An electromagnetic drive unmanned flow vehicle system

Abstract

An electromagnetic driving unmanned logistics vehicle system relates to the technical field of logistics trolley, and the logistics vehicle system comprises a stator track unit, a mover vehicle body unit and a logistics vehicle chassis; the stator track unit is spliced by multiple standardized conductive track units, high-performance permanent magnet arrays are embedded in the middle of the track to form a regular magnetic field, and a traveling wave magnetic field is generated above the track through three-phase alternating current; the mover vehicle body unit comprises a silicon steel sheet laminated core and a three-phase winding coil, and the surface is coated with a silicon carbide protective layer; the electromagnetic coupling effect is used to realize non-contact linear motion along the track; the electromagnetic driving technology is adopted; the traditional fuel power unit is completely abandoned; zero pollution emission is realized; the modular track design supports linear, curved and cross layouts; the human cost and the maintenance difficulty are significantly reduced; the beneficial effects include clean environment protection, automation, stable and reliable operation, flexible adaptation to complex logistics scenes, and the like; and an efficient and sustainable automatic transportation scheme is provided for the logistics industry.

Description

Technical Field

[0001] This utility model relates to the field of logistics vehicle technology, and more specifically, to an electromagnetically driven unmanned logistics vehicle system. Background Technology

[0002] Driven by both the global digital wave and supply chain innovation, the logistics industry is undergoing a profound transformation from labor-intensive to technology-intensive. Currently, traditional fuel-powered logistics vehicles, as the main equipment for logistics transportation, have exposed two major pain points: First, while transporting goods, internal combustion locomotives emit large amounts of carbon dioxide, nitrogen oxides, and inhalable particulate matter into the atmosphere; second, the continuously rising labor costs have become a heavy burden on the industry's development, and problems such as fluctuations in transportation timeliness and increased management difficulty caused by driver shortages are becoming increasingly prominent.

[0003] Against this backdrop, developing a new type of logistics vehicle system is not only a key measure to break the predicament of environmental pollution and reliance on manual labor in traditional logistics vehicles, but also an inevitable choice to adapt to the trend of industrial upgrading and enhance the core competitiveness of the logistics industry. This type of logistics vehicle achieves zero fossil fuel consumption through electromagnetic force drive, cutting off the pollution chain at its source, significantly reducing labor costs and improving transportation efficiency and safety. This technological innovation will not only create significant economic benefits for logistics companies, but will also drive the entire industry towards a higher level of green, intelligent, and unmanned operation. Utility Model Content

[0004] The purpose of this invention is to provide an unmanned logistics vehicle system based on electromagnetic drive, which achieves non-contact drive through magnetic coupling between the stator track and the moving body, solving the efficiency and maintenance problems of traditional mechanical transmission and the problem of harmful gas emissions from internal combustion locomotives, while improving the flexibility of movement and the ability of multiple vehicles to cooperate.

[0005] This utility model provides an electromagnetically driven unmanned logistics vehicle system, comprising:

[0006] The stator track unit is composed of multiple standardized conductive tracks spliced ​​together, and a track groove is formed in the middle of the conductive track along the length direction. A high-performance permanent magnet array is embedded in the track groove. Slots are formed on the upper part of the inner wall of the track groove along the left and right sides. When in use, the permanent magnet array can make the conductive track generate a magnetic field.

[0007] The logistics vehicle chassis has wheels distributed on its left and right sides, and the wheels are in contact with the ground outside the conductive track. In use, the logistics vehicle chassis can travel on the conductive track by means of the wheels.

[0008] The moving body unit includes a moving part, a moving part core and a three-phase winding coil. The moving part is installed below the chassis of the logistics vehicle and is positioned opposite and in contact with the slot. Multiple moving part cores are provided and distributed inside the moving part. The three-phase winding coil is tightly wound around the moving part core.

[0009] When the conductive track is energized by the outside, the mover can be magnetically coupled to the conductive track.

[0010] Preferably, the permanent magnet array consists of multiple equidistant permanent magnets, and the permanent magnets are arranged along the length of the track.

[0011] Preferably, the shape of the stator track unit can be spliced ​​into any one of the following: straight line, curved track, or cross track.

[0012] Preferably, the moving core is formed by stacking multiple layers of silicon steel sheets, and an insulating layer is coated on the surface. At the same time, a high-temperature resistant and moisture-resistant silicon carbide composite protective layer is also coated on the surface of the moving core.

