Heat dissipation motor and automatic guide vehicle

Abstract

The invention relates to the technical field of motors, and discloses a heat dissipation motor and an automatic guide vehicle, the heat dissipation motor comprises a shell, a stator, a rotor, a main shaft and a fan, the interior of the shell is a cavity, the stator is fixed on the inner wall of the shell, the rotor is arranged in the shell and rotatably connected with the stator, the main shaft penetrates through the shell, and the rotor is fixed on the main shaft; the fan is arranged at the end, far away from the output end, in the shell, and when the motor works, the fan can output heat in the shell to the external environment, so that heat dissipation and temperature reduction in the shell are achieved, and the situation that when the motor outputs large torque, the motor is driven to rotate is avoided. The internal temperature of the motor is too high; meanwhile, as the fan works independently, when the rotating speed of the heat dissipation motor is slowed down or even the heat dissipation motor is blocked due to large load, continuous heat dissipation of the fan on the heat dissipation motor is not affected, and the heat dissipation device has the advantages of simple structure and good heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a heat dissipation motor and an automatic guided vehicle. Background Art

[0002] An Automated Guided Vehicle (AGV) is an industrial vehicle that automatically drives the loaded goods along a set route or pulls a cargo trolley to a designated location. AGVs usually use motors as their power source, which transmit power to the wheels to drive the AGV.

[0003] In the prior art, the current of the motor is positively correlated with the torque. If the motor is to output a large torque, the current needs to be increased, and the heat generation is positively correlated with the square of the current. When the heat generation is greater than the heat dissipation, the motor temperature will continue to rise until it burns out. Summary of the invention

[0004] In view of this, the present invention provides a heat dissipation motor and an automatic guided vehicle to solve the problem in the prior art that when the heat generated by the motor is greater than the heat dissipation, the temperature of the motor will continue to rise until it burns out.

[0005] In a first aspect, the present invention provides a heat dissipation motor, comprising a shell, a stator, a rotor, a main shaft and a fan, wherein the interior of the shell is a cavity, the stator is fixed on the inner wall of the shell, the rotor is arranged in the shell, the rotor is rotatably connected to the stator, the main shaft is passed through the shell, the rotor is fixed on the main shaft, the output end of the main shaft extends out of the shell, and the fan is arranged in the shell, at an end away from the output end.

[0006] Beneficial effects: The present invention arranges a fan at one end of the shell away from the output end. When the motor is working, the fan can output the heat in the shell to the external environment, thereby achieving heat dissipation and cooling in the shell, and avoiding excessive internal temperature of the motor when the motor outputs large torque; at the same time, since the fan works independently, when a large load causes the speed of the heat dissipation motor to slow down or even stall, it will not affect the fan's continuous heat dissipation of the heat dissipation motor, and has the advantages of simple structure and good heat dissipation effect.

[0007] In an optional embodiment, the heat dissipation motor also includes an inner shell, the interior of the inner shell is a cavity, the inner shell is arranged in the outer shell, a heat dissipation space is formed between the inner shell and the outer shell, the length of the inner shell is smaller than the length of the outer shell, the fan is installed in the outer shell, located at the end away from the inner shell, and the stator, rotor and main shaft are arranged in the inner shell.

[0008] Beneficial effect: The present invention forms a heat dissipation space between the inner shell and the outer shell. When the motor is working, the fan ventilates the heat dissipation space, and the air flow in the heat dissipation space takes away the heat, thereby achieving heat dissipation of the motor.

[0009] In an optional embodiment, the outer wall of the inner shell is provided with a plurality of fins, and the fins are connected to the inner wall of the outer shell.

[0010] Beneficial effect: The fins in the present invention play a role of connecting and supporting the inner shell and the outer shell. At the same time, the fins form a heat dissipation space between the inner shell and the outer shell. The fan takes away the heat by flowing air in the heat dissipation space, thereby achieving heat dissipation for the motor.

[0011] In an optional embodiment, the fins are arranged axially between the inner shell and the outer shell.

