CN218099696U

CN218099696U - Laser radar antenna

Info

Publication number: CN218099696U
Application number: CN202222746478.1U
Authority: CN
Inventors: 李春雷; 蔡天舒
Original assignee: Nanjing Huanmei Optical Technology Co ltd
Current assignee: Nanjing Huanmei Optical Technology Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2022-12-20
Anticipated expiration: 2032-10-18

Abstract

The application relates to a laser radar antenna, and relates to the field of laser radars. The optical fiber focusing lens comprises a barrel body, wherein two ends of the barrel body are opened, a base barrel is arranged at one end of the barrel body, a base is arranged in the base barrel in a sliding mode, a through hole for light to pass through is formed in the base, a control assembly for controlling the axial position of the base barrel in the base barrel is arranged on the base barrel, an optical fiber flange for fixing optical fibers is arranged on the base, and a lens group for focusing light is arranged at one end, far away from the base barrel, of the barrel body. The problem that the light focusing point of the lens group deviates from the end face of the optical fiber due to assembly errors and production errors can be relieved, and the strength and the effect of optical fiber receiving signals are improved.

Description

Laser radar antenna

Technical Field

The application relates to the field of laser radars, in particular to a laser radar antenna.

Background

Lasers are used in wind lidar and are used to receive optical signals. Laser radar antenna includes the barrel, and barrel one end is provided with the battery of lens, and optic fibre is installed to the other end of barrel, and in light penetrated into the barrel through the battery of lens, under the effect of battery of lens, the light focus point who sees through the battery of lens fell on the terminal surface of optic fibre to improve optic fibre received signal's intensity.

However, in practical production and practical use, due to the existence of assembly errors and production errors, the light focusing point of the lens group may deviate from the end face of the optical fiber, and the strength and effect of the optical fiber receiving signal are seriously affected.

SUMMERY OF THE UTILITY MODEL

In order to alleviate because assembly error and production error lead to seeing through the terminal surface of the skew optic fibre of light focus point of battery of lens for the problem that optic fibre received signal intensity and effect reduce, this application provides a laser radar antenna.

The application provides a laser radar antenna adopts following technical scheme:

the utility model provides a laser radar antenna, includes the barrel, the barrel both ends are opened, barrel one end sets up basic section of thick bamboo, it is provided with the base to slide in the basic section of thick bamboo, offer the through-hole that is used for supplying light to pass on the base, be provided with on the basic section of thick bamboo and be used for control the base is in axial position's in the basic section of thick bamboo control assembly, be provided with the optic fibre flange that is used for fixed optic fibre on the base, the barrel is kept away from the one end of basic section of thick bamboo is provided with the battery of lens that is used for focusing on light.

Through adopting above-mentioned technical scheme, operator control assembly adjusts the axial position of base in the base section of thick bamboo for light sees through the battery of lenses and assembles in a point, and this convergent point can just in time focus on the terminal surface of optic fibre, thereby increases optic fibre received signal's intensity, reduces because machining error and or assembly error lead to the condition that light convergent point deviates from the optic fibre terminal surface.

Optionally, the control assembly comprises an adjusting hand wheel coaxially connected with the base barrel in a threaded manner, a retaining ring is fixedly connected to the adjusting hand wheel, a guide barrel is arranged on the base, the guide barrel is arranged in the base barrel in a sliding manner coaxially, the retaining ring is abutted to the guide barrel, a spring is arranged in the guide barrel, the spring pushes the base to be away from the barrel, and the guide barrel is abutted to the retaining ring.

Through adopting above-mentioned technical scheme, under the normal condition, the spring promotes the base and keeps away from the barrel, and then makes to keep off the ring and support tightly in the guide cylinder. When the operator needs to adjust the interval between optic fibre terminal surface and the battery of lens, the operator unscrews each locking bolt earlier, removes the spacing effect to the guide cylinder. When an operator rotates the adjusting hand wheel to drive the baffle ring to move towards the cylinder body, the baffle ring pushes the guide cylinder to overcome the elastic force of the spring and move towards the cylinder body, so that the optical fiber end face and the lens group are close to each other; when an operator rotates the adjusting hand wheel to drive the blocking ring to move towards the direction away from the cylinder body, the blocking ring moves towards the direction away from the cylinder body, and the spring pushes the cylinder body to tightly abut against the blocking ring, so that the optical fiber end face and the lens group are away from each other. And the distance between the end face of the optical fiber and the lens group is adjusted, so that the light converging point is positioned on the end face of the optical fiber.

