Amphibious heavy-load antenna lodging device

Abstract

The utility model discloses an amphibious heavy-load antenna lodging device, and relates to the technical field of antenna lodging, the amphibious heavy-load antenna lodging device comprises a housing, a driving assembly and a lodging frame, the housing is fixedly installed at an opening at the top end of a vehicle, the housing comprises a box cover and a bottom shell plugged on a bottom opening of the box cover, and the driving assembly is arranged on the bottom shell. A first side cover is connected to a side opening of the box cover in a sealing manner, so that the box cover, the bottom shell and the first side cover jointly form an accommodating space; the driving assembly comprises a first driving part, a first transmission part and a second transmission part which are sequentially arranged in the containing space from bottom to top and are in driving connection with one another. The second transmission part comprises a rotating shaft with the two ends penetrating out of the box cover. The lodging frames are fixedly installed on the two sides of the rotating shaft and used for fixing and supporting an antenna. The device is simple and compact in structure, large torque can be output, and the requirement for large torque in a specific scene is met.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted antennas, and more particularly to an amphibious heavy-load antenna lodging device. Background Art

[0002] In the prior art, for some vehicles that need to wade through water, the roof of the vehicle may even be soaked in water when the water is deep.

[0003] Currently, the maximum electric output torque of existing amphibious whip antenna retraction systems in low-temperature conditions is less than 10 kg·m. In certain scenarios, such as vehicles that need to wade through water in low-temperature conditions, the performance of the electric system is affected. Furthermore, low temperatures increase the viscosity of the lubricant, which increases friction in mechanical components and reduces the electric output torque. This presents a challenge for amphibious whip antenna retraction systems that operate in low-temperature conditions, as they must maintain sufficient output torque in these extreme conditions to ensure the antenna's proper retraction and erection. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an amphibious heavy-load antenna tumbling device to solve the technical problems that the traditional device has a complex structure and the output torque does not meet the requirements of specific scenarios.

[0005] To achieve the above-mentioned purpose, the present invention provides an amphibious heavy-load antenna retraction device, the amphibious heavy-load antenna retraction device comprising:

[0006] a housing fixedly mounted at the top opening of the vehicle, the housing comprising a box cover and a bottom shell blocking the bottom opening of the box cover, a first side cover being sealedly connected to the side opening of the box cover, so that the box cover, the bottom shell and the first side cover together form an accommodating space;

[0007] A drive assembly comprising a first drive component, a first transmission component, and a second transmission component sequentially arranged in the accommodating space from bottom to top and drivingly connected to each other, wherein the second transmission component comprises a rotating shaft with both ends passing through the box cover;

[0008] The lodging frame is fixedly installed on both sides of the rotating shaft and is used to fix and support the antenna.

[0009] Preferably, the first driving component includes a DC motor horizontally mounted on the bottom inner bottom of the bottom shell, a first gear connected to the output shaft of the DC motor, and a bearing seat and a first bearing sleeved on the end of the output shaft, the bearing seat is fixedly connected to the inner wall of the first side cover, and the end of the output shaft of the DC motor is rotatably supported in the bearing seat through the first bearing.

[0010] Preferably, the first transmission component includes a worm placed horizontally above the bottom shell and located in the box cover, a second gear sleeved on the worm, a second bearing sleeved on the worm and located between the box cover and the bottom shell, a hand crank seat integrally connected to the outer wall of the first side cover and a waterproof cover threadedly connected to the hand crank seat, the worm extends out of the side opening of the box cover on the side close to the first side cover and passes through the bearing seat and the hand crank seat in sequence and is fixedly connected to the waterproof cover, and the second gear and the first gear are both engaged and transmitted in the first side cover.

[0011] Preferably, the second transmission component further comprises a worm wheel sleeved on the rotating shaft and located directly above the worm, and the worm wheel and the worm are meshed and transmitted in the housing cover.

