High-precision antenna test scanning frame horizontal shaft

Abstract

The utility model relates to antenna test technical field, concretely relates to a kind of high-precision antenna test scanning frame horizontal shaft, guide slide rail and multiple horizontal sections that are connected in order, the structure of scanning frame horizontal shaft is optimized, so that guide slide rail can be connected with multiple horizontal sections that are spliced in order, so that the high-precision machining equipment of existing can carry out high-precision machining to horizontal section and docking reference structure, to ensure the precision of multiple horizontal sections that are connected in order, while ensuring the precision of connection between guide rail, realize the high-precision machining demand of scanning frame horizontal shaft of different length, simple structure meets the machining and detection precision requirement of large, super large scanning frame horizontal shaft, reduce machining difficulty and machining cost, convenient dismounting and transportation, while it can realize the high-precision use demand of scanning frame horizontal shaft, improve production efficiency, ensure that antenna detection is accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of antenna testing technology, specifically to a high-precision antenna testing scanning frame horizontal axis. Background Technology

[0002] When performing planar near-field and far-field tests on an antenna, it is usually necessary to mount the antenna under test on an antenna test scanning frame. An antenna probe with known characteristics is used to scan on a plane at a set wavelength away from the antenna under test, measuring the amplitude and phase distribution of the antenna at discrete points on that plane. Through rigorous mathematical transformations, the radiation characteristics of the far-field region of the antenna under test are determined, thereby determining the antenna's far-field radiation pattern. During the test, it is necessary to adjust the horizontal position, vertical height, and axial rotation angle of the antenna probe. For example, Chinese utility model patent with publication number CN221466828U provides an antenna planar near-field scanning frame, which uses front-back adjustment devices, up-down adjustment devices, left-right adjustment devices, and horizontal adjustment devices to realize the horizontal position, vertical height, and axial rotation angle of the antenna probe.

[0003] With the rapid development of high-tech industries such as phased array antennas and radar in recent years, the testing requirements for antennas in planar near and far field tests are becoming increasingly stringent. In order to meet the accuracy requirements of the entire planar near field test system, the repeatability of the horizontal axis of the scanning frame has reached a requirement of better than 0.1mm. In some cases, the requirement of repeatability of the horizontal axis is even better than 0.05mm, thus increasing the machining accuracy requirements of the horizontal axis of the scanning frame.

[0004] However, for large or extra-large scanning frames, the horizontal axis length usually exceeds 18m. The machining length of the entire horizontal axis exceeds the machining capacity of most boring and milling composite machining centers. Therefore, the high-precision machining of the horizontal axis of the scanning frame further increases the machining difficulty and cost, and cannot meet the actual needs of high-precision antenna testing. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision antenna test scanning frame horizontal axis, thereby solving the technical problem of high machining difficulty of the current high-precision antenna test scanning frame horizontal axis.

[0006] The solution of this utility model to the above-mentioned technical problems is as follows:

[0007] A high-precision antenna test scanning frame horizontal axis includes a guide rail and multiple sequentially connected horizontal segments. Adjacent horizontal segments are connected by a docking reference structure. The guide rail is arranged on top of the multiple sequentially connected horizontal segments along the length direction of the horizontal segments.

[0008] Further defined, the horizontal segment includes two horizontal rails and a sleeper beam connecting the two horizontal rails, the two horizontal rails are arranged in parallel, and the sleeper beam is perpendicularly connected to the horizontal rails; the docking reference structure is set at the end of the horizontal rail, the guide slide rail is arranged along the length direction of the horizontal rail, and the guide slide rail is detachably connected to the upper end face of the horizontal rail.

[0009] Further specifying, the horizontal segment also includes a positioning processing strip, which is disposed between the horizontal track and the guide slide rail along the length direction of the horizontal track. The guide slide rail is detachably connected to the upper end face of the horizontal track through the positioning processing strip; the docking reference structure is located above the positioning processing strip.

