Reciprocating calibration plate

Abstract

The utility model discloses a reciprocating calibration plate which comprises a portal frame, two first sliding grooves are formed in the two sides of the inner wall of the portal frame, two first sliding blocks are connected into the two first sliding grooves in a sliding mode, cross rods are fixedly connected to the sides, close to each other, of the two first sliding blocks, and a transmission assembly is arranged in the portal frame and used for controlling the cross rods to move. A reciprocating assembly is arranged in the transverse rod and comprises a second sliding groove formed in the side wall of the transverse rod, a reciprocating lead screw rotationally connected with the side wall of the second sliding groove and a second sliding block in threaded connection with the reciprocating lead screw, and a mounting plate assembly is arranged on the side wall of the second sliding block. According to the utility model, through the cooperation of the mounting plate assembly, the calibration plate body, the plug board and the jacks, the calibration plate body can be stably mounted on the fixed plate, the stability is good, the influence on the calibration result is avoided, the calibration plate body can be simply mounted on the mounting plate assembly, the replacement and the mounting of workers are facilitated, the calibration plate body cannot be damaged, and the calibration efficiency is improved. And the service life of the calibration plate body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration plates, in particular to a reciprocating calibration plate. Background Art

[0002] A calibration plate is a special tool used in applications such as machine vision, computer vision, and photogrammetry. Its main purpose is to provide known three-dimensional world coordinate points for a camera or other imaging device, so as to calibrate the internal parameters of the camera (such as focal length, principal point, distortion coefficient, etc.) and external parameters (such as rotation matrix, translation vector, etc.). A calibration plate is usually a flat plate with a carefully designed pattern printed on it, such as a checkerboard, a dot array, or a concentric circle array. The position of each feature point (such as the corner point of the checkerboard, the center of the dot in the dot array, etc.) in these patterns is known on the calibration plate and is usually accurately measured and recorded in a database.

[0003] However, existing calibration plates are usually fixed to the use location using a rack or tape. This installation method is not stable, has poor stability, affects the calibration result, and is relatively complex to install and fix, inconvenient to install, and easily damages the calibration plate during installation, affecting the service life of the calibration plate. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a reciprocating calibration plate, which has the advantages of stable installation of the calibration plate body, good stability, and simple installation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a reciprocating calibration plate, including a gantry, two first sliding grooves are opened on both sides of the inner wall of the gantry, two first sliders are slidably connected inside the two first sliding grooves, a cross bar is fixedly connected to one side of the two first sliders close to each other, and a transmission component is arranged inside the gantry to control the movement of the cross bar;

[0006] A reciprocating component is arranged inside the cross bar, the reciprocating component includes a second sliding groove opened on the side wall of the cross bar, a reciprocating lead screw rotatably connected to the side wall of the second sliding groove, and a second slider threadedly connected to the reciprocating lead screw. An installation plate component is arranged on the side wall of the second slider, and a calibration plate body is arranged on the installation plate component;

[0007] The installation plate component includes a fixing plate fixedly connected to the side wall of the second slider, two third sliding grooves opened on both sides of the fixing plate, and a sliding installation frame slidably connected to the two third sliding grooves. A fixed installation frame is fixedly connected to the bottom of the fixing plate.

[0008] As a further description of the above technical solution:

[0009] A second motor is fixedly connected to the side wall of the cross bar. A first gear is fixedly connected to the rotating shaft of the second motor. The first gear is meshed with a second gear. The second gear is fixedly sleeved at the end of a reciprocating lead screw. The second slider is slidably connected to a second chute.

[0010] As a further description of the above technical solution:

[0011] The transmission assembly includes a first servo motor fixedly connected to the middle of the top surface of the gantry, a rotating shaft fixedly connected to the rotating shaft of the first servo motor, and two first transmission wheels fixedly sleeved on the peripheral side of the bottom of the rotating shaft. The two first transmission wheels are connected by two transmission belts.

[0012] As a further description of the above technical solution:

[0013] Two lead screws are rotatably connected to the side walls of the two first chutes. The two lead screws are threadedly connected to two first sliders. Two second transmission wheels are fixedly connected to the tops of the two lead screws. The two second transmission wheels are connected by the two transmission belts.

[0014] As a further description of the above technical solution:

[0015] Two plug-in plates are fixedly connected to the top and bottom of the back of the calibration plate body. A jack is formed through the middle of the plug-in plate at the bottom. The two plug-in plates are slidably connected to a sliding mounting bracket and a fixed mounting bracket.

