shuttle

By installing shielding components, sensor protection components, and inverter protection components in the shuttle, the problem of sensitive components in the shuttle being susceptible to liquid leakage is solved, achieving effective protection for components, sensors, and inverters, and improving waterproof protection capabilities.

CN224278647UActive Publication Date: 2026-05-26GUANGDONG SWISSLOG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG SWISSLOG TECH CO LTD
Filing Date
2025-05-19
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Sensitive components in shuttle vehicles are susceptible to liquid leakage, and existing technologies lack effective protective structures.

Method used

The shuttle car is equipped with shielding components, sensor protection components, and inverter protection components, which are detachably installed on the chassis body by screws or other connectors to protect the components, sensors, and inverters.

Benefits of technology

It effectively prevents liquid from dripping onto sensitive components, improves the waterproof protection of components, and facilitates disassembly and modular application.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a shuttle vehicle, comprising: a chassis body; a component assembly mounted on the chassis body; at least one sensor; at least one frequency converter; a shielding assembly mounted on the chassis body, the shielding assembly being used to shield the component assembly; at least one sensor protection component mounted on the chassis body, the sensor being mounted on a corresponding sensor protection component, a portion of the sensor protection component being located on top of the sensor and shielding the sensor; and at least one frequency converter protection component mounted on the chassis body, the frequency converter being mounted on and located within the frequency converter protection component. By incorporating the shielding assembly, sensor protection component, and frequency converter protection component in the shuttle vehicle, waterproof protection can be provided for the component assembly, sensor, and frequency converter, preventing liquid dripping onto the sensors, frequency converter, and various electronic components in the component assembly.
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Description

Technical Field

[0001] This utility model relates to the field of transportation vehicle technology, and more specifically, to a shuttle vehicle. Background Technology

[0002] The shuttle is equipped with sensitive components. If the vehicle leaks liquid, the liquid will drip onto the sensitive components, causing damage to the components and affecting their function. The shuttle in the relevant technology does not have a structure to prevent the sensitive components from dripping. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the purpose of this utility model is to provide a shuttle vehicle, comprising: a chassis body; a component assembly mounted on the chassis body; at least one sensor; at least one frequency converter; a shielding assembly mounted on the chassis body, the shielding assembly being used to shield the component assembly; at least one sensor protection component mounted on the chassis body, the sensor being mounted on the corresponding sensor protection component, a portion of the sensor protection component being located on top of the sensor and shielding the sensor; and at least one frequency converter protection component mounted on the chassis body, the frequency converter being mounted on the frequency converter protection component and located within the frequency converter protection component.

[0005] This application discloses a shuttle vehicle, which can be a mother-daughter shuttle for transporting goods in a warehouse. The shuttle vehicle includes a chassis body, a component assembly, sensors, and a frequency converter. The component assembly is mounted on the chassis body and includes multiple electronic components. The sensors can be daughter vehicle presence sensors. This shuttle vehicle is a mother vehicle shuttle in a mother-daughter system, meaning the sensor is used on the mother vehicle to detect whether the daughter vehicle is in the correct position. The number of sensors and frequency converters is at least one. To protect the component assembly, sensors, and frequency converter from liquid dripping, this application also includes a protective structure in the shuttle vehicle for protecting these components.

[0006] The shuttle also includes a shielding assembly, a sensor protection assembly, and a frequency converter protection assembly. The shielding assembly is mounted on the chassis body and is used to shield the component group. Specifically, the shielding assembly includes multiple shields, each corresponding to a specific electronic component in the component group. Each shield protects a specific electronic component from liquid dripping onto it. The sensor protection assembly is mounted on the chassis body, with the sensors mounted on it. A portion of the sensor protection assembly is located on top of the sensors to shield them from liquid dripping. The number of sensor protection assemblies is the same as the number of sensors, and they are arranged in a one-to-one correspondence. The frequency converter protection assembly is mounted on the chassis body. The frequency converter mounting assembly is a box-shaped structure with an internal cavity. The frequency converter is mounted on and located inside the frequency converter protection assembly. Thus, the frequency converter protection assembly protects the frequency converter from liquid dripping onto it.

[0007] By incorporating shielding components, sensor protection assemblies, and inverter protection assemblies within the shuttle vehicle, waterproof protection can be provided for the component groups, sensors, and inverters, preventing liquid dripping onto the sensors, inverters, and various electronic components within the component groups. These components are detachably mounted to the chassis body using screws or other connectors, offering flexible and simple installation and facilitating disassembly. Compared to related products, the shielding components, sensor protection assemblies, and inverter protection assemblies in this application exhibit a high degree of modularity, making them suitable for use in various different products.

[0008] In some technical solutions, optionally, the component group includes: an optoelectronic component mounted on the chassis body; the shielding component group includes: a first shielding component mounted on the chassis body, at least a portion of the first shielding component being located on top of the optoelectronic component and shielding the optoelectronic component.

[0009] In this technical solution, the component group and the shielding component group are defined. The component group includes an optoelectronic component, which is one of multiple electronic components in the component group. The optoelectronic component is mounted on the chassis body, specifically located behind the front of the vehicle. The shielding component group includes a first shielding component, which is one of multiple shielding components in the shielding component group. The first shielding component is used to protect the optoelectronic component. Specifically, the first shielding component is mounted on the chassis body, and at least a portion of the first shielding component is located on top of the optoelectronic component, shielding the optoelectronic component to prevent liquid from dripping onto it, thus providing waterproof protection for the optoelectronic component. The first shielding component can be a bent metal plate, and it can be detachably connected to the chassis body by screws or other connectors.

[0010] By setting a first shielding component on the chassis body, the optoelectronic components can be shielded by the first shielding component, thereby achieving waterproof protection for the optoelectronic components.

[0011] In some technical solutions, the component group may optionally include: a reflector mounted on the chassis body; the shielding component group may also include: a second shielding component mounted on the chassis body, at least a portion of the second shielding component being located on top of the reflector and shielding the reflector.