[0010] Further defined, the guide rail includes a reference guide rail and an auxiliary guide rail, the reference guide rail and the auxiliary guide rail are arranged in parallel, and the positioning processing strip includes a reference positioning strip and an auxiliary positioning strip;

[0011] The reference positioning strip has a guide rail positioning groove and a guide rail tightening groove parallel to the guide rail positioning groove. The guide rail tightening groove is located on one side of the guide rail positioning groove. The guide rail positioning groove has an L-shaped structure, and the guide rail tightening groove has a trapezoidal structure. One side of the reference guide rail is in contact with the vertical end face of the guide rail positioning groove, and the bottom surface of the reference guide rail is in contact with the horizontal end face of the guide rail positioning groove. The other side of the reference guide rail is engaged with the guide rail tightening groove through a trapezoidal tightening block.

[0012] The auxiliary positioning bar has a guide rail positioning groove, and the auxiliary guide rail cooperates with the auxiliary positioning bar through the guide rail positioning groove.

[0013] Further specifying, the docking reference structure includes a docking reference plate, a locking mechanism, and a positioning mechanism;

[0014] The number of docking reference plates is two. The positioning mechanism is set on the docking surface of the docking reference plate. The connecting surface of the docking reference plate is connected to the end of the horizontal track. The docking reference plate is set perpendicular to the horizontal track. The two docking reference plates are connected by a locking mechanism. The positioning processing strip is located on the upper end surface of the docking reference plate and is connected to the docking reference plate.

[0015] Furthermore, the docking reference structure also includes multiple support beams, which are connected between the docking reference plate and the adjacent sleeper beams. The support beams between the docking reference plate and the adjacent sleeper beams are spaced apart along the length of the sleeper beams.

[0016] Further defining the positioning mechanism, the positioning mechanism includes a seam pin and a seam pin hole, wherein the seam pin hole is formed between two adjacent docking reference plates, and the two adjacent docking reference plates are engaged by the seam pin.

[0017] Further specifying, the horizontal axis of the high-precision antenna test scanning frame also includes a guide rack, which is arranged parallel to the horizontal track. The reference positioning bar has a rack positioning groove, which is L-shaped. The connecting end of the guide rack contacts the vertical end face of the rack positioning groove, the bottom surface of the guide rack contacts the horizontal end face of the rack positioning groove, and the meshing end of the guide rack is opposite to the auxiliary positioning bar.

[0018] Furthermore, the horizontal axis of the high-precision antenna test scanning frame also includes multiple horizontal adjustment blocks, which are spaced apart along the length of the horizontal track and connected to the bottom of the horizontal track.

[0019] Further defined, the leveling block includes an adjusting support, a wedge-shaped adjusting block, and adjusting feet;

[0020] The adjustable foot is connected to the bottom of the horizontal track, the adjustable support is located directly below the adjustable foot, the adjustable foot is connected to the adjustable support, and the wedge-shaped adjusting block is disposed between the adjustable foot and the adjustable support.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model optimizes the structure of the horizontal axis of the scanning frame, enabling the guide rail to connect with multiple sequentially spliced ​​horizontal segments. This allows existing high-precision processing equipment to perform high-precision processing on the horizontal segments and the docking reference structure, thereby ensuring the accuracy of the multiple sequentially connected horizontal segments and the accuracy of the connection with the guide rail. This meets the high-precision processing requirements of horizontal axes of scanning frames of different lengths. The structure is simple, meets the processing and testing accuracy requirements of large and ultra-large scanning frame horizontal axes, reduces processing difficulty and cost, facilitates disassembly and transportation, and enables the high-precision use of scanning frame horizontal axes, improving production efficiency and ensuring accurate and reliable antenna testing.

[0023] 2. This utility model uses precision machining equipment to perform precision machining on the reference positioning strips in each horizontal segment, achieving high-precision installation of the reference guide rail and guide rack, while ensuring the installation accuracy of the auxiliary positioning strips and the auxiliary guide rail, thus guaranteeing high-precision antenna testing.

