Laser radar target position adjusting mechanism
By designing a multi-directional adjustment mechanism, the precise position and angle adjustment of the lidar target is achieved, which solves the problems of insufficient complexity and accuracy of multi-angle adjustment in traditional methods, and meets the needs of high-precision lidar target installation.
Patent Information
- Application Number
- CN202420616619.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The position adjustment of the lidar target requires consideration of accurate adjustment of multiple directions and angles. Traditional methods are difficult to meet the requirements of position accuracy of ±0.5mm and angle accuracy of ±0.1°, and the adjustment process is complicated.
A lidar target position adjustment mechanism including X-direction, Y-direction, Z-direction adjustment mechanism and angle adjustment mechanism is designed. Through threaded connection and rotation mechanism, the fine position and angle adjustment of the target in three directions is realized to ensure that Adjust the independence and accuracy of the process.
The precise position adjustment and angle adjustment of the lidar target in the X, Y, and Z directions is realized, which meets the position accuracy of ±0.5mm and the angle accuracy of ±0.1°. The adjustments in each direction do not affect each other, which improves the installation of the target. efficiency and accuracy.
Smart Images
Figure CN222316381U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and more specifically to a laser radar target position adjustment mechanism. Background Art
[0002] Currently, some vehicles are equipped with LiDAR sensors. The calibration of LiDAR sensors on vehicles requires the use of LiDAR targets (diffuse reflection plates). LiDAR sensors have high requirements for the position accuracy of LiDAR targets, and also have certain requirements in terms of spatial angles compared to traditional targets.
[0003] After the installation of the laser radar target, three-dimensional coordinate mapping is required. The target position adjustment is involved in the mapping process. The position accuracy is required to be ±0.5mm and the angle accuracy is required to be ±0.1°. The traditional target has a single position and a simple posture. It only needs to be adjusted in one direction. The position adjustment in one direction does not need to consider the position adjustment in other directions. The laser radar target has a variety of positions and postures. The position adjustment process involves the X, Y, Z directions, as well as the pitch angle, yaw angle, roll angle and other directions. Position change adjustment. Utility Model Content
[0004] The utility model aims to provide a laser radar target position adjustment mechanism to solve the problem of multi-angle adjustment of the laser radar target.
[0005] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:
[0006] A laser radar target position adjustment mechanism, comprising:
[0007] The X-axis adjustment mechanism 100 includes a base plate 110, a bracket 120, an X-axis adjustment screw 130, and an X-axis adjustment nut 140. The base plate 110 is provided with an X-axis limit plate 111. The bracket 120 is slidably connected to the base plate 110 in a first direction X. The X-axis adjustment screw 130 is connected to the bracket 120 at one end along the first direction X, and the other end passes through the X-axis limit plate 111 to connect to the X-axis adjustment nut 140;
[0008] The Y-axis adjustment mechanism 200 comprises a mounting plate 210, a Y-axis limiting plate 220, a Y-axis adjustment screw 230 and a Y-axis adjustment nut 240. The mounting plate 210 is slidably connected to the bracket 120 in the second direction Y. The Y-axis limiting plate 220 is located at one side of the mounting plate 210 in the second direction Y and is fixedly connected to the bracket 120. The Y-axis adjustment screw 230 is connected to the mounting plate 210 at one end along the second direction Y, and the other end passes through the Y-axis limiting plate 220 and is connected to the Y-axis adjustment nut 240;
[0009] The Z-direction adjustment mechanism 300 includes a connecting plate 310, a Z-direction limiting plate 320, a Z-direction adjusting screw 330 and a Z-direction adjusting nut 340. The connecting plate 310 is slidably connected to the mounting plate 210 in the third direction Z. The Z-direction limiting plate 320 is located at one side of the connecting plate 310 in the third direction Z and is fixedly connected to the mounting plate 210. The Z-direction adjusting screw 330 is connected to the connecting plate 310 at one end along the third direction Z, and the other end passes through the Z-direction limiting plate 320 and is connected to the Z-direction adjusting nut 340.
