Large vehicle-mounted antenna lifting platform

Abstract

The invention provides a large vehicle-mounted antenna lifting platform, and belongs to the technical field of antenna lifting platforms. Comprising a carrying table and a tower body, the tower body is arranged above the carrying table, the tower body is formed by sleeving a main tower, an auxiliary tower and a plurality of sub-towers from outside to inside, a lodging device is arranged at the top of the carrying table, and the telescopic end of the lodging device is hinged to the main tower to drive the tower body to rotate to be in a vertical or horizontal state above the carrying table; the lifting mechanism is used for driving the tower body to stretch out and draw back, and the lifting mechanism is connected with the main tower; and the outer side of the main tower is fixedly connected with a winding device. The sliding mechanism composed of the rail and the sliding block is arranged among the main tower, the auxiliary tower and the sub-tower to replace a guide piece of a traditional U-shaped pulley, when the tower body stretches out and draws back, the rail slides on the inner side of the sliding block, lateral constraint can be provided for stretching out and drawing back of the tower body, the movement gap can be reduced, and the movement efficiency is improved. And transverse shaking of the tower body under the action of a load or wind power can be inhibited, so that the stability of the antenna working platform is ensured.

Description

Technical Field

[0001] This invention relates to the field of antenna lifting platform technology, and in particular to a large vehicle-mounted antenna lifting platform. Background Technology

[0002] Vehicle-mounted antenna lifting platforms are used in mobile communications, emergency response, and other fields to quickly erect antennas. Currently, most vehicle-mounted antenna lifting platforms adopt a telescoping tower structure. The tower extension and retraction are guided by U-shaped pulleys in conjunction with the tower column, and each section of the tower is pulled out in sequence by winding steel wire ropes to complete the antenna erection.

[0003] Due to the poor precision of the U-shaped pulley guide structure, the gap between adjacent towers is large. After the tower is extended and erected, it sways significantly under the influence of gravity or wind. Furthermore, the steel wire rope has elastic elongation characteristics and will deform under load. The method of extending the tower entirely by the traction of the steel wire rope will lead to inaccurate tower extension and positioning, making it difficult to stably stop at the preset height. Therefore, this application provides a large vehicle-mounted antenna lifting platform to meet the requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a large vehicle-mounted antenna lifting platform to solve the aforementioned problems. By installing a sliding mechanism consisting of rails and sliders between the main tower, secondary tower, and sub-tower, replacing the traditional U-shaped pulley guide, the rails slide inside the sliders during tower extension and retraction, providing lateral constraint for the tower's extension and retraction. This not only reduces movement gaps but also suppresses lateral swaying of the tower under load or wind force, thus ensuring the stability of the antenna working platform. The extension and retraction of the secondary tower is driven by a rotating screw in conjunction with a lifting nut, providing rigid support after extension and retraction, improving its positioning accuracy. This solves the problems mentioned in the background art, such as large gaps between adjacent towers, significant swaying under gravity or wind force after the tower is extended and erected, and inaccurate positioning caused by steel cable deformation.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A large vehicle-mounted antenna lifting platform includes a platform and a tower. The tower is positioned above the platform and consists of a main tower, a secondary tower, and several sub-towers connected from the outside in. The top of the platform is equipped with a tilting device, the telescopic end of which is hinged to the main tower, causing the tower to rotate above the platform to an upright or horizontal position. A lifting mechanism is used to extend and retract the tower and is connected to the main tower. A cable winding device is fixedly connected to the outside of the main tower, which releases or winds up the cable as the tower extends and retracts to match the tower's extension and retraction.

[0006] A sliding mechanism is provided between the main tower, the secondary tower, and the sub-tower. The sliding mechanism includes a track and a slider. The track is located on the outside of the tower column, and the slider is located on the inside of the tower column. When the tower body extends or retracts, the track of the inner tower slides along the slider of the outer tower. When the tower body extends or retracts, the track slides on the inside of the slider. This can provide lateral constraints for the extension and retraction of the tower body, thereby reducing the movement gap and suppressing the lateral sway of the tower body under load or wind force.

