Apparatus and method for modular manufacturing of cable-membrane structure of membrane reflector antenna

Abstract

Disclosed in the present invention is an apparatus and method for the modular manufacturing of a cable-membrane structure of a membrane reflector antenna. The apparatus comprises a triangular cable net forming apparatus mounted on a workbench, wherein the triangular cable net forming apparatus is provided with a linear motion assembly, a planar motion assembly, a cantilever assembly and positioning pins; a cable net tension adjustment apparatus is mounted on the cantilever assembly; force measurement apparatuses are mounted on the positioning pins; a triangular cable net unit is wound around the positioning pins and is tensioned into a triangular shape; the workbench is provided with a distance measurement apparatus for measuring cable sections of the triangular cable net unit, and a cable pressing apparatus; and a membrane is bonded to the triangular cable net unit to form a modular triangular cable-membrane structure unit. By means of the present invention, the modular manufacturing of cable-membrane structure units can be carried out, thereby meeting requirements for interchangeability, and the manufacturing of a triangular cable net structure of any size and shape can be realized, such that the universality is strong; and integrally formed cable-membrane units having an ordered assembly and accurate unit shapes and sizes are formed.

Description

A thin film reflector antenna cable membrane structure modular manufacturing device and method TECHNICAL FIELD

[0001] The present application belongs to the technical field of thin film antennas, and relates to a thin film reflector antenna cable membrane structure modular manufacturing device and a modular manufacturing method. BACKGROUND

[0002] The thin film reflector antenna is a kind of high-precision reflector antenna, and its main structure is divided into a basic support structure, a cable net structure and a reflector. The cable net structure is divided into a front cable net, a rear cable net and a vertical cable, wherein a plurality of triangular structures are formed on the front net surface, the reflector is divided into a plurality of triangular membranes and laid on the front cable net surface, forming a cable membrane overall structure.

[0003] The cable membrane structure under the traditional concept needs to be manufactured separately. First, each cable segment is cut according to the designed cable segment length and cable internal tension, then the cable net is manually woven as a whole, and then the triangular membranes of the designed size are cut out. The triangular membranes are sequentially pasted on the basic cable net structure to complete the overall manufacturing of the cable membrane structure.

[0004] The current manufacturing method has many deficiencies. First, the cable membrane structure is a whole structure, and adjacent triangular membranes share a cable. When one cable segment or triangular membrane is replaced, all surrounding structures need to be disassembled, which seriously fails to meet the interchangeability requirement. Second, the number of cable segments in the cable net structure is large, and the cable net needs to be manually woven according to the cable net topological relationship. The process is messy and complicated. Third, the thin film shape needs to be cut into a designed triangular shape in advance, and then pasted on the cable net structure. Since the pasting of the electrode membrane is performed after the antenna basic cable net structure is built, and the pasting is performed in a suspended state, it is difficult to ensure uniform pasting of the adjacent edges of adjacent triangular membranes. The surface after pasting is difficult to ensure flatness and difficult to match the shape of the cable net. These defects cause the manufactured antenna prototype to deviate from the design result, which further brings inconvenience to the prototype experiment. Therefore, a manufacturing scheme needs to be proposed for the thin film reflector antenna to solve the above problems without switching the workbench. SUMMARY

[0005] To solve the above-mentioned defects in the prior art, the purpose of the present application is to provide a thin film reflector antenna cable membrane structure modular manufacturing device, which solves the problems of lack of interchangeability, complicated manufacturing process and poor manufacturing effect in the prior art.

[0006] The present application is realized by the following technical solutions.

[0007] In one aspect of the present application, a thin film reflector antenna cable membrane structure modular manufacturing device is provided, comprising:

[0008] a workbench for fixing the triangular cable net shaping device and positioning pins for tensioning the cables across the workbench;

[0009] a triangular cable net shaping device configured with a linear motion assembly, a planar motion assembly and a cantilever assembly for shaping the triangular cable net unit cables;

[0010] a triangular cable net unit tensioned into a tension-balanced triangular cable net by cables respectively wound around the positioning pins of the triangular cable net shaping device;

[0011] a cable net tension adjustment device fixed to the triangular cable net shaping device for providing traction and adjusting the tension of the triangular cable net unit cable net;

[0012] a force measuring device fixed to the workbench and the linear motion assembly of the triangular cable net shaping device respectively for measuring the cable tension in the X and Y directions of the workbench through force sensors;

[0013] a distance measuring device fixed to the workbench and the triangular cable net shaping device respectively for measuring the distance of the triangular cable net unit cable segment;

[0014] a cable pressing device for positioning and locking the cable on the cable ring of the triangular cable net unit cable net positioning pin;

[0015] a film and adhesive tape for pasting the finished triangular cable net unit to form a modular triangular cable membrane structure unit.

