Antenna cover inspection apparatus

Abstract

The application relates to an antenna cover detection device which comprises a support base, a clamping mechanism, a driving assembly and a radial run-out detection assembly; the support base is used for fixing and supporting the radial run-out detection assembly, the clamping mechanism and the driving assembly; the clamping mechanism comprises a clamping assembly which is movably connected with the support base and is used for axis rotation relative to the support base; the clamping mechanism further comprises a supporting assembly which is fixedly connected with the support base and is used for supporting the antenna cover axis arranged vertically; the clamping mechanism further comprises a dynamic vacuum assembly which is fixedly connected with the support base and is used for communication with the supporting assembly; the supporting assembly is provided with an air flow channel used for communication between the antenna cover and the dynamic vacuum assembly; the driving assembly is used for fixed connection with the support base and is used for driving the axis rotation of the clamping assembly; and the radial run-out detection assembly is used for sliding relative to the support base and is used for detecting the radial run-out of the workpiece on the clamping mechanism. The application has the effect of detecting the radial run-out degree of the antenna cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radome radial runout detection, in particular to a radome detection device. BACKGROUND

[0002] The radome is a structure that protects the antenna system from the external environment. Outdoor antennas are usually placed in the open air and directly subjected to the invasion of natural phenomena such as storms, snow, dust and solar radiation, resulting in reduced antenna accuracy, shortened service life and poor working reliability, so the radome is needed for protection.

[0003] For the above prior art, the inventor believes that the radome is an obstacle in front of the antenna, which will absorb and reflect the antenna radiation wave, change the free space energy distribution of the antenna, and to some extent affect the electrical performance of the antenna, especially the reflection of the radome wall and the diffraction of the uneven part will cause the main lobe electric axis of the antenna to deviate, thereby producing aiming error. SUMMARY

[0004] In order to detect the radial runout position of the radome wall, the present application provides a radome detection device.

[0005] The radome detection device provided by the present application adopts the following technical scheme:

[0006] A radome detection device, comprising a support base, a clamping mechanism, a driving assembly and a radial runout detection assembly; the support base is used to fixedly support the radial runout detection assembly, the clamping mechanism and the driving assembly; the clamping mechanism comprises a clamping component which is movably connected with the support base and is used to rotate about the axis relative to the support base, and the clamping component is used to abut against the inner wall of the radome and drive the radome to rotate about the axis; the clamping mechanism further comprises a support component which is fixedly connected with the support base and is used to support the vertical arrangement of the axis of the radome, and the support component is used to abut against the inner wall of the radome; the clamping mechanism further comprises a dynamic vacuum assembly which is fixedly connected with the support base and is used to communicate with the support component, and the support component is provided with an airflow channel for communicating the inside of the radome with the dynamic vacuum assembly; the driving assembly is used to fixedly connect with the support base and drive the clamping component to rotate about the axis; the radial runout detection assembly is used to slide relative to the support base and detect the radial circular runout of each part of the workpiece on the clamping mechanism.

[0007] By adopting the above technical scheme, the radome is buckled on the support component, so that the axis of the radome is vertically arranged, and the clamping component abuts against the inner wall of the radome, the position and attitude of the radome are stabilized by abutting against the radome, at this time the clamping component is driven to rotate about the axis by the driving assembly, and the radome rotating about the axis is detected by the radial runout detection assembly, so as to know whether the detected radome is qualified.

[0008] Optionally, the clamping assembly comprises a positioning cylinder, an adjusting sleeve in sliding connection with the positioning cylinder, an abutting member and a power member for driving the adjusting sleeve to slide; the positioning cylinder is arranged in rotational connection with the support base and forms a variable-diameter side wall on the side wall, the variable-diameter side wall having a variable outer diameter along a sliding direction of the adjusting sleeve; the abutting member is located between the variable-diameter side wall and the positioning cylinder and is arranged to abut on the variable-diameter side wall and move; the adjusting sleeve is provided with a sliding channel for accommodating the abutting member and allowing the abutting member to extend out of the adjusting sleeve.

[0009] By adopting the above technical solution, the bottom opening of the radome is sleeved on the positioning cylinder, the adjusting sleeve is driven to slide by the power member, the abutting member located between the adjusting sleeve and the positioning cylinder moves in the horizontal direction due to the variable-diameter side wall, that is, the abutting member can extend out of the adjusting sleeve through the sliding channel and abut on the inner wall of the radome, thereby abutting the radome and achieving the purpose of fixing the radome.

