Cylindrical four-arm helical north-seeking antenna

Abstract

The application discloses a cylindrical four-arm spiral Beidou antenna, and relates to the technical field of spiral Beidou antennas.The cylindrical four-arm spiral Beidou antenna comprises a fixing base, a rotating table is rotatably installed on the top of the fixing base, a limiting groove is formed in the inner wall of the rotating table, and an adjusting device is further arranged.The adjusting device comprises a sleeve, a rotating shaft, a carrying plate, an antenna body, a handle, a first spring, a limiting plate, a loading plate, a long plate and a first spring piece.A user holds the handle with both hands and moves the handle towards the carrying plate.The handle extrudes the first spring during the movement.The sleeve is fixedly penetrated through the inner and outer walls of the rotating table.The rotating shaft is rotatably installed on the inner wall of the sleeve.The carrying plate is fixedly installed on the circumferential surface of the rotating shaft.The carrying plate is automatically limited when the pushing force is slowly reduced by the user with both hands, so that unnecessary angular deflection of the antenna body during use is prevented, and the stability of signal reception is improved.

Description

Technical Field

[0001] This invention relates to the field of spiral BeiDou antenna technology, specifically a cylindrical four-arm spiral BeiDou antenna. Background Technology

[0002] The cylindrical four-arm spiral BeiDou antenna is an antenna used to receive and transmit signals from the BeiDou navigation system. The four-arm spiral antenna has omnidirectional radiation characteristics in the horizontal plane, which means that it can receive signals from different directions, adapting to the application needs of mobile devices.

[0003] Patent publication number CN217468758U relates to a rotatable elbow spiral Beidou antenna, including a fixing plate and threaded fixing holes. The threaded fixing holes are through-cut inside the fixing plate. A Bluetooth positioning beacon is embedded in the bottom of the fixing plate. A fixing rod is installed on the top of the fixing plate, and four sets of limiting holes are through-cut on the front of the fixing rod. This patent uses the fixing plate to install the Bluetooth positioning beacon, which is connected to an external Bluetooth receiver. Through its internal battery pack, the beacon transmits the device's location information to the external Bluetooth receiver in real time, allowing users to check the device's location in real time, preventing the device from being lost, and improving device security.

[0004] The aforementioned patent features a function to prevent the spiral antenna from being lost. A Bluetooth positioning beacon is embedded in the bottom of the fixing plate for real-time tracking and positioning of the spiral antenna. Users can monitor the position of the spiral antenna in real time through Bluetooth devices and quickly locate it. At the same time, the spiral antenna is installed on the top of the metal ball. Users can adjust the angle of the spiral antenna as needed to improve the signal reception effect of the spiral antenna. However, it is difficult to effectively fix the metal ball when adjusting the angle, which causes the spiral antenna to shift during the adjustment process, affecting the performance of the spiral antenna and the user experience. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a cylindrical four-arm spiral BeiDou antenna, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cylindrical four-arm spiral Beidou antenna, comprising a fixed base, a rotating platform rotatably mounted on the top of the fixed base, a limiting groove formed in the inner wall of the rotating platform, and an adjustment device; wherein, the adjustment device comprises a sleeve, a rotating shaft, a mounting plate, an antenna body, a grip rod, a first spring, a limiting plate, a loading plate, a long plate, and a first spring piece; the user grips the grip rod with both hands and pushes it towards the mounting plate, compressing the first spring during the movement; the sleeve is fixedly inserted through the inner and outer walls of the rotating platform. The rotating shaft is rotatably mounted on the inner wall of the sleeve. The mounting plate is fixedly mounted on the circumferential surface of the rotating shaft. The antenna body is fixedly mounted on the top of the mounting plate. The grip rod slides through the inner and outer walls of the mounting plate. The first spring is disposed between the grip rod and the mounting plate. The loading plate is fixedly mounted on the side of the mounting plate near the sleeve. The long plate is slidably mounted inside the loading plate. The first spring is disposed between the long plate and the loading plate. The limiting plate contacts the inner wall of the limiting groove. During movement, the surface of the limiting plate that contacts the limiting groove separates, thereby releasing the limiting effect applied by the rotating table on the rotation of the mounting plate.