[0013] Preferably, a number of high-strength fixing screws are provided between the bottom of the conductive track and the ground or the support frame, and a number of fixing screws arranged in a linear pattern are also provided at the connection between the permanent magnet array and the conductive slide rail.

[0014] Preferably, the surface layer of the conductive track can be made of a highly conductive copper alloy material.

[0015] Preferably, the connection between the chassis and the wheels of the logistics vehicle is further provided with a suspension system, wherein the suspension system includes a fixed bracket, a suspension bracket and a shock-absorbing spring. The wheels are sequentially connected to the fixed bracket and the suspension bracket by bolts, and the wheels are locked to the suspension bracket by bolts through mounting holes on the wheel hub. The shock-absorbing spring is disposed between the fixed bracket and the suspension bracket.

[0016] Preferably, an automatic loading and unloading robot is also installed on top of the logistics vehicle chassis.

[0017] Preferably, the automated loading and unloading robot is a robotic arm.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model adopts an electromagnetic drive method, which eliminates the need to burn fossil fuels during operation, fundamentally eliminating the emission of carbon dioxide, nitrogen oxides and inhalable particulate matter, and significantly reducing environmental pollution.

[0020] 2. This invention eliminates the need for manual driving or intervention, effectively solving the problem of traditional logistics vehicles' heavy reliance on drivers. This not only reduces recruitment, training, and management costs but also avoids the risk of transportation delays or cargo damage caused by human error.

[0021] 3. This utility model uses a fixed slot to significantly reduce mechanical friction loss and extend the service life of the equipment. The stator track adopts a modular design, so only a single track unit needs to be replaced when partial damage occurs, making maintenance convenient and inexpensive.

[0022] 4. The stator track of this utility model supports straight, curved and intersecting layouts, and can be flexibly laid according to the storage space to adapt to diverse logistics path requirements. Attached image description:

[0023] Figure 1 This is a schematic diagram of an electromagnetically driven unmanned logistics vehicle system according to the present invention.

[0024] Figure 2 This is a diagram showing the form and state of the vehicle body at the conductive track.

[0025] Figure 3 This is a top view of the permanent magnet array mounted on the conductive track.

[0026] Figure 4 This is a diagram showing the installation structure of the mover, mover core, and three-phase winding coils.

[0027] Figures 1-4 In the middle: Moving element track unit: 1-Conductive track; 2-Rail groove; 3-Permanent magnet array; 4-Card slot; 5-High-strength fixing screw; 6-Fixing screw; 7-Logistics vehicle chassis; 8-Wheel; 9-Suspension system; 10-Fixing bracket; 11-Suspension bracket; 12-Shock-absorbing spring; Moving element body unit: 13-Moving element; 14-Moving element core; 15-Three-phase winding coil. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] As attached Figure 1 To be continued Figure 4 As shown: An electromagnetically driven unmanned logistics vehicle system, characterized in that it includes a stator track unit, a logistics vehicle chassis 7 that travels on the stator track unit, and a mover 13 vehicle body unit disposed below the logistics vehicle chassis 7.

[0030] The stator track unit is composed of multiple standardized conductive tracks 1 spliced ​​together, and a track groove 2 is formed in the middle of the conductive track 1 along the length direction. A high-performance permanent magnet array 3 is embedded in the track groove 2. The permanent magnet array 3 is composed of multiple permanent magnets arranged at equal intervals, and these permanent magnets are arranged along the length direction of the track. This can ensure the continuity and uniformity of the magnetic field distribution. At the same time, a concave slot 4 is formed on the upper part of the inner wall of the track groove 2 along the left and right sides. In addition, multiple high-strength fixing screws 65 are also provided between the bottom of the conductive track 1 and the ground or support frame. In this way, the stability and load-bearing capacity of the track system can be ensured by the high-strength fixing screws 65 during use.

[0031] Two wheels 8 are provided on the left and right sides of the logistics vehicle chassis 7, and the wheels 8 are in contact with the ground outside the conductive track 1. In this way, the logistics vehicle chassis 7 can travel on the conductive track 1 by means of the wheels 8 during use.

[0032] The mover 13 vehicle body unit includes a mover 13, a mover 13 core 14, and a three-phase winding coil 15. The mover 13 is installed below the logistics vehicle chassis 7. The mover 13 core 14 is made of stacked silicon steel sheets and is distributed inside the mover 13. The three-phase winding coil 15 is tightly wound around the mover 13 core 14. At the same time, the mover 13 is opposite to the slot 4 and is in contact with the slot 4.

