Three-dimensional microwave near-field scanning frame

Abstract

The utility model relates to the technical field of scanning frames, and provides a three-dimensional microwave near-field scanning frame, which comprises a mounting frame, a scanning table, a movable frame, a fixed frame, a lifting frame, an angle adjusting mechanism and a probe, and is characterized in that the scanning table is fixedly arranged on the mounting frame; the movable frame is fixedly arranged on the mounting frame in a sliding manner, and the fixed frame is fixedly arranged on the movable frame in a sliding manner; the angle adjusting mechanism is fixedly arranged between the lifting frame and the probe and can drive the probe to rotate relative to the lifting frame; and the probe is positioned above the scanning table. By arranging the angle adjusting mechanism, the probe can be rotated to cooperate with three-dimensional translation of the moving frame, the fixed frame and the lifting frame, the moving requirement of the probe is met, and interference and collision between the device and an object to be detected are avoided, so that the scanning frame can comprehensively scan different objects to be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of scanning frames, in particular to a three-dimensional microwave near-field scanning frame. Background Art

[0002] Near-field microwave reflection technology has the advantages of high precision, high sensitivity, and rapid response, and has been widely used in the field of object scanning and detection. In order for the scanning probe to fully scan the object, a scanning frame is required to move the scanning probe in three dimensions.

[0003] The utility model with patent publication number CN204523405U discloses a three-dimensional scanning paint spotting machine. Before the workpiece with a three-dimensional surface structure is painted, the three-dimensional feeding mechanism drives the sensitive probe to move in a three-dimensional direction relative to the workbench. When the end of the sensitive probe just moves to the surface of the workpiece to be painted and contacts it, the trigger triggers the information storage device to record the coordinates of the end of the sensitive probe. The three-dimensional feeding mechanism continues to move along the preset route, thereby obtaining the coordinate information of multiple points on the surface of the workpiece to be painted. Furthermore, the information storage device is connected to an external control processing system, and a three-dimensional curved surface image of the workpiece surface is calculated based on the coordinate information. The sensitive probe is then disassembled and replaced with an external paint spotting mechanism. The control processing system controls the three-dimensional feeding mechanism to drive the paint spotting mechanism to paint according to the three-dimensional curved surface image. Therefore, the paint spotting mechanism can adjust the height at any time according to the shape of the workpiece surface, and the paint spotting uniformity is better and the paint spotting accuracy is higher.

[0004] In the above technical solution, in order to move the probe, a three-dimensional feeding mechanism consisting of an X-axis feeding assembly, a Y-axis feeding assembly and a Z-axis feeding assembly is set. However, since the three-dimensional feeding mechanism occupies a certain space, especially when scanning an object to be measured that is relatively large in specifications and complex in shape, the movement of the three-dimensional feeding mechanism will interfere with and collide with the object to be measured, resulting in the probe being unable to fully scan such an object to be measured. Utility Model Content

[0005] In view of this, the utility model proposes a three-dimensional microwave near-field scanning frame, which can perform three-dimensional movement and rotation of the probe, thereby meeting the movement requirements of the probe.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a three-dimensional microwave near-field scanning frame, including a mounting frame, a scanning platform, a mobile frame, a fixed frame, a lifting frame, an angle adjustment mechanism and a probe, wherein:

[0007] The scanning platform is fixedly arranged on the mounting frame;

[0008] The movable frame is fixedly arranged on the mounting frame in a slidable manner, the fixed frame is fixedly arranged on the movable frame in a slidable manner, and the lifting frame is fixedly arranged on the fixed frame in a slidable manner, and the sliding directions of the movable frame, the fixed frame and the lifting frame are perpendicular to each other;

[0009] The angle adjustment mechanism is fixedly arranged between the lifting frame and the probe, and can drive the probe to rotate relative to the lifting frame;

[0010] The probe is located above the scanning platform and is not coaxially arranged with the lifting frame.

[0011] On the basis of the above technical solution, preferably, the angle adjustment mechanism comprises a turntable, and the turntable comprises a fixed frame, a rotating table and a first screw, wherein:

[0012] The fixing frame is fixedly arranged on the lifting frame;

[0013] The rotating platform is rotatably disposed on the fixed frame and is fixedly connected to the probe;

[0014] The first screw rod is arranged through the fixing frame and is connected with the fixing frame by threaded cooperation, and the front end of the first screw rod is selectively abutted and fixed with the rotating platform.