[0016] As a preferred embodiment, the workbench comprises a first table top and a third table top arranged in a stepped manner, and a second table top arranged below the front side of the first table top, the first table top is provided with a through hole and a strip-shaped long groove parallel to the X direction of the workbench, and the bottom of the workbench is provided with adjustable feet.

[0017] As a preferred embodiment, the linear motion assembly of the triangular cable net shaping device is fixed to the second table top of the workbench, located directly below and parallel to the groove; the planar motion assembly is fixed to the third table top of the workbench, the planar motion assembly is provided with a first sliding table, the planar motion assembly is connected perpendicularly to the cantilever assembly, and the cantilever assembly extends from the planar motion device and rests on the upper surface of the first table top of the workbench.

[0018] As a preferred embodiment, the planar motion assembly comprises a second sliding table, a horizontal shaft assembly, a pair of vertical shaft assemblies and a synchronous motion rod, the pair of vertical shaft assemblies are fixed parallel to the third table top of the workbench, and the direction is parallel to the Y direction of the workbench; the horizontal shaft assembly spans across the two vertical shaft assemblies, and the direction is perpendicular to the first vertical shaft assembly; the second sliding table is slidingly connected to the horizontal shaft assembly; and the synchronous motion rod is connected to the ends of the pair of vertical shaft assemblies.

[0019] As preferred, the cantilever assembly comprises a J-shaped extension member, the top plate of the J-shaped extension member is placed on the first table, the bottom plate is connected to the second slide of the planar motion assembly, the end of the top plate of the J-shaped extension member is provided with a fixing head, and a positioning pin for tensioning the rope is penetrated through the fixing head.

[0020] As preferred, the cable net tension adjusting device is arranged on one side of the cantilever assembly, the cable net tension adjusting device clamps the rope through the traction device and the second rope clip, and the rope is pulled along the Y direction of the workbench.

[0021] As preferred, the pair of force measuring devices are respectively provided with a force sensor and a positioning pin for tensioning the rope, the first force measuring device is located on the first table, and the second force measuring device is installed on the slide of the linear motion assembly; the first and second positioning pins are located on the top of the force measuring device, the first positioning pin is positioned and installed through the through hole of the first table, and the second positioning pin is limited in the strip-shaped long slot of the first table to limit the linear movement thereof.

[0022] As preferred, the distance measuring device comprises three pairs of distance sensors and stop blocks, the first distance sensor is installed on the first slide of the linear motion assembly, and the first stop block is fixed to the first force measuring device; the second and third distance sensors are arranged on the fixing head at the end of the cantilever assembly and do not interfere with each other, the second stop block is arranged on the front side edge of the first table and is parallel to the X direction of the workbench, and the third stop block is arranged on the left side edge of the first table and is parallel to the Y direction of the workbench; the lengths of the three rope segments of the triangular cable net unit are obtained by respectively measuring the distances between the distance sensors and the stop blocks.

[0023] As preferred, the rope of the triangular cable net unit is wound around the positioning pins in the form of external winding or cross winding.

[0024] In another aspect of the present application, a modular manufacturing method of the thin film reflector antenna cable film structure module manufacturing device is provided, comprising:

[0025] Adjusting the adjustable foot so that the workbench is in a horizontal state;

[0026] According to the measured data of the distance measuring device, the linear motion assembly and the planar motion assembly of the triangular cable net shaping device are controlled to move the second and third positioning pins together with the first positioning pin to adjust the lengths of the rope segments of the triangular cable net unit, so that the triangular cable net unit is shaped;

[0027] The rope is wound around the three positioning pins to form a triangular cable net;

[0028] The cable net tension adjusting device is controlled by the power source to tension and pull the triangular cable net unit, the lengths of the rope segments are determined according to the force sensor, the rope is positioned and locked on the rope ring of the cable net positioning pin through the rope pressing device;

[0029] Cut the excess rope heads of the rope at both ends, keep the tension state of the triangular net, and complete the production of the triangular net unit;

[0030] The triangular net unit produced is pasted to form a modular triangular net film structure unit. The present application has the following beneficial effects due to the above technical scheme:

[0032] 1. The triangular net film structure unit module produced by the method of the present application can be used to replace the electrode surface unit of the thin film reflector antenna. The electrode surface of the antenna is composed of multiple triangular net film structure units. When one of the triangular net film structure units is damaged, mismatched in size, loose, etc., the unit module needs to be replaced, realizing modular production and replacement.