[0012] Beneficial effect: In the present invention, the fins are axially arranged between the inner shell and the outer shell, and the heat dissipation space formed extends along the axial direction of the motor, which is convenient for the fan to blow air into the heat dissipation space, thereby taking away the heat with the air flow in the heat dissipation space and realizing the heat dissipation of the motor.

[0013] In an optional implementation, the heat dissipation motor further includes a controller, which is disposed outside the housing and is electrically connected to the fan and the stator.

[0014] Beneficial effect: In the present invention, the controller controls the fan and the stator to work independently. When the motor works at a large torque, the speed decreases and the heat is serious. At this time, the fan working independently can increase the speed, thereby improving the heat dissipation effect. When the large load causes the speed of the heat dissipation motor to slow down or even stall, it does not affect the fan's continuous heat dissipation of the heat dissipation motor.

[0015] In an optional embodiment, the controller includes a main body and a heating part, the main body is electrically connected to the fan and the stator, the heating part is arranged on one side of the main body, and the heating part is connected to the outer wall of the shell.

[0016] Beneficial effect: The present invention connects the heating part of the controller with the outer wall of the shell, and the heat generated by the heating part is conducted to the shell. The heat dissipation space is cooled by a fan, so the temperature of the shell can be reduced, thereby reducing the temperature of the controller.

[0017] In an optional embodiment, a heat dissipation cavity is formed between adjacent heat-generating parts.

[0018] Beneficial effect: The heat dissipation cavity provided in the present invention can increase the heat dissipation effect of the heating part.

[0019] In an optional embodiment, the heat dissipation motor further includes end covers, which are arranged at both ends of the inner shell, and the output end of the main shaft extends out of one end cover.

[0020] In an optional implementation, the heat dissipation motor further includes a bearing, the bearing is disposed on the end cover, and the main shaft is installed in the bearing.

[0021] Beneficial effects: The present invention installs the main shaft in the bearing, which can reduce the friction of the main shaft during operation and maintain the stability of the main shaft during operation.

[0022] In a second aspect, the present invention further provides an automatic guided vehicle, comprising a vehicle body, wheels and the above-mentioned heat dissipation motor, wherein the heat dissipation motor is mounted on the vehicle body, and the wheels are connected to the heat dissipation motor.

[0023] Beneficial effects: The present invention arranges the heat dissipation motor in the vehicle body. When the motor outputs a large torque, the fan can output the heat in the outer casing to the external environment, thereby achieving heat dissipation and cooling inside the outer casing, and avoiding excessive internal temperature of the motor when the motor outputs a large torque. At the same time, since the fan works independently, when a large load causes the speed of the heat dissipation motor to slow down or even stall, it will not affect the fan's continuous heat dissipation of the heat dissipation motor, thereby ensuring the stability of the automatic guided vehicle's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a heat dissipation motor according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of an outer shell and an inner shell in a heat dissipation motor according to an embodiment of the present invention;

[0027] Figure 3 An axial cross-sectional view of a heat dissipation motor according to an embodiment of the present invention;

[0028] Figure 4 A schematic structural diagram of a heat dissipation motor from another perspective according to an embodiment of the present invention;

[0029] Figure 5 The present invention is a schematic diagram of the structure of a controller in a heat dissipation motor according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Shell;

[0032] 2. Stator;

[0033] 3. Spindle;

[0034] 4. Fan;

[0035] 5. Inner shell;

[0036] 6. Heat dissipation space;

[0037] 7. Fins;

[0038] 8. controller; 801. main body; 802. heating part; 803. heat dissipation cavity;

[0039] 9. End cap;

[0040] 10. Bearings. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0042] Combine the following Figures 1 to 5 , describing an embodiment of the present invention.

