A purging device for a lidar
By designing a purging device for lidar and utilizing gas jet technology to automatically clean the optical module, the problem of reduced scanning clarity and recognition caused by dust on the mirror surface was solved, ensuring the intelligence and operating speed of the unmanned forklift.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JIUYAO INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-07
Smart Images
Figure CN224463342U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of lidar purging, and specifically relates to a lidar purging device. Background Technology
[0002] Unmanned forklifts, also known as automated guided forklifts, are one of the core pieces of equipment for logistics automation and intelligent warehousing. Unmanned forklifts achieve unmanned handling operations through advanced navigation technology, sensor systems, and control systems. LiDAR is an important component of the sensor system. In complex environments, LiDAR technology can effectively solve problems such as positioning and collision avoidance of automated forklifts, thereby realizing unmanned logistics operations.
[0003] LiDAR typically includes an optical module and a control and processing module. The optical module includes laser emitting and receiving components and a mirror through which the laser beam can pass. However, as the operating time of unmanned forklifts increases, dust may adhere to the mirror of the LiDAR. Since the dust adhering to the mirror affects the scanning clarity and recognition of the LiDAR, the mirror of the LiDAR needs to be cleaned regularly.
[0004] Currently, the LiDAR mirrors are typically cleaned manually using a cleaning cloth. This not only increases the workload for workers but also affects the operating speed of the automated forklift and reduces its intelligence level. Furthermore, manual cleaning requires a high degree of softness in the cleaning cloth; using a less soft cloth can scratch the mirror, further affecting the LiDAR's scanning clarity and recognition accuracy. Therefore, ensuring the cleanliness of the LiDAR mirrors, maintaining the intelligence level of the automated forklift, and ensuring the LiDAR's scanning clarity and recognition accuracy have become urgent technical problems to be solved. Utility Model Content
[0005] This application provides a purging device for lidar to ensure the cleanliness of the lidar surface, the intelligence level of unmanned forklifts, and the clarity and recognition of lidar scanning.
[0006] The technical solution adopted in this application is as follows:
[0007] A purging device for a lidar includes an optical module and a control and processing module located above the optical module. The purging device includes a mounting base and an air box. The lidar is mounted on the mounting base, and the air box is located at the bottom of the control and processing module and above the optical module. The air box has a first air cavity and a second air cavity that are independent of each other. Both the first air cavity and the second air cavity extend circumferentially along the optical module, and the second air cavity is located outside the first air cavity. The bottom of the air box has a first air outlet communicating with the first air cavity and a second air outlet communicating with the second air cavity. The air outlet of the first air outlet faces the upper part of the optical module, and the air outlet of the second air outlet faces the lower part of the optical module.
[0008] By adopting the above technical solution, after the blowing device of this application is installed on the unmanned forklift, the air box is connected to the air supply device pre-installed on the unmanned forklift, that is, the air supply device is connected to the first air chamber and the second air chamber; when cleaning the lidar, the air supply device delivers gas to the first air chamber and the second air chamber, so that the gas in the first air chamber is discharged through the first air outlet and sprayed onto the upper part of the optical module to achieve blowing of the upper part of the optical module, thereby causing the dust adhering to the upper part of the optical module to separate from the optical module under the action of the airflow. The gas in the second air chamber is discharged through the second air outlet and sprayed onto the lower part of the optical module to achieve blowing of the lower part of the optical module, thereby causing the dust adhering to the lower part of the optical module to separate from the optical module under the action of the airflow, thereby achieving cleaning of the dust adhering to the optical module.
[0009] By using the blowing device described in this application to blow away dust adhering to the optical module, the need for personnel to clean the mirror surface of the optical module with a cleaning cloth is avoided, thus preventing scratches on the mirror surface and ensuring the clarity and recognition of the LiDAR scanning surface. This also reduces the workload of personnel. Furthermore, it avoids the need to stop the unmanned forklift. That is, when the blowing device of the application cleans the mirror surface of the optical module, there is no need to stop the unmanned forklift, thereby ensuring the operating speed of the unmanned forklift and maintaining its level of intelligence.
[0010] Optionally, the purging device further includes a first solenoid valve and a second solenoid valve. The outlet of the first solenoid valve is connected to two first pipelines through a first tee connector. Each first pipeline is connected to the air box and communicates with the first air chamber. The connection positions of the two first pipelines to the air box are spaced apart. The outlet of the second solenoid valve is connected to two second pipelines through a second tee connector. Each second pipeline is connected to the air box and communicates with the second air chamber. The connection positions of the two second pipelines to the air box are spaced apart.
