CN217434128U

CN217434128U - Camera centering clamping device capable of being adjusted quickly

Info

Publication number: CN217434128U
Application number: CN202220998717.XU
Authority: CN
Inventors: 张韬; 毛文龙
Original assignee: Hefei Eko Photoelectric Technology Co ltd
Current assignee: Hefei Eko Photoelectric Technology Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-16
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a camera centering clamping device capable of being rapidly adjusted, which comprises a base component, a fastening component and a clamping component for pushing the fastening component to move so as to fix a camera, wherein the fastening component is arranged on the base component in a sliding way, the base component comprises a bottom plate and a scale, and the scale is fixed on the side surface of the bottom plate and is arranged at a certain height higher than the upper surface of the bottom plate; the clamping assembly comprises a screw rod, a pressing block, a spring and a supporting plate fixed on the bottom plate, the spring is arranged in a groove body formed in the supporting plate, the pressing block is arranged in the groove body in a clearance fit mode and is abutted against one end of the spring, one end of the screw rod penetrates through the supporting plate and the pressing block to be arranged in an extending mode towards the position of the fastening assembly, and the screw rod and internal threads formed in the pressing block are separated and meshed to move through the stress of the pressing block; this to well clamping device uses the scale to provide a reference of alignment for the preceding terminal surface of camera, and the gesture when camera calibration is fixed, realizes the stable centering centre gripping of camera.

Description

Camera centering clamping device capable of being adjusted quickly

Technical Field

The utility model relates to a technical field is fixed to the camera, especially relates to a camera centering clamping device of quick adjustment.

Background

In image measurement processes and machine vision applications, in order to determine the correlation between the three-dimensional geometric position of a certain point on the surface of an object in space and the corresponding point in the image, a geometric model of camera imaging must be established, and the parameters of the geometric model are the parameters of the camera. Under most conditions, the parameters must be obtained through experiments and calculation, and the process of solving the parameters is called camera calibration (or video camera calibration). The camera calibration aims to obtain the internal reference coefficient pair and the external reference coefficient pair of the camera, and then correct the image shot by the camera to obtain an image with relatively small distortion.

The camera calibration holding device generally holds the camera by a clamping plate to keep the camera stable. The clamping plate is fixed on the frame of the device through the bolt, and the bolt is adjusted to enable the clamping plate to move, so that the clamping plate is controlled to clamp the camera. However, the bolt adjusting speed of the existing camera calibration clamping device is low, and the clamping efficiency is low; and after the camera is clamped and fixed every time, the position and the posture of the camera cannot be ensured to be consistent.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that the background art exists, the utility model provides a camera centering clamping device of quick adjustment has realized the stable centering centre gripping of camera.

The utility model provides a camera centering clamping device of quick adjustment, including base subassembly, fastening component and the centre gripping subassembly that is used for promoting the motion of fastening component in order to fix the camera, fastening component slides and sets up on the base subassembly, and the base subassembly includes bottom plate and scale, and the scale is fixed in the bottom plate side, and exceeds the setting of certain height of bottom plate upper surface; the centre gripping subassembly includes lead screw, briquetting, spring and is fixed in the backup pad on the bottom plate, and the spring sets up in the cell body that the backup pad was seted up, and briquetting clearance fit sets up in the cell body and with spring one end butt, and the one end of lead screw is passed backup pad, briquetting and is extended the setting to fastening assembly position, and through the briquetting atress, the internal thread separation meshing of seting up on lead screw and the briquetting moves.

Further, the fastening assembly and the clamping assembly form a set of centering assemblies, and the two centering assemblies are symmetrically arranged on the base assembly to center and clamp the camera.

Further, first round hole has been seted up to the backup pad, first round hole and cell body bottom intercommunication, and spring one end sets up in first round hole, the briquetting butt in the other end stretches out first round hole and cell body, has seted up the second round hole in the backup pad, and the second round hole runs through the cell body setting.

Furthermore, a waist-shaped hole is formed in the pressing block, the internal thread is formed in the lower surface of the waist-shaped hole, one end of the screw rod penetrates through the second round hole and the waist-shaped hole to be arranged in an extending mode, and the screw rod is in contact/separated meshing with the internal thread through the stress of the pressing block.

Further, the clamping assembly further comprises a ball head rocker, and the ball head rocker is in threaded connection with the end part of the screw rod far away from the fastening assembly.

Further, the base assembly further comprises a guide rail, a square groove is formed in the upper surface of the bottom plate, the guide rail is fixedly arranged in the square groove in an embedded mode, and the fastening assembly is arranged on the guide rail.

