CN112109846A - Mast lodging device and navigation equipment - Google Patents
Mast lodging device and navigation equipment Download PDFInfo
- Publication number
- CN112109846A CN112109846A CN202010969139.2A CN202010969139A CN112109846A CN 112109846 A CN112109846 A CN 112109846A CN 202010969139 A CN202010969139 A CN 202010969139A CN 112109846 A CN112109846 A CN 112109846A
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- Prior art keywords
- mast
- sliding
- lodging
- wear
- sliding rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
- B63B15/02—Staying of masts or of other superstructures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B49/00—Arrangements of nautical instruments or navigational aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
- B63B2015/0016—Masts characterized by mast configuration or construction
- B63B2015/005—Masts characterized by mast configuration or construction with means for varying mast position or orientation with respect to the hull
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Guiding Agricultural Machines (AREA)
Abstract
The invention relates to the technical field of ship masts, and provides a mast lodging device and navigation equipment, wherein the mast lodging device comprises: a mast and a lodging component; the lodging component comprises a sliding rail, a sliding block, a connecting seat, a supporting rod and a driving piece, and the sliding rail is arranged on the navigation equipment; the sliding block is connected to the sliding rail in a sliding manner; the connecting end of the mast is connected to the sliding block in a sliding manner, and the movable end of the mast extends towards the direction far away from the sliding rail; the connecting seat is used for being arranged on the navigation equipment and is positioned on one side close to the end part of the sliding rail; the connecting end of the supporting rod is rotatably connected to the connecting seat, and the movable end of the supporting rod is rotatably connected with the movable end of the mast; the driving piece is connected to the sliding block and used for driving the sliding block to slide along the sliding rail; the sailing equipment is provided with the mast lodging device; the mast lodging device and the navigation equipment provided by the invention have the following advantages: the mast, the support rod and the navigation equipment are enclosed to form a triangular support structure with strong stability.
Description
Technical Field
The invention relates to the technical field of ship masts, in particular to a mast lodging device and sailing equipment.
Background
The unmanned ship is a full-automatic water surface robot which does not need remote control and can sail on the water surface according to preset tasks, integrates the technologies of ships, communication, automation, robot control, remote monitoring, networking systems and the like, has the characteristics of small size, shallow draught, flexibility and the like, can realize the functions of autonomous navigation, intelligent obstacle avoidance, remote communication, video real-time transmission, networking monitoring and the like, and is concerned more and more.
The mast is a support for installing an antenna, installing a navigation signal lamp and a communication facility on the unmanned ship and is an important safety facility when the ship navigates. The mast is typically mounted at the highest ceiling centerline of the vessel and is itself typically high, resulting in an overall larger size unmanned vessel. When the unmanned ship needs to go to a farther water area or sea area to perform tasks, the unmanned ship needs to be carried by a large mother ship, however, the large mother ship has a limited space size, and the whole size of the unmanned ship is large, so that the storage of the unmanned ship is inconvenient.
The mast is usually designed to be a liftable mast by the existing manufacturer to solve the problem of inconvenient storage, but the existing design stability is poor, the mast is easy to bend, and finally the mast is damaged.
Disclosure of Invention
The invention aims to provide a mast lodging device and sailing equipment, and aims to solve the technical problem that the lifting mast of an unmanned ship in the prior art is poor in stability.
In order to achieve the purpose, the technical scheme adopted by the invention is that the mast lodging device comprises:
the device comprises a mast and a lodging component for driving the mast to ascend and descend; the lodging component comprises a sliding rail, a sliding block, a connecting seat, a supporting rod and a driving piece, and the sliding rail is arranged on the navigation equipment; the sliding block is connected to the sliding rail in a sliding manner; the connecting end of the mast is connected to the sliding block in a sliding mode, and the movable end of the mast extends towards the direction far away from the sliding rail; the connecting seat is arranged on the navigation equipment and is positioned at one side close to the end part of the sliding rail; the connecting end of the supporting rod is rotatably connected to the connecting seat, and the movable end of the supporting rod is rotatably connected with the movable end of the mast; the driving piece is connected to the sliding block and used for driving the sliding block to slide along the sliding rail.
In one embodiment, the mast lodging device comprises at least two groups of lodging components, at least two groups of lodging components are oppositely arranged, and one mast is connected with at least two groups of lodging components.
In one embodiment, a sliding groove is formed in the sliding rail, a sliding table accommodated in the sliding groove is arranged on the sliding block, and the sliding table can move along the length direction of the sliding groove.
