Rotating shaft assembly and unmanned ship supporting device

Abstract

The utility model relates to the field of unmanned ship parts, and provides a rotating shaft assembly which comprises a fixed accessory and a rotating accessory, a first through hole is formed in the rotating accessory, and the rotating accessory is connected with an installation hole formed in the fixed accessory through a fixed rotating shaft via the first through hole; a plurality of pin holes are formed in the circumferential position, which is a fixed distance away from the first through hole, of the rotary accessory; a second through hole is formed in the fixing accessory, and an elastic limiting pin is connected to the second through hole; and when the rotating accessory rotates around the fixed rotating shaft until the second through hole is communicated with the pin hole, the pin of the elastic limiting pin is elastically clamped with the pin hole. The utility model further provides an unmanned ship supporting device, the rotating shaft assembly is applied, the whole device can be folded, the unmanned ship supporting device is used for assisting the unmanned ship to be transported to a target testing water area, and meanwhile it is guaranteed that the ship body is kept horizontal and stable as much as possible when entering the testing water area.

Description

Technical Field

[0001] The utility model relates to the field of unmanned ship components, and more specifically, to a rotating shaft assembly and an unmanned ship support device. Background Art

[0002] Underwater topographic survey is a specific survey work in engineering survey, mainly measuring the planar position and elevation of rivers, lakes, reservoirs, port bays, and offshore points for drawing underwater topographic maps. When commonly used unmanned ships are tested in water, generally, they need to be carried by users to shallow water areas by the water. To ensure that testers can safely place the unmanned ship into the test water area for measurement, usually, a test dock is built in a fixed water area measurement area, and temporary transportation devices such as tugboats and cranes are used to transport the unmanned ship from land to the test water area. However, in practical applications, it is difficult to build different test docks for different water areas, resulting in problems of high test costs and great difficulties. In addition, when the unmanned ship is carried to the shallow water area by the water, due to the complex conditions of the shallow beach surface, sundries and stones on the beach surface are likely to cause abrasion to the bottom of the hull. Summary of the Utility Model

[0003] The utility model aims to overcome the defects in the prior art that it is difficult and costly to transport an unmanned ship to the test water area and it is easy to cause abrasion to the hull, and provides a rotating shaft assembly and an unmanned ship support device.

[0004] To solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A rotating shaft assembly includes a fixed fitting and a rotating fitting. A first through hole is provided on the rotating fitting, and the rotating fitting is connected to an installation hole provided on the fixed fitting through a fixed rotating shaft via the first through hole;

[0006] A plurality of pin holes are provided at a circumferential position on the rotating fitting at a fixed distance from the first through hole; a second through hole is provided on the fixed fitting, and an elastic limit pin is connected to the second through hole; when the rotating fitting rotates around the fixed rotating shaft until the second through hole communicates with the pin hole, the pin of the elastic limit pin elastically engages with the pin hole.

[0007] In this technical solution, the rotating fitting is connected to the fixed fitting through a fixed rotating shaft, enabling it to rotate circumferentially around the fixed rotating shaft on the fixed fitting. Further, by configuring pin holes on the rotating fitting and further cooperating with an elastic limit pin to achieve rotation and fixation at a fixed angle. When the rotating fitting rotates around the fixed rotating shaft until the pin hole communicates with the second through hole on the fixed fitting, the pin of the elastic limit pin provided in the second through hole pops out under the action of its internal elastic structure and inserts into the pin hole to achieve elastic engagement, and the rotating shaft assembly realizes rotation and fixation at a certain angle.

[0008] As a preferred solution, a first limiting member is arranged on one side edge of the rotating fitting along the direction of the fixed fitting, and a limiting groove matching the first limiting member is arranged on the fixed fitting; when the rotating fitting rotates around the fixed rotating shaft to an included angle of 0 degrees with the axis of the fixed fitting, the first limiting member is clamped with the limiting groove.

