Curved arm and calibration device with curved arm
By designing a calibration device with arc arms, the combination of arc arms and gimbals is used to solve the problem of improper arrangement of the emission transducer in the silence pool, efficient calibration of the ultra-short baseline matrix is achieved, and calibration accuracy and efficiency are improved.
Patent Information
- Application Number
- CN202421444270.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-24
AI Technical Summary
During the calibration process of ultra-short baseline baseline matrix, how to place multiple transmitters in a silence pool according to certain rules to achieve effective calibration of ultra-short baseline matrix.
A calibration device with an arc arm is designed, and the transmitter transducers are installed through multiple gimbals on the arc arm, and the structure of the arc arm is used to arrange the transmitters at intervals from each other in the height direction, so as to achieve rapid adjustment and coplanar configuration of the transducers.
Through the design of arc arms and gimbals, the transmitter transducer is quickly and accurately placed in the silence pool, improving the calibration accuracy and efficiency of the ultra-short baseline matrix.
Smart Images
Figure CN222750445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a calibration device in the technical field of underwater acoustic engineering, in particular to an arc-shaped arm and a calibration device with the arc-shaped arm. Background Art
[0002] Transducers that communicate based on hydroacoustic signals have a wide range of uses in the development and utilization of marine resources. For example, transducers can be used as ultra-short baseline arrays, and cooperate with electronic cabins to form ultra-short baseline positioning systems to achieve the positioning of underwater targets such as submersibles and divers. It can be understood by those skilled in the art that the accuracy of the ultra-short baseline array determines the positioning accuracy of the ultra-short baseline positioning system. Therefore, in order to ensure the positioning accuracy of the ultra-short baseline positioning system, the ultra-short baseline array needs to be calibrated after it is manufactured. In the process of calibrating the ultra-short baseline array, the ultra-short baseline array to be calibrated and other multiple transmitting transducers for transmitting acoustic signals need to be placed in an anechoic pool according to certain rules to allow the ultra-short baseline array to be calibrated to receive the acoustic signals emitted by these transmitting transducers, thereby achieving the calibration operation of the ultra-short baseline array to be calibrated. How to place these transmitting transducers in an anechoic pool according to certain rules is a technical problem that the inventor of the utility model is committed to solving. Utility Model Content
[0003] One object of the utility model is to provide an arc-shaped arm and a calibration device with the arc-shaped arm, wherein the arc-shaped arm and the assembly arm of the calibration device are respectively mounted on a calibration frame, the assembly arm is used to mount an ultra-short baseline array, and the arc-shaped arm is provided with a plurality of pan-tilts for mounting a transmitting transducer for transmitting an underwater acoustic signal, so that a plurality of transmitting transducers can be placed in an anechoic pool by the calibration device according to certain rules to calibrate the ultra-short baseline array in the anechoic pool. For example, the arc-shaped arm allows the transmitting transducers to be arranged spaced apart from each other along the height direction.
[0004] One object of the utility model is to provide an arc-shaped arm and a calibration device with the arc-shaped arm, wherein the arc-shaped arm is formed by splicing two or more arc-shaped plates, so that the arc-shaped arm of a large size can be manufactured at a lower cost.
[0005] One object of the utility model is to provide an arc-shaped arm and a calibration device with the arc-shaped arm, wherein the calibration device allows a transmitting transducer to be mounted on the gimbal, so that the gimbal can adjust the posture of the transmitting transducer, for example, the geometric center of the transmitting transducer can be adjusted so that the geometric centers of these transmitting transducers can be coplanar.
[0006] One object of the utility model is to provide an arc-shaped arm and a calibration device with the arc-shaped arm, wherein the assembly surfaces of the various assembly parts of the arc-shaped arm are coplanar, and the various pan-tilt heads are respectively installed on the assembly surfaces of the various assembly parts of the arc-shaped arm. In this way, not only the requirements for the adjustment range of the pan-tilt heads can be reduced, but also the geometric centers of the various transmitting transducers can be quickly adjusted to be coplanar.