In one embodiment, the surface of the sliding table, which is connected with the groove wall of the sliding groove, is provided with a wear-resistant block.
In one embodiment, the wear-resistant blocks include a first wear-resistant block unit, a second wear-resistant block unit and a third wear-resistant block unit, the first wear-resistant block unit is connected with the bottom slot wall of the sliding slot, and the second wear-resistant block unit and the third wear-resistant block unit are respectively connected with the two side slot walls of the sliding slot.
In one embodiment, the two ends of the slide rail are provided with positioning holes, the openings of the positioning holes face the inside of the slide rail, and the sliding block is provided with positioning columns for being inserted into the positioning holes.
In one embodiment, the slide rail is provided with a sensor for sensing the position of the slide block.
In one embodiment, a flexible cover body used for covering the sliding groove is arranged on the sliding rail.
In one embodiment, the driving member includes a driving tube and a telescopic rod, the driving tube is connected to the connecting seat and the slide rail, the telescopic end of the telescopic rod is accommodated in the slide rail and connected to the slide block, and the telescopic end of the telescopic rod is driven by the driving tube to move along the length direction of the slide rail.
Another object of the present invention is to provide a navigation device, comprising a body and the mast lodging device, wherein the mast lodging device is arranged on the body.
The mast lodging device and the navigation equipment provided by the invention have the beneficial effects that:
the driving piece drives the sliding block to move along the sliding rail, and then the sliding block drives the connecting end of the mast to move along the sliding rail, when the connecting end of the mast slides to one end, close to the connecting seat, of the sliding rail, the movable end of the mast is lifted up under the supporting action of the supporting rod, and meanwhile, the mast, the supporting rod and the navigation equipment are enclosed to form a triangular supporting structure, so that the stability of the supporting structure is high; when the connecting end of the mast slides to the end of the slide rail far away from the connecting seat, the height of the movable end of the mast is reduced under the limiting connection effect of the supporting rod, and similarly, the mast, the supporting rod and the navigation equipment are still enclosed to form a triangular supporting structure, so that the stability is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a mast lodging device in a standing posture according to an embodiment of the present invention;
fig. 2 is a perspective view of a mast lodging device in a lodging posture according to an embodiment of the present invention;
fig. 3 is an exploded view of a slide rail provided by an embodiment of the present invention;
FIG. 4 is a perspective view of a slider according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a slider slidably coupled to a track in accordance with an embodiment of the present invention;
FIG. 6 is an exploded view of a mast lodging device in a standing position according to an embodiment of the invention;
fig. 7 is a perspective view of a navigation device according to an embodiment of the present invention.
The figures are numbered:
1-mast lodging device; 10-a lodging component; 11-mast; 12-a slide rail; 121-a chute; 122-positioning holes; 123-a cover body; 13-a slider; 131-a sliding table; 132-a wear block; 1321 — a first wear-resistant block unit; 1322-a second wear block unit; 1323-a third wear-resistant block unit; 133-a positioning post; 14-a connecting seat; 15-support rods; 16-a drive member; 161-a drive tube; 162-a telescoping rod;
2-navigation equipment.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the invention, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The following describes a specific implementation of the present invention in more detail with reference to specific embodiments:
as shown in fig. 1, a mast lodging device 1 provided by the embodiment of the invention is used for adjusting the posture of a mast 11, wherein the mast 11 is adjusted to be in a standing posture, or the mast 11 is adjusted to be in a lodging posture; specifically, the attitude adjustment of the mast 11 can be realized by three control modes: the device comprises a manual control mode, a remote control mode and a software automatic control mode, wherein a boat provided with the mast lodging device 1 is provided with manual input control equipment, and a user can directly input a control instruction to control the attitude of a mast 11; or the boat is provided with a communication component, and a user controls the mast 11 through a remote controller; or the boat is provided with a control system, and the mast 11 changes the posture under the control of a preset program. It should be further explained that the boat can be provided with at least two of the above three control modes at the same time to realize multiple control modes.