[0012] Preferably, the worm comprises a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment coaxially connected in sequence, the second shaft segment is provided with helical teeth meshing with the worm gear, and the first shaft segment and the third shaft segment are respectively provided with a first shaft shoulder and a second shaft shoulder oppositely arranged;

[0013] A first shaft hole is formed on an outer wall of a side between the box cover and the bottom shell and opposite to the first side cover; a second bearing is sleeved on a side of the first shaft section away from the second shaft section, and the second bearing is adapted to be mounted in a first inner stop of the first shaft hole; an end of the second bearing away from the first inner stop is adapted to abut against the first shaft shoulder;

[0014] The second bearing is sleeved on the third shaft segment, and one end of the second bearing close to the second shaft segment is adapted to abut against the second shaft shoulder, and one end of the second bearing away from the second shaft segment is adapted to be limited by a snap ring installed on the inner wall between the box cover and the bottom shell;

[0015] The second gear is sleeved on the fourth shaft segment, and one end of the fourth shaft segment away from the third shaft segment extends to the outside of the first side cover and is fixedly connected to the center of the inner wall of the waterproof cover.

[0016] Preferably, a first annular groove and a first external thread are sequentially provided on the outer wall of the hand crank seat, a first internal thread and a second internal stop are sequentially provided on the inner wall of the waterproof cover, and the waterproof cover and the hand crank seat are suitable for being threadedly connected through the first internal thread and the first external thread, and the first annular groove and the second internal stop are suitable for being filled with a first sealing ring.

[0017] Preferably, the fourth shaft section passes through the bearing seat and is sleeved with a third bearing, and the third bearing is suitable for being installed in the bearing seat.

[0018] Preferably, the falling frame includes a flange and two support arms vertically connected to both sides of the flange, and the ends of the two support arms facing away from the flange are fixedly connected to the two ends of the rotating shaft respectively.

[0019] Preferably, it further comprises a sealing structure sealedly connected to the housing, the sealing structure comprising:

[0020] a first end cover sealing component, comprising a first end cover, a first mechanical oil seal, and a first lip seal ring, wherein the first end cover is disposed on one side of the rotating shaft and blocks a second shaft hole formed between the housing and the bottom shell, and the first mechanical oil seal and the first lip seal ring are disposed on the rotating shaft and located within the first end cover;

[0021] The second end cover sealing component includes a second end cover, a second mechanical oil seal and a second lip seal ring. The second end cover is passed through the other side of the rotating shaft and sealed on the third shaft hole formed by the first side cover. The second mechanical oil seal and the second lip seal ring are passed through the rotating shaft and are located inside the second end cover.

[0022] Preferably, a second side cover is provided on the first axial hole for sealing, and the second side cover is located on the side walls of the box cover and the bottom shell.

[0023] Compared with the prior art, the present invention has the following advantages and effects:

[0024] The present invention provides an amphibious heavy-duty antenna retraction device consisting of a housing, a drive assembly, and a retraction frame. The housing is fixedly mounted on the vehicle's roof opening and comprises a housing, a bottom shell, and a first side cover, forming an enclosed housing that protects the internal drive assembly while ensuring the vehicle's roof is sealed and waterproof. The drive assembly comprises a first drive component, a first transmission component, and a second transmission component, which are sequentially arranged within the housing and interconnected. The second transmission component comprises a rotating shaft extending through the housing at both ends for power transmission. The retraction frame is fixedly mounted on either side of the rotating shaft to securely support the antenna. Power from the drive assembly is transmitted to the retraction frame via the rotating shaft, causing the antenna to retract, allowing the antenna to be flexibly erected during road or water operations on an amphibious vehicle, adapting to various operating environments. The device thus achieves a simple and compact structure. The housing, which houses the drive mechanism, drives the retraction frame. Furthermore, the redesigned drive assembly ensures high torque output, meeting the high torque requirements for electric retraction in specific scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the amphibious heavy-load antenna retraction device in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the main structure of the amphibious heavy-load antenna retraction device in an embodiment of the present utility model;

[0027] Figure 3 This is a side structural diagram of the amphibious heavy-load antenna retraction device in an embodiment of the present utility model;

[0028] Figure 4 This is a rear structural diagram of the amphibious heavy-load antenna retraction device in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic cross-sectional view of the heavy-load antenna retraction device for amphibious use in an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the internal enlarged structure of the first end cover in an embodiment of the present utility model;

[0031] Figure 7 It is a schematic diagram of the internal enlarged structure of the second end cover in an embodiment of the present utility model.