[0012] In this technical solution, the component group and the shielding component group are further defined. The component group also includes a reflector, which is one of multiple electronic components in the component group. The reflector and the photoelectric component together form a sensing system, and the reflector is mounted on the chassis body. The shielding component group also includes a second shielding component, which is one of multiple shielding components in the shielding component group. The second shielding component is used to protect the reflector. Specifically, the second shielding component is mounted on the chassis body, and at least a portion of the second shielding component is located on top of the reflector, shielding the reflector to prevent liquid from dripping onto it, thus providing waterproof protection for the reflector. The second shielding component can be a bent metal plate, and it can be detachably connected to the chassis body by screws or other connectors.

[0013] By installing a second shielding component on the chassis body, the reflector can be shielded by the second shielding component, thereby achieving waterproof protection for the reflector.

[0014] In some technical solutions, the second shielding member may optionally have a first guide surface, which has an angle with the horizontal plane and extends in a direction away from the reflector toward the bottom of the chassis body.

[0015] In this technical solution, the structure of the second shielding member is defined. The second shielding member has a first guiding surface for guiding liquid flow. Understandably, when liquid continuously drips onto the second shielding member, a certain amount of liquid will accumulate on the second shielding member. To prevent the liquid from dripping downwards onto the reflector, this application provides a guiding structure in the second shielding member to guide the liquid to a position away from the reflector. Specifically, the first guiding surface has an angle with the horizontal plane, and extends in a direction away from the reflector towards the bottom of the chassis body, that is, the first guiding surface extends obliquely downwards. This allows the liquid accumulated on the second shielding member to flow along the first guiding surface to a position away from the reflector under the action of gravity.

[0016] By providing a first guiding surface in the second shield, the liquid can be guided through the first guiding surface, thereby reducing the amount of liquid accumulated on the second shield and guiding the liquid to a position away from the reflector, preventing the liquid from dripping onto the reflector.

[0017] In some technical solutions, the component group may optionally include: a barcode reader, mounted on the chassis body; the shielding component group may also include: a third shielding component, mounted on the chassis body, at least a portion of the third shielding component being located on top of the barcode reader and shielding the barcode reader.

[0018] In this technical solution, the component group and the shielding component group are further defined. The component group also includes a barcode reader, which is one of several electronic components in the component group and is mounted on the chassis body. The shielding component group also includes a third shielding component, which is one of several shielding components in the shielding component group and is used to protect the barcode reader. Specifically, the third shielding component is mounted on the chassis body, and at least a portion of the third shielding component is located on top of the barcode reader, shielding the barcode reader to prevent liquid from dripping onto it, thus providing waterproof protection for the barcode reader. The third shielding component is made of nylon material, therefore it is lightweight and corrosion-resistant, and the third shielding component can be detachably connected to the chassis body by screws or other connectors.

[0019] By installing a third shielding component on the chassis body, the barcode reader can be shielded, thereby achieving waterproof protection for the barcode reader.

[0020] In some technical solutions, the third shielding member may optionally have a second guide surface, which has an angle with the horizontal plane and extends in a direction away from the barcode reader toward the bottom of the chassis body.

[0021] In this technical solution, the structure of the third shielding member is defined. The third shielding member has a second guiding surface for guiding the liquid. Understandably, when liquid continuously drips onto the third shielding member, a certain amount of liquid will accumulate on the third shielding member. To prevent the liquid from dripping downwards onto the barcode reader, this application provides a guiding structure in the third shielding member to guide the liquid to a position away from the barcode reader. Specifically, the second guiding surface has an angle with the horizontal plane, and extends in a direction away from the barcode reader towards the bottom of the chassis body, that is, the second guiding surface extends obliquely downwards. This allows the liquid accumulated on the third shielding member to flow along the second guiding surface to a position away from the barcode reader under the action of gravity.

[0022] By providing a second flow guide surface in the third shield, the liquid can be guided through the second flow guide surface. This reduces the amount of liquid accumulated on the third shield and directs the liquid away from the barcode reader, preventing liquid from dripping onto the barcode reader.

[0023] In some technical solutions, optionally, the sensor protection component includes: a mounting component, mounted on the chassis body, the sensor mounted on the mounting component, and the mounting component capable of driving the sensor to rotate relative to the chassis body; and a shield, mounted on the chassis body, the height of the shield being higher than the mounting component, and the shield capable of shielding the mounting component.

[0024] In this technical solution, the structure of the sensor protection assembly is defined. The sensor protection assembly includes a mounting component and a shield, wherein the mounting component is used to mount the sensor, and the shield is used to shield the sensor. Specifically, the mounting component is mounted on the chassis body, the sensor is mounted on the mounting component, and the shield is mounted on the chassis body. The height of the shield is higher than the mounting component and the sensor, that is, the shield is located above the sensor. This allows the shield to protect the sensor from liquid dripping onto it, thus achieving waterproof protection for the sensor.

[0025] Furthermore, the mounting component can rotate within a certain angular range relative to the chassis body, thereby adjusting the position of the sensor by adjusting the angle of the mounting component, making the sensor position more compatible with the shield and improving the protective effect of the shield.

[0026] In some technical solutions, optionally, the shield has a light-transmitting opening, through which the sensor emits light and the light-transmitting opening is used to transmit the light emitted by the sensor.

[0027] In this technical solution, the structure of the shield is further defined. The sensor in this application is a vehicle position sensor, which emits light to determine whether the vehicle is in the correct position. The shield blocks the sensor; to allow the light emitted by the sensor to pass through normally, this application provides a light-transmitting opening on the shield, through which the light emitted by the sensor can exit. Furthermore, when the sensor's location prevents light from passing through the light-transmitting opening, the user can adjust the angle of the mounting component to adjust the sensor's angle to a suitable position, allowing the sensor to emit light normally through the light-transmitting opening.

[0028] Furthermore, the sensor is mounted at an angle on the mounting bracket, which allows the light to propagate obliquely upwards while the bracket blocks the sensor, enabling the light to escape from the light-transmitting opening.

[0029] A light-transmitting component can be installed at the light-transmitting opening to allow light to pass through normally while preventing liquid from dripping onto the sensor. Alternatively, the light-transmitting opening can be left uninstalled, simply having an opening structure to allow light to pass through.