[0033] 2. The multiple triangular net film structure units on the antenna electrode surface are different in shape and size. Using the method of the present application, only the linear motion assembly and the planar motion assembly need to be controlled to determine the triangular shape of different sizes. The present application has strong versatility.

[0034] 3. The triangular net film structure unit produced by the method of the present application uses three distance sensors to ensure the accuracy of the triangular shape in real time during production. The triangular shaping device can achieve the above beneficial effects. Two double-axis force sensors are used to ensure the accuracy of the tension of the three rope sections. The net tension adjusting device can achieve the above beneficial effects. Moreover, the film is flatly pasted and cut after the tension of the triangular net unit is determined, which ensures that the film is accurately flat during use. The method of the present application can obtain a qualified product with accurate shape, size and tension.

[0035] 4. The triangular net film structure unit produced by the method of the present application has three edges corresponding to the rope section number designed in the antenna electrode surface. The existing electrode surface production method is independent of each rope section and each triangular film, and the whole is woven into an electrode surface, which is prone to number exchange errors; compared with the existing electrode surface production method, the unit module produced has an orderly combined integral net unit, and does not have the problems of disorder and number disorder, so that each net film structure unit has a separate triangular net unit and a triangular film. When the whole is woven into a net, only the connection between the modules is needed, and the disadvantage of disorder of the rope section number is avoided, simplifying the assembly process of the electrode surface.

[0036] 5. The device provided by the method of the present invention is simple and efficient. The triangular cable net unit can be fabricated on a single workbench. Without changing the workbench, the thin film can be laid, pasted, and cut to complete the fabrication of the triangular cable membrane structure unit module, thereby improving the efficiency of antenna prototype fabrication. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, do not constitute an undue limitation of the invention. In the drawings:

[0038] Figure 1 is a schematic diagram of the device structure of the present invention;

[0039] Figure 2 is a schematic diagram of the structure of the workbench of the present invention;

[0040] Figure 3 is a top view of the triangular cable net shaping device of the present invention;

[0041] Figure 4 is a schematic diagram of the cable net tension adjustment device of the present invention;

[0042] Figure 5 is a structural schematic diagram of the first force measuring device of the present invention;

[0043] Figure 6 is a schematic diagram of the structure of the second force measuring device of the present invention;

[0044] Figure 7 is a schematic diagram of the distance measuring device of the present invention;

[0045] Figure 8 is a schematic diagram of the externally wrapped structure of the triangular cable net unit of the present invention;

[0046] Figure 9 is a schematic diagram of the cross-wound structure of the triangular cable net unit of the present invention;

[0047] Figure 10 is a schematic diagram of the pressing device of the present invention;

[0048] Figure 11 is a schematic diagram of the fabrication process of the triangular cable membrane structure of the present invention.

[0049] In the diagram, 1. Workbench, 101. First table surface, 102. Second table surface, 103. Third table surface, 104. Adjustable feet, 101-1. Through hole, 101-2. Strip groove;

[0050] 2. Triangular cable net setting device, 201. Linear motion assembly, 202. Planar motion assembly, 203. Cantilever assembly; 201-1. First sliding table, 202-1. Second sliding table, 202-2. Cross shaft assembly, 202-3. First longitudinal shaft assembly, 202-4. Second longitudinal shaft assembly, 202-5. Synchronous motion rod; 203-1. J-shaped extension rod member bottom plate, 203-2. J-shaped extension rod member top plate, 203-3. Fixed head, 203-4. First rope head clamp, 203-5. Fixed pulley; 204. First positioning pin, 205. Second positioning pin, 206. Third positioning pin;

[0051] 3. Cable net tension adjusting device, 301. Traction device, 302. Fixed frame, 303. Second rope head clamp;

[0052] 4. Force measuring device, 401. First force measuring device, 402. Second force measuring device, 401-1. First force sensor, 401-2. Fixed support; 402-1. Second force sensor, 402-2. Fixed base;

[0053] 5. Triangular cable net unit, 501. Cable segment one, 502. Cable segment two, 503. Cable segment three;

[0054] 6. Distance measuring device, 601. First distance measuring device, 602. Second distance measuring device, 603. Third distance measuring device, 601-1. First distance sensor, 601-2. First stop block; 602-1. Second distance sensor, 602-2. Second stop block; 603-1. Third distance sensor, 603-2. Third stop block;

[0055] 7. Rope pressing device, 701. Pressing ring, 702. Pad plate, 703. Punch, 704. Pressing hammer;

[0056] 8. Film; 9. Adhesive tape; 10. Triangular cable film structure unit. Embodiments of the present application

[0057] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments, which are used to explain the present application, but are not intended to limit the present application.