[0043] According to an embodiment of the present invention, on the one hand, Figures 1 to 4 A heat dissipation motor is provided, comprising a shell 1, a stator 2, a rotor, a main shaft 3 and a fan 4, wherein the interior of the shell 1 is a cavity, the stator 2 is fixed on the inner wall of the shell 1, the rotor is arranged in the shell 1, the rotor is rotatably connected to the stator 2, the main shaft 3 is passed through the shell 1, the rotor is fixed on the main shaft 3, the output end of the main shaft 3 extends out of the shell 1, and the fan 4 is arranged in the shell 1, at an end away from the output end.

[0044] Specifically, in this embodiment, the shape of the shell 1 is not specifically limited. To conform to the actual situation, in this embodiment, the shell 1 is a rectangular structure with a cavity inside. The length direction of the shell 1 is axial, the stator 2 is fixed in the inner wall of the shell 1, and the rotor is fixed on the main shaft 3 and rotatably arranged in the stator 2. In this embodiment, the stator 2 is a coil winding and the rotor is a magnet. When the stator 2 is energized, a rotating magnetic field is generated, which acts on the rotor to form a magneto-electrodynamic rotational torque, thereby driving the main shaft 3 to rotate. The driving end of the main shaft 3 extends out from one side of the shell 1. In this embodiment, the driving end is used to drive the wheels of the automatic guided vehicle.

[0045] In this embodiment, an installation space is provided in the housing 1 at a side away from the output end, and the fan 4 is installed in the installation space.

[0046] The present invention arranges a fan 4 at one end away from the output end in the housing 1. When the motor is working, the fan 4 can output the heat in the housing 1 to the external environment, thereby achieving heat dissipation and cooling in the housing 1, and avoiding excessive internal temperature of the motor when the motor outputs a large torque; at the same time, since the fan 4 works independently, when a large load causes the speed of the heat dissipation motor to slow down or even stall, it will not affect the continuous heat dissipation of the heat dissipation motor by the fan 4, and has the advantages of simple structure and good heat dissipation effect.

[0047] In one embodiment, Figure 2 and Figure 3 As shown, the heat dissipation motor also includes an inner shell 5, the interior of the inner shell 5 is a cavity, the inner shell 5 is arranged in the outer shell 1, a heat dissipation space 6 is formed between the inner shell 5 and the outer shell 1, the length of the inner shell 5 is smaller than the length of the outer shell 1, the fan 4 is installed in the outer shell 1, and is located at the end away from the inner shell 5, and the stator 2, the rotor and the main shaft 3 are arranged in the inner shell 5.

[0048] Specifically, in this embodiment, the inner shell 5 is a cylindrical structure with a cavity inside. The radial dimension of the inner shell 5 is smaller than the dimension of the outer shell 1, and the axial dimension of the inner shell 5 is smaller than the length of the outer shell 1. The stator 2 is fixed on the inner wall of the inner shell 5, and a heat dissipation space 6 is formed between the inner wall of the outer shell 1 and the outer wall of the inner shell 5.

[0049] In the present invention, a heat dissipation space 6 is formed between the inner shell 5 and the outer shell 1. When the motor is working, the fan 4 ventilates the heat dissipation space 6, and the air flow in the heat dissipation space 6 takes away the heat, thereby achieving heat dissipation of the motor.

[0050] In one embodiment, Figure 2 As shown, the outer wall of the inner shell 5 is provided with a plurality of fins 7 , and the fins 7 are connected to the inner wall of the outer shell 1 .

[0051] Specifically, in this embodiment, the fins 7 are circumferentially arranged between the outer wall of the inner shell 5 and the inner wall of the outer shell 1 , and the plurality of fins 7 divide the space between the inner shell 5 and the outer shell 1 into a plurality of heat dissipation spaces 6 .

[0052] In the present invention, the fins 7 play a role of connecting and supporting the inner shell 5 and the outer shell 1. At the same time, the fins 7 form a heat dissipation space 6 between the inner shell 5 and the outer shell 1. The fan 4 removes heat by flowing air in the heat dissipation space 6 to achieve heat dissipation for the motor.

[0053] In one embodiment, Figure 2 As shown, the fins 7 are arranged axially between the inner shell 5 and the outer shell 1 .