[0007] The lifting mechanism includes a gearbox fixed to the bottom of the main tower. A drive motor is fixedly connected to one side of the main tower. A worm gear is fixedly connected to the output shaft of the drive motor. The worm gear meshes with a worm wheel inside the gearbox. A lead screw is fixedly connected to the output shaft of the gearbox. This structure drives the extension and retraction of the secondary tower, which can provide rigid support for the secondary tower and solve the displacement problem caused by the elastic deformation of the wire rope.

[0008] The cable winding device includes a frame fixed to the outside of the main tower, a cable winding reel rotatably connected inside the frame, and a torque motor installed inside the cable winding reel to provide winding force. When the tower retracts, the torque motor drives the cable winding reel to wind up the cable. By providing different torques through the torque motor, the cable can be automatically and synchronously wound up when the tower retracts, which facilitates the overall storage of the equipment.

[0009] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, the large vehicle-mounted antenna lifting platform provided in this application is equipped with a sliding mechanism consisting of rails and sliders between the main tower, the secondary tower and the sub-tower, replacing the guide component of the traditional U-shaped pulley. When the tower body extends and retracts, the rail slides inside the slider, which can provide lateral constraints for the extension and retraction of the tower body. This can not only reduce the movement gap, but also suppress the lateral sway of the tower body under load or wind force, thereby ensuring the stability of the antenna working platform. The secondary tower is extended and retracted by rotating the lead screw and lifting nut, which provides rigid support after extension and retraction, improving its positioning accuracy. At the same time, with the cooperation of the speed-increasing gear set and handwheel, the extension and retraction of the tower can also be achieved manually, which can improve the flexibility of antenna installation. It is worth mentioning that a winding device is installed on the outside of the main tower, and a torque motor is installed on the shaft of the winding reel. When the tower extends and drives the winding reel to rotate and unwind the cable, the torque motor winds the cable around the shaft tightly. Then, when the tower retracts, it can drive the winding reel to reverse and wind up the cable, so as to realize the automatic synchronous winding and unwinding of the cable. Attached Figure Description

[0010] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0011] Figure 1 This is a schematic diagram of the tower body of the present invention when it is upright; Figure 2 For the present invention Figure 1 Top view; Figure 3 This is a three-dimensional structural diagram of the bracket of the present invention; Figure 4 This is a schematic diagram of the tower body of the present invention when it is horizontal; Figure 5 This is a schematic diagram showing the connection between the main tower and the lifting mechanism of the present invention; Figure 6 This is a frontal view of the main tower of the present invention; Figure 7 This is a three-dimensional structural diagram of the secondary tower of the present invention; Figure 8 This is a frontal view of the secondary tower of the present invention; Figure 9 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 10 This is a top view of the tower body after it has been contracted according to the present invention; Figure 11 For the present invention Figure 10 Enlarged view of point B in the middle.

[0012] Figure label: 1. Platform; 101. First bracket; 102. Second bracket; 103. Tower end bracket; 104. Support; 1041. Limit motor; 1042. Locking mechanism; 2. Tilting device; 3. Tower body; 321. Lifting nut; 322. Limit block; 31. Main tower; 32. Auxiliary tower; 4. Lifting mechanism; 41. Gearbox; 42. Drive motor; 43. Worm gear; 44. Lead screw; 45. Speed-increasing gear set; 46. Handwheel; 5. Winding device; 7. Track; 8. Slider; 9. Limit hook; 10. Insert column; 11. Guide rope pulley.