[0058] As shown in Figure 1, the embodiment of the present application provides a kind of thin film reflector antenna film structure modular manufacturing device, including workbench 1, triangular cable net shaping device 2, cable net tension adjusting device 3, force measuring device 4, triangular cable net unit 5, range finding device 6 and rope compression device 7;Wherein, workbench 1 is equipped with triangular cable net shaping device 2, triangular cable net unit 5 is wound on triangular cable net shaping device 2, cable net tension adjusting device 3 is fixed on triangular cable net shaping device 2, the end of triangular cable net shaping device 2 that triangular cable net unit 5 is wound is equipped with force measuring device 4, range finding device 6 is placed on workbench 1, for real-time measurement of the position and size of triangular cable net unit 5.Rope compression device 7 is fixed on the rope ring of the three cable net positioning pins of triangular cable net unit 5 on workbench 1, cooperates with the positioning and locks triangular cable net unit 5.

[0059] As shown in Figure 2, workbench 1 includes first table top 101, second table top 102 and third table top 103, first table top 101 and third table top 103 are ladder-shaped distribution, second table top 102 is located below first table top 101 on the front side of workbench, and third table top 103 is located on the middle and rear side of workbench.The first table top 101 is provided with through hole 101-1 and strip long groove 101-2, and the strip long groove 101-2 is provided in parallel with the X direction of the workbench.The bottom of workbench 1 is provided with adjustable foot 104, and the adjustable foot 104 can realize the adjustment of the levelness of workbench, to ensure the measurement accuracy of force measuring device.

[0060] Figure 3 in combination with Figure 1, triangular cable net shaping device 2 includes linear motion assembly 201, plane motion assembly 202, cantilever assembly 203, first positioning pin 204, second positioning pin 205 and third positioning pin 206;Linear motion assembly 201 is fixed on second table top 102, located directly below strip long groove 101-2 and parallel with groove, and the direction is parallel with the X direction of the workbench;Plane motion assembly 202 is connected with cantilever assembly 203 vertically, plane motion assembly 202 is fixed on third table top 103, cantilever assembly 203 extends from plane motion device 202 and is placed on the upper surface of first table top 101, so that the movement of plane motion assembly can drive the plane sliding of cantilever assembly on first table top.

[0061] Linear motion assembly 201 is fixed on second table top 102, and first slide 201-1 is arranged on linear motion assembly 201, which can realize linear reciprocating sliding on linear motion assembly.

[0062] The planar motion assembly 202 comprises a second sliding table 202-1, a horizontal shaft assembly 202-2, a first vertical shaft assembly 202-3, a second vertical shaft assembly 202-4, and a synchronous motion rod 202-5. The first vertical shaft assembly 202-3 and the second vertical shaft assembly 202-4 are fixed in parallel on the third table top 103 and are parallel to the Y direction of the workbench. The horizontal shaft assembly 202-2 is transversely arranged on the two vertical shaft assemblies and is perpendicular to the first vertical shaft assembly 202-3. The second sliding table 202-1 is arranged on the horizontal shaft assembly 202-2 and can slide linearly along the X direction. The synchronous motion rod 202-5 is connected to the ends of the two vertical shaft assemblies to realize synchronous motion.

[0063] As shown in FIG. 4 in combination with FIG. 3, the cantilever assembly 203 comprises a J-shaped extension member bottom plate 203-1, a J-shaped extension member top plate 203-2, a fixed head 203-3, a first rope clip 203-4, and a fixed pulley 203-5. The J-shaped extension member top plate 203-2 is arranged on the first table top 101, and the J-shaped extension member bottom plate 203-1 is connected to the second sliding table 202-1 of the planar motion assembly. The J-shaped extension member is arranged perpendicular to the horizontal shaft assembly 202-2. The fixed head 203-3 is arranged at the end of the J-shaped extension member top plate 203-2, and a cylindrical through hole is formed in the fixed head 203-3. The third positioning pin 206 penetrates through the cylindrical through hole, and the first rope clip 203-4 is arranged at the end of the third positioning pin 206. The fixed pulley 203-5 is arranged at the front end of the J-shaped extension member top plate 203-2. The cable net tension adjusting device 3 is arranged on the side of the J-shaped extension member top plate 203-2.