[0054] Specifically, in this embodiment, the extension direction of the fin 7 is parallel to the main axis 3 , and chamfers are provided at the connection between the fin 7 and the inner shell 5 and the outer shell 1 to reduce the compressive stress at the connection between the fin 7 and the inner shell 5 and the outer shell 1 .

[0055] In the present invention, the fins 7 are axially arranged between the inner shell 5 and the outer shell 1, and the formed heat dissipation space 6 extends along the axial direction of the motor, which is convenient for the fan 4 to blow air into the heat dissipation space 6, thereby the air flow in the heat dissipation space 6 takes away the heat and realizes the heat dissipation of the motor.

[0056] In one embodiment, Figures 3 to 5 As shown, the heat dissipation motor further includes a controller 8 , which is disposed outside the housing 1 , and is electrically connected to the fan 4 and the stator 2 .

[0057] Specifically, in this embodiment, a chip circuit board is provided in the controller 8, and the chip circuit board is electrically connected to the stator 2 and the fan 4. The chip circuit board can control the stator 2 and the fan 4 to work independently.

[0058] In the present invention, the controller 8 controls the fan 4 and the stator 2 to work independently. When the motor works at a large torque, the speed decreases and the heat is serious. At this time, the fan 4 working independently can increase the speed, thereby improving the heat dissipation effect. When the large load causes the heat dissipation motor to slow down or even stall, it does not affect the fan 4 to continue to dissipate heat for the heat dissipation motor.

[0059] In one embodiment, Figure 4 and Figure 5 As shown, the controller 8 includes a main body 801 and a heating part 802 . The main body 801 is electrically connected to the fan 4 and the stator 2 . The heating part 802 is arranged on one side of the main body 801 and connected to the outer wall of the housing 1 .

[0060] The present invention connects the heating part 802 of the controller 8 to the outer wall of the housing 1 , and the heat generated by the heating part 802 is conducted to the housing 1 . The fan 4 cools the heat dissipation space 6 , which can reduce the temperature of the housing 1 , thereby reducing the temperature of the controller 8 .

[0061] In one embodiment, Figure 4 and Figure 5 As shown, a heat dissipation cavity 803 is formed between adjacent heat-generating portions 802 .

[0062] Specifically, in this embodiment, two heating parts 802 are provided, and the two heating parts 802 are arranged in parallel on one side of the main body 801. The heating parts 802 are connected to the shell 1, and a heat dissipation cavity 803 is formed between the two heating parts 802, and the heat dissipation cavity 803 is used for heat exchange with the external environment.

[0063] In the present invention, the heat dissipation cavity 803 is provided to increase the heat dissipation effect of the heat generating portion 802 .

[0064] In one embodiment, Figure 3 As shown, the heat dissipation motor further includes an end cover 9 , which is arranged at both ends of the inner shell 5 , and the output end of the main shaft 3 extends out of one end cover 9 .

[0065] Specifically, in this embodiment, two end covers 9 are provided, which are respectively installed at the two ends of the inner shell 5. A mounting hole is opened in the middle of the end cover 9 located at the output end of the main shaft 3, and the main shaft 3 is installed in the mounting hole.

[0066] In one embodiment, Figure 3 As shown, the heat dissipation motor further includes a bearing 10 , which is disposed on the end cover 9 , and the main shaft 3 is installed in the bearing 10 .

[0067] Specifically, in this embodiment, two bearings 10 are provided. The two bearings 10 are respectively mounted on the end covers 9 , and the main shaft 3 is mounted in the bearings 10 .

[0068] The present invention installs the main shaft 3 in the bearing 10, which can reduce the friction of the main shaft 3 during operation and maintain the stability of the main shaft 3 during operation.

[0069] According to an embodiment of the present invention, on the other hand, there is also provided an automatic guided vehicle, comprising a vehicle body, wheels and the above-mentioned heat dissipation motor, wherein the heat dissipation motor is mounted on the vehicle body, and the wheels are connected to the heat dissipation motor.