[0010] Optionally, the positioning cylinder and the support assembly are fixedly connected through two coaxially arranged bearings, and a compensation elastic member is arranged between inner rings of the two bearings for supporting the inner rings of the two bearings.

[0011] By adopting the above technical solution, the bearings can reduce the radial runout when the positioning cylinder rotates, and reduce the deviation of the radome detection result caused by the assembly error of the positioning cylinder; at the same time, the compensation elastic member can compensate the axial runout and deviation of the inner rings of the bearings, thereby reducing the influence of the bearing structure and assembly error on the radome detection result.

[0012] Optionally, the support assembly comprises a support rod, a support table and a support disc; the support rod is arranged in connection with the dynamic vacuum assembly and is fixed relative to the support base; the support table is fixedly connected to an end of the support rod and is arranged to support an inner top end of the radome; and the support disc is fixedly connected to the support rod between the support table and the clamping assembly and is arranged to support an inner middle segment of the radome.

[0013] By adopting the above technical solution, the support assembly supports the upper and middle segments of the radome, which further reduces the influence of the radome assembly error on the radome detection result compared with the form of fixing the radome by the clamping assembly.

[0014] Optionally, the support assembly comprises a support rod, a support table and a support disc; the support rod is arranged in connection with the dynamic vacuum assembly and is fixed relative to the support base; the support table is arranged in sliding connection with an end of the support rod and is arranged to support an inner top end of the radome; a supporting elastic member is fixedly connected to the support rod and arranged to support the support table; and the support disc is fixedly connected to the support rod between the support table and the clamping assembly and is arranged to support an inner middle segment of the radome.

[0015] By adopting the technical scheme, the support table and the support rod are in sliding connection, and the support table is supported by the top support elastic member, so that the support assembly can meet the support and fixing requirements of antenna covers of different sizes, and the support assembly can stably and effectively support and fix antenna covers of different sizes, thereby improving the applicability.

[0016] Optionally, the outer diameter of the variable-diameter side wall linearly decreases in the direction of the top end of the outer radial positioning cylinder (72).

[0017] By adopting the technical scheme, the power member drives the adjusting sleeve to move in one direction, so that the abutting member is exposed outside the adjusting sleeve, and the antenna cover is fixed; or the adjusting sleeve is moved in the other direction, so that the abutting member is retracted inside the adjusting sleeve.

[0018] Optionally, the positioning cylinder is coaxially sleeved on the support rod and is used for axial rotation relative to the support rod, the inner wall of the positioning cylinder is provided with a positioning guide structure extending in the direction of the support rod, and the support rod is provided with a positioning guide sleeve matched with the positioning guide structure and used for being axially clamped with the positioning guide structure.

[0019] By adopting the technical scheme, the cooperation of the positioning guide structure and the positioning guide sleeve makes the axial rotation of the positioning cylinder more stable, reduces the axis jumping of the positioning cylinder during the axial rotation, and further reduces the influence of the axis jumping on the detection result of the antenna cover.

[0020] Optionally, the contour of the abutting member includes a spherical shape.

[0021] By adopting the technical scheme, the spherical abutting member can more stably slide with the adjusting sleeve and be extended outside the adjusting sleeve or be retracted under the action of the variable-diameter side wall, so that the length of the abutting member extending outside the adjusting sleeve is in a linear relationship with the sliding path of the adjusting sleeve, the operator can control the abutting force of the abutting member on the antenna cover, the possibility of the antenna cover being cracked by the abutting member is reduced, the possibility of the abutting member being stuck is also reduced, and the working stability is improved.

[0022] Optionally, the driving assembly includes an oil cylinder fixedly connected to the positioning cylinder, a piston rod of the oil cylinder is fixedly connected to the adjusting sleeve, and the oil cylinder has a plurality of oil cylinders and is uniformly distributed in the circumferential direction.

[0023] By adopting the technical scheme, the oil cylinder is widely available and easy to maintain, and the plurality of oil cylinders uniformly distributed in the circumferential direction can make the sliding of the adjusting sleeve more stable, so that the adjusting sleeve moves synchronously at all positions, and the possibility of the axis of the adjusting sleeve deviating is reduced, that is, the possibility of the abutting force on the bottom opening of the antenna cover being uneven is reduced.

[0024] Optionally, a dynamic vacuum assembly fixedly connected with the support base and used for communicating with the support assembly is further included, and the support assembly is provided with an airflow channel used for communicating the inside of the radome and the dynamic vacuum assembly.

