CN112763191B - Letter detection system and switching device thereof - Google Patents
Letter detection system and switching device thereof Download PDFInfo
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- CN112763191B CN112763191B CN202011579532.7A CN202011579532A CN112763191B CN 112763191 B CN112763191 B CN 112763191B CN 202011579532 A CN202011579532 A CN 202011579532A CN 112763191 B CN112763191 B CN 112763191B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0292—Testing optical properties of objectives by measuring the optical modulation transfer function
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/04—Optical benches therefor
Abstract
The invention relates to a transfer letter detection system and a transfer device thereof, wherein the transfer device is suitable for being installed on a transfer letter detector and comprises a base assembly, a height adjusting mechanism and a transfer plate for bearing load, wherein the base assembly comprises a bottom plate, a top plate and a first universal ball assembly arranged between the bottom plate and the top plate; the height adjusting mechanism comprises an adjusting base connected to the top plate, a rotating disc rotatably connected to the adjusting base, a bearing plate arranged on the rotating disc and a second universal ball assembly arranged between the rotating disc and the bearing plate; when the load swings or rotates on the adapter plate, the acting force or the acting moment transmitted to the transfer function detector when the load swings or rotates can be reduced through the rolling friction between the first universal ball assembly and the top plate and the rolling friction between the second universal ball assembly and the bearing plate, so that the detection requirement is met.
Description
Technical Field
The invention relates to the technical field of aerial camera lens transfer function detection, in particular to a transfer function detection system and a switching device thereof.
Background
The transfer function of the aerial camera lens is of great importance to the imaging quality of the camera, so that the transfer function detection of the aerial camera lens is required to be carried out in the production stage of the aerial camera so as to ensure that the design requirement is met. However, the aerial camera lens generally has the characteristics of long focal length and large caliber, namely, the aerial camera lens has the characteristics of large volume and heavy weight in structure, so that the corresponding transfer function detection equipment needs to have higher bearing capacity, and the aerial camera lens can be accurately and reliably detected. In addition, when the transfer function detection is performed on the aerial camera lens, the transfer function detection device needs to rotate a corresponding angle according to the designed field angle of the lens so as to measure the transfer function at all angles within the designed field range. That is to say, the existing transfer function detecting device should not only have a carrying capacity capable of carrying the weight of the aerial camera lens itself, but also have a capacity capable of bearing the action of the acting force or the acting moment transmitted when the aerial camera lens swings or rotates, so as to meet the demand of transfer function detection. However, the slide rail of the existing transfer function detection equipment has limited bearing capacity, and is difficult to meet the transfer function detection requirement of the aerial camera lens with large volume and heavy weight.
Disclosure of Invention
The invention aims to provide a transfer function detection system and a transfer device thereof, wherein the transfer device can effectively reduce the acting force or moment on a transfer function detector when a load swings or rotates, is favorable for improving the bearing capacity of the transfer function detection system so as to meet the detection requirement, and solves the problem that the transfer function of a large-scale aerial camera lens is difficult to detect in the prior art.
The invention provides a switching device which is suitable for being installed on a transfer function detector and used for reducing acting force or acting moment transmitted to the transfer function detector when a load swings or rotates, and the switching device comprises:
the base assembly comprises a bottom plate, a first universal ball assembly arranged on the bottom plate and a top plate supported on the first universal ball assembly;
the height adjusting mechanism comprises an adjusting base connected to the top plate, a rotating disc rotatably arranged on the adjusting base, a second universal ball assembly arranged on the rotating disc, and a bearing plate supported on the second universal ball assembly; and
the adapter plate is arranged on the bearing plate and used for bearing the load, and when the load swings or rotates on the adapter plate, the acting force or the acting moment transmitted to the transfer function detector when the load swings or rotates can be reduced through the rolling friction between the first universal ball assembly and the top plate and the rolling friction between the second universal ball assembly and the bearing plate.
In an embodiment of the present invention, the first universal ball assembly includes a plurality of universal balls, each of which is composed of a cover shell and a ball, and the ball is embedded in the cover shell with a gap to form a ball pair so that the ball can rotate in any direction in the cover shell to reduce friction.