[0015] More preferably, the angle adjustment mechanism further includes a displacer, which includes a base, a slide seat and a second screw, wherein:

[0016] The slide seat is slidably arranged on the base;

[0017] The second screw rod is disposed through the base and connected thereto by threaded engagement, and its front end is selectively abutted and fixed against the slide seat;

[0018] There are two displacers, one of which is a slide fixedly mounted on the lifting frame, the other is fixedly connected to the base on the other displacer, the other base is fixedly connected to the fixed frame, and the sliding directions of the two slides are perpendicular to each other and parallel to the horizontal plane.

[0019] More preferably, the angle adjustment mechanism further comprises an extension fixing frame, one end of which is fixedly disposed on the rotating table, the probe is fixedly disposed on one end of the extension fixing frame away from the rotating table, and a gap is provided between the probe and the peripheral side of the lifting frame.

[0020] On the basis of the above technical solution, preferably, the mounting frame includes a first frame body, a first screw rod, a first motor and a first guide rail, and the moving frame includes a second frame body and a first slider, wherein:

[0021] The first screw rod is rotatably disposed on the first frame;

[0022] The first motor is fixedly mounted on the first frame, and an output end thereof is coaxial with and fixedly connected to the first screw rod;

[0023] The first guide rail is fixedly arranged on the first frame;

[0024] The second frame is connected to the first screw rod through threaded matching;

[0025] The first sliding block is fixedly disposed on the second frame and is slidably connected to the first guide rail.

[0026] More preferably, the movable frame further comprises a second screw rod, a second motor and a second guide rail, and the fixed frame comprises a third frame body and a second slide block, wherein:

[0027] The second screw rod is rotatably disposed on the second frame;

[0028] The second motor is fixedly mounted on the second frame, and an output end thereof is coaxial with and fixedly connected to the second screw rod;

[0029] The second guide rail is fixedly arranged on the second frame;

[0030] The third frame is connected to the second screw rod through threaded matching;

[0031] The second sliding block is fixedly disposed on the third frame and is slidably connected to the second guide rail.

[0032] More preferably, the fixed frame further includes a third motor, a gear and a third slider, and the lifting frame includes a fourth frame body, a rack and a third guide rail, wherein:

[0033] The third motor is fixedly arranged on the third frame;

[0034] The gear is fixedly arranged on the output end of the third motor;

[0035] The third frame is a cylindrical structure, and the third sliding block is fixedly disposed in the third frame;

[0036] The fourth frame is disposed in the third frame;

[0037] The rack is fixedly arranged on the fourth frame and meshes with the gear;

[0038] The third guide rail is fixedly arranged on the fourth frame and is slidably connected with the third sliding block.

[0039] More preferably, the side of the first frame on which the first screw rod is disposed is perpendicular to the side of the first frame on which the first guide rail is disposed;

[0040] The third guide rail and the third sliding block are both provided with two, and the two side surfaces of the two third sliding blocks provided in the third frame are perpendicular to each other.

[0041] On the basis of the above technical solution, preferably, the scanning platform includes a hole plate and a plurality of scissor lifts, wherein:

[0042] The orifice plate is located below the probe and has a plurality of fixing holes evenly distributed inside the orifice plate;

[0043] The scissor lift is fixedly arranged between the orifice plate and the mounting frame.

[0044] More preferably, the scanning platform further comprises a fine-tuning seat and a clamping rod, wherein the fine-tuning seat comprises a positioning seat, an adjustment seat and a third screw, wherein:

[0045] The positioning seat is arranged on the top side of the orifice plate and is selectively fixedly connected to at least two of the fixing holes;

[0046] The adjusting seat is slidably arranged on the positioning seat;

[0047] The third screw rod is disposed through the positioning seat and is connected thereto by threaded engagement, and its front end is selectively abutted and fixed against the adjustment seat;

[0048] The clamping rod is fixedly arranged on the adjustment seat, and a side of the clamping rod close to the adjustment seat is vertical, and a top end of the clamping rod away from the adjustment seat is in an arc shape.

