Target flipping device

Abstract

The present invention provides a target flipping device, which comprises a target (80), a support plate for being fixedly connected to a bracket, and a servo electric cylinder (32). The support plate and the target (80) are rotatably connected to a first rotation axis (X), so that the target (80) can rotate relative to the support plate around the first rotation axis (X) in a first rotation direction (A). The extension rod of the servo electric cylinder (32) is rotatably connected to the target (80) on one side of the first rotation axis (X). The servo electric cylinder (32) can provide a driving force to rotate the target (80) in the first rotation direction (A). The first rotation axis (X) is parallel to the target (80). The target flipping device according to the present invention has high flipping accuracy.

Description

Technical Field

[0001] The present invention relates to the field of vehicle intelligent detection devices, and in particular to a target flipping device. Background Art

[0002] The calibration of the Adaptive Cruise Control (ACC) radar in vehicle intelligent detection requires the use of a target flipping device with precise angle adjustment.

[0003] Existing target flipping devices may include a cylinder, a rotating bearing, and a positioning block. In this structure, the cylinder pushes the target to the positioning block to maintain a fixed flip angle. The accuracy of the target flip angle depends solely on the machining precision of the components and the positioning of the positioning block. This accuracy is poor, and deteriorates with age. Furthermore, the cylinder may be affected by air pressure, making flip accuracy unreliable. Summary of the Invention

[0004] The purpose of the present invention is to overcome or at least alleviate the deficiencies of the above-mentioned prior art and to provide a target flipping device.

[0005] The present invention provides a target flipping device, which includes a target, a support plate fixedly connected to a bracket, and a servo electric cylinder.

[0006] The support plate and the target are rotatably connected to a first rotation axis, so that the target can rotate relative to the support plate around the first rotation axis in a first rotation direction.

[0007] The extension rod of the servo electric cylinder is rotatably connected to the target on one side of the first rotation axis, and the servo electric cylinder can provide a driving force to rotate the target in the first rotation direction.

[0008] The first rotation axis is parallel to the target.

[0009] In at least one embodiment, the support plate includes a front support plate, a rear support plate, a first connecting block and bolts.

[0010] The rear support plate is used to connect with the bracket,

[0011] The front support plate is connected to the target,

[0012] The first connecting block is at least partially located between the front support plate and the rear support plate and connects the front support plate and the rear support plate so that the front support plate and the rear support plate are not in direct contact.

[0013] The first connecting block is rotatably connected to the front support plate or the rear support plate on a second rotation axis.

[0014] The bolts are distributed at least on both sides of the second rotation axis. Adjusting the tightness of the bolts can adjust the distance between the front support plate and the rear support plate at the bolts, thereby adjusting the rotation angle of the front support plate relative to the rear support plate around the second rotation axis in the second rotation direction, and finally adjusting the rotation angle of the target in the second rotation direction.

[0015] The second rotation axis is parallel to the target and perpendicular to the first rotation axis.

[0016] In at least one embodiment, the first connection block is rotationally connected to the front support plate or the rear support plate via a driving screw, and a central axis of the driving screw is the second rotation axis.

[0017] In at least one embodiment, the target flipping device further includes a second connecting block, a first rotary bearing and a first rotary bearing seat.

[0018] One end of the second connecting block is rotatably connected to the first rotary bearing, and the other end is fixedly connected to the support plate.

[0019] The first rotary bearing is mounted on the first rotary bearing seat and is capable of rotating in the first rotation direction.

[0020] The first rotating bearing seat is fixed on the target.

[0021] In at least one embodiment, the target has a nominal center.

[0022] When the target and the support plate are parallel to each other,

[0023] A vertical projection of the first rotation axis on the target passes through the calibration center.

[0024] In at least one embodiment, the target flipping device further includes a third connecting block, and the third connecting block is used to connect the servo electric cylinder and the support plate.

[0025] In at least one embodiment, the third connecting block includes two connecting blocks rotatably connected in the first rotation direction, one of the connecting blocks is fixedly connected to the support plate, and the other connecting block is fixedly connected to the non-extended rod portion of the servo cylinder.

[0026] In at least one embodiment, the target flipping device further includes a fisheye bearing, a second rotary bearing, and a second rotary bearing seat.

[0027] One end of the fisheye bearing is connected to the extension rod of the servo electric cylinder, and the other end is rotatably connected to the second rotary bearing. The fisheye bearing can rotate around the central axis of the second rotary bearing in the first rotation direction.