In an embodiment of the present invention, the covering shell of the ball gimbal is a cylindrical structure, the bottom plate is provided with a plurality of cylindrical grooves, and each ball gimbal is mounted in the corresponding cylindrical groove by forming a clearance fit through the covering shell of the cylindrical structure and the cylindrical groove of the bottom plate.
In an embodiment of the invention, the base assembly further includes a plurality of limiting blocks, the limiting blocks are respectively disposed at an edge portion of the bottom plate, and the plurality of limiting blocks restrict a sliding range of the top plate on the first universal ball assembly, so as to prevent the top plate from falling over when sliding.
In an embodiment of the present invention, one or more of the plurality of limiting blocks is provided with an adjusting screw, which is used to adjust and constrain the position of the top plate according to a swing range required by the letter detector during detection.
In an embodiment of the present invention, the second ball transfer assembly includes a plurality of ball transfer units, each of which is composed of a cover and a ball, and the ball is embedded in the cover with a gap to form a ball pair such that the ball can rotate in any direction in the cover to reduce friction.
In an embodiment of the present invention, the covering shell of the universal ball is a cylindrical structure, the rotating disk is provided with a plurality of cylindrical grooves, and each universal ball is mounted in the corresponding cylindrical groove by forming a clearance fit through the covering shell of the cylindrical structure and the cylindrical groove of the rotating disk.
In an embodiment of the present invention, the height adjusting mechanism further includes a connecting assembly, and the rotating disc is rotatably connected to the adjusting base via the connecting assembly.
In an embodiment of the present invention, the connecting assembly includes a bushing and a T-shaped screw, the bushing is fixedly connected to the adjusting base by a screw, and an inner wall of the bushing is provided with a thread, the T-shaped screw is fixedly installed in a bottom circular groove of the rotating disc by a screw, and an outer wall of the T-shaped screw is provided with a thread adapted to the bushing, and the T-shaped screw is in threaded connection with the bushing to form a state that the rotating disc is rotatably connected to the adjusting base.
In an embodiment of the present invention, the rotating disk is provided with force applying holes at intervals along a circumferential direction thereof, the force applying holes being adapted to be inserted into a force applying rod so that the rotating disk can be rotated via the force applying rod.
In an embodiment of the invention, a receiving groove is disposed at a top of the rotating disc, the second ball-and-socket assembly is disposed in the receiving groove, the bearing plate is supported on the second ball-and-socket assembly, and a diameter of the bearing plate is smaller than a diameter of the receiving groove, and when the bearing plate is supported on the second ball-and-socket assembly, an upper surface of the bearing plate is higher than an upper surface of the rotating disc and a lower surface of the bearing plate is lower than the upper surface of the rotating disc, so that a sliding motion of the bearing plate on the second ball-and-socket assembly is restricted by the rotating disc.
In an embodiment of the present invention, the adapter further includes a prism mounting seat, the prism mounting seat is adapted to be mounted on a slide rail of the letter detector, and includes a protective bottom plate, two vertical plates symmetrically and fixedly connected to two sides of the protective bottom plate, and a placing plate having two ends respectively connected to the two vertical plates, and a side surface of the placing plate is provided with a mechanical interface for connecting a prism assembly.
In an embodiment of the present invention, the prism mounting base further includes a locking screw, and the locking screw is disposed on the protective base plate and used for locking the prism mounting base to a slide rail of the transmission detector.
The invention also provides a transfer function detection system, which comprises an air floatation platform, a transfer function detector light source, a reflector and the switching device, wherein the transfer function detector, the transfer function detector light source, the reflector and the switching device are respectively arranged on the air floatation platform, and the switching device is arranged on the transfer function detector and is used for reducing the acting force or the acting moment transmitted to the transfer function detector when the load swings or rotates.