[0009] As a preferred solution, a second limiting member is arranged on the side of the rotating fitting far from the pin hole along the direction of the fixed fitting; when the rotating fitting rotates around the fixed rotating shaft to an included angle of 90 degrees with the axis of the fixed fitting, the second limiting member abuts against the side edge of the fixed fitting.

[0010] As a preferred solution, taking the first through hole as the origin, a first pin hole and a second pin hole are respectively arranged on the rotating fitting along a horizontal direction and a vertical direction of the origin.

[0011] As a preferred solution, the side surface of the rotating fitting far from the first through hole is of a U-shaped opening structure; the side surface of the fixed fitting far from the second through hole is of a U-shaped opening structure.

[0012] Furthermore, the present utility model applies the above-mentioned rotating shaft assembly to propose an unmanned ship support device. The device includes a first support frame and a second support frame connected by a plurality of foldable brackets. Among them, the foldable bracket includes a first connecting member and a second connecting member connected by hinges, and one ends of the first connecting member and the second connecting member are respectively connected with the rotating shaft assembly as proposed by the present utility model; the fixed fitting in the rotating shaft assembly is fixedly connected with the first support frame or the second support frame, and the rotating fitting in the rotating shaft assembly is fixedly connected with the first connecting member or the second connecting member.

[0013] As a preferred solution, the first connecting member and the second connecting member are hinged through a fixed hinge support; among them, the fixed hinge support includes a support with a U-shaped opening structure and two fixing members. Third through holes are respectively opened on both side walls of the support, a fourth through hole is opened at one end of the fixing member, and the support is connected with the fourth through hole opened on the fixing member through a bolt passing through the third through hole; the other end of the fixing member is of a U-shaped opening structure, and fifth through holes are respectively opened on both side walls thereof, and the fixing member is connected with the end of the first connecting member or the second connecting member through a bolt passing through the fifth through hole.

[0014] As a preferred solution, the foldable brackets are arranged on the opposite sides between the first support frame and the second support frame. Among them, the U-shaped openings of the supports on the opposite sides are respectively arranged facing each other or back to back; the rotation directions of the rotating fittings of the rotating shaft assemblies arranged at both ends of the foldable brackets are arranged in opposite directions.

[0015] As a preferred solution, a number of rubber rollers are provided on the first support frame and / or the second support frame.

[0016] As a preferred solution, the first support frame and the second support frame comprise high-strength lightweight support frames.

[0017] Compared with the prior art, the beneficial effects of the technical solution of the present utility model are as follows:

[0018] In the present utility model, a rotating shaft assembly is designed, and its rotating fitting is connected to the fixed fitting through a fixed rotating shaft, enabling it to rotate circumferentially around the fixed rotating shaft on the fixed fitting to form a rotating shaft structure. Further, by configuring a pin hole on the rotating fitting and cooperating with an elastic limit pin, the rotation and fixation at a fixed angle can be realized, effectively avoiding the loosening of the connection assembly connected to the rotating shaft assembly.

[0019] The present utility model also designs an unmanned boat support device, which uses the above rotating shaft assembly to form a foldable bracket to realize the foldability of the whole device, assist in transporting the unmanned boat to the target test water area, and at the same time ensure that the hull is as horizontal and stable as possible when entering the test water area; when the test operation is completed, the whole device is stored through the foldable bracket, which has the characteristics of small occupied space and convenient handling and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural view of a rotating shaft assembly shown according to an embodiment of the present utility model.

[0021] Figure 2 FIG. is an exploded view of a rotating shaft assembly shown according to an embodiment of the present utility model.

[0022] Figure 3 FIG. is a schematic view of the rotating state of a rotating shaft assembly shown according to an embodiment of the present utility model.

[0023] Figure 4 For Figure 3 shown, the sectional view taken along line A-A' of the rotating shaft assembly.

[0024] Figure 5 FIG. is another schematic view of the rotating state of a rotating shaft assembly shown according to an embodiment of the present utility model.

