A dust cover for a laser radar

Abstract

This utility model relates to a dust cover for a lidar system, belonging to the technical field of dust cover technology. It includes a dust cover body, which is mounted above the lidar mounting base via a lifting mechanism, its spatial position opposite to the lidar being protected mounted on the base. The dust cover body is a shell structure with an open bottom, its internal space serving as a cavity to accommodate the lidar. The lifting mechanism includes a fixed end and an actuating end. The fixed end is mounted on the lidar mounting base, and the actuating end can reciprocate in a direction perpendicular to the lidar mounting base. The actuating end is fixedly connected to the dust cover body, serving as a height adjustment component for the dust cover body. This utility model solves the problems of traditional dust covers relying on manual operation and having low reliability over long-term use.

Description

Technical Field

[0001] This utility model belongs to the field of dust cover technology, specifically relating to a laser radar dust cover. Background Technology

[0002] LiDAR is an active detection system that integrates laser, GPS, and inertial navigation technologies. It is mainly used to acquire three-dimensional spatial information of targets. Its core working principle is to emit laser pulses and receive reflected signals, calculate the target distance using the speed of light and time difference, and combine other technologies to obtain parameters such as the target's azimuth, altitude, and speed. One application of LiDAR is in autonomous driving. LiDAR provides vehicles with real-time navigation and obstacle avoidance capabilities by accurately perceiving the surrounding environment. However, after the vehicle is parked, the LiDAR lens is easily contaminated with pollutants, which can affect the perception effect of subsequent LiDAR. Therefore, a dust cover for LiDAR is required.

[0003] Traditional dustproof devices mostly use static shielding structures, requiring manual operation to start and unable to be adjusted in real time according to needs. Currently available dust covers use air pumps to remove dust, but dust still accumulates over time, requiring manual intervention. This makes it difficult to meet the continuous protection needs in complex environments, resulting in low reliability over long-term use. Summary of the Invention

[0004] The technical problem to be solved:

[0005] To avoid the shortcomings of existing technologies, this utility model provides a laser radar dust cover, which uses a mechanical transmission mechanism to adjust the position of the dust cover, thus solving the problems of traditional dust covers relying on manual operation and having low reliability over long-term use.

[0006] The technical solution of this utility model is: a laser radar dust cover, including a dust cover body, which is installed above the laser radar mounting base surface through a lifting mechanism, and its spatial position is opposite to the laser radar to be protected installed on the laser radar mounting base surface.

[0007] The dust cover body is a shell structure with an open bottom, and its internal space serves as a cavity for accommodating the lidar.

[0008] The lifting mechanism includes a fixed end and an actuating end. The fixed end is installed on the lidar mounting base, and the actuating end can reciprocate in a direction perpendicular to the lidar mounting base. The actuating end is fixedly connected to the dust cover body and serves as a height position adjustment component for the dust cover body.

[0009] A further technical solution of this utility model is: the lifting mechanism includes a telescopic rod; the base of the telescopic rod is vertically installed on the lidar mounting base as a fixed end, and a moving block is installed on its top telescopic end as an actuator; the dust cover body is fixedly connected to the moving block through a connecting block, so that the dust cover body and the top telescopic end of the telescopic rod move together.

[0010] A further technical solution of this utility model is: the lifting mechanism is a screw and nut structure, the bottom end of the screw is coaxially connected to the output shaft of the drive motor, and the drive motor is mounted on the laser radar mounting base; the moving block has a threaded hole and is installed on the screw as a nut; the dust cover body is fixedly connected to the moving block through a connecting block, and by driving the screw to rotate, the moving block drives the dust cover body to make linear reciprocating motion along the central axis of the screw.

[0011] A further technical solution of this utility model is as follows: two columns are symmetrically installed on opposite sides of the protected laser radar; the bottom of the column is fixed to the laser radar mounting base by mounting plates, and its internal cavity serves as a reserved cavity for installing the lifting mechanism; an axial guide groove is opened on the side wall of the column facing the protected laser radar, and a guide block is slidably installed in the guide groove; the inner wall of the guide block is connected to the moving block, and the outer wall is connected to the connecting block, serving as a force transmission component to transmit the pushing and pulling force applied to the moving block by the lifting mechanism to the connecting block and the dust cover body.