[0032] Description of reference numerals:

[0033] 1- shell;

[0034] 11-box cover; 12-bottom shell; 13-first side cover; 14-second side cover; 15-first shaft hole; 151-first inner stop; 16-second shaft hole; 17-third shaft hole;

[0035] 2-Drive assembly;

[0036] 21-first driving component; 211-DC motor; 212-first gear; 213-bearing seat; 214-first bearing;

[0037] 22-first transmission component;

[0038] 221-worm; 2211-first shaft section; 22111-first shaft shoulder; 2212-second shaft section; 22121-helical tooth; 2213-third shaft section; 22131-second shaft shoulder; 2214-fourth shaft section;

[0039] 222-second gear;

[0040] 223-second bearing;

[0041] 224-hand crank seat; 2241-first annular groove; 2242-first external thread;

[0042] 225- waterproof cover; 2251- first internal thread; 2252- second internal stop;

[0043] 226-third bearing; 227-snapping ring; 228-first sealing ring;

[0044] 23- second transmission component; 231- worm gear; 232- rotating shaft;

[0045] 3-lodging frame; 31-support arm; 32-flange;

[0046] 4- Sealing structure;

[0047] 41-first end cover sealing component; 411-first end cover; 412-first mechanical oil seal; 413-first lip seal ring;

[0048] 42 - second end cover sealing component; 421 - second end cover; 422 - second mechanical oil seal; 423 - second lip seal ring. DETAILED DESCRIPTION

[0049] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal connections between two components; they may refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0053] See also Figure 1-7 As shown, the embodiment of the present utility model provides an amphibious heavy-load antenna lodging device, which includes a housing 1, a drive assembly 2 and a lodging frame 3, wherein:

[0054] The shell 1 is fixedly installed at the top opening of the vehicle. The shell 1 includes a box cover 11 and a bottom shell 12 that blocks the bottom opening of the box cover 11. A first side cover 13 is sealed to the side opening of the box cover 11, so that the box cover 11, the bottom shell 12 and the first side cover 13 together form an accommodating space.

[0055] The driving assembly 2 includes a first driving component 21, a first transmission component 22 and a second transmission component 23 which are arranged in sequence from bottom to top in the accommodating space and are driven and connected to each other. The second transmission component 23 includes a rotating shaft 232 with both ends passing through the box cover 11; the inverted frame 3 is fixedly installed on both sides of the rotating shaft 232 for fixing and supporting the antenna.

[0056] Specifically in this embodiment, the shell 1 is fixedly installed at the top opening of the vehicle, and is composed of a box cover 11, a bottom shell 12 and a first side cover 13, forming a closed accommodating space for protecting the internal drive component 2 while ensuring the sealing and waterproofness of the top of the vehicle; the drive component 2 includes a first drive component 21, a first transmission component 22 and a second transmission component 23, which are arranged in sequence in the accommodating space and are driven and connected to each other, wherein the second transmission component 23 includes a rotating shaft 232 with both ends passing through the box cover 11 for transmitting power; the inverted frame 3 is fixedly installed on both sides of the rotating shaft 232 for fixedly supporting the antenna; the power of the drive component 2 is transmitted to the inverted frame 3 through the rotating shaft 232 to realize the inverted action of the antenna, so that the antenna can be flexibly inverted during the road use or wading operation of the amphibious vehicle to adapt to different operating environments.

[0057] Thus, the device has a simple and compact structure, and the housing 1 is provided with a space to accommodate the drive mechanism, thereby driving the inverting frame 3 to stand upright. At the same time, by re-selecting the drive component 2, it is ensured that a large torque can be output to meet the high torque requirements of electric inverting in specific scenarios.

[0058] It should be noted that in order to ensure that the solution does not penetrate into the interior of the vehicle through the wire holes during the vehicle's underwater operation, the device adopts designs such as through-wall wire bodies and conductive sealing gaskets to improve the vehicle's sealing.

[0059] For further information, see Figure 1 、 5 As shown, the first driving component 21 includes a DC motor 211, a first gear 212, a bearing seat 213 and a first bearing 214, wherein:

[0060] The DC motor 211 is horizontally mounted on the inner bottom of the bottom shell 12. The first gear 212 is connected to the output shaft of the DC motor 211. The bearing seat 213 and the first bearing 214 are sleeved on the end of the output shaft of the DC motor 211. The bearing seat 213 is fixedly connected to the inner wall of the first side cover 13, and the end of the output shaft of the DC motor 211 is rotatably supported in the bearing seat 213 through the first bearing 214.