[0007] According to one aspect of the present invention, the present invention provides an arc-shaped arm, comprising:
[0008] at least one screw assembly, wherein the screw assembly comprises a screw and a nut;
[0009] At least two arc-shaped plates, wherein at least one end of each of the arc-shaped plates has a splicing portion and a splicing groove, respectively, the splicing portion has at least one through hole, and in two adjacent arc-shaped plates, the size and shape of the splicing portion of one arc-shaped plate are consistent with the size and shape of the splicing groove of the other arc-shaped plate, and when the splicing portion of one arc-shaped plate is placed in the splicing groove of the other arc-shaped plate so that the splicing portions of the two adjacent arc-shaped plates are overlapped, the positions of the through holes of the two splicing portions are opposite, wherein one end of the screw rod is screwed onto the nut after passing through the through holes of the two splicing portions respectively, so that the splicing portions of the two adjacent arc-shaped plates are locked by the screw rod assembly.
[0010] According to one embodiment of the utility model, the splicing portion of the arc plate has at least one pin hole, and the arc arm includes at least one pin, one end of the pin is inserted into the pin hole of the splicing portion of one arc plate, and the other end of the pin is inserted into the pin hole of the splicing portion of another arc plate.
[0011] According to one embodiment of the utility model, the splicing portion of the arc plate has two pin holes, and the arc arm includes two pins, one end of the two pins are respectively installed in the two pin holes of the splicing portion of one arc plate, and the other end of the two pins are respectively inserted in the two pin holes of the splicing portion of another arc plate, so that when splicing two adjacent arc plates, the two pins have the function of pre-assembling the two arc plates and positioning each of the through holes of the splicing portion of the two arc plates.
[0012] According to an embodiment of the present invention, the side of the arc-shaped plate has at least one assembly portion, and the assembly surface of the assembly portion is formed by milling through a milling process.
[0013] According to an embodiment of the utility model, the assembly portion of the arc-shaped plate is a boss.
[0014] According to an embodiment of the present invention, the number of the assembly parts of the arc-shaped plate is more than two, and the assembly surfaces of these assembly parts are coplanar.
[0015] According to another aspect of the utility model, the utility model further provides a calibration device with an arc-shaped arm, which includes a calibration frame, an arc-shaped arm, an assembly arm and a plurality of pan-tilt heads, wherein the arc-shaped arm is mounted on the calibration frame, and the arc-shaped arm further includes at least one screw assembly and at least two arc-shaped plates, the screw assembly includes a screw and a nut, at least one end of each of the arc-shaped plates has a splicing portion and a splicing groove, the splicing portion has at least one through hole, and in two adjacent arc-shaped plates, the size and shape of the splicing portion of one arc-shaped plate are the same as the splicing groove of the other arc-shaped plate The sizes and shapes of the two arc plates are consistent, and when the splicing portion of one arc plate is placed in the splicing groove of another arc plate to make the splicing portions of two adjacent arc plates overlap, the positions of the through holes of the two splicing portions are relative, wherein one end of the screw rod is screwed onto the nut after passing through the through holes of the two splicing portions respectively, so that the splicing portions of the two adjacent arc plates are locked by the screw rod assembly, wherein each of the pan-tilt heads is arranged on the arc arm at intervals along the extension direction of the arc arm, wherein the assembly arm is installed on the calibration frame on the concave side of the arc arm.
[0016] According to one embodiment of the utility model, the calibration frame includes a base frame, a top frame and a side frame, the bottom of the side frame is installed on one end of the base frame, the top of the side frame is installed on one end of the top frame, and the top frame is located directly above the base frame, wherein the bottom of the arc arm is installed on the base frame, the convex side of the arc arm is installed on the side frame, and the top of the arc arm is installed on the top frame, so that the base frame, the side frame and the arc arm form a triangular structure and the top frame, the side frame and the arc arm form a triangular structure.
[0017] According to one embodiment of the utility model, the number of the arc plates of the arc arm is three, and from bottom to top, the three arc plates are defined as a bottom arc plate, a middle arc plate and a top arc plate, and the opposite ends of the middle arc plate are respectively spliced with the bottom arc plate and the top arc plate.
[0018] According to one embodiment of the utility model, the calibration frame includes three pulling arms, wherein the opposite ends of one of the pulling arms are respectively installed on the base frame and the bottom curved plate, the opposite ends of another pulling arm are respectively installed on the side frame and the middle curved plate, and the opposite ends of the last pulling arm are respectively installed on the side frame and the top curved plate.
[0019] According to one embodiment of the utility model, the calibration frame includes a plurality of wheel groups, and a plurality of positions of the base frame are respectively provided with a wheel group to allow the calibration frame to be moved in a standing position; or, the calibration frame includes a plurality of wheel groups, and a plurality of positions of the base frame and a plurality of positions of the side frame are respectively provided with a wheel group to allow the calibration frame to be selectively moved in a standing position or a lying position.