[0025] By adopting the technical scheme, after the radome is fixed by the clamping assembly, the dynamic vacuum assembly is started, the inside space of the radome is vacuumized by the dynamic vacuum assembly, the dynamic vacuum assembly is always kept working, the radome is stably kept in the current state by the pressure difference between the inside and outside of the radome, and the stability of the posture of the radome during detection is further improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The radome is buckled on the support assembly, the axis of the radome is vertically arranged, the clamping assembly is tightly abutted against the inner wall of the radome, the position and posture of the radome are stabilized by abutting against the radome, the dynamic vacuum assembly is started, the inside space of the radome is vacuumized by the dynamic vacuum assembly, the dynamic vacuum assembly is always kept working, the radome is stably kept in the current state by the pressure difference between the inside and outside of the radome, the clamping assembly is driven to rotate around the axis by the driving assembly, and the radome rotating around the axis is detected by the radial runout detection assembly, so that whether the detected radome is qualified or not is known.

[0028] 2. The bearing can reduce the radial runout when the positioning cylinder rotates, reduce the deviation of the radome detection result caused by the assembly error of the positioning cylinder, and compensate the axial runout and deviation of the inner ring of the bearing, so that the influence of the bearing structure and assembly error on the radome detection result is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of an embodiment.

[0030] Figure 2 is a schematic view of an embodiment for showing the structure of the support assembly.

[0031] Figure 3 is a schematic view of an embodiment for showing the installation position of the top supporting elastic member.

[0032] Figure 4 is a schematic view of an embodiment for showing the structure of the clamping assembly.

[0033] Figure 5 is a schematic view of an embodiment for showing the position of the power member.

[0034] Figure 6 is Figure 5 is a schematic view of an embodiment for showing the position of the abutting member.

[0035] Figure 7 is a schematic diagram for representing the position of the compensation elastic member in the embodiment.

[0036] Figure 8 is a schematic diagram for representing the structure of the driving assembly in the embodiment.

[0037] The label is explained: 1, support base; 2, radial runout detection assembly; 21, vertical linear module; 22, rotating module; 23, transverse linear module; 24, laser probe; 3, clamping mechanism; 4, dynamic vacuum assembly; 5, support assembly; 51, support table; 511, flange joint; 52, support rod; 521, air extraction hole; 522, cap; 523, limiting cylinder; 53, support disc; 54, top support elastic member; 55, positioning guide sleeve; 551, positioning guide groove; 5111, upper pipe section; 5112, disc section; 5113, lower pipe section; 6, driving assembly; 61, gear; 62, gear ring; 63, motor; 7, clamping assembly; 71, adjusting sleeve; 711, sliding channel; 712, positioning guide structure; 72, positioning cylinder; 721, positioning groove; 73, abutting member; 74, connecting table; 75, power member; 8, bearing; 81, compensation elastic member; 9, cavity. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art under the premise of understanding the inventive concept of the present application all belong to the scope of protection of the present application.

[0039] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, motion condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0040] In order to facilitate the understanding of the radome detection device provided by the embodiments of the present application, the application scenarios thereof are first described. The radome detection device provided by the embodiments of the present application is used in the radial round runout detection of a radome, and is aimed at detecting the contour of the radome, so as to obtain the radial runout data of the external contour of the radome, screen out non-compliant radomes, and reduce the influence of the contour defects of the radome on the antenna signal transmission or reception effect.

[0041] The embodiments of the present application disclose a radome detection device, which is described with reference to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of an embodiment;Figure 2 is a schematic diagram for showing the structure of the support assembly 5. The antenna cover detection device comprises a support base 1, a radial run-out detection assembly 2, a clamping mechanism 3, a driving assembly 6 and a dynamic vacuum assembly 4. The support base 1 is used for fixing and supporting the radial run-out detection assembly 2, the clamping mechanism 3, the driving assembly 6 and the dynamic vacuum assembly 4. The clamping mechanism 3 is used for fixing and supporting the antenna cover to be detected. The radial run-out detection assembly 2 is used for detecting the radial run-out of the antenna cover placed on the clamping mechanism 3. The dynamic vacuum assembly 4 is continuously working to suck the inside space of the antenna cover to enhance the connection strength between the antenna cover and the clamping mechanism 7, so that the antenna cover can be stably connected with the clamping mechanism 7.

[0042] In the embodiment, the support base 1 is a frame-shaped table body. When the above structure is assembled, the radial run-out detection assembly 2 is fixed on the tabletop of the table body, the clamping mechanism 3 is located on the tabletop and is adapted to the radial run-out detection assembly 2, the driving assembly 6 is fixed on the tabletop and is adapted to the clamping mechanism 3, and the dynamic vacuum assembly 4 is fixed in the inside of the table body and is adapted to the clamping mechanism 3.