[0061] Specifically in this embodiment, the DC motor 211 is horizontally installed on the inner bottom of the bottom shell 12, serving as the power source of the drive component 2, responsible for converting electrical energy into mechanical energy to drive the movement of the entire inverting device; the first gear 212 is connected to the output shaft of the DC motor 211, and is used to transmit the rotational motion of the motor to subsequent transmission components to improve the efficiency of power transmission; the bearing seat 213 is fixedly connected to the inner wall of the first side cover 13, and the first bearing 214 is sleeved on the end of the output shaft of the DC motor 211, so that the output shaft of the DC motor 211 is rotatably supported in the bearing seat 213 through the first bearing 214, reducing the wear of the motor output shaft, ensuring the stable operation of the output shaft and reducing friction, improving the stability and durability of the entire drive system, and facilitating installation and maintenance.

[0062] In addition, considering that amphibious vehicles may operate in a variety of harsh environments, the design of the bearing seat 213 and the first bearing 214 helps to protect the motor and transmission system and reduce the impact of environmental factors such as mud, sand, and moisture on the equipment.

[0063] For further information, see Figure 1 、 4 5, the first transmission component 22 includes a worm 221, a second gear 222, a second bearing 223, a hand crank seat 224 and a waterproof cover 225, wherein:

[0064] The worm 221 is placed horizontally above the bottom shell 12 and is located in the box cover 11. The second gear 222 is sleeved on the worm 221. The second bearing 223 is sleeved on the worm 221 and is located between the box cover 11 and the bottom shell 12. The hand crank seat 224 is integrally connected to the outer wall of the first side cover 13. The waterproof cover 225 is threadedly connected to the hand crank seat 224. The side of the worm 221 close to the first side cover 13 extends out of the side opening of the box cover 11 and passes through the bearing seat 213 and the hand crank seat 224 in sequence and is fixedly connected to the waterproof cover 225. The second gear 222 and the first gear 212 are both engaged and transmitted in the first side cover 13.

[0065] Specifically, in this embodiment, the worm 221 and the second gear 222 are capable of meshing transmission, wherein the worm 221 is generally used to transmit a large reduction ratio, while the second gear 222 is used to transmit this motion to the rotating shaft 232. A second bearing 223 is mounted on the worm 221 and is located between the housing 11 and the bottom shell 12. The function of the second bearing 223 is to reduce friction during the rotation of the worm 221, while providing support to ensure the stable operation of the worm 221 and reduce the heat generated by friction. The hand crank seat 224 is integrally connected to the outer wall of the first side cover 13, and the waterproof cover 225 is threadedly connected to the hand crank seat 224, making the hand crank seat 224 an interface for external operation, while the waterproof cover 225 protects the internal structure from the intrusion of moisture and dust, ensuring the long-term stable operation of the transmission components. The worm 221 extends out of the side opening of the housing 11 on the side near the first side cover 13, passes through the bearing seat 213 and the hand crank seat 224 in sequence, and is fixedly connected to the waterproof cover 225. This extended design allows the worm 221 to be connected to an external device, such as by manual cranking or electric drive. The second gear 222 and the first gear 212 are both meshed and driven within the first side cover 13. This meshing transmission allows power to be transferred from one gear to the other, achieving power distribution and transmission while maintaining a compact structure.

[0066] Thus, the configuration of the first transmission component 22 fully utilizes the transmission characteristics of the worm 221 and the gears, achieving efficient and stable torque transmission and motion conversion through a reasonable structural layout and component connection. Simultaneously, consideration is given to operational convenience and equipment protection, ensuring the reliability and durability of the first transmission component 22 in various environments.

[0067] For further information, see Figure 1 As shown, the second transmission component 23 further includes a worm wheel 231 sleeved on the rotating shaft 232 and located directly above the worm 221 . The worm wheel 231 and the worm 221 are meshed and transmitted in the housing cover 11 .

[0068] Thus, the worm wheel 231 and the worm 221 mesh within the housing 11, a transmission method similar to that of a gear and rack. During operation, the teeth of the worm wheel 231 slide and roll along the helical surface of the worm 221, achieving torque and speed transmission. Because the meshing between the worm 221 and the worm wheel 231 is line contact, its load capacity is higher than that of a staggered helical gear mechanism. Therefore, the worm drive is equivalent to a helical drive, a multi-tooth meshing drive, and has smooth transmission and low noise.