[0007] According to the above technical solution, a sliding groove is provided on the loading plate, and a docking block is fixedly installed on the side of the long plate near the sliding groove. The docking block contacts the inner wall of the sliding groove. The limiting plate contacts the long plate during movement. The movement of the limiting plate applies a pushing force to the long plate, and the long plate moves towards the loading plate under the influence of the pushing force.

[0008] According to the above technical solution, a semi-circular groove is provided on the circumferential surface of the sleeve, and an arc surface is provided at one end of the long plate near the sleeve. The arc surface contacts the inner wall of the semi-circular groove. During movement, the arc surface of the long plate separates from the surface in contact with the semi-circular groove, and the limitation imposed by the sleeve on the rotation of the mounting plate is released.

[0009] According to the above technical solution, it also includes a protective device and a stabilizing device; the protective device includes a connecting plate, a hollow box, a lifting plate, a round tube, a second spring, a contact plate, a cylindrical rod, a rubber plate, and a second spring piece. The movement of the contact plate causes the lifting plate to move downward, and the movement of the lifting plate causes the cylindrical rod to move downward. The connecting plate is fixedly installed on the side of the rotating platform away from the grip, and the hollow box is fixedly installed on the side of the connecting plate away from the rotating platform. The lifting plate slides through the inner and outer walls of the hollow box. The round tube is fixedly installed at the bottom of the lifting plate. The second spring is disposed between the round tube and the hollow box. The contact plate rotates through the top of the lifting plate. The cylindrical rod is fixedly installed on the side of the lifting plate away from the connecting plate. The cylindrical rod slides through the inner and outer walls of the hollow box. The rubber plate slides on the inner wall of the hollow box. The second spring piece is disposed between the rubber plate and the hollow box. The top of the contact plate has an arc surface II. The circumferential surface of the antenna body contacts the arc surface II of the contact plate during rotation. The antenna body applies downward pressure to the arc surface II, and the contact plate moves downward under the influence of the pressure.

[0010] According to the above technical solution, a first spiral spring is provided between the contact plate and the lifting plate. As the antenna body rotates, the contact plate rotates. When the contact plate rotates, the first spiral spring is stretched. The bottom of the circular tube is provided with an inclined surface, and the end of the cylindrical rod away from the lifting plate is provided with a circular hole.

[0011] According to the above technical solution, the rubber plate has an arc surface three at one end near the round tube. The inclined surface one of the round tube contacts the arc surface three of the rubber plate during movement. The movement of the inclined surface one applies pressure to the arc surface three. The rubber plate moves towards the second spring piece under the influence of the pressure. The side of the rubber plate away from the second spring piece has an anti-slip groove.

[0012] According to the above technical solution, the stabilizing device includes a mounting frame, a connecting frame, a rotating plate, a stop plate, a convex block, a connecting rod, a telescopic plate, and a third spring. The cylindrical rod moves downward and contacts the top of the rotating plate. The cylindrical rod continues to move, applying downward pressure to the rotating plate. The rotating plate rotates downward under the influence of the pressure. The mounting frame is fixedly installed on the side of the hollow box away from the connecting plate. The connecting frame is fixedly installed on the inner wall of the mounting frame. The rotating plate is rotatably installed on the inner wall of the connecting frame. The stop plate is fixedly installed on the inner wall of the mounting frame. The convex block slides through the inner and outer walls of the mounting frame. The connecting rod is fixedly installed on the side of the convex block near the rotating plate. The telescopic plate slides through the inner and outer walls of the convex block. The third spring is disposed between the telescopic plate and the convex block. A second spiral spring is disposed between the rotating plate and the connecting frame. The rotating plate itself is elastic. The stop plate contacts the top of the rotating plate. When the rotating plate rotates, the contact surface between the rotating plate and the stop plate separates. At the same time, the rotating plate stretches the second spiral spring during rotation, and the second spiral spring deforms under the stretch.

[0013] According to the above technical solution, the mounting frame has an arc surface four on the side near the convex block, and the telescopic plate has an inclined surface two on the side near the arc surface four. The inclined surface two of the telescopic plate contacts the arc surface four during movement. The movement of the inclined surface two is resisted by the arc surface four. The telescopic plate moves towards the direction of the third spring piece due to the resistance. The inner wall of the mounting frame has a rectangular groove.

