Integrated double-wheel servo motor for AGV
By integrating two sets of wheel-side reducers onto the same drive motor, the problems of low space utilization and high production costs in existing AGV designs are solved, achieving a compact structure, reduced costs, and improved motion performance.
Patent Information
- Application Number
- CN202423165895.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-22
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-22
AI Technical Summary
In existing AGV designs, each wheel-side reducer requires a separate drive motor, resulting in low space utilization efficiency, high production costs, and complex and difficult-to-precise installation.
By integrating two sets of wheel-side reducers onto the same drive motor, and using a hollow encoder in conjunction with a ring magnet to achieve dual output shaft drive, the structure is simplified and the cost is reduced.
It improves space utilization, reduces production costs, and enhances the flexibility and mobility of AGVs.
Smart Images
Figure CN223942545U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of motor technology, and specifically relates to an integrated dual-wheel servo motor for AGVs. Background Technology
[0002] AGV stands for Automated Guided Vehicle, also known as Automated Guided Transport Vehicle or Automated Guided Transport Vehicle. It is a type of unmanned short-distance transportation vehicle. An AGV typically consists of a chassis, frame, shell, controller, battery mounting bracket, etc. The vehicle body comprises the chassis, frame, shell, control room, and corresponding mechanical and electrical structures.
[0003] However, this design is not ideal in terms of space utilization efficiency, and because each wheel-side reducer requires a separate drive motor, it is difficult to reduce the production cost of the AGV. Furthermore, after each wheel-side reducer and drive motor is installed, complex adjustments are required, which not only makes the installation process cumbersome but also makes it difficult to guarantee installation accuracy. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an integrated dual-wheel servo motor for AGVs, which integrates two sets of wheel-side reducers onto the same drive motor, simplifying the overall structure, improving space utilization, and reducing production costs.
[0005] The main technical solution adopted in this utility model is as follows:
[0006] An integrated dual-wheel servo motor for AGVs includes a wheel-side reducer I, a wheel-side reducer II, a dual-axis servo motor, a ring magnet, and a hollow encoder. The dual-axis servo motor includes dual output shafts, both ends of which penetrate the motor housing along their axes. The wheel-side reducer I is driven to one end of the dual output shaft I, and the wheel-side reducer II is driven to one end of the dual output shaft II. The ring magnet is positioned and mounted on one end of the dual output shaft I. The hollow encoder is mounted on the end face of the motor housing, and the hollow encoder is correspondingly positioned to the ring magnet.
[0007] Preferably, the dual-axis servo motor further includes a motor housing, a rotor assembly, a stator assembly, a brake assembly, bearing I, and bearing II. The rotor assembly, stator assembly, and brake assembly are all installed inside the motor housing. The rotor assembly is mounted on the dual output shafts, and the stator assembly is mounted on the motor housing. The stator assembly and the rotor assembly cooperate with each other. The brake assembly is mounted on the rear end cover of the motor housing and cooperates with the dual output shafts for braking. Bearing I is mounted on the motor housing, and the end of the dual output shaft I passes through bearing I and is installed in cooperation with bearing I. Bearing II is mounted on the rear end cover of the motor housing, and the end of the dual output shaft II passes through bearing II and is installed in cooperation with bearing II.
[0008] Preferably, a retaining ring is provided on the dual output shaft, and the retaining ring is located between the bearing II and the brake assembly to limit the bearing II.
[0009] Preferably, a wave-shaped washer is fitted onto the dual output shaft, and the wave-shaped washer is located in the installation gap between bearing I and the motor housing to provide preload.
[0010] Preferably, the wheel-side reducer I and the wheel-side reducer II have the same structure. The wheel-side reducer I has a positioning stop I on its mounting surface, which is fitted with a positioning groove on the front end cover of the motor housing. The wheel-side reducer II has a positioning stop II on its mounting surface, which is fitted with a positioning groove on the rear end cover of the motor housing.
[0011] Preferably, bearing I and bearing II are the same type of bearing with the same dimensions.