In an embodiment of the present invention, the transfer function detecting system further includes a data processing module communicably connected to the transfer function detector.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the adapter device comprises a first universal ball component arranged between the bottom plate and the top plate and a second universal ball component arranged between the rotating disc and the bearing plate, and when a load is placed on the adapter plate, the rolling friction between the top plate and the first universal ball component can effectively reduce the acting force transmitted to a slide rail of the transfer function detector when the load swings; when the height of the load needs to be adjusted and the rotating disc is rotated, the rolling friction between the bearing plate and the universal ball of the second universal ball component can effectively reduce the action torque transmitted to the sliding rail of the transfer function detector, so that when the transfer function detector swings or rotates a large-scale aerial camera lens in different detection fields, the switching device can effectively reduce the action force or the action torque transmitted to the transfer function detector by the large-scale aerial camera lens, and the application range of the transfer function detector can be expanded and the detection cost can be reduced. In addition, the switching device can be matched with the existing transfer function detector for use, the existing transfer function detector does not need to be modified, and the switching device is convenient to use and wide in applicability.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
Drawings
Fig. 1 is a schematic structural diagram of the letter detection system according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the adapter device according to the above preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the base assembly of the adapter device according to the above preferred embodiment of the present invention.
Fig. 4 is a partial structural cross-sectional view of the base assembly of the adapter device according to the above preferred embodiment of the present invention.
Fig. 5 is a schematic structural view of the height adjusting mechanism of the adapter according to the above preferred embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the prism mounting seat of the adapter according to the above preferred embodiment of the present invention.
The reference numbers illustrate: a letter detection system 100; a switching device 1; a base assembly 10; a base plate 11; a stopper 111; an adjustment screw 112; a top plate 13; a first universal ball assembly 12; a height adjusting mechanism 20; an adjustment base 21; a rotating disk 22; the accommodating groove 221; a bottom circular groove 222; a second gimbal ball assembly 23; a bearing plate 24; a connecting assembly 25; a bushing 251; a T-shaped screw 252; an interposer 30; a prism mount 40; a protective bottom plate 41; a vertical plate 42; a long waist hole 421; a placement plate 43; a locking screw 44; a transfer function detector 2; a slide rail 3; an air floating platform 4; a light source 5 of a transfer function detector; a reflector 6; a data processing module 7; an aerial camera lens 8.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above terms should not be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 6, the detailed structure of the letter detection system 100 and the adaptor 1 thereof according to a preferred embodiment of the present invention is illustrated. As shown in fig. 1 and 2, the adapter device 1 is adapted to be mounted on a letter detector 2, and is used for reducing the acting force or moment transmitted to the letter detector 2 when a load swings or rotates, and comprises a base assembly 10, a height adjusting mechanism 20 arranged on the base assembly 10, and an adapter plate 30 arranged on the height adjusting mechanism 20, wherein the base assembly 10 comprises a bottom plate 11, a top plate 13, and a first universal ball assembly 12 arranged between the bottom plate 11 and the top plate 13; the height adjusting mechanism 20 comprises an adjusting base 21 connected to the top plate 13, a rotating disc 22 rotatably connected to the adjusting base 21, a bearing plate 24 arranged on the rotating disc 22, and a second universal ball assembly 23 arranged between the rotating disc 22 and the bearing plate 24; the adapter plate 30 is arranged on the bearing plate 24 and is used for bearing the load, and when the load swings or rotates on the adapter plate 30, the acting force or the acting moment transmitted to the transfer function detector 2 during swinging or rotating of the load can be reduced through the rolling friction between the first universal ball assembly 12 and the top plate 13 and the rolling friction between the second universal ball assembly 23 and the bearing plate 24, so that the bearing capacity of the transfer function detector 2 can be improved, and the detection requirement can be met.
It should be noted that, as shown in fig. 2, one end of the adapter plate 30 is disposed on the slide rail 3 of the transfer function detector 2, the other end of the adapter plate 30 is supported by the height adjusting mechanism 20, when the load is placed on the adapter plate 30, the force of the load is transmitted to the letter detector 2 via the adapter plate 30, the height adjustment mechanism 20 and the base assembly 10, and thus, since the base assembly 10 is provided with the first universal ball assembly 12, the height adjusting mechanism 20 is provided with the second universal ball assembly 23, when the load swings or rotates on the adapter plate 30, the rolling friction between the first universal ball assembly 12 and the top plate 13 and the rolling friction between the second universal ball assembly 23 and the bearing plate 24 can reduce the acting force or moment transmitted to the transfer function detector 2 when the load swings or rotates.