[0043] In a preferred embodiment, the clamping mechanism 7 has two, and the radial run-out detection assembly 2 is located on the support base 1 between the two clamping mechanisms 7. Specifically, the radial run-out detection assembly 2 comprises a vertical linear module 21 fixedly connected to the support base 1, a rotating module 22 fixedly connected to the vertical linear module 21, a horizontal linear module 23 fixedly connected to the rotating module 22, and a laser probe 24 fixedly connected to the horizontal linear module 23. The vertical linear module 21 drives the rotating module 22 to move vertically, the rotating module 22 drives the horizontal linear module 23 to rotate around the vertical axis, and the horizontal linear module 23 drives the laser probe 24 to move horizontally. Through the laser probe 24, the radial run-out of the antenna cover placed on the clamping mechanism 3 can be detected.

[0044] Continuing to refer to Figure 1 and Figure 2 , the dynamic vacuum assembly 4 comprises a vacuum pump fixedly connected to the support base 1. The vacuum pump is adapted to the clamping mechanism 3 through a pipeline and is used for continuously sucking the inside of the antenna cover. By generating a pressure difference between the inside and outside of the antenna cover, the antenna cover is pressed on the clamping mechanism 3, so that the stable connection between the antenna cover and the clamping mechanism 3 is realized.

[0045] It should be understood that the above-mentioned vacuum pump is one specific embodiment of the dynamic vacuum assembly 4. In the embodiment of the present application, other ways can also be used to generate a pressure difference between the inside and outside of the antenna cover.

[0046] Referring to Figure 2 and Figure 3 , Figure 3is a schematic diagram showing the installation position of the top supporting elastic member 54 in the embodiment. The clamping assembly 7 comprises a supporting assembly 5 fixedly connected with the support base 1 and used for supporting the radome axis arranged vertically, and the supporting assembly 5 is used for abutting against the inner wall of the radome.

[0047] Illustratively, the supporting assembly 5 comprises a supporting table 51, a supporting rod 52 and a supporting disc 53. The supporting rod 52 is used for being connected with the dynamic vacuum assembly 4 and fixed relative to the support base 1; the supporting table 51 is used for being fixedly connected at the end of the supporting rod 52 and used for supporting the inner top end of the radome; and the supporting disc 53 is used for being fixedly connected on the supporting rod 52 between the supporting table 51 and the clamping assembly 7 and used for supporting the inner middle section of the radome.

[0048] Specifically, the bottom end of the supporting rod 52 is open and hollow, and the sidewall of the supporting rod 52 is provided with a gas extraction hole 521 penetrating the sidewall of the supporting rod 52 along the radial direction. The gas extraction hole 521 is located on the supporting rod 52 between the supporting table 51 and the supporting disc 53, and the bottom end of the supporting rod 52 is fixedly connected with the support base 1 and fixedly connected with the dynamic vacuum assembly 4. Since the supporting rod 52 is hollow, an airflow channel for connecting the radome and the dynamic vacuum assembly 4 is formed in the supporting rod 52. The dynamic vacuum assembly 4 can extract vacuum on the radome placed on the supporting rod 52 through the airflow channel and the gas extraction hole 521, so as to achieve the purpose of generating pressure difference between the inside and outside of the radome, and the radome can be pressed tightly on the supporting table 51 and the supporting disc 53 by the external air pressure.

[0049] In a preferred embodiment, the outer walls of the supporting table 51 and the supporting disc 53 are both covered with deformable rubber sleeves, and the outer diameter of the supporting table 51 is smaller than that of the supporting disc 53. Since the outer walls of the supporting table 51 and the supporting disc 53 are both covered with deformable rubber sleeves, and the gas extraction hole 521 is located between the supporting table 51 and the supporting disc 53, the air tightness of the area between the supporting table 51 and the supporting disc 53 will be enhanced with the increase of the pressure difference between the inside and outside of the radome, that is, the dynamic vacuum assembly 4 can more stably exert the fixing and limiting effect on the radome, and the possibility of affecting the detection result by the movement of the radome is reduced.