[0069] For further information, see Figure 1 、 5 As shown, the worm 221 includes a first shaft segment 2211, a second shaft segment 2212, a third shaft segment 2213 and a fourth shaft segment 2214 that are coaxially connected in sequence. The second shaft segment 2212 is provided with a helical tooth 22121 that engages with the worm gear 231 for transmission. The first shaft segment 2211 and the third shaft segment 2213 are respectively provided with a first shaft shoulder 22111 and a second shaft shoulder 22131 that are relatively set.

[0070] A first axial hole 15 is opened between the box cover 11 and the bottom shell 12 and on the outer wall opposite to the first side cover 13. A second bearing 223 is sleeved on the side of the first shaft section 2211 away from the second shaft section 2212, and the second bearing 223 is suitable for being installed in the first inner stop 151 of the first axial hole 15. The end of the second bearing 223 away from the first inner stop 151 is suitable for abutting against the first shaft shoulder 22111.

[0071] A second bearing 223 is sleeved on the third shaft segment 2213, and the end of the second bearing 223 close to the second shaft segment 2212 is suitable for abutting against the second shaft shoulder 22131, and the end of the second bearing 223 away from the second shaft segment 2212 is suitable for being limited by a retaining ring 227 installed on the inner wall between the box cover 11 and the bottom shell 12.

[0072] The second gear 222 is sleeved on the fourth shaft segment 2214 , and one end of the fourth shaft segment 2214 away from the third shaft segment 2213 extends to the outside of the first side cover 13 and is fixedly connected to the center of the inner wall of the waterproof cover 225 .

[0073] Specifically, in this embodiment, the worm 221 is composed of four coaxially connected shaft segments, allowing the worm 221 to have different functional segments, each of which can perform different mechanical tasks. The second shaft segment 2212 is provided with helical teeth 22121, which mesh with the worm wheel 231 for transmission, enabling precise power transmission and speed conversion between the worm 221 and the worm wheel 231. The first shaft segment 2211 and the third shaft segment 2213 are respectively provided with a first shoulder 22111 and a second shoulder 22131, which provide support and positioning for the bearing, ensuring that the bearing operates in the correct position. The bearing 223 is fixed between the housing 11 and the bottom shell 12, while allowing the worm 221 to rotate freely within the housing 11. The function of the retaining ring 227 is to prevent the second bearing 223 from moving axially, ensuring its stability during operation. The center of the inner wall of the waterproof cover 225 is fixedly connected to the fourth shaft segment 2214, so that the worm 221 can be connected to an external device. At the same time, the waterproof cover 225 protects the worm 221 from the influence of the external environment.

[0074] Therefore, by comprehensively considering multiple aspects such as power transmission, bearing positioning, axial limit and external connection, and through precise structural design and component matching, an efficient and stable transmission effect is achieved, and the reliability and durability of the entire transmission system are improved.

[0075] For further information, see Figure 5 As shown, in order to ensure the stability and safety of the amphibious whip antenna tumbling device in an underwater environment, a first annular groove 2241 and a first external thread 2242 are sequentially provided on the outer wall of the hand crank seat 224, and a first internal thread 2251 and a second internal stop 2252 are sequentially provided on the inner wall of the waterproof cover 225, and the waterproof cover 225 and the hand crank seat 224 are suitable for being threadedly connected through the first internal thread 2251 and the first external thread 2242. Through the threaded connection, the waterproof cover 225 can realize stepless adjustment of the axial propulsion pressure of the rotating shaft 232, thereby improving the flexibility and adaptability of the connection; the first annular groove 2241 and the second internal stop 2252 are suitable for being filled with a first sealing ring 228 to prevent the intrusion of liquid and dust.

[0076] For further information, see Figure 5 As shown, the fourth shaft segment 2214 passes through the bearing seat 213 and is sleeved with a third bearing 226 , and the third bearing 226 is suitable for being installed in the bearing seat 213 .

[0077] The bearing seat 213 is used to support and fix the third bearing 226, ensuring that the outer ring of the third bearing 226 is fixed while the inner ring can rotate freely. In this embodiment, the bearing seat 213 provides a mounting position for the third bearing 226, so that it can stably support the fourth shaft segment 2214.