[0049] The three-dimensional microwave near-field scanning frame of the utility model has the following beneficial effects compared with the prior art:

[0050] (1) By setting an angle adjustment mechanism, the probe can be rotated to cooperate with the three-dimensional translation of the mobile frame, the fixed frame and the lifting frame, meet the movement requirements of the probe, and avoid interference and collision between the device and the object to be measured, so that the scanning frame can perform comprehensive scanning on different objects to be measured;

[0051] (2) By providing a displacement device, the position accuracy of the probe can be adjusted by utilizing the displacement device to move the probe over a short distance. By providing the lifting frame in a cylindrical third frame, the movement stability of the lifting frame can be improved.

[0052] (3) By setting a fine-tuning seat, the clamping rod can be moved to cooperate with the orifice plate to ensure the accuracy of the fixed position of the object to be measured. By setting a scissor lift, the angle of the orifice plate can be adjusted to meet the scanning requirements of different objects to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 It is a stereogram of the three-dimensional microwave near-field scanning frame of the utility model;

[0055] Figure 2 It is a three-dimensional diagram of the angle adjustment mechanism in the three-dimensional microwave near-field scanning frame of the utility model;

[0056] Figure 3 It is an exploded view of the angle adjustment mechanism in the three-dimensional microwave near-field scanning frame of the utility model;

[0057] Figure 4 It is a three-dimensional diagram of the first screw rod in the three-dimensional microwave near-field scanning frame of the utility model;

[0058] Figure 5 It is a stereoscopic diagram of the gear in the three-dimensional microwave near-field scanning frame of the utility model;

[0059] Figure 6 It is a three-dimensional diagram of the clamping rod in the three-dimensional microwave near-field scanning frame of the utility model;

[0060] Figure 7 This is a front view of the scissor-type lifter in the three-dimensional microwave near-field scanning frame of the utility model.

[0061] Among them: 1. Mounting frame; 11. First frame; 12. First screw rod; 13. First motor; 14. First guide rail; 2. Scanning table; 21. Orifice plate; 22. Scissor lifter; 23. Fine adjustment seat; 231. Positioning seat; 232. Adjustment seat; 233. Third screw rod; 24. Clamping rod; 201. Fixing hole; 3. Moving frame; 31. Second frame; 32. First slider; 33. Second screw rod; 34. Second motor; 35. Second guide rail; 4 , fixed frame; 41, third frame; 42, second slider; 43, third motor; 44, gear; 45, third slider; 5, lifting frame; 51, fourth frame; 52, rack; 53, third guide rail; 6, angle adjustment mechanism; 61, turntable; 611, fixed frame; 612, rotating table; 613, first screw; 62, shifter; 621, base; 622, slide; 623, second screw; 63, extension fixed frame; 7, probe. DETAILED DESCRIPTION

[0062] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0063] like Figure 1-7 As shown, the three-dimensional microwave near-field scanning frame of the utility model includes a mounting frame 1, a scanning platform 2, a moving frame 3, a fixed frame 4, a lifting frame 5, an angle adjustment mechanism 6 and a probe 7.

[0064] The mounting frame 1 is used to carry other components.

[0065] The scanning platform 2 is used to fix the object to be measured, and the scanning platform 2 is fixedly arranged on the mounting frame 1 .

[0066] The mobile frame 3, the fixed frame 4 and the lifting frame 5 are used to realize the three-dimensional movement of the probe 7. The mobile frame 3 is fixedly set on the mounting frame 1 in a slidable manner, the fixed frame 4 is fixedly set on the mobile frame 3 in a slidable manner, and the lifting frame 5 is fixedly set on the fixed frame 4 in a slidable manner, and the sliding directions of the mobile frame 3, the fixed frame 4 and the lifting frame 5 are perpendicular to each other.

[0067] The angle adjustment mechanism 6 is used to realize the rotation of the probe 7 . The angle adjustment mechanism 6 is fixedly arranged between the lifting frame 5 and the probe 7 , and can drive the probe 7 to rotate relative to the lifting frame 5 .

[0068] The probe 7 is used to scan the object to be tested. The probe 7 is located above the scanning platform 2 and is provided with a microwave signal transmitting and reflecting microwave signal receiving device to detect the shape or material information of the object to be tested. Figure 1 As shown, the movement of the movable frame 3, the fixed frame 4 and the lifting frame 5 can drive the probe 7 to move in three dimensions, so as to perform a comprehensive scan of the object to be measured. When the object to be measured is large in size and complex in shape, so that the probe 7 cannot complete the scanning of the object by translation, the angle adjustment mechanism 6 can be used to rotate the probe 7 to adjust the position of the probe 7 so that the probe 7 meets the position movement requirements required for scanning. Of course, the probe 7 is not coaxially arranged with the lifting frame 5, so that the probe 7 can be at different positions of the lifting frame 5 when the probe 7 is rotated.