[0030] By setting a light-transmitting opening on the shield, the light emitted by the sensor can be emitted through the light-transmitting opening, enabling the sensor to work normally.

[0031] In some technical solutions, the mounting component may optionally include: a base body, mounted on the chassis body; a first mounting plate, rotatably mounted on the base body, with the sensor mounted on the first mounting plate; and a locking component, mounted on the base body, wherein when the locking component opens the first mounting plate, the first mounting plate can rotate within a preset angle range, and the locking component can lock the first mounting plate at any position within the preset angle range.

[0032] In this technical solution, the structure of the mounting component is defined. The mounting component includes a base, a first mounting plate, and a locking member. The base is mounted on the chassis body and is fixedly connected to the chassis body. The first mounting plate is rotatably mounted on the base, and the base has slide rails on both sides, allowing the first mounting plate to rotate relative to the base along the slide rails. The sensor is mounted on the side of the first mounting plate facing the shield, and its position can be adjusted by rotating the first mounting plate. The locking member is mounted on the base and can lock the first mounting plate in a suitable position. When the locking member is open, the first mounting plate can rotate relative to the base within a preset angle range. When the user needs to adjust the sensor's position, the user first opens the locking member to allow the first mounting plate to rotate, then adjusts the first mounting plate to a suitable position, and then locks the first mounting plate in that position using the locking member to keep it fixed. The locking member can be a screw.

[0033] By setting a first mounting plate and a locking member that can lock the first mounting plate to the base in the mounting component, the position of the first mounting plate can be adjusted, thereby adjusting the position of the sensor, so that the sensor can still emit light normally through the light-transmitting hole even when it is blocked by the shielding plate.

[0034] In some technical solutions, optionally, the inverter protection components include: a housing, mounted on the chassis body, the housing having a mounting cavity, the inverter being located within the mounting cavity, and an opening at the top of the housing; and a cover, detachably connected to the housing, the cover being able to open or close the opening.

[0035] In this technical solution, the structure of the inverter protection component is defined. The inverter protection component is a box-shaped structure with an internal cavity. The inverter protection component includes a housing and a cover. The housing is mounted on the chassis body and has a mounting cavity. The inverter is located in the mounting cavity and is connected to the housing.

[0036] Furthermore, the top of the enclosure has an opening that communicates with the mounting cavity, allowing users to perform maintenance on the inverter through this opening. The cover is detachably connected to the enclosure. When the cover is attached, it closes the opening, and both the cover and enclosure together shield the inverter from liquid dripping onto it. When the cover is detached, it opens, allowing users to observe or perform maintenance on the inverter through this opening. The enclosure can be connected to the user's unit using screws or other fasteners.

[0037] In some technical solutions, the enclosure may optionally include: a base plate, mounted on the chassis body, with the frequency converter mounted on the base plate; and a protective cover, connected to the base plate or the chassis body, the base plate and the protective cover forming an installation cavity, with an opening at the top of the protective cover.

[0038] In this technical solution, the structure of the enclosure is defined. The enclosure includes a base plate and a protective cover. The base plate is used to mount the frequency converter, and the protective cover is used to protect the frequency converter. Specifically, the base plate is mounted on the chassis body, the frequency converter is mounted on the base plate, and the protective cover is connected to the base plate or the chassis body. The protective cover surrounds the periphery of the frequency converter, and the base plate and the protective cover together form a mounting cavity with an opening at the top of the protective cover. Both the base plate and the protective cover can be made of metal plates. The base plate is connected to the chassis body by screws or other connectors, and the protective cover is connected to the base plate by screws.

[0039] By installing a base plate and a protective cover connected to the base plate in the enclosure, the bottom and sides of the frequency converter can be protected by the base plate and the protective cover respectively.

[0040] In some technical solutions, the cover may optionally have a baffle plate, which is located outside the mounting cavity and extends toward the bottom plate when the cover is connected to the housing.

[0041] In this technical solution, the structure of the cover is defined. The cover has a guide plate for guiding the liquid flow. Understandably, when liquid continuously drips onto the cover, a certain amount of liquid will accumulate on the cover. To prevent liquid accumulation on the cover, this application provides a guide plate in the cover to guide the liquid to a position away from the inverter. Specifically, the upper surface of the guide plate has an angle with the horizontal plane, and the guide plate extends in the direction towards the bottom plate, that is, the guide plate extends obliquely downward. The guide plate is located outside the mounting cavity, so that the liquid accumulated on the cover can flow along the guide plate to a position away from the housing under the action of gravity, and the liquid will not flow into the mounting cavity.

[0042] By installing a baffle plate in the cover, the liquid can be guided through the baffle plate, which reduces the amount of liquid accumulating on the cover and guides the liquid away from the box, preventing liquid from dripping into the mounting cavity.

[0043] In some technical solutions, optionally, both the protective cover and the cover are provided with heat dissipation vents, which are connected to the mounting cavity.

[0044] In this technical solution, the structure of the protective cover and the cover is further defined. Understandably, the frequency converter generates heat during operation. Since the frequency converter protection components are nearly enclosed structures, this application provides heat dissipation structures on both the protective cover and the cover to facilitate heat dissipation. Specifically, both the protective cover and the cover are provided with heat dissipation vents that communicate with the mounting cavity. This allows heat to be dissipated from the frequency converter through the vents, preventing overheating and ensuring normal operation.

[0045] In some technical solutions, the base plate may optionally include: a second mounting plate on which the frequency converter is mounted; and a support member mounted on the chassis body, the support member being used to support the second mounting plate so that there is a gap between the second mounting plate and the chassis body.

[0046] In this technical solution, the structure of the base plate is defined. The base plate includes a second mounting plate and a support member. The support member supports the second mounting plate, and the frequency converter is mounted on the second mounting plate. Specifically, the support member is mounted on the chassis body, and the second mounting plate is connected to the top of the support member. The support member supports the second mounting plate, creating a gap between the second mounting plate and the chassis body. The frequency converter is mounted on the second mounting plate. Because there is a gap between the second mounting plate and the chassis body, i.e., the second mounting plate is suspended, the heat dissipation effect of the second mounting plate is improved, thereby achieving heat dissipation for the frequency converter. Furthermore, it reduces the possibility of liquid entering the mounting cavity through the gap between the second mounting plate and the protective cover.