[0012] A further technical solution of this utility model is: a guide rod is installed in the reserved cavity of the column, the axis of the guide rod is parallel to the lifting direction of the lifting mechanism, and passes through the through groove opened on the moving block, so as to perform circumferential rotation limit and axial movement guidance when the moving block makes linear reciprocating motion.

[0013] A further technical solution of this utility model is: the through groove of the moving block is a through hole with a diameter larger than that of the guide rod, and the through groove and the guide rod are in clearance fit; the inner wall of the through groove is provided with a number of spherical grooves, and ball bearings are installed in the grooves to realize the sliding guidance between the moving block and the guide rod.

[0014] A further technical solution of this utility model is: the spherical radius of the groove is larger than the radius of the ball, and the two are in clearance fit, allowing them to rotate relative to each other.

[0015] A further technical solution of this utility model is: a sponge pad is fixed to the inner top surface of the dust cover body by an adhesive layer.

[0016] A further technical solution of this utility model is that the outer wall surface of the dust cover body is coated with a wear-resistant layer.

[0017] A further technical solution of this utility model is: a number of reinforcing rods and reinforcing blocks are evenly distributed in the interlayer of the wall of the dust cover body, wherein the reinforcing rods and reinforcing blocks are arranged alternately.

[0018] Beneficial effects

[0019] The beneficial effects of this utility model are as follows: Through innovative mechanical guidance, buffer protection and symmetrical reinforcement structural design, this utility model solves the pain points of traditional dust covers such as rapid wear, weak protection and poor stability. While improving the level of automation, it significantly enhances the durability and environmental adaptability of the device, and is suitable for fields with stringent requirements for lidar protection, such as autonomous vehicles and industrial robots.

[0020] 1. This utility model significantly reduces wear caused by traditional rigid sliding friction by using a through groove in the moving block to cooperate with a guide rod, and setting an embedded groove and a rolling guide structure for the balls within the through groove. The clearance fit design of the balls (the groove diameter is larger than the ball diameter) allows them to rotate freely, reducing motion resistance and avoiding jamming, thereby extending the service life of the lifting mechanism, and is especially suitable for vehicle-mounted scenarios with frequent opening and closing.

[0021] 2. The sponge pad at the top of the dust cover body of this utility model is fixed by an adhesive layer to form a flexible contact surface. When the dust cover is closed, the sponge pad can absorb the impact force of vehicle vibration or accidental collision on the lidar lens, preventing the lens from being damaged by hard contact and improving the active safety of protection.

[0022] 3. This utility model adopts a symmetrically distributed column and connecting block design, combined with the staggered support of evenly distributed reinforcing rods and blocks inside the dust cover, effectively dispersing external loads and preventing deformation of the cover due to uneven stress. The wear-resistant coating on the outer wall further enhances the wear resistance of the dust cover in complex environments (such as wind, sand, and rain).

[0023] 4. This utility model achieves precise opening and closing control of the dust cover by using a telescopic rod to drive the moving block to rise and fall, and cooperating with the guide block to slide along the guide groove (the control component is an existing drive motor). This mechanical transmission structure simplifies the complexity of traditional manual operation, and the synergistic effect of the telescopic rod and the ball guide ensures the stability and repeatability of the action, reduces the failure rate, and meets the long-term reliable operation requirements in unattended scenarios. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front cross-sectional structure of a laser radar dust cover according to an embodiment of the present invention;

[0025] Figure 2 This is a partial front view cross-sectional structural diagram of the column of a laser radar dust cover according to an embodiment of the present utility model;

[0026] Figure 3 This is a partial front view cross-sectional structural diagram of the dust cover body of a laser radar dust cover according to an embodiment of the present utility model;

[0027] Figure 4 This is a cross-sectional schematic diagram of the dust cover body of a laser radar dust cover according to the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. LiDAR mounting base; 2. Mounting plate; 3. Column; 4. Reserved cavity; 5. Dust cover body; 6. Receiving cavity; 7. Guide groove; 8. Moving block; 9. Telescopic rod; 10. Guide rod; 11. Guide block; 12. Connecting block; 13. Groove; 14. Ball bearing; 15. Through groove; 16. Adhesive layer; 17. Sponge pad; 18. Wear-resistant layer; 19. Reinforcing rod; 20. Reinforcing block. Detailed Implementation