[0064] The cable net tension adjusting device 3 comprises a traction device 301, a fixed frame 302, and a second rope clip 303. The fixed frame 302 is fixed to one side of the long end of the J-shaped extension member 203-1, and the traction device 301 is arranged on the fixed frame 302. The traction direction is along the Y direction of the workbench. The second rope clip 303 is arranged on the head of the traction device to clamp the rope. The traction device has the function of providing traction force to adjust and maintain the tension of the cable net.

[0065] As shown in FIGS. 5 and 6 in combination with FIG. 2, the force measuring device 4 comprises a first force measuring device 401 and a second force measuring device 402. The first force measuring device 401 is fixed below the through hole 101-1 of the first table top 101 by a fixed support 401-2. The first force measuring device 401 is provided with a first force sensor 401-1. The first positioning pin 204 is threadedly connected to the top of the first force sensor.

[0066] As shown in FIG. 6, the second force measuring device 402 is installed on the first sliding table 201-1 of the linear motion assembly 201 through a fixed base 402-2, and the fixed base 402-2 is provided with a second force sensor 402-1, and a second positioning pin 205 is threadedly connected to the top of the second force sensor 402-1, and the top end of the second positioning pin 205 passes through the strip-shaped long slot 101-2.

[0067] The first positioning pin 204, the second positioning pin 205 and the third positioning pin 206 are arranged in a direction perpendicular to the first table top 101.

[0068] The first force sensor 401-1 and the second force sensor 402-1 both include measurement of two directions of X axis and Y axis, and the fixed directions of the two are both aligned with the X direction of the workbench.

[0069] As shown in FIG. 7, one end of the rope of the triangular cable net unit 5 is clamped on the first rope clip 203-4, and then passes through the third positioning pin 206, the first positioning pin 204, the second positioning pin 205 and the third positioning pin 206 in sequence to form a triangular cable net, and the other end passes through the fixed pulley 203-5 and is clamped on the second rope clip 303. For the sake of clear description, the triangular cable net unit between the first positioning pin 204 and the second positioning pin 205 is named as cable segment one 501, the triangular cable net unit between the second positioning pin 205 and the third positioning pin 206 is named as cable segment two 502, and the triangular cable net unit between the third positioning pin 206 and the first positioning pin 204 is named as cable segment three 503, and the three cable segments are stretched into a triangular cable net.

[0070] The triangular cable net unit 5 can be wound around the positioning pin in an outer winding mode, i.e., the rope is wound around the positioning pin outside in sequence, as shown in FIG. 8, or in a cross winding mode, i.e., the rope is crossed at the positioning pin, as shown in FIG. 9.

[0071] The triangular cable net shaping device 2 can move the second positioning pin 205 and the third positioning pin 206 to the required positions under the coordinated movement of the linear motion assembly 201 and the planar motion assembly 202, together with the first positioning pin 204 to form three vertices of a triangle, thereby completing the shaping of the triangle.

[0072] The cable net of the triangular cable net unit 5 is tensioned by the three positioning pins to form a triangular structure in a tensioned state. The first positioning pin 204 at the top of the first force measuring device 401 is positioned and installed through the through hole 101-1 of the first table top 101, and the second positioning pin 205 at the top of the second force measuring device 402 is limited in the strip-shaped long slot 101-2 of the first table top 101 to limit its linear movement.

[0073] The cable net tension adjusting device 3 is fixed on one side of the cantilever assembly 203 and connected with the cable net of the triangular cable net unit 5 to provide traction and cable net tension adjusting capacity.

[0074] As shown in FIG. 7, the distance measuring device 6 comprises a first distance measuring device 601, a second distance measuring device 602 and a third distance measuring device 603; the first distance measuring device 601 comprises a first distance sensor 601-1 and a first stop block 601-2; the second distance measuring device 602 comprises a second distance sensor 602-1 and a second stop block 602-2; the third distance measuring device 603 comprises a third distance sensor 603-1 and a third stop block 603-2. The first distance sensor 601-1 is arranged on the first sliding table 201-1 of the linear motion assembly 201, the first stop block 601-2 is arranged on the fixed support 401-2 of the first force measuring device 401, the orientation of the first distance sensor 601-1 is perpendicular to the first stop block 601-2, the length L1 of the cable segment one 501 is calculated by measuring the distance between the first distance sensor 601-1 and the first stop block 601-2; the second distance sensor 602-1 is arranged on one side of the fixed head 203-3 at the end of the cantilever assembly 203, the second stop block 602-2 is arranged at the front side edge of the first table top 101, parallel to the X direction of the workbench, opposite to the cantilever assembly 203, the orientation of the second distance sensor 602-1 is perpendicular to the second stop block 602-2, the length L2 of the cable segment two 502 is calculated by measuring the distance between the second distance sensor 602-1 and the second stop block 602-2; the third distance sensor 603-1 is arranged on one side of the fixed head 203-3 at the end of the cantilever assembly 203, the third stop block 603-2 is arranged at the left side edge of the first table top 101, parallel to the Y direction of the workbench, the orientation of the third distance sensor 603-1 is perpendicular to the second stop block 603-2, the length L3 of the cable segment three 503 is calculated by measuring the distance between the third distance sensor 603-1 and the second stop block 603-2.