[0011] By adopting the above technical solution, after the purging device in this application is installed on the unmanned forklift, the first solenoid valve and the second solenoid valve are connected to the air supply device preset on the unmanned forklift, so that the gas generated by the air supply device enters the first air chamber through the first solenoid valve and the first pipeline, and the gas generated by the air supply device enters the second air chamber through the second solenoid valve and the second pipeline.
[0012] Since the gas generated by the gas supply equipment enters the first gas chamber through the first solenoid valve and the second gas chamber through the second solenoid valve, the gas pressure of the first and second gas outlets can be adjusted by adjusting the opening degree of the first and second solenoid valves, thereby improving the purging effect on the optical module.
[0013] Because the connection points of the two first pipes to the air box are spaced apart, the gas flowing through the first solenoid valve is divided into two paths and enters the first air chamber, so as to keep the pressure constant as much as possible when the gas flows out through multiple first air outlets; because the connection points of the two second pipes to the air box are spaced apart, the gas flowing through the second solenoid valve is divided into two paths and enters the second air chamber, so as to keep the pressure constant as much as possible when the gas flows out through multiple second air outlets, so as to ensure the purging effect on the optical module.
[0014] Optionally, the purging device further includes an air inlet pipe, which is connected to the air inlets of the first solenoid valve and the second solenoid valve.
[0015] By adopting the above technical solution, since the air intake pipe is connected to the first solenoid valve and the second solenoid valve, the air supply device pre-installed in the unmanned forklift can be connected to the air intake pipe through a pipeline to supply air to the first solenoid valve and the second solenoid valve. This reduces the difficulty of connecting the first solenoid valve and the second solenoid valve with the air supply device, and reduces the number of pipelines that need to be set for the unmanned forklift, thereby reducing the production cost of the unmanned forklift equipped with the purging device of this application.
[0016] Optionally, the central axis of the first vent and the central axis of the second vent are both set at a 45° angle to the central axis of the optical module.
[0017] By adopting the above technical solution, since the central axis of the first air outlet and the central axis of the second air outlet are both set at a 45° angle with the central axis of the optical module, the gas flowing out through the first air outlet and the second air outlet is sprayed obliquely onto the surface of the optical module. On the one hand, this improves the purging effect on the optical module, and on the other hand, it reduces the interference of airflow on the reflected signal.
[0018] Optionally, the air box includes a base plate and a cover plate. The base plate is provided with a first air-containing groove and a second air-containing groove located outside the first air-containing groove. The first air outlet and the second air outlet are both provided on the base plate. The cover plate is provided on the base plate so that the first air-containing groove and the second air-containing groove form the first air cavity and the second air cavity respectively under the action of the cover plate.
[0019] By adopting the above technical solution, since the gas box includes a bottom plate and a cover plate, the bottom plate is provided with a first gas trough and a second gas trough, and the first gas trough and the second gas trough form a first air cavity and a second air cavity respectively under the action of the cover plate, thereby reducing the production difficulty and production cost of the gas box, while improving the production efficiency of the gas box.
[0020] Optionally, a sealing ring is provided between the base plate and the cover plate, and the sealing ring extends continuously along the circumference of the first air groove and the second air groove.
[0021] By adopting the above technical solution, the sealing performance between the base plate and the cover plate is increased due to the sealing ring provided between them. Furthermore, the sealing ring extends continuously along the circumference of the first and second gas grooves, thereby increasing the sealing performance of the first and second gas chambers. This prevents gas from leaking through the gap between the base plate and the cover plate, thus ensuring the pressure of the gas flowing out through the first and second air outlets, and ensuring the purging effect on the optical module.
[0022] Optionally, the optical module has a detection area and a non-detection area along its circumference, the gas box has an installation notch in its circumference, the installation notch is set corresponding to the non-detection area, and multiple connecting ribs are spaced apart on the inner side of the gas box, the connecting ribs are fixedly connected to the control and processing module by fasteners.
[0023] By adopting the above technical solution, since the gas box has an installation notch in its circumferential direction, when installing the gas box to the control and processing module, the gas box can be pushed to the bottom of the control and processing module through the installation notch, thus facilitating the installation of the gas box. Since the installation notch corresponds to the non-detection area, the first and second air outlets are mainly concentrated in the detection area of the optical module, ensuring the purging effect of the detection area, and thus ensuring the purging effect of the optical module. Since multiple connecting ribs are spaced apart on the inner side of the gas box, and the connecting ribs are fixedly connected to the control and processing module by fasteners, the gas box is fixedly connected to the control and processing module, and the connection stability between the gas box and the control and processing module is increased.
[0024] Optionally, the mounting base includes a mounting box, the interior of which has a downward-facing mounting cavity, and the control and processing module is located in the mounting cavity.