[0014] This invention provides a cylindrical four-arm spiral BeiDou antenna. It has the following advantages:

[0015] (1) The cylindrical four-arm spiral Beidou antenna has the arc surface and the semi-circular groove contact surfaces separated, the sleeve releases the limit applied to the rotation of the mounting plate, and the angle is adjusted by holding the handle with both hands to ensure the stability of operation and reduce the impact on the integrity of the antenna body due to improper operation. The arc surface and the inner wall of the semi-circular groove contact each other, so that the sleeve limits the rotation of the mounting plate. When the thrust is slowly reduced by both hands, the mounting plate is automatically limited to prevent unnecessary angle deflection of the antenna body during use, thereby improving the stability of signal reception.

[0016] (2) As the cylindrical four-arm spiral Beidou antenna rotates, the contact plate rotates. The contact plate automatically adapts to the angle of the antenna body and applies an upward supporting force, ensuring that the user can smoothly and effortlessly adjust the angle of the antenna body. Friction is generated between the moving tube and the anti-slip groove, which causes the rubber plate to apply additional resistance to the moving tube. The thrust applied by the second spring ensures that the anti-slip groove is in close contact with the tube, so that the rubber plate provides additional resistance, which helps to improve the ability to deal with emergencies and thus improve the safety of the user.

[0017] (3) The cylindrical four-arm spiral Beidou antenna, the No. 2 vortex spring returns to drive the rotating plate to rotate rapidly upward. The rotating plate vibrates when it collides with the abutment plate during rotation. The continuous vibration is generated by the intermittent collision between the rotating plate and the abutment plate, and then transmitted to the lifting plate through resonance, which helps to improve the smoothness of the lifting plate movement. The telescopic plate passes through the rectangular groove during movement, which limits the movement of the convex block. By actively pushing the convex block by the user, the docking rod contacts the inner wall of the circular hole, which helps to avoid the No. 2 spring affecting the stability of the lifting plate itself in the deformed state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram showing the position and structure of the rotary table and connecting plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the regulating device of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the positional structure of the semicircular groove and the long plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the protective device of the present invention;

[0024] Figure 7 This is a schematic diagram showing the position and structure of the telescopic plate and the No. 3 spring piece of the present invention;

[0025] Figure 8 This is a schematic diagram of the stabilizing device of the present invention.

[0026] In the diagram: 1. Fixed base; 2. Rotating table; 3. Sleeve; 4. Rotating shaft; 5. Mounting plate; 6. Antenna body; 7. Grip rod; 8. Spring No. 1; 9. Limiting plate; 10. Loading plate; 11. Long plate; 12. Spring No. 1; 121. Connecting plate; 122. Hollow box; 123. Lifting plate; 124. Round tube; 125. Spring No. 2; 126. Contact plate; 127. Cylindrical rod; 128. Rubber plate; 129. Spring No. 2; 131. Mounting frame; 132. Connecting frame; 133. Rotating plate; 134. Support plate; 135. Convex block; 136. Connecting rod; 137. Telescopic plate; 138. Spring No. 3. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-8One embodiment of the present invention is as follows: a cylindrical four-arm spiral Beidou antenna, including a fixed base 1, a rotating platform 2 rotatably mounted on the top of the fixed base 1, a limiting groove formed in the inner wall of the rotating platform 2, and an adjustment device; wherein, the adjustment device includes a sleeve 3, a rotating shaft 4, a mounting plate 5, an antenna body 6, a grip rod 7, a first spring 8, a limiting plate 9, a loading plate 10, a long plate 11, and a first spring piece 12, the sleeve 3 is fixedly inserted through the inner and outer walls of the rotating platform 2, the rotating shaft 4 is rotatably mounted on the inner wall of the sleeve 3, the mounting plate 5 is fixedly mounted on the circumferential surface of the rotating shaft 4, and the antenna body... The antenna body 6 is fixedly installed on the top of the mounting plate 5. The grip rod 7 slides through the inner and outer walls of the mounting plate 5. A first spring 8 is disposed between the grip rod 7 and the mounting plate 5. The loading plate 10 is fixedly installed on the side of the mounting plate 5 near the sleeve 3. The long plate 11 is slidably installed inside the loading plate 10. A first spring piece 12 is disposed between the long plate 11 and the loading plate 10. The limiting plate 9 contacts the inner wall of the limiting groove. By gripping the grip rod 7 with both hands, the stability of the operation is improved. The gripping with both hands increases the control force on the grip rod 7, reducing the impact on the integrity of the antenna body 6 due to improper operation.