[0024] 3. This utility model can simultaneously perform precision machining on the docking reference plate in each horizontal segment using precision machining equipment, ensuring the connection accuracy of the two horizontal segments. It also improves the high-precision machining of the reference positioning strips in two adjacent horizontal segments, thereby ensuring the machining accuracy of the two horizontal segments that are connected in sequence. Furthermore, by setting up support beams, the structural strength of the docking reference plate is improved, further enhancing the machining accuracy of the docking reference plate, reducing machining difficulty and cost, and ensuring machining reliability. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the high-precision antenna test scanning frame of this utility model.

[0026] Figure 2 This is a horizontal segmented structural diagram of the present invention;

[0027] Figure 3 This is a horizontally segmented cross-sectional view of the present invention;

[0028] Figure 4 for Figure 3 Enlarged diagram of part A in the middle;

[0029] Figure 5 for Figure 1 Enlarged diagram of section B;

[0030] Figure 6 This is a horizontal axis structural diagram of the high-precision antenna test scanning frame of this utility model;

[0031] Figure 7 This is a schematic diagram showing the connection status of the three horizontal segments of this utility model;

[0032] In the diagram, 10-guide rail; 11-reference guide rail; 12-auxiliary guide rail; 20-horizontal segment; 21-horizontal track; 22-sleeper beam; 23-positioning processing strip; 24-reference positioning strip; 25-auxiliary positioning strip; 26-first horizontal segment; 27-second horizontal segment; 28-third horizontal segment; 30-connection reference structure; 31-connection reference plate; 32-locking mechanism; 33-positioning mechanism; 34-seam pin; 35-seam pin hole; 36-support beam; 40-guide rack; 41-guide rail positioning groove; 42-guide rail tightening groove; 43-trapezoidal tightening block; 44-rack positioning groove; 50-horizontal adjusting block; 51-adjusting support; 52-wedge adjusting block; 53-adjusting foot; 60-rotation mechanism; 61-longitudinal movement mechanism; 62-vertical movement mechanism; 63-lateral movement mechanism. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Example 1

[0038] refer to Figure 1 The high-precision antenna test scanning frame mainly includes a rotation mechanism 60 connected to the antenna, a longitudinal movement mechanism 61 that drives the rotation mechanism 60 to move horizontally in the longitudinal direction, a vertical movement mechanism 62 that drives the longitudinal movement mechanism 61 to move vertically in the vertical direction, and a transverse movement mechanism 63 that drives the vertical movement mechanism 62 to move horizontally in the transverse direction. The transverse movement mechanism 63 includes a transverse movement drive and a horizontal axis. The transverse movement drive cooperates with the horizontal axis to drive the vertical movement mechanism 62 to move according to the test requirements.

[0039] This invention provides a high-precision horizontal axis for an antenna test scanning frame, comprising a guide rail 10 and multiple sequentially connected horizontal segments 20. The length range of a single horizontal segment 20 is determined according to the machining dimensions of the precision machining equipment, and the number of horizontal segments 20 is determined according to the length range of a single horizontal segment 20 and the length of the horizontal axis of the antenna test scanning frame. Adjacent horizontal segments 20 are connected by a docking reference structure 30, which facilitates precision machining of the two connected horizontal segments 20 by the precision machining equipment. This ensures the machining accuracy of a single horizontal segment 20 while ensuring that the machining reference of two adjacent horizontal segments 20 is consistent, and ensures a high-precision connection between the guide rail 10 and the multiple machined horizontal segments 20. This improves the overall machining accuracy of the horizontal axis of the antenna test scanning frame, reduces machining difficulty and cost, and simultaneously meets the accuracy requirements of antenna testing.

[0040] For details, please refer to Figure 2 The horizontal segment 20 includes two horizontal rails 21 and a sleeper beam 22 connecting the two horizontal rails 21. The two horizontal rails 21 are arranged in parallel. In order to ensure the parallelism of the two horizontal rails 21, the two horizontal rails 21 are connected by the sleeper beam 22. The preferred connection method is to weld them together with a circumferential weld. The horizontal rails 21 and the sleeper beam 22 are welded into an integral structure to improve the overall structural strength.