[0025] By adopting the above technical solution, since the control and processing module is located in the mounting cavity, the mounting box can protect the control and processing module, preventing damage to the lidar caused by the expansion of the control and processing module from other objects, thereby ensuring the lifespan of the lidar. Furthermore, because the opening of the mounting cavity faces downwards, it facilitates the installation of the control and processing module and prevents dust accumulation within the cavity, ensuring its cleanliness.
[0026] Optionally, the mounting base further includes a first baffle located below the optical module and a second baffle located above the optical module, both of which protrude from the outer periphery of the optical module.
[0027] By adopting the above technical solution, since both the first baffle and the second baffle protrude from the outer periphery of the optical module, they can protect the optical module from damage caused by collisions with other objects, thus ensuring the service life of the optical module. Furthermore, since the second baffle is located above the optical module, it can shield the upper part of the optical module to prevent dust falling directly onto it, thus ensuring the cleanliness of the optical module.
[0028] Optionally, the outer periphery of the first baffle is provided with a first edge, which extends along the circumferential direction of the first baffle.
[0029] And / or, the outer periphery of the second baffle is provided with a second edge, which extends circumferentially along the second baffle.
[0030] By adopting the above technical solution, since the first edge is provided on the first baffle and extends circumferentially along the first baffle, the first edge can increase the structural strength of the first baffle to ensure the protective effect of the first baffle on the optical module; in addition, the provision of the first edge can also increase the thickness of the side of the first baffle to avoid the first baffle causing injury to the staff.
[0031] Since the second edge is provided on the second baffle and extends circumferentially along the second baffle, the second edge can increase the structural strength of the second baffle to ensure the protective effect of the second baffle on the optical module; in addition, the provision of the second edge can also increase the thickness of the side of the second baffle to avoid the second baffle causing injury to the staff.
[0032] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:
[0033] 1. The lidar purging device of this application includes a mounting base and an air box. The lidar is mounted on the mounting base, and the air box is located at the bottom of the control and processing module and above the optical module. The air box has an independent first air cavity and a second air cavity, both of which extend circumferentially along the optical module. The second air cavity is located outside the first air cavity. The bottom of the air box has a first air outlet communicating with the first air cavity and a second air outlet communicating with the second air cavity. The air outlet of the first air outlet faces the upper part of the optical module, and the air outlet of the second air outlet faces the upper part of the optical module. The lower part of the block then enables the blowing and purging of the optical module, avoiding the need for staff to clean the mirror surface of the optical module with a cleaning cloth, thus preventing scratches and ensuring the clarity and recognition of the LiDAR scanning surface. This also reduces the workload of staff. Furthermore, it avoids the need to stop the unmanned forklift. In other words, the blowing and purging device in the application does not require the unmanned forklift to be stopped when cleaning the mirror surface of the optical module, thereby ensuring the operating speed and intelligence level of the unmanned forklift.
[0034] 2. The purging device in this application further includes a first solenoid valve and a second solenoid valve. The outlet of the first solenoid valve is connected to two first pipelines through a first tee connector. Each first pipeline is connected to an air box and is connected to a first air chamber. The connection positions of the two first pipelines to the air box are spaced apart. The outlet of the second solenoid valve is connected to two second pipelines through a second tee connector. Each second pipeline is connected to an air box and is connected to a second air chamber. The connection positions of the two second pipelines to the air box are spaced apart. Thus, the opening degree of the first solenoid valve and the second solenoid valve can be adjusted to adjust the outlet pressure of the first and second outlets, thereby improving the purging effect on the optical module.
[0035] 3. The purging device in this application also includes an air inlet pipe, which is connected to the air inlet of the first solenoid valve and the second solenoid valve. This allows the air supply equipment pre-installed on the unmanned forklift to be connected to the air inlet pipe through a pipeline, thereby supplying air to the first solenoid valve and the second solenoid valve. This reduces the difficulty of connecting the first solenoid valve and the second solenoid valve to the air supply equipment and reduces the number of pipelines that need to be installed for the unmanned forklift, thereby reducing the production cost of the unmanned forklift equipped with the purging device in this application. Attached Figure Description
[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0037] Figure 1 This is a schematic diagram of the purging device described in one embodiment of this application;
[0038] Figure 2 This is a schematic diagram of the purging device described in one embodiment of this application from another perspective;
[0039] Figure 3 This is a partial structural diagram of the purging device described in one embodiment of this application, wherein the housing is omitted;
[0040] Figure 4 This is a schematic diagram of the structure of the box body according to one embodiment of this application;
[0041] Figure 5 This is a schematic diagram of the structure of the gas box described in one embodiment of this application;
[0042] Figure 6 This is a schematic diagram of the structure of the base plate according to one embodiment of this application, mainly showing an example of the sealing ring;
[0043] Figure 7 This is a schematic diagram of the structure of the base plate according to another embodiment of this application, mainly showing another implementation example of the sealing ring;
[0044] Figure 8 This is a schematic diagram of the structure of the cover plate described in one embodiment of this application;
[0045] Figure 9 This is another structural view of the purging device described in one embodiment of this application, with the lid omitted.