[0029] The loading plate 10 has a sliding groove, and a docking block is fixedly installed on the side of the long plate 11 near the sliding groove. The docking block contacts the inner wall of the sliding groove. By opening the sliding groove, the long plate 11 can move stably as a whole when one side of the long plate 11 is pushed, which helps to improve the stability of use.

[0030] The sleeve 3 has a semi-circular groove on its circumferential surface, and the long plate 11 has an arc surface at one end near the sleeve 3. The arc surface contacts the inner wall of the semi-circular groove. When the hand pushing force is slowly reduced, the mounting plate 5 is automatically limited to prevent unnecessary angular deflection of the antenna body 6 during use, thereby improving the stability of signal reception.

[0031] In this embodiment, during operation, the user holds the grip rod 7 with both hands and pushes it to move towards the mounting plate 5. During this movement, the grip rod 7 compresses the first spring 8, causing it to deform. Simultaneously, the movement of the grip rod 7 drives the limiting plate 9 to move towards the mounting plate 5. As the limiting plate 9 moves, the surface in contact with the limiting groove separates, releasing the limiting effect exerted by the rotary table 2 on the rotation of the mounting plate 5. During this movement, the limiting plate 9 contacts the side of the long plate 11 away from the loading plate 10. The movement of the limiting plate 9 applies a pushing force to the long plate 11, causing the long plate 11 to move towards the mounting plate. The long plate 11 moves in five directions. During the movement, it presses against the first spring piece 12. The first spring piece 12 deforms under the pressure. Under its own elasticity, the deformed first spring piece 12 exerts a reaction force on the long plate 11, requiring the user to apply a stable pushing force to the grip rod 7 during adjustment. The arc surface of the long plate 11 separates from the surface in contact with the semi-circular groove during movement. The limitation imposed by the sleeve 3 on the rotation of the mounting plate 5 is released. By gripping the grip rod 7 with both hands, the stability of the operation is ensured. The two-hand grip increases the control force on the grip rod 7 and reduces the damage to the integrity of the antenna body 6 caused by improper operation. When the user pulls the handle 7 away from the rotating platform 2, the movement of the handle 7 causes the mounting plate 5 to rotate, which in turn causes the rotating shaft 4 to rotate. Simultaneously, the end of the mounting plate 5 closest to the handle 7 rotates upwards, while the end furthest from the handle 7 rotates downwards. This causes the mounting plate 5 to rotate the antenna body 6 for angle adjustment. Simultaneously, the rotation of the mounting plate 5 causes the loading plate 10 to move away from the rotating platform 2, which in turn causes the long plate 11 to move away from the rotating platform 2. After the angle adjustment is complete, the user slowly reduces the applied thrust, causing deformation... Spring 8 returns to its original position, causing the gripping rod 7 to move away from the mounting plate 5. The movement of the gripping rod 7 causes the limiting plate 9 to move away from the long plate 11. The thrust exerted by the limiting plate 9 on the long plate 11 gradually decreases, causing the deformed spring piece 12 to return to its original position, causing the long plate 11 to move away from the mounting plate 10. During the movement, the arc surface 1 contacts the inner wall of the semi-circular groove, causing the sleeve 3 to limit the rotation of the mounting plate 5. By automatically limiting the mounting plate 5, unnecessary angular deflection of the antenna body 6 during use is prevented, thereby improving the stability of signal reception.