[0025] Figure 6 For Figure 5 shown, the sectional view taken along line B-B' of the rotating shaft assembly.

[0026] Figure 7 FIG. is a schematic structural view of an unmanned boat support device shown according to an embodiment of the present utility model.

[0027] Figure 8This is a schematic diagram of the usage state of the unmanned boat support device shown according to an embodiment of the present utility model.

[0028] Figure 9 This is a schematic diagram of the folded state of the unmanned boat support device shown according to an embodiment of the present utility model.

[0029] Figure 10 This is a schematic diagram of the structure of the foldable bracket shown according to an embodiment of the present utility model.

[0030] Among them, 100 - fixed fitting, 101 - mounting hole, 102 - second through hole, 200 - rotating fitting, 201 - first through hole, 210 - pin hole, 211 - first pin hole, 212 - second pin hole, 220 - first limiting member, 230 - second limiting member, 300 - fixed rotating shaft, 400 - elastic limiting pin, 500 - foldable bracket, 510 - first connecting member, 520 - second connecting member, 530 - fixed hinge support, 531 - support, 532 - fixing member, 600 - first support frame, 700 - second support frame, 800 - rubber roller. Detailed implementation manners

[0031] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present utility model. On the contrary, they are merely examples of the devices and methods consistent with some aspects of the present utility model as detailed in the appended claims.

[0032] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The singular forms "a", "the", and "said" used in the present utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms first, second, third, etc. may be used in the present utility model to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0034] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] Embodiment 1

[0036] This embodiment provides a rotating shaft assembly, as Figure 1 , 2 shown, which is a schematic structural diagram and an exploded view of the rotating shaft assembly of this embodiment.

[0037] In the rotating shaft assembly provided in this embodiment, it includes a fixed fitting 100 and a rotating fitting 200. A first through hole 201 is provided on the rotating fitting 200. The rotating fitting 200 is connected to the mounting hole 101 provided on the fixed fitting 100 through a fixed rotating shaft 300 via the first through hole 201;

[0038] At a circumferential position on the rotating fitting 200 at a fixed distance from the first through hole 201, a plurality of pin holes 210 are provided; a second through hole 102 is provided on the fixed fitting 100, and an elastic limit pin 400 is connected to the second through hole 102; when the rotating fitting 200 rotates around the fixed rotating shaft 300 until the second through hole 102 communicates with the pin hole 210, the pin of the elastic limit pin 400 is elastically clamped with the pin hole 210.

[0039] In this embodiment, the rotating fitting 200 is connected to the fixed fitting 100 through the fixed rotating shaft 300, enabling it to rotate circumferentially around the fixed rotating shaft 300 on the fixed fitting 100 to form a rotating shaft structure. Further, by configuring the pin holes 210 on the rotating fitting 200 and further cooperating with the elastic limit pin 400, rotation and fixation at a fixed angle are realized. When the rotating fitting 200 rotates around the fixed rotating shaft 300 until the pin hole 210 communicates with the second through hole 102 on the fixed fitting 100, the pin of the elastic limit pin 400 provided in the second through hole 102 pops out under the action of its internal elastic structure and inserts into the pin hole 210 to achieve elastic clamping, and the rotating shaft assembly realizes rotation and fixation at a certain angle.

[0040] In this embodiment, the opening position of the pin hole 210 can be designed according to the rotation angle requirements of the connecting member in the actual application scenario.

[0041] In an alternative embodiment, on the rotating fitting 200, taking the first through hole 201 as the origin, a first pin hole 211 and a second pin hole 212 are respectively provided along a horizontal direction and a vertical direction of the origin.

[0042] Exemplarily, the first pin hole 211 and the second pin hole 212 on the rotating fitting 200 are respectively located in the x-axis direction and the y-axis direction of the first through hole 201.

