can compensate for the alignment error of the tensioning mechanism 208.
[0048] As a specific example, the motor support 202 is annular, and its top surface is the support surface of the motor 10, which matches the side of the motor housing facing away from the reducer. In a specific implementation, the side of the motor housing facing away from the reducer has an end face that supports the motor 10 support surface and an outer peripheral face that mates with the inner peripheral surface of the motor support 202.
[0049] As a specific example, the support frame 201 can adopt a frame structure, with a platform set on the top of the support frame 201. The motor support seat 202 and multiple motor clamping mechanisms 203 are mounted on the platform, and clearance holes are provided on the platform for the tensioning mechanism 208 to pass through.
[0050] In practical implementation, the reference base 1 can adopt a frame structure. The reference base 1 is the foundation for the installation of the motor mounting sub-device 2, the component positioning sub-device 3 and the pressing sub-device 4. The assembly process of the reducer of the electric drive system is completed on this reference base 1.
[0051] Please refer to Figure 3 In some embodiments, the component positioning sub-device 3 includes a base plate 301 disposed on the reference base 1 and a plurality of component positioning parts 302 disposed on the base plate 301, and at least one component positioning part 302 is provided with a positioning pin 303 for positioning the circumferential position of the component to be assembled.
[0052] By adopting the above technical solution and setting the positioning pin 303, it is helpful to ensure the circumferential position of the components to be assembled, which helps to ensure assembly quality and reduce assembly damage.
[0053] In practical implementation, taking into account the structural characteristics of primary component 6, secondary component 7, tertiary component 8 and output component 9, the component positioning part 302 usually adopts a ring-shaped part, which is provided with a ring surface and a circumferential surface for supporting and positioning the component to be assembled.
[0054] Please refer to Figure 4The primary component 6, the secondary component 7, the tertiary component 8, and the output component 9 can be positioned on the corresponding component positioning part 302.
[0055] In some embodiments, the pressing sub-device 4 includes a gripping mechanism 402 and a linear actuator 401 for driving the gripping mechanism 402 to move up and down. The linear actuator 401 is mounted on the base 1 via a translation mechanism 5, which is used to drive the pressing sub-device 4 to translate between a gripping position and a pressing position. When the pressing sub-device 4 is in the gripping position, it is located above the component positioning sub-device 3. When the pressing sub-device 4 is in the pressing position, it is located above the motor mounting sub-device 2.
[0056] The above technical solution enables automated assembly, which helps to ensure assembly quality and efficiency.
[0057] Please refer to Figure 5 In specific implementation, the linear actuator 401 is fixedly connected to the mounting base 403. The linear actuator 401 can be installed on the translation mechanism 5 through the mounting base 403, which can realize the movement of the pressing sub-device 4 at any position within the specified range.
[0058] The function of the gripping mechanism 402 is to move the components to be assembled from the component positioning part 302 to the assembly position to complete the assembly of each component. The gripping mechanism 402 can be an electrically driven mechanical gripping mechanism 402. The multiple grippers of the mechanical gripping mechanism 402 can controllably grip and release items. By using the multiple grippers of the mechanical gripping mechanism 402 to grip the components to be assembled, the mechanical gripping mechanism 402 can be used to grip the assembly of products of different sizes.
[0059] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the translation mechanism 5 disclosed in an embodiment of this application. As a specific example, the translation mechanism 5 includes a second slide rail 501 extending in the left-right direction, a second slider slidably connected to the second slide rail 501, a second sliding seat 502 fixedly connected to the second slider, a first ball screw mechanism 503, a second drive motor 504, a third slide rail 505 extending in the front-back direction, a third slider 506 slidably connected to the third slide rail 505, a second ball screw mechanism 507, and a third drive motor 508.