[0028] The second rotary bearing is mounted on the second rotary bearing seat and is capable of rotating in the first rotation direction.

[0029] The second rotary bearing seat is fixed on the target.

[0030] In at least one embodiment, the target flipping device further includes a control system.

[0031] The control system can control the rotation of the servo motor of the servo electric cylinder, thereby controlling the extension length of the extension rod, and ultimately controlling the rotation angle of the target in the first rotation direction.

[0032] The target turning device according to the present invention has high turning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figures 1 to 3 Schematic diagram of a target flipping device according to one embodiment of the present invention.

[0034] Figure 4 It is a partially enlarged schematic diagram of a target flipping device according to one embodiment of the present invention.

[0035] Figure 5 4 is a top view of a target flipping device according to one embodiment of the present invention.

[0036] Figures 6 to 8 Schematic diagram of a target flipping device according to one embodiment of the present invention during the upside-down flipping process.

[0037] Description of Reference Numerals

[0038] 80 targets;

[0039] 11 first connecting block; 12 front support plate; 13 rear support plate; 14 bolt; 15 plug screw;

[0040] 21 second connecting block; 22 first rotary bearing; 23 first rotary bearing seat;

[0041] 31 third connecting block; 32 servo electric cylinder; 33 fisheye bearing; 34 second rotary bearing; 35 second rotary bearing seat;

[0042] X first rotation axis; Y second rotation axis;

[0043] A: first rotation direction; B: second rotation direction. DETAILED DESCRIPTION

[0044] The following describes exemplary embodiments of the present invention with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, and are not intended to exhaust all possible embodiments of the present invention, nor to limit the scope of the present invention.

[0045] The target flipping device according to one embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] The target flipping device of this embodiment includes a target 80 placed approximately vertically, a first connection portion for fine-tuning the left-right flipping angle of the target 80, and second and third connection portions for adjusting the up-and-down flipping angles of the target 80. The left-right flipping direction of the target 80 is the second rotational direction B, and the up-and-down flipping direction of the target 80 is the first rotational direction A.

[0047] Target 80 can be a thin plate of any shape, such as a square, circular, or polygonal plate. The front panel of target 80 may have a pattern indicating the calibration center. The calibration center may be located at the center of gravity or the center of symmetry of target 80. The first, second, and third connecting portions are located on the side of target 80 where the rear panel is located.

[0048] The first connecting portion includes a support plate for being fixedly connected to the bracket, and the support plate includes a first connecting block 11, a front support plate 12 and a rear support plate 13. The rear support plate 13 may have a plurality of threaded holes, etc., for being fixedly connected to a bracket not shown in the figure. The front support plate 12 and the rear support plate 13 are arranged in the front-to-back direction and are roughly parallel, and a first connecting block 11 is provided between the front support plate 12 and the rear support plate 13 to achieve non-contact fixation of the two plates. The first connecting block 11 and at least one of the front support plate 12 and the rear support plate 13 are rotatably connected on the second rotation axis Y, so that the front support plate 12 can rotate relative to the rear support plate 13 around the second rotation axis Y in the second rotation direction B. In this embodiment, the rear support plate 13 is fixedly connected to the first connecting block 11, and the front support plate 12 and the first connecting block 11 can be connected to rotate relative to each other around the second rotation axis Y.

[0049] Preferably, when the target 80, the front support plate 12, and the rear support plate 13 are parallel to each other, the vertical projection of the second rotation axis Y on the target 80 passes through the calibration center of the target 80. In this embodiment, the vertical projection of the second rotation axis Y on the target 80 is the left-right symmetry axis of the target 80, and the calibration center of the target 80 is located on its left-right symmetry axis.

[0050] Reference Figure 2Preferably, the center positions of the upper and lower side surfaces of the front support plate 12 can be rotatably connected to a first connecting block 11 through a plug screw 15, and the center positions of the upper and lower side surfaces of the rear support plate 13 can be fixedly connected to a first connecting block 11 through two fastening screws.

[0051] On either side of the second rotation axis Y, i.e., on the left and right sides relative to the first connecting block 11 in the figure, the front support plate 12 and the rear support plate 13 may have bolts 14 for adjusting the relative angle between them. Specifically, the bolts 14 may be threadedly connected to the rear support plate 13 and abut against the front support plate 12. By adjusting the tightness of the bolts 14 on either side, the distance between the front support plate 12 and the rear support plate 13 at the locations of the bolts 14 on either side may be fine-tuned. In other words, the front support plate 12 may be rotated relative to the rear support plate 13 about the second rotation axis Y, thereby fine-tuning the left-right flip angle of the target 80.