Furthermore, the scale marks of the scale are bilaterally symmetrical, and the middle scale mark of the scale is the initial 0 scale and extends towards two sides to form bilaterally symmetrical scales.

Further, fastening components include the slider and be fixed in the splint on the slider, and the slider slides and sets up on the guide rail, lead screw extension and splint butt.

The utility model provides a pair of camera centering clamping device of quick adjustment's advantage lies in: the utility model discloses a camera centering clamping device of quick adjustment that provides in the structure, fastening components and centre gripping subassembly form a set of centering subassembly, and two centering subassemblies symmetry set up on the base subassembly with centering centre gripping camera for camera both sides atress can be fixed with the gesture when the camera is calibrated, realize the stable centering centre gripping of camera, avoid taking place the slope in traditional camera is fixed and lead to camera sensor illumination inhomogeneous; the cooperation of the pressing block, the spring and the supporting plate is used for realizing the functions that the screw rod is locked and can only rotate to realize axial movement in the free state of the spring, and the screw rod is unlocked and can quickly move axially in the compressed state of the spring; the scale provides a reference for the front end face of the camera, and the scale marks on the scale provide accurate reference for the adjustment of the left and right positions of the camera, so that the function of unifying the positions of the camera is realized.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

the device comprises a base assembly, a fastening assembly, a clamping assembly, a base plate, a ruler, a guide rail, a sliding block, a clamping plate, a screw rod, a pressing block, a spring, a supporting plate, a ball head rocker, a square groove, a 321-internal thread, a 322-waist-shaped hole, a 341-groove body, a 342-first round hole and a 343-second round hole, wherein the base assembly is 1, the fastening assembly is 2, the clamping assembly is 3, the base plate is 11, the ruler is 12, the guide rail is 13, the sliding block is 21, the clamping plate is 22, the screw rod is 31, the pressing block is 32, the spring is 33, the supporting plate is 34, the ball head rocker is 35, the square groove is 111, the internal thread is 321, the waist-shaped hole is 322, the groove body is 341, the groove body is 342-first round hole, and the second round hole is 343.

Detailed Description

The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.

As shown in fig. 1 to 4, the utility model provides a camera centering clamping device of quick adjustment, including base subassembly 1, fastening component 2 and the clamping component 3 that is used for promoting the fastening component 2 motion in order to fix the camera, fastening component 2 slides and sets up on base subassembly 1, base subassembly 1 includes bottom plate 11 and scale 12, and scale 12 is fixed in the bottom plate 11 side, and exceeds the setting of bottom plate 11 upper surface certain height; the clamping assembly 3 comprises a screw rod 31, a pressing block 32, a spring 33 and a supporting plate 34 fixed on the bottom plate 11, the spring 33 is arranged in a groove body 341 formed in the supporting plate 34, the pressing block 32 is arranged in the groove body 341 in a clearance fit mode and is abutted to one end of the spring 33, one end of the screw rod 31 penetrates through the supporting plate 34 and the pressing block 32 and is arranged in a mode of extending towards the position of the fastening assembly 2, and through the stress of the pressing block 32, the screw rod 31 is separated from an internal thread 321 formed in the pressing block 32 and is meshed to move.

In a specific application, a base assembly 1, a fastening assembly 2, a clamping assembly 3, and a fixing plate may be provided, the fixing plate being disposed on the base assembly 1, and a space formed together with the fastening assembly 2 is used to clamp the camera, in which the camera is clamped by pushing one side of the camera. In another mode, the fastening component 2 and the clamping component 3 form a group of centering components, the two centering components are symmetrically arranged on the base component 1 to clamp the camera in a centering mode, in the mode, the two fastening components 2 can be slidably arranged on the base component 1, and the space formed by the two fastening components is used for clamping the camera, so that the two sides of the camera are stressed, the posture of the camera during calibration can be fixed, the centering clamping of the camera is realized, and the phenomenon that the illumination of a camera sensor is uneven due to the fact that the traditional camera is inclined in the fixing process is avoided.

Use briquetting 32, two kinds of motion modes are realized in the cooperation of spring 33 and backup pad 34, one kind is under spring 33 free state, lead screw 31 is locked and can only realize axial displacement through the screw thread rotation, can be used for the tight fixed of clamp after lead screw 31 and fastening component 2 butt this moment, another kind is for pressing briquetting 32, make spring 33 atress, but spring 33 removes the function of locking quick axial displacement under compression state lead screw 31, can be used for lead screw 31 quick movement to fastening component 2 one side this moment, adjust time when having reduced the correction, and the production efficiency is improved.