[0060] The nut of the first ball screw mechanism 503 is connected to the second slider. The second drive motor 504 is mounted on the reference base 1 and is connected to the lead screw of the first ball screw mechanism 503. The second drive motor 504 can drive the lead screw of the first ball screw mechanism 503 to rotate, thereby driving the second sliding seat 502 to move left and right. The nut of the second ball screw mechanism 507 is connected to the third slider 506. The mounting base 403 of the linear actuator 401 is fixedly connected to the third slider 506. The third drive motor 508 is mounted on the mounting base 403 and is connected to the lead screw of the second ball screw mechanism 507. The third drive motor 508 can drive the lead screw of the second ball screw mechanism 507 to rotate, thereby driving the mounting base 403 to move back and forth. Using the above technical solution, the translation mechanism 5 can move arbitrarily in the left-right and back-forward directions.
[0061] In some embodiments, the pressing sub-device 4 further includes a sensor for detecting the pressing force.
[0062] By adopting the above technical solution, the pressing force is monitored in real time by a sensor. When the pressing force exceeds the preset threshold, the assembly can be stopped, which can prevent damage to the electric drive system components.
[0063] In practical implementation, the sensor can be installed inside the linear actuator 401. The linear actuator 401 can be a servo electric cylinder with a force sensor. The linear actuator 401 is used to drive the gripping mechanism 402 to move up and down and control the pressing force of the component to be assembled. It can complete the assembly of the component to be assembled at different heights and can avoid defects such as collisions and cracks between reducer parts due to excessive pressure.
[0064] Please refer to Figures 7 to 9 The translation mechanism 5 can drive the pressing sub-device 4 to translate between the gripping position and the pressing position; when the pressing sub-device 4 is in the gripping position, the pressing sub-device 4 is above the component positioning sub-device 3, and the pressing sub-device 4 can drive the gripping mechanism 402 to lift and lower to grip the component to be assembled; when the pressing sub-device 4 is in the pressing position, the pressing sub-device 4 is above the motor mounting sub-device 2, and the pressing sub-device 4 can drive the gripping mechanism 402 to lift and lower to press the component to be assembled into the motor housing.
[0065] In some embodiments, the reference base 1 is a frame-like structure with an open upper side.
[0066] Using the above technical solution, the frame-like reference base 1 is easy to implement. The upper side of the reference base 1 is open, which facilitates the hoisting of the motor and the components to be assembled.
[0067] In practice, both the motor mounting sub-device and the component positioning sub-device are located below the opening, while the press-fitting sub-device is suspended at the opening.
[0068] Please refer to Figures 10 to 14 In some embodiments, the multiple components to be assembled include a primary component 6, a secondary component 7, a tertiary component 8, and an output component 9; the primary component 6 includes a first planetary carrier 601 and a plurality of first planetary gears 602 mounted on the first planetary carrier 601, the first planetary carrier 601 being used to connect with the rotor shaft of the motor 10; the secondary component 7 includes a first gear ring 701 and a second gear ring 702 connected to each other, the first gear ring 701 being used to mesh with the plurality of first planetary gears 602; the tertiary component 8 includes a second planetary carrier 801 and a plurality of second planetary gears 802 mounted on the second planetary carrier 801, the plurality of second planetary gears 802 being used to mesh with the second gear ring 702; the output component 9 includes a reducer housing 902 and a third gear ring 901 mounted in the reducer housing 902, the third gear ring 901 being used to mesh with the plurality of second planetary gears 802, the reducer housing 902 being used to connect with the motor housing of the motor 10.
[0069] By adopting the above technical solution and making reasonable use of the structural characteristics of the reducer in the coaxial electric drive system, the reducer components are divided into four parts for assembly, which helps to improve assembly efficiency and provides a basis for the assembly of the electric drive system reducer by the electric drive reducer assembly device.
[0070] In practical implementation, the first planetary carrier 601 is connected to the rotor shaft of the motor 10 via a spline. The power output by the motor 10 of the electric drive system is transmitted to the first ring gear 701 via the first planetary gear 602 on the first planetary carrier 601, and then to the second planetary gear 802 via the second ring gear 702. Finally, the power is transmitted to the third ring gear 901 via the second planetary gear 802, and the third ring gear 901 transmits the power to the wheels via a power output component.