[0032] Please see Figures 1-8Based on the above embodiments, another embodiment of the present invention further includes a protective device and a stabilizing device; the protective device includes a connecting plate 121, a hollow box 122, a lifting plate 123, a round tube 124, a second spring 125, a contact plate 126, a cylindrical rod 127, a rubber plate 128, and a second spring 129. The connecting plate 121 is fixedly installed on the side of the rotating platform 2 away from the grip 7, the hollow box 122 is fixedly installed on the side of the connecting plate 121 away from the rotating platform 2, the lifting plate 123 slides through the inner and outer walls of the hollow box 122, the round tube 124 is fixedly installed at the bottom of the lifting plate 123, and the second spring 125... Spring 125 is disposed between round tube 124 and hollow box 122. Contact plate 126 rotates through the top of lifting plate 123. Cylindrical rod 127 is fixedly installed on the side of lifting plate 123 away from connecting plate 121. Cylindrical rod 127 slides through the inner and outer walls of hollow box 122. Rubber plate 128 is slidably installed on the inner wall of hollow box 122. Second spring piece 129 is disposed between rubber plate 128 and hollow box 122. The top of contact plate 126 has an arc surface. The contact plate 126 applies a supporting force to antenna body 6, ensuring that the user can smoothly and effortlessly adjust the angle of antenna body 6.

[0033] A first spiral spring is provided between the contact plate 126 and the lifting plate 123. The bottom of the round tube 124 is provided with an inclined surface. The end of the cylindrical rod 127 away from the lifting plate 123 is provided with a round hole. By providing the first spiral spring, the contact plate 126 can automatically adapt to the angle when the antenna body 6 rotates, thereby maintaining a stable support force.

[0034] The rubber plate 128 has an arc surface three at one end near the round tube 124, and an anti-slip groove is provided on the side of the rubber plate 128 away from the second spring piece 129. When the rubber plate 128 rubs against the round tube 124 through the anti-slip groove, it applies additional resistance, which helps to improve the ability to deal with emergencies and thus improves the safety during use.

[0035] The stabilizing device includes a mounting frame 131, a connecting frame 132, a rotating plate 133, a stop plate 134, a protruding block 135, a connecting rod 136, a telescopic plate 137, and a third spring piece 138. The mounting frame 131 is fixedly installed on the side of the hollow box 122 away from the connecting plate 121. The connecting frame 132 is fixedly installed on the inner wall of the mounting frame 131. The rotating plate 133 is rotatably installed on the inner wall of the connecting frame 132. The stop plate 134 is fixedly installed on the inner wall of the mounting frame 131. The protruding block 135 slides through the inner and outer walls of the mounting frame 131. The connecting rod 136... The telescopic plate 137 is fixedly installed on the side of the convex block 135 near the rotating plate 133. The telescopic plate 137 slides through the inner and outer walls of the convex block 135. The third spring piece 138 is set between the telescopic plate 137 and the convex block 135. The second spiral spring is set between the rotating plate 133 and the connecting frame 132. The rotating plate 133 itself is elastic. The abutment plate 134 contacts the top of the rotating plate 133. The intermittent collision between the rotating plate 133 and the abutment plate 134 generates continuous vibration, which is then transmitted to the lifting plate 123 through resonance, which helps to improve the smoothness of the movement of the lifting plate 123.

[0036] The mounting frame 131 has an arc surface four on the side near the convex block 135, and the telescopic plate 137 has an inclined surface two on the side near the arc surface four. The inner wall of the mounting frame 131 has a rectangular groove. By pushing the convex block 135, the connecting rod 136 and the round hole are made into contact, which helps to prevent the deformed second spring 125 from affecting the stability of the lifting plate 123.

[0037] In this embodiment, during operation, the circumferential surface of the antenna body 6 contacts the arc surface of the contact plate 126 during rotation. The antenna body 6 applies downward pressure to the arc surface, causing the contact plate 126 to move downward under the influence of the pressure. The movement of the contact plate 126 drives the lifting plate 123 to move downward, which in turn drives the cylindrical rod 127 to move downward. Simultaneously, the movement of the lifting plate 123 drives the circular tube 124 to move downward. During its movement, the circular tube 124 compresses the second spring 125, causing it to deform. Simultaneously, the second spring 125, under its own elasticity, applies a reaction force to the circular tube 124. The circular tube 124 transmits this reaction force to the lifting plate 123, slowing down the downward movement of the lifting plate 123. This allows the arc surface to apply an upward supporting force to the rotating antenna body 6. As the antenna body 6 rotates, the contact plate 126 rotates, pulling... The first spiral spring extends and applies an upward supporting force to the antenna body 6 through the contact plate 126, ensuring that the user can smoothly and effortlessly adjust the angle of the antenna body 6. The inclined surface of the circular tube 124 contacts the arc surface of the rubber plate 128 during movement. The movement of the inclined surface applies pressure to the arc surface, and the rubber plate 128 moves towards the second spring piece 129 under the influence of the pressure. During the movement, the rubber plate 128 squeezes the second spring piece 129, which deforms under the pressure. The deformed second spring piece 129 applies a pushing force to the rubber plate 128. Under the influence of the pushing force, the anti-slip groove of the rubber plate 128 is in close contact with the circular tube 124. As the circular tube 124 continues to move, friction is generated between it and the anti-slip groove, which makes the rubber plate 128 apply additional resistance to the moving circular tube 124. Applying additional resistance through the friction between the anti-slip groove and the circular tube 124 helps to improve the ability to deal with emergencies, thereby improving the safety during use.