[0029] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0031] Addressing the issues of traditional dust covers relying on manual operation and low reliability during long-term use, this utility model provides a lidar dust cover, comprising a dust cover body. The dust cover body is mounted above the lidar mounting base via a lifting mechanism, with its spatial position opposite to the lidar being protected, which is mounted on the lidar mounting base. The dust cover body is a shell structure with an open bottom, and its internal space serves as a cavity for accommodating the lidar. The lifting mechanism includes a fixed end and an actuating end. The fixed end is mounted on the lidar mounting base, and the actuating end can reciprocate in a direction perpendicular to the lidar mounting base. The actuating end is fixedly connected to the dust cover body, serving as a height adjustment component for the dust cover body.

[0032] The above technical solution will be further explained below with reference to the accompanying drawings and examples:

[0033] In one embodiment, refer to Figure 1As shown, in this embodiment, a lidar dust cover includes a dust cover body 5. The dust cover body 5 is installed above the lidar mounting base 1 by pillars 3 symmetrically arranged on both sides, opposite to the lidar being protected.

[0034] Specifically, a mounting plate 2 is bolted to the top of the lidar mounting base 1. A column 3 is fixed to the top of the mounting plate 2. A pre-drilled cavity 4 is provided inside the column 3, and a telescopic rod 9 is installed at the bottom of the pre-drilled cavity 4. (Refer to...) Figure 2 As shown, a guide rod 10 is fixed inside the reserved cavity 4 at the side of the telescopic rod 9. A guide groove 7 communicating with the reserved cavity 4 is opened on the side of the column 3. A guide block 11 is inserted into the guide groove 7. A moving block 8 is fixed on one side of the guide block 11, and a connecting block 12 is fixed on the other side of the guide block 11. A through groove 15 is opened on the side of the moving block 8, and the guide rod 10 passes through the inside of the through groove 15.

[0035] Specifically, refer to Figure 2 As shown, the through groove 15 has grooves 13 on both sides, and balls 14 are embedded inside the grooves 13. The grooves 13 are evenly distributed on both sides of the through groove 15, and the inner diameter of the grooves 13 is larger than the outer diameter of the balls 14.

[0036] Specifically, refer to Figure 1 As shown, the side of the connecting block 12 is connected to the dust cover body 5, and the connecting blocks 12 are symmetrically distributed about the central axis of the dust cover body 5.

[0037] Specifically, refer to Figure 1 As shown, the columns 3 are symmetrically distributed about the central axis of the dust cover body 5, and the adhesive layer 16 and the sponge pad 17 are bonded together.

[0038] Specifically, refer to Figure 3 As shown, the dust cover body 5 has a receiving cavity 6 for accommodating the lidar. An adhesive layer 16 is fixed to the top of the inner wall of the receiving cavity 6, and a sponge pad 17 is fixed to the outer wall of the adhesive layer 16. When the dust cover body 5 covers the lidar, if the top of the lidar contacts the top of the inner wall of the receiving cavity 6, the sponge pad 17 can provide top protection.

[0039] Specifically, refer to Figure 4 As shown, the outer wall of the dust cover body 5 is coated with a wear-resistant layer 18, and a reinforcing rod 19 is fixed inside the dust cover body 5. Reinforcing blocks 20 are connected to both sides of the reinforcing rod 19. The reinforcing rods 19 are evenly distributed inside the dust cover body 5, and the reinforcing blocks 20 are connected between adjacent reinforcing rods 19 and are symmetrically distributed.

[0040] Preferably, the reinforcing block 20 is connected between adjacent reinforcing rods 19 to improve the vertical support strength of the reinforcing rods 19.

[0041] Preferably, the telescopic rod 9 is an electric telescopic rod, which is an existing product.

[0042] Working principle: First, during operation, the receiving cavity 6 is formed inside the dust cover body 5. This receiving cavity 6 serves as the receiving area for the subsequent lidar. The mounting plate 2 is fixed to the top of the lidar mounting base 1 using bolts. The lidar is assembled between the mounting plates 2 and on the top surface of the lidar mounting base 1. When the vehicle is off, the telescopic rod 9 is activated, causing the moving block 8 to move downwards. During this movement, the guide rod 10 cooperates with the through groove 15 to form a sliding guide. A guide block 11 is fixed to the side of the moving block 8, passing through the guide groove 7 for guidance. The connecting block 12 connects to the dust cover body 5, covering the lidar with the dust cover body 5. When the lidar is needed, the telescopic rod 9 is activated, pushing the moving block 8 upwards, allowing the dust cover body 5 to detach from the lidar.