[0071] Please refer to Figure 15 , Figure 15 This is a flowchart of an electric drive reducer assembly method disclosed in an embodiment of this application. In some embodiments, this application also provides an electric drive reducer assembly method, employing the electric drive reducer assembly device described in any of the above claims, the electric drive reducer assembly method comprising the following steps: S100: Install the motor 10 of the electric drive system to the motor mounting sub-device 2, so that the rotor drive assembly is connected to the rotor shaft of the motor 10. S200: Position and install multiple components to be assembled from the reducer of the electric drive system to the multiple component positioning part 302; S300: Control the pressing sub-device 4 to sequentially grab and press multiple components to be assembled.
[0072] By adopting the above technical solution, the assembly of the reducer of the coaxial electric drive system can be realized by using the electric drive reducer assembly device, which can improve the assembly quality and assembly efficiency of the coaxial electric drive reducer.
[0073] In some embodiments, the plurality of components to be assembled includes a primary component 6, a secondary component 7, a tertiary component 8, and an output component 9; the primary component 6 includes a first planetary carrier 601 and a plurality of first planetary gears 602 mounted on the first planetary carrier 601, the first planetary carrier 601 being used to connect with the rotor shaft of the motor 10; the secondary component 7 includes a first gear ring 701 and a second gear ring 702 connected to each other, the first gear ring 701 being used to mesh with the plurality of first planetary gears 602; the tertiary component 8 includes a second planetary carrier 801 and a plurality of second planetary gears 802 mounted on the second planetary carrier 801, the plurality of second planetary gears 802 being used to mesh with the second gear ring 702; the output component 9 includes a reducer housing 902 and a third gear ring 901 mounted in the reducer housing 902, the third gear ring 901 being used to mesh with the plurality of second planetary gears 802, the reducer housing 902 being used to connect with the motor housing of the motor 10; The control and pressing sub-device 4 sequentially grips and presses multiple components to be assembled, including the following steps: Control the pressing sub-device 4 to grip and press the primary component 6; Measure the gap between primary component 6 and the motor housing of motor 10, and select and install axial clearance adjustment shims according to the gap; Control the pressing sub-device 4 to grip and press the secondary component 7; Control the pressing sub-device 4 to grip and press the three-stage component 8; Control the pressing sub-device 4 and the pressing output component 9.
[0074] By adopting the above technical solution and making reasonable use of the structural characteristics of the reducer in the coaxial electric drive system, the reducer components are divided into four parts for assembly, and the assembly steps are set in a reasonable manner, which helps to improve assembly accuracy and assembly efficiency.
[0075] In practical implementation, a controller, such as a PLC, industrial PC, or motion controller, can be used to control the actions of each actuator in the electric drive reducer assembly device. The controller can issue commands to the motor clamping mechanism 203, lifting assembly, and first drive motor 206 of the motor mounting sub-device 2 according to preset assembly programs and parameters to complete the fixing of the electric drive system motor 10 and the rotation drive of the rotor shaft. The controller issues commands to the second drive motor 504, third drive motor 508, linear actuator 401, and gripping mechanism 402 to control the pressing sub-device 4 to move precisely to the gripping or pressing position and execute the gripping, lifting, and pressing actions of the component to be assembled. Simultaneously, the controller can also receive and process real-time pressing force data fed back from sensors in the pressing sub-device 4, realizing closed-loop control and overload protection of the pressing process. Through unified scheduling and precise control by the controller, the electric drive reducer assembly device can achieve fully automatic, high-precision, and high-efficiency assembly operations.