[0016] As a further description of the above technical solution:

[0017] A cylindrical groove is formed at the bottom of the fixing plate. A sliding rod is slidably connected to the cylindrical groove. The sliding rod passes through the fixed mounting bracket and is inserted into the jack.

[0018] As a further description of the above technical solution:

[0019] A circular ring piece is slidably connected inside the cylindrical groove. The circular ring piece is fixedly sleeved on the sliding rod. One end of a spring is fixedly connected to the side wall of the circular ring piece. The other end of the spring is fixedly connected to the cylindrical groove. The spring is movably sleeved on the sliding rod.

[0020] As a further description of the above technical solution:

[0021] A plurality of through holes are formed on both sides of the fixing plate. The through holes are communicated with a third chute. Two insertion rods are inserted into both sides of the sliding mounting bracket. The two insertion rods are inserted into two through holes at any parallel positions.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0023] 1. In the present utility model, the cooperation of the mounting plate assembly, the calibration plate body, the plug-in plate and the jack can stably mount the calibration plate body onto the fixing plate, with good stability, avoiding affecting the calibration result. Moreover, it is relatively simple to mount the calibration plate body onto the mounting plate assembly, facilitating the staff to replace and install it without damaging the calibration plate body, thereby increasing the service life of the calibration plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Fig. shows the overall structural schematic diagram provided by an embodiment of the present utility model;

[0025] Figure 2 Fig. shows the schematic diagram of the back cross-sectional structure provided by an embodiment of the present utility model;

[0026] Figure 3 Fig. shows the schematic diagram of the back structure of the calibration plate body provided by an embodiment of the present utility model;

[0027] Figure 4 Fig. shows the schematic diagram of the cross-sectional structure of the mounting plate assembly provided by an embodiment of the present utility model;

[0028] Figure 5 Fig. shows the Figure 4 enlarged structural schematic diagram at position A provided by an embodiment of the present utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. Gantry; 11. First chute; 12. First slider;

[0031] 2. Transmission assembly; 21. First servo motor; 22. Rotating shaft; 23. First transmission wheel; 24. Transmission belt; 25. Second transmission wheel; 26. Lead screw;

[0032] 3. Cross bar;

[0033] 4. Reciprocating assembly; 41. Second motor; 42. First gear; 43. Second gear; 44. Second chute; 45. Reciprocating lead screw; 46. Second slider;

[0034] 5. Mounting plate assembly; 51. Fixing plate; 52. Third chute; 53. Sliding mounting frame; 54. Fixed mounting frame; 55. Plug rod; 56. Through hole; 57. Sliding rod; 58. Cylindrical groove; 59. Spring; 510. Ring plate;

[0035] 6. Calibration plate body; 61. Plug-in plate; 62. Jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] Please refer to Figures 1-5 , the present utility model provides a technical solution: a reciprocating calibration plate, including a gantry 1. Two first chutes 11 are opened on both sides of the inner wall of the gantry 1. Two first sliders 12 are slidably connected inside the two first chutes 11. A cross bar 3 is fixedly connected to one side of the two first sliders 12 close to each other. A transmission component 2 is provided inside the gantry 1 for controlling the movement of the cross bar 3;

[0038] Among them, the gantry 1 can install the device at the use location. The transmission component 2 is used to control the up and down movement of the cross bar 3. The up and down of the cross bar 3 can adjust the up and down position of the calibration plate body 6, so as to perform tests at different heights. During use, the transmission component 2 drives the first slider 12 to move in the first chute 11, and the movement of the first slider 12 drives the cross bar 3 to move.

[0039] A reciprocating component 4 is provided inside the cross bar 3. The reciprocating component 4 includes a second chute 44 opened on the side wall of the cross bar 3, a reciprocating lead screw 45 rotatably connected to the side wall of the second chute 44, and a second slider 46 threadedly connected to the reciprocating lead screw 45. An installation plate component 5 is provided on the side wall of the second slider 46, and a calibration plate body 6 is arranged on the installation plate component 5;

[0040] Among them, when the calibration plate body 6 needs to reciprocate horizontally, the reciprocating component 4 is opened. The reciprocating component 4 drives the reciprocating lead screw 45 to rotate. The rotation of the reciprocating lead screw 45 drives the second slider 46 to reciprocate in the second chute 44, so as to realize the reciprocating movement of the calibration plate body 6. The installation plate component 5 can fix the calibration plate body 6.