Specifically, as shown in fig. 3, the first universal ball assembly 12 includes a plurality of universal balls each composed of a cover shell and a ball inserted with a gap in the cover shell to form a ball pair such that the ball can rotate in any direction in the cover shell to reduce friction.
That is to say, the top plate 13 is in rolling contact with the balls of the universal ball, so that when the top plate 13 is acted by an acting force, the rolling friction between the top plate 13 and the balls of the universal ball can reduce the acting force transmitted to the slide rail 3 of the transfer function detector 2 through the base assembly 10, which is beneficial to improving the bearing capacity of the transfer function detector 2 and widening the application range of the transfer function detector 2.
It is worth mentioning that the ball bearings can rotate in any direction in the coating shell to reduce friction, and in the practical application process, the universal ball is coated with lubricating oil for maintenance. The load range of the universal ball is 25-220kg, and the specific load is determined by the material and the size of the ball of the universal ball.
Further, the covering shell of the universal ball is a cylindrical structure, the bottom plate 11 is provided with a plurality of cylindrical grooves, and each universal ball is mounted in the corresponding cylindrical groove by forming clearance fit between the covering shell of the cylindrical structure and the cylindrical groove of the bottom plate 11.
It should be noted that, as shown in fig. 4, the base assembly 10 further includes a plurality of stoppers 111, the stoppers 111 are respectively disposed at the edge portion of the bottom plate 11, and the plurality of stoppers 111 restrict a sliding range of the top plate 13 on the first universal ball assembly 12 to prevent the top plate 13 from falling over when sliding.
It can be understood that the top plate 13 directly contacts with the ball joint of the first ball joint assembly 12, so that the stoppers 111 are located at the peripheral edge of the bottom plate 11, so that the top plate 13 can only slide in the area limited by the stoppers 111, and the top plate 13 can be prevented from falling over when sliding.
In addition, it is worth mentioning that one or more of the limit blocks 111 are provided with an adjusting screw 112 for adjusting and restricting the position of the top plate 13 according to the swing range required by the letter detector 2 during detection. That is, when the top plate 13 swings to a desired range, the position of the top plate 13 may be locked by rotating the adjustment screw 112.
Specifically, in this preferred embodiment of the present invention, the plurality of limit blocks 111 includes an upper limit block, a lower limit block, a left limit block, and a right limit block, wherein the left limit block and the right limit block are provided with the adjusting screw 112. In some embodiments of the present invention, the adjusting screw 112 may also be disposed on the upper limiting block and the lower limiting block, which is not limited by the present invention.
It should also be understood that the orientation descriptions of "up", "down", "left" and "right" in the present invention are merely illustrative of the orientation of the relative relationship between the plurality of the stoppers 111, and should not be construed as limiting the arrangement positions of the plurality of the stoppers 111 in the present invention.
Further, as shown in fig. 5, the second ball transfer unit 23 includes a plurality of ball transfer balls each composed of a cover and balls that are interstitially embedded in the cover to form a ball pair such that the balls can rotate in any direction in the cover to reduce friction.
It is worth mentioning that the covering shell of the universal ball is a cylindrical structure, the rotating disc 22 is provided with a plurality of cylindrical grooves, and each universal ball is mounted in the corresponding cylindrical groove by forming clearance fit between the covering shell of the cylindrical structure and the cylindrical groove of the rotating disc 22.
It will be appreciated that the structure of the second ball gimbal assembly 23 is the same as the structure of the first ball gimbal assembly 12.
Specifically, the top of the rotating disc 22 is provided with a receiving groove 221, the second ball-and-socket assembly 23 is disposed in the receiving groove 221, the bearing plate 24 is supported on the second ball-and-socket assembly and the diameter of the bearing plate 24 is smaller than that of the receiving groove 221, and when the bearing plate 24 is supported on the second ball-and-socket assembly, the upper surface of the bearing plate 24 is higher than the upper surface of the rotating disc 22 and the lower surface of the bearing plate 24 is lower than the upper surface of the rotating disc 22, so that the sliding motion of the bearing plate 24 on the second ball-and-socket assembly 23 is restricted by the rotating disc 22.