[0046] Figure label:
[0047] 1. LiDAR; 11. Optical module; 12. Control and processing module; 121. Support frame; 2. Mounting base; 21. Mounting box; 211. Box body; 212. Box cover; 213. Through hole; 22. First baffle; 221. First edge; 222. Reinforcing rib; 23. Second baffle; 231. Second edge; 3. Air box; 31. Base plate; 311. First air reservoir; 312. First air outlet; 313. Second air reservoir; 314. Second air outlet; 315. Receiving groove; 32. Cover plate; 321. Raised rib; 33. Sealing ring; 34. Mounting notch; 35. Connecting rib position; 4. First solenoid valve; 41. First tee connector; 411. First pipeline; 5. Second solenoid valve; 51. Second tee connector; 511. Second pipeline; 6. Air inlet pipe. Detailed Implementation
[0048] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0049] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0050] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0052] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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 can be combined in any suitable manner in one or more embodiments or examples.
[0053] Reference Figures 1 to 9 A purging device for a lidar is disclosed. The lidar 1 includes an optical module 11 and a control and processing module 12 located above the optical module 11. The optical module 11 is hemispherical, and its exterior is a mirror surface that allows a laser beam to pass through. The purging device includes a mounting base 2 and an air box 3. The lidar 1 is mounted on the mounting base 2, and the air box 3 is located at the bottom of the control and processing module 12 and above the optical module 11. The air box 3 has an independent first air cavity and a second air cavity. Both the first and second air cavities extend circumferentially along the optical module 11, and the second air cavity is located outside the first air cavity. The bottom of the air box 3 has a first air outlet 312 communicating with the first air cavity and a second air outlet 314 communicating with the second air cavity. The air outlet 312 is directed towards the upper part of the optical module 11, and the air outlet 314 is directed towards the lower part of the optical module 11.
[0054] It is understood that the air box 3 is arranged circumferentially along the optical module 11, and multiple first air outlets 312 and second air outlets 314 are arranged circumferentially along the air box 3. The above-mentioned "the air outlet direction of the first air outlet 312 is towards the upper part of the optical module 11, and the air outlet direction of the second air outlet 314 is towards the lower part of the optical module 11" means that the gas flowing out through the first air outlet 312 is sprayed onto the upper part of the optical module mirror, and the gas flowing out through the second air outlet 314 is sprayed onto the lower part of the optical module 11 mirror, so that the gas flowing out through the first air outlet 312 and the second air outlet 314 respectively blows the upper and lower parts of the mirror.
[0055] After the blowing device of this application is installed on the unmanned forklift, the air box 3 is connected to the air supply device pre-installed on the unmanned forklift, that is, the air supply device is connected to the first air chamber and the second air chamber. When cleaning the lidar 1, the air supply device delivers gas to the first air chamber and the second air chamber, so that the gas in the first air chamber is discharged through the first air outlet 312 and sprayed onto the upper part of the optical module 11 to blow away the upper part of the optical module 11, thereby separating the dust adhering to the upper part of the optical module 11 from the optical module 11 under the action of the airflow. The gas in the second air chamber is discharged through the second air outlet 314 and sprayed onto the lower part of the optical module 11 to blow away the lower part of the optical module 11, thereby separating the dust adhering to the lower part of the optical module 11 from the optical module 11 under the action of the airflow, thereby cleaning the dust adhering to the optical module 11.
[0056] It should be noted that the aforementioned air supply equipment can be an oil-free air compressor pre-installed in the unmanned forklift, which can provide the purging device with oil-free, water-free, dry and pressure-stable high-purity compressed air; it can also be other compression equipment that can provide gas.
[0057] By using the blowing device described in this application to blow away the dust adhering to the optical module 11, the need for personnel to clean the mirror surface of the optical module 11 with a cleaning cloth is avoided, thus preventing the mirror surface of the optical module 11 from being scratched. This ensures the scanning clarity and recognition accuracy of the lidar 1, while reducing the workload of personnel. Furthermore, it avoids the need to stop the unmanned forklift. That is, when the blowing device in this application cleans the mirror surface of the optical module 11, there is no need to stop the unmanned forklift, thereby ensuring the operating speed of the unmanned forklift and ensuring the level of intelligence of the unmanned forklift.