[0069] like Figure 2 As shown, the angle adjustment mechanism 6 includes a rotating table 61 , a shifter 62 and an extension fixing frame 63 .

[0070] like Figure 3 As shown, the turntable 61 includes a fixed frame 611, a rotating platform 612 and a first screw 613, wherein the fixed frame 611 can be directly fixedly set on the lifting frame 5; the rotating platform 612 is rotatably set on the fixed frame 611, and can be directly fixedly connected to the probe 7; the first screw 613 is set through the fixed frame 611, and is connected thereto by threaded cooperation, and its front end is selectively abutted and fixed to the rotating platform 612; when the first screw 613 is loosened, the front end of the first screw 613 is separated from the rotating platform 612, so that the rotating platform 612 can be rotated with the fixed frame 611, and when the rotation position is suitable, the first screw 613 is tightened to allow its front end to abut and fix the rotating platform 612; in order to display the rotation angle of the probe 7, a scale can be set on the rotating platform 612.

[0071] like Figure 3 As shown, the displacer 62 includes a base 621, a slide 622 and a second screw 623, wherein the slide 622 is slidably set on the base 621, preferably by means of a dovetail groove and a dovetail slider; the second screw 623 is penetrated and set on the base 621, and is connected thereto by threaded cooperation, and its front end is selectively abutted and fixed to the slide 622; similarly to the above, when the second screw 623 is loosened, the front end of the second screw 623 is separated from the slide 622, so that the slide 622 can slide with the base 621, and when the sliding position is suitable, the second screw 623 is tightened so that its front end can abut and fix the slide 622.

[0072] like Figure 2As shown, two displacers 62 are provided and are arranged between the lifting frame 5 and the turntable 61. Therefore, the fixed frame 611 is not connected to the lifting frame 5, but one of the slides 622 is fixedly provided on the lifting frame 5, the other slide 622 is fixedly connected to the base 621 on the other displacer 62, the other base 621 is fixedly connected to the fixed frame 611, and the sliding directions of the two slides 622 are perpendicular to each other and parallel to the horizontal plane, so that before the scanner is used, the position accuracy of the probe 7 can be adjusted by slight movement of the displacer 62.

[0073] like Figure 2 As shown, the extension fixing frame 63 is used to allow the probe 7 to be arranged not coaxially with the lifting frame 5, and it is fixedly arranged between the probe 7 and the turntable 61. Therefore, the turntable 612 is not as connected to the probe 7. One end of the extension fixing frame 63 is fixedly arranged on the turntable 612, and the probe 7 is fixedly arranged at one end of the extension fixing frame 63 away from the turntable 612. A gap is arranged between the probe 7 and the peripheral side of the lifting frame 5.

[0074] The three-dimensional movement of the probe 7 by the movable frame 3, the fixed frame 4 and the lifting frame 5 is achieved in the following manner.

[0075] like Figure 4 As shown, the mounting frame 1 includes a first frame body 11, a first screw rod 12, a first motor 13 and a first guide rail 14, and the movable frame 3 includes a second frame body 31 and a first slider 32. The first screw rod 12 is rotatably arranged on the first frame body 11; the first motor 13 is fixedly arranged on the first frame body 11, and its output end is coaxial with and fixedly connected to the first screw rod 12. When the first motor 13 is started, the first screw rod 12 can be driven to rotate; the first guide rail 14 is fixedly arranged on the first frame body 11; the first slider 32 is fixedly arranged on the second frame body 31 and is slidably connected to the first guide rail 14; the second frame body 31 is connected to the first screw rod 12 by threaded cooperation. When the first screw rod 12 rotates, the second frame body 31 can be driven to move by utilizing this threaded cooperation and the sliding cooperation between the first guide rail 14 and the first slider 32, and the reciprocating sliding of the second frame body 31 can be realized by utilizing the forward and reverse rotation of the first motor 13; specifically, as Figure 1 As shown, the first screw rod 12 , the first motor 13 and the first guide rail 14 are disposed on both sides of the first frame 11 , and the first sliders 32 are disposed on both ends of the second frame 31 to ensure the movement stability of the second frame 31 .