[0076] As a specific example, the assembly method of an electric drive reducer includes the following steps: The motor 10 of the electric drive system is placed on the motor mounting sub-device 2, and the motor clamping mechanism 203 is controlled by the controller to clamp the motor 10 on the motor mounting sub-device 2. The lifting assembly is raised and lowered by the controller, and the tensioning mechanism 208 is inserted into the inner hole of the rotor shaft of the motor 10. The tensioning mechanism 208 is opened by the controller, so that the tensioning mechanism 208 is tightly connected with the rotor shaft, which facilitates the subsequent rotation of the rotor of the motor 10. Multiple components to be assembled are placed on the component positioning sub-device 3, and arranged in the order of primary component 6, secondary component 7, tertiary component 8 and output component 9 according to the positioning requirements. The controller controls the pressing sub-device 4 to complete the assembly of the first-level component 6 according to the preset program; Using a dimensional measuring mechanism, measure the gap between primary component 6 and the motor housing. According to the axial gap standard of the reducer, select and assemble the corresponding axial gap adjusting shims. The controller controls the press-fitting sub-device 4 to complete the assembly of the secondary component 7, the tertiary component 8 and the output component 9 in sequence according to a predetermined program.
[0077] More specifically, a gantry crane or a robotic arm can be used to place the motor 10 onto the motor mounting sub-device 2. A gantry crane or a robotic arm can be used to place multiple components to be assembled onto the component positioning sub-device 3. A gantry crane or a robotic arm can be used to remove the assembled product from the motor mounting sub-device 2 and place it in a designated area.
[0078] More specifically, there are no angular restrictions between the primary component 6 and the secondary component 7 and the motor 10; they only need to be assembled coaxially. Therefore, the component positioning parts 302 of the primary component 6 and the secondary component 7 only need to restrict their position, not their angle. When the tertiary component 8 and the output component 9 are assembled with the motor 10, there are angular restrictions. Specifically, the tertiary component 8 and the component positioning part 302 are angularly restricted through process positioning pin holes. The output component 9 and the component positioning part 302 are angularly restricted using the positioning pin holes used in the assembly of the output component 9 and the motor 10.
[0079] Taking the assembly process of the third-level component 8 as an example, the process is described in detail. The controller controls the pressing sub-device 4 to move above the third-level component 8, then controls the gripping mechanism 402 to move downward to fit against the third-level component 8, and then controls the gripping mechanism 402 to clamp the third-level component 8 and return to the assembly position.
[0080] The controller controls the first drive motor 206 in the motor mounting sub-device 2 to rotate. The set speed is usually ≤30rpm. After the speed reaches the set value, the controller controls the gripping mechanism 402 to move downward to complete the gear engagement. At this time, the operating speed of the gripping mechanism 402 is set to ≤0.5mm / s, and the pressing force threshold is 20N. After the three-stage component 8 is assembled in place, the gripping mechanism 402 resets.
[0081] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application still fall within the scope of this application.
[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics incorporated in that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
Claims
1. An electric drive decelerator assembly apparatus, characterized by, The electric drive reducer assembly device is suitable for assembling a reducer of a coaxial electric drive system, and comprises a reference seat (1), a motor mounting sub-device (2), an assembly positioning sub-device (3), and a press-fitting sub-device (4). The motor mounting sub-device (2) is arranged on the reference seat (1), and is provided with a positioning and mounting assembly and a rotor driving assembly; the positioning and mounting assembly is used for supporting and fixing a motor (10) of the electric drive system; the rotor driving assembly can be connected with a rotor shaft of the motor (10) and drive the rotor shaft to rotate. The assembly positioning sub-device (3) is arranged on the reference seat (1), and is provided with a plurality of assembly positioning portions (302); the plurality of assembly positioning portions (302) are used for positioning a plurality of components to be assembled of the reducer. The press-fitting sub-device (4) is arranged on the reference seat (1), and is used for grabbing and press-fitting the plurality of components to be assembled.
2. The electric drive reducer assembly of claim 1, wherein, The positioning and mounting assembly comprises a support frame (201), a motor support seat (202) arranged on the top of the support frame (201), and a motor pressing mechanism (203) arranged on the periphery of the motor support seat (202); the motor pressing mechanism (203) is used for pressing the motor (10) on the motor support seat (202).