Further, the height adjusting mechanism 20 further includes a connecting assembly 25, and the rotating disc 22 is rotatably connected to the adjusting base 21 via the connecting assembly 25.
Specifically, the connecting assembly 25 includes a bushing 251 and a T-shaped screw 252, the bushing 251 is fixedly connected to the adjusting base 21 by a screw and an inner wall thereof is provided with a thread, a bottom circular groove 222 adapted to the T-shaped screw 252 is provided at a bottom of the rotary plate 22, the T-shaped screw 252 is fixedly installed in the bottom circular groove 222 by a screw and an outer wall thereof is provided with a thread adapted to the bushing 251, and the T-shaped screw 252 is threadedly connected to the bushing 251 to form a state in which the rotary plate 22 is rotatably connected to the adjusting base 21.
It can be understood that the T-shaped screw 252 is screwed to the bushing 251, the bushing 251 is fixedly connected to the adjusting base 21, and the rotating disc 22 is fixedly connected to the T-shaped screw 252, so that by rotating the T-shaped screw 252, the height of the rotating disc 22 relative to the adjusting base 21 can be adjusted, and thus the height of the bearing plate 24 and the adaptor plate 30 supported on the rotating disc 22 relative to the adjusting base 21 can be adjusted, so that when a load is placed on the adaptor plate 30, the height of the load relative to the slide rail 3 of the transmissibility detector 2 can be adjusted by rotating the T-shaped screw 252, so as to meet the requirement of transmissibility detection.
It is worth mentioning that the rotary disc 22 is provided with force applying holes at intervals along the circumferential direction thereof, the force applying holes being adapted to be inserted into a force applying rod so that the rotary disc 22 can be rotated via the force applying rod.
In addition, it is worth mentioning that the bushing 251 and the T-shaped screw 252 may be made of wear-resistant stainless steel material, and the material of the bushing 251 and the T-shaped screw 252 is not limited by the invention.
In some embodiments of the present invention, the rotating disc 22 is a T-shaped structure and has threads on its outer wall, the adjusting base 21 has threads on its inner wall, and the rotating disc 22 is directly connected to the adjusting base 21 in a rotatable manner, that is, the rotating disc 22 and the adjusting base 21 are connected in a rotatable manner.
It should be noted that the adjusting base 21 of the height adjusting mechanism 20 can be fixedly connected to the top plate 13 of the base assembly 10 by means of a snap fit, a screw connection, or the like, so that the height adjusting mechanism 20 can slide on the first universal ball assembly 12 along with the top plate 13.
Further, as shown in fig. 6, the adapter 1 further includes a prism mounting seat 40, the prism mounting seat 40 is adapted to be mounted on the slide rail 3 of the letter detector 2, and includes a protective bottom plate 41, two vertical plates 42 symmetrically and fixedly connected to two sides of the protective bottom plate 41, and a placing plate 43 having two ends respectively connected to the two vertical plates 42, and a side surface of the placing plate 43 is provided with a mechanical interface for connecting a prism assembly.
It should be mentioned that the two vertical plates 42 are provided with corresponding long waist holes 421, and two ends of the placing plate 43 are disposed in the corresponding long waist holes 421 to form a state that two ends of the placing plate 43 are respectively fixedly connected to the corresponding vertical plates 42.
Furthermore, the prism mounting base 40 further includes a locking screw 44, and the locking screw 44 is disposed on the protection base plate 41 and is used for locking the prism mounting base 40 to the slide rail 3 of the letter detector 2.
That is to say, the prism mount 40 is detachably disposed on the slide rail 3 of the letter detector 2, and the prism mount 40 can be disposed according to a desired optical system, the mechanical interface of the prism mount 40 is adapted to a desired aerial camera prism assembly, that is, the structure of the prism mount 40 is disposed corresponding to the structure of the load, so that the adapting device 1 can meet the requirements of letter detection of different types of loads by replacing different types of prism mounts 40.
It should be noted that the protection base plate 41 and the locking screw 44 of the prism mounting seat 40 may be made of a polyamide material with a relatively soft hardness, and the material of the protection base plate 41 and the locking screw 44 is not limited in the present invention.