[0010] The angle adjustment mechanism 400 includes a connecting arm 410, a hanging plate 420, two connecting rods 430, and an angle adjustment screw 440. One end of the connecting arm 410 is fixedly connected to the connecting plate 310, and the other end is provided with a rotation axis 411 along the third direction Z. The hanging plate 420 is rotatably connected to the rotation axis 411. One ends of the two connecting rods 430 are connected through the angle adjustment screw 440, and the other ends are respectively hinged to the mounting plate 210 and the hanging plate 420. The angle adjustment screw 440 and the two ends of the connecting rods 430 are threadedly connected in opposite directions.
[0011] The target 500 is connected to the hanging plate 420 .
[0012] Furthermore, there are two X-axis adjustment screws 130, two X-axis limit plates 111 and two X-axis adjustment nuts 140. In the first direction X, the two X-axis adjustment screws 130 are connected to both sides of the bracket 120, the two X-axis limit plates 111 are distributed on both sides of the bracket 120, and the two X-axis adjustment nuts 140 are respectively arranged on the outside of the two X-axis limit plates 111 relative to the bracket 120.
[0013] Furthermore, an X-direction elongated hole 121 along the first direction X is provided at the bottom of the bracket 120 , and the bracket 120 is connected to the base plate 110 by passing an X-direction fixing screw 150 through the X-direction elongated hole 121 .
[0014] Furthermore, there are two Y-direction adjusting nuts 240 , which are arranged on both sides of the Y-direction limiting plate 220 in the second direction Y.
[0015] Furthermore, the mounting plate 210 is threadedly connected with a Y-direction fixing screw 250 arranged along the first direction X, and the Y-direction fixing screw 250 cooperates with a groove arranged along the second direction Y on the bracket 120 to fasten the mounting plate 210 to the bracket 120.
[0016] Furthermore, there are two Z-direction adjustment nuts 340 , which are arranged on both sides of the Z-direction limiting plate 320 in the third direction Z.
[0017] Furthermore, a Z-direction elongated hole along the third direction Z is formed on the connecting plate 310 , and the connecting plate 310 is connected to the mounting plate 210 by passing a Z-direction fixing screw 350 through the Z-direction elongated hole.
[0018] Furthermore, the hanging plate 420 is connected to the rotating shaft 411 via a support fixing clamp block 450 provided thereon, and the support fixing clamp block 450 is fastened via an angle fastening screw 460 .
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] The utility model provides a laser radar target position adjustment mechanism, which drives the X-direction adjustment screw, the Y-direction adjustment screw and the Z-direction adjustment screw to move respectively along the first direction X, the second direction Y and the third direction Z by rotating the X-direction adjustment nut, the Y-direction adjustment nut and the Z-direction adjustment nut, thereby realizing the position adjustment of the target in the first direction X, the second direction Y and the third direction Z; and drives the target to rotate around the rotation axis by rotating the angle adjustment screw.
[0021] The utility model provides a laser radar target position adjustment mechanism, wherein the X-axis adjustment mechanism, the Y-axis adjustment mechanism, the Z-axis adjustment mechanism and the angle adjustment mechanism are all adjusted through threads, so that fine adjustment of the position and the angle can be achieved, meeting the position accuracy requirement of ±0.5mm and the angle accuracy requirement of ±0.1°, and the adjustments in the three directions do not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The utility model is further described below in conjunction with the accompanying drawings:
[0023] Figure 1 It is a structural schematic diagram of a laser radar target position adjustment mechanism in one embodiment;
[0024] Figure 2 A top view of a laser radar target position adjustment mechanism in one embodiment;
[0025] Figure 3 for Figure 2 A partial enlarged schematic diagram in the middle;
[0026] Figure 4 A partial side view of a laser radar target position adjustment mechanism in one embodiment;
[0027] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;
[0028] 100. X-axis adjustment mechanism, 110. bottom plate, 111. X-axis limit plate, 120. bracket, 121. X-axis long hole, 122. base, 123. stand, 130. X-axis adjustment screw, 140. X-axis adjustment nut, 150. X-axis fixing screw;
[0029] 200. Y-direction adjustment mechanism, 210. mounting plate, 220. Y-direction limit plate, 230. Y-direction adjustment screw, 240. Y-direction adjustment nut, 250. Y-direction fixing screw;
[0030] 300. Z-direction adjustment mechanism, 310. connecting plate, 320. Z-direction limit plate, 330. Z-direction adjustment screw, 340. Z-direction adjustment nut, 350. Z-direction fixing screw;
[0031] 400. Angle adjustment mechanism, 410. Connecting arm, 411. Rotating shaft, 420. Hanging plate, 421. Ear plate, 430. Connecting rod, 431. Articulated shaft, 440. Angle adjustment screw, 441. Screwing part, 450. Support fixing clamp, 460. Angle fastening screw;
[0032] 500. Target;
[0033] X. first direction, Y. second direction, Z. third direction. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] See also Figure 1 refer to Figure 5 This embodiment provides a laser radar target position adjustment mechanism, including: an X-axis adjustment mechanism 100, a Y-axis adjustment mechanism 200, a Z-axis adjustment mechanism 300, an angle adjustment mechanism 400 and a target 500.
