A large-sized spiral deployable antenna

Abstract

The present invention discloses a large-sized spiral deployable antenna, which relates to the technical field of spiral antennas. It includes a main rod and a sub-rod. A through hole and a plurality of movable holes are formed in the outer wall of the top of the main rod. A fixing ring is fixedly arranged at the top inner wall of the main rod, and a plurality of U-shaped seats are fixedly arranged on the bottom outer wall of the fixing ring. By pressing the control ring to drive the support rod to move downward, the support rod moves downward and abuts against the surface of the limit clamping plate. The limit clamping plate rotates downward under the force, and the limit clamping plate is separated from the sub-rod. The sub-rod can be adjusted upward or downward. After the adjustment is completed, the control ring is released. The control ring and the support rod are reset upward under the elastic action of the compression spring. After the force on the limit clamping plate disappears, the limit clamping plate rotates upward under the elastic action of the torsion spring and clamps and fixes the sub-rod again. Through the set adjustable sub-rod, the large-sized spiral antenna can be folded and deployed, reducing the weight and volume of the large-sized spiral antenna, thereby greatly reducing the installation space of the spiral antenna.

Description

Technical Field

[0001] The present invention relates to the technical field of helical antennas, and particularly to a large-sized helical deployable antenna. Background Art

[0002] A helical antenna is an antenna with a helical shape. It consists of a metal helical wire with good electrical conductivity, usually fed by a coaxial cable. The core wire of the coaxial cable is connected to one end of the helical wire, and the outer conductor of the coaxial cable is connected to a grounded metal mesh (or plate). The radiation direction of the helical antenna is related to the circumference of the helical wire. When the circumference of the helical wire is much smaller than a wavelength, the direction of the strongest radiation is perpendicular to the helical axis; when the circumference of the helical wire is on the order of one wavelength, the strongest radiation appears in the direction of the helical axis.

[0003] After retrieval, a deployable helical antenna with the publication number of CN111129721A is disclosed. The invention discloses a deployable helical antenna, which includes an antenna base, a helical antenna, a plurality of inter-arm support devices, a pitch control device, and an antenna cover plate. The helical antenna includes a plurality of helical radiation arms. The plurality of inter-arm support devices are axially distributed on the inner circumference of the helical antenna to ensure the lateral spacing of each radiation arm. The pitch control device is arranged between the antenna cover plate and the inter-arm support device, between adjacent inter-arm support devices, and between the inter-arm support device and the antenna base. The pitch control device includes a plurality of flexible support wires evenly distributed circumferentially around the helical antenna. The pitch control device is used to ensure the longitudinal pitch of the helical antenna. The deployable helical antenna provided by the present invention utilizes the self-restoring force of the radiation arms and the interaction of the inter-arm support device and the pitch control device to realize the folding and unfolding of the large-sized helical antenna, reduce the weight and volume of the large-sized helical antenna, and thus greatly reduce the installation space of the helical antenna.

[0004] In the above solution, only the adjustment of the folding and unfolding of the helical antenna is considered through the pitch control device, without considering that the helical antenna itself has a certain elasticity. When the helical antenna is adjusted without external traction, the helical antenna will be offset and deformed. Moreover, when adjusting the helical antenna, the adjustment distance of the helical antenna cannot be controlled, and only single folding and unfolding can be performed. In addition, after a failure occurs in the existing helical antenna, both ends of the helical antenna are directly fixed, which is inconvenient for the repair and replacement of the helical antenna. Summary of the Invention

[0005] The purpose of the present invention is to provide a large-sized helical deployable antenna to solve the technical problems raised in the background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a large-sized spiral deployable antenna, comprising a main rod and a secondary rod. A through hole and a plurality of movable holes are provided on the outer wall of the top of the main rod. A fixing ring is fixedly arranged at the top inner wall of the main rod. A plurality of U-shaped seats are fixedly arranged on the outer wall of the bottom of the fixing ring. A fixing rod is fixedly arranged on the inner wall of each U-shaped seat. A shaft rod is rotatably arranged on the outer wall of each fixing rod. A limiting clamping plate is fixedly arranged on the outer wall of each shaft rod. A plate groove is provided on the outer wall of each limiting clamping plate. A torsion spring is arranged on the outer wall of each shaft rod. One end of each torsion spring is fixedly connected to the outer wall of the corresponding limiting clamping plate, and the other end of each torsion spring is fixedly connected to the inner wall of the corresponding U-shaped seat. A support rod is inserted into the inner wall of each movable hole. One end of each support rod located outside the main rod is fixedly connected to the same control ring. A plurality of compression springs are fixedly arranged between the control ring and the main rod.