[0020] According to an embodiment of the present invention, the calibration frame includes at least one hanging portion, and the hanging portion is installed on the top frame.
[0021] According to one embodiment of the utility model, the splicing portion of the arc plate has at least one pin hole, and the arc arm includes at least one pin, one end of the pin is inserted into the pin hole of the splicing portion of one arc plate, and the other end of the pin is inserted into the pin hole of the splicing portion of another arc plate.
[0022] According to one embodiment of the utility model, the side of the arc-shaped plate has a plurality of assembly parts, and the assembly surfaces of the assembly parts are formed by milling by a milling process so that the assembly surfaces of the assembly parts are coplanar, wherein each of the pan-tilt heads is respectively installed on the assembly surfaces of each of the assembly parts of the arc-shaped plate of the arc-shaped arm. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of a calibration device with an arc-shaped arm according to the utility model.
[0024] Figure 2 It is a three-dimensional schematic diagram of a curved arm of the calibration device according to the above preferred embodiment of the utility model from one viewing angle.
[0025] Figure 3 It is a three-dimensional schematic diagram of the arc-shaped arm of the calibration device according to the above preferred embodiment of the utility model from another perspective.
[0026] Figure 4 It is a schematic diagram of an exploded view of the arc-shaped arm of the calibration device according to the above preferred embodiment of the utility model from one perspective.
[0027] Figure 5 yes Figure 4A magnified view of the local location.
[0028] Figure 6 It is a schematic diagram of an exploded view of the arc-shaped arm of the calibration device according to the above preferred embodiment of the utility model from another perspective.
[0029] Figure 7 It is a schematic cross-sectional view of the arc-shaped arm of the calibration device according to the above preferred embodiment of the utility model.
[0030] Figure 8 yes Figure 7 A magnified view of the local location. DETAILED DESCRIPTION
[0031] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.
[0032] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.
[0033] Referring to the drawings of the specification of the utility model Figures 1 to 8A calibration device with an arc-shaped arm according to a preferred embodiment of the utility model will be disclosed and explained in the following description, wherein the calibration device includes a calibration frame 10, an arc-shaped arm 20, an assembly arm 30 and a plurality of pan-tilt platforms 40, wherein the arc-shaped arm 20 and the assembly arm 30 are respectively mounted on the calibration frame 10, and the assembly arm 30 is located on the concave side of the arc-shaped arm 20, and each pan-tilt platform 40 is respectively arranged on the arc-shaped arm 20 at intervals along the extension direction of the arc-shaped arm 20. An ultra-short baseline array can be mounted on the assembly arm 30, and a transducer for transmitting an acoustic signal can be mounted on the pan-tilt platform 40, so that when calibrating the ultra-short baseline array, the ultra-short baseline array can receive the acoustic signals transmitted by these transmitting transducers. That is to say, the ultra-short baseline array is a receiving transducer, and the transducer mounted on the pan-tilt platform 40 forms a transmitting transducer, and these transmitting transducers constitute a transmitting transducer array.
[0034] By arranging the transmitting transducer on the pan-tilt platform 40, the pan-tilt platform 40 can adjust the posture of the transmitting transducer, thereby adjusting the position of the geometric center of the transmitting transducer, so that the geometric centers of these transmitting transducers and the ideal positions of the acoustic center of the ultra-short baseline array can be coplanar. Since each of the pan-tilt platforms 40 is arranged on the arc arm 20 at intervals along the extension direction of the arc arm 20, and these pan-tilt platforms 40 are respectively used to install the transmitting transducer and the assembly arm 30 to suspend the ultra-short baseline array on the concave side of the arc arm 20, the distance from the geometric center of each transmitting transducer to the ideal position of the acoustic center of the ultra-short baseline array can be the same, for example, the distance from the geometric center of each transmitting transducer to the ideal center of the acoustic center of the ultra-short baseline array is 1m, so as to meet the calibration requirements of the ultra-short baseline array.
[0035] Reference Figure 1 The calibration frame 10 includes a base frame 11, a top frame 12 and a side frame 13. The bottom of the side frame 13 is installed on one end of the base frame 11, and the top of the side frame 13 is installed on one end of the top frame 12. The top frame 12 is located directly above the base frame 11.