[0038] The cylindrical rod 127 moves downward and contacts the top of the rotating plate 133. The cylindrical rod 127 continues to move, applying downward pressure to the rotating plate 133. Under this pressure, the rotating plate 133 rotates downward. During rotation, the surface of the rotating plate 133 that contacts the abutment plate 134 separates. Simultaneously, the rotating plate 133 stretches the second spiral spring during rotation. The second spiral spring deforms under this stretching, storing energy through its elasticity. When the cylindrical rod 127 separates from the rotating plate 133, the second spiral spring returns to its original state, causing the rotating plate 133 to rotate rapidly upward. During rotation, the rotating plate 133 contacts the abutment plate 134. The collision of plate 134 generates vibration. When cylindrical rod 127 moves upward to reset, the bottom of cylindrical rod 127 and rotating plate 133 come into contact. Because rotating plate 133 is blocked by the abutment plate 134, it cannot rotate upward, causing cylindrical rod 127 to continue moving and pressing rotating plate 133. Rotating plate 133 deforms under pressure. When cylindrical rod 127 and rotating plate 133 separate, rotating plate 133 recovers under its own elasticity. The intermittent collision between rotating plate 133 and abutment plate 134 generates continuous vibration, which is then transmitted to lifting plate 123 through resonance, helping to improve the smoothness of the movement of lifting plate 123. The user manually pushes the convex block 135 towards the mounting frame 131. The movement of the convex block 135 causes the connecting rod 136 to move towards the cylindrical rod 127. During this movement, the connecting rod 136 contacts the inner wall of the circular hole, thus limiting the movement of the lifting plate 123. Simultaneously, the movement of the convex block 135 causes the telescopic plate 137 to move towards the mounting frame 131. During this movement, the inclined surface two of the telescopic plate 137 contacts the arc surface four, and the movement of the inclined surface two is resisted by the arc surface four. Due to this resistance, the telescopic plate 137 moves towards the third spring piece 138. 7. During movement, the third spring piece 138 is squeezed and deformed. At the same time, the telescopic plate 137 contacts the inner wall of the mounting frame 131. The telescopic plate 137 continues to move and separates from the inner wall of the mounting frame 131. The deformed third spring piece 138 recovers and drives the telescopic plate 137 to move away from the convex block 135. During the movement, the telescopic plate 137 passes through the rectangular groove, which restricts the movement of the convex block 135. By pushing the convex block 135, the docking rod 136 contacts the round hole, which helps to prevent the deformed second spring 125 from affecting the stability of the lifting plate 123.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylindrical four-arm spiral Beidou antenna, comprising a fixed base (1), wherein a rotating platform (2) is rotatably mounted on the top of the fixed base (1), and a limiting groove is formed on the inner wall of the rotating platform (2), characterized in that: It also includes adjustment devices, protective devices, and stabilizing devices; The adjustment device includes a sleeve (3), a rotating shaft (4), a mounting plate (5), an antenna body (6), a grip (7), a first spring (8), a limiting plate (9), a loading plate (10), a long plate (11), and a first spring piece (12). The sleeve (3) is fixedly inserted through the inner and outer walls of the rotating platform (2). The rotating shaft (4) is rotatably mounted on the inner wall of the sleeve (3). The mounting plate (5) is fixedly mounted on the circumferential surface of the rotating shaft (4). The antenna body (6) is fixedly mounted on... At the top of the mounting plate (5), the grip rod (7) slides through the inner and outer walls of the mounting plate (5), the first spring (8) is disposed between the grip rod (7) and the mounting plate (5), the loading plate (10) is fixedly installed on the side of the mounting plate (5) near the sleeve (3), the long plate (11) is slidably installed inside the loading plate (10), the first spring piece (12) is disposed between the long plate (11) and the loading plate (10), and the limiting plate (9) contacts the inner wall of the limiting groove.