[0012] Beneficial effects: This utility model provides an integrated motor for the drive wheel of an AGV, which has the following advantages:
[0013] (1) This utility model integrates two sets of wheel-side reducers on the same drive motor. By using a hollow encoder and a ring magnet, the dual output shafts can drive the wheel-side reducers at both ends simultaneously, which optimizes the overall structure, makes the overall structure compact, improves space utilization, enhances practicality, and saves a set of motors. This not only reduces the production cost of AGV, but also achieves the purpose of AGV weight reduction, making AGV more flexible and improving the motion performance of AGV.
[0014] (2) By reducing the use of one set of motors, this utility model not only reduces the production cost of AGV, but also reduces the overall weight of AGV, thereby enhancing the flexibility of AGV and improving its motion performance. Attached Figure Description
[0015] Figure 1This is a cross-sectional schematic diagram of Example 1;
[0016] Figure 2 This is a schematic cross-sectional view of the wheel-side reducer in Example 1;
[0017] In the diagram: Wheel-side reducer I1, Positioning stop I1-1, Wheel-side reducer II2, Dual-axis servo motor 3, Dual output shaft 3-1, Motor housing 3-2, Rotor assembly 3-3, Stator assembly 3-4, Brake assembly 3-5, Bearing I 3-6, Bearing II 3-7, Rear end cover 3-8, Front end cover 3-9, Positioning groove 3-10, Ring magnet 4, Hollow encoder 5, Snap ring 6, Waveform washer 7. Detailed Implementation
[0018] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example 1
[0019] An integrated dual-wheel servo motor for AGVs, such as Figure 1 As shown, the device includes a wheel-side reducer I1, a wheel-side reducer II2, a dual-axis servo motor 3, a ring magnet 4, and a hollow encoder 5. The dual-axis servo motor 3 includes dual output shafts 3-1, both ends of which penetrate the motor housing 3-2 along their axes. The wheel-side reducer I1 is driven to the I end of the dual output shaft 3-1, and the wheel-side reducer II2 is driven to the II end of the dual output shaft 3-1. The ring magnet 4 is positioned and installed on the I end of the dual output shaft 3-1. The hollow encoder 5 is installed on the end face of the motor housing 3-2, and the hollow encoder 5 is correspondingly arranged with the ring magnet 4, working together.
[0020] In this embodiment 1, the dual-axis servo motor 3 further includes a motor housing 3-2, a rotor assembly 3-3, a stator assembly 3-4, a brake assembly 3-5, bearing I 3-6, and bearing II 3-7. The rotor assembly 3-3, stator assembly 3-4, and brake assembly 3-5 are all installed inside the motor housing 3-2. The rotor assembly 3-3 is installed on the dual output shaft 3-1, and the stator assembly 3-4 is installed on the motor housing 3-2. The stator assembly 3-4 and the rotor assembly 3-3 cooperate with each other. The brake assembly 3-5 is installed on the rear end cover 3-8 of the motor housing 3-2 and cooperates with the dual output shaft 3-1 for braking. The bearing I 3-6 is installed on the motor housing 3-2. The I end of the dual output shaft 3-1 passes through the bearing I 3-6 and is installed in cooperation with the bearing I 3-6. The bearing II 3-7 is installed on the rear end cover 3-8 of the motor housing 3-2, and the II end of the dual output shaft 3-1 passes through the bearing II 3-7 and is installed in cooperation with the bearing II 3-7.
[0021] In this embodiment 1, a retaining ring 6 is provided on the dual output shaft 3-1, and the retaining ring 6 is located between the bearing II 3-7 and the brake assembly 3-5. It is used to limit the bearing II, so that one end of the bearing is axially fixed, preventing the bearing from moving on the dual output shaft 3-1 and ensuring the stability of operation.
[0022] In this embodiment 1, a wave washer 7 is sleeved on the dual output shaft 3-1, and the wave washer 7 is located in the installation gap between the bearing I 3-6 and the motor housing 3-2, which is used to provide preload and ensure the overall stability of the motor operation.