[0050] In a preferred embodiment, the support table 51 is slidingly connected to the top end of the support rod 52, and a top support elastic member 54 is fixedly connected to the support rod 52 for supporting the support table 51. Specifically, the top end of the support rod 52 is reduced in diameter, and a limiting cylinder 523 for accommodating the top support elastic member 54 is coaxially fixedly connected to the reduced diameter section. A flange joint 511 capable of sliding along the axial direction of the support rod 52 is coaxially sleeved on the reduced diameter section. The flange joint 511 includes a disc section 5112 arranged vertically along the axis, an upper pipe section 5111 fixedly connected to the top surface of the disc section 5112, and a lower pipe section 5113 fixedly connected to the bottom surface of the disc section 5112. The top support elastic member 54 in this embodiment is a top support spring, the top end of which is sleeved on the lower pipe section 5113, the bottom end is placed in the limiting cylinder 523, and the support table 51 is coaxially sleeved on the upper pipe section 5111 and is bolted to the disc section 5112. Since radomes of the same shape are classified into various types according to their length and diameter, the above arrangement can make the support assembly 5 meet the support requirements of radomes of more different lengths and diameters. After the radome is placed on the support assembly 5, the support table 51 can be moved downward after abutting against the top end of the inner wall of the radome by pressing the radome, until the side wall of the support disc 53 abuts against the middle section of the inner wall of the radome. At this time, the support table 51 and the support disc 53 can still support and fix the radome, improving the applicability of the support assembly 5.

[0051] In a preferred embodiment, the support disc 53 is coaxially sleeved on the support rod 52, and a nut is threadedly connected to the support rod 52 to fix the support disc 53 on the support rod 52. The detachable connection of the support disc 53 through the nut can meet the detection requirements of radomes of more sizes, further improving the applicability.

[0052] It should be understood that in addition to the above installation forms, other embodiments can also be provided, for example, the support disc 53 is coaxially fixedly connected to the support rod 52, and the support table 51 is fixedly connected to the top end of the support rod 52. The selection of fixed connection can make the support table 51 and the support rod 52, and the support disc 53 and the support rod 52 have strong connection strength, so that the support table 51 and the support disc 53 can withstand the pressure generated by the operation of the dynamic vacuum assembly 4, and the support assembly 5 can work stably.

[0053] Referring to Figure 4 and Figure 5 , Figure 4 is a schematic view of the structure of the clamping assembly 7 in the embodiment; Figure 5is a schematic diagram for representing the position of the power element 75 in the embodiment. The clamping mechanism 3 further comprises a clamping assembly 7 movably connected with the support base 1 and used for rotating with the axis relative to the support base 1, the clamping assembly 7 being used for abutting against the inner wall of the radome and driving the radome to rotate with the axis. Specifically, the clamping assembly 7 comprises a positioning cylinder 72, an adjusting sleeve 71 slidably connected with the positioning cylinder 72, and a power element 75 driving the adjusting sleeve 71 to slide. The positioning cylinder 72 is used for rotatingly connecting with the support base 1.

[0054] Specifically, the support base 1 is provided with a cavity 9 for accommodating the clamping assembly 7, the cavity 9 is fixedly connected with a bearing 8, the outer ring of the bearing 8 is fixedly connected with the support base 1, and the inner ring of the bearing 8 is fixedly connected with the positioning cylinder 72 coaxially. The power element 75 in the embodiment is an oil cylinder, the cylinder body of the oil cylinder is fixedly connected with the positioning cylinder 72, and the piston rod of the oil cylinder penetrates through the positioning cylinder 72 and extends to above the positioning cylinder 72 and is fixedly connected with the adjusting sleeve 71. The fixed connection improves the connection strength between the piston rod of the oil cylinder and the adjusting sleeve 71, reduces the possibility that the adjusting sleeve 71 is offset and affects other components and finally causes the axis of the radome to be offset, and further affects the final measurement result, with the increase of the use times.

[0055] In other embodiments, the top end of the piston rod of the oil cylinder is fixedly connected with a connecting table 74, the adjusting sleeve 71 is provided with a connecting groove for accommodating the connecting table 74, and the connecting table 74 is bolted in the connecting groove. The oil cylinder is connected with the adjusting sleeve 71 through the bolt and the connecting table 74, the attitude of the adjusting sleeve 71 can be finely adjusted by tightening or loosening the bolt, the adjusting sleeve 71 can move vertically in the attitude with the axis vertical, the possibility that the adjusting sleeve 71 is offset and affects other components and finally causes the axis of the radome to be offset is reduced, and the accuracy of the detection result is ensured.

[0056] In a preferred embodiment, there are three oil cylinders and they are uniformly distributed in the circumferential direction, and the three oil cylinders synchronously work to drive the adjusting sleeve 71 to move vertically. The three oil cylinders uniformly distributed in the circumferential direction can make the adjusting sleeve 71 move vertically more stably, and make the displacement amounts of each part of the adjusting sleeve 71 tend to be the same, and the possibility that the adjusting sleeve 71 is offset and affects other components and finally causes the axis of the radome to be offset is reduced, so as to affect the final measurement result.