[0070] Beneficial effects: The present invention arranges the heat dissipation motor in the vehicle body. When the motor outputs a large torque, the fan 4 can output the heat in the outer shell 1 to the external environment, thereby achieving heat dissipation and cooling in the outer shell 1, and avoiding the internal temperature of the motor being too high when the motor outputs a large torque; at the same time, since the fan 4 works independently, when the large load causes the heat dissipation motor to slow down or even stall, it will not affect the fan 4 to continuously dissipate heat to the heat dissipation motor, thereby ensuring the stability of the operation of the automatic guided vehicle.

[0071] Specifically, the automatic guided vehicle in this embodiment also includes a reducer, which is mounted on the vehicle body, and the output end of the heat dissipation motor main shaft 3 is connected to the reducer, and the output end of the reducer is connected to the vehicle. The power of the automatic guided vehicle comes from the heat dissipation motor, and the motor transmits the power to the wheels after being decelerated by the reducer to drive the automatic guided vehicle to move.

[0072] In this embodiment, the heat dissipation of the heat dissipation motor is effectively improved, thereby effectively increasing the available current of the heat dissipation motor, that is, increasing the working torque of the heat dissipation motor, and ensuring the operating power of the automatic guided vehicle.

[0073] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A heat dissipation motor, It is characterized in that include: A housing (1), wherein the interior of the housing (1) is a cavity; A stator (2), wherein the stator (2) is fixed on the inner wall of the housing (1); a rotor, the rotor being arranged in the housing (1) and being rotationally connected to the stator (2); A main shaft (3), the main shaft (3) is inserted into the housing (1), the rotor is fixed on the main shaft (3), and the output end of the main shaft (3) extends out of the housing (1); A fan (4), wherein the fan (4) is arranged in the housing (1) and is located at an end away from the output end.

2. The heat dissipation motor according to claim 1, It is characterized in that Also includes: An inner shell (5), the interior of the inner shell (5) is a cavity, the inner shell (5) is sleeved in the outer shell (1), a heat dissipation space (6) is formed between the inner shell (5) and the outer shell (1), the length of the inner shell (5) is less than the length of the outer shell (1), the fan (4) is installed in the outer shell (1) and is located at an end away from the inner shell (5), and the stator (2), the rotor and the main shaft (3) are arranged in the inner shell (5).

3. The heat dissipating motor according to claim 2, It is characterized in that The outer wall of the inner shell (5) is provided with a plurality of fins (7), and the fins (7) are connected to the inner wall of the outer shell (1).

4. The heat dissipating motor according to claim 3, It is characterized in that The fin (7) is arranged axially between the inner shell (5) and the outer shell (1).

5. The heat dissipating motor according to claim 1, It is characterized in that Also includes: A controller (8), wherein the controller (8) is arranged outside the housing (1), and the controller (8) is electrically connected to the fan (4) and the stator (2).

6. The heat dissipating motor according to claim 5, It is characterized in that The controller (8) comprises: A main body (801), wherein the main body (801) is electrically connected to the fan (4) and the stator (2); A heating part (802), the heating part (802) is arranged on one side of the main body (801), and the heating part (802) is connected to the outer wall of the outer shell (1).

7. The heat dissipating motor according to claim 6, It is characterized in that A heat dissipation cavity (803) is formed between adjacent heat-generating portions (802).

8. The heat dissipating motor according to claim 2, It is characterized in that Also includes: End covers (9), the end covers (9) are arranged at both ends of the inner shell (5), and the output end of the main shaft (3) extends out of one side of the end cover (9).

9. The heat dissipating motor according to claim 8, It is characterized in that Also includes: A bearing (10), wherein the bearing (10) is arranged on the end cover (9), and the main shaft (3) is installed in the bearing (10).

10. An automatic guided vehicle, It is characterized in that include: Vehicle body; wheel; The heat dissipation motor according to any one of claims 1 to 9, wherein the heat dissipation motor is mounted on the vehicle body, and the wheel is connected to the heat dissipation motor.

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