[0033] In operation, the user can input three-phase alternating current (phases A, B, and C) into the conductive track 1 via an external control circuit. The phase difference between the three phase currents is 120°, and they change sequentially over time. Each phase current corresponds to a set of conductors in the track, and the spatial arrangement of the conductors matches the phase of the current. As the three-phase current passes through the track conductors sequentially, a periodically changing magnetic field is generated around each phase conductor. Due to the phase difference of the three-phase currents and the spatial arrangement of the conductors, these magnetic fields form continuous fluctuations in time and space, synthesizing a traveling wave magnetic field that propagates along the track direction. Its propagation direction is determined by the phase sequence of the currents. When the phase sequence is changed (e.g., from A→B→C to A→C→B), the direction of the traveling wave magnetic field will also reverse. When the traveling wave magnetic field propagates along the track at a certain speed, the coil of mover 13 generates an induced electromotive force due to the change in the magnetic field (Faraday's law of electromagnetic induction), which in turn forms an induced current (eddy current) in the closed coil circuit. The induced current interacts with the traveling wave magnetic field, generating a Lorentz force. The direction of this force is consistent with the propagation direction of the traveling wave magnetic field, propelling mover 13 to move linearly along the track.

[0034] Furthermore, to increase its conductivity, the surface layer of the conductive track 1 can be made of a highly conductive copper alloy material, and the contact surface can be made smooth through processing technology, which can reduce the frictional loss of the mover 13 during operation. For example, common machining, chemical polishing or electrochemical polishing processes can be used to make the contact surface of the conductive track 1 smoother, thereby reducing the surface roughness and ultimately reducing the frictional loss of the mover 13 during operation.

[0035] Furthermore, to adapt to the actual needs of the logistics center, the shape of the stator track unit can be spliced ​​into any of the following types: straight, curved, or cross-shaped. Additionally, considering the need for turning in the intersection area, a dedicated transition module (e.g., a high-manganese steel movable frog structure, analogous to a railway turnout, with a servo coil and iron core forming the drive assembly; when the mover 13 approaches the intersection area, a position sensor triggers the control circuit to input a pulse current to the servo coil, generating electromagnetic force to push the turnout switch rail laterally, achieving rapid switching with ±0.5mm accuracy) can be used to achieve seamless magnetic field connection. This avoids interruptions or interference in the magnetic field of the mover 13 during operation. That is, when the vehicle passes through the curved curve, a three-phase alternating current is input to the curved track through the external control circuit, generating a traveling wave magnetic field above the track that propagates along the tangent of the curve. The propagation direction of the traveling wave magnetic field is consistent with the curvature direction of the curved track, so that the electromagnetic driving force on the vehicle body 13 is always along the tangent of the track, guiding the vehicle body 13 to move along the curved path, thus completing the steering operation.

[0036] Furthermore, to reduce eddy current losses, the mover core 14 of the mover 13 is formed by stacking multiple layers of silicon steel sheets and is coated with an insulating layer on the surface. This design enables the formation of a low magnetic reluctance mover core 14. Meanwhile, to ensure electromagnetic coupling efficiency, the three-phase winding coil 15 is wound with highly conductive enameled wire and fixed with insulating material.

[0037] Furthermore, to increase the durability of the mover 13, a high-temperature resistant and moisture-resistant silicon carbide composite protective layer is coated on the surface of the mover 13. This design enables the mover 13 to adapt to complex logistics environments.

[0038] Furthermore, to increase the installation stability of the permanent magnet array 3, multiple linearly arranged fixing screws 6 are provided at the connection between the permanent magnet array 3 and the conductive slide rail. This design allows the permanent magnet array 3 to be stably installed on the conductive track 1. In addition, when the conductive slide rail is assembled, the fixing screws 6 can be used for auxiliary assembly.

[0039] Furthermore, a suspension system 9 is installed at the bottom of the vehicle body. The suspension system 9 is the existing automobile suspension system. That is, the suspension system is the general term for all force transmission connection devices between the vehicle frame and the axle or wheel 8. Its function is to transmit the force and torque acting between the wheel 8 and the frame, and to buffer the impact force transmitted from the uneven road surface to the frame or body, and to dampen the vibration caused therefrom, so as to ensure the smooth driving of the vehicle.