[0076] like Figure 4 As shown, the moving frame 3 also includes a second screw rod 33, a second motor 34 and a second guide rail 35. Figure 5As shown, the fixed frame 4 includes a third frame body 41 and a second slider 42, wherein the second screw rod 33 is rotatably arranged on the second frame body 31; the second motor 34 is fixedly arranged on the second frame body 31, and its output end is coaxial with and fixedly connected to the second screw rod 33. When the second motor 34 is started, the second screw rod 33 is driven to rotate; the second guide rail 35 is fixedly arranged on the second frame body 31; the second slider 42 is fixedly arranged on the third frame body 41 and is slidably connected to the second guide rail 35; the third frame body 41 is connected to the second screw rod 33 by threaded cooperation. When the second screw rod 33 rotates, the third frame body 41 can be driven to move by utilizing this threaded cooperation and the sliding cooperation between the second guide rail 35 and the second slider 42, and the reciprocating sliding of the third frame body 41 can be realized by utilizing the forward and reverse rotation of the second motor 34; specifically, as Figure 4 As mentioned above, two second guide rails 35 may be provided and located on both sides of the second screw rod 33 , so that the third frame 41 can move more stably.

[0077] like Figure 5 As shown, the fixed frame 4 also includes a third motor 43, a gear 44 and a third slider 45, and the lifting frame 5 includes a fourth frame 51, a rack 52 and a third guide rail 53, wherein the third motor 43 is fixedly arranged on the third frame 41; the gear 44 is fixedly arranged on the output end of the third motor 43; the third frame 41 is a cylindrical structure, and the third slider 45 is fixedly arranged in the third frame 41; the fourth frame 51 is arranged in the third frame 41; the rack 52 is fixedly arranged on the fourth frame 51 and meshes with the gear 44; the third guide rail 53 is fixedly arranged on the fourth frame 51 and meshes with the gear 44; The third motor 43 is slidably connected to the third slider 45; when the third motor 43 is started, the gear 44 can be driven to rotate, so that the fourth frame 51 can be driven to slide by the meshing of the gear 44 and the rack 52 and the sliding of the third slider 45 and the third guide rail 53; the movement of the lifting frame 5 is realized by using the principle of tooth-slot meshing. If the threaded matching method is continued to be used, a motor needs to be set at the top of the third frame 41 or the fourth frame 51, which will increase the overall height of the device, thereby increasing the occupied space of the device. When this tooth-slot principle is used, not only a certain amount of space can be saved, such as Figure 1 As shown, a plate-like structure may be provided on the top side of the fourth frame 51. When the gear 44 and the rack 52 lose meshing control, causing the fourth frame 51 to slide down, the plate on the top of the fourth frame 51 may abut and collide with the third frame 41 to prevent the probe 7 from damaging the object to be measured.

[0078] In order to ensure the sliding stability of the second frame 31, Figure 4As shown, the side of the first frame 11 on which the first screw rod 12 is provided is perpendicular to the side on which the first guide rail 14 is provided; similarly, two third guide rails 53 and two third sliders 45 are provided, and the two side surfaces of the two third sliders 45 provided in the third frame 41 are perpendicular.

[0079] As a preferred embodiment, the scanning platform 2 includes a hole plate 21, a plurality of scissor lifts 22, a fine adjustment seat 23 and a clamping rod 24. Figure 1 As shown, the orifice plate 21 is located below the probe 7; the scissor lift 22 is fixedly arranged between the orifice plate 21 and the mounting frame 1, and the scissor lift 22 can be arranged at each of the four top corners of the bottom side of the orifice plate 21 to adjust the horizontality or inclination of the orifice plate 21 to meet the scanning requirements of the object; specifically, the scissor lift 22 is a prior art, such as Figure 7 As shown, it includes two plates, an X-shaped bracket between the two plates and a screw rod. When the screw rod is rotated, the X-shaped bracket can be pressed to change its angle, thereby adjusting the distance between the two plates.