[0036] It is worth mentioning that the specific manner in which the bottom of the side frame 13 is mounted on one end of the bottom frame 11 and the top of the side frame 13 is mounted on one end of the top frame 12 is not limited in the calibration device of the present invention. Figures 1 to 8In this specific example of the calibration device of the present invention shown, the base frame 11, the top frame 12 and the side frame 13 are all profiles, such as but not limited to aluminum profiles, the bottom of the side frame 13 is installed on one end of the base frame 11 through a profile connector, and the top of the side frame 13 is installed on one end of the top frame 12 through a profile connector.
[0037] Continue to refer to the attached Figure 1 The calibration frame 10 further includes a plurality of wheel sets 14, and a plurality of positions of the bottom frame 11 are respectively provided with a wheel set 14, so that the calibration device can be moved in a standing position. Preferably, a plurality of positions of the side frame 13 can also be respectively provided with a wheel set 14, so that the calibration device can be moved in a lying position. That is, in the attached Figures 1 to 8 In this specific example of the calibration device of the present invention shown, the calibration device can be selectively moved in a standing position or a lying position according to the actual calibration scenario.
[0038] Continue to refer to the attached Figure 1 The calibration frame 10 includes at least one hoisting portion 15, which is installed on the top frame 12. A hoisting device (e.g., a crane) can hoist the calibration device through the hoisting portion 15 to facilitate changing the position of the calibration device. For example, the hoisting device can conveniently hoist the calibration device into a silencing pool. The number of the hoisting portions 15 can be two, and the two hoisting portions 15 are installed on the top frame 12 at intervals from each other. In this way, during the hoisting process of the calibration device, the calibration device can be prevented from tilting to ensure safety.
[0039] The bottom of the arc-shaped arm 20 is mounted on the bottom frame 11, the top of the arc-shaped arm 20 is mounted on the top frame 12, and the convex side of the arc-shaped arm 20 is mounted on the side frame 13. In this way, on the one hand, the arc-shaped arm 20 can be mounted on the calibration frame 10, and on the other hand, the arc-shaped arm 20 supports the calibration frame 10 in three directions to maintain stability of the calibration frame 10. Specifically, a stable triangular structure is formed between the arc-shaped arm 20, the bottom frame 11, and the side frame 13, and a stable triangular structure is formed between the arc-shaped arm 20, the top frame 12, and the side frame 13.
[0040] It is worth mentioning that the specific manner in which the bottom, top and convex side of the arc-shaped arm 20 are respectively mounted on the bottom frame 11, the top frame 12 and the side frame 13 is not limited in the calibration device of the present utility model. Figures 1 to 8In this specific example of the calibration device of the present invention shown, the arc arm 20 is a profile, and the bottom, top and convex side of the arc arm 20 are respectively mounted on the base frame 11, the top frame 12 and the side frame 13 through profile connectors.
[0041] Reference Figures 2 to 8 The arc-shaped arm 20 includes at least one screw assembly 21 and at least two arc-shaped plates 22. The screw assembly 21 includes a screw 211 and a nut 212, and the nut 212 can be screwed on one end of the screw 211, wherein the screw 211 and the nut 212 can cooperate to lock two adjacent arc-shaped plates 22, so as to splice these small-sized arc-shaped plates 22 to obtain a large-sized arc-shaped arm 20, so as to reduce the manufacturing cost and manufacturing difficulty of the arc-shaped arm 20.
[0042] Specifically, at least one end of the arc-shaped plate 22 has a splicing portion 221 and a splicing groove 222 , and the splicing portion 221 has at least one through hole 2211 . In two adjacent arc plates 22, the size and shape of the splicing portion 221 of one arc plate 22 are consistent with the size and shape of the splicing groove 222 of the other arc plate 22. When the splicing portion 221 of one arc plate 22 is placed in the splicing groove 222 of the other arc plate 22 so that the splicing portions 221 of the two adjacent arc plates 22 are stacked, the positions of the through holes 2211 of the two splicing portions 221 are relative, wherein one end of the screw rod 211 is screwed onto the nut 212 after passing through the through holes 2211 of the two splicing portions 221, so that the screw rod 211 and the nut 212 cooperate with each other to lock the splicing portions 221 of the two stacked arc plates 22, thereby realizing the splicing of the two arc plates 22 to obtain a large-sized arc plate 22.