[0058] In a preferred embodiment, refer to Figure 3 The purging device also includes a first solenoid valve 4 and a second solenoid valve 5. The outlet of the first solenoid valve 4 is connected to two first pipes 411 through a first tee connector 41. Each first pipe 411 is connected to the air box 3 and is connected to the first air chamber. The connection positions of the two first pipes 411 and the air box 3 are spaced apart. The outlet of the second solenoid valve 5 is connected to two second pipes 511 through a second tee connector 51. Each second pipe 511 is connected to the air box 3 and is connected to the second air chamber. The connection positions of the two second pipes 511 and the air box 3 are spaced apart.
[0059] Understandably, one port of the first three-way connector 41 is connected to the air outlet of the first solenoid valve 4, and the remaining two ports of the first three-way connector 41 are respectively connected to the two first pipelines 411; one port of the second three-way connector 51 is connected to the air outlet of the second solenoid valve 5, and the remaining two ports of the second three-way connector 51 are respectively connected to the two second pipelines 511.
[0060] After the purging device of this application is installed on the unmanned forklift, the first solenoid valve 4 and the second solenoid valve 5 are connected to the air supply device preset on the unmanned forklift, so that the gas generated by the air supply device enters the first air chamber through the first solenoid valve 4 and the first pipeline 411, and the gas generated by the air supply device enters the second air chamber through the second solenoid valve 5 and the second pipeline 511.
[0061] Since the gas generated by the gas supply device enters the first gas chamber through the first solenoid valve 4 and the second gas chamber through the second solenoid valve 5, the opening degree of the first solenoid valve 4 and the second solenoid valve 5 can be adjusted to adjust the outlet pressure of the first outlet 312 and the second outlet 314, thereby improving the blowing effect on the optical module 11.
[0062] Because the connection points of the two first pipes 411 and the air box 3 are spaced apart, the gas flowing through the first solenoid valve 4 is divided into two paths and enters the first air chamber, so as to keep the pressure constant as much as possible when the gas flows out through the multiple first air outlets 312; because the connection points of the two second pipes 511 and the air box 3 are spaced apart, the gas flowing through the second solenoid valve 5 is divided into two paths and enters the second air chamber, so as to keep the pressure constant as much as possible when the gas flows out through the multiple second air outlets 314, so as to ensure the purging effect on the optical module 11.
[0063] Specifically, refer to Figure 3 The two first pipes 411 are connected to the air box 3 at their respective positions on opposite sides of the optical module 11, and the two second pipes 511 are connected to the air box 3 at their respective positions on opposite sides of the optical module 11. The connection positions of the first pipes 411 and the air box 3 are staggered with the connection positions of the second pipes 511 and the air box 3, so as to keep the gas pressure flowing out through the multiple first air outlets 312 and the gas pressure flowing out through the multiple second air outlets 314 as consistent as possible.
[0064] Furthermore, refer to Figure 1 and Figure 3The purging device also includes an air inlet pipe 6, which is connected to the air inlets of the first solenoid valve 4 and the second solenoid valve 5. That is, one end of the air inlet pipe 6 is connected to the first solenoid valve 4 and the second solenoid valve 5, and the other end of the air inlet pipe 6 is connected to the air outlet of the air supply device through a pipeline. This allows the air supply device pre-installed on the unmanned forklift to be connected to the air inlet pipe 6 through a pipeline to supply air to the first solenoid valve 4 and the second solenoid valve 5. This reduces the difficulty of connecting the first solenoid valve 4 and the second solenoid valve 5 to the air supply device and reduces the number of pipelines that need to be set for the unmanned forklift, thereby reducing the production cost of the unmanned forklift equipped with the purging device of this application.
[0065] Of course, in other embodiments, the first solenoid valve 4 and the second solenoid valve 5 can also be connected to the gas supply equipment through different pipelines.
[0066] In a preferred embodiment, the central axis of the first vent 312 and the central axis of the second vent 314 are both set at a 45° angle to the central axis of the optical module 11, thereby causing the gas flowing out through the first vent 312 and the second vent 314 to be sprayed obliquely onto the surface of the optical module 11. This improves the purging effect on the optical module 11 on the one hand, and reduces the interference of airflow on the reflected signal on the other hand.
[0067] Of course, in other embodiments, the central axis of the first vent 312 and the central axis of the second vent 314 can also be set at other angles with the central axis of the optical module 11, such as 30°, 40°, etc.