[0036] The X-direction adjustment mechanism 100 includes a base plate 110 , a bracket 120 , an X-direction adjustment screw 130 , an X-direction adjustment nut 140 and an X-direction fixing screw 150 .
[0037] Two X-direction limiting plates 111 are disposed on the bottom plate 110 , and the two X-direction limiting plates 111 are spaced apart along the first direction X.
[0038] The bracket 120 includes a base 122 and a stand 123. The stand 123 is constructed of profiles and is vertically arranged on the base 122 along the third direction Z. The base 122 is provided with an X-direction long hole 121 along the first direction X. The bracket 120 is connected to the bottom plate 110 by passing an X-direction fixing screw 150 through the X-direction long hole 121. By tightening the X-direction fixing screw 150, the bracket 120 can be fixed on the bottom plate 110. By loosening the X-direction fixing screw 150, the bracket 120 can slide on the bottom plate 110 along the first direction X.
[0039] The X-direction adjustment screw 130 is disposed along the first direction X, one end of which is connected to the bracket 120 , and the other end of which passes through the X-direction limiting plate 111 and is threadedly connected to the X-direction adjustment nut 140 .
[0040] In this embodiment, there are two X-axis adjustment screws 130, two X-axis limit plates 111 and two X-axis adjustment nuts 140. In the first direction X, the two X-axis adjustment screws 130 are connected to both sides of the bracket 120, the two X-axis limit plates 111 are distributed on both sides of the bracket 120, and the two X-axis adjustment nuts 140 are respectively arranged on the outside of the two X-axis limit plates 111 relative to the bracket 120.
[0041] The Y-axis adjustment mechanism 200 includes a mounting plate 210 , a Y-axis limiting plate 220 , a Y-axis adjustment screw 230 , a Y-axis adjustment nut 240 and a Y-axis fixing screw 250 .
[0042] The mounting plate 210 can be slidably connected to the bracket 120 along the second direction Y. The Y-axis limit plate 220 is located on one side of the mounting plate 210 in the second direction Y and is fixedly connected to the bracket 120. The Y-axis adjustment screw 230 is arranged along the second direction Y, one end of which is connected to the mounting plate 210, and the other end passes through the Y-axis limit plate 220 and is threadedly connected to the Y-axis adjustment nut 240. The Y-axis adjustment nut 240 has two, which are arranged on both sides of the Y-axis limit plate 220 in the second direction Y.
[0043] The Y-direction fixing screw 250 is threaded through the mounting plate 210 along the first direction X. The crossbeam profile of the stand 123 is provided with a groove along the second direction Y. The Y-direction fixing screw 250 cooperates with the groove along the second direction Y on the crossbeam profile of the stand 123 to fasten the mounting plate 210 to the stand 123, and the position of the mounting plate 210 can be adjusted along the second direction Y.
[0044] The Z-direction adjustment mechanism 300 includes a connecting plate 310 , a Z-direction limiting plate 320 , a Z-direction adjustment screw 330 , a Z-direction adjustment nut 340 and a Z-direction fixing screw 350 .
[0045] The connecting plate 310 is provided with a Z-direction elongated hole along the third direction Z. The connecting plate 310 is connected to the mounting plate 210 by means of the Z-direction fixing screw 350 passing through the Z-direction elongated hole. By tightening the Z-direction fixing screw 350, the connecting plate 310 can be fixed on the mounting plate 210. By loosening the Z-direction fixing screw 350, the connecting plate 310 can slide on the mounting plate 210 along the third direction Z.