[0041] Preferably, the sleeper beam 22 is vertically connected to the horizontal track 21, which reduces the welding difficulty and further improves the overall structural strength; there are two guide rails 10, and the guide rails 10 are set one-to-one with the horizontal track 21.

[0042] When two adjacent horizontal segments 20 are connected, the ends of the two horizontal rails 21 in one horizontal segment 20 are connected to the ends of the two horizontal rails 21 in another horizontal segment 20 through the docking reference structure 30, so as to ensure a high-precision connection between the two adjacent horizontal segments 20.

[0043] When precision machining the horizontal track 21, the upper end face of the horizontal track 21 is precision machined to ensure the installation accuracy of the guide slide rail 10 and the individual horizontal track 21. The guide slide rail 10 is set along the length direction of the horizontal track 21. The docking reference structure 30 can ensure the machining accuracy between two adjacent horizontal segments 20, as well as the accuracy after disassembly and assembly between the horizontal segments 20. This ensures that after each horizontal segment 20 is machined, the guide slide rail 10 can be connected with multiple horizontal tracks 21 in sequence during on-site installation, meeting the requirements for high-precision antenna testing.

[0044] To further explain, in order to avoid reducing the structural strength of the horizontal track 21 by directly machining the upper surface of the horizontal track 21, and to ensure the reliable connection of the guide rail 10, the horizontal segment 20 also includes a positioning machining strip 23. The positioning machining strip 23 is set between the horizontal track 21 and the guide rail 10 along the length direction of the horizontal track 21, which makes the machining of the installation end face of the guide rail 10 on the horizontal track 21 more reliable. Through precision machining, when two adjacent horizontal segments 20 are connected, the two positioning machining strips 23 on the same side are aligned, and both positioning machining strips 23 are located above the docking reference structure 30, ensuring structural strength while ensuring the high-precision installation of the guide rail 10.

[0045] The guide rail 10 and the positioning processing strip 23 can be connected by connecting bolts, and the positioning processing strip 23 can be connected to the upper end face of the horizontal rail 21 by welding to ensure structural strength and facilitate processing.

[0046] refer to Figure 3 and Figure 4 To further ensure installation accuracy, the guide rail 10 includes a reference guide rail 11 and an auxiliary guide rail 12, which are arranged in parallel. The positioning processing strip 23 includes a reference positioning strip 24 and an auxiliary positioning strip 25. By precision machining the reference positioning strip 24, the installation positions of the reference guide rail 11 and the reference positioning strip 24 are made more accurate. Based on the installed reference guide rail 11, the auxiliary guide rail 12 and the auxiliary positioning strip 25 are installed according to the distance between the reference guide rail 11 and the auxiliary guide rail 12, ensuring the installation accuracy of the guide rail 10 and the horizontal rail 21 and improving installation efficiency.

[0047] For details, please refer to Figure 4 The reference positioning strip 24 is precision machined to obtain a guide rail positioning groove 41 and a guide rail tightening groove 42 parallel to the guide rail positioning groove 41; wherein, the guide rail positioning groove 41 is an L-shaped structure, the guide rail tightening groove 42 is a trapezoidal structure, the bottom width of the guide rail tightening groove 42 is smaller than the top width of the guide rail tightening groove 42, preferably the guide rail tightening groove 42 is a right trapezoidal structure, and the right angle waist of the guide rail tightening groove 42 is close to the horizontal end of the guide rail positioning groove 41 in the length direction.

[0048] Correspondingly, a guide rail positioning groove 41 can be opened on the auxiliary positioning strip 25. During use and installation, one side of the reference guide rail 11 contacts the vertical end face of the guide rail positioning groove 41, the bottom surface of the reference guide rail 11 contacts the horizontal end face of the guide rail positioning groove 41, and the other side of the reference guide rail 11 extends to the top of the guide rail tightening groove 42 and cooperates with the guide rail tightening groove 42 through the trapezoidal tightening block 43. By adjusting the distance between the trapezoidal tightening block 43 and the bottom of the guide rail tightening groove 42, the trapezoidal tightening block 43 cooperates with the guide rail positioning groove 41 to accurately and reliably install the reference guide rail 11. Then, the auxiliary guide rail 12 and the auxiliary positioning strip 25 can be installed according to the installation position of the reference guide rail 11.