[0007] Preferably, an installation seat is fixedly arranged on the outer wall of the bottom of the main rod. A placement groove is provided on the outer wall of the top of the installation seat. An activity groove is provided on the inner wall of the placement groove. Seat holes are provided on the outer walls of both sides of the installation seat. A connecting rod is movably inserted into the inner wall of each seat hole. A control button is fixedly arranged at one end of each connecting rod away from the installation seat. An elastic spring is fixedly arranged between each control button and the installation seat. An arc-shaped clamping plate is fixedly arranged on the outer wall of the other end of each connecting rod. An arc-shaped clamping plate is fixedly arranged on the inner wall of each arc-shaped clamping plate.

[0008] Preferably, a rod groove is provided on the outer wall of the top of the secondary rod. A buffer spring is fixedly arranged at the bottom of the inner wall of the rod groove. The other end of the buffer spring is fixedly connected to a buffer plate. The outer wall of the buffer plate is slidably connected to the inner wall of the rod groove. A fixing bolt is threadedly connected to the inner wall of the rod groove.

[0009] Preferably, a lower base is inserted into the placement groove. Two card slots are provided on the outer wall of the lower base. A spiral antenna is fixedly arranged on the outer wall of the top of the lower base. An upper base is fixedly arranged on the outer wall of the other end of the spiral antenna.

[0010] Preferably, a first limiting ring and a second limiting ring are fixedly arranged on the outer wall of the secondary rod. The first limiting ring is located above the second limiting ring.

[0011] Preferably, a rubber pad is fixedly arranged on the outer wall of one side of each limiting clamping plate away from the corresponding U-shaped seat. The movable holes correspond to the limiting clamping plates one by one, and the support rods correspond to the compression springs one by one. Each support rod is respectively located inside the corresponding compression spring.

[0012] Preferably, each of the connecting rods is respectively located inside the corresponding elastic spring, and each of the arc-shaped clamping plates is located inside the movable groove.

[0013] Preferably, the card slots correspond to the arc-shaped clamping plates one by one, and the arc-shaped clamping plates are inserted into the card slots.

[0014] Preferably, a first sleeve hole is provided on the outer wall of the top of the lower base, the diameter of the first sleeve hole is the same as the diameter of the main rod, the inner wall of the first sleeve hole is inserted into the main rod, a second sleeve hole is provided on the outer wall of the upper base, the diameter of the second sleeve hole is the same as the diameter of the auxiliary rod, and the inner wall of the second sleeve hole is inserted into the auxiliary rod.

[0015] Preferably, the upper base is located between the fixing bolt and the first limiting ring, the diameter of the fixing bolt is larger than the diameter of the second sleeve hole, and turning the fixing bolt can be used to limit the upper base.

[0016] Compared with the related art, a large-size spiral deployable antenna provided by the present invention has the following beneficial effects:

[0017] 1. The present invention provides a large-size spiral deployable antenna. By pressing the control ring to drive the support rod to move downward, the support rod moves downward and touches the surface of the limiting clamping plate. The limiting clamping plate rotates downward under the force, and the rubber pad of the limiting clamping plate is separated from the auxiliary rod. The auxiliary rod is adjusted upward or downward. After the adjustment is completed, the control ring is released. The control ring and the support rod are reset upward under the elastic action of the compression spring. After the force on the limiting clamping plate disappears, it rotates upward under the elastic action of the torsion spring and clamps and fixes the auxiliary rod again. By setting the adjustable auxiliary rod, the large-size spiral antenna can be folded and deployed, reducing the weight and volume of the large-size spiral antenna, thereby greatly reducing the installation space of the spiral antenna.

[0018] 2. The present invention provides a large-size spiral deployable antenna. By pulling out the control buttons on both sides of the mounting seat outward, the control buttons drive the connecting rods to extend outward, and at the same time drive the arc-shaped clamping plates to slide inside the movable groove. The arc-shaped clamping plates are separated from the card slots provided on the outer wall of the base. At the same time, the fixing bolt at the top of the auxiliary rod is unscrewed, and the upper base and the lower base are pulled upward to remove the spiral antenna, which is convenient for replacing the spiral antenna. At the same time, a buffer spring and a buffer plate are provided inside the rod groove. When the fixing bolt is screwed into the rod groove, the buffer plate and the buffer spring are compressed under the force, and at the same time the fixing bolt receives the reaction force of the buffer spring, effectively preventing the problem of loosening of the fixing bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is an exploded view of a partial structure at the spiral antenna of the present invention;