2. A cylindrical four-arm spiral Beidou antenna according to claim 1, characterized in that: The loading plate (10) has a groove, and a docking block is fixedly installed on the side of the long plate (11) near the groove, and the docking block is in contact with the inner wall of the groove.

3. A cylindrical four-arm spiral Beidou antenna according to claim 2, characterized in that: The sleeve (3) has a semi-circular groove on its circumferential surface, and the long plate (11) has an arc surface at one end near the sleeve (3), which is in contact with the inner wall of the semi-circular groove.

4. A cylindrical four-arm spiral Beidou antenna according to claim 3, characterized in that: The protective device includes a connecting plate (121), a hollow box (122), a lifting plate (123), a round tube (124), a second spring (125), a contact plate (126), a cylindrical rod (127), a rubber plate (128), and a second spring piece (129). The connecting plate (121) is fixedly installed on the side of the rotating platform (2) away from the handle (7). The hollow box (122) is fixedly installed on the side of the connecting plate (121) away from the rotating platform (2). The lifting plate (123) slides through the inner and outer walls of the hollow box (122). The round tube (124) is fixedly installed on the lifting plate (123). At the bottom, the second spring (125) is set between the round tube (124) and the hollow box (122). The contact plate (126) rotates through the top of the lifting plate (123). The cylindrical rod (127) is fixedly installed on the side of the lifting plate (123) away from the connecting plate (121). The cylindrical rod (127) slides through the inner and outer walls of the hollow box (122). The rubber plate (128) slides on the inner wall of the hollow box (122). The second spring piece (129) is set between the rubber plate (128) and the hollow box (122). The top of the contact plate (126) is provided with an arc surface.

5. A cylindrical four-arm spiral Beidou antenna according to claim 4, characterized in that: A spiral spring is provided between the contact plate (126) and the lifting plate (123). The bottom of the round tube (124) is provided with an inclined surface. The end of the cylindrical rod (127) away from the lifting plate (123) is provided with a round hole.

6. A cylindrical four-arm spiral Beidou antenna according to claim 5, characterized in that: The rubber plate (128) has an arc surface three at one end near the round tube (124), and the side of the rubber plate (128) away from the second spring piece (129) has an anti-slip groove.

7. A cylindrical four-arm spiral Beidou antenna according to claim 6, characterized in that: The stabilizing device includes a mounting frame (131), a connecting frame (132), a rotating plate (133), a stop plate (134), a convex block (135), a connecting rod (136), a telescopic plate (137), and a third spring piece (138). The mounting frame (131) is fixedly installed on the side of the hollow box (122) away from the connecting plate (121). The connecting frame (132) is fixedly installed on the inner wall of the mounting frame (131). The rotating plate (133) is rotatably installed on the inner wall of the connecting frame (132). The stop plate (134) is fixedly installed on the inner wall of the mounting frame (131). The convex block (135) slides through the inner and outer walls of the mounting frame (131), the docking rod (136) is fixedly installed on the side of the convex block (135) near the rotating plate (133), the telescopic plate (137) slides through the inner and outer walls of the convex block (135), the third spring piece (138) is disposed between the telescopic plate (137) and the convex block (135), a second spiral spring is disposed between the rotating plate (133) and the connecting frame (132), the rotating plate (133) itself is elastic, and the abutment plate (134) contacts the top of the rotating plate (133).

8. A cylindrical four-arm spiral Beidou antenna according to claim 7, characterized in that: The mounting frame (131) has an arc surface four on the side near the convex block (135), the telescopic plate (137) has an inclined surface two on the side near the arc surface four, and the inner wall of the mounting frame (131) has a rectangular groove.

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