[0041] The installation plate component 5 includes a fixing plate 51 fixedly connected to the side wall of the second slider 46, two third chutes 52 opened on both sides of the fixing plate 51, and a sliding installation frame 53 slidably connected to the two third chutes 52. A fixed installation frame 54 is fixedly connected to the bottom of the fixing plate 51;

[0042] Among them, the mounting plate assembly 5 can stably mount the calibration plate body 6, with good stability and simple operation. The installation can be completed by simply inserting the calibration plate body 6 into the sliding mounting frame 53 and the fixed mounting frame 54. At the same time, calibration plate bodies 6 of different sizes can be installed, and the position of the sliding mounting frame 53 can be adjusted according to the calibration plate body 6 of different sizes. Move the sliding mounting frame 53, and the sliding mounting frame 53 moves in the third chute 52. After moving to the appropriate position, the installation can be carried out.

[0043] Specifically, as Figure 2 shown, a second motor 41 is fixedly connected to the side wall of the cross bar 3. A first gear 42 is fixedly connected to the rotating shaft of the second motor 41. The first gear 42 is meshed with a second gear 43. The second gear 43 is fixedly sleeved on the end of the reciprocating lead screw 45. The second slider 46 is slidably connected to the second chute 44.

[0044] Among them, when the second motor 41 is turned on, the second motor 41 rotates to drive the first gear 42 to rotate. The first gear 42 rotates to drive the second gear 43 to rotate. The second gear 43 rotates to drive the reciprocating lead screw 45 to rotate.

[0045] Specifically, as Figure 2 shown, the transmission assembly 2 includes a first servo motor 21 fixedly connected to the middle of the top surface of the gantry 1, a rotating shaft 22 fixedly connected to the rotating shaft of the first servo motor 21, and two first transmission wheels 23 fixedly sleeved on the peripheral side of the bottom of the rotating shaft 22. The two first transmission wheels 23 are drivingly connected to two transmission belts 24.

[0046] Two screw rods 26 are rotatably connected to the side walls of the two first chutes 11. The two screw rods 26 are threadedly connected to two first sliders 12. Two second transmission wheels 25 are fixedly connected to the tops of the two screw rods 26. The two second transmission wheels 25 are drivingly connected to the two transmission belts 24.

[0047] Among them, when using the transmission assembly 2, turn on the first servo motor 21. The first servo motor 21 rotates to drive the rotating shaft 22 to rotate. The rotating shaft 22 rotates to drive the first transmission wheel 23 to rotate. The first transmission wheel 23 rotates to drive the transmission belt 24 to rotate. The transmission belt 24 drives the second transmission wheel 25 to rotate. The second transmission wheel 25 rotates to drive the screw rod 26 to rotate. The screw rod 26 rotates to drive the first slider 12 to move in the first chute 11.

[0048] Specifically, as Figures 3-5 shown, two plug-in plates 61 are fixedly connected to the top and bottom of the back surface of the calibration plate body 6. A jack 62 is formed through the middle of the plug-in plate 61 located at the bottom. The two plug-in plates 61 are slidably connected to the sliding mounting frame 53 and the fixed mounting frame 54.

[0049] A cylindrical groove 58 is formed at the bottom of the fixing plate 51. A sliding rod 57 is slidably connected to the cylindrical groove 58. The sliding rod 57 passes through the fixing mounting frame 54 and is inserted into the insertion hole 62. A circular ring piece 510 is slidably connected inside the cylindrical groove 58. The circular ring piece 510 is fixedly sleeved on the sliding rod 57. One end of a spring 59 is fixedly connected to the side wall of the circular ring piece 510, and the other end of the spring 59 is fixedly connected to the cylindrical groove 58. The spring 59 is movably sleeved on the sliding rod 57.

[0050] A plurality of through holes 56 are formed on both sides of the fixing plate 51. The through holes 56 communicate with the third sliding groove 52. Two insertion rods 55 are inserted on both sides of the sliding mounting frame 53. The two insertion rods 55 are inserted into two through holes 56 at any parallel positions.