[0043] Preferably, the number of the through holes 2211 of the splicing portion 221 of the arc plate 22 is multiple, so that the multiple screw assemblies 21 can reliably splice two adjacent arc plates 22 to avoid the arc plate 22 from tilting, which is crucial to ensure that the geometric centers of the transmitting transducers can be adjusted to be coplanar by the gimbal 40.
[0044] It can be understood that, since the arc-shaped arm 20 is curved and extends in the height direction, and in the two adjacent arc-shaped plates 22 of the arc-shaped arm 20, the size and shape of the splicing portion 221 of one arc-shaped plate 22 are consistent with the size and shape of the splicing groove 222 of the other arc-shaped plate 22, so that when the splicing portion 221 of one arc-shaped plate 22 is placed in the splicing groove 222 of the other arc-shaped plate 22 and the splicing portions 221 of the two adjacent arc-shaped plates 22 are stacked, the end surface of the top end of the arc-shaped plate 22 located below abuts upward. The inner wall of the arc plate 22 located at the top is used to define the splicing groove 222, and the end surface of the bottom end of the arc plate 22 located at the top is pressed downward against the inner wall of the arc plate 22 located at the bottom, so that the two spliced arc plates 22 support each other to prevent the arc plate 22 located at the top from tilting downward due to its own gravity. In this way, when each transducer is installed on the pan-tilt head 40 to form the transmitting transducer, the distance from the geometric center of each transmitting transducer to the ideal position of the acoustic center of the ultra-short baseline array is maintained unchanged.
[0045] Continue to refer to the attached Figures 6 to 8 The splicing portion 221 of the arc plate 22 has at least one pin hole 2212. When the splicing portion 221 of one arc plate 22 is placed in the splicing groove 222 of another arc plate 22 so that the splicing portions 221 of two adjacent arc plates 22 are stacked, the positions of the pin holes 2212 of the two splicing portions 221 are relative. The arc arm 20 further includes at least one pin 23, one end of the pin 23 is inserted into the pin hole 2212 of the splicing portion 221 of one arc plate 22, and the other end of the pin 23 is inserted into the pin hole 2212 of the splicing portion 221 of another arc plate 22. In this way, the pin 23 cooperates with the screw rod assemblies 21 to further prevent the arc plate 22 located above from tilting downward due to its own gravity. Preferably, the number of the pin holes 2212 of the splicing portion 221 of the arc-shaped plate 22 is two.
[0046] In addition, the process of splicing two adjacent arc-shaped plates 22 is: first, insert one end of the two pins 23 into the two pin holes 2212 of the splicing portion 221 of the first arc-shaped plate 22 respectively; second, when the splicing portion 221 of the second arc-shaped plate 22 is overlapped with the splicing portion 221 of the first arc-shaped plate 22, allow the other end of the two pins 23 to be inserted into the two pin holes 2212 of the second arc-shaped plate 22 respectively, so that the two pins 23 cooperate with each other to pre-splice the two adjacent arc-shaped plates. 22 and positioning these through holes 2211 of the splicing parts 221 of the two arc plates 22 to ensure that the positions of the through holes 2211 of the splicing part 221 of one arc plate 22 correspond to the positions of the through holes 2211 of the splicing part 221 of the other arc plate 22, so that one end of the screw rod 211 passes through one through hole 2211 of the splicing part 221 of one arc plate 22 and one through hole 2211 of the splicing part 221 of the other arc plate 22 in sequence.
[0047] Reference Figures 1 to 5 , Figure 6 and Figure 7 , the number of the arc plates 22 used to splice the arc arm 20 is three. For the convenience of description, in the calibration device of the present invention, from bottom to top, the three arc plates 22 are defined as a bottom arc plate 22a, a middle arc plate 22b and a top arc plate 22c, and the opposite ends of the middle arc plate 22b are spliced with the bottom arc plate 22a and the top arc plate 22c respectively. After the bottom arc plate 22a, the middle arc plate 22b and the top arc plate 22c are spliced to form the arc arm 20, the end of the bottom arc plate 22a away from the middle arc plate 22b (i.e., the bottom end of the bottom arc plate 22a) is installed on the base frame 11, the end of the middle arc plate 22b adjacent to the bottom arc plate 22a (i.e., the bottom end of the middle arc plate 22b) is installed on the side frame 13, and the end of the top arc plate 22c away from the middle arc plate 22b (i.e., the top end of the top arc plate 22c) is installed on the top frame 12.