[0068] This application does not specifically limit the structure of the air box 3; preferably, refer to... Figure 3 , Figure 6 and Figure 7 The air box 3 includes a base plate 31 and a cover plate 32. The base plate 31 is provided with a first air-containing groove 311 and a second air-containing groove 313 located outside the first air-containing groove 311. A first air outlet 312 and a second air outlet 314 are both provided on the base plate 31, with the first air outlet 312 corresponding to the first air-containing groove 311 and the second air outlet 314 corresponding to the second air-containing groove 313. The cover plate 32 is provided on the base plate 31, so that the first air-containing groove 311 and the second air-containing groove 313 form a first air chamber and a second air chamber respectively under the action of the cover plate 32.
[0069] Since the air box 3 includes a base plate 31 and a cover plate 32, the base plate 31 is provided with a first air-containing groove 311 and a second air-containing groove 313, and the first air-containing groove 311 and the second air-containing groove 313 respectively form a first air cavity and a second air cavity under the action of the cover plate 32, thereby reducing the production difficulty and production cost of the air box 3, and improving the production efficiency of the air box 3.
[0070] Specifically, the cover plate 32 is provided with two pipe joints corresponding to the first air chamber 311 and the second air chamber 313 respectively. The pipe joint provided to the first air chamber 311 can communicate with the first air chamber, and the pipe joint provided to the second air chamber 313 can communicate with the second air chamber. The two first pipes 411 and the two second pipes 511 are respectively connected to their respective pipe joints.
[0071] Furthermore, refer to Figure 6 and Figure 7 A sealing ring 33 is provided between the base plate 31 and the cover plate 32. The sealing ring 33 extends continuously along the circumference of the first gas groove 311 and the second gas groove 313, thereby increasing the sealing between the base plate 31 and the cover plate 32. The sealing ring 33 extends continuously along the circumference of the first gas groove 311 and the second gas groove 313, thereby increasing the sealing of the first gas chamber and the second gas chamber, so as to avoid the possibility of gas leakage through the gap between the base plate 31 and the cover plate 32. This ensures the pressure of the gas flowing out through the first air outlet 312 and the second air outlet 314, so as to ensure the purging effect on the optical module 11.
[0072] This application does not impose specific limitations on the structure of the sealing ring 33, which can adopt any of the following embodiments:
[0073] Implementation Example 1, in this implementation example, refer to Figure 6 Two sealing rings 33 are provided. One sealing ring 33 is adapted to the shape of the first air groove 311 and is disposed in the first air groove 311. The other sealing ring 33 is adapted to the shape of the second air groove 313 and is disposed in the second air groove 313. After the cover plate 32 is installed on the base plate 31, both sealing rings 33 abut against the cover plate 32 to seal the gap between the base plate 31 and the cover plate 32.
[0074] Implementation Example 2, in this implementation example, refer to Figure 7 A sealing ring 33 is provided, and the sealing ring 33 extends continuously along the circumference of the first air groove 311 and the second air groove 313. After the cover plate 32 is installed on the base plate 31, the two opposite sides of the sealing ring 33 abut against the base plate 31 and the cover plate 32 respectively.
[0075] Furthermore, refer to Figure 7 and Figure 8The base plate 31 is provided with a receiving groove 315, which extends continuously along the circumference of the first air receiving groove 311 and the second air receiving groove 313. The sealing ring 33 is disposed in the receiving groove 315 to increase the stability of the sealing ring 33. The cover plate 32 is provided with a protruding rib 321 that can extend into the receiving groove 315. After the cover plate 32 is installed on the base plate 31, the protruding rib 321 extends into the receiving groove 315 and applies pressure to the sealing ring 33 to deform the sealing ring 33, thereby further increasing the sealing effect of the sealing ring 33 on the base plate 31 and the cover plate 32.
[0076] In other embodiments, the air box 3 can also be an integral structure.
[0077] In a preferred embodiment, refer to Figure 5 and Figure 9 The optical module 11 has a detection area and a non-detection area along its circumference. The air box 3 has an installation notch 34 in its circumference, which corresponds to the non-detection area. The inner side of the air box 3 is provided with multiple connecting ribs 35 at intervals. The connecting ribs 35 are fixedly connected to the control and processing module 12 by fasteners.
[0078] Understandably, the connecting rib 35 is provided with a hole structure so that the fastener can be connected to the control and processing module 12 via the connecting rib 35.
[0079] Because the air box 3 has an installation notch 34 in its circumferential direction, when the air box 3 is installed to the control and processing module 12, it can be pushed to the bottom of the control and processing module 12 through the installation notch 34, so as to facilitate the installation of the air box 3. Because the installation notch 34 is set in the non-detection area, the first air outlet 312 and the second air outlet 314 are mainly concentrated in the detection area of the optical module 11, so as to ensure the purging effect of the detection area, and thus ensure the purging effect of the optical module 11. Because the inner side of the air box 3 is provided with multiple connecting ribs 35 at intervals, and the connecting ribs 35 are fixedly connected to the control and processing module 12 by fasteners, the air box 3 is fixedly connected to the control and processing module 12 on the one hand, and the connection stability between the air box 3 and the control and processing module 12 is increased on the other hand.