[0043] The lidar dust cover in this embodiment not only improves the obstruction adjustment capability, but also enhances the dust cover's mobility protection capability and overall protection capability; its advantages are analyzed as follows:

[0044] (1) By using bolts to fix the mounting plate to the top position of the lidar mounting base, the lidar is assembled between the mounting plates and on the top surface of the lidar mounting base. When the vehicle is turned off, the telescopic rod can be activated to drive the moving block to move downward. When moving, the guide rod cooperates with the through groove to form a sliding guide, and the side of the moving block is fixed with a guide block. The guide block passes through the inside of the guide groove and is connected to the dust cover by the connecting block. Therefore, during the movement of the moving block, the dust cover can be covered on the outside of the lidar to prevent the lens from being contaminated during parking. When the lidar needs to be used, the telescopic rod can be activated to push the moving block upward and let the dust cover leave the outside of the lidar. Therefore, the overall obstruction adjustment capability is improved in the working process.

[0045] (2) By opening the through groove inside the side of the moving block, the guide rod passes through the inside of the through groove, and the slot is opened on both sides of the through groove and connected to each other. Therefore, when the moving block moves up and down along the guide rod, the slot and the ball can cooperate to slide and guide, which reduces the wear problem caused by hard contact during movement and improves the movement protection capability.

[0046] (3) By opening the receiving cavity inside the dust cover, the receiving cavity is the receiving area of ​​the subsequent lidar. The sponge pad is glued and fixed in the top position inside the receiving cavity using an adhesive layer. Therefore, when the dust cover covers the lidar, the sponge pad can first form top protection. At the same time, the wear-resistant layer is coated on the outer wall of the dust cover for wear-resistant protection, and the reinforcing rods are evenly distributed inside the dust cover to improve a certain degree of deformation resistance.

[0047] In one embodiment, a lidar dust cover includes a dust cover body 5, which is mounted on the lidar mounting base 1 above by pillars 3 symmetrically arranged on both sides, opposite to the lidar being protected.

[0048] Specifically, a mounting plate 2 is bolted to the top of the lidar mounting base 1. A column 3 is fixed to the top of the mounting plate 2. A reserved cavity 4 is formed inside the column 3. A drive motor is installed at the bottom of the reserved cavity 4. A lead screw is coaxially mounted on the output shaft of the drive motor. (Refer to...) Figure 2 As shown, a guide rod 10 is fixed inside the reserved cavity 4 at the side of the lead screw. A guide groove 7 communicating with the reserved cavity 4 is opened on the side of the column 3. A guide block 11 is inserted in the guide groove 7. A moving block 8 is fixed on one side of the guide block 11, and a connecting block 12 is fixed on the other side of the guide block 11. The moving block 8 has a through groove 15 and a threaded hole, and is coaxially installed on the lead screw through the threaded hole. The guide rod 10 passes through the through groove 15. The lead screw is driven to rotate by a drive motor. The rotational motion of the lead screw is converted into linear reciprocating motion through the moving block 8. When the moving block 8 performs linear reciprocating motion, the guide rod performs circumferential rotation limit and axial movement guidance.

[0049] Specifically, refer to Figure 2 As shown, the through groove 15 has grooves 13 on both sides, and balls 14 are embedded inside the grooves 13. The grooves 13 are evenly distributed on both sides of the through groove 15, and the inner diameter of the grooves 13 is larger than the outer diameter of the balls 14.

[0050] Specifically, refer to Figure 1 As shown, the side of the connecting block 12 is connected to the dust cover body 5, and the connecting blocks 12 are symmetrically distributed about the central axis of the dust cover body 5.

[0051] Specifically, refer to Figure 1 As shown, the columns 3 are symmetrically distributed about the central axis of the dust cover body 5, and the adhesive layer 16 and the sponge pad 17 are bonded together.