[0047] The support component can be integrally formed with the second mounting plate through sheet metal, or it can be connected to the second mounting plate through screws or other connecting components.

[0048] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0049] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0050] Figure 1 One of the structural schematic diagrams of a shuttle vehicle according to an embodiment of the present invention is shown;

[0051] Figure 2 A second schematic diagram of the structure of a shuttle vehicle according to an embodiment of the present invention is shown;

[0052] Figure 3It shows Figure 2 A magnified view of a portion of region B in the middle;

[0053] Figure 4 It shows Figure 2 A magnified view of a portion of region C in the middle;

[0054] Figure 5 A schematic diagram of the structure of a sensor protection assembly according to an embodiment of the present invention is shown;

[0055] Figure 6 It shows Figure 1 A magnified view of a portion of region A in the middle;

[0056] Figure 7 An exploded view of a frequency converter protection component according to an embodiment of the present invention is shown;

[0057] Figure 8 A schematic diagram of the structure of a frequency converter protection component according to an embodiment of the present invention is shown.

[0058] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0059] 100 Shuttle vehicle, 110 Chassis body, 120 Component group, 121 Optoelectronic component, 122 Reflector, 123 Code reader, 130 Sensor, 140 Inverter, 150 Shielding component group, 151 First shielding component, 152 Second shielding component, 153 First guide surface, 154 Third shielding component, 155 Second guide surface, 160 Sensor protection component, 161 Mounting component, 162 Shielding plate, 163 Light-transmitting opening, 164 Base, 165 First mounting plate, 166 Locking component, 170 Inverter protection component, 171 Housing, 172 Opening, 173 Cover, 175 Base plate, 176 Protective cover, 177 Guide plate, 178 Second mounting plate, 179 Support component. Detailed Implementation

[0060] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0061] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0062] The following reference Figures 1 to 8The shuttle 100 is described according to some embodiments of the present invention.

[0063] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this application proposes a shuttle vehicle 100, comprising: a chassis body 110; a component assembly 120 mounted on the chassis body 110; at least one sensor 130; at least one frequency converter 140; a shielding assembly 150 mounted on the chassis body 110, the shielding assembly 150 being used to shield the component assembly 120; at least one sensor protection assembly 160 mounted on the chassis body 110, the sensor 130 being mounted on the corresponding sensor protection assembly 160, a portion of the sensor protection assembly 160 being located on top of the sensor 130 and shielding the sensor 130; and at least one frequency converter protection assembly 170 mounted on the chassis body 110, the frequency converter 140 being mounted on the frequency converter protection assembly 170 and located within the frequency converter protection assembly 170.

[0064] This application proposes a shuttle 100, which can be a mother-daughter vehicle used for transporting goods in a warehouse. For example... Figure 1 and Figure 2 As shown, the shuttle 100 includes a chassis body 110, a component assembly 120, a sensor 130, and a frequency converter 140. The component assembly 120 is mounted on the chassis body 110 and includes multiple electronic components. The sensor 130 can be a child vehicle presence sensor. Since the shuttle 100 is a mother vehicle shuttle in a mother-child shuttle system, the sensor 130 is used on the mother vehicle to detect whether the child vehicle is in the correct position. There is at least one sensor 130 and a frequency converter 140. To protect the component assembly 120, the sensor 130, and the frequency converter 140 from liquid dripping, this application also provides a protective structure in the shuttle 100 to protect these components.

[0065] The shuttle 100 also includes a shielding assembly 150, a sensor protection assembly 160, and a frequency converter protection assembly 170. Among them, such as... Figure 1 and Figure 2 As shown, the shielding assembly 150 is mounted on the chassis body 110 and is used to shield the component assembly 120. Specifically, the shielding assembly 150 includes multiple shielding elements, each corresponding to a different electronic component in the component assembly 120. Each shielding element shields the electronic components to prevent liquid from dripping onto them. Figure 5 As shown, the sensor protection assembly 160 is mounted on the chassis body 110, and the sensor 130 is mounted on the sensor protection assembly 160. A portion of the sensor protection assembly 160 is located on top of the sensor 130 to shield the sensor 130 and prevent liquid from dripping onto it. The number of sensor protection assemblies 160 is the same as the number of sensors 130, and they are arranged in a one-to-one correspondence. Figure 1 and Figure 7 As shown, the inverter protection assembly 170 is mounted on the chassis body 110. The inverter mounting assembly is a box-shaped structure with an internal cavity. The inverter 140 is mounted on the inverter protection assembly 170 and located inside the inverter protection assembly 170. In this way, the inverter 140 can be protected by the inverter protection assembly 170 to prevent liquid from dripping onto the inverter 140.

[0066] By incorporating a shielding assembly 150, a sensor protection assembly 160, and a frequency converter protection assembly 170 within the shuttle 100, waterproof protection is provided for the component assembly 120, sensor 130, and frequency converter 140, preventing liquid dripping onto these components and the electronic components within the component assembly 120. The shielding assembly 150, sensor protection assembly 160, and frequency converter protection assembly 170 are detachably mounted to the chassis body 110 using screws or other connectors, offering flexible and simple installation and facilitating disassembly. Compared to related products, the shielding assembly 150, sensor protection assembly 160, and frequency converter protection assembly 170 in this application exhibit a higher degree of modularity, making them suitable for use in various different products.

[0067] In some embodiments, optionally, such as Figure 1 , Figure 2 and Figure 3 As shown, the component group 120 includes: a photoelectric component 121, which is mounted on the chassis body 110; the shielding component group 150 includes: a first shielding component 151, which is mounted on the chassis body 110, and at least a portion of the first shielding component 151 is located on top of the photoelectric component 121 and shields the photoelectric component 121.