[0052] There is at least one bolt 14 on each side of the second rotation axis Y. Preferably, there may be four bolts 14 between the front support plate 12 and the rear support plate 13 distributed at the four corners in a rectangular shape, and the bolts 14 on both sides are symmetrically distributed relative to the second rotation axis Y.

[0053] The second connection portion may include a second connection block 21, a first rotational bearing 22, and a first rotational bearing seat 23. One end of the second connection block 21 is fixedly connected to the front support plate 12, and the other end is connected to the first rotational bearing 22. The first rotational bearing 22 is mounted on the first rotational bearing seat 23 and is rotatable about its central axis. The first rotational bearing seat 23 is mounted on the rear panel of the target 80. Thus, the target 80 can rotate relative to the front support plate 12 in the first rotation direction A via the first rotational bearing 22, that is, the target 80 can swing back and forth.

[0054] Preferably, on the left and right sides of the front support plate 12, there can be two groups of second connecting blocks 21, first rotating bearings 22 and first rotating bearing seats 23 to form a second connecting part for connecting with the target 80, wherein the central axes of the two first rotating bearings 22 coincide to extend the length of the second connecting part in the left and right directions and improve the strength and stability of the connection.

[0055] Alternatively, when the length of the second connecting portion formed by a group of second connecting blocks 21, the first rotating bearing 22 and the first rotating bearing seat 23 in the left and right directions is long enough to ensure the strength and stability of the connection, only one group of second connecting blocks 21, the first rotating bearing 22 and the first rotating bearing seat 23 can form the second connecting portion to connect the front support plate 12 and the target 80.

[0056] Preferably, when the target 80 and the support plate are parallel to each other, the vertical projection of the first rotation axis X (i.e., the central axis of the first rotary bearing 22) on the target 80 passes through the calibration center of the target 80. In this embodiment, the vertical projection of the first rotation axis X on the target 80 is the vertical symmetry axis of the target 80, and the calibration center of the target 80 is located on its vertical symmetry axis.

[0057] The third connection portion includes a third connection block 31 , a servo electric cylinder 32 as a driving mechanism, a fisheye bearing 33 , a second rotary bearing 34 and a second rotary bearing seat 35 .

[0058] The third connecting block 31 comprises two connecting blocks rotatably connected in a first rotational direction A. One connecting block is fixedly connected to the front support plate 12, and the other connecting block is fixedly connected to the non-extended rod portion of the servo cylinder 32, thereby connecting the front support plate 12 and the servo cylinder 32. In this embodiment, the third connecting block 31 comprises two hinged L-shaped connecting blocks. This rotatable structure of the third connecting block 31 allows for slight changes in the position of the servo cylinder 32 relative to the front support plate 12 to accommodate the rotation of the target 80.

[0059] Reference Figure 3 and Figure 4 The end of the extended rod of the servo electric cylinder 32 is connected to the rear panel of the target 80 through a fisheye bearing 33, a second rotary bearing 34 and a second rotary bearing seat 35.

[0060] Specifically, one end of the fisheye bearing 33 is connected to the extension rod of the servo cylinder 32 , and the other end is rotatably connected to the second rotary bearing 34 , so that the fisheye bearing 33 can rotate in the first rotation direction A around the central axis of the second rotary bearing 34 .

[0061] The second rotary bearing 34 is mounted on the second rotary bearing seat 35 , and the second rotary bearing 34 can rotate in the first rotation direction A around its central axis.

[0062] The second rotary bearing seat 35 is mounted on the rear panel of the target 80. The second rotary bearing seat 35 can be located above or below the first rotary bearing seat 23 (in the drawings, the second rotary bearing seat 35 is located above the first rotary bearing seat 23).

[0063] The target flipping device according to this embodiment may further include a control system, which is connected to the servo electric cylinder 32 and is capable of controlling the rotation of the servo motor of the servo electric cylinder 32, thereby controlling the extension length of the extension rod, so that the target 80 rotates around the first rotation axis X in the first rotation direction A to adjust the angle of the target 80 swinging back and forth.

[0064] Compared with the pneumatic cylinder, the servo motor of the servo electric cylinder 32 has higher precision and stability, and can more accurately control the angle of the target 80 rotating up and down.