When the screw rod 31 is in threaded connection with the internal thread 321 for rotating movement, in order to facilitate the rotation of the screw rod 31, a ball head rocker 35 is arranged at one end of the screw rod 31, and the ball head rocker 35 is in threaded connection with the end part of the screw rod 31 far away from the fastening assembly 2, so that the ball head rocker 35 can be conveniently assembled and disassembled.

Specifically, first round hole 342 is seted up to backup pad 34, and first round hole 342 communicates with cell body 341 bottom, and spring 33 one end sets up in first round hole 342, and the other end stretches out behind first round hole 342 certain length and the briquetting 32 butt in cell body 341, and spring 33 is scalable, has seted up second round hole 343 on the backup pad 34, and second round hole 343 runs through the cell body 341 setting. As an embodiment, the groove depth of the groove body 341 is 25mm, the middle of the bottom of the groove body is provided with a first round hole 342 with the diameter of 7mm and the depth of 6mm, a second round hole 343 with the diameter of 12.5mm penetrates through the groove body 341 from the right side, the bottom surface of the supporting plate 34 is provided with a threaded hole, and the supporting plate is matched with a counter bore on the lower surface of the bottom plate 11 through a screw and is arranged on the upper surface of the bottom plate 11.

Specifically, a kidney-shaped hole 322 is formed in the pressing block 32, an internal thread 321 is formed in the lower surface of the kidney-shaped hole 322, one end of the screw rod 31 penetrates through the second round hole 343 and the kidney-shaped hole 322 to be arranged in an extending mode, the screw rod 31 is in contact/separated meshing with the internal thread 321 through the stress of the pressing block 32, the size of the pressing block 32 is slightly smaller than that of the groove body 341 in the supporting plate 34 so as to be plugged into the groove body 341, the bottom surface of the pressing block 32 is in contact with the spring 33, and the half threaded hole can be aligned to the through hole in the side surface of the supporting plate 34 through pressing the compression spring 33.

The pressing block 32 is slightly smaller than the groove in the supporting plate 34 so as to be inserted into the groove, and the bottom surface of the pressing block is in contact with the spring 33, so that the waist-shaped hole 322 where the internal thread 321 is located can be aligned with the second round hole 343 on the side of the supporting plate 34 by pressing the compression spring 33.

In this embodiment, base subassembly 1 includes bottom plate 11, scale 12 and guide rail 13, and backup pad 34 is fixed in on bottom plate 11, and square groove 111 has been seted up to bottom plate 11 upper surface, and fixed the setting in guide rail 13 embedding square groove 111, and fastening component 2 sets up on guide rail 13, and scale 12 is fixed in bottom plate 11 side and exceeds the setting of bottom plate 11 upper surface take the altitude, base subassembly 1 includes bottom plate 11, scale 12 and guide rail 13, and backup pad 34 is fixed in on bottom plate 11, and square groove 111 has been seted up to bottom plate 11 upper surface, and guide rail 13 embedding square groove 111 is fixed the setting, and fastening component 2 sets up on guide rail 13, and scale 12 is fixed in bottom plate 11 leading flank, and exceeds the setting of bottom plate 11 upper surface take the altitude.

After the posture of putting of camera was unified among traditional camera mounting fixture, the camera is still not unified for the position of anchor clamps, relies on the adjustment of eyes visual, can not accurate quantization, and this embodiment adopts scale 12 to come to provide an alignment benchmark for the camera, realizes that the camera position is unified.

It can be understood that the bottom plate 11 is used for mounting other structural members thereon, the front end surface of the bottom plate 11 is provided with a row of threaded holes at equal intervals, and the front side and the rear side of the upper surface are respectively provided with a row of countersunk holes for mounting the clamp on an instrument. In the concrete application, scale 12 can be fixed in 11 leading flanks of bottom plate, and do not exclude to set up in other fixed modes that can realize demarcation such as trailing flanks, scale 12's one side is carved with the scale mark and is opened there is the counter sink, the scale mark bilateral symmetry, the scale intermediate line is originated 0 scale, extend interval 10mm to both sides and increase 1 scale in proper order and form a scale 12 of bilateral symmetry scale, scale 12 installs on 11 preceding terminal surfaces of bottom plate through the screw hole of counter sink and 11 preceding terminal surfaces of bottom plate, 12 upper end faces of installation back scale are higher than 11 about 2mm of bottom plate, use scale 12 can provide an alignment benchmark for the preceding terminal surface of camera, the scale of scale 12 provides accurate reference for the adjustment of camera left and right positions simultaneously, realize the unified function in camera position.

