Back supporting equipment for large-aperture reflector of laser radar

Abstract

The utility model belongs to the technical field of optics, and discloses a back support device for a large-aperture reflector of a laser radar, which comprises an outer annular sleeve and an inner annular sleeve, the outer annular sleeve and the inner annular sleeve are coaxially arranged, and the inner end of the outer annular sleeve is provided with a plurality of limiting grooves. According to the scheme, the inner annular sleeve used for fixing the reflecting mirror can drive the multiple limiting blocks to move by pushing the multiple limiting blocks to rotate, then the multiple dampers are extruded, and under the action of the multiple dampers, the multiple dampers are driven to rotate, so that the reflecting mirror is fixed to the inner annular sleeve. The radial stress generated when part of the reflecting mirror is installed in the inner annular sleeve can be effectively eliminated, deformation of the reflecting mirror caused by the stress is reduced, the inner annular sleeve and the multiple gears are designed to be separated, the gear rings are connected with the gears in a meshed mode, the stability of the inner annular sleeve can be guaranteed, and the service life of the reflecting mirror is prolonged. And movement interference among the multiple limiting blocks can be avoided, and the practicability and reliability of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical technology field especially relates to a back support equipment of laser radar large aperture reflector. BACKGROUND

[0002] The laser radar reflector is an important component in the laser radar system, is used for receiving and reflecting laser pulse, and the advantages and disadvantages of its support structure can directly affect the surface figure of the reflector, thereby affecting the imaging quality of the whole optical system, since the aperture of some reflectors is relatively large, assembly stress and temperature stress are easily generated in the installation process, thereby causing the optical surface to be unable to align or deform, thereby causing the imaging quality of the whole optical system to decrease.

[0003] Through the search, the utility model discloses a support structure of optical reflector, is connected with back plate through elastic connecting column, can eliminate part axial stress in the installation process of reflector, reduces the deformation of reflector due to stress.

[0004] But practical application finds that this technical scheme still has at least the following defects:

[0005] The scheme is provided with a plurality of dampers between the inner bushing and the outer bushing, which are used for eliminating part of the radial stress of the reflector and reducing the deformation of the reflector due to stress, but the dampers can only move forward and backward at fixed straight-line positions, and the plurality of dampers are arranged in a ring shape at equal intervals in this scheme, which can cause the dampers at different angles on the movement track of the inner bushing to be unable to contract when the inner bushing moves, resulting in movement interference and making the dampers unable to eliminate stress. UTILITY MODEL CONTENTS

[0006] The utility model intends to provide a back support equipment of laser radar large aperture reflector to solve the problems in the above background technology, the inner ring sleeve for fixing the reflector in the scheme can drive the plurality of limiting blocks to move by rotating the plurality of limiting blocks, thereby extruding the plurality of dampers, and under the action of the plurality of dampers, part of the radial stress of the reflector installed in the inner ring sleeve can be effectively eliminated, and the deformation of the reflector due to stress can be reduced, the inner ring sleeve is designed separately from the plurality of gears, is connected by meshing the gear ring and the gear, can not only guarantee the stability of the inner ring sleeve, but also can avoid movement interference between the plurality of limiting blocks, and improve the practicability and reliability of the device.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A back support device for a large-aperture lidar reflector includes an outer annular sleeve and an inner annular sleeve, which are coaxially arranged. The inner end of the outer annular sleeve has multiple limiting grooves, and each of the multiple limiting grooves is provided with a limiting block that matches the shape of the inner cavity. The ends of the multiple limiting blocks that are close to each other are rotatably connected to gears. The outer end of the outer annular sleeve is fixedly connected to multiple dampers, which extend into the interior of the multiple limiting grooves and are fixedly connected to the limiting blocks. The outer end of the inner annular sleeve has an annular recessed groove that matches the gears, and the ends of the multiple gears that are close to each other are located inside the annular recessed groove.

[0009] Preferably, the plurality of dampers and the plurality of limiting blocks are arranged in a ring at equal intervals.

[0010] Preferably, a slider is fixedly connected to the outer end of the limiting block, and a sliding groove is formed on the inner wall of the limiting groove, with the slider and the sliding groove being slidably connected.

[0011] Preferably, a gear ring is fixedly connected to the inner wall of the annular sinking groove, and multiple gears are meshed with the gear ring.

[0012] Preferably, torsion springs are fitted on the outer ends of both sides of the gear, and the two ends of the torsion springs are fixedly connected to the gear and the limiting block, respectively.

[0013] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0014] In this design, the internal annular sleeve used to fix the reflector can drive multiple limiting blocks to move by rotating them, thereby compressing multiple dampers. Under the action of multiple dampers, the radial stress of the reflector installed in the internal annular sleeve can be effectively eliminated, reducing the deformation of the reflector caused by stress. The internal annular sleeve is designed to be separate from multiple gears, and the gears are meshed with the gear ring. This not only ensures the stability of the internal annular sleeve, but also avoids motion interference between multiple limiting blocks, improving the practicality and reliability of the device. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of this utility model;

[0016] Figure 2 A schematic diagram of the first exploded structure provided for this utility model;

[0017] Figure 3 This is a schematic diagram of the second explosive structure provided by this utility model;

[0018] Figure 4 A schematic diagram of the third explosive structure provided by this utility model.