Optionally, waist shape hole has been seted up on the base section of thick bamboo, just the length direction in waist shape hole with the axis direction of base section of thick bamboo is parallel, it is provided with the locking bolt to slide along self length direction in the waist shape hole, locking bolt threaded connection in on the outer wall of guide cylinder, be provided with the briquetting on the locking bolt, the briquetting compress tightly in on the outer wall of base section of thick bamboo.

Through adopting above-mentioned technical scheme, the guide cylinder removes and drives the locking bolt and remove in waist shape hole, after the completion is to the position control of base, makes the briquetting compress tightly on the outer wall of guide cylinder through twisting locking bolt perpendicularly, and the restriction guide cylinder removes in the base cylinder, reduces the unexpected regulation hand wheel that rotates of operator, leads to the condition of optic fibre offset.

Optionally, a sealing barrel is arranged in the guide barrel, the spring is sleeved on the sealing barrel, a sealing lens is arranged in the sealing barrel, and the sealing lens is used for plugging the sealing barrel.

Through adopting above-mentioned technical scheme, set up sealed section of thick bamboo and sealed lens on the base, reduce the condition that the dust got into in the barrel.

Optionally, a first flange plate is fixedly connected to the base, a second flange plate is arranged on the first flange plate, an adjusting assembly used for controlling the axis angle of the second flange plate is arranged on the first flange plate, and the optical fiber flange is mounted on the second flange plate.

Through adopting above-mentioned technical scheme, the operator adjusts the axis angle of second ring flange through adjusting part for light convergent point can be accurate on falling on the fiber end face, is favorable to further improving optical fiber received signal's intensity.

Optionally, the adjusting assembly includes a plurality of threaded sleeves in threaded connection with the second flange plate, the number of threaded sleeves is not less than three, fastening bolts penetrate through each threaded sleeve, each fastening bolt is in clearance fit with the corresponding threaded sleeve, each fastening bolt is in threaded connection with the first flange plate, and each fastening bolt is sleeved with a backing ring;

each fastening bolt all compresses tightly the backing ring that corresponds on the thread bush, the backing ring orientation one side of thread bush is first sphere, just the thread bush corresponds the backing ring position seted up with first sphere complex first recess, the thread bush is kept away from one side of backing ring is the second sphere, just first ring flange corresponds the thread bush position seted up with second sphere complex second recess.

Through adopting above-mentioned technical scheme, when the operator need adjust optical fiber flange's axis angle, the operator moves the thread bush through twisting, and then adjusts the inclination of second flange dish axis to adjust the inclination of fiber end face, make light convergent point can be accurate on falling on the fiber end face.

Optionally, each thread sleeve is fixedly connected with a rotating ring, and each rotating ring is provided with a plurality of slots for inserting a wrench.

By adopting the technical scheme, when an operator rotates the rotating ring, the spanner is inserted into one of the slots of the corresponding rotating ring, so that the operator can conveniently screw the thread sleeve.

Optionally, a limiting groove is formed in the second flange plate, the optical fiber flange is embedded in the limiting groove, a plurality of arc-shaped holes are formed in the optical fiber flange in a penetrating manner, limiting bolts are arranged in the arc-shaped holes in a penetrating manner, and the limiting bolts are connected to the second flange plate through threads and tightly press the optical fiber flange in the limiting groove.

Through adopting above-mentioned technical scheme, the operator carries on spacingly to the fiber flange through setting up the spacing groove, and the operator is through wearing to establish spacing bolt in each arc is downthehole for spacing bolt compresses tightly the fiber flange in the spacing inslot, realizes that optic fibre can dismantle the connection on the second ring flange, so that the operator changes optic fibre.