In this embodiment, the fastening assembly 2 includes the slider 21 and is fixed in the splint 22 on the slider 21, and the relative two faces of splint 22 are smooth, and the material that has high coefficient of friction is pasted on the surface, is convenient for press from both sides tight fixed to the camera, and slider 21 slides and sets up on guide rail 13, and the extension of lead screw 31 and splint 22 butt.

The working process is as follows: the camera is placed in the clamping space formed by the two fastening components 2 during calibration, the front end face of the camera is tightly attached to the back face of the scale 12 (namely the part of the scale 12 protruding out of the bottom plate 11) so as to realize that the front and back positions of the multiple cameras in the clamping device during calibration are strictly the same, meanwhile, the left and right positions of the cameras are adjusted by taking the scale marks as references so that the cameras are in the middle position or the designated position of the clamping device (if the width of the camera is A, the edge of the camera is aligned with A/2 when the camera is in the middle), the pressing block 32 is pressed, the spring 33 is in the compressed state, the matching of the screw rod 31 and the internal thread 321 is released, the screw rod 31 can axially move along the second round hole 343 of the supporting plate 34, the screw rod 31 is respectively pushed to push the clamping plate 22 to the side position of the camera, then the pressing block 32 is released so that the screw rod 31 is locked by the pressing block 32, the ball rocker 35 is rotated so that the screw rod 31 further pushes the clamping plate 22 from two sides so as to clamp the camera, the positions and postures corrected by the plurality of cameras can be unified.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The camera centering clamping device capable of being adjusted quickly is characterized by comprising a base assembly (1), a fastening assembly (2) and a clamping assembly (3) used for pushing the fastening assembly (2) to move so as to fix a camera, wherein the fastening assembly (2) is arranged on the base assembly (1) in a sliding mode, the base assembly (1) comprises a bottom plate (11) and a scale (12), and the scale (12) is fixed on the side face of the bottom plate (11) and is higher than the upper surface of the bottom plate (11) by a certain height;

centre gripping subassembly (3) include lead screw (31), briquetting (32), spring (33) and be fixed in backup pad (34) on bottom plate (11), spring (33) set up in cell body (341) that backup pad (34) were seted up, briquetting (32) clearance fit sets up in cell body (341), and with spring (33) one end butt, backup pad (34) are passed to the one end of lead screw (31), briquetting (32) are to fastening components (2) position extension setting, through briquetting (32) atress, internal thread (321) separation meshing that sets up on lead screw (31) and briquetting (32) move.

2. The fast adjusting camera centering clamping device according to claim 1, wherein the fastening component (2) and the clamping component (3) form a set of centering components, and the two centering components are symmetrically arranged on the base component (1) to center and clamp the camera.

3. The camera centering clamping device capable of being rapidly adjusted according to claim 1, wherein a first round hole (342) is formed in the supporting plate (34), the first round hole (342) is communicated with the bottom of the groove body (341), one end of the spring (33) is arranged in the first round hole (342), the other end of the spring extends out of the first round hole (342) to be abutted to a pressing block (32) in the groove body (341), a second round hole (343) is formed in the supporting plate (34), and the second round hole (343) penetrates through the groove body (341).

4. The fast-adjusting camera centering and clamping device as claimed in claim 3, wherein the pressing block (32) is provided with a waist-shaped hole (322), the internal thread (321) is provided on the lower surface of the waist-shaped hole (322), one end of the screw rod (31) passes through the second round hole (343) and the waist-shaped hole (322) and is arranged in an extending manner, and the screw rod (31) is in contact/separated meshing engagement with the internal thread (321) by the stress of the pressing block (32).

5. The fast adjusting camera centering clamping device according to claim 1, wherein the clamping assembly (3) further comprises a ball-head rocker (35), the ball-head rocker (35) being in threaded connection with an end of the screw rod (31) remote from the fastening assembly (2).

6. The fast-adjusting camera centering clamping device according to claim 1, wherein the base assembly (1) further comprises a guide rail (13), a square groove (111) is formed in the upper surface of the bottom plate (11), the guide rail (13) is embedded in the square groove (111) and fixedly arranged, and the fastening assembly (2) is arranged on the guide rail (13).

7. The fast adjusting camera centering clamping device of claim 6, wherein the graduation lines of the staff gauge (12) are symmetrical left and right, the middle graduation line is the initial 0 graduation, and the graduation lines extend towards the two sides to form symmetrical scales left and right.

8. A fast adjusting camera centering clamping device as claimed in claim 6, characterized in that the fastening assembly (2) comprises a slide (21) and a clamping plate (22) fixed on the slide (21), the slide (21) is slidably arranged on the guide rail (13), and the screw rod (31) is extended to abut against the clamping plate (22).