[0049] Further restrictions, see reference Figure 5 In order to ensure high-precision machining of horizontal segments 20 and high-precision reliable connection between two adjacent horizontal segments 20, the docking reference structure 30 includes a docking reference plate 31, a locking mechanism 32 and a positioning mechanism 33.

[0050] The number of docking reference plates 31 is two. The docking reference plates 31 are connected to one end of the horizontal segment 20. During connection, the opposite ends of the two horizontal segments 20 are docked with the two docking reference plates 31. The two docking reference plates 31 are accurately and reliably aligned and positioned by the positioning mechanism 33. Then, the two positioned docking reference plates 31 are reliably connected by the locking mechanism 32 to avoid shaking, thereby enabling high-precision installation and high-precision processing.

[0051] Specifically, the ends of the two horizontal rails 21 in the horizontal segment 20 are connected to the docking reference plate 31 by welding with an annular weld. At this time, the positioning processing strip 23 in the horizontal segment 20 extends to the top of the docking reference plate 31. The positioning processing strip 23 is welded to the docking reference plate 31 to ensure a stable and reliable connection. Preferably, the height of the docking reference plate 31 is the same as the height of the horizontal rail 21. The two ends of the docking reference plate 31 in the length direction extend to the outer side of the corresponding horizontal rail 21. The docking surface of the docking reference plate 31 is precision machined to ensure that its surface is smooth and meets the perpendicularity requirements with the horizontal rail 21, thereby ensuring that the two docking reference plates 31 can be docked with high precision.

[0052] To avoid displacement deviation and reduced accuracy when the two docking reference plates 31 are connected by the locking mechanism 32, the docking surfaces of the docking reference plates 31 are positioned by the positioning mechanism 33.

[0053] The positioning mechanism 33 can be positioned by a pin and a pin hole, in which a pin is provided on the mating surface of one mating reference plate 31 and a pin hole is provided on the mating surface of the other mating reference plate 31, thereby achieving precise mating; or it can be positioned by a stepped hole and a stepped block.

[0054] Preferably, after the two docking reference plates 31 are docked, a saddle pin hole 35 can be opened. The axis of the saddle pin hole 35 is located between the docking surfaces of the two docking reference plates 31. That is, a saddle pin half hole is opened on a single docking reference plate 31. The axis of the saddle pin hole 35 is parallel to the docking surface of the docking reference plate 31. Saddle pins 34 are spaced along the periphery of the docking reference plates 31, so that a complete saddle pin hole 35 is obtained after the two docking reference plates 31 are docked. By cooperating with the saddle pin hole 35 and the saddle pin 34, the displacement of the two docking reference plates 31 in each direction in the vertical plane is restricted. In addition, the locking mechanism 32 is used to restrict the displacement of the two docking reference plates 31 in the lateral direction, so as to ensure the accuracy and reliability of the connection between the two horizontal segments 20.

[0055] To further explain, in order to avoid local bending deformation of the mating surface of the mating reference plate 31 during the finishing process, it is preferable to arrange multiple support beams 36 between the connecting surface of the mating reference plate 31 and the adjacent sleeper beams 22. The support beams 36 are perpendicular to the mating reference plate 31, and the multiple support beams 36 are equally spaced along the length direction of the mating reference plate 31 to improve the structural strength of the mating reference plate 31, ensure the accuracy of the processing, and thus ensure the installation accuracy and processing accuracy of the horizontal segment 20.

[0056] For further explanation, please refer to Figure 6 The horizontal axis of the high-precision antenna test scanning frame also includes multiple horizontal adjustment blocks 50. The multiple horizontal adjustment blocks 50 are spaced apart along the length of the horizontal track 21. The horizontal adjustment blocks 50 are connected to the bottom of the horizontal track 21, which facilitates the adjustment of the horizontality of the horizontal track 21 during installation.

