Port defense system with adaptively adjustable net height and adjustment method thereof

Abstract

The present invention discloses a port defense system with adaptively adjustable net height and an adjustment method thereof, and relates to the technical field of marine engineering equipment. The port defense system comprises a net, a main cable, two winches, a sea surface distance detection sensor, two floating automatic lifting devices, a plurality of buoys and a control unit. The winches and the floating automatic lifting devices are adjacent, and the buoys are connected in sequence and arranged on the top of the net. The outermost one of the buoys remains stationary relative to one floating automatic lifting device, and the other is connected to a position of the main cable adjacent to another floating automatic lifting device, so that the net is operably maintained between the two floating automatic lifting devices, and the opposite ends of the main cable are operably connected to the two winches, respectively. The control unit controls the floating automatic lifting device to switch between an adjustment state and a locking state according to detection data of the sea surface distance detection sensor, so that the net height can adapt to changes in the sea surface.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a port defense system with a self-adaptive adjustable net height and an adjustment method thereof. Background Art

[0002] The existing impact-resistant port defense net system has a floating unit on the water surface. The rise and fall of the sea surface with the tide will affect the height of the defense net and the force on the stabilization system. There are generally two measures to deal with this situation: the defense net is highly fixed and a constant tension winch is used to retract and