[0021] Figure 3 Explosion diagram of partial structure at the main rod of the present invention;

[0022] Figure 4 Cross-sectional view of partial structure at the main rod of the present invention;

[0023] Figure 5 Cross-sectional view of partial structure at the secondary rod of the present invention;

[0024] Figure 6 For the present invention Figure 4 Enlarged view of the structure at position A in;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of the structure at position B in;

[0026] Figure 8 For the present invention Figure 2 Enlarged view of the structure at position C in;

[0027] Figure 9 For the present invention Figure 2 Enlarged view of the structure at position D in;

[0028] Figure 10 For the present invention Figure 1 Enlarged view of the structure at position E in;

[0029] Figure 11 For the present invention Figure 5 Enlarged view of the structure at position F in.

[0030] In the figure: 1. Main rod; 101. Through hole; 102. Fixed ring; 103. U-shaped seat; 104. Fixed rod; 105. Shaft rod; 106. Limit clamping plate; 107. Plate groove; 108. Torsion spring; 109. Rubber pad; 110. Moving hole; 111. Compression spring; 112. Support rod; 113. Control ring; 2. Secondary rod; 201. Rod groove; 202. Buffer spring; 203. Buffer plate; 204. First limit ring; 205. Second limit ring; 3. Lower base; 301. First socket; 302. Card slot; 4. Upper base; 401. Second socket; 5. Helical antenna; 6. Mounting seat; 601. Seat hole; 602. Placing groove; 603. Moving groove; 604. Connecting rod; 605. Elastic spring; 606. Control button; 607. Arc-shaped clamping plate; 608. Arc-shaped clamping board; 7. Fixed bolt. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] Please refer to Figure 1 - Figure 7 , the present invention provides a technical solution: a large-sized spiral deployable antenna, including a main rod 1 and a secondary rod 2. A through hole 101 and a plurality of movable holes 110 are provided on the outer wall of the top of the main rod 1. A fixing ring 102 is fixedly arranged at the top inner wall of the main rod 1. A plurality of U-shaped seats 103 are fixedly arranged on the bottom outer wall of the fixing ring 102. A fixing rod 104 is fixedly arranged on the inner wall of each U-shaped seat 103. A shaft rod 105 is rotatably arranged on the outer wall of each fixing rod 104. A limiting clamping plate 106 is fixedly arranged on the outer wall of each shaft rod 105. A plate groove 107 is provided on the outer wall of each limiting clamping plate 106. A torsion spring 108 is arranged on the outer wall of each shaft rod 105. One end of each torsion spring 108 is fixedly connected to the outer wall of the corresponding limiting clamping plate 106, and the other end of each torsion spring 108 is fixedly connected to the inner wall of the corresponding U-shaped seat 103. A support rod 112 is inserted into the inner wall of each movable hole 110. One end of each support rod 112 located outside the main rod 1 is fixedly connected to the same control ring 113. A plurality of compression springs 111 are fixedly arranged between the control ring 113 and the main rod 1. A rubber pad 109 is fixedly arranged on the outer wall of one side of each limiting clamping plate 106 away from the corresponding U-shaped seat 103. The movable holes 110 correspond to the limiting clamping plates 106 one by one, and the support rods 112 correspond to the compression springs 111 one by one. Each support rod 112 is respectively located inside the corresponding compression spring 111.

