Driving wheel integrated motor for AGV

Abstract

The utility model discloses a driving wheel integrated motor for an AGV, which comprises a wheel-side speed reducer, an AC servo motor and a driving control unit, the input end of the wheel-side speed reducer is in driving connection with the output end of the AC servo motor, the mounting surface of the wheel-side speed reducer is provided with a positioning notch, and the driving control unit is connected with the AC servo motor. A positioning notch is formed in the rear end cover, the positioning notch and an installation flange of the alternating current servo motor are installed in a positioning mode, the driving control unit is integrally installed on the rear end cover, a rotary induction magnetic bead of the driving control unit is installed at the tail end of a rotor shaft of the alternating current servo motor, and a motor rear cover is installed on the rear end cover. And the driving control unit is packaged in the motor rear cover. The wheel-side speed reducer, the alternating-current servo motor and the driving control unit are integrated into a whole, the space layout is small, the structure is compact, the cost is low, and the performance is good.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and specifically relates to an integrated motor for drive wheels of AGVs. Background Technology

[0002] AGV (Automated Guided Vehicle) is a type of mobile robot and an important piece of equipment in modern industrial logistics systems. It is mainly used for storing and transporting various materials and provides an important guarantee for the flexibility, integration and high efficiency of the system. Among them, the control of the drive wheel motor of the AGV is one of its key technologies.

[0003] There are two common AC servo motor configurations on the market: one is to equip a separate drive control unit and wheel-side reducer, and the other is to use an external drive in conjunction with the wheel-side reducer and AC servo motor. However, configuring these two components separately occupies a significant amount of space, which may limit the design and layout flexibility of AGVs with limited space. Furthermore, for precise motion control, the servo motor and reducer need to work closely together. Improper synchronization and coordination can affect the AGV's motion accuracy and stability. In some cases, the motor's peak characteristics cause it to stop outputting peak torque after exceeding the peak torque base speed point, instead reducing torque output. This prevents the motor from consistently operating in its high-efficiency range, thus reducing motor efficiency. These factors can limit the performance, stability, and cost-effectiveness of AGVs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an integrated motor that integrates a wheel-side reducer, an AC servo motor, and a drive control unit into one unit, resulting in a small space layout, compact structure, low cost, and good performance.

[0005] The main technical solution adopted in this utility model is as follows:

[0006] An integrated drive wheel motor for AGVs includes a wheel-side reducer, an AC servo motor, and a drive control unit. The input end of the wheel-side reducer is driven and connected to the output end of the AC servo motor. A positioning slot is formed on the mounting surface of the wheel-side reducer, and the positioning slot is positioned and installed with the mounting flange of the AC servo motor. The drive control unit is integrated and installed on a rear end cover, and the rotation sensing magnetic bead of the drive control unit is installed at the tail end of the rotor shaft of the AC servo motor. A motor rear cover is installed on the rear end cover, which encapsulates the drive control unit.

[0007] Preferably, the wheel-side reducer includes a reducer, a wheel hub, and a rubber-coated wheel. The wheel hub is fitted onto the outer periphery of the planetary gearbox of the reducer and is fixedly connected by a number of locking screws. The rubber-coated wheel is integrally injection molded on the outer periphery of the wheel hub.

[0008] Preferably, a magnetic bead holder is installed at the tail end of the rotor shaft of the AC servo motor, and a through hole is opened on the rear end cover for the magnetic bead holder to pass through. The rotation sensing magnetic bead of the drive control unit is installed on the magnetic bead holder, and the rotation sensing magnetic bead and the magnetic sensing element of the drive control unit work together in mutual induction.

[0009] Preferably, a mounting cavity is formed between the motor rear cover and the rear end cover, and a fixed bracket is provided in the mounting cavity, on which the drive control unit is mounted.

[0010] Preferably, the AC servo motor is a low-voltage AC servo motor.

[0011] Preferably, the front mounting surface of the AC servo motor is locked and fixed to the wheel-side reducer by screws.

[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 the AC servo motor, drive control unit and wheel-side reducer into one unit, which reduces many intermediate connecting parts, helps to improve installation accuracy, ensures that the installation position of the device is controllable, thereby further enhancing the speed and torque control capability, making the whole system more flexible and reliable, and having better high-speed performance.

[0014] (2) The integrated motor design of this utility model reduces intermediate connecting parts, which can improve the overall structural strength, enhance the motor's overload resistance, and enable it to withstand three times the rated overload capacity instantly. It also makes the entire motor system have the advantages of low noise, small space layout, compact structure, and low cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0016] Figure 2 This is the left view of Example 1;

[0017] Figure 3 This is a cross-sectional structural diagram of Example 1;

[0018] Figure 4 This is a cross-sectional schematic diagram of the wheel-side reducer in Example 1;

[0019] Figure 5This is a schematic diagram of the drive control unit in Example 1;

[0020] In the diagram: wheel-side reducer 1, positioning slot 1-1, reducer 1-2, planetary gearbox 1-21, wheel hub 1-3, rubber-coated wheel 1-4, locking screw 1-5, AC servo motor 2, mounting flange 2-1, rear end cover 2-2, rotor shaft 2-3, motor rear cover 2-4, mounting cavity 2-5, fixing bracket 2-6, screw 2-7, magnetic bead seat 2-8, drive control unit 3, rotation induction magnetic bead 3-1, magnetic induction element 3-2. Detailed Implementation