[0075] The second distance sensor 602-1 and the third distance sensor 603-1 are installed on the same side of the fixed head 203-3 and distributed on different sides of the fixed pulley 203-5 to avoid interference.

[0076] The first distance sensor, the second distance sensor and the third distance sensor adopt a non-contact measurement method, such as laser ranging, ultrasonic ranging, radar ranging, etc., and preferably adopt laser ranging.

[0077] In particular, the length of the second stop block 602-2 should not be shorter than the transverse movable distance of the second sliding table 202-1 on the planar motion assembly 202; the length of the third stop block 603-2 should not be shorter than the longitudinal movable distance of the second sliding table 202-1 on the planar motion assembly 202.

[0078] As shown in Fig. 10, the rope compression device 7 comprises a compression ring 701, a backing plate 702, a punch 703 and a punch hammer 704; the backing plate 702, the punch 703 and the punch hammer 704 are movable components. The backing plate 702 is placed under the compression ring 701, and the compression ring is compressed on the rope ring by using the punch 703 and the punch hammer 704.

[0079] As shown in Fig. 11, the film 8, the adhesive tape 9 and the triangular cable net structure unit 10 are cut and shaped according to the present application.

[0080] The modular manufacturing method of the film reflector antenna cable net structure module manufacturing device according to the present application is carried out according to the following steps:

[0081] Step 1: Adjust the adjustable foot 104 so that the first table top 101 of the workbench is in a horizontal state to ensure the accuracy and effectiveness of the subsequent force data and distance data;

[0082] Step 2: Control the triangular cable net shaping device 2 to adjust the length of the cable segment of the triangular cable net unit 5 according to the measured data of the distance measuring device, and complete the shaping of the triangular cable net unit;

[0083] Under the control of the power source, the first sliding table 201-1 of the triangular cable net shaping device 2 slides on the linear motion assembly 201 and drives the second positioning pin 205 to move, so that the length of the cable segment one 501 of the triangular cable net unit 5 reaches L1, and the real-time distance is measured by the first distance measuring device 601 during the movement;

[0084] Under the control of the power source, the horizontal shaft assembly 202-2 of the planar motion assembly 202 of the triangular cable net shaping device moves on the first vertical shaft assembly 202-3 and the second vertical shaft assembly 202-4 respectively, controls the second sliding table 202-1 to slide on the horizontal shaft assembly, and drives the third positioning pin 206 on the cantilever assembly 20 to move, so that the lengths of the cable segment two 502 and the cable segment three 503 reach L2 and L3 respectively, and the real-time distances are measured by the second distance measuring device 602 and the third distance measuring device 603 during the movement;

[0085] When controlling the movement of the second sliding table 202-1, the horizontal and vertical shafts can move in the order of horizontal first and vertical second, or vertical first and horizontal second, or both axes can move simultaneously; under the coordinated movement of the linear motion assembly 201 and the planar motion assembly 202 of the triangular cable net shaping device 2, the second positioning pin 205 and the third positioning pin 206 can be moved to the required position to form three vertices of a triangle together with the first positioning pin 204, and the shaping of the triangular cable net unit is completed;

[0086] Step 3: Wrap the rope between the three positioning pins to form the triangular cable net unit 5;

[0087] One end of the triangular cable net unit 5 is clamped at the first rope clipper 203-4 at the end of the cantilever assembly 203, and a rope loop is formed near the position of the third positioning pin 206, the rope loop is sleeved on the third positioning pin 206 through the pressing ring 701; the rope is wound to the first positioning pin 204, and a rope loop is formed near the position of the first positioning pin 204, the rope loop is sleeved on the first positioning pin through the pressing ring 701; the rope is wound to the second positioning pin 205, and a rope loop is formed near the position of the second positioning pin 205, the rope loop is sleeved on the second positioning pin through the pressing ring 701;