[0048] Further, please refer to the attached Figure 1The calibration frame 10 includes three pulling arms 16, wherein the opposite ends of one of the pulling arms 16 are respectively installed on the base frame 11 and the bottom curved plate 22a, so that a stable triangular structure is formed between the bottom curved plate 22a, one of the pulling arms 16 and the base frame 11, the opposite ends of another of the pulling arms 16 are respectively installed on the side frame 13 and the middle curved plate 22b, so that a stable triangular structure is formed between the middle curved plate 22b, one of the pulling arms 16 and the side frame 13, and the opposite ends of the last pulling arm 16 are respectively installed on the side frame 13 adjacent to the top frame 12 and the top curved plate 22c, so that a stable triangular structure is formed between the top curved plate 22c, one of the pulling arms 16 and the top frame 12. Optionally, in other examples of the calibration device of the present invention, the opposite ends of the last pulling arm 16 can also be installed on the top frame 12 and the top curved plate 22c, respectively, so that a stable triangular structure is formed between the top curved plate 22c, one pulling arm 16 and the top frame 12.
[0049] It is worth mentioning that the specific installation method of the pulling arm 16 and the arc plate 22, the bottom frame 11, the top frame 12 and the side frame 13 is not limited in the calibration device of the utility model. Figures 1 to 8 In the specific example of the calibration device of the present invention shown, the pulling arm 16 is also a profile, which is mounted to the curved plate 22, the bottom frame 11, the top frame 12 and the side frame 13 through a profile mounting frame.
[0050] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 The side of the arc plate 22 has at least one assembly part 223, and the assembly part 223 has an assembly surface 2231. The assembly surface 2231 of the assembly part 223 is formed by milling by a milling process, so that not only the flatness of the assembly surface 2231 of the assembly part 223 can be guaranteed, but also the assembly surfaces 2231 of these assembly parts 223 can be guaranteed to be coplanar. In the calibration device of the present utility model, since the pan-tilt platform 40 is mounted on the arc arm 20 at the assembly surface 2231 of the assembly part 223, the assembly surfaces 2231 of each assembly part 223 of the arc arm 20 are set to be coplanar, so that the adjustment range requirement of the pan-tilt platform 40 can be reduced, so as to reduce the cost and manufacturing difficulty of the pan-tilt platform 40, and it is beneficial to adjust the geometric centers of each transmitting transducer to be coplanar.
[0051] Preferably, in the attached Figures 1 to 8In this specific example of the calibration device of the present invention, the assembly portion 223 of the arc plate 22 is a boss to ensure that the arc arm 20 has good force bearing capacity. Optionally, in other examples of the calibration device of the present invention, the assembly portion 223 of the arc plate 22 may also be a groove.
[0052] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. Arc-shaped arm, characterized in that: include: at least one screw assembly, wherein the screw assembly comprises a screw and a nut; At least two arc-shaped plates, wherein at least one end of each of the arc-shaped plates has a splicing portion and a splicing groove, respectively, the splicing portion has at least one through hole, and in two adjacent arc-shaped plates, the size and shape of the splicing portion of one arc-shaped plate are consistent with the size and shape of the splicing groove of the other arc-shaped plate, and when the splicing portion of one arc-shaped plate is placed in the splicing groove of the other arc-shaped plate so that the splicing portions of the two adjacent arc-shaped plates are overlapped, the positions of the through holes of the two splicing portions are opposite, wherein one end of the screw rod is screwed onto the nut after passing through the through holes of the two splicing portions respectively, so that the splicing portions of the two adjacent arc-shaped plates are locked by the screw rod assembly.
2. The arc-shaped arm according to claim 1, wherein the splicing portion of the arc-shaped plate has at least one pin hole, and the arc-shaped arm includes at least one pin, one end of the pin is inserted into the pin hole of the splicing portion of one arc-shaped plate, and the other end of the pin is inserted into the pin hole of the splicing portion of another arc-shaped plate.
3. The arc-shaped arm according to claim 2, wherein the splicing portion of the arc-shaped plate has two pin holes, and the arc-shaped arm includes two pins, one end of the two pins are respectively installed in the two pin holes of the splicing portion of one arc-shaped plate, and the other end of the two pins are respectively inserted in the two pin holes of the splicing portion of another arc-shaped plate, so that when splicing two adjacent arc-shaped plates, the two pins have the function of pre-assembling the two arc-shaped plates and positioning each of the through holes of the splicing portion of the two arc-shaped plates.