[0021] 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

[0022] like Figure 1-3 As shown, an integrated drive wheel motor for AGV includes a wheel-side reducer 1, an AC servo motor 2, and a drive control unit 3. The input end of the wheel-side reducer 1 is driven and connected to the output end of the AC servo motor 2. A positioning slot 1-1 is opened on the mounting surface of the wheel-side reducer 1, and the positioning slot 1-1 is positioned and installed with the mounting flange 2-1 of the AC servo motor 2. The drive control unit 3 is integrated and installed on the rear end cover 2-2, and the rotation sensing magnetic bead 3-1 of the drive control unit 3 is installed at the tail end of the rotor shaft 2-3 of the AC servo motor 2. A motor rear cover 2-4 is installed on the rear end cover 2-2, and the drive control unit 3 is encapsulated inside the motor rear cover 2-4.

[0023] In this embodiment 1, as Figure 4 As shown, the wheel-side reducer 1 includes a reducer 1-2, a wheel hub 1-3, and a rubber-coated wheel 1-4. The wheel hub 1-3 is fitted and installed on the outer periphery of the planetary gearbox 1-21 of the reducer 1-2 and is fixedly connected by several locking screws 1-5. The rubber-coated wheel 1-4 is integrally injection molded on the outer periphery of the wheel hub 1-3.

[0024] In this embodiment 1, as Figure 5As shown, a magnetic bead holder 2-8 is installed at the tail end of the rotor shaft 2-3 of the AC servo motor 2. A through hole is opened on the rear end cover 2-2 for the magnetic bead holder to pass through. The rotation sensing magnetic bead 3-1 of the drive control unit 3 is installed on the magnetic bead holder 2-8, and the rotation sensing magnetic bead and the magnetic sensing element 3-2 of the drive control unit 3 work together in mutual sensing.

[0025] In this embodiment 1, a mounting cavity 2-5 is formed between the motor rear cover 2-4 and the rear end cover 2-2. A fixed bracket 2-6 is provided in the mounting cavity 2-5, and the drive control unit 3 is mounted on the fixed bracket 2-6.

[0026] In this embodiment 1, the AC servo motor is a low-voltage AC servo motor.

[0027] In this embodiment 1, the front mounting surface of the AC servo motor 2 is locked and fixed to the wheel-side reducer 1 by screws 2-7.

[0028] In this utility model, the drive control unit 3 has integrated multiple drive control elements, and all existing drive modules are applicable. This is a conventional technical means, so it is not described in detail.

[0029] The installation method of this utility model is as follows:

[0030] The drive control unit 3 rotates the induction magnet 3-1 and is mounted on the rotor shaft 2-3. The control part of the drive control unit 3 is fixed to the rear end cover 2-2 by screws via the fixing bracket 2-6. The motor rear cover 2-4 is mounted on the rear end cover 2-2, encapsulating the drive control unit 3 within the mounting cavity 2-5. Generally, the motor rear cover has a wire hole for passing the motor leads.

[0031] Then, the output end of the AC servo motor 2 is connected to the input end of the wheel-side reducer, and the AC servo motor 2 is positioned and centered by the positioning slot 1-1 and the mounting flange 2-3 of the AC servo motor 2. The AC servo motor 2 (including the drive control unit 3) is then locked and fixed to the wheel-side reducer 1 by screws 2-7.

[0032] 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 drive wheel motor for AGVs, characterized in that, The device includes a wheel-side reducer, an AC servo motor, and a drive control unit. The input end of the wheel-side reducer is driven and connected to the output end of the AC servo motor. A positioning slot is provided on the mounting surface of the wheel-side reducer, and the positioning slot is positioned and installed with the mounting flange of the AC servo motor. The drive control unit is integrated and installed on the rear end cover, and the rotation sensing magnetic bead of the drive control unit is installed at the tail end of the rotor shaft of the AC servo motor. A motor rear cover is installed on the rear end cover, which encapsulates the drive control unit.

2. The integrated drive wheel motor for an AGV according to claim 1, characterized in that, The wheel-side reducer includes a reducer, a wheel hub, and a rubber-coated wheel. The wheel hub is fitted and installed on the outer periphery of the planetary gearbox of the reducer and is fixedly connected by several locking screws. The rubber-coated wheel is integrally injection molded on the outer periphery of the wheel hub.

3. The integrated drive wheel motor for an AGV according to claim 1, characterized in that, The rotor shaft of the AC servo motor is equipped with a magnetic bead holder at its tail end. The rear end cover has a through hole for the magnetic bead holder to pass through. The rotation sensing magnetic bead of the drive control unit is installed on the magnetic bead holder, and the rotation sensing magnetic bead and the magnetic sensing element of the drive control unit work together by mutual induction.

4. The integrated drive wheel motor for an AGV according to claim 1, characterized in that, A mounting cavity is formed between the rear cover of the motor and the rear end cover. A fixed bracket is provided in the mounting cavity, and the drive control unit is mounted on the fixed bracket.

5. The integrated drive wheel motor for an AGV according to claim 1, characterized in that, The AC servo motor is a low-voltage AC servo motor.

6. The integrated drive wheel motor for an AGV according to claim 1, characterized in that, The front mounting surface of the AC servo motor is locked and fixed to the wheel-side reducer with screws.

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