In summary, the present application includes at least one of the following beneficial technical effects:

1. an operator drives the optical fiber to move along the axial direction of the barrel body by screwing the adjusting hand wheel, so that light rays penetrate through the lens group and converge points fall on the end face of the optical fiber, and the intensity of signals received by the optical fiber is increased;

2. the operator moves the thread bush through twisting, and then adjusts the inclination of second flange dish axis to adjust the inclination of fiber end face, make light convergent point can be accurate fall on fiber end face, further increase fiber receiving signal's intensity.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

FIG. 3 is a cross-sectional view of an embodiment of the present application for embodying a control assembly.

Fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Description of reference numerals: 1. a barrel; 11. a lens group; 12. an end plate; 13. a through hole; 14. a base cylinder; 15. a base; 16. a through hole; 2. a control component; 21. a guide cylinder; 22. a waist-shaped hole; 23. locking the bolt; 24. briquetting; 3. adjusting a hand wheel; 31. a baffle ring; 32. a connecting ring; 33. a sealing cylinder; 34. sealing the lens; 35. a ring groove; 36. pressing a ring; 37. a spring; 4. a first flange plate; 41. a second flange plate; 42. a limiting groove; 43. a fiber flange; 44. an arc-shaped hole; 45. a limit bolt; 5. an adjustment assembly; 51. a threaded sleeve; 52. a first threaded hole; 53. a rotating ring; 54. a slot; 55. fastening a bolt; 56. a second threaded hole; 6. a backing ring; 61. a first spherical surface; 62. a first groove; 63. a second spherical surface; 64. a second groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a laser radar antenna. As shown in fig. 1 and 2, the lidar antenna includes a cylindrical barrel 1, both ends of the barrel 1 are open, one end of the barrel 1 is fixedly connected with a lens group 11, one end of the barrel 1, which is far away from the lens group 11, is fixedly connected with a disc-shaped end plate 12 with the same axis, a through hole 13 is formed in the end plate 12, and the through hole 13 and the barrel 1 share the same axis. One end of the end plate 12, which is far away from the lens group 11, is fixedly connected with a cylindrical base barrel 14 coaxially, one end of the base barrel 14, which is far away from the end plate 12, is provided with a base 15 coaxially, the base 15 is a revolving body, and the base 15 is provided with a through hole 16 for light to pass through coaxially along the axial direction.

As shown in fig. 2 and 3, the base cylinder 14 is provided with a control assembly 2 for controlling the base 15 to move along the axial direction, the control assembly 2 includes a guide cylinder 21 coaxially screwed on the base cylinder 14, the guide cylinder 21 is cylindrical, and the guide cylinder 21 is coaxially slidably inserted in the base cylinder 14. Three waist-shaped holes 22 are formed in the outer peripheral surface of the base cylinder 14, the three waist-shaped holes 22 are uniformly arranged in the circumferential direction of the base cylinder 14, and the length directions of the three waist-shaped holes 22 are parallel to the axial direction of the base cylinder 14. All wear to be equipped with locking bolt 23 in the three waist shape hole 22, all fixedly connected with the annular briquetting 24 on each locking bolt 23, each locking bolt 23 all threaded connection is on the outer wall of guide cylinder 21, and locking bolt 23 compresses tightly briquetting 24 on base section of thick bamboo 14.

An adjusting hand wheel 3 is connected to one end of the base cylinder 14 far away from the end plate 12 through a thread, a circular blocking ring 31 is fixedly connected to the inner circumferential wall of the adjusting hand wheel 3 far away from the end plate 12 coaxially, the blocking ring 31 is sleeved on the base 15, and the inner diameter of the blocking ring 31 is smaller than the outer diameter of the guide cylinder 21. A connecting ring 32 is coaxially and fixedly connected to one end of the base cylinder 14 facing the end plate 12, a cylindrical sealing cylinder 33 is coaxially and threadedly connected to the connecting ring 32, and a sealing lens 34 for closing the sealing cylinder 33 is fixedly connected to the inside of the sealing cylinder 33. A ring groove 35 is opened at one end of the base cylinder 14 facing the end plate 12, an annular pressing ring 36 is coaxially arranged in the ring groove 35 of the base cylinder 14, a spring 37 is arranged between the pressing ring 36 and the base 15, one end of the spring 37 abuts against the base 15, and the other end of the spring 37 abuts against the pressing ring 36. The spring 37 is located in the guiding cylinder 21, and the spring 37 is sleeved on the sealing cylinder 33, the spring 37 pushes the base 15 to move towards the direction away from the end plate 12, so that the guiding cylinder 21 abuts against the stop ring 31.

