Laser radar pitch angle adjusting structure

Abstract

The utility model discloses a laser radar pitch angle adjusting structure which comprises a rotating disc, the bottom of the rotating disc is rotatably connected with a base through a bearing, a circuit board is arranged in the base, fixing blocks are connected in the base and located at the two ends of the circuit board, adjusting grooves are formed in the fixing blocks, and a transmitting lens cone and a receiving lens cone are arranged on the surface of the circuit board. The two ends of the circuit board are inserted into the adjusting grooves respectively, the transmitting lens cone and the receiving lens cone are integrally installed on the surface of the circuit board, the transmitting lens cone, the receiving lens cone and the circuit board are integrated, the two ends of the circuit board are inserted into the two sets of fixing blocks of the base respectively, and the two ends of the circuit board are pushed forwards or backwards to move in the adjusting grooves of the fixing blocks to adjust angles. The pitch angles of the transmitting lens cone and the receiving lens cone are adjusted by adjusting the pitch angles of the transmitting lens cone and the receiving lens cone, and the lenses for transmitting and receiving are clamped and fixed at the mounting grooves in the transmitting lens cone and the receiving lens cone, so that the transmitting and receiving focal lengths of the transmitting lens cone and the receiving lens cone are fixed, the step of adjusting the receiving can be omitted, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lidar technology, specifically relating to a lidar pitch angle adjustment structure. Background Technology

[0002] LiDAR is a high-precision sensor mainly used to measure information such as the distance, orientation, height, speed and shape of an object. In LiDAR, the transmitting and receiving optical paths in the transmitting and receiving tubes are responsible for sending pulse signals to the target and receiving the returned pulse signals. After processing the returned signals, information such as the target distance and angle can be obtained.

[0003] Currently, the production of lidar requires adjusting the installation angles of the internal transmitting and receiving optical paths. This is done by moving the transmitting optical path module horizontally forward and backward (to adjust the focal length) and vertically up and down (to adjust the pitch angle), fixing it with adhesive once it is in the appropriate position. Then, the receiving optical path module is moved horizontally forward, backward, left, and right (to adjust to the position with suitable reception effect) to the appropriate position and fixed with adhesive. However, this adjustment process requires first adjusting the transmitting optical path module and then adjusting the receiving optical path module accordingly. This can easily lead to extreme situations during the adjustment process, such as the transmitting optical path module being adjusted too high or too low, causing the receiving optical path module to be unable to be adjusted properly, resulting in inconsistent angles between the two. Furthermore, this method of adjusting the transmitting optical path module first and then the receiving optical path module during production is time-consuming and significantly reduces production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a lidar pitch angle adjustment structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lidar pitch angle adjustment structure, comprising:

[0006] A rotating disk has a base rotatably connected to its bottom via bearings. A circuit board is installed inside the base, and fixing blocks are connected to both ends of the circuit board within the base. Each fixing block has an adjustment groove. The surface of the circuit board has a transmitting lens and a receiving lens, so that the transmitting lens, the receiving lens, and the circuit board are integrated into one unit. The two ends of the circuit board are respectively inserted into the adjustment grooves, so that the circuit board can move forward or backward within the adjustment grooves to adjust the pitch angle of the transmitting lens and the receiving lens.

[0007] Preferably, both the transmitting and receiving lenses have mounting grooves at one end, and lenses are installed in the mounting grooves.

[0008] Preferably, one end of the transmitting lens tube and the receiving lens tube is fixed with a lens cover for fixing the lens by screws.

[0009] Preferably, the top of the rotating disk is fixed with a top cover by fastening bolts.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) By integrating the transmitting tube and the receiving tube onto the surface of the circuit board, the three are integrated into one unit. The two ends of the circuit board are respectively inserted into the two sets of fixing blocks of the base. The pitch angle of the transmitting tube and the receiving tube can be adjusted by pushing the two ends of the circuit board forward or backward in the adjustment slot of the fixing block.

[0012] (2) Based on the actual test results under different focal lengths, the lenses used for transmitting and receiving are fixed in the mounting slots inside the transmitting and receiving tubes, thereby fixing the focal lengths of transmitting and receiving in the transmitting and receiving tubes. The fixed transmitting and receiving focal lengths can ensure that the receiving optical path can receive effectively, and at the same time, the step of adjusting the receiving can be eliminated, thus improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the base of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the transmitting lens tube and the receiving lens tube of this utility model;

[0016] Figure 4 This is a cross-sectional view of the receiving lens barrel and lens cover of this utility model after installation.