[0052] Specifically, refer to Figure 3 As shown, the dust cover body 5 has a receiving cavity 6 for accommodating the lidar. An adhesive layer 16 is fixed to the top of the inner wall of the receiving cavity 6, and a sponge pad 17 is fixed to the outer wall of the adhesive layer 16. When the dust cover body 5 covers the lidar, if the top of the lidar contacts the top of the inner wall of the receiving cavity 6, the sponge pad 17 can provide top protection.

[0053] Specifically, refer to Figure 4As shown, the outer wall of the dust cover body 5 is coated with a wear-resistant layer 18, and a reinforcing rod 19 is fixed inside the dust cover body 5. Reinforcing blocks 20 are connected to both sides of the reinforcing rod 19. The reinforcing rods 19 are evenly distributed inside the dust cover body 5, and the reinforcing blocks 20 are connected between adjacent reinforcing rods 19 and are symmetrically distributed.

[0054] Preferably, the reinforcing block 20 is connected between adjacent reinforcing rods 19 to improve the vertical support strength of the reinforcing rods 19.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A dust cover for a lidar system, comprising a dust cover body, characterized in that: The dust cover body is installed above the lidar mounting base via a lifting mechanism, and its spatial position is opposite to the lidar being protected installed on the lidar mounting base. The dust cover body is a shell structure with an open bottom, and its internal space serves as a cavity for accommodating the lidar. The lifting mechanism includes a fixed end and an actuating end. The fixed end is installed on the lidar mounting base, and the actuating end can reciprocate in a direction perpendicular to the lidar mounting base. The actuating end is fixedly connected to the dust cover body and serves as a height position adjustment component for the dust cover body.

2. The lidar dust cover according to claim 1, characterized in that: The lifting mechanism includes a telescopic rod; the base of the telescopic rod is vertically installed on the lidar mounting base as a fixed end, and a moving block is installed on its top telescopic end as an actuator; the dust cover body is fixedly connected to the moving block through a connecting block, so that the dust cover body and the top telescopic end of the telescopic rod move together.

3. The lidar dust cover according to claim 2, characterized in that: The lifting mechanism is a lead screw and nut structure. The bottom end of the lead screw is coaxially connected to the output shaft of the drive motor, and the drive motor is mounted on the lidar mounting base. The moving block has a threaded hole and is installed on the lead screw as a nut. The dust cover body is fixedly connected to the moving block through a connecting block. By rotating the lead screw, the moving block drives the dust cover body to make linear reciprocating motion along the central axis of the lead screw.

4. A lidar dust cover according to claim 2 or 3, characterized in that: Two columns are symmetrically installed on opposite sides of the protected lidar; the bottom of the columns is fixed to the lidar mounting base by mounting plates, and the internal cavity serves as a reserved cavity for installing the lifting mechanism; an axial guide groove is opened on the side wall of the column facing the protected lidar, and a guide block is slidably installed in the guide groove; the inner wall of the guide block is connected to the moving block, and the outer wall is connected to the connecting block, serving as a force transmission component to transmit the pushing and pulling force applied to the moving block by the lifting mechanism to the connecting block and the dust cover body.

5. The lidar dust cover according to claim 4, characterized in that: A guide rod is installed in the reserved cavity of the column. The axis of the guide rod is parallel to the lifting direction of the lifting mechanism and passes through the through slot opened on the moving block. When the moving block makes linear reciprocating motion, it performs circumferential rotation limit and axial movement guidance.

6. The lidar dust cover according to claim 5, characterized in that: The through-hole of the movable block is a through hole with a diameter larger than that of the guide rod, and the through-hole and the guide rod are in clearance fit; the inner wall of the through-hole has several spherical grooves, and ball bearings are installed in the grooves to realize the sliding guidance between the movable block and the guide rod.

7. A lidar dust cover according to claim 6, characterized in that: The spherical radius of the groove is larger than the radius of the ball, and the two are in a clearance fit, allowing them to rotate relative to each other.

8. The lidar dust cover according to claim 1, characterized in that: The inner top surface of the dust cover body is fixed with a sponge pad by an adhesive layer.

9. A lidar dust cover according to claim 1, characterized in that: The outer wall surface of the dust cover body is coated with a wear-resistant layer.

10. A lidar dust cover according to claim 1, characterized in that: The dust cover body wall interlayer has a number of reinforcing rods and reinforcing blocks evenly distributed, wherein the reinforcing rods and reinforcing blocks are arranged alternately.

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