[0046] The Z-axis limit plate 320 is located on one side of the connecting plate 310 in the third direction Z and is fixedly connected to the mounting plate 210. The Z-axis adjustment screw 330 is arranged along the third direction Z, with one end connected to the connecting plate 310 and the other end passing through the Z-axis limit plate 320 and being threadedly connected to the Z-axis adjustment nut 340. There are two Z-axis adjustment nuts 340, which are arranged on the outer sides of the two Z-axis limit plates 320 in the third direction Z.
[0047] The angle adjustment mechanism 400 includes a connecting arm 410 , a hanging plate 420 , two connecting rods 430 and an angle adjustment screw 440 .
[0048] One end of the connecting arm 410 is fixedly connected to the connecting plate 310 , and the other end is provided with a rotating shaft 411 arranged along the third direction Z.
[0049] The hanging plate 420 is provided with two pillar fixing clamps 450 , and the hanging plate 420 is rotatably connected to the rotating shaft 411 through the two pillar fixing clamps 450 and is fastened by an angle fastening screw 460 . When the angle fastening screw 460 is loosened, the hanging plate 420 can rotate around the rotating shaft 411 through the pillar fixing clamps 450 .
[0050] The ends of the two connecting rods 430 that are close to each other are connected by the angle adjustment screw 440, and the other end of one of the connecting rods 430 is hinged to the ear plate 421 set on the hanging plate 420 through the hinge shaft 431, and the other end of the other connecting rod 430 can be hinged to the mounting plate 210 through the hinge shaft 431, and can also be hinged to the connecting plate 310. When hinged to the connecting plate 310, the hinge shaft 431 hinged to the ear plate 421 can move up and down relative to the ear plate 421 along the third direction Z and be fastened by bolts.
[0051] Both ends of the angle adjustment screw 440 are threadedly connected to the two connecting rods 430 . A screwing portion 441 is disposed in the middle of the angle adjustment screw 440 . On both sides of the screwing portion 441 , the thread directions of the angle adjustment screw 440 are opposite.
[0052] The target 500 is connected to the hanging plate 420 .
[0053] This embodiment provides a working principle of a laser radar target position adjustment mechanism:
[0054] When adjusting the position in the first direction X, first loosen the X-direction fixing screw 150 and the X-direction adjusting nut 140 on the opposite side of the intended adjustment direction, and then rotate the X-direction adjusting nut 140 on the side of the intended adjustment direction to move the bracket 120 in the first direction X toward the intended adjustment direction. After the adjustment is completed, tighten the X-direction fixing screw 150 to fix the position of the bracket 120.
[0055] When adjusting the Y position in the second direction, first loosen the Y-direction fixing screw 250 and the Y-direction adjusting nut 240 on the opposite side of the intended adjustment direction, and then rotate the Y-direction adjusting nut 240 on the side of the intended adjustment direction to move the mounting plate 210 in the second direction Y toward the intended adjustment direction. After the adjustment is completed, tighten the Y-direction fixing screw 250 to fix the position of the mounting plate 210.
[0056] When adjusting the Z position in the third direction, first loosen the Z-direction fixing screw 350 and the Z-direction adjusting nut 340 on the opposite side of the intended adjustment direction, and then rotate the Z-direction adjusting nut 340 on the side of the intended adjustment direction to move the connecting plate 310 in the third direction Z toward the intended adjustment direction. After the adjustment is completed, tighten the Z-direction fixing screw 350 to fix the position of the connecting plate 310.
[0057] When adjusting the angle, first loosen the angle fastening screw 460, and then rotate the angle adjustment screw 440 through the screwing part 441 to make the two connecting rods 430 extend and retract relative to the angle adjustment screw 440, drive the hanging plate 420 to rotate around the rotating axis 411, and then drive the target 500 to rotate accordingly, so as to achieve the angle adjustment of the target 500. After the adjustment is completed, tighten the angle fastening screw 460 to fix the position of the hanging plate 420.