[0080] like Figure 6 As shown, the fine-tuning seat 23 includes a positioning seat 231, an adjusting seat 232 and a third screw 233, wherein the positioning seat 231 is arranged on the top side of the orifice plate 21, and a plurality of fixing holes 201 are evenly distributed inside the orifice plate 21, and the positioning seat 231 is selectively fixedly connected to at least two of the fixing holes 201; the adjusting seat 232 is slidably arranged on the positioning seat 231; the third screw 233 is penetrated and arranged on the positioning seat 231, and is connected thereto by threaded cooperation, and its front end is selectively abutted and fixed to the adjusting seat 232; the shape and principle of the fine-tuning seat 23 are consistent with those of the displacer 62, that is, the position of the adjusting seat 232 is adjusted by rotating the third screw 233 and sliding the adjusting seat 232.

[0081] The clamping rod 24 is used to clamp and fix the object to be measured. The clamping rod 24 is fixedly arranged on the adjustment seat 232. By using the slidable fit of the adjustment seat 232 and the selection of the positioning seat 231 and the fixing hole 201, the clamping rod 24 can be fixedly installed at any position of the orifice plate 21; Figure 1 As shown, four clamping rods 24 are preferably provided and distributed in a circle to hold and fix the four vertices or four edges of the object to be measured; correspondingly, it is preferred that the side of the clamping rod 24 close to the adjustment seat 232 is vertical, and the top of the side away from the adjustment seat 232 is curved, so as to facilitate the object to be measured to be placed between the multiple clamping rods 24; Figure 6 As shown, a limiting strip may be provided on a side of the clamping rod 24 away from the adjusting seat 232 to be clamped and fixed to the object to be measured having the limiting groove.

[0082] The method of using the three-dimensional microwave near-field scanning frame of the utility model is as follows:

[0083] First, the object to be measured is fixed on the orifice plate 21 by using the clamping rod 24, and then the scissor lift 22 and the fine-tuning seat 23 are adjusted according to the scanning needs to adjust the fixed inclination angle and the accuracy of the fixed position of the object to be measured. Finally, the probe 7 is moved on the surface of the object to be measured by controlling the first motor 13, the second motor 34 and the third motor 43 to complete the scanning of the object to be measured. During this period, if the lifting frame 5 collides with the object to be measured during the movement, the fixed angle of the probe 7 can be adjusted by rotating the rotating table 612, and before scanning, the scanning frame can be calibrated by adjusting the shifter 62.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Three-dimensional microwave near-field scanning frame, characterized by: It comprises a mounting frame (1), a scanning platform (2), a moving frame (3), a fixed frame (4), a lifting frame (5), an angle adjustment mechanism (6) and a probe (7), wherein: The scanning platform (2) is fixedly arranged on the mounting frame (1); The movable frame (3) is fixedly arranged on the mounting frame (1) in a slidable manner, the fixed frame (4) is fixedly arranged on the movable frame (3) in a slidable manner, and the lifting frame (5) is fixedly arranged on the fixed frame (4) in a slidable manner, and the sliding directions of the movable frame (3), the fixed frame (4) and the lifting frame (5) are perpendicular to each other; The angle adjustment mechanism (6) is fixedly arranged between the lifting frame (5) and the probe (7), and is capable of driving the probe (7) to rotate relative to the lifting frame (5); The probe (7) is located above the scanning platform (2) and is not coaxially arranged with the lifting frame (5).

2. The three-dimensional microwave near-field scanning frame according to claim 1, characterized in that: The angle adjustment mechanism (6) comprises a rotating platform (61), wherein the rotating platform (61) comprises a fixed frame (611), a rotating platform (612) and a first screw rod (613), wherein: The fixing frame (611) is fixedly arranged on the lifting frame (5); The rotating platform (612) is rotatably disposed on the fixed frame (611) and is fixedly connected to the probe (7); The first screw rod (613) is disposed through the fixing frame (611) and is connected thereto by threaded engagement, and its front end is selectively abutted and fixed to the rotating platform (612).

3. The three-dimensional microwave near-field scanning frame according to claim 2, characterized in that: The angle adjustment mechanism (6) further comprises a displacer (62), wherein the displacer (62) comprises a base (621), a slide seat (622) and a second screw rod (623), wherein: The sliding seat (622) is slidably arranged on the base (621); The second screw rod (623) is disposed through the base (621) and is connected thereto by threaded engagement, and its front end is selectively abutted and fixed to the slide seat (622); Two displacers (62) are provided, one of the slide seats (622) is fixedly provided on the lifting frame (5), the other slide seat (622) is fixedly connected to the base (621) on the other displacer (62), the other base (621) is fixedly connected to the fixed frame (611), and the sliding directions of the two slide seats (622) are perpendicular to each other and parallel to the horizontal plane.