The mast lodging device 1 of the present embodiment includes: a mast 11 and a lodging component 10 for driving the mast 11 to ascend and descend; the lodging component 10 comprises a sliding rail 12, a sliding block 13, a connecting seat 14, a supporting rod 15 and a driving piece 16, wherein the sliding rail 12 is used for being arranged on the navigation equipment 2, and can be specifically arranged on a deck of the navigation equipment 2; the sliding block 13 is connected to the sliding rail 12 in a sliding manner, and the sliding block 13 can move along the length direction of the sliding rail 12; the connecting end of the mast 11 is slidably connected to the sliding block 13, the connecting end of the mast 11 moves along with the sliding block 13, the free end of the mast 11 extends away from the sliding rail 12, and a communication component and an induction component, such as a communication antenna and the like, are usually disposed at the free end of the mast 11; the connecting seat 14 is used for being arranged on the navigation equipment 2 and is positioned at one side close to the end part of the slide rail 12, and the connecting seat 14 and the slide rail 12 are arranged at intervals; the connecting end of the supporting rod 15 is rotatably connected to the connecting seat 14, the movable end of the supporting rod 15 is rotatably connected with the movable end of the mast 11, the connecting seat 14 and the slide rail 12 are arranged at intervals, the connecting end of the mast 11 is connected to the slide rail 12, the connecting end of the supporting rod 15 is connected to the connecting seat 14, namely, the connecting end of the mast 11 and the connecting end of the supporting rod 15 are arranged at intervals, and meanwhile, the movable end of the mast 11 is connected with the movable end of the supporting rod 15, namely, the mast 11, the supporting rod 15 and the course device can be enclosed to form a triangular supporting; the driving member 16 is connected to the sliding block 13 for driving the sliding block 13 to slide along the sliding rail 12, and the sliding block 13 can drive the connecting end of the mast 11 to slide along the sliding rail 12.
The working principle of the mast lodging device 1 of the embodiment is as follows:
as shown in fig. 1, the driving member 16 drives the sliding block 13 to move along the sliding rail 12, and the sliding block 13 drives the connecting end of the mast 11 to move along the sliding rail 12, when the connecting end of the mast 11 slides to the end of the sliding rail 12 close to the connecting base 14, the height of the movable end of the mast 11 is raised under the supporting action of the supporting rod 15; as shown in fig. 2, when the connecting end of the mast 11 slides to the end of the slide rail 12 far from the connecting base 14, the height of the movable end of the mast 11 is lowered by the limit connection of the support rod 15.
It should be further explained that the connecting base 14 may or may not be disposed in the length direction of the slide rail 12, and when the connecting base 14 is disposed in the length direction of the slide rail 12, the connecting end of the mast 11 is connected to the sliding block 13 in an articulated manner, and when the connecting base 14 is deviated in the length direction of the slide rail 12, the connecting end of the mast 11 is connected to the sliding block 13 in a universal connection manner.
The mast lodging device 1 provided by the embodiment has the beneficial effects that:
the driving piece 16 drives the sliding block 13 to move along the sliding rail 12, and then the sliding block 13 drives the connecting end of the mast 11 to move along the sliding rail 12, when the connecting end of the mast 11 slides to one end of the sliding rail 12 close to the connecting seat 14, the movable end of the mast 11 is lifted up under the supporting action of the supporting rod 15, and meanwhile, the mast 11, the supporting rod 15 and the navigation device 2 are enclosed to form a triangular supporting structure, so that the stability is strong; when the connecting end of the mast 11 slides to the end of the slide rail 12 far away from the connecting seat 14, the height of the movable end of the mast 11 is reduced under the limiting connection effect of the support rod 15, and similarly, the mast 11, the support rod 15 and the navigation device 2 still form a triangular support structure in a surrounding manner, and the stability is high.
In addition, the connecting end of the mast 11 moves along the slide rail 12, the slide rail 12 is arranged on the navigation equipment 2, and the slide rail 12 is supported by the surface of the navigation equipment 2, so that the slide rail 12 is not easy to deform under the action of the gravity of the mast 11, and the reliability in use is improved.
In one embodiment, the mast lodging device 1 comprises at least two groups of lodging assemblies 10, at least two groups of lodging assemblies 10 are arranged oppositely, and a mast 11 is connected with at least two groups of lodging assemblies 10. Specifically, the mast 11 is in a U shape, two ends of the mast are connecting ends, and the two connecting ends are respectively connected with the sliding blocks 13 in the lodging component 10 in a one-to-one correspondence manner. It will be appreciated that at least two sets of the lodging assemblies 10 support the mast 11, further improving the stability and reliability of the mast 11.