[0043] During use, when the rotating fitting 200 rotates around the origin to an angle of 0 degrees with respect to the axis of the fixed fitting 100, the pin of the elastic limit pin 400 is elastically clamped with the first pin hole 211; when the rotating fitting 200 rotates around the origin to an angle of 90 degrees with respect to the axis of the fixed fitting 100, the pin of the elastic limit pin 400 is elastically clamped with the second pin hole 212.

[0044] In this embodiment, through the cooperation of the pin holes 210 and the elastic limit pins 400, the accuracy of the rotation angle and the stability of the rotating shaft structure are ensured.

[0045] In an alternative embodiment, a first limiting member 220 is provided on one side edge of the rotating fitting 200 in the direction of the fixed fitting 100, and a limiting groove matching the first limiting member 220 is provided on the fixed fitting 100; when the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 0 degrees with respect to the axis of the fixed fitting 100, the first limiting member 220 is clamped with the limiting groove.

[0046] Exemplarily, as Figure 3 、 4 shown, is a schematic diagram of the rotation state and a cross-sectional view of the rotating shaft assembly of this embodiment. The figure shows the state when the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 0 degrees with respect to the axis of the fixed fitting 100, where the first limiting member 220 is clamped with the limiting groove.

[0047] Further optionally, the first limiting member 220 is provided on one side edge of the rotating fitting 200 close to the first pin hole 211. When the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 0 degrees with respect to the axis of the fixed fitting 100, the pin of the elastic limit pin 400 is elastically clamped with the first pin hole 211, and at the same time, the first limiting member 220 is clamped with the limiting groove to achieve anti-fooling.

[0048] Furthermore, in an alternative embodiment, a second limiting member 230 is provided on the side of the rotating fitting 200 away from the pin hole 210 in the direction of the fixed fitting 100; when the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 90 degrees with respect to the axis of the fixed fitting 100, the second limiting member 230 abuts against the side edge of the fixed fitting 100.

[0049] Exemplarily, as Figure 5 、 6 shown, is another schematic diagram of the rotation state and a cross-sectional view of the rotating shaft assembly of this embodiment. The figure shows the state when the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 90 degrees with respect to the axis of the fixed fitting 100.

[0050] Further optionally, the second limiting member 230 is disposed on a side of the rotating fitting 200 away from the first pin hole 211. When the rotating fitting 200 rotates around the fixed rotating shaft 300 to an angle of 90 degrees with the axis of the fixed fitting 100, the pin of the elastic limiting pin 400 is elastically clamped with the second pin hole 212. At this time, the second limiting member 230 abuts against the side of the fixed fitting 100 to achieve anti-misoperation.

[0051] Further, in an alternative embodiment, a side surface of the rotating fitting 200 away from the first through hole 201 is a U-shaped opening structure; a side surface of the fixed fitting 100 away from the second through hole 102 is a U-shaped opening structure.

[0052] Wherein, the U-shaped opening structures formed on the rotating fitting 200 and the fixed fitting 100 are used to connect and fix a connecting member for connecting with the rotating shaft assembly, so as to form a device or component with rotatable and lockable angles. This embodiment is particularly suitable for cooperating with a connecting member to form a foldable device.

[0053] Embodiment 2

[0054] This embodiment provides an unmanned boat support device composed of the rotating shaft assembly proposed in Embodiment 1. As Figure 7 shown, it is a schematic structural diagram of the unmanned boat support device of this embodiment.

[0055] In the unmanned boat support device proposed in this embodiment, it includes a first support frame 600 and a second support frame 700 connected by a plurality of foldable brackets 500. Among them, the foldable bracket 500 includes a first connecting member 510 and a second connecting member 520 connected by hinges, and one ends of the first connecting member 510 and the second connecting member 520 are respectively connected with the rotating shaft assembly proposed in Embodiment 1; the fixed fitting 100 in the rotating shaft assembly is connected and fixed with the first support frame 600 or the second support frame 700, and the rotating fitting 200 in the rotating shaft assembly is connected and fixed with the first connecting member 510 or the second connecting member 520.