[0051] Among them, during adjustment, the insertion rods 55 are pulled out from the sliding mounting frame 53 and the through holes 56. The sliding mounting frame 53 is moved. The sliding mounting frame 53 moves in the third sliding groove 52. After moving to a suitable position, the insertion rods 55 are inserted through the through holes 56 into the sliding mounting frame 53 to complete the fixation. The sliding rod 57 is pulled outwards. The movement of the sliding rod 57 drives the circular ring piece 510 to move. The cooperation between the circular ring piece 510 and the cylindrical groove 58 compresses the spring 59. When the sliding rod 57 enters the cylindrical groove 58, the insertion plate 61 on the back of the calibration plate body 6 is inserted into the middle of the sliding mounting frame 53 and the fixing mounting frame 54. The position of the insertion hole 62 corresponds to that of the sliding rod 57. The sliding rod 57 is released. The spring 59 uses its elastic force to restore the circular ring piece 510 to its original position. The sliding rod 57 restores its original position. The sliding rod 57 passes through the fixing mounting frame 54 and is inserted into the insertion hole 62, and the calibration plate body 6 is fixed to the fixing plate 51.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A reciprocating calibration plate, comprising a gantry (1), characterized in that: Two first slide grooves (11) are provided on both sides of the inner wall of the gantry (1), two first slide grooves (11) are slidably connected inside with two first sliders (12), and the two first sliders (12) are fixedly connected with a cross bar (3) on one side close to each other, and a transmission component (2) is provided inside the gantry (1) for controlling the movement of the cross bar (3); A reciprocating assembly (4) is provided inside the crossbar (3), and the reciprocating assembly (4) comprises a second slide groove (44) provided on the side wall of the crossbar (3), a reciprocating screw rod (45) rotatably connected to the side wall of the second slide groove (44), and a second slider (46) threadedly connected to the reciprocating screw rod (45), and a mounting plate assembly (5) is provided on the side wall of the second slider (46), and a calibration plate body (6) is provided on the mounting plate assembly (5); The mounting plate assembly (5) comprises a fixed plate (51) fixedly connected to the side wall of the second sliding block (46), two third sliding grooves (52) provided on both sides of the fixed plate (51), and a sliding mounting frame (53) slidably connected to the two third sliding grooves (52), and a fixed mounting frame (54) is fixedly connected to the bottom of the fixed plate (51).

2. A reciprocating calibration plate according to claim 1, characterized in that: The side wall of the cross bar (3) is fixedly connected to a second motor (41); the rotating shaft of the second motor (41) is fixedly connected to a first gear (42); the first gear (42) is meshingly connected to a second gear (43); the second gear (43) is fixedly sleeved on the end of a reciprocating screw rod (45); and the second slider (46) is slidably connected to a second slide groove (44).

3. A reciprocating calibration plate according to claim 1, characterized in that: The transmission assembly (2) comprises a first servo motor (21) fixedly connected to the middle of the top surface of the gantry (1), a rotating shaft (22) fixedly connected to the rotating shaft of the first servo motor (21), and two first transmission wheels (23) fixedly sleeved on the circumference of the bottom of the rotating shaft (22), the two first transmission wheels (23) being transmission-connected to two transmission belts (24).

4. A reciprocating calibration plate according to claim 3, characterized in that: The side walls of the two first slide grooves (11) are rotatably connected to two screw rods (26), the two screw rods (26) are threadedly connected to the two first sliders (12), the tops of the two screw rods (26) are fixedly connected to two second transmission wheels (25), and the two second transmission wheels (25) are transmission-connected to two transmission belts (24).

5. The reciprocating calibration plate according to claim 1, characterized in that: Two plug-in boards (61) are fixedly connected at the top and bottom of the back of the calibration board body (6), and a plug hole (62) is provided through the middle of the plug-in board (61) at the bottom. The two plug-in boards (61) are slidably connected to a sliding mounting frame (53) and a fixed mounting frame (54).

6. A reciprocating calibration plate according to claim 5, characterized in that: A cylindrical groove (58) is provided at the bottom of the fixing plate (51), and a sliding rod (57) is slidably connected to the cylindrical groove (58), and the sliding rod (57) passes through the fixing mounting frame (54) and is plugged into the plug hole (62).

7. A reciprocating calibration plate according to claim 6, characterized in that: A circular ring piece (510) is slidably connected inside the cylindrical groove (58), and the circular ring piece (510) is fixedly sleeved on the sliding rod (57). One end of a spring (59) is fixedly connected to the side wall of the circular ring piece (510), and the other end of the spring (59) is fixedly connected to the cylindrical groove (58), and the spring (59) is movably sleeved on the sliding rod (57).

8. The reciprocating calibration plate according to claim 7, characterized in that: A plurality of through holes (56) are provided on both sides of the fixing plate (51), and the through holes (56) are connected to the third sliding groove (52). Two insertion rods (55) are inserted on both sides of the sliding mounting frame (53), and the two insertion rods (55) are inserted into two through holes (56) at any parallel positions.

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