[0078] For further information, see Figure 1 、5 As shown, the falling frame 3 includes a flange 32 and two support arms 31 vertically connected to both sides of the flange 32. The ends of the two support arms 31 facing away from the flange 32 are fixedly connected to the two ends of the rotating shaft 232 respectively.

[0079] Specifically, the falling frame 3 is mainly composed of a flange 32 and two support arms 31. The flange 32 serves as a connecting piece, and the support arms 31 are vertically connected on both sides of the flange to form a stable structure. The vertical connection of the support arms 31 provides vertical support force for the falling frame 3, ensuring the stability of the rotating shaft 232 during operation.

[0080] For further information, see Figure 3 、 6 As shown in FIG. 7 , the amphibious heavy-load antenna retraction device further includes a sealing structure 4 sealedly connected to the housing 1 , the sealing structure 4 includes a first end cover sealing component 41 and a second end cover sealing component 42, wherein:

[0081] The first end cover sealing component 41 includes a first end cover 411, a first mechanical oil seal 412 and a first lip-shaped sealing ring 413. The first end cover 411 is passed through one side of the rotating shaft 232 and seals the second shaft hole 16 formed between the box cover 11 and the bottom shell 12. The first mechanical oil seal 412 and the first lip-shaped sealing ring 413 are passed through the rotating shaft 232 and are located inside the first end cover 411.

[0082] The first end cover sealing component 41 consists of a first end cover 411, a first mechanical oil seal 412 and a first lip seal ring 413. This arrangement not only provides double sealing, but also ensures the sealing of the rotating shaft 232 when passing through the housing 1, preventing liquid and impurities from entering the interior of the device.

[0083] The second end cover sealing component 42 includes a second end cover 421, a second mechanical oil seal 422 and a second lip seal ring 423. The second end cover 421 is passed through the other side of the rotating shaft 232 and seals the third shaft hole 17 formed in the first side cover 13. The second mechanical oil seal 422 and the second lip seal ring 423 are passed through the rotating shaft 232 and are located in the second end cover 421.

[0084] The first end cover sealing component 41 and the second end cover sealing component 42 respectively block the second shaft hole 16 and the third shaft hole 17 to ensure that both ends of the rotating shaft 232 are isolated from the external environment, which helps to keep the internal components dry and clean, especially in underwater environments that amphibious vehicles may encounter.

[0085] The first mechanical oil seal 412 and the second mechanical oil seal 422 provide preliminary sealing, mainly used to achieve dynamic rotary sealing when the rotating shaft moves, while the first lip seal ring 413 and the second lip seal ring 423 provide additional sealing protection, mainly used to prevent external dust and oil from entering the interior of the equipment. This double sealing structure can effectively prevent the intrusion of liquids and external contaminants when wading through water.

[0086] Thus, the setting of the sealing structure 4 enables the inverted device to adapt to different environmental conditions, including underwater operations. By setting a rubber pad between the shell 1 and the end cover, the sealing of the shell 1 itself is further ensured, so that the inverted device can adapt to underwater environment operation.

[0087] For further information, see Figure 3 、 5 As shown, a second side cover 14 is provided on the first axial hole 15 for sealing. The second side cover 14 is located on the side walls of the housing 11 and the bottom shell 12. As part of the sealing structure, the second side cover 14 mainly blocks the first axial hole 15, preventing liquid, dust, or other contaminants from entering the housing 1 and protecting the internal mechanical components from damage.

[0088] Although the utility model is disclosed as above, the scope of protection of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of protection of the utility model.

Claims

1. A heavy-load antenna retraction device for amphibious use, characterized in that: include: a housing fixedly mounted at the top opening of the vehicle, the housing comprising a box cover and a bottom shell blocking the bottom opening of the box cover, a first side cover being sealedly connected to the side opening of the box cover, so that the box cover, the bottom shell and the first side cover together form an accommodating space; A drive assembly comprising a first drive component, a first transmission component, and a second transmission component sequentially arranged in the accommodating space from bottom to top and drivingly connected to each other, wherein the second transmission component comprises a rotating shaft with both ends passing through the box cover; The lodging frame is fixedly installed on both sides of the rotating shaft and is used to fix and support the antenna.