[0034] In this embodiment, the helical antenna 5 is composed of a main rod 1 and a sub-rod 2. A fixing ring 102 is provided on the top of the inner wall of the main rod 1, and a plurality of U-shaped seats 103 are fixedly provided on the outer wall of the bottom of the fixing ring 102. A fixing rod 104 is provided on the inner wall of the U-shaped seat 103. A shaft rod 105 is rotatably provided on the outer wall of the fixing rod 104. A limiting splint 106 is fixedly provided on the outer wall of the shaft rod 105. A plate groove 107 is provided on the outer wall of the limiting splint 106. A torsion spring 108 is provided on the outer wall of the shaft rod 105 and inside the plate groove 107. One end of the torsion spring 108 is fixedly connected to the outer wall of the limiting splint 106, and the other end of the torsion spring 108 is fixedly connected to the inner wall of the U-shaped seat 103. The torsion spring 108 is initially in a stretched state, and the limiting splint 106 is subjected to the torsion spring 1 08's pulling force rotates upward, and the rubber pad 109 at the end of the limiting clamp 106 is in full contact with the auxiliary rod 2. Multiple limiting clamps 106 clamp the auxiliary rod 2 to ensure the stability of the auxiliary rod 2. When the helical antenna 5 needs to be adjusted, the support rod 112 is driven to move downward by pressing the control ring 113. The support rod 112 moves downward and contacts the surface of the limiting clamp 106. The limiting clamp 106 is forced to rotate downward, and the rubber pad 109 of the limiting clamp 106 is disengaged from the auxiliary rod 2. The auxiliary rod 2 is adjusted upward or downward. After the adjustment is completed, the control ring 113 is released, and the control ring 113 and the support rod 112 are reset upward under the elastic action of the compression spring 111. After the force on the limiting clamp 106 disappears, it rotates upward under the elastic action of the torsion spring 108 to clamp and fix the auxiliary rod 2 again.

[0035] Example 2:

[0036] See also Figure 1 - Figure 11As shown in the figure, on the basis of the first embodiment, the present invention provides a technical solution: an installation seat 6 is fixedly arranged on the outer wall of the bottom of the main rod 1, a placement groove 602 is opened on the outer wall of the top of the installation seat 6, a movable groove 603 is opened on the inner wall of the placement groove 602, seat holes 601 are opened on both outer walls of the installation seat 6, a connecting rod 604 is movably inserted into the inner wall of each seat hole 601, a control button 606 is fixedly arranged at one end of each connecting rod 604 away from the installation seat 6, an elastic spring 605 is fixedly arranged between each control button 606 and the installation seat 6, an arc-shaped clamping plate 607 is fixedly arranged on the outer wall of the other end of each connecting rod 604, an arc-shaped clamping plate 608 is fixedly arranged on the inner wall of each arc-shaped clamping plate 607, a rod groove 201 is opened on the outer wall of the top of the auxiliary rod 2, a buffer spring 202 is fixedly arranged at the bottom of the inner wall of the rod groove 201, a buffer plate 203 is fixedly arranged on the outer wall of the other end of the buffer spring 202, the outer wall of the buffer plate 203 is slidably connected with the inner wall of the rod groove 201, a fixing bolt 7 is threadedly connected to the inner wall of the rod groove 201, a lower base 3 is inserted into the placement groove 602, two card slots 302 are opened on the outer wall of the lower base 3, a spiral antenna 5 is fixedly arranged on the outer wall of the top of the lower base 3, an upper base 4 is fixedly arranged on the outer wall of the other end of the spiral antenna 5, a first limiting ring 204 and a second limiting ring 205 are fixedly arranged on the outer wall of the auxiliary rod 2, the first limiting ring 204 is located above the second limiting ring 205, each connecting rod 604 is respectively located inside the corresponding elastic spring 605, each arc-shaped clamping plate 607 is located inside the movable groove 603, the card slots 302 correspond to the arc-shaped clamping plates 607 one by one, the arc-shaped clamping plate 608 is inserted into the card slot 302, a first sleeve hole 301 is opened on the outer wall of the top of the lower base 3, the diameter of the first sleeve hole 301 is the same as the diameter of the main rod 1, the inner wall of the first sleeve hole 301 is inserted into the main rod 1, a second sleeve hole 401 is opened on the outer wall of the upper base 4, the diameter of the second sleeve hole 401 is the same as the diameter of the auxiliary rod 2, the inner wall of the second sleeve hole 401 is inserted into the auxiliary rod 2, the upper base 4 is located between the fixing bolt 7 and the first limiting ring 204, the diameter of the fixing bolt 7 is larger than the diameter of the second sleeve hole 401, and turning the fixing bolt 7 can be used to limit the upper base 4.