[0057] It should be understood that the oil cylinder is only a specific embodiment for realizing the sliding of the adjusting sleeve 71, and other structures such as a pneumatic cylinder and a linear module can also be used in the embodiments of the present application, and only the minimum number of the power element 75 is one.

[0058] Referring to Figure 4 and Figure 6 , Figure 6 is Figure 5The clamping assembly 7 further comprises a pressing member 73 between the adjusting sleeve 71 and the positioning cylinder 72. The positioning cylinder 72 has a variable-diameter side wall on the side wall, the diameter of which varies along the sliding direction of the adjusting sleeve 71. The adjusting sleeve 71 is provided with a sliding channel 711 for accommodating the pressing member 73 and for the pressing member 73 to protrude out. The pressing member 73 is located between the variable-diameter side wall and the positioning cylinder 72 and is used to abut on the variable-diameter side wall to move. As the pressing member 73 moves on the variable-diameter side wall, the pressing member 73 can be exposed from the sliding channel 711.

[0059] Specifically, the top end side wall of the positioning cylinder 72 is a tapered surface forming a variable-diameter side wall, that is, the outer diameter of the positioning cylinder 72 linearly decreases towards the top end. The bottom end opening of the adjusting sleeve 71 is buckled on the top end of the positioning cylinder 72, and the sliding channel 711 penetrates the side wall of the adjusting sleeve 71 in the radial direction. The pressing member 73 in the embodiment is a steel ball (or a rubber ball or a plastic ball). The pressing member 73 is located in the space between the adjusting sleeve 71 and the variable-diameter side wall at the top end of the positioning cylinder 72, and part of the solid body of the pressing member 73 can protrude out of the side wall of the adjusting sleeve 71 through the sliding channel 711. As the adjusting sleeve 71 moves downward, the pressing member 73 will be exposed to the outside of the adjusting sleeve 71 through the sliding channel 711 under the abutment of the variable-diameter side wall at the top end of the positioning cylinder 72, and will be tightly abutted on the inner wall of the radome, finally realizing the clamping and fixing of the radome. Conversely, when the adjusting sleeve 71 moves upward, the variable-diameter side wall no longer abuts against the pressing member 73 to move it outward through the sliding channel 711, that is, the pressing member 73 abutted on the inner wall of the radome can move along the sliding channel 711 to the variable-diameter side wall, so the radome can be smoothly removed from the clamping assembly 7.

[0060] With reference to Figure 4 and Figure 6 , the positioning cylinder 72 is coaxially sleeved on the support rod 52 and is used to rotate on the axis relative to the support rod 52. The inner wall of the positioning cylinder 72 is provided with a positioning guide structure 712 protruding towards the support rod 52. The support rod 52 is provided with a positioning guide sleeve 55 adapted to the positioning guide structure 712 and used to be clamped with the positioning guide structure 712 in the axial direction.

[0061] Specifically, the positioning guide sleeve 55 is coaxially fixedly connected on the support rod 52, and the positioning cylinder 72 is coaxially sleeved on the positioning guide sleeve 55. The side wall of the positioning guide sleeve 55 is provided with a V-shaped groove arranged around. The positioning guide structure 712 in the embodiment is a steel nail adapted to the V-shaped groove. The head of the steel nail is fixedly connected with the positioning cylinder 72, and the sharp end of the steel nail protrudes into the V-shaped groove and is adapted to the V-shaped groove. The connection between the positioning cylinder 72 and the positioning guide sleeve 55 is realized through the above-mentioned positioning guide structure 712 and the V-shaped groove, so that the outer side of the positioning cylinder 72 is supported by the bearing 8, and the inner side is supported by the positioning guide sleeve 55, thereby being able to stably rotate on the axis, reducing the possibility of axial deviation of the positioning cylinder 72, and ensuring the detection accuracy of the radome.

[0062] In other embodiments, the positioning guide structure 712 is a long straight rod fixedly connected at one end to the positioning cylinder 72 and abutting against the V-shaped groove at the other end.

[0063] It should be understood that the above-mentioned V-shaped groove is only one embodiment of the positioning guide sleeve 55 that can be adapted to the positioning guide structure 712, axially clamped and circumferentially freely slid. In the embodiments of the present application, other forms can also be used, for example, a circular ring is coaxially fixed on the positioning guide sleeve 55, and the positioning guide structure 712 is a rod arranged on the circular ring.