2. The amphibious heavy-load antenna landing device according to claim 1, characterized in that: The first driving component includes a DC motor horizontally installed at the bottom of the bottom shell, a first gear connected to the output shaft of the DC motor, and a bearing seat and a first bearing sleeved on the end of the output shaft. The bearing seat is fixedly connected to the inner wall of the first side cover, and the end of the output shaft of the DC motor is rotatably supported in the bearing seat through the first bearing.

3. The amphibious heavy-load antenna landing device according to claim 2, characterized in that: The first transmission component includes a worm placed horizontally above the bottom shell and located in the box cover, a second gear sleeved on the worm, a second bearing sleeved on the worm and located between the box cover and the bottom shell, a hand crank seat integrally connected to the outer wall of the first side cover, and a waterproof cover threadedly connected to the hand crank seat. The side of the worm close to the first side cover extends out of the side opening of the box cover and passes through the bearing seat and the hand crank seat in sequence and is fixedly connected to the waterproof cover. The second gear and the first gear are both engaged and transmitted inside the first side cover.

4. The amphibious heavy-load antenna landing device according to claim 3, characterized in that: The second transmission component further includes a worm wheel sleeved on the rotating shaft and located directly above the worm, and the worm wheel and the worm are meshed and transmitted in the housing.

5. The amphibious heavy-load antenna landing device according to claim 4, characterized in that: The worm comprises a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment which are coaxially connected in sequence, the second shaft segment is provided with helical teeth which mesh with the worm gear, and the first shaft segment and the third shaft segment are respectively provided with a first shaft shoulder and a second shaft shoulder which are arranged opposite to each other; A first shaft hole is formed on an outer wall of a side between the box cover and the bottom shell and opposite to the first side cover; a second bearing is sleeved on a side of the first shaft section away from the second shaft section, and the second bearing is adapted to be mounted in a first inner stop of the first shaft hole; an end of the second bearing away from the first inner stop is adapted to abut against the first shaft shoulder; The second bearing is sleeved on the third shaft segment, and one end of the second bearing close to the second shaft segment is adapted to abut against the second shaft shoulder, and one end of the second bearing away from the second shaft segment is adapted to be limited by a snap ring installed on the inner wall between the box cover and the bottom shell; The second gear is sleeved on the fourth shaft segment, and one end of the fourth shaft segment away from the third shaft segment extends to the outside of the first side cover and is fixedly connected to the center of the inner wall of the waterproof cover.

6. The amphibious heavy-load antenna landing device according to claim 3, characterized in that: The outer wall of the hand crank seat is provided with a first annular groove and a first external thread in sequence, and the inner wall of the waterproof cover is provided with a first internal thread and a second internal stop in sequence. The waterproof cover and the hand crank seat are suitable for being threadedly connected through the first internal thread and the first external thread, and the first annular groove and the second internal stop are suitable for being filled with a first sealing ring.

7. The amphibious heavy-load antenna landing device according to claim 5, characterized in that: The fourth shaft section passes through the bearing seat and is sleeved with a third bearing, and the third bearing is suitable for being installed in the bearing seat.

8. The amphibious heavy-load antenna retraction device according to any one of claims 1 to 7, characterized in that: The falling frame includes a flange and two support arms vertically connected to both sides of the flange, and the ends of the two support arms facing away from the flange are fixedly connected to the two ends of the rotating shaft respectively.

9. The amphibious heavy-load antenna landing device according to claim 8, characterized in that: The invention also includes a sealing structure that is sealed and connected to the housing, and the sealing structure includes: a first end cover sealing component, comprising a first end cover, a first mechanical oil seal, and a first lip seal ring, wherein the first end cover is disposed on one side of the rotating shaft and blocks a second shaft hole formed between the housing and the bottom shell, and the first mechanical oil seal and the first lip seal ring are disposed on the rotating shaft and located within the first end cover; The second end cover sealing component includes a second end cover, a second mechanical oil seal and a second lip seal ring. The second end cover is passed through the other side of the rotating shaft and sealed on the third shaft hole formed by the first side cover. The second mechanical oil seal and the second lip seal ring are passed through the rotating shaft and are located inside the second end cover.

10. The amphibious heavy-load antenna landing device according to claim 5, characterized in that: A second side cover is provided on the first shaft hole for sealing and blocking, and the second side cover is located on the side walls of the box cover and the bottom shell.

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