[0058] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A laser radar target position adjustment mechanism, characterized in that: include: An X-direction adjustment mechanism (100) comprises a base plate (110), a bracket (120), an X-direction adjustment screw (130), and an X-direction adjustment nut (140); the base plate (110) is provided with an X-direction limit plate (111); the bracket (120) is slidably connected to the base plate (110) in a first direction (X); one end of the X-direction adjustment screw (130) is connected to the bracket (120) along the first direction (X), and the other end passes through the X-direction limit plate (111) and is threadedly connected to the X-direction adjustment nut (140); A Y-axis adjustment mechanism (200) comprises a mounting plate (210), a Y-axis limiting plate (220), a Y-axis adjustment screw (230) and a Y-axis adjustment nut (240); the mounting plate (210) is slidably connected to the bracket (120) in a second direction (Y); the Y-axis limiting plate (220) is located on one side of the mounting plate (210) in the second direction (Y) and is fixedly connected to the bracket (120); one end of the Y-axis adjustment screw (230) is connected to the mounting plate (210) along the second direction (Y), and the other end passes through the Y-axis limiting plate (220) and is threadedly connected to the Y-axis adjustment nut (240); A Z-direction adjustment mechanism (300) comprises a connecting plate (310), a Z-direction limiting plate (320), a Z-direction adjustment screw (330) and a Z-direction adjustment nut (340); the connecting plate (310) is slidably connected to the mounting plate (210) in a third direction (Z); the Z-direction limiting plate (320) is located on one side of the connecting plate (310) in the third direction (Z) and is fixedly connected to the mounting plate (210); one end of the Z-direction adjustment screw (330) is connected to the connecting plate (310) along the third direction (Z), and the other end passes through the Z-direction limiting plate (320) and is threadedly connected to the Z-direction adjustment nut (340); An angle adjustment mechanism (400) comprises a connecting arm (410), a hanging plate (420), two connecting rods (430), and an angle adjustment screw (440); one end of the connecting arm (410) is fixedly connected to the connecting plate (310), and the other end is provided with a rotation axis (411) along the third direction (Z); the hanging plate (420) is rotatably connected to the rotation axis (411); one end of the two connecting rods (430) is connected via the angle adjustment screw (440), and the other end is respectively hinged to the mounting plate (210) and the hanging plate (420); the thread directions of the two ends of the angle adjustment screw (440) threadedly connected to the two connecting rods (430) are opposite; The target (500) is connected to the hanging plate (420).
2. A laser radar target position adjustment mechanism according to claim 1, characterized in that: There are two X-direction adjustment screws (130), two X-direction limit plates (111) and two X-direction adjustment nuts (140). In the first direction (X), the two X-direction adjustment screws (130) are connected to two sides of the bracket (120), the two X-direction limit plates (111) are distributed on two sides of the bracket (120), and the two X-direction adjustment nuts (140) are respectively arranged on the outer sides of the two X-direction limit plates (111) relative to the bracket (120).
3. A laser radar target position adjustment mechanism according to claim 1, characterized in that: The bottom of the bracket (120) is provided with an X-direction elongated hole (121) along the first direction (X), and the bracket (120) is connected to the bottom plate (110) by means of an X-direction fixing screw (150) passing through the X-direction elongated hole (121).
4. The laser radar target position adjustment mechanism according to claim 1, characterized in that: The Y-direction adjustment nuts (240) are provided in two numbers and are arranged on both sides of the Y-direction limiting plate (220) in the second direction (Y).
5. The laser radar target position adjustment mechanism according to claim 1, characterized in that: The mounting plate (210) is threadedly connected with a Y-direction fixing screw (250) arranged along the first direction (X); the Y-direction fixing screw (250) cooperates with a groove arranged along the second direction (Y) on the bracket (120), so that the mounting plate (210) can be fastened to the bracket (120).
6. The laser radar target position adjustment mechanism according to claim 1, characterized in that: The Z-direction adjustment nuts (340) are provided in two numbers and are arranged on both sides of the Z-direction limiting plate (320) in the third direction (Z).
7. The laser radar target position adjustment mechanism according to claim 1, characterized in that: The connecting plate (310) is provided with a Z-direction elongated hole along the third direction (Z), and the connecting plate (310) is connected to the mounting plate (210) by means of a Z-direction fixing screw (350) passing through the Z-direction elongated hole.
8. The laser radar target position adjustment mechanism according to claim 1, characterized in that: The hanging plate (420) is connected to the rotating shaft (411) via a support fixing clamp (450) arranged thereon, and the support fixing clamp (450) is fastened via an angle fastening screw (460).