[0013] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0014] The following is a detailed description of a large vehicle-mounted antenna lifting platform provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0015] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0016] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0017] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0018] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0019] like Figures 1 to 4As shown, an embodiment of the present invention provides a large vehicle-mounted antenna lifting platform, including a platform 1 and a tower 3. The tower 3 is positioned above the platform 1. Supports 104 are symmetrically arranged on the top of the platform 1. The tower 3 is rotatably positioned between two supports 104. Each support 104 has a V-shaped structure and a bearing seat at its top. The rotating shaft on the tower 3 is installed within the bearing seat. The tower 3 is composed of a main tower 31, a secondary tower 32, and several sub-towers connected from the outside in. Four sub-towers are provided. When the secondary tower 32 and all sub-towers are fully extended, the total length of the tower 3 is approximately 30 meters. The retracted length of the tower 3 is less than 8.5 meters, thus facilitating transportation and antenna installation. The top of the platform 1 is equipped with... The platform 1 is equipped with a tilting device 2. The top of the platform 1 is also provided with a first bracket 101 and a second bracket 102 for installing the tilting device 2. The tilting device 2 is installed between the first bracket 101 and the two second brackets 102 to ensure its stability during operation. The telescopic end of the tilting device 2 is hinged to the main tower 31, which drives the tower body 3 to rotate to an upright or horizontal state above the platform 1. The top of the platform 1 is fixedly connected to the tower end bracket 103. When the tower body 3 is placed horizontally, its end is placed on the tower end bracket 103. The top of the tower end bracket 103 is provided with a groove that matches the tower end. When the tower body 3 is laid flat, its end falls into the corresponding groove, which can prevent it from slipping and shaking during transportation. A limit motor 1041 is fixedly connected to the bracket 104. A locking mechanism 1042 is fixedly connected to the output end of the limit motor 1041. It is used to insert into the corresponding hole of the main tower 31 to lock the tower body 3 and prevent it from rotating. The locking mechanism 1042 is provided with a shaft pin. By driving the locking mechanism 1042 through the limit motor 1041, the shaft pin inside can be extended and inserted into the corresponding hole of the main tower 31, thereby improving the stability of the entire tower body 3.

[0020] In this embodiment, as Figures 7 to 9 As shown, a sliding mechanism is provided between the main tower 31, the secondary tower 32, and the sub-towers. The sliding mechanism includes a track 7 and a slider 8. The track 7 is located on the outside of the tower column, and the slider 8 is located on the inside of the tower column. When the tower body 3 extends or retracts, the track 7 of the inner tower slides along the slider 8 of the outer tower. Each tower body is provided with four columns. Since the main tower 31 does not need to extend or retract, no track 7 is provided on the outside of its columns, and no extension component is provided inside the central sub-tower, so no slider 8 is provided on the inside of its columns. The outer sides of the columns of the secondary tower 32 and the other sub-towers are provided with track 7, and the inside of the columns are provided with slider 8. After the tower body 3 is assembled, the slider 8 on the outer tower column slides into the track 7 on the inner tower column. Through this design, the extension and retraction paths of the secondary tower 32 and the sub-towers can be constrained. like Figure 10As shown, the tops of the main tower 31, secondary tower 32, and sub-tower are all equipped with limit hooks 9 and inserts 10. When the tower body 3 retracts, the limit hooks 9 are inserted into the outside of the inserts 10. The inserts 10 are located at the top of the column, and the limit hooks 9 are located on the outside of the column. After the tower body 3 retracts, the limit hooks 9 on the inner tower body column are inserted into the inserts 10 on the outer tower body. Through this design, the end assembly of the retracted tower body can be combined to ensure the integrity of the end of the tower body 3 and improve the stability of the tower body 3 after retraction.