[0017] In the diagram: 1. Top cover; 2. Rotating disk; 3. Base; 4. Circuit board; 5. Fixing block; 6. Adjustment slot; 7. Transmitting lens tube; 8. Receiving lens tube; 9. Fastening bolt; 10. Lens; 11. Mounting slot; 12. Lens cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides, for example Figure 1-4The lidar elevation angle adjustment structure shown includes:

[0020] A rotating disk 2 has a base 3 rotatably connected to its bottom via bearings. A circuit board 4 is installed inside the base 3. Fixing blocks 5 are connected to both ends of the circuit board 4 inside the base 3, and the fixing blocks 5 have adjustment slots 6. The surface of the circuit board 4 is provided with a transmitting lens tube 7 and a receiving lens tube 8, so that the transmitting lens tube 7 and the receiving lens tube 8 are integrated with the circuit board 4. The two ends of the circuit board 4 are respectively inserted into the adjustment slots 6, so that the circuit board 4 can move forward or backward within the adjustment slots 6 to adjust the pitch angle of the transmitting lens tube 7 and the receiving lens tube 8.

[0021] Both the transmitting lens tube 7 and the receiving lens tube 8 have a mounting groove 11 at one end, and a lens 10 is provided in the mounting groove 11.

[0022] One end of the transmitting tube 7 and the receiving tube 8 is fixed with a lens cover 12 for fixing the lens 10 by screws. The lens cover 12 can ensure that the lens 10 is in the accurate position and can also prevent dust, water vapor and other impurities from entering the tube and adhering to the surface of the lens 10.

[0023] The top of the rotating disk 2 is fixed to the top of the cover 1 by fastening bolts 9, which facilitates disassembly and maintenance later.

[0024] The pitch angle adjustment structure of this lidar integrates the transmitting tube 7 and the receiving tube 8 onto the surface of the circuit board 4, making the three parts into one. The two ends of the circuit board 4 are respectively inserted into the two sets of fixing blocks 5 of the base 3. By pushing the two ends of the circuit board 4 forward or backward, the pitch angle of the transmitting tube 7 and the receiving tube 8 can be adjusted within the adjustment grooves 6 of the fixing blocks 5.

[0025] Based on actual test results at different focal lengths, the lenses 10 used for transmitting and receiving are fixed in the mounting slots 11 inside the transmitting lens tube 7 and the receiving lens tube 8, thereby fixing the transmitting and receiving focal lengths of the transmitting lens tube 7 and the receiving lens tube 8. The fixed transmitting and receiving focal lengths can ensure that the receiving optical path can be effectively received, and at the same time, the step of adjusting the receiving can be eliminated, thus improving production efficiency.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lidar pitch angle adjustment structure, characterized in that, include: A rotating disk (2) is rotatably connected to a base (3) at its bottom via a bearing. A circuit board (4) is provided inside the base (3). Fixing blocks (5) are connected to both ends of the circuit board (4) inside the base (3), and an adjustment groove (6) is provided inside the fixing blocks (5). A transmitting lens tube (7) and a receiving lens tube (8) are provided on the surface of the circuit board (4) so ​​that the transmitting lens tube (7) and the receiving lens tube (8) and the circuit board (4) are integrated into one unit. The two ends of the circuit board (4) are respectively inserted into the adjustment groove (6) so that the circuit board (4) can move forward or backward in the adjustment groove (6) to adjust the pitch angle of the transmitting lens tube (7) and the receiving lens tube (8).

2. The lidar elevation angle adjustment structure according to claim 1, characterized in that: Both the transmitting tube (7) and the receiving tube (8) have a mounting groove (11) at one end, and a lens (10) is provided in the mounting groove (11).

3. The lidar elevation angle adjustment structure according to claim 1, characterized in that: One end of the transmitting lens tube (7) and the receiving lens tube (8) is fixed with a lens cover (12) for fixing the lens (10) by screws.

4. The lidar pitch angle adjustment structure according to claim 1, characterized in that: The top of the rotating disk (2) is fixed with a top cover (1) by fastening bolts (9).

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