[0057] Specifically, the horizontal adjustment block 50 includes an adjustment support 51, a wedge-shaped adjustment block 52, and an adjustment foot 53. The adjustment foot 53 is connected to the adjustment support 51 and to the bottom of the horizontal track 21, preferably by welding. The adjustment support 51 is located below the adjustment foot 53. The wedge-shaped adjustment block 52 is positioned between the adjustment foot 53 and the adjustment support 51. A vertical adjustment hole is provided on the adjustment foot 53, and adjustment grooves are provided on both the wedge-shaped adjustment block 52 and the adjustment support 51. During installation, an adjustment bolt is passed through the adjustment groove and the adjustment hole. When adjustment is needed, the wedge-shaped adjustment block 52 is moved back and forth along the length of the adjustment groove to change the height between the adjustment foot 53 and the adjustment support 51, facilitating adjustment.

[0058] To further explain, the horizontal axis of the high-precision antenna test scanning frame also includes a guide rack 40, which facilitates the lateral movement drive to move along the horizontal axis. The guide rack 40 is set parallel to the horizontal track 21, and the reference positioning bar 24 has a rack positioning groove 44 with an L-shaped structure. The connecting end of the guide rack 40 contacts the vertical end face of the rack positioning groove 44, the bottom surface of the guide rack 40 contacts the horizontal end face of the rack positioning groove 44, and the meshing end of the guide rack 40 is opposite to the auxiliary positioning bar 25, which facilitates cooperation with the lateral movement drive.

[0059] Working principle:

[0060] Specifically, when machining horizontal segment 20, each horizontal segment 20 can be individually finished.

[0061] To improve machining accuracy, when machining multiple horizontal segments 20, it is preferable to use one horizontal segment 20 as the machining reference, connect one horizontal segment 20 to be machined, and then perform finishing machining, so as to ensure that the two horizontal segments 20 are connected through the docking reference structure 30 during finishing machining.

[0062] refer to Figure 7 Specifically, taking three level segments 20 as an example, the three level segments 20 are the first level segment 26, the second level segment 27, and the third level segment 28.

[0063] S1. The bottom surfaces of the adjusting feet 53 in the first horizontal segment 26 and the second horizontal segment 27 are precision machined so that the bottom surfaces of each adjusting foot 53 are located on the same plane.

[0064] S2. The mating surfaces of the first horizontal segment 26 and the second horizontal segment 27 are precision machined to ensure that the form and position tolerances of the mating surfaces are controlled within the range of IT6-IT7. Then, the two mating reference plates 31 in the first horizontal segment 26 and the second horizontal segment 27 are aligned, and threaded connection holes are opened along the thickness direction of the two mating reference plates 31. Then, the two mating reference plates 31 are locked with locking threads.

[0065] Among them, the locking thread is usually made of high-strength bolts with a strength grade of not less than 8.8, and the diameter of the locking thread is not less than M16.

[0066] S3. Make a seam pin hole 35 on the two locking reference plates 31, and then fit the seam pin 34 with the seam pin hole 35 to avoid the first horizontal section 26 and the second horizontal section 27 from being offset during the processing.

[0067] S4. Guide rail positioning groove 41, guide rail clamping groove 42 and rack positioning groove 44 are obtained by precision machining on the reference positioning bar 24 in the first horizontal section 26. Then, guide rail positioning groove 41 is obtained by precision machining on the auxiliary positioning bar 25, thus completing the precision machining of the first horizontal section 26.

[0068] S5. Using the guide rail positioning groove 41, guide rail tightening groove 42 and rack positioning groove 44 in the first horizontal section 26 as references, the reference positioning strip 24 in the second horizontal section 27 is precision machined to obtain the guide rail positioning groove 41, guide rail tightening groove 42 and rack positioning groove 44; the auxiliary positioning strip 25 in the second horizontal section 27 is precision machined to obtain the guide rail positioning groove 41, thus completing the precision machining of the second horizontal section 27.