[0037] In this embodiment, when the helical antenna 5 fails, pull the control buttons 606 on both sides of the mounting base 6 outwards. The control buttons 606 drive the connecting rod 604 to extend outwards, and at the same time drive the arc-shaped clamping plate 607 to slide inside the movable groove 603. The arc-shaped clamping plate 608 disengages from the inside of the clamping groove 302 opened on the outer wall of the lower base 3. At the same time, unscrew the fixing bolt 7 at the top of the auxiliary rod 2, pull the upper base 4 and the lower base 3 upwards to remove the helical antenna 5. After the replacement is completed, first sleeve the lower base 3 on the outer wall of the main rod 1 and pull downwards until the lower base 3 falls into the placement groove 602. Rotate and adjust the position of the lower base 3 so that the clamping groove 302 corresponds to the arc-shaped clamping plate 608. Release the control buttons 606 on both sides. The arc-shaped clamping plate 608 is reset under the elastic action of the elastic spring 605 and snaps into the inside of the clamping groove 302. Sleeve the upper base 4 on the outer wall of the auxiliary rod 2 and pull downwards to fall on the first limiting ring 204. Screw the fixing bolt 7 into the rod groove 201 to limit the upper base 4 and ensure the stability of the upper base 4 and the lower base 3. At the same time, a buffer spring 202 and a buffer plate 203 are arranged inside the rod groove 201. After the fixing bolt 7 is screwed into the rod groove 201, the buffer plate 203 and the buffer spring 202 are compressed under force, and at the same time the fixing bolt 7 receives the reaction force of the buffer spring 202, effectively preventing the problem of loosening of the fixing bolt 7.

[0038] Working principle: The helical antenna 5 is composed of a main rod 1 and a sub-rod 2. A fixing ring 102 is provided on the top of the inner wall of the main rod 1. A plurality of U-shaped seats 103 are fixedly provided on the outer wall of the bottom of the fixing ring 102. A fixing rod 104 is provided on the inner wall of the U-shaped seat 103. A shaft 105 is rotatably provided on the outer wall of the fixing rod 104. A limiting splint 106 is fixedly provided on the outer wall of the shaft 105. A plate groove 107 is provided on the outer wall of the limiting splint 106. A torsion spring 108 is provided on the outer wall of the shaft 105 and inside the plate groove 107. One end of the torsion spring 108 is fixedly connected to the outer wall of the limiting splint 106, and the other end of the torsion spring 108 is fixedly connected to the inner wall of the U-shaped seat 103. 8 is initially in a stretched state, and the limiting clamp 106 rotates upward by the tension of the torsion spring 108. The rubber pad 109 at the end of the limiting clamp 106 is in full contact with the auxiliary rod 2. Multiple limiting clamps 106 clamp the auxiliary rod 2 to ensure the stability of the auxiliary rod 2. When the helical antenna 5 needs to be adjusted, the support rod 112 is driven to move downward by pressing the control ring 113. The support rod 112 moves downward and contacts the surface of the limiting clamp 106. The limiting clamp 106 is forced to rotate downward, and the rubber pad 109 of the limiting clamp 106 is separated from the auxiliary rod 2. The auxiliary rod 2 is adjusted upward or downward. After the adjustment is completed, the control ring 113 is released. The control ring 113 and the support rod 112 return upward under the elastic action of the compression spring 111. After the force on the limit clamp 106 disappears, it rotates upward under the elastic action of the torsion spring 108 to re-clamp the auxiliary rod 2. When the helical antenna 5 fails, the control buttons 606 on both sides of the mounting seat 6 are pulled outward. The control buttons 606 drive the connecting rod 604 to extend outward, and at the same time drive the arc clamp 607 to slide inside the movable groove 603. The arc clamping plate 608 is disengaged from the inside of the clamping groove 302 opened on the outer wall of the lower base 3. At the same time, the fixing bolt 7 on the top of the auxiliary rod 2 is unscrewed, and the upper base 4 and the lower base 3 are pulled upward to remove the helical antenna 5. After the replacement is completed, the lower base 3 is first sleeved on the outer wall of the main rod 1, and pulled downward until the lower base 3 falls into the placement groove 602, and the position of the lower base 3 is adjusted by rotating. The upper base 4 is sleeved on the outer wall of the auxiliary rod 2, and it is pulled downward and falls on the first limiting ring 204. The fixing bolt 7 is screwed into the rod groove 201 to limit the upper base 4 and ensure the stability of the upper base 4 and the lower base 3. At the same time, a buffer spring 202 and a buffer plate 203 are provided inside the rod groove 201. When the fixing bolt 7 is screwed into the rod groove 201, the buffer plate 203 and the buffer spring 202 are compressed. At the same time, the fixing bolt 7 is subjected to the reaction force of the buffer spring 202, which effectively prevents the fixing bolt 7 from loosening.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and permutations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-sized spiral deployable antenna, comprising a main rod (1) and a secondary rod (2), characterized in that: A through hole (101) and a plurality of movable holes (110) are formed in the outer wall of the top of the main rod (1). A fixing ring (102) is fixedly arranged at the top inner wall of the main rod (1). A plurality of U-shaped seats (103) are fixedly arranged on the outer wall of the bottom of the fixing ring (102). A fixing rod (104) is fixedly arranged on the inner wall of each U-shaped seat (103). A shaft rod (105) is rotatably arranged on the outer wall of each fixing rod (104). A limiting clamping plate (106) is fixedly arranged on the outer wall of each shaft rod (105). A plate groove (107) is formed in the outer wall of each limiting clamping plate (106). A torsion spring (108) is arranged on the outer wall of each shaft rod (105). One end of each torsion spring (108) is fixedly connected to the outer wall of the corresponding limiting clamping plate (106), and the other end of each torsion spring (108) is fixedly connected to the inner wall of the corresponding U-shaped seat (103). A support rod (112) is inserted into the inner wall of each movable hole (110). The outer ends of the support rods (112) located outside the main rod (1) are fixedly connected to the same control ring (113). A plurality of compression springs (111) are fixedly arranged between the control ring (113) and the main rod (1). An installation seat (6) is fixedly arranged on the outer wall of the bottom of the main rod (1). A placement groove (602) is formed in the outer wall of the top of the installation seat (6). A movable groove (603) is formed in the inner wall of the placement groove (602). Seat holes (601) are formed in the outer walls of both sides of the installation seat (6). A connecting rod (604) is movably inserted into the inner wall of each seat hole (601). A control button (606) is fixedly arranged at the end of each connecting rod (604) away from the installation seat (6). An elastic spring (605) is fixedly arranged between each control button (606) and the installation seat (6). An arc-shaped clamping plate (607) is fixedly arranged on the outer wall of the other end of each connecting rod (604). An arc-shaped clamping plate (608) is fixedly arranged on the inner wall of each arc-shaped clamping plate (607). A rod groove (201) is formed in the outer wall of the top of the auxiliary rod (2). A buffer spring (202) is fixedly arranged at the bottom of the inner wall of the rod groove (201). The other end of the buffer spring (202) is fixedly connected to a buffer plate (203). The outer wall of the buffer plate (203) is slidably connected to the inner wall of the rod groove (201). A fixing bolt (7) is threadedly connected to the inner wall of the rod groove (201).