3. The electric drive reducer assembly of claim 1, wherein, The rotor driving assembly comprises a tensioning mechanism (208) used for connecting with the rotor shaft and a first driving motor (206) used for driving the tensioning mechanism (208) to rotate.
4. The electric drive reducer assembly of claim 3, wherein, The motor mounting sub-device (2) further comprises a lifting assembly used for driving the rotor driving assembly to lift.
5. The electric drive reducer assembly of claim 1, wherein, The assembly positioning sub-device (3) comprises a bottom plate (301) arranged on the reference seat (1) and a plurality of assembly positioning portions (302) arranged on the bottom plate (301); at least one assembly positioning portion (302) is provided with a positioning pin (303) used for positioning the circumferential position of the component to be assembled.
6. The electric drive reducer assembly of claim 1, wherein, The press-fitting sub-device (4) comprises a grabbing mechanism (402) and a linear actuator (401) used for driving the grabbing mechanism (402) to lift; the linear actuator (401) is mounted on the reference seat (1) through a translation mechanism (5); the translation mechanism (5) is used for driving the press-fitting sub-device (4) to translate between a grabbing position and a press-fitting position; when the press-fitting sub-device (4) is located at the grabbing position, the press-fitting sub-device (4) is located above the assembly positioning sub-device (3); when the press-fitting sub-device (4) is located at the press-fitting position, the press-fitting sub-device (4) is located above the motor mounting sub-device (2).
7. The electric drive reducer assembly of claim 6, wherein, The press-fitting sub-device (4) further comprises a sensor used for detecting a press-fitting force.
8. The electric drive reducer assembly of claim 1, wherein, The reference seat (1) is a frame-shaped structure with an open top.
9. An electric drive decelerator assembly method, characterized by, The electric drive reducer assembly device of any one of claims 1-8, the electric drive reducer assembly method comprises the following steps: The motor (10) of the electric drive system is installed to the motor installation sub-device (2), the rotor driving assembly is connected with the rotor shaft of the motor (10), and the plurality of assembly positioning parts (302) are positioned and installed to the plurality of assembly positioning parts (302). The pressing sub-device (4) is controlled to sequentially grab and press the plurality of assembly positioning parts (302).
10. The electric drive decelerator assembly method of claim 9, wherein, The plurality of assembly positioning parts (302) include a primary assembly (6), a secondary assembly (7), a tertiary assembly (8), and an output assembly (9); the primary assembly (6) includes a first planetary carrier (601) and a plurality of first planetary gears (602) installed on the first planetary carrier (601), and the first planetary carrier (601) is used for being connected with the rotor shaft of the motor (10); the secondary assembly (7) includes a first ring gear (701) and a second ring gear (702) connected with each other, and the first ring gear (701) is used for being meshed with the plurality of first planetary gears (602); the tertiary assembly (8) includes a second planetary carrier (801) and a plurality of second planetary gears (802) installed on the second planetary carrier (801), and the plurality of second planetary gears (802) are used for being meshed with the second ring gear (702); and the output assembly (9) includes a reducer housing (902) and a third ring gear (901) installed in the reducer housing (902), and the third ring gear (901) is used for being meshed with the plurality of second planetary gears (802), and the reducer housing (902) is used for being connected with the motor housing of the motor (10). The control of the pressing sub-device (4) to sequentially grab and press the plurality of assembly positioning parts (302) includes the following steps: The pressing sub-device (4) is controlled to grab and press the primary assembly (6); The gap between the primary assembly (6) and the motor housing of the motor (10) is measured, and an axial gap adjusting gasket is selected and installed according to the gap; The pressing sub-device (4) is controlled to grab and press the secondary assembly (7); The pressing sub-device (4) is controlled to grab and press the tertiary assembly (8); The pressing sub-device (4) is controlled to grab and press the output assembly (9).