[0056] In this embodiment, the foldable bracket 500 is used to connect the first support frame 600 and the second support frame 700 to form a bracket main body. Among them, the foldable bracket 500 adopts the rotating shaft assembly capable of realizing rotation and fixation at a certain angle, so as to realize the foldability of the whole bracket, which is convenient for handling and storage.

[0057] In a specific implementation process, when the unmanned boat needs to be launched for testing, the rotating fitting 200 in the rotating shaft assembly is rotated clockwise or counterclockwise until the first connecting piece 510 and the second connecting piece 520 are in a vertical state, that is, when the rotating fitting 200 rotates around the origin to an angle of 0 degrees with the axis of the fixed fitting 100, the corresponding pin hole 210 is clamped and locked by the elastic limit pin 400. At this time, the support device of the unmanned boat is completed. Then, the unmanned boat is placed on the bracket body. The width of the hull of the unmanned boat matches the unfolded width of the bracket. The two wings of the hull are placed on the first support frame 600 and the second support frame 700 to complete the support of the unmanned boat, which is convenient for the transportation of the unmanned boat and at the same time ensures that the hull is as horizontal as possible when placed in the water area for testing. As Figure 8 shown, it is a schematic diagram of the use state of the support device of the unmanned boat in this embodiment.

[0058] When entering the test water area, the hull together with the support device is placed in the shoal until it is confirmed that the bottom of the hull is safely in contact with the water surface and there are no obstacles, and then the hull and the support device are unlocked. Under the action of gravity, the hull will slide along the support frame into the water and start normal operations.

[0059] After the operation is completed, the support frame is placed in the shoal, the hull is pulled up and moved above the support device, and then the hull together with the support device is towed from the shoal to the shore. After the support device is used, it is folded and stored, which has the characteristics of small occupied space and is convenient for handling and storage. As Figure 9 shown, it is a schematic diagram of the use state of the support device of the unmanned boat in this embodiment.

[0060] In an alternative embodiment, the first connecting piece 510 and the second connecting piece 520 are hinged through a fixed hinge support 530; wherein, the fixed hinge support 530 includes a support 531 with a U-shaped opening structure and two fixing pieces 532. Third through holes are respectively opened on both side walls of the support 531, and a fourth through hole is opened at one end of the fixing piece 532. The support 531 is connected to the fourth through hole opened on the fixing piece 532 through a bolt; the other end of the fixing piece 532 is a U-shaped opening structure, and fifth through holes are respectively opened on both side walls thereof. The fixing piece 532 is connected to the end of the first connecting piece 510 or the second connecting piece 520 through a bolt passing through the fifth through hole.

[0061] Exemplarily, as Figure 10 shown, it is a schematic diagram of the structure of the foldable bracket in this embodiment.

[0062] Among them, in the fixed hinge support 530, the U-shaped opening direction is designed according to the use scenario of the support device.

[0063] In an alternative embodiment, the collapsible bracket 500 is disposed on opposite sides between the first support bracket 600 and the second support bracket 700, wherein the U-shaped openings of the supports 531 on the opposite sides are respectively arranged facing each other or away from each other; the rotation directions of the rotating shaft assemblies provided at both ends of the collapsible bracket 500 are arranged in opposite directions.

[0064] Preferably, the U-shaped openings of the supports 531 on the opposite sides are respectively arranged facing each other. Then, when the collapsible bracket 500 is in the folded state, the collapsible bracket 500 folds inward, facilitating the storage of the support device.

[0065] Further alternatively, in the collapsible bracket 500, the side surface of the rotating fitting 200 in the rotating shaft assembly away from the first through hole 201 is a U-shaped opening structure; the side surface of the fixed fitting 100 in the rotating shaft assembly away from the second through hole 102 is a U-shaped opening structure. The U-shaped opening structures provided on the rotating fitting 200 and the fixed fitting 100 in the rotating shaft assembly are used to be respectively connected and fixed to the first support bracket 600, the second support bracket 700, the first connecting member 510, and the second connecting member 520.