[0069] S6. Remove the first horizontal section 26, perform fine machining on the mating surface of the other end of the second horizontal section 27 that is connected to the reference plate 31, perform fine machining on the bottom surface of the adjusting foot 53 in the third horizontal section 28, and perform fine machining on the mating surface of one end of the third horizontal section 28 that is connected to the reference plate 31.

[0070] S7. Align the docking reference plate 31 at the other end of the second horizontal segment 27 with the docking reference plate 31 at one end of the third horizontal segment 28, and then open threaded connection holes along the thickness direction of the two docking reference plates 31. Then, use locking threads to lock the two docking reference plates 31.

[0071] S8. Make a seam pin hole 35 on the two locking reference plates 31, and then fit the seam pin 34 with the seam pin hole 35.

[0072] S9. Using the guide rail positioning groove 41, guide rail tightening groove 42 and rack positioning groove 44 in the second horizontal section 27 as references, the reference positioning strip 24 in the third horizontal section 28 is precision machined to obtain the guide rail positioning groove 41, guide rail tightening groove 42 and rack positioning groove 44; the auxiliary positioning strip 25 in the third horizontal section 28 is precision machined to obtain the guide rail positioning groove 41, thus completing the precision machining of the third horizontal section 28.

[0073] If there are more horizontal segments 20, then the previous horizontal segment 20 is used as the machining reference to perform fine machining on the next horizontal segment 20 to ensure machining accuracy.

[0074] In use, multiple horizontal segments 20 are connected sequentially through the docking reference structure 30 at the test site. The positioning mechanism 33 is used to achieve precise docking of the two docking reference plates 31, which can achieve H7 / G6 level fit accuracy. Then, the locking mechanism 32 is used to connect them, thereby ensuring the installation accuracy of multiple horizontal segments 20.

[0075] Then, the reference guide rail 11 is placed in the guide rail positioning groove 41 on the reference positioning bar 24. By adjusting the cooperation between the trapezoidal clamping block 43 and the guide rail clamping groove 42, the reference guide rail 11 is reliably positioned. Then, the reference guide rail 11 is connected to the reference positioning bar 24 by bolts. Subsequently, the auxiliary guide rail 12 is placed in the guide rail positioning groove 41 on the auxiliary positioning bar 25 and connected to the auxiliary positioning bar 25 by bolts.

[0076] The guide rack 40 is then fitted with the rack positioning groove 44 and connected to the reference positioning strip 24 by connecting bolts to complete the installation.

[0077] For the horizontal axis of the high-precision antenna test scanning frame composed of four horizontal segments of 20, the actual test results show that the repeatability of the entire horizontal axis is within 0.02mm and the positioning accuracy is within 0.03mm, which fully meets the requirements of high-precision antenna testing.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A horizontal axis for a high-precision antenna test scanning frame, characterized in that, It includes a guide rail (10) and a plurality of sequentially connected horizontal segments (20), adjacent horizontal segments (20) are connected by a docking reference structure (30), and the guide rail (10) is arranged on top of the plurality of sequentially connected horizontal segments (20) along the length direction of the horizontal segments (20).

2. The horizontal axis of the high-precision antenna test scanning frame according to claim 1, characterized in that, The horizontal segment (20) includes two horizontal rails (21) and a sleeper beam (22) connecting the two horizontal rails (21). The two horizontal rails (21) are arranged in parallel, and the sleeper beam (22) is perpendicularly connected to the horizontal rails (21). The docking reference structure (30) is set at the end of the horizontal rail (21), and the guide slide rail (10) is set along the length direction of the horizontal rail (21). The guide slide rail (10) is detachably connected to the upper end face of the horizontal rail (21).

3. The horizontal axis of the high-precision antenna test scanning frame according to claim 2, characterized in that, The horizontal segment (20) also includes a positioning processing strip (23), which is arranged between the horizontal track (21) and the guide slide rail (10) along the length direction of the horizontal track (21). The guide slide rail (10) is detachably connected to the upper end face of the horizontal track (21) through the positioning processing strip (23). The docking reference structure (30) is located above the positioning processing strip (23).