[0040] Meanwhile, the suspension system 9 mainly includes a fixed bracket 10, a suspension bracket 11, and a shock-absorbing spring. The wheel 8 is connected to the fixed bracket 10 and the suspension bracket 11 in sequence by bolts. Then, the wheel 8 is locked to the suspension bracket 11 by bolts through the mounting holes on the wheel hub. The shock-absorbing spring is set between the fixed bracket 10 and the suspension bracket 11. In use, if there is an uneven road surface, the spring can absorb the vibration and avoid the fluctuation of driving force caused by the sudden change of electromagnetic coupling gap, so as to ensure that the entire vehicle body can run smoothly.

[0041] Furthermore, to facilitate cargo loading, an automated loading and unloading robot, such as a robotic arm, is installed above the logistics vehicle chassis 7. When the logistics vehicle stops at a designated station, the robotic arm can complete the loading and unloading of cargo in the open loading area above the chassis.

[0042] The following is the implementation process of this plan:

[0043] 1. Track installation: Based on the layout of the logistics center, the standardized conductive track units are spliced ​​together to form the required path;

[0044] 2. Current input: Three-phase alternating current is supplied to the track through an external control circuit to verify the direction and intensity of the traveling wave magnetic field;

[0045] 3. Stability test: Check the connection between the track fixing screw 6 and the load-bearing structure to ensure smooth operation;

[0046] 4. Start-up and operation of logistics vehicles

[0047] Initialization of mover 13: Align the mover 13 under the chassis 7 of the logistics vehicle with the concave groove 4 of the track to ensure that the mover 13 is coupled with the magnetic field of the track;

[0048] Path navigation: The track magnetic field guides the logistics vehicle to travel along the preset path, and the direction is automatically switched at intersections through the magnetic field transfer module;

[0049] 5. Cargo loading and unloading: The logistics vehicle stops at the designated station, and the open loading area above the chassis is used by the robotic arm to load and unload the cargo.

[0050] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be the protection scope of the claims.

Claims

1. An electromagnetically driven unmanned logistics vehicle system, characterized in that, include: The stator track unit is composed of multiple standardized conductive tracks spliced ​​together, and a track groove is formed in the middle of the conductive track along the length direction. A high-performance permanent magnet array is embedded in the track groove. Slots are formed on the upper part of the inner wall of the track groove along the left and right sides. When in use, the permanent magnet array can make the conductive track generate a magnetic field. The logistics vehicle chassis has wheels distributed on its left and right sides, and the wheels are in contact with the ground outside the conductive track. In use, the logistics vehicle chassis can travel on the conductive track by means of the wheels. The moving body unit includes a moving part, a moving part core and a three-phase winding coil. The moving part is installed below the chassis of the logistics vehicle and is positioned opposite and in contact with the slot. Multiple moving part cores are provided and distributed inside the moving part. The three-phase winding coil is tightly wound around the moving part core. When the conductive track is energized by the outside, the mover can be magnetically coupled to the conductive track.

2. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: The permanent magnet array consists of multiple equidistant permanent magnets arranged along the length of the track.

3. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: The shape of the stator track unit can be spliced ​​into any one of the following: straight line, curved track, or cross track.

4. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: The moving core is formed by stacking multiple layers of silicon steel sheets, and an insulating layer is coated on the surface. At the same time, a high-temperature resistant and moisture-resistant silicon carbide composite protective layer is also coated on the surface of the moving core.

5. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: Multiple high-strength fixing screws are also provided between the bottom of the conductive track and the ground or support frame, and multiple fixing screws arranged linearly are also provided at the connection between the permanent magnet array and the conductive slide rail.

6. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: The surface of the conductive track can be made of a highly conductive copper alloy material.

7. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: The connection between the chassis and the wheels of the logistics vehicle is also equipped with a suspension system, which includes a fixed bracket, a suspension bracket and a shock-absorbing spring. The wheels are connected to the fixed bracket and the suspension bracket in sequence by bolts, and the wheels are locked to the suspension bracket by bolts through the mounting holes on the wheel hub. The shock-absorbing spring is located between the fixed bracket and the suspension bracket.

8. The electromagnetically driven unmanned logistics vehicle system according to claim 1, characterized in that: An automated loading and unloading robot is also installed on top of the logistics vehicle chassis.

9. The electromagnetically driven unmanned logistics vehicle system according to claim 8, characterized in that: The automated loading and unloading robot is specifically a robotic arm.

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