[0068] In this embodiment, the component group 120 and the shielding component group 150 are defined. The component group 120 includes a photoelectric component 121, which is one of a plurality of electronic components in the component group 120. The photoelectric component 121 is mounted on the chassis body 110, specifically, the photoelectric component 121 is located behind the front of the vehicle. The shielding component group 150 includes a first shielding component 151, which is one of a plurality of shielding components in the shielding component group 150. The first shielding component 151 is used to protect the photoelectric component 121. Specifically, the first shielding component 151 is mounted on the chassis body 110, and at least a portion of the first shielding component 151 is located on top of the photoelectric component 121, shielding the photoelectric component 121 to prevent liquid from dripping onto the photoelectric component 121, thus providing waterproof protection for the photoelectric component 121. The first shield 151 can be a bent metal plate, and the first shield 151 can be detachably connected to the chassis body 110 by screws or other connectors.

[0069] By setting a first shielding member 151 on the chassis body 110, the photoelectric component 121 can be shielded by the first shielding member 151 to achieve waterproof protection for the photoelectric component 121.

[0070] In some embodiments, optionally, such as Figure 1 , Figure 2 and Figure 4 As shown, the component group 120 further includes: a reflector 122, which is mounted on the chassis body 110; the shielding component group 150 further includes: a second shielding component 152, which is mounted on the chassis body 110, and at least a portion of the second shielding component 152 is located on top of the reflector 122 and shields the reflector 122.

[0071] In this embodiment, the component group 120 and the shielding component group 150 are further defined. The component group 120 also includes a reflector 122, which is one of a plurality of electronic components in the component group 120. The reflector 122 and the photoelectric component 121 together form a sensing system, and the reflector 122 is mounted on the chassis body 110. The shielding component group 150 also includes a second shielding component 152, which is one of a plurality of shielding components in the shielding component group 150. The second shielding component 152 is used to protect the reflector 122. Specifically, the second shielding component 152 is mounted on the chassis body 110, and at least a portion of the second shielding component 152 is located on top of the reflector 122, shielding the reflector 122 to prevent liquid from dripping onto the reflector 122 and to provide waterproof protection for the reflector 122. The second shield 152 can be a bent metal plate, and the second shield 152 can be detachably connected to the chassis body 110 by screws or other connectors.

[0072] By providing a second shielding member 152 on the chassis body 110, the reflector 122 can be shielded by the second shielding member 152, thereby achieving waterproof protection for the reflector 122.

[0073] In some embodiments, optionally, such as Figure 4 As shown, the second shielding member 152 has a first guide surface 153, which has an angle with the horizontal plane. Along the direction away from the reflector 122, the first guide surface 153 extends toward the bottom of the chassis body 110.

[0074] In this embodiment, the structure of the second shield 152 is defined. The second shield 152 has a first guiding surface 153 for guiding liquid flow. Understandably, when liquid continuously drips onto the second shield 152, a certain amount of liquid will accumulate on the second shield 152. To prevent the liquid from dripping downwards onto the reflector 122, this application provides a guiding structure in the second shield 152 to guide the liquid to a position away from the reflector 122. Specifically, the first guiding surface 153 has an angle with the horizontal plane, and extends in a direction away from the reflector 122 towards the bottom of the chassis body 110, that is, the first guiding surface 153 extends obliquely downwards. This allows the liquid accumulated on the second shield 152 to flow along the first guiding surface 153 to a position away from the reflector 122 under the action of gravity.

[0075] By providing a first guiding surface 153 in the second shielding member 152, the liquid can be guided through the first guiding surface 153. On the one hand, this reduces the amount of liquid accumulated on the second shielding member 152, and on the other hand, it guides the liquid to a position away from the reflector 122, preventing the liquid from dripping onto the reflector 122.

[0076] In some embodiments, optionally, such as Figure 1 , Figure 2 and Figure 6 As shown, the component group 120 further includes: a barcode reader 123, which is mounted on the chassis body 110; the shielding component group 150 further includes: a third shielding component 154, which is mounted on the chassis body 110, and at least a portion of the third shielding component 154 is located on top of the barcode reader 123 and shields the barcode reader 123.

[0077] In this embodiment, the component group 120 and the shielding component group 150 are further defined. The component group 120 also includes a barcode reader 123, which is one of a plurality of electronic components in the component group 120, and is mounted on the chassis body 110. The shielding component group 150 also includes a third shielding component 154, which is one of a plurality of shielding components in the shielding component group 150, and is used to protect the barcode reader 123. Specifically, the third shielding component 154 is mounted on the chassis body 110, and at least a portion of the third shielding component 154 is located on top of the barcode reader 123, shielding the barcode reader 123 to prevent liquid from dripping onto the barcode reader 123, thus providing waterproof protection for the barcode reader 123. The third shield 154 is made of nylon material, which makes it lightweight and corrosion resistant. The third shield 154 can be detachably connected to the chassis body 110 by screws or other connectors.

[0078] By setting a third shielding member 154 on the chassis body 110, the barcode reader 123 can be shielded by the third shielding member 154, so as to achieve waterproof protection for the barcode reader 123.

[0079] In some embodiments, optionally, such as Figure 6 As shown, the third shielding member 154 has a second guide surface 155, which has an angle with the horizontal plane and extends in a direction away from the barcode reader 123 toward the bottom of the chassis body 110.

[0080] In this embodiment, the structure of the third shielding member 154 is defined. The third shielding member 154 has a second guiding surface 155 for guiding liquid flow. Understandably, when liquid continuously drips onto the third shielding member 154, a certain amount of liquid will accumulate on the third shielding member 154. To prevent the liquid from dripping downwards onto the barcode reader 123, this application provides a guiding structure in the third shielding member 154 to guide the liquid to a position away from the barcode reader 123. Specifically, the second guiding surface 155 has an angle with the horizontal plane, and extends in a direction away from the barcode reader 123 towards the bottom of the chassis body 110, that is, the second guiding surface 155 extends obliquely downwards. This allows the liquid accumulated on the third shielding member 154 to flow along the second guiding surface 155 to a position away from the barcode reader 123 under the action of gravity.