As shown in fig. 3 to 5, in one embodiment, the sliding rail 12 is provided with a sliding slot 121, the sliding block 13 is provided with a sliding table 131 accommodated in the sliding slot 121, and the sliding table 131 can move along the length direction of the sliding slot 121. Specifically, the depth direction of the sliding groove 121 is parallel to the plane of the sliding rail 12 and perpendicular to the length direction of the sliding rail 12, the sliding table 131 on the sliding block 13 extends along the depth direction of the sliding groove 121, and is clamped into the sliding groove 121 from the notch, so that the stability of the sliding block 13 in sliding connection with the sliding rail 12 can be increased through the above design.
Further, the surface of the sliding table 131, which is connected to the groove wall of the sliding groove 121, is provided with a wear-resistant block 132. In this embodiment, the wear-resistant block 132 provided on the sliding table 131 can increase the durability of the sliding table 131, prevent the sliding table 131 from being worn too fast when reciprocating in the slide rail 12, and reduce the service life of the sliding table 131.
Further, the wear-resistant block 132 includes a first wear-resistant block unit 1321, a second wear-resistant block unit 1322, and a third wear-resistant block unit 1323, the first wear-resistant block unit 1321 is connected to the bottom groove wall of the slide groove 121, and the second wear-resistant block unit 1322 and the third wear-resistant block unit 1323 are connected to the two side groove walls of the slide groove 121, respectively. In this embodiment, the first wear-resistant block unit 1321, the second wear-resistant block unit 1322, and the third wear-resistant block unit 1323 are detachably disposed on the sliding table 131, so that the maintenance personnel can replace the wear-resistant block 132 conveniently, and meanwhile, by disposing a plurality of wear-resistant block units respectively, the maintenance personnel can replace different wear-resistant block units according to actual wear degrees conveniently.
In one embodiment, the two ends of the slide rail 12 are provided with positioning holes 122, the openings of the positioning holes 122 face the inside of the slide rail 12, and the sliding block 13 is provided with positioning posts 133 for being inserted into the positioning holes 122. In this embodiment, when the sliding block 13 moves to the two ends of the sliding rail 12, the mast 11 represents a standing posture or a falling posture at this time, and the hole wall limiting positioning post 133 of the positioning hole 122 deflects to prevent the sliding block 13 and the sliding rail 12 from moving transversely during the navigation process, so as to loosen the sliding block 13 and the sliding rail 12, thereby reducing the reliability.
In one embodiment, the slide rail 12 is provided with a sensor for sensing the position of the slide block 13. It can be understood that the position of the sliding block 13 can be detected by setting the sensor, and then the posture of the mast 11 is detected, so that control information is sent according to the posture of the mast 11, automatic intelligent control is realized, and the position detection is carried out through the sliding block 13 to collapse the mast 11 to form closed-loop control.
In one embodiment, the slide rail 12 is provided with a flexible cover 123 for covering the slide groove 121. It can be understood that the cover 123 can prevent foreign matters from entering the sliding groove 121, and damage to the sliding table 131 and the sliding groove 121 can be avoided.
As shown in fig. 6, in one embodiment, the driving member 16 includes a driving tube 161 and a telescopic rod 162, the driving tube 161 connects the connecting seat 14 and the slide rail 12, a telescopic end of the telescopic rod 162 is received in the slide rail 12 and connected to the slide block 13, and the telescopic end of the telescopic rod 162 is driven by the driving tube 161 to move along the length direction of the slide rail 12. Specifically, the driving pipe 161 may be an air cylinder or an oil cylinder, and the driving pipe 161 drives the telescopic rod 162 to move, so as to drive the sliding block 13 to slide, thereby driving the connecting end of the mast 11 to slide. The driving pipe 161 is fixed between the connecting base 14 and the slide rail 12, and its stability is high.
As shown in fig. 7, the present embodiment further provides a navigation device 2, which includes a body and the mast lodging device 1, where the mast lodging device 1 is disposed on the body.
The navigation equipment 2 provided by the embodiment has the beneficial effects that:
the driving piece 16 drives the sliding block 13 to move along the sliding rail 12, and then the sliding block 13 drives the connecting end of the mast 11 to move along the sliding rail 12, when the connecting end of the mast 11 slides to one end of the sliding rail 12 close to the connecting seat 14, the movable end of the mast 11 is lifted up under the supporting action of the supporting rod 15, and meanwhile, the mast 11, the supporting rod 15 and the navigation device 2 are enclosed to form a triangular supporting structure, so that the stability is strong; when the connecting end of the mast 11 slides to the end of the slide rail 12 far away from the connecting seat 14, the height of the movable end of the mast 11 is reduced under the limiting connection effect of the support rod 15, and similarly, the mast 11, the support rod 15 and the navigation device 2 still form a triangular support structure in a surrounding manner, and the stability is high.