The outer peripheral wall of the end plate 12 far away from the base 15 is fixedly connected with a circular ring-shaped first flange plate 4 with the same axis, one side of the base 15 far away from the end plate 12 is provided with a circular ring-shaped second flange plate 41, and the first flange plate 4 is provided with an adjusting component 5 for adjusting the axis angle of the second flange plate 41. One side of the second flange plate 41 departing from the first flange plate 4 is coaxially provided with a circular limiting groove 42, an optical fiber flange 43 for fixing an optical fiber is embedded in the limiting groove 42, the optical fiber flange 43 is a rotary body, and the optical fiber flange 43 and the second flange plate 41 share the same central axis. The second flange plate 41 is provided with three arc-shaped arc holes 44 along the axis direction, the three arc holes 44 are uniformly distributed around the central axis of the optical fiber flange 43, and the central axis of each arc hole 44 is collinear with the central axis of the optical fiber flange 43. Limiting bolts 45 penetrate through the arc-shaped holes 44, the limiting bolts 45 are in threaded connection with the bottom wall of the limiting groove 42, and the optical fiber flange 43 is tightly pressed in the limiting groove 42.

As shown in fig. 3 and 4, the adjusting assembly 5 includes three threaded sleeves 51, three first threaded holes 52 are formed in the second flange 41, and the three first threaded holes 52 are uniformly distributed around the circumferential direction of the second flange. The thread bush 51 corresponds to the first thread hole 52 one by one, and the thread bush 51 is connected in the corresponding first thread hole 52 in a threaded manner, the rotating ring 53 is integrally formed with the same axis on the peripheral surface of each thread bush 51, and a plurality of slots 54 for an operator to insert a wrench are formed on the peripheral surface of each rotating ring 53. Each thread bush 51 is cylindricly, and all coaxially wears to be equipped with fastening bolt 55 in each thread bush 51, and thread bush 51 and the fastening bolt 55 clearance fit that corresponds, and second screw hole 56 has all been seted up to the corresponding each thread bush 51 position of first ring flange 4, and the equal threaded connection of each fastening bolt 55 is in the second screw hole 56 that corresponds.

Each fastening bolt 55 is sleeved with an annular backing ring 6, the locking bolt 23 presses the backing ring 6 onto the corresponding threaded sleeve 51, and the threaded sleeve 51 is pressed onto the first flange 4. One end of the backing ring 6 facing the corresponding threaded sleeve 51 is a first spherical surface 61, and one side of the threaded sleeve 51 facing the backing ring 6 is provided with a first groove 62 for matching with the first spherical surface 61; one side of the threaded sleeve 51 facing the first flange plate 4 is a second spherical surface 63, and a second groove 64 used for being matched with the second spherical surface 63 is formed in the position of the first flange plate 4 corresponding to each threaded sleeve 51. An operator changes the local distance between the first flange plate 4 and the second flange plate 41 by adjusting the distance of screwing each thread sleeve 51 into the corresponding first thread hole 52, and further adjusts the axis angle of the second flange plate 41, thereby achieving the purpose of adjusting the end face angle of the optical fiber.