[0081] By providing a second flow guiding surface 155 in the third shielding member 154, the liquid can be guided through the second flow guiding surface 155. On the one hand, this reduces the liquid accumulation on the third shielding member 154, and on the other hand, it guides the liquid to a position away from the barcode reader 123, preventing the liquid from dripping onto the barcode reader 123.

[0082] In some embodiments, optionally, such as Figure 1 , Figure 2 and Figure 5 As shown, the sensor protection assembly 160 includes: a mounting member 161, which is mounted on the chassis body 110, and a sensor 130 is mounted on the mounting member 161, and the mounting member 161 can drive the sensor 130 to rotate relative to the chassis body 110; and a shielding plate 162, which is mounted on the chassis body 110, and the height of the shielding plate 162 is higher than that of the mounting member 161, and the shielding plate 162 can shield the mounting member 161.

[0083] In this embodiment, the structure of the sensor protection assembly 160 is defined. The sensor protection assembly 160 includes a mounting member 161 and a shielding plate 162, wherein the mounting member 161 is used to mount the sensor 130, and the shielding plate 162 is used to shield the sensor 130. Specifically, the mounting member 161 is mounted on the chassis body 110, the sensor 130 is mounted on the mounting member 161, and the shielding plate 162 is mounted on the chassis body 110. The height of the shielding plate 162 is higher than the mounting member 161 and the sensor 130, that is, the shielding plate 162 is located above the sensor 130. In this way, the shielding plate 162 can shield the sensor 130 to prevent liquid from dripping onto the sensor 130, thereby achieving waterproof protection for the sensor 130.

[0084] Furthermore, the mounting component 161 can rotate within a certain angle range relative to the chassis body 110, thereby adjusting the position of the sensor 130 by adjusting the angle of the mounting component 161, making the position of the sensor 130 more compatible with the shield 162, and improving the protective effect of the shield 162.

[0085] In some embodiments, optionally, such as Figure 2 and Figure 5 As shown, the shield 162 has a light-transmitting opening 163, and the sensor 130 is able to emit light. The light-transmitting opening 163 is used to transmit the light emitted by the sensor 130.

[0086] In this embodiment, the structure of the shield 162 is further defined. The sensor 130 in this application is a vehicle presence sensor 130, which emits light to determine whether the vehicle is in the correct position. The shield 162 shields the sensor 130. To allow the light emitted by the sensor 130 to pass through normally, the shield 162 is provided with a light-transmitting opening 163, through which the light emitted by the sensor 130 can pass. Furthermore, when the sensor 130 is located in a position where light cannot pass through the light-transmitting opening 163, the user can adjust the angle of the mounting component 161 to adjust the angle of the sensor 130, thereby adjusting the sensor 130 to a suitable position so that the sensor 130 can normally emit light through the light-transmitting opening 163.

[0087] Furthermore, the sensor 130 is mounted at an angle on the mounting member 161, so that while the shielding member blocks the sensor 130, the light can also be propagated obliquely upward, allowing the light to be emitted from the light-transmitting opening 163.

[0088] A light-transmitting component can be installed at the light-transmitting opening 163 to allow light to pass through normally while preventing liquid from dripping from the opening 163 onto the sensor 130. Alternatively, no component can be installed at the light-transmitting opening 163, and only an opening 172 structure can be created to allow light to pass through the opening 163.

[0089] By providing a light-transmitting opening 163 on the shield 162, the light emitted by the sensor 130 can be emitted through the light-transmitting opening 163, enabling the sensor 130 to function normally.

[0090] In some embodiments, optionally, such as Figure 2 and Figure 5 As shown, the mounting component 161 includes: a base 164, mounted on the chassis body 110; a first mounting plate 165, rotatably mounted on the base 164, with the sensor 130 mounted on the first mounting plate 165; and a locking member 166, mounted on the base 164. When the locking member 166 opens the first mounting plate 165, the first mounting plate 165 can rotate within a preset angle range, and the locking member 166 can lock the first mounting plate 165 at any position within the preset angle range.

[0091] In this embodiment, the structure of the mounting member 161 is defined. The mounting member 161 includes a base 164, a first mounting plate 165, and a locking member 166. The base 164 is mounted on the chassis body 110 and is fixedly connected to the chassis body 110. The first mounting plate 165 is rotatably mounted on the base 164. The base 164 has slide rails on both sides, and the first mounting plate 165 can rotate relative to the base 164 along the slide rails. The sensor 130 is mounted on the side of the first mounting plate 165 facing the shield 162. The position of the sensor 130 can be adjusted by rotating the first mounting plate 165. The locking member 166 is mounted on the base 164 and can lock the first mounting plate 165 in an appropriate position. When the locking member 166 opens the first mounting plate 165, the first mounting plate 165 can rotate relative to the base 164 within a preset angle range. When the user needs to adjust the position of the sensor 130, the user first opens the locking member 166 to allow the first mounting plate 165 to rotate, then adjusts the first mounting plate 165 to the appropriate position, and then locks the first mounting plate 165 in that appropriate position using the locking member 166 to keep the first mounting plate 165 fixed. The locking member 166 can be a screw.

[0092] By providing a first mounting plate 165 and a locking member 166 that can lock the first mounting plate 165 to the base 164 in the mounting member 161, the position of the first mounting plate 165 can be adjusted, thereby adjusting the position of the sensor 130, so that the sensor 130 can still emit light normally through the light-transmitting hole 163 while being blocked by the blocking plate 162.

[0093] In some embodiments, optionally, such as Figure 1 , Figure 7 and Figure 8 As shown, the inverter protection assembly 170 includes: a housing 171, mounted on the chassis body 110, the housing 171 having a mounting cavity, the inverter 140 being located in the mounting cavity, and the top of the housing 171 having an opening 172; and a cover 173, detachably connected to the housing 171, the cover 173 being able to open or close the opening 172.

[0094] In this embodiment, the structure of the inverter protection component 170 is defined. The inverter protection component 170 is a box-shaped structure with an internal cavity. The inverter protection component 170 includes a housing 171 and a cover 173. The housing 171 is mounted on the chassis body 110 and has a mounting cavity. The inverter 140 is located in the mounting cavity and is connected to the housing 171.