[0066] Exemplarily, as Figures 7 to 9 shown, one end of the first connecting member 510 is connected to the first support bracket 600 through a first rotating shaft assembly. The U-shaped opening structure of the fixed fitting 100 in the first rotating shaft assembly is connected and fixed to the first support bracket 600, and the U-shaped opening structure of the rotating fitting 200 in the first rotating shaft assembly is connected and fixed to one end of the first connecting member 510, enabling the first connecting member 510 to rotate 90 degrees relative to the first support bracket 600 in the counterclockwise or clockwise direction.

[0067] The other end of the first connecting member 510 is rotatably connected to the support 531 through a fixing member 532. One end of the fixing member 532 is a U-shaped opening structure for connecting and fixing to the end of the first connecting member 510.

[0068] One end of the second connecting member 520 is connected to the second support bracket 700 through a second rotating shaft assembly. The U-shaped opening structure of the fixed fitting 100 in the second rotating shaft assembly is connected and fixed to the second support bracket 700, and the U-shaped opening structure of the rotating fitting 200 in the second rotating shaft assembly is connected and fixed to one end of the second connecting member 520, enabling the second connecting member 520 to rotate 90 degrees relative to the second support bracket 700 in the clockwise or counterclockwise direction.

[0069] The other end of the second connecting member 520 is rotatably connected to the support 531 through another fixing member 532. One end of this fixing member 532 is also a U-shaped opening structure for connecting and fixing to the end of the second connecting member 520.

[0070] Thus, when the foldable bracket 500 of this embodiment is in the supporting state, the first rotating shaft assembly, the first connecting member 510, the second connecting member 520, and the second rotating shaft assembly are in a straight line state. At this time, in the first rotating shaft assembly and the second rotating shaft assembly, the axis angle between the rotating fitting 200 and the fixed fitting 100 is 0 degree, and the elastic limit pin 400 and the corresponding pin hole 210 are in a clamped and locked state.

[0071] When it is necessary to store the supporting device, an external force is applied to the foldable bracket 500 to rotate the first connecting member 510 counterclockwise by 90 degrees and the second connecting member 520 clockwise by 90 degrees until the elastic limit pin 400 in the first rotating shaft assembly and the second rotating shaft assembly is clamped and locked with the corresponding pin hole 210, that is, the storage of the supporting device is completed.

[0072] Further, in an optional embodiment, a plurality of rubber rollers 800 are provided on the first support frame 600 and / or the second support frame 700.

[0073] The added rubber rollers 800 in this embodiment are used to assist in the transmission of the hull. Among them, when the unmanned ship is placed on the first support frame 600 and the second support frame 700 and transported to the target test water area, the hull is unlocked from the supporting device, and the hull will slide along the rubber rollers 800 on the first support frame 600 and the second support frame 700 into the water under the action of gravity to start normal operations.

[0074] Further optionally, one side of the first support frame 600 and the second support frame 700 where the rubber rollers 800 are provided is inclined. During use, the front section of the hull is placed on a lower layer, and the front handle of the hull can be simply fixed to the foldable bracket at the front end of the support frame by a rope to ensure that the hull is as horizontal and stable as possible when entering the test water area.

[0075] Further, in an optional embodiment, the first support frame 600 and the second support frame 700 include high-strength lightweight support frames.

[0076] Further, the bottom of the high-strength lightweight support frame adopts an arc-shaped design similar to the working principle of a sled. At the same time, the width dimension of the support frame is as small as possible while ensuring strength, which is convenient for the overall handling and movement of the supporting device.