It is understood that the load can be various types of camera lenses, that is, the adapting device 1 of the present invention is suitable for the transfer function detection of various types of camera lenses, and is particularly suitable for the transfer function detection of large aerial camera lenses, and in this preferred embodiment of the present invention, the specific structures of the transfer function detection system 100 and the adapting device 1 are specifically described by taking the transfer function detection of the adapting device 1 used for large aerial camera lenses as an example.
It can be further understood that, as shown in fig. 1, in another aspect, the present invention further provides a transfer function detection system 100, which includes an air floating platform 4, and a transfer function detector 2, a transfer function detector light source 5, a reflecting mirror 6 and the adapter 1 respectively disposed on the air floating platform 4, where the adapter 1 is mounted on the transfer function detector 2, and is configured to reduce an acting force or an acting moment on the transfer function detector 2 when a load swings or rotates.
It should be noted that the transfer function detection system 100 further includes a data processing module 7 communicably connected to the transfer function detector 2, and the data processing module 7 is a computer.
As shown in fig. 1 to 6, the method for detecting the transfer function of the aerial camera lens 8 by the transfer function detection system 100 includes: firstly, the base assembly 10 is placed on a proper position of the air floating platform 4; secondly, the adjusting base 21 of the height adjusting mechanism 20 is fixedly connected with the top plate 13 of the base assembly 10 by screws, i.e. the height adjusting mechanism 20 is fixed on the top plate 13, so that the height adjusting mechanism 20 can slide on the first universal ball assembly 12 together with the top plate 13, and the sliding range is limited by the plurality of limiting blocks of the bottom plate 11; then, one end of the adapter plate 30 is placed on the bearing plate 24 of the height adjusting mechanism 20, the other end of the adapter plate is fixedly connected with a pulley on the slide rail 3 of the transfer function detector 2 through a screw, and the pulley is locked through a self-locking mechanism; thirdly, placing the detected aerial camera lens 8 on the adapter plate 30, turning on the light source 5 of the transfer function detector, reflecting the light of the transfer function detector 2 by the reflector 6, entering the aerial camera lens 8 and then reaching the probe of the transfer function detector 2; at this time, a stress application rod is inserted into the stress application hole of the rotating disc 22, the rotating disc 22 is rotated through the stress application rod to adjust the height of the aerial camera lens 8, and meanwhile, the side face of the aerial camera lens 8 is knocked by a rubber hammer to adjust the direction of the aerial camera lens 8, so that the incident light of the aerial camera lens 8 is parallel to the optical axis of the aerial camera lens; furthermore, a prism assembly is mounted on the prism mounting seat 40, the prism mounting seat 40 is placed at a proper position of the slide rail 3 of the letter detector 2, and the prism mounting seat 40 is locked to the slide rail 3 of the letter detector 2 through the locking screw 44; and finally, the prism mounting seat 40 and the aerial camera lens 8 are driven to rotate by different angles through a rotary table of the transfer function detector 2 to carry out transfer function measurement, and the measurement information is finally output by the data processing module 7.
In summary, the adapting device 1 of the present invention can effectively reduce the acting force or moment transmitted to the transfer function detector 2 by the large aerial camera lens 8 swinging or rotating during transfer function detection, so as to widen the application range of the transfer function detector 2 and reduce the detection cost. In addition, the switching device 1 can be matched with the existing transfer function detector 2 for use, the existing transfer function detector 2 does not need to be modified, and the switching device is convenient to use and wide in applicability.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A switching device is suitable for installing on the letter detector for reduce load swing or transmit to when rotating the effort or the effect moment of letter detector, its characterized in that includes:
the base assembly comprises a bottom plate, a first universal ball assembly arranged on the bottom plate and a top plate supported on the first universal ball assembly;
the height adjusting mechanism comprises an adjusting base connected to the top plate, a rotating disc rotatably arranged on the adjusting base, a second universal ball assembly arranged on the rotating disc, and a bearing plate supported on the second universal ball assembly; and
the adapter plate is arranged on the bearing plate and used for bearing the load, and when the load swings or rotates on the adapter plate, the acting force or the acting moment transmitted to the transfer function detector when the load swings or rotates can be reduced through the rolling friction between the first universal ball assembly and the top plate and the rolling friction between the second universal ball assembly and the bearing plate.