[0095] Furthermore, the top of the enclosure 171 has an opening 172 that communicates with the mounting cavity, allowing the user to perform maintenance on the inverter 140 through the opening 172. A cover 173 is detachably connected to the enclosure 171. When the cover 173 is attached to the enclosure 171, it closes the opening 172, and together with the enclosure 171, it shields the inverter 140 to prevent liquid from dripping onto it. When the cover 173 is detached from the enclosure 171, it opens the opening 172, allowing the user to observe or perform maintenance on the inverter 140 through the opening 172. The enclosure 171 can be connected to the user's enclosure 171 using screws or other fasteners.

[0096] In some embodiments, optionally, such as Figure 7 and Figure 8 As shown, the enclosure 171 includes: a base plate 175, which is installed on the chassis body 110, and the frequency converter 140 is installed on the base plate 175 or the chassis body 110; a protective cover 176, which is connected to the base plate 175, and the base plate 175 and the protective cover 176 together form an installation cavity, with an opening 172 located on the top of the protective cover 176.

[0097] In this embodiment, the structure of the enclosure 171 is defined. The enclosure 171 includes a base plate 175 and a protective cover 176. The base plate 175 is used to mount the frequency converter 140, and the protective cover 176 is used to protect the frequency converter 140. Specifically, the base plate 175 is mounted on the chassis body 110, the frequency converter 140 is mounted on the base plate 175, and the protective cover 176 is connected to the base plate 175 or the chassis body 110. The protective cover 176 surrounds the periphery of the frequency converter 140, and the base plate 175 and the protective cover 176 together form a mounting cavity, with an opening 172 located at the top of the protective cover 176. Both the base plate 175 and the protective cover 176 can be made of metal plates. The base plate 175 is connected to the chassis body 110 by screws or other connectors, and the protective cover 176 can be connected to the base plate 175 by screws.

[0098] By providing a base plate 175 and a protective cover 176 connected to the base plate 175 in the enclosure 171, the bottom and periphery of the frequency converter 140 can be protected by the base plate 175 and the protective cover 176, respectively.

[0099] In one possible embodiment, the cover 173 and the protective cover 176 are an integral structure, and the cover 173 and the protective cover 176 are detachably connected to the base plate 175 as an integral structure.

[0100] In some embodiments, optionally, such as Figure 7 and Figure 8As shown, the cover 173 has a baffle 177. When the cover 173 is connected to the housing 171, the baffle 177 is located outside the mounting cavity and extends in the direction toward the bottom plate 175.

[0101] In this embodiment, the structure of the cover 173 is defined. The cover 173 has a guide plate 177 for guiding liquid flow. Understandably, when liquid continuously drips onto the cover 173, a certain amount of liquid will accumulate on the cover 173. To prevent liquid accumulation on the cover 173, this application provides a guide plate 177 in the cover 173 to guide the liquid to a position away from the inverter 140. Specifically, the upper surface of the guide plate 177 has an angle with the horizontal plane, and the guide plate 177 extends in a direction toward the base plate 175, that is, the guide plate 177 extends obliquely downward. The guide plate 177 is located outside the mounting cavity, so that the liquid accumulated on the cover 173 can flow along the guide plate 177 to a position away from the housing 171 under the action of gravity, and the liquid will not flow into the mounting cavity.

[0102] By providing a guide plate 177 in the cover 173, the liquid can be guided through the guide plate 177, which reduces the amount of liquid accumulated on the cover 173 and guides the liquid to a position away from the box 171, preventing the liquid from dripping into the mounting cavity.

[0103] In some embodiments, the protective cover 176 and the cover 173 are optionally provided with heat dissipation vents, which are in communication with the mounting cavity.

[0104] In this embodiment, the structures of the protective cover 176 and the cover 173 are further defined. Understandably, the inverter 140 generates heat during operation. Since the inverter 140's protective components are nearly enclosed, to dissipate heat from the inverter 140, this application provides heat dissipation structures on both the protective cover 176 and the cover 173. Specifically, both the protective cover 176 and the cover 173 are provided with heat dissipation vents that communicate with the mounting cavity. Thus, heat is dissipated from the inverter 140 through these vents, preventing overheating and ensuring the inverter 140 can operate normally.

[0105] In some embodiments, optionally, such as Figure 7 As shown, the base plate 175 includes: a second mounting plate 178 on which the frequency converter 140 is mounted; and a support member 179 on which the chassis body 110 is mounted. The support member 179 is used to support the second mounting plate 178 so that there is a gap between the second mounting plate 178 and the chassis body 110.

[0106] In this embodiment, the structure of the base plate 175 is defined. The base plate 175 includes a second mounting plate 178 and a support member 179. The support member 179 supports the second mounting plate 178, and the frequency converter 140 is mounted on the second mounting plate 178. Specifically, the support member 179 is mounted on the chassis body 110, and the second mounting plate 178 is connected to the top of the support member 179. The support member 179 supports the second mounting plate 178, so that there is a gap between the second mounting plate 178 and the chassis body 110. The frequency converter 140 is mounted on the second mounting plate 178. Since there is a gap between the second mounting plate 178 and the chassis body 110, that is, the second mounting plate 178 is in a suspended state, the heat dissipation effect of the second mounting plate 178 can be improved, thereby achieving heat dissipation for the frequency converter 140. It can also reduce the possibility of liquid entering the mounting cavity from the gap between the second mounting plate 178 and the protective cover 176.

[0107] The support member 179 can be integrally formed with the second mounting plate 178 by sheet metal, or it can be connected to the second mounting plate 178 by screws or other connecting parts.

[0108] In one possible embodiment, the water-resistant structure for the sensitive components of the mother car of this invention mainly consists of five parts: a protective cover for the photoelectric group at the front of the car (i.e., the first shielding component 151), a reflector protective cover (i.e., the second shielding component 152), a daughter car in-situ sensor protection assembly (i.e., the sensor protection assembly 160), a code reader protective cover (i.e., the third shielding component 154), and a frequency converter protective cover assembly (i.e., the frequency converter protection assembly 170). Each component is bolted to the relevant position on the mother car in the mother car (i.e., the shuttle car 100), such as... Figure 1 and Figure 2 As shown. The front photoelectric group protective cover is installed at the rear of the front of the vehicle, and is covered by a sheet metal part (i.e., the first shield 151) to cover the photoelectric group (i.e., photoelectric component 121) on each side;

[0109] The reflector protective cover is installed on both sides of the rear of the other side of the front of the vehicle. It is also covered by a sheet metal part (i.e., the second shielding part 152) to ensure that the sensing system composed of the photoelectric assembly and the reflector 122 can function normally. Figure 3 and Figure 4 As shown.