[0019] Reference numerals: 1. Outer annular sleeve; 2. Inner annular sleeve; 3. Damper; 4. Limiting block; 5. Gear; 6. Torsion spring; 7. Slider; 8. Limiting groove; 9. Slide groove; 10. Annular recessed groove; 11. Gear ring. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0021] like Figures 1-3 The back support device for a large-aperture lidar reflector shown includes an outer annular sleeve 1 and an inner annular sleeve 2, which are coaxially arranged. The inner end of the outer annular sleeve 1 has multiple limiting grooves 8, and each limiting groove 8 has a limiting block 4 that matches the shape of the inner cavity. The ends of the multiple limiting blocks 4 that are close to each other are rotatably connected to gears 5. The outer end of the outer annular sleeve 1 is fixedly connected to multiple dampers 3, which extend into the interior of the multiple limiting grooves 8 and are fixedly connected to the limiting blocks 4. The outer end of the inner annular sleeve 2 has an annular recessed groove 10 that matches the gears 5. The ends of the multiple gears 5 that are close to each other are located inside the annular recessed groove 10. The multiple dampers 3 and the multiple limiting blocks 4 are arranged in annular and equidistant. The outer end of the limiting block 4 is fixedly connected to a slider 7. The inner wall of the limiting groove 8 has a sliding groove 9, and the slider 7 and the sliding groove 9 are slidably connected.

[0022] In this design, the reflector can be attached to the inner end of the inner annular sleeve 2 via its own cylindrical base. Regardless of the radial direction in which the reflector moves, it can push the corresponding limiting block 4 in the limiting groove 8, thereby compressing the damper 3 connected to the limiting block 4. The inner annular sleeve 2 of the limiting blocks 4 located on both sides of the moving direction will rotate the gear 5 by pressing it, thus pushing the corresponding limiting block 4 in the limiting groove 8. This, through the action of multiple dampers 3, eliminates partial... To reduce radial stress in the inner annular sleeve 2, the inner annular sleeve 2 and multiple gears 5 are designed to be separate. The rotation of the gears 5 drives the corresponding limiting grooves 8 to move, so that the movement between the multiple limiting grooves 8 will not interfere. The multiple gears 5 are embedded in the annular recessed groove 10, which can limit the inner annular sleeve 2 and prevent it from falling out of the outer annular sleeve 1. The sliding connection between the slider 7 and the slide groove 9 can improve the stability of the limiting block 4 when it moves.

[0023] like Figure 2 and 4As shown, a gear ring 11 is fixedly connected to the inner wall of the annular sink trough 10, and multiple gears 5 are meshed with the gear ring 11. Torsion springs 6 are sleeved on the outer ends of both sides of the gears 5, and the two ends of the torsion springs 6 are fixedly connected to the gears 5 and the limiting block 4 respectively.

[0024] In this design, the meshing connection between gear 5 and gear ring 11 can limit the movement of the inner annular sleeve 2. Since the rotation of multiple gears 5 will cause compression or stretching of the corresponding torsion spring 6, multiple gears 5 will reset under the elastic force of the torsion spring 6 after losing their force. This setting can prevent the inner annular sleeve 2 from rotating on its own at the inner end of the outer annular sleeve 1, while not affecting the rotation of the gear 5 driven by the inner annular sleeve 2.

[0025] The specific implementation process is as follows:

[0026] In use, the reflector is attached to the inner end of the inner annular sleeve 2 via its own cylindrical base. Regardless of the radial direction in which the reflector moves, it can push the corresponding limiting block 4 in the limiting groove 8 to move, thereby squeezing the damper 3 connected to the limiting block 4. The limiting blocks 4 located on both sides in the direction of movement are pushed by the inner annular sleeve 2 to rotate by squeezing gears 5. The gears 5 push the corresponding limiting blocks 4 to move in the limiting groove 8. Thus, the radial stress of the reflector installed in the inner annular sleeve 2 is eliminated by the action of multiple dampers 3. When the multiple gears 5 rotate, they will squeeze or stretch the corresponding torsion springs 6. Therefore, after the multiple gears 5 lose their force, they will be reset by the elastic force of the torsion springs 6, thereby preventing the inner annular sleeve 2 from rotating on its own at the inner end of the outer annular sleeve 1, while not affecting the rotation of the gears 5 driven by the inner annular sleeve 2.

[0027] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A back support device for a large-aperture lidar reflector, characterized in that: The device includes an outer annular sleeve (1) and an inner annular sleeve (2), which are coaxially arranged. The inner end of the outer annular sleeve (1) is provided with multiple limiting grooves (8), and each of the multiple limiting grooves (8) is provided with a limiting block (4) that matches the shape of the inner cavity. Each of the multiple limiting blocks (4) is rotatably connected to a gear (5) at one end close to each other. The outer end of the outer annular sleeve (1) is fixedly connected with multiple dampers (3), which extend into the interior of the multiple limiting grooves (8) and are fixedly connected to the limiting blocks (4). The outer end of the inner annular sleeve (2) is provided with an annular recessed groove (10) that matches the gear (5), and the ends of the multiple gears (5) that are close to each other are located inside the annular recessed groove (10).

2. The back support device for a large-aperture lidar reflector as described in claim 1, characterized in that: The multiple dampers (3) and the multiple limiting blocks (4) are arranged in a ring at equal intervals.

3. The back support device for a large-aperture lidar reflector as described in claim 1, characterized in that: The outer end of the limiting block (4) is fixedly connected to a slider (7), and the inner wall of the limiting groove (8) is provided with a sliding groove (9). The slider (7) and the sliding groove (9) are slidably connected.

4. The back support device for a large-aperture lidar mirror as described in claim 1, characterized in that: The inner wall of the annular sinking groove (10) is fixedly connected with a gear ring (11), and multiple gears (5) are meshed with the gear ring (11).

5. The back support device for a large-aperture lidar mirror as described in claim 1, characterized in that: The outer ends of both sides of the gear (5) are fitted with torsion springs (6), and the two ends of the torsion springs (6) are fixedly connected to the gear (5) and the limiting block (4) respectively.

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