2. The transition device defined in claim 1, wherein the first universal ball assembly comprises a plurality of universal balls, each of the universal balls comprising a cover shell and a ball bearing, the ball bearing being interstitially embedded in the cover shell to form a ball set such that the ball bearing can rotate in any direction in the cover shell to reduce friction.
3. The transition device according to claim 2, wherein the covering shell of the ball gimbal is a cylindrical structure, the bottom plate is provided with a plurality of cylindrical grooves, and each ball gimbal is mounted to the corresponding cylindrical groove via a clearance fit formed by the covering shell of the cylindrical structure and the cylindrical groove of the bottom plate.
4. The adapter device according to claim 1, wherein the base assembly further comprises a plurality of stoppers respectively disposed at the edge portions of the bottom plate, the plurality of stoppers restricting a sliding range of the top plate on the first universal ball assembly to prevent the top plate from falling down when sliding.
5. The adapter device according to claim 4, wherein one or more of the plurality of the limiting blocks are provided with adjusting screws for adjusting and restricting the position of the top plate according to the swing range required by the letter detector during detection.
6. The transition device defined in claim 1, wherein the second ball transfer assembly comprises a plurality of ball transfer units, each of which is comprised of a cover and a ball that is interstitially embedded within the cover to form a ball set such that the ball can rotate in any direction within the cover to reduce friction.
7. The transition device defined in claim 6, wherein the cladding shell of the universal ball is of cylindrical configuration and the rotatable disk is provided with a plurality of cylindrical slots, each universal ball being mounted to a corresponding cylindrical slot via a clearance fit formed by the cladding shell of cylindrical configuration and the cylindrical slots of the rotatable disk.
8. The transition device defined in claim 6, wherein the height adjustment mechanism further comprises a connection assembly via which the rotating disc is rotatably connected to the adjustment base.
9. The adapter of claim 8, wherein the connecting assembly comprises a bushing fixedly connected to the adjusting base by a screw and having a screw thread on an inner wall thereof, and a T-shaped screw fixedly installed in a bottom circular groove of the rotary plate by a screw and having a screw thread on an outer wall thereof adapted to the bushing, the T-shaped screw being threadedly connected to the bushing to form a state in which the rotary plate is rotatably connected to the adjusting base.
10. The transition device according to claim 9, wherein the rotating disc is provided with force applying holes at intervals along a circumferential direction thereof, the force applying holes being adapted to be inserted into a force applying rod so that the rotating disc can be rotated via the force applying rod.
11. The adapter of claim 9, wherein the top of the rotating disc is provided with a receiving slot, the second ball-and-socket assembly is disposed in the receiving slot, the bearing plate is supported on the second ball-and-socket assembly and has a diameter smaller than that of the receiving slot, and when the bearing plate is supported on the second ball-and-socket assembly, an upper surface of the bearing plate is higher than an upper surface of the rotating disc and a lower surface of the bearing plate is lower than the upper surface of the rotating disc, so that a sliding motion of the bearing plate on the second ball-and-socket assembly is restricted by the rotating disc.
12. The adapter device according to any one of claims 1 to 11, further comprising a prism mounting seat, wherein the prism mounting seat is adapted to be mounted on a slide rail of the letter detector, and comprises a protective bottom plate, two vertical plates symmetrically and fixedly connected to two sides of the protective bottom plate, and a placing plate with two ends respectively connected to the two vertical plates, and a side surface of the placing plate is provided with a mechanical interface for connecting a prism assembly.
13. The adapter device of claim 12, wherein the prism mount further comprises a locking screw disposed on the protective base plate for locking the prism mount to a slide rail of the letters inspection machine.
14. A transfer function detection system, comprising an air floating platform, a transfer function detector, a light source of the transfer function detector, a reflector and a switching device according to any one of claims 1 to 13, wherein the transfer device is arranged on the transfer function detector and is used for reducing the acting force or moment transmitted to the transfer function detector when the load swings or rotates.
15. The system of claim 14, further comprising a data processing module communicatively coupled to the transfer detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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