4. The three-dimensional microwave near-field scanning frame according to claim 3, characterized in that: The angle adjustment mechanism (6) further comprises an extension fixing frame (63), one end of which is fixedly arranged on the rotating platform (612), the probe (7) is fixedly arranged on one end of the extension fixing frame (63) away from the rotating platform (612), and a gap is arranged between the probe (7) and the peripheral side of the lifting frame (5).

5. The three-dimensional microwave near-field scanning frame according to claim 1, characterized in that: The mounting frame (1) comprises a first frame body (11), a first screw rod (12), a first motor (13) and a first guide rail (14); the moving frame (3) comprises a second frame body (31) and a first sliding block (32), wherein: The first screw rod (12) is rotatably mounted on the first frame (11); The first motor (13) is fixedly mounted on the first frame (11), and its output end is coaxially and fixedly connected to the first screw rod (12); The first guide rail (14) is fixedly arranged on the first frame (11); The second frame (31) is connected to the first screw rod (12) by threaded engagement; The first sliding block (32) is fixedly arranged on the second frame (31) and is slidably connected to the first guide rail (14).

6. The three-dimensional microwave near-field scanning frame according to claim 5, characterized in that: The movable frame (3) further comprises a second screw rod (33), a second motor (34) and a second guide rail (35); the fixed frame (4) comprises a third frame body (41) and a second slide block (42), wherein: The second screw rod (33) is rotatably mounted on the second frame (31); The second motor (34) is fixedly mounted on the second frame (31), and its output end is coaxially and fixedly connected to the second screw rod (33); The second guide rail (35) is fixedly arranged on the second frame (31); The third frame (41) is connected to the second screw rod (33) through threaded matching; The second sliding block (42) is fixedly arranged on the third frame (41) and is slidably connected to the second guide rail (35).

7. The three-dimensional microwave near-field scanning frame according to claim 6, characterized in that: The fixed frame (4) further comprises a third motor (43), a gear (44) and a third slider (45); the lifting frame (5) comprises a fourth frame body (51), a rack (52) and a third guide rail (53); wherein: The third motor (43) is fixedly arranged on the third frame (41); The gear (44) is fixedly arranged on the output end of the third motor (43); The third frame (41) is a cylindrical structure, and the third sliding block (45) is fixedly arranged in the third frame (41); The fourth frame (51) is arranged inside the third frame (41); The rack (52) is fixedly arranged on the fourth frame (51) and meshes with the gear (44); The third guide rail (53) is fixedly arranged on the fourth frame (51) and is slidably connected to the third sliding block (45).

8. The three-dimensional microwave near-field scanning frame according to claim 7, characterized in that: The side of the first frame (11) on which the first screw rod (12) is arranged is perpendicular to the side of the first frame (11) on which the first guide rail (14) is arranged; Two of the third guide rails (53) and two of the third sliding blocks (45) are provided, and two side surfaces of the two third sliding blocks (45) provided in the third frame (41) are perpendicular to each other.

9. The three-dimensional microwave near-field scanning frame according to claim 1, characterized in that: The scanning platform (2) comprises an aperture plate (21) and a plurality of scissor lifts (22), wherein: The orifice plate (21) is located below the probe (7) and has a plurality of fixing holes (201) evenly distributed inside the orifice plate; The scissor lift (22) is fixedly arranged between the orifice plate (21) and the mounting frame (1).

10. The three-dimensional microwave near-field scanning frame according to claim 9, characterized in that: The scanning platform (2) further comprises a fine-tuning seat (23) and a clamping rod (24), wherein the fine-tuning seat (23) comprises a positioning seat (231), an adjustment seat (232) and a third screw rod (233), wherein: The positioning seat (231) is arranged on the top side of the orifice plate (21) and is selectively fixedly connected to at least two of the fixing holes (201); The adjustment seat (232) is slidably arranged on the positioning seat (231); The third screw rod (233) is disposed through the positioning seat (231) and is connected thereto by threaded engagement, and its front end is selectively abutted and fixed to the adjustment seat (232); The clamping rod (24) is fixedly arranged on the adjustment seat (232), and the side of the clamping rod (24) close to the adjustment seat (232) is vertical, and the top end of the side away from the adjustment seat (232) is arc-shaped.

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