[0077] The same or similar reference numerals correspond to the same or similar components;

[0078] The terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent;

[0079] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A rotating shaft assembly, characterized in that, It includes a fixed fitting (100) and a rotating fitting (200). A first through hole (201) is provided on the rotating fitting (200). The rotating fitting (200) is connected to an installation hole (101) provided on the fixed fitting (100) through a fixed rotating shaft (300) via the first through hole (201). At a circumferential position on the rotating fitting (200) at a fixed distance from the first through hole (201), a number of pin holes (210) are provided. A second through hole (102) is provided on the fixed fitting (100), and an elastic limit pin (400) is connected to the second through hole (102). When the rotating fitting (200) rotates around the fixed rotating shaft (300) until the second through hole (102) communicates with the pin hole (210), the pin of the elastic limit pin (400) is elastically clamped with the pin hole (210).

2. The shaft assembly according to claim 1, wherein, On one side edge of the rotating fitting (200) in the direction of the fixed fitting (100), a first limiting member (220) is provided. A limiting groove matching the first limiting member (220) is provided on the fixed fitting (100). When the rotating fitting (200) rotates around the fixed rotating shaft (300) until the included angle with the axis of the fixed fitting (100) is 0 degree, the first limiting member (220) is clamped with the limiting groove.

3. The shaft assembly according to claim 2, wherein, On the side of the rotating fitting (200) far from the pin hole (210) in the direction of the fixed fitting (100), a second limiting member (230) is provided. When the rotating fitting (200) rotates around the fixed rotating shaft (300) until the included angle with the axis of the fixed fitting (100) is 90 degrees, the second limiting member (230) abuts against the side of the fixed fitting (100).

4. The rotating shaft assembly according to any one of claims 1 to 3, characterized in that, Taking the first through hole (201) as the origin on the rotating fitting (200), a first pin hole (211) and a second pin hole (212) are respectively provided along a horizontal direction and a vertical direction of the origin.

5. The rotating shaft assembly according to any one of claims 1 to 3, characterized in that, The side surface of the rotating fitting (200) far from the first through hole (201) is of a U-shaped opening structure. The side surface of the fixed fitting (100) far from the second through hole (102) is of a U-shaped opening structure.

6. An unmanned ship support device, characterized in that, It includes a first support frame (600) and a second support frame (700) connected by a number of foldable brackets (500), where: The foldable bracket (500) includes a first connecting member (510) and a second connecting member (520) connected by hinges. One ends of the first connecting member (510) and the second connecting member (520) are respectively connected to a rotating shaft assembly as described in any one of claims 1 to 5. The fixed fitting (100) in the rotating shaft assembly is fixedly connected to the first support frame (600) or the second support frame (700), and the rotating fitting (200) in the rotating shaft assembly is fixedly connected to one end of the first connecting member (510) or the second connecting member (520).

7. The unmanned ship support device according to claim 6, characterized in that, The first connecting member (510) and the second connecting member (520) are hinged through a fixed hinge support (530); wherein, the fixed hinge support (530) includes a support (531) with a U-shaped opening structure and two fixing members (532), third through holes are respectively formed in two side walls of the support (531), a fourth through hole is formed at one end of the fixing member (532), and the support (531) is connected to the fourth through hole formed in the fixing member (532) through a bolt passing through the third through hole; the other end of the fixing member (532) is of a U-shaped opening structure, fifth through holes are respectively formed in two side walls thereof, and the fixing member (532) is connected to the end of the first connecting member (510) or the second connecting member (520) through a bolt passing through the fifth through hole.

8. The unmanned ship support device according to claim 7, characterized in that, The foldable bracket (500) is arranged on opposite sides between the first support frame (600) and the second support frame (700), wherein the U-shaped openings of the supports (531) on the opposite sides are respectively arranged facing each other or facing away from each other; the rotation directions of the rotating shaft assemblies arranged at both ends of the foldable bracket (500) are arranged in opposite directions.

9. The unmanned ship support device according to any one of claims 6 to 8, characterized in that, A plurality of rubber rollers (800) are arranged on the first support frame (600) and / or the second support frame (700).

10. The unmanned ship support device according to any one of claims 6 to 8, characterized in that, The first support frame (600) and the second support frame (700) include high-strength lightweight support frames.

Images