4. The arc-shaped arm according to claim 1, wherein the side of the arc-shaped plate has at least one assembly portion, and the assembly surface of the assembly portion is formed by milling through a milling process. The arc-shaped arm according to claim 4 , wherein the fitting portion of the arc-shaped plate is a boss. 6 . The arc-shaped arm according to claim 4 , wherein the number of the fitting parts of the arc-shaped plate is two or more, and the fitting surfaces of the fitting parts are coplanar.
7. A calibration device with an arc-shaped arm, characterized in that: The invention comprises a calibration frame, an arc-shaped arm, an assembly arm and a plurality of pan-tilt heads, wherein the arc-shaped arm is mounted on the calibration frame, and the arc-shaped arm further comprises at least one screw assembly and at least two arc-shaped plates, the screw assembly comprises a screw and a nut, at least one end of each of the arc-shaped plates respectively comprises a splicing portion and a splicing groove, the splicing portion comprises at least one through hole, in two adjacent arc-shaped plates, the size and shape of the splicing portion of one arc-shaped plate is consistent with the size and shape of the splicing groove of the other arc-shaped plate, and in one of the arc-shaped plates, the size and shape of the splicing portion of the ... The splicing part of the plate is placed in the splicing groove of another arc-shaped plate so that when the splicing parts of two adjacent arc-shaped plates are overlapped, the positions of the through holes of the two splicing parts are relative, wherein one end of the screw rod is screwed with the nut after passing through the through holes of the two splicing parts respectively, so that the splicing parts of the two adjacent arc-shaped plates are locked by the screw rod assembly, wherein each of the pan-tilt heads is arranged on the arc-shaped arm at intervals along the extension direction of the arc-shaped arm, wherein the assembly arm is installed on the calibration frame on the concave side of the arc-shaped arm.
8. The calibration device according to claim 7, wherein the calibration frame comprises a base frame, a top frame and a side frame, the bottom of the side frame is mounted on one end of the base frame, the top of the side frame is mounted on one end of the top frame, and the top frame is located directly above the base frame, wherein the bottom of the arc arm is mounted on the base frame, the convex side of the arc arm is mounted on the side frame, and the top of the arc arm is mounted on the top frame, so that the base frame, the side frame and the arc arm form a triangular structure and the top frame, the side frame and the arc arm form a triangular structure.
9. The calibration device according to claim 8, wherein the number of the arc plates of the arc arm is three, and from bottom to top, the three arc plates are defined as a bottom arc plate, a middle arc plate and a top arc plate, and the opposite ends of the middle arc plate are respectively spliced with the bottom arc plate and the top arc plate.
10. The calibration device according to claim 9, wherein the calibration frame comprises three pulling arms, wherein the opposite ends of one of the pulling arms are respectively mounted on the base frame and the bottom curved plate, the opposite ends of another pulling arm are respectively mounted on the side frame and the middle curved plate, and the opposite ends of the last pulling arm are respectively mounted on the side frame and the top curved plate.
11. A calibration device according to claim 8, 9 or 10, wherein the calibration frame includes a plurality of wheel sets, and a plurality of positions of the base frame are respectively provided with a wheel set to allow the calibration frame to be moved in a standing position; or, the calibration frame includes a plurality of wheel sets, and a plurality of positions of the base frame and a plurality of positions of the side frame are respectively provided with a wheel set to allow the calibration frame to be selectively moved in a standing position or a lying position.
12. The calibration device according to claim 8, 9 or 10, wherein the calibration frame comprises at least one hanging portion, and the hanging portion is installed on the top frame.
13. A calibration device according to claim 7, 8, 9 or 10, wherein the splicing portion of the arc plate has at least one pin hole, and the arc arm includes at least one pin, one end of the pin is inserted into the pin hole of the splicing portion of one arc plate, and the other end of the pin is inserted into the pin hole of the splicing portion of another arc plate.
14. A calibration device according to claim 7, 8, 9 or 10, wherein the side of the arc plate has a plurality of assembly parts, and the assembly surfaces of these assembly parts are formed by milling by a milling process so that the assembly surfaces of these assembly parts are coplanar, wherein each of the pan-tilt heads is respectively mounted on the assembly surfaces of each of the assembly parts of the arc plate of the arc arm.