[0021] In this embodiment, as Figure 5 and Figure 8 As shown, the lifting mechanism 4 is used to drive the tower body 3 to extend and retract. The lifting mechanism 4 is connected to the main tower 31 and includes a gearbox 41 fixed to the bottom of the main tower 31. A drive motor 42 is fixedly connected to one side of the main tower 31. A worm gear 43 is fixedly connected to the output shaft of the drive motor 42. The worm gear 43 meshes with a worm wheel inside the gearbox 41. A lead screw 44 is fixedly connected to the output shaft of the gearbox 41. A lifting nut 321 is fixedly connected to the bottom of the auxiliary tower 32. The lifting nut 321 is threadedly connected to the lead screw 44. When the lead screw 44 rotates, it engages with the lifting nut. 321 drives the secondary tower 32 to extend and retract. Through the drive motor 42, worm gear 43 and worm wheel, the lead screw 44 can be rotated. During this process, the lead screw 44, together with the lifting nut 321, drives the secondary tower 32 to rise and fall. The drive motor 42 is equipped with an encoder to detect the rotation angle or number of revolutions of the drive motor 42 in real time. The controller accurately controls the lifting position of the secondary tower 32 according to the feedback signal of the encoder, thereby improving the accuracy of the extension and retraction of the tower body 3. The bottom of the secondary tower 32 is fixedly connected to a limit block 322 to limit the extension and retraction stroke of the secondary tower 32. A speed-increasing gear set 45 is provided on the side of the main tower 31 away from the drive motor 42. The output gear of the speed-increasing gear set 45 is fixedly sleeved on the outside of the worm gear 43. A handwheel 46 is provided on one side of the main tower 31 to drive the speed-increasing gear set 45 to rotate. The speed-increasing gear set 45 is composed of multiple sets of small gears and large gears meshing together. The handwheel 46 drives the speed-increasing gear set 45 and the worm gear 43 to rotate. In the event that power is unavailable, the tower body 3 can be extended or retracted manually to meet the needs of antenna erection or storage.

[0022] like Figure 7 and Figure 9 As shown, the top and bottom of the secondary tower 32 and multiple sub-towers are symmetrically fixedly connected with guide rope pulleys 11, and the corresponding guide rope pulleys 11 are connected in series by steel wire ropes, which are used to make the sub-towers and secondary tower 32 extend and retract synchronously. Since the sub-towers and secondary tower 32 are connected in series by steel wire ropes, when the secondary tower 32 rises and falls, it pulls the steel wire ropes, and under the traction of the guide rope pulleys 11, it drives multiple sub-towers to move synchronously, so as to realize the synchronous extension and retraction of the tower body 3.

[0023] like Figure 5 and Figure 6 As shown, a cable winding device 5 is fixedly connected to the outside of the main tower 31. The cable winding device 5 releases or winds up the cable as the tower body 3 extends and retracts to match the extension and retraction of the tower body 3. The cable winding device 5 includes a frame fixed to the outside of the main tower 31. A cable winding reel is rotatably connected inside the frame, and a torque motor (not shown in the figure) is installed inside the cable winding reel to provide winding force. When the tower body 3 retracts, the torque motor drives the cable winding reel to wind up the cable. An installation platform is provided on the top of the central sub-tower, and a cable routing frame is provided on one side of the installation platform. The cable on the cable winding reel passes through the cable routing frame and connects to the antenna. When the tower body 3 rises, the cable wound on the cable winding reel is released under the action of traction force. After the tower body 3 is erected, the torque motor begins to wind around the shaft to prepare for winding up the cable. When the tower body 3 descends, the torque motor starts to work and drives the cable winding reel to wind up the cable. To reduce the wear of the cable during the lifting and lowering process of the tower body 3, rubber pads or pulley structures are added at corresponding positions on the outside of the tower body 3 to protect the cable.