4. The horizontal axis of the high-precision antenna test scanning frame according to claim 3, characterized in that, The guide rail (10) includes a reference guide rail (11) and an auxiliary guide rail (12), the reference guide rail (11) and the auxiliary guide rail (12) are arranged in parallel, and the positioning processing strip (23) includes a reference positioning strip (24) and an auxiliary positioning strip (25). The reference positioning bar (24) is provided with a guide rail positioning groove (41) and a guide rail tightening groove (42) parallel to the guide rail positioning groove (41). The guide rail tightening groove (42) is located on one side of the guide rail positioning groove (41). The guide rail positioning groove (41) is an L-shaped structure, and the guide rail tightening groove (42) is a trapezoidal structure. One side of the reference guide rail (11) is in contact with the vertical end face of the guide rail positioning groove (41), and the bottom surface of the reference guide rail (11) is in contact with the horizontal end face of the guide rail positioning groove (41). The other side of the reference guide rail (11) is engaged with the guide rail tightening groove (42) through a trapezoidal tightening block (43). The auxiliary positioning bar (25) is provided with a guide rail positioning groove (41), and the auxiliary guide rail (12) cooperates with the auxiliary positioning bar (25) through the guide rail positioning groove (41).

5. The horizontal axis of the high-precision antenna test scanning frame according to claim 4, characterized in that, The docking reference structure (30) includes a docking reference plate (31), a locking mechanism (32), and a positioning mechanism (33). There are two docking reference plates (31). The positioning mechanism (33) is set on the docking surface of the docking reference plate (31). The connecting surface of the docking reference plate (31) is connected to the end of the horizontal rail (21). The docking reference plate (31) is set perpendicular to the horizontal rail (21). The two docking reference plates (31) are connected by a locking mechanism (32). The positioning processing strip (23) is located on the upper end surface of the docking reference plate (31) and is connected to the docking reference plate (31).

6. The horizontal axis of the high-precision antenna test scanning frame according to claim 5, characterized in that, The docking reference structure (30) also includes a plurality of support beams (36), which are connected between the docking reference plate (31) and the adjacent sleeper beams (22). The support beams (36) between the docking reference plate (31) and the adjacent sleeper beams (22) are spaced apart along the length of the sleeper beams (22).

7. The horizontal axis of the high-precision antenna test scanning frame according to claim 5 or 6, characterized in that, The positioning mechanism (33) includes a seam pin (34) and a seam pin hole (35). The seam pin hole (35) is opened between two adjacent docking reference plates (31), and the two adjacent docking reference plates (31) are engaged by the seam pin (34).

8. The horizontal axis of the high-precision antenna test scanning frame according to claim 7, characterized in that, The horizontal axis of the high-precision antenna test scanning frame also includes a guide rack (40), which is set parallel to the horizontal track (21). The reference positioning bar (24) has a rack positioning groove (44) which is L-shaped. The connecting end of the guide rack (40) is in contact with the vertical end face of the rack positioning groove (44), the bottom surface of the guide rack (40) is in contact with the horizontal end face of the rack positioning groove (44), and the meshing end of the guide rack (40) is opposite to the auxiliary positioning bar (25).

9. The horizontal axis of the high-precision antenna test scanning frame according to claim 8, characterized in that, The horizontal axis of the high-precision antenna test scanning frame also includes multiple horizontal adjustment blocks (50), which are spaced apart along the length of the horizontal track (21) and connected to the bottom of the horizontal track (21).

10. The horizontal axis of the high-precision antenna test scanning frame according to claim 9, characterized in that, The horizontal adjustment block (50) includes an adjustment support (51), a wedge-shaped adjustment block (52), and an adjustment foot (53); The adjusting foot (53) is connected to the bottom of the horizontal track (21), the adjusting support (51) is located directly below the adjusting foot (53), the adjusting foot (53) is connected to the adjusting support (51), and the wedge-shaped adjusting block (52) is disposed between the adjusting foot (53) and the adjusting support (51).

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