[0023] In this embodiment 1, the wheel-side reducer I1 and the wheel-side reducer II2 have the same structure, as follows: Figure 2 As shown, the mounting surface of the wheel-side reducer I1 has a positioning stop I1-1, which is fitted with the positioning groove 3-10 on the front end cover 3-9 of the motor housing 3-2. The mounting surface of the wheel-side reducer II2 has a positioning stop II, which is fitted with the positioning groove 3-10 on the rear end cover 3-8 of the motor housing 3-2.
[0024] In this embodiment 1, bearing I and bearing II are the same type of bearing with the same size, thereby ensuring the operational stability of the wheel-side reducer at both ends and avoiding the phenomenon of jumping.
[0025] In this embodiment 1, the dual-axis servo motor is a 12-slot, 10-pole servo motor.
[0026] In this utility model, the two ends of the dual output shaft 3-1 are connected to the wheel-side reducer by gears. This connection method is a conventional technology and therefore is not described in detail.
[0027] In this invention, the brake assembly is existing technology and is used to brake the rotation of the dual output shafts when the power is off.
[0028] The installation method of this utility model is as follows:
[0029] Two rubber-coated wheel-side reducers 1, two rubber-coated wheel-side reducers 2, hollow encoder; 3 dual-output shaft low-voltage servo motor;
[0030] Wheel-side reducers I1 and II2 are positioned by engaging with the positioning slots 3-10 on the end caps of the dual-axis servo motor 3 via positioning stops. Simultaneously, ends I and II of the dual output shafts 3-1 are connected to wheel-side reducers I1 and II2 respectively via gear connections and secured with screws. This completes the installation of the integrated dual-wheel drive motor quickly and easily.
[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An integrated dual-wheel servo motor for AGVs, characterized in that, The device includes a wheel-side reducer I, a wheel-side reducer II, a dual-axis servo motor, a ring magnet, and a hollow encoder. The dual-axis servo motor has two output shafts, both ends of which pass through the motor housing along their axes. The wheel-side reducer I is driven to the end of the dual output shaft I, and the wheel-side reducer II is driven to the end of the dual output shaft II. The ring magnet is positioned and installed on the end of the dual output shaft I. The hollow encoder is installed on the end face of the motor housing, and the hollow encoder is correspondingly arranged with the ring magnet.
2. The integrated dual-wheel servo motor for AGV according to claim 1, characterized in that, The dual-axis servo motor further includes a motor housing, a rotor assembly, a stator assembly, a brake assembly, bearing I, and bearing II. The rotor assembly, stator assembly, and brake assembly are all installed inside the motor housing. The rotor assembly is mounted on the dual output shafts, and the stator assembly is mounted on the motor housing. The stator assembly and the rotor assembly work in corresponding cooperation. The brake assembly is mounted on the rear end cover of the motor housing and cooperates with the dual output shafts for braking. Bearing I is mounted on the motor housing, and the end of the dual output shaft I passes through bearing I and is installed in cooperation with bearing I. Bearing II is mounted on the rear end cover of the motor housing, and the end of the dual output shaft II passes through bearing II and is installed in cooperation with bearing II.
3. The integrated dual-wheel servo motor for AGV according to claim 2, characterized in that, A retaining ring is provided on the dual output shaft, and the retaining ring is located between bearing II and the brake assembly to limit bearing II.
4. The integrated dual-wheel servo motor for AGV according to claim 1, characterized in that, A wave-shaped washer is fitted onto the dual output shaft, and the wave-shaped washer is located in the installation gap between bearing I and the motor housing to provide preload.
5. The integrated dual-wheel servo motor for AGV according to claim 1, characterized in that, The wheel-side reducer I and wheel-side reducer II have the same structure. The mounting surface of the wheel-side reducer I has a positioning stop I, which is installed in conjunction with the positioning groove on the front end cover of the motor housing. The mounting surface of the wheel-side reducer II has a positioning stop II, which is installed in conjunction with the positioning groove on the rear end cover of the motor housing.
6. The integrated dual-wheel servo motor for AGV according to claim 2, characterized in that, Bearing I and bearing II are the same type of bearing with the same dimensions.