[0024] Working principle of the invention: After the carrying platform is positioned and leveled, first release the manual locking device in the transportation state, start the tilting device 2 to retract its telescopic end, drive the entire tower body 3 to rotate around the rotating shaft on the support 104, and flip from the horizontal state to the vertical state at a constant speed. When the tower body 3 rotates to the vertical state perpendicular to the platform 1, it touches the limit switch, the tilting device 2 stops working, and then the limit motor 1041 on the support 104 starts, driving the shaft pin in the locking mechanism 1042 to extend and insert into the corresponding hole of the main tower 31 to complete the mechanical locking and prevent the tower body 3 from rotating. The drive motor 42 is started to drive the worm gear 43 and the worm wheel in the gearbox 41 to rotate. At this time, the lead screw 44 starts to rotate. The rotating lead screw 44 drives the lifting nut 321 and the secondary tower 32 to move, thereby pushing the secondary tower 32 to extend. When the secondary tower 32 is driven to rise by the lead screw 44, it pulls the wire rope to move. Under the guidance and transmission of the guide rope pulley 11, the wire rope pulls all the sub-towers to extend synchronously. During this process, the track 7 slides inside the slider 8 to improve the stability of the tower body 3 when it extends. During this process, the encoder on the drive motor 42 detects the rotation angle or number of revolutions in real time and feeds it back to the controller to achieve precise control of the lifting position. After the tower body 3 extends, it is fixed by the shaft pin to prevent it from retracting during use. In the event that there is no power, the handwheel 46 is turned, and the speed is increased by the speed-increasing gear set 45 to drive the worm gear 43. At this time, the manual lifting of the tower body 3 can be achieved. When tower body 3 is raised, the torque motor drives the reel to reverse and release the cable. At the same time, the antenna mounting platform pulls the cable upward. When tower body 3 is lowered, the torque motor drives the reel to rotate in the opposite direction and automatically winds the cable back onto the reel. When tower body 3 needs to be retracted, drive motor 42 reverses, thereby driving secondary tower 32 to retract into main tower 31. As secondary tower 32 descends, the wire rope loosens, and each sub-tower retracts synchronously under gravity. During this process, the inner tower's track 7 slides along the outer tower's slider 8, guiding tower body 3 to retract smoothly. When tower body 3 is fully retracted, the limit hooks 9 at the top of each tower section are inserted into the inserts 10 at the top of the outer tower section, making the retracted tower body 3 end as a whole, improving stability during transportation. At the same time, the tension of the antenna on the cable is released, and the torque motor in the winding device 5 drives the winding reel to rotate, automatically winding the cable back onto the reel. Finally, the limit motor 1041 drives the pin of the locking mechanism 1042 to retract, releasing the lock on main tower 31, activating the collapsing device 2 to extend its telescopic end, driving tower body 3 to rotate smoothly around the pivot on bracket 104 to a horizontal state, with its end entering the groove of tower end bracket 103 and manually locked.

[0025] Equipment testing: Test items and requirements 1. Collapse and Locking Test Time requirement: Lie down for 5 minutes, lock in position for 1 minute; Test objective: To ensure that the elevator tower can safely and quickly collapse and lock in an emergency to prevent accidents.

[0026] 2. Height test Height requirement: 30 meters; Time requirement: 35 minutes. Test objective: To verify whether the elevator tower can safely and stably rise to the specified height within a specified time.

[0027] 3. Tower top load test Load requirement: 200 kg; Displacement requirement: displacement must not exceed 35 mm. Test objective: To ensure that the displacement of the tower is within a safe range under a load of 200 kg at the top and a wind speed of level 4, thus guaranteeing the stability and safety of the structure.

[0028] Test results:

[0029] 1. Collapse and Locking Test: The elevator successfully completed the collapse and locking operation within 3.15 minutes, meeting the safety requirements.

[0030] 2. Height test: The lifting tower steadily rises to a height of 30 meters within 35 minutes, with smooth operation and no abnormalities occurring.

[0031] 3. Tower top load test: Under a tower top load of 200 kg and a wind speed of level 4, the tower displacement was 20 mm, which is less than the specified 35 mm, indicating good structural stability.

[0032] in conclusion: After a series of factory acceptance tests, all performance indicators of the lifting tower meet the design requirements and are ready for shipment. It is recommended to perform regular maintenance and inspections during actual use to ensure the safe and stable operation of the equipment.