[0080] Specifically, the base plate 31 and the cover plate 32 are provided with multiple connecting ribs 35 so that the fasteners can fix the base plate 31 and the cover plate 32.
[0081] This application does not specifically limit the structure of the fastener. Preferably, the fastener is a screw to reduce the difficulty of fixing the air box 3 and increase the connection stability between the air box 3 and the control and processing module 12. In other embodiments, the fastener can also be other structures that can fix the air box 3, such as a snap-fit post.
[0082] This application does not specifically limit the structure of the mounting base 2; preferably, refer to... Figures 1 to 4 The mounting base 2 includes a mounting box 21. The mounting box 21 has a downward-facing mounting cavity. The control and processing module 12 is housed in the mounting cavity, thus protecting the control and processing module 12 from damage caused by the expansion of the control and processing module 12 by other objects, thereby ensuring the service life of the lidar 1. Furthermore, the downward-facing opening of the mounting cavity facilitates the installation of the control and processing module 12 and prevents dust accumulation, ensuring the cleanliness of the mounting cavity.
[0083] Furthermore, refer to Figures 1 to 4 The mounting base 2 also includes a first baffle 22 located below the optical module 11 and a second baffle 23 located above the optical module 11. Both the first baffle 22 and the second baffle 23 protrude from the outer periphery of the optical module 11, thereby protecting the optical module 11 from damage caused by collisions with other objects, thus ensuring the service life of the optical module 11. Furthermore, since the second baffle 23 is located above the optical module 11, it can shield the upper part of the optical module 11 to prevent dust falling directly onto the optical module 11, thus ensuring the cleanliness of the optical module 11.
[0084] Furthermore, refer to Figure 2 The second baffle 23 is inclined upward from the non-detection area of the optical module 11 toward the detection area to ensure the scanning range of the optical module 11.
[0085] Furthermore, refer to Figures 1 to 4 The first baffle 22 has a first edge 221 on its outer periphery. The first edge 221 extends along the circumference of the first baffle 22, thereby increasing the structural strength of the first baffle 22 to ensure the protective effect of the first baffle 22 on the optical module 11. In addition, the setting of the first edge 221 can also increase the thickness of the side of the first baffle 22 to avoid the first baffle 22 causing injury to the staff.
[0086] Furthermore, refer to Figures 1 to 4The second baffle 23 has a second edge 231 on its outer periphery. The second edge 231 extends along the circumference of the second baffle 23, thereby increasing the structural strength of the second baffle 23 to ensure the protective effect of the second baffle 23 on the optical module 11. In addition, the setting of the second edge 231 can also increase the thickness of the side of the second baffle 23 to avoid the second baffle 23 causing injury to the staff.
[0087] Furthermore, refer to Figures 1 to 4 The mounting box 21 includes a box body 211 and a box cover 212. The box body 211 and the box cover 212 together form a mounting cavity. The first baffle 22 is integrally formed with the box cover 212, and the second baffle 23 is fixedly connected to the box body 211. The non-detection area of the optical module 11 is set towards the box cover 212, and the detection area of the optical module 11 is set away from the box cover 212, so as to reduce the difficulty of installing the control and processing module 12 into the mounting cavity.
[0088] This application does not specifically limit the fixed positions of the first solenoid valve 4 and the second solenoid valve 5. Preferably, refer to Figure 3 The first solenoid valve 4 and the second solenoid valve 5 are both located inside the mounting cavity and are fixedly connected to the cover 212 by screws, so as to facilitate the fixation of the first solenoid valve 4 and the second solenoid valve 5. In other embodiments, the first solenoid valve 4 and the second solenoid valve 5 can also be fixedly connected to the housing 211.
[0089] Furthermore, the housing 211 is provided with a perforated structure corresponding to the air intake pipe 6, so that the air intake pipe 6 can extend out of the mounting cavity through the perforated structure.
[0090] Furthermore, refer to Figure 3 The control and processing module 12 is provided with a support frame 121, which is fixedly connected to the cover 212 by screws to realize the installation of the control and processing module 12 in the mounting cavity.
[0091] This application does not specify the connection method between the box body 211 and the box cover 212. Preferably, the box body 211 is fixedly connected to the box cover 212 by screws to reduce the connection difficulty and increase the connection stability. In other embodiments, the box body 211 can also be connected to the box cover 212 by a snap-fit structure.