2. The large-sized spiral deployable antenna according to claim 1, wherein: A lower base (3) is inserted into the placement groove (602). Two card slots (302) are formed in the outer wall of the lower base (3). A helical antenna (5) is fixedly arranged on the outer wall of the top of the lower base (3). An upper base (4) is fixedly arranged on the outer wall of the other end of the helical antenna (5).

3. The large-sized spiral deployable antenna according to claim 1, wherein: A first limiting ring (204) and a second limiting ring (205) are fixedly arranged on the outer wall of the auxiliary rod (2). The first limiting ring (204) is located above the second limiting ring (205).

4. A large-sized spiral deployable antenna according to claim 1, characterized in that: A rubber pad (109) is fixedly arranged on the outer wall of each of the limiting clamping plates (106) away from the corresponding U-shaped seat (103). The moving holes (110) correspond to the limiting clamping plates (106) one by one, and the support rods (112) correspond to the compression springs (111) one by one. Each of the support rods (112) is respectively located inside the corresponding compression spring (111).

5. A large-sized helical deployable antenna according to claim 1, characterized in that: Each of the connecting rods (604) is respectively located inside the corresponding elastic spring (605), and each of the arc-shaped clamping plates (607) is located inside the moving groove (603).

6. The large-sized spiral deployable antenna according to claim 2, wherein: The clamping grooves (302) correspond to the arc-shaped clamping plates (607) one by one, and the arc-shaped clamping plates (608) are inserted into the clamping grooves (302).

7. A large-sized spiral deployable antenna according to claim 2, wherein: A first socket hole (301) is formed in the top outer wall of the lower base (3). The diameter of the first socket hole (301) is the same as the diameter of the main rod (1). The inner wall of the first socket hole (301) is inserted into the main rod (1). A second socket hole (401) is formed in the outer wall of the upper base (4). The diameter of the second socket hole (401) is the same as the diameter of the auxiliary rod (2). The inner wall of the second socket hole (401) is inserted into the auxiliary rod (2).

8. A large-sized spiral deployable antenna according to claim 1, characterized in that: The upper base (4) is located between the fixing bolt (7) and the first limiting ring (204). The diameter of the fixing bolt (7) is larger than the diameter of the second socket hole (401). Turning the fixing bolt (7) can be used to limit the upper base (4).

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