In addition, the connecting end of the mast 11 moves along the slide rail 12, the slide rail 12 is arranged on the navigation equipment 2, and the slide rail 12 is supported by the surface of the navigation equipment 2, so that the slide rail 12 is not easy to deform under the action of the gravity of the mast 11, and the reliability in use is improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A mast lodging device (1), characterized in that it comprises:
a mast (11) and a lodging component (10) for driving the mast (11) to ascend and descend; the lodging component (10) comprises a sliding rail (12), a sliding block (13), a connecting seat (14), a supporting rod (15) and a driving piece (16), wherein the sliding rail (12) is arranged on the navigation equipment (2); the sliding block (13) is connected to the sliding rail (12) in a sliding manner; the connecting end of the mast (11) is connected to the sliding block (13) in a sliding manner, and the movable end of the mast (11) extends in a direction away from the sliding rail (12); the connecting seat (14) is arranged on the navigation equipment (2) and is positioned at one side close to the end part of the sliding rail (12); the connecting end of the supporting rod (15) is rotatably connected to the connecting seat (14), and the movable end of the supporting rod (15) is rotatably connected with the movable end of the mast (11); the driving piece (16) is connected to the sliding block (13) and used for driving the sliding block (13) to slide along the sliding rail (12).
2. A mast lodging device (1) according to claim 1, wherein said mast lodging device (1) comprises at least two sets of said lodging assemblies (10), at least two sets of said lodging assemblies (10) being oppositely disposed, one said mast (11) being connected to at least two sets of said lodging assemblies (10).
3. The mast lodging device (1) according to claim 1, wherein the sliding rail (12) is provided with a sliding slot (121), the sliding block (13) is provided with a sliding table (131) accommodated in the sliding slot (121), and the sliding table (131) can move along the length direction of the sliding slot (121).
4. A mast lodging device (1) according to claim 3, wherein the surface of the sliding platform (131) in contact with the wall of the sliding groove (121) is provided with a wear-resistant block (132).
5. The mast lodging device (1) according to claim 4, wherein the wear-resistant blocks (132) comprise a first wear-resistant block unit (1321), a second wear-resistant block unit (1322) and a third wear-resistant block unit (1323), the first wear-resistant block unit (1321) being joined to the bottom slot wall of the sliding slot (121), the second wear-resistant block unit (1322) and the third wear-resistant block unit (1323) being joined to the two side slot walls of the sliding slot (121), respectively.
6. A mast lodging device (1) according to any one of claims 1 to 5, wherein the slide rail (12) is provided at both ends thereof with positioning holes (122), the positioning holes (122) open towards the inside of the slide rail (12), and the sliding block (13) is provided with positioning posts (133) for insertion into the positioning holes (122).
7. A mast lodging device (1) according to any one of claims 1 to 5, wherein the sliding track (12) is provided with a sensor for sensing the position of the sliding block (13).
8. A mast lodging device (1) according to any one of claims 3 to 5, wherein a flexible cover (123) is provided on the sliding track (12) for covering the sliding groove (121).
9. The mast lodging device (1) according to any one of claims 1 to 5, wherein the driving member (16) comprises a driving tube (161) and a telescopic rod (162), the driving tube (161) connects the connecting seat (14) and the sliding rail (12), the telescopic end of the telescopic rod (162) is accommodated in the sliding rail (12) and connected with the sliding block (13), and the telescopic end of the telescopic rod (162) moves along the length direction of the sliding rail (12) under the driving of the driving tube (161).
10. Sailing apparatus (2), characterized in that it comprises a body and a mast lodging device (1) according to any one of claims 1 to 9, on which the mast lodging device (1) is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969139.2A CN112109846A (en) | 2020-09-15 | 2020-09-15 | Mast lodging device and navigation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969139.2A CN112109846A (en) | 2020-09-15 | 2020-09-15 | Mast lodging device and navigation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112109846A true CN112109846A (en) | 2020-12-22 |
Family
ID=73802641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010969139.2A Pending CN112109846A (en) | 2020-09-15 | 2020-09-15 | Mast lodging device and navigation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112109846A (en) |
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2020
- 2020-09-15 CN CN202010969139.2A patent/CN112109846A/en active Pending
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