[0110] The vehicle-mounted sensor protection assembly consists of a mounting plate at a certain angle (i.e., the first mounting plate 165) and a pedal (i.e., a shielding plate 162). The sensor 130 is mounted on the mounting plate and can rotate at a certain angle. The top pedal shields the sensor 130 to prevent water droplets from falling on it. Simultaneously, the pedal has an opening (i.e., opening 172) to allow light beams to escape, ensuring the sensor 130 functions normally. Figure 5 As shown.

[0111] The barcode reader protective cover is made of a nylon component (i.e., the third shield 154). The mating surface of the barcode reader protective cover can precisely hold the barcode reader 123 in place. A slope (i.e., the second guide surface 155) is provided on the top of the barcode reader protective cover to allow dripping water to flow downwards, preventing damage to the mirror surface of the barcode reader 123. Figure 6 As shown.

[0112] The inverter protective cover assembly consists of a mounting base (i.e., base plate 175), an inverter waterproof cover (i.e., protective cover 176), and a top cover (i.e., cover body 173). The inverter 140 is mounted on the mounting base to prevent water accumulation at the bottom. The inverter waterproof cover surrounds the inverter 140 on all four sides, while the top cover is mounted on top of the inverter 140, completely covering it. Furthermore, gaps (i.e., heat dissipation vents) are left around the joint between the top cover and the waterproof cover to ensure good heat dissipation for the inverter 140. During maintenance, only the top cover needs to be removed for easy access. Figure 7 As shown.

[0113] The above protective structure effectively protects the sensitive components of the mother car. Combined with the protective structures of other parts, the mother and daughter cars achieve a drip-proof effect, enabling them to operate stably and efficiently in dripping warehouse environments.

[0114] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0115] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present 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.

[0116] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shuttle vehicle, characterized in that, include: Chassis main body; The component assembly is mounted on the chassis body; At least one sensor; At least one frequency converter; A shielding assembly is installed on the chassis body, and the shielding assembly is used to shield the component group; At least one sensor protection component is mounted on the chassis body, the sensor is mounted on the corresponding sensor protection component, and a portion of the sensor protection component is located on top of the sensor and obstructs the sensor; At least one inverter protection component is installed on the chassis body, and the inverter is installed on the inverter protection component and located within the inverter protection component.

2. The shuttle of claim 1, wherein, The component group includes: The optoelectronic components are installed on the chassis body; The shielding assembly includes: A first shielding member is installed on the chassis body, and at least a portion of the first shielding member is located on top of the optoelectronic component and shields the optoelectronic component.

3. The shuttle of claim 1, wherein, The component group also includes: A reflector is mounted on the chassis body; The shielding assembly also includes: A second shielding member is installed on the chassis body, and at least a portion of the second shielding member is located on top of the reflector and blocks the reflector.

4. The shuttle vehicle according to claim 3, characterized in that, The second shielding member has a first guide surface, which has an angle with the horizontal plane and extends in a direction away from the reflector towards the bottom of the chassis body.

5. The shuttle of claim 1, wherein, The component group also includes: The barcode reader is installed on the chassis body; The shielding assembly also includes: A third blocking component is installed on the chassis body, and at least a portion of the third blocking component is located on top of the barcode reader and blocks the barcode reader.

6. The shuttle vehicle according to claim 5, characterized in that, The third shielding member has a second guide surface, which has an angle with the horizontal plane and extends in a direction away from the barcode reader, toward the bottom of the chassis body.

7. The shuttle according to any one of claims 1 to 6, characterized in that, The sensor protection component includes: The mounting component is installed on the chassis body, the sensor is installed on the mounting component, and the mounting component can drive the sensor to rotate relative to the chassis body; A shield is installed on the chassis body. The height of the shield is higher than that of the mounting component, and the shield can cover the mounting component.

8. The shuttle vehicle according to claim 7, characterized in that, The shield has a light-transmitting opening, and the sensor is capable of emitting light. The light-transmitting opening is used to allow the light emitted by the sensor to pass through.

9. The shuttle vehicle according to claim 8, characterized in that, The mounting component includes: The base is installed on the chassis body; A first mounting plate is rotatably mounted on the base, and the sensor is mounted on the first mounting plate; A locking member is installed on the base. When the locking member opens the first mounting plate, the first mounting plate can rotate within a preset angle range, and the locking member can lock the first mounting plate at any position within the preset angle range.

10. The shuttle according to any one of claims 1 to 6, characterized in that, The inverter protection components include: The enclosure is mounted on the chassis body, the enclosure has a mounting cavity, the frequency converter is located in the mounting cavity, and the top of the enclosure has an opening; A cover, detachably connected to the housing, is capable of opening or closing the opening.

11. The shuttle vehicle according to claim 10, characterized in that, The enclosure includes: A base plate is installed on the chassis body, and the frequency converter is installed on the base plate; A protective cover is connected to the base plate or the chassis body. The base plate and the protective cover together form the mounting cavity, and the opening is located at the top of the protective cover.

12. The shuttle vehicle according to claim 11, characterized in that, The cover has a flow guide plate, which, when the cover is connected to the housing, is located outside the mounting cavity and extends toward the base plate.

13. The shuttle vehicle according to claim 11, characterized in that, Both the protective cover and the cover are provided with heat dissipation vents, which are connected to the mounting cavity.

14. The shuttle vehicle according to claim 11, characterized in that, The base plate includes: The second mounting plate is on which the frequency converter is mounted. A support member is installed on the chassis body, and the support member is used to support the second mounting plate so that there is a gap between the second mounting plate and the chassis body.