The implementation principle of the embodiment of the application is as follows: light is focused to a position close to the optical fiber through the lens group 11, and then an operator needs to loosen each locking bolt 23 to release the limiting effect on the guide cylinder 21. Then, the operator drives the base 15 to move along the axial direction of the base cylinder 14 by twisting the adjusting handwheel 3, so that the light falls on the end face of the optical fiber through the focusing point of the lens group 11. After completing the adjustment of the axial position of the end face of the optical fiber along the base cylinder 14, the operator tightens each locking bolt 23 and abuts against the guide cylinder 21 to limit the axial displacement of the optical fiber along the guide cylinder 21. Finally, the operator adjusts the inclination angle of the optical fiber flange 43 by twisting the position of each threaded sleeve, and further adjusts the inclination angle of the optical fiber end face, so that the light converging point can accurately fall on the optical fiber end face, and the strength of optical fiber receiving signals is increased.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A lidar antenna, comprising: the optical fiber focusing lens comprises a barrel body (1), the two ends of the barrel body (1) are opened, a base barrel (14) is arranged at one end of the barrel body (1), a base (15) is arranged in the base barrel (14) in a sliding mode, a through hole (16) used for allowing light to pass through is formed in the base (15), a control assembly (2) used for controlling the axial position of the base barrel (14) is arranged on the base barrel (14), an optical fiber flange (43) used for fixing optical fibers is arranged on the base (15), and a lens group (11) used for focusing light is arranged at one end of the base barrel (14) and is far away from the barrel body (1).

2. A lidar antenna according to claim 1, wherein: control assembly (2) including with axle center threaded connection in adjusting hand wheel (3) on basic section of thick bamboo (14), fixedly connected with keeps off ring (31) on adjusting hand wheel (3), be provided with guide cylinder (21) on base (15), just guide cylinder (21) with the axle center slide set up in basic section of thick bamboo (14), keep off ring (31) butt in on guide cylinder (21), be provided with spring (37) in guide cylinder (21), spring (37) promote base (15) are kept away from barrel (1), and make guide cylinder (21) support tightly keep off ring (31).

3. A lidar antenna according to claim 2, wherein: waist shape hole (22) have been seted up on base section of thick bamboo (14), just the length direction in waist shape hole (22) with the axis direction of base section of thick bamboo (14) is parallel, it is provided with locking bolt (23) to slide along self length direction in waist shape hole (22), locking bolt (23) threaded connection in on the outer wall of guide cylinder (21), be provided with briquetting (24) on locking bolt (23), briquetting (24) compress tightly in on the outer wall of base section of thick bamboo (14).

4. A lidar antenna according to claim 2, wherein: a sealing barrel (33) is arranged in the guide barrel (21), the spring (37) is sleeved on the sealing barrel (33), a sealing lens (34) is arranged in the sealing barrel (33), and the sealing lens (34) is used for plugging the sealing barrel (33).

5. A lidar antenna according to claim 1, wherein: the optical fiber connector is characterized in that a first flange plate (4) is fixedly connected to the base (15), a second flange plate (41) is arranged on the first flange plate (4), an adjusting component (5) used for controlling the axis angle of the second flange plate (41) is arranged on the first flange plate (4), and an optical fiber flange (43) is installed on the second flange plate (41).

6. Lidar antenna according to claim 5, characterized in that: the adjusting assembly (5) comprises a plurality of thread sleeves (51) which are in threaded connection with the second flange plate (41), the number of the thread sleeves (51) is not less than three, fastening bolts (55) penetrate through each thread sleeve (51), each fastening bolt (55) is in clearance fit with the corresponding thread sleeve (51), each fastening bolt (55) is in threaded connection with the first flange plate (4), and each fastening bolt (55) is sleeved with a cushion ring (6);

each fastening bolt (55) all compresses tightly corresponding backing ring (6) on thread bush (51), backing ring (6) orientation one side of thread bush (51) is first sphere (61), just thread bush (51) correspond backing ring (6) position seted up with first sphere (61) complex first recess (62), thread bush (51) are kept away from one side of backing ring (6) is second sphere (63), just first ring flange (4) correspond thread bush (51) position seted up with second sphere (63) complex second recess (64).

7. A lidar antenna according to claim 6, wherein: each thread bush (51) is fixedly connected with a rotating ring (53), and each rotating ring (53) is provided with a plurality of slots (54) for inserting a wrench.

8. A lidar antenna according to claim 5, wherein: the utility model discloses a cable tie-in device, including second ring flange (41), the spacing groove has been seted up on second ring flange (41) (42), fiber flange (43) are inlayed and are located in spacing groove (42), run through on fiber flange (43) and have seted up a plurality of arc holes (44), each limit bolt (45) all wear to be equipped with in arc hole (44), each equal threaded connection of limit bolt (45) in on second ring flange (41), and will fiber flange (43) compress tightly in spacing groove (42).