[0064] Referring to Figure 5 and Figure 7 , Figure 7 is a schematic view of the structure of the compensation elastic member 81 in the embodiments. The positioning cylinder 72 and the support assembly 5 are fixedly connected through two coaxially arranged bearings 8, and the inner rings of the two bearings 8 are provided with a compensation elastic member 81 for supporting the inner rings of the two bearings 8.

[0065] Specifically, the compensation elastic member 81 in the embodiments is a bellows spring, which abuts against the inner rings of the two bearings 8 at the same time. The bellows spring compensates for the axial gap between the bearings 8 caused by the coaxial arrangement of the bearings 8, which not only reduces the influence of the structure and assembly errors of the bearings 8 on the measurement results of the radome, but also reduces the influence of the axial gap of the bearings 8 on the perpendicularity of the radome, so that the measurement results of the radome are closer to the true data.

[0066] It should be understood that the use of the bellows spring to compensate for the axial gap of the bearings 8 is only one specific embodiment of the compensation elastic member 81. Other forms, such as improving assembly accuracy, replacing the bellows spring with a leaf spring, or directly connecting the positioning cylinder 72 with the support base 1 or connecting them through a slide rail, are all within the concept of the present application and fall within the protection scope of the present application.

[0067] Referring to Figure 8 , Figure 8 is a schematic view of the structure of the drive assembly 6 in the embodiments. The drive assembly 6 is used to be fixedly connected with the support base 1 and to drive the clamping assembly 7 to rotate around the axis. Specifically, the drive assembly 6 includes a motor 63 fixedly connected with the support base 1, a gear 61 coaxially fixedly connected on the output shaft of the motor 63, and a tooth ring 62 coaxially fixedly connected on the positioning cylinder 72. The motor 63 drives the gear 61 to rotate around the axis, and then drives the tooth ring 62 to drive the positioning cylinder 72 to rotate, so as to achieve the purpose of driving the clamping assembly 7 to rotate around the axis of the radome.

[0068] In one feasible solution, the driving assembly 6 comprises a linear module, a rack fixedly connected with the linear module, and a gear ring 62 coaxially fixedly connected with the positioning cylinder 72, the rack is engaged with the gear ring 62, the rack is driven to move by the linear module, the rack drives the gear ring 62 to rotate, and finally the fixed-axis rotation of the radome is realized.

[0069] In summary, the preferred but not the only explanation of the principle of the preferred embodiment of the application is as follows: when the external contour of the radome needs to be detected, the radome is sleeved on the support rod 52, at this time, the inner wall top end of the radome abuts against the support table 51, then the radome and the support table 51 are pressed downward, and the downward pressing action is stopped when the inner wall middle section of the radome abuts against the side wall of the support disc 53. At this time, the oil cylinder serving as the power piece 75 is driven, the oil cylinder drives the adjusting sleeve 71 to move downward, while the adjusting sleeve 71 moves downward, the abutting piece 73 moves downward under the abutting action of the self gravity and the top wall of the sliding channel 711, at the same time, the abutting piece 73 moves in the sliding channel 711 due to the abutting of the variable-diameter side wall, when the abutting piece 73 is exposed from the sliding channel 711 and abuts against the radome, the oil cylinder stops working and keeps the extension rod in the current state. At this time, the dynamic vacuum assembly 4 is started, the dynamic vacuum assembly 4 sucks the air in the radome through the hollow air flow channel in the support rod 52 and the air suction hole 521 opened on the side wall of the support rod 52, a pressure difference is caused between the inside and outside of the radome, the external air pressure will press the radome tightly on the clamping assembly 7, at this time, the pressure on the radome can be removed, the radome can still keep the state of being fixed and supported by the clamping assembly 7, then the positioning cylinder 72 is driven to rotate by the driving assembly 6, the radome will rotate with the positioning cylinder 72, at this time, the external contour of the radome is detected by the radial runout detection assembly 2. After the detection is completed, the dynamic vacuum assembly 4 stops working, the oil cylinder drives the adjusting sleeve 71 to move upward, at the same time, the space between the variable-diameter side wall and the inner wall of the adjusting sleeve 71 becomes larger, the abutting piece 73 is no longer abutted against the inner wall of the radome, with the lapse of time, the pressure difference between the inside and outside of the radome will gradually decrease until zero, at this time, the radome can be removed, and the process of radome detection is completed.