[0033] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A large vehicle-mounted antenna lifting platform, comprising a platform (1) and a tower (3), wherein the tower (3) is disposed above the platform (1), characterized in that, The tower body (3) is composed of a main tower (31), a secondary tower (32) and several sub-towers connected from the outside to the inside. The top of the platform (1) is provided with a tilting device (2). The telescopic end of the tilting device (2) is hinged to the main tower (31), which drives the tower body (3) to rotate above the platform (1) to a vertical or horizontal state. Lifting mechanism (4), the lifting mechanism (4) is used to drive the tower body (3) to extend and retract, the lifting mechanism (4) is connected to the main tower (31); A cable winding device (5) is fixedly connected to the outside of the main tower (31). The cable winding device (5) releases or winds up the cable as the tower body (3) extends and retracts to match the extension and retraction of the tower body (3). A sliding mechanism is provided between the main tower (31), the secondary tower (32) and the sub-tower. The sliding mechanism includes a track (7) and a slider (8). The track (7) is located on the outside of the tower column, and the slider (8) is located on the inside of the tower column. When the tower body (3) extends or retracts, the track (7) of the inner tower slides along the slider (8) of the outer tower.

2. The large vehicle-mounted antenna lifting platform according to claim 1, characterized in that, The lifting mechanism (4) includes a gearbox (41) fixed at the bottom of the main tower (31), a drive motor (42) fixedly connected to one side of the main tower (31), a worm (43) fixedly connected to the output shaft of the drive motor (42), the worm (43) meshing with the worm wheel inside the gearbox (41), and a lead screw (44) fixedly connected to the output shaft of the gearbox (41).

3. The large vehicle-mounted antenna lifting platform according to claim 2, characterized in that, The main tower (31) is provided with a speed-increasing gear set (45) on the side away from the drive motor (42). The output gear of the speed-increasing gear set (45) is fixedly sleeved on the outside of the worm (43). A handwheel (46) that drives the speed-increasing gear set (45) to rotate is provided on one side of the main tower (31).

4. The large vehicle-mounted antenna lifting platform according to claim 2 or 3, characterized in that, The bottom of the sub-tower (32) is fixedly connected to a lifting nut (321), which is threadedly connected to a lead screw (44). When the lead screw (44) rotates, it works with the lifting nut (321) to drive the sub-tower (32) to extend and retract. The bottom of the sub-tower (32) is fixedly connected to a limit block (322) to limit the extension and retraction stroke of the sub-tower (32).

5. The large vehicle-mounted antenna lifting platform according to claim 3, characterized in that, The top and bottom of the sub-tower (32) and multiple sub-towers are symmetrically fixedly connected with guide rope pulleys (11), and the corresponding guide rope pulleys (11) are connected in series by steel wire ropes to enable the sub-towers and sub-towers (32) to extend and retract synchronously.

6. The large vehicle-mounted antenna lifting platform according to claim 1, characterized in that, The top of the platform (1) is symmetrically provided with brackets (104), and the tower body (3) is rotatably disposed between the two brackets (104). The top of the platform (1) is fixedly connected with a tower end bracket (103). When the tower body (3) is placed horizontally, its end is placed on the tower end bracket (103). The top of the platform (1) is also provided with a first bracket (101) and a second bracket (102) for installing the overturning device (2).

7. The large vehicle-mounted antenna lifting platform according to claim 6, characterized in that, A limit motor (1041) is fixedly connected to the bracket (104). A locking mechanism (1042) is fixedly connected to the output end of the limit motor (1041) for inserting into the corresponding hole of the main tower (31) to lock the tower body (3) to prevent rotation.

8. The large vehicle-mounted antenna lifting platform according to claim 1, characterized in that, The winding device (5) includes a frame fixed to the outside of the main tower (31), a winding reel is rotatably connected inside the frame, and a torque motor is installed inside the winding reel to provide winding force. When the tower body (3) is raised and retracted, the torque motor drives the winding reel to rotate synchronously to realize the synchronous winding and unwinding function.

9. The large vehicle-mounted antenna lifting platform according to claim 1, characterized in that, The top of the main tower (31), the secondary tower (32) and the sub-tower are all equipped with limit hooks (9) and inserts (10). When the tower body (3) is retracted, the limit hooks (9) are inserted into the outside of the inserts (10).

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