[0092] Furthermore, refer to Figure 1 and Figure 3 A reinforcing rib 222 is provided above the first baffle 22. The bottom of the reinforcing rib 222 is fixedly connected to the first baffle 22, and one side of the reinforcing rib 222 is fixedly connected to the cover 212 to increase the stability of the first baffle 22.
[0093] Furthermore, refer to Figure 1 and Figure 3 Both the cover 212 and the first baffle 22 are provided with through holes 213 for bolts to pass through, so that the cover 212 and the first baffle 22 can be fixedly connected to the unmanned forklift by bolts, thereby increasing the stability of the purging device and the lidar 1.
[0094] In other embodiments, the mounting base 2 can also be other frame structures, as long as it can enable the lidar 1 to be mounted on it.
[0095] For any parts not mentioned in this application, existing technologies may be used or referenced.
[0096] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.
[0097] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A purging device for a lidar, wherein the lidar (1) includes an optical module (11) and a control and processing module (12) located above the optical module (11), characterized in that, The purging device includes a mounting base (2) and an air box (3). The lidar (1) is mounted on the mounting base (2). The air box (3) is located at the bottom of the control and processing module (12) and above the optical module (11). The air box (3) has a first air chamber and a second air chamber that are independent of each other. The first air chamber and the second air chamber are both arranged to extend circumferentially along the optical module (11), and the second air chamber is located outside the first air chamber. The bottom of the air box (3) has a first air outlet (312) communicating with the first air chamber and a second air outlet (314) communicating with the second air chamber. The air outlet of the first air outlet (312) is directed toward the upper part of the optical module (11), and the air outlet of the second air outlet (314) is directed toward the lower part of the optical module (11).
2. The purging device for lidar according to claim 1, characterized in that, The purging device further includes a first solenoid valve (4) and a second solenoid valve (5). The outlet of the first solenoid valve (4) is connected to two first pipes (411) through a first tee connector (41). Each first pipe (411) is connected to the air box (3) and is connected to the first air chamber. The connection positions of the two first pipes (411) and the air box (3) are spaced apart. The outlet of the second solenoid valve (5) is connected to two second pipes (511) through a second tee connector (51). Each second pipe (511) is connected to the air box (3) and is connected to the second air chamber. The connection positions of the two second pipes (511) and the air box (3) are spaced apart.
3. The purging device for lidar according to claim 2, characterized in that, The purging device also includes an air inlet pipe (6), which is connected to the air inlets of the first solenoid valve (4) and the second solenoid valve (5).
4. The purging device for lidar according to claim 1, characterized in that, The central axis of the first vent (312) and the central axis of the second vent (314) are both set at a 45° angle to the central axis of the optical module (11).
5. A purging device for lidar according to claim 1, characterized in that, The air box (3) includes a base plate (31) and a cover plate (32). The base plate (31) is provided with a first air-containing groove (311) and a second air-containing groove (313) located outside the first air-containing groove (311). The first air outlet (312) and the second air outlet (314) are both provided on the base plate (31). The cover plate (32) is provided on the base plate (31) so that the first air-containing groove (311) and the second air-containing groove (313) form the first air cavity and the second air cavity respectively under the action of the cover plate (32).
6. A purging device for lidar according to claim 5, characterized in that, A sealing ring (33) is provided between the base plate (31) and the cover plate (32), and the sealing ring (33) extends continuously along the circumference of the first air groove (311) and the second air groove (313).
7. A purging device for lidar according to claim 1, characterized in that, The optical module (11) has a detection area and a non-detection area along its circumference. The air box (3) has an installation notch (34) in its circumference. The installation notch (34) is set corresponding to the non-detection area. The inner side of the air box (3) is provided with a plurality of connecting ribs (35) at intervals. The connecting ribs (35) are fixedly connected to the control and processing module (12) by fasteners.
8. A purging device for lidar according to any one of claims 1-7, characterized in that, The mounting base (2) includes a mounting box (21), the interior of which has a mounting cavity with the opening facing downwards, and the control and processing module (12) is located in the mounting cavity.
9. A purging device for lidar according to claim 8, characterized in that, The mounting base (2) also includes a first baffle (22) located below the optical module (11) and a second baffle located above the optical module (11), both the first baffle (22) and the second baffle (23) protruding from the outer periphery of the optical module (11).
10. A purging device for a lidar according to claim 9, characterized in that, The first baffle (22) has a first edge (221) on its outer periphery, and the first edge (221) extends along the circumferential direction of the first baffle (22); And / or, the outer periphery of the second baffle (23) is provided with a second edge (231), which extends circumferentially along the second baffle (23).