[0070] The above are the preferred embodiments of the application, but do not limit the protection scope of the application, therefore: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. An antenna cover detection apparatus, characterized by: The antenna cover detection device comprises a support base (1), a clamping mechanism (3), a driving assembly (6) and a radial run-out detection assembly (2); the support base (1) is used for fixing and supporting the radial run-out detection assembly (2), the clamping mechanism (3) and the driving assembly (6); the clamping mechanism (3) comprises a clamping assembly (7) which is movably connected with the support base (1) and is used for rotating about the support base (1); the clamping assembly (7) is used for abutting against the inner wall of the antenna cover and driving the antenna cover to rotate about the axis; the clamping mechanism (3) further comprises a supporting assembly (5) which is fixedly connected with the support base (1) and is used for supporting the antenna cover whose axis is vertically arranged; the supporting assembly (5) is used for abutting against the inner wall of the antenna cover; the driving assembly (6) is fixedly connected with the support base (1) and is used for driving the clamping assembly (7) to rotate about the axis; the radial run-out detection assembly (2) is used for sliding relative to the support base (1) and is used for detecting the radial run-out of the workpiece at each position on the clamping mechanism (3). The antenna cover detection device further comprises a dynamic vacuum assembly (4) which is fixedly connected with the support base (1) and is used for communicating with the supporting assembly (5); the supporting assembly (5) is provided with an airflow channel which is used for communicating the inside of the antenna cover with the dynamic vacuum assembly (4). The clamping assembly (7) comprises a positioning cylinder (72), an adjusting sleeve (71) which is slidingly connected with the positioning cylinder (72), an abutting piece (73) and a power piece (75) which drives the adjusting sleeve (71) to slide; the positioning cylinder (72) is rotatably connected with the support base (1) and forms a variable-diameter side wall on the side wall, the diameter of the variable-diameter side wall changes along the sliding direction of the adjusting sleeve (71); the abutting piece (73) is located between the variable-diameter side wall and the positioning cylinder (72) and is used for moving on the variable-diameter side wall; the adjusting sleeve (71) is provided with a sliding channel (711) which is used for accommodating the abutting piece (73) and is used for allowing the abutting piece (73) to extend out. The positioning cylinder (72) and the supporting assembly (5) are fixedly connected through two coaxially arranged bearings (8); the inner rings of the two bearings (8) are provided with a compensation elastic piece (81) which is used for supporting the inner rings of the two bearings (8).

2. The antenna cover detection apparatus of claim 1, wherein: The supporting assembly (5) comprises a supporting rod (52), a supporting table (51) and a supporting disc (53); the supporting rod (52) is used for being connected with the dynamic vacuum assembly (4) and is fixed relative to the support base (1); the supporting table (51) is slidingly connected at the end of the supporting rod (52) and is used for supporting the inner top end of the antenna cover; the supporting rod (52) is fixedly connected with a supporting elastic piece (54) which is used for supporting the supporting table (51); the supporting disc (53) is fixedly connected on the supporting rod (52) between the supporting table (51) and the clamping assembly (7) and is used for supporting the inner middle section of the antenna cover.

3. The antenna cover detection apparatus of claim 1, wherein: The support assembly (5) comprises a support rod (52), a support table (51) and a support disc (53); the support rod (52) is used for being connected with the dynamic vacuum assembly (4) and being fixed relative to the support base (1); the support table (51) is used for being fixedly connected at the end of the support rod (52) and being used for supporting the inner top end of the radome; and the support disc (53) is used for being fixedly connected on the support rod (52) between the support table (51) and the clamping assembly (7) and being used for supporting the inner middle section of the radome.

4. The antenna cover detection apparatus of claim 1, wherein: The outer radial positioning cylinder (72) of the variable-diameter side wall linearly decreases in the direction of the top end.

5. The antenna cover detection apparatus according to claim 1 or 4, characterized by: The positioning cylinder (72) is coaxially sleeved on the support rod (52) and is used for being axially rotated relative to the support rod (52); the inner wall of the positioning cylinder (72) is provided with a positioning guide structure (712) extending towards the support rod (52); and the support rod (52) is provided with a positioning guide sleeve (55) adapted with the positioning guide structure (712) and used for being axially clamped with the positioning guide structure (712).

6. The antenna cover inspection apparatus according to any one of claims 1 to 4, characterized by: The driving assembly (6) comprises oil cylinders fixedly connected on the positioning cylinder (72); the piston rod of the oil cylinder is fixedly connected with the adjusting sleeve (71); and the oil cylinder is multiple and uniformly distributed in the circumferential direction.

7. The antenna cover inspection apparatus according to any one of claims 1 to 4, characterized by: The contour of the abutting piece (73) comprises a spherical shape.

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