[0065] Reference Figures 6 to 8 The target flipping device according to the present invention can meet the following requirements: the maximum deviation between the normal line of the calibration center of the target and the vehicle driving axis before calibration is 0.15°; during calibration, the target can be calibrated at -2° / 0° / +2° positions (the angle between the vertical plane of the 0° target and the vehicle driving plane is 0°, the -2° / +2° target is flipped up and down 2°, refer to Figure 6 and Figure 8 ), and the maximum allowed angular deviation is 0.05°.

[0066] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications to the above embodiments under the guidance of the present invention without departing from the scope of the present invention.

Claims

1. A target flipping device, comprising a target (80), characterized in that: It also includes a support plate and a servo electric cylinder (32) for fixed connection with the bracket, The support plate and the target (80) are rotatably connected to a first rotation axis (X), so that the target (80) can rotate relative to the support plate around the first rotation axis (X) in a first rotation direction (A). The extension rod of the servo electric cylinder (32) and the target (80) are rotatably connected to one side of the first rotation axis (X), and the servo electric cylinder (32) can provide a driving force to rotate the target (80) in the first rotation direction (A). The first rotation axis (X) is parallel to the target (80), The target flipping device also includes a control system, The control system can control the rotation of the servo motor of the servo electric cylinder (32), thereby controlling the extension length of the extension rod, and ultimately controlling the rotation angle of the target (80) in the first rotation direction (A).

2. The target flipping device according to claim 1, characterized in that: The support plate comprises a front support plate (12), a rear support plate (13), a first connecting block (11) and bolts (14). The rear support plate (13) is used to connect with the bracket. The front support plate (12) is connected to the target (80), The first connecting block (11) is at least partially located between the front support plate (12) and the rear support plate (13) and connects the front support plate (12) and the rear support plate (13), so that the front support plate (12) and the rear support plate (13) are not in direct contact. The first connecting block (11) is rotatably connected to the front support plate (12) or the rear support plate (13) on a second rotation axis (Y), The bolts (14) are distributed at least on both sides of the second rotation axis (Y). Adjusting the tightness of the bolts (14) can adjust the distance between the front support plate (12) and the rear support plate (13) at the bolts (14), thereby adjusting the rotation angle of the front support plate (12) relative to the rear support plate (13) around the second rotation axis (Y) in the second rotation direction (B), and finally adjusting the rotation angle of the target (80) in the second rotation direction (B). The second rotation axis (Y) is parallel to the target (80) and perpendicular to the first rotation axis (X).

3. The target flipping device according to claim 2, characterized in that: The first connecting block (11) is rotationally connected to the front support plate (12) or the rear support plate (13) via a driving screw, and the central axis of the driving screw is the second rotation axis (Y).

4. The target flipping device according to claim 1, characterized in that: The target flipping device further includes a second connecting block (21), a first rotary bearing (22) and a first rotary bearing seat (23). One end of the second connecting block (21) is rotatably connected to the first rotary bearing (22), and the other end is fixedly connected to the support plate. The first rotary bearing (22) is mounted on the first rotary bearing seat (23) and is capable of rotating in the first rotation direction (A). The first rotating bearing seat (23) is fixed on the target (80).

5. The target flipping device according to claim 1, characterized in that: The target (80) has a calibration center, When the target (80) and the support plate are parallel to each other, The vertical projection of the first rotation axis (X) on the target (80) passes through the calibration center.

6. The target flipping device according to claim 1, characterized in that: The target flipping device further comprises a third connecting block (31), and the third connecting block (31) is used to connect the servo electric cylinder (32) and the support plate.

7. The target flipping device according to claim 6, characterized in that: The third connecting block (31) includes two connecting blocks rotatably connected in the first rotation direction (A), wherein one of the connecting blocks is fixedly connected to the support plate, and the other connecting block is fixedly connected to the non-extended rod portion of the servo electric cylinder (32).

8. The target flipping device according to claim 1, characterized in that: The target flipping device further comprises a fisheye bearing (33), a second rotary bearing (34) and a second rotary bearing seat (35). One end of the fisheye bearing (33) is connected to the extension rod of the servo electric cylinder (32), and the other end is rotatably connected to the second rotary bearing (34). The fisheye bearing (33) can rotate around the central axis of the second rotary bearing (34) in the first rotation direction (A). The second rotary bearing (34) is mounted on the second rotary bearing seat (35) and is capable of rotating in the first rotation direction (A). The second rotary bearing seat (35) is fixed on the target (80).

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