[0088] After the rope is wound around the second positioning pin 205, it continues to be wound back to the third positioning pin 206, the other end of the rope is inserted into the pressing ring 701, and then the rope is wound around the third positioning pin 206 and the fixed pulley 203-5 in turn, and then clamped to the second rope clipper 303 of the cable net tension adjusting device 3; at this time, the rope wound between the three positioning pins forms a triangular cable net unit 5;

[0089] Step 4: the cable net tension adjusting device 3 pulls the triangular cable net unit 5 under the control of the power source, determines that each cable segment reaches the set tension according to the force sensor, and positions and locks the rope on the rope loop of the cable net positioning pin through the rope pressing device:

[0090] According to the data of the first force sensor 401-1 at the first positioning pin 204, the tension in the cable segment three 503 is calculated, and when the tension value reaches the set tension T3 of the cable segment three, the pulling is stopped, then the pad 702 is placed under the pressing ring 701, and the pressing ring is pressed on the rope loop using the punch 703 and the punching hammer 704, and the determination of the tension in the cable segment three 503 is completed;

[0091] The cable net tension adjusting device 3 relaxes the traction and retracts the triangular cable net unit 5, and according to the data of the second force sensor 402-1 at the second positioning pin 205, the tension in the cable segment one 501 is calculated, and when the tension value reaches the set tension T1 of the cable segment one, the pulling is stopped, the pad is placed under the pressing ring, and the pressing ring is pressed on the rope loop using the punch and the punching hammer, and the determination of the tension in the cable segment one 501 is completed;

[0092] The cable net tension adjusting device 3 relaxes the traction again and retracts the triangular cable net unit, and according to the data of the second force sensor 402-1 at the second positioning pin 205, the tension in the cable segment two 502 is calculated, and when the tension value reaches the set tension T2 of the cable segment two, the pulling is stopped, the pad is placed under the pressing ring, and the pressing ring is pressed on the rope loop using the punch and the punching hammer, and the determination of the tension in the cable segment two 502 is completed; at this time, the cable tension adjustment of the three cable segments of the triangular cable net unit is completed;

[0093] Step 5: cut off the excess rope at both ends of the rope, keep the tension state of the triangular cable net, and complete the production of the triangular cable net unit;

[0094] Step 6: making a modular triangular cable membrane structure unit 10;

[0095] Cut a rectangular film 8, the length of the rectangle is greater than the length of the base of the triangle, and the width is equal to the height of the triangle, with the reverse side up, and lay it flat under the triangular cable net unit 5;

[0096] Use special tape 9 to paste the three tensioned cable segments and the film together respectively, cut off the excess film along the edge of the tape after pasting, complete the pasting of the triangular film, and get a modular triangular cable membrane structure unit 10;

[0097] The linear motion assembly 201 and the planar motion assembly 202 respectively retreat a small distance towards the first positioning pin 204, so that the triangular cable net unit 5 is relaxed, and the triangular cable net with the pasted film is removed, completing the making of the triangular cable membrane structure unit 10.

[0098] In use, the triangular cable membrane structure unit in a relaxed state needs to be tensioned and hung to the corresponding position, such as a film reflector antenna, and after a plurality of triangular cable membrane structure units are hung to each other, they can be tensioned into an integral cable membrane structure, and each triangular cable membrane structure unit in a tensioned state retains the cable segment length and cable segment internal force during making.

[0099] The present application effectively solves the problems of the existing film reflector antenna, such as complicated electrode surface making, poor interchangeability, large error, etc., and the triangular cable membrane structure unit can be obtained by the method of the present application.

[0100] The present application is not limited to the above embodiments, and based on the technical solutions disclosed in the present application, those skilled in the art can make some substitutions and modifications to some technical features without creative labor, and these substitutions and modifications are all within the protection scope of the present application.

Claims

1. A thin film reflector antenna thin film structure modular manufacturing apparatus, characterized by, include: A workbench for securing the triangular cable net shaping device and a positioning pin that runs through the table for tensioning the ropes; A triangular cable net shaping device is configured with a linear motion component, a planar motion component, and a cantilever component for shaping the ropes of triangular cable net units; The triangular cable net units are tensioned into a triangular cable net with balanced tension by ropes being wound around the positioning pins of the triangular cable net shaping device. The cable net tension adjustment device is fixed on the triangular cable net shaping device and is used to provide traction force and adjust tension of the triangular cable net unit. The force measuring device is fixed to the linear motion component of the worktable and the triangular cable net shaping device respectively, and measures the tension of the rope in the X and Y directions of the worktable through the force measuring sensor; The distance measuring device is fixed on the workbench and the triangular cable net shaping device respectively, and is used to measure the distance of the cable segments of the triangular cable net unit; A rope clamping device is used to position and lock the rope onto the rope loop of the triangular cable net unit cable net positioning pin; Thin film and tape are used to attach the fabricated triangular cable mesh units to form modular triangular cable membrane structure units.

2. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The workbench includes a first table surface and a third table surface arranged in a stepped manner. A second table surface is provided below the front side of the first table surface. The first table surface has through holes and a long strip groove parallel to the X direction of the workbench. The bottom of the workbench is provided with adjustable feet.

3. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The linear motion component of the triangular cable net shaping device is fixed on the second table surface, located directly below the long strip groove and parallel to the groove; the planar motion component is fixed on the third table surface, and the planar motion component is equipped with a first slide. The planar motion component is perpendicularly connected to the cantilever component, and the cantilever component extends from the planar motion device and rests on the upper surface of the first table surface.

4. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The planar motion assembly includes a second slide, a horizontal axis assembly, a pair of vertical axis assemblies, and a synchronous motion rod. The pair of vertical axis assemblies are fixed parallel to the third surface of the worktable, with their direction parallel to the Y direction of the worktable. The horizontal axis assembly spans the two vertical axis assemblies, with its direction perpendicular to the first vertical axis assembly. The second slide is slidably connected to the horizontal axis assembly. The synchronous motion rod is connected to the end of the pair of vertical axis assemblies.

5. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The cantilever assembly includes a J-shaped extension member. The top plate of the J-shaped extension member is placed on the first platform, and the bottom plate is connected to the second slide of the planar motion assembly. The top plate of the J-shaped extension member is provided with a fixing head, through which a positioning pin for tensioning the rope passes.

6. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The cable net tension adjustment device is located on one side of the cantilever assembly. The cable net tension adjustment device is connected to the second rope head clamp through the traction device to hold the rope and pull the rope along the Y direction of the workbench.

7. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, A pair of force measuring devices are respectively equipped with a force sensor and a positioning pin for a tension rope. The first force measuring device is located on the first platform, and the second force measuring device is installed on the slide of the linear motion component. The first and second positioning pins are both located on the top of the force measuring devices. The first positioning pin is positioned and installed through the through hole of the first platform, and the second positioning pin is limited in the long slot of the first platform to restrict its linear movement.

8. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 7, wherein, The distance measuring device comprises three pairs of distance sensors and blocks, the first distance sensor is installed on the first sliding table of the linear motion assembly, and the first block is fixed on the first force measuring device; the second and third distance sensors are respectively arranged on the fixed heads at the ends of the cantilever assembly and do not interfere with each other, the second block is arranged on the front side edge of the first table top and is parallel to the X direction of the workbench, and the third block is arranged on the left side edge of the first table top and is parallel to the Y direction of the workbench; the lengths of the three cable segments of the triangular cable net unit are obtained by respectively measuring the distances between the distance sensors and the blocks.

9. The thin film reflector antenna thin film structure modular fabrication apparatus of claim 1, wherein, The form of the rope of the triangular cable net unit winding around the positioning pins is external winding or cross winding.

10. A method of modular fabrication of a thin film reflectarray module according to any one of claims 1 to 9, wherein the method comprises: providing a plurality of thin film reflectarray modules according to any one of claims 1 to 9; and assembling the plurality of thin film reflectarray modules into a thin film reflectarray module array. The method comprises the following steps: Adjusting the adjustable foot so that the workbench is in a horizontal state; According to the measured data of the distance measuring device, the coordinated movement of the linear motion assembly and the planar motion assembly of the triangular cable net shaping device is controlled respectively, so that the second positioning pin and the third positioning pin move, together with the first positioning pin, to adjust the lengths of the cable segments of the triangular cable net unit, and the shaping of the triangular cable net unit is realized; The rope winds around the three positioning pins to form a triangular cable net; The cable net tension adjusting device pulls the triangular cable net unit under the control of the power source, determines that each cable segment reaches the set tension according to the force sensor, and positions and locks the rope on the rope ring of the cable net positioning pin through the rope pressing device; The excess rope ends of the rope are cut, the tension state of the triangular cable net is maintained, and the triangular cable net unit is completed; The triangular cable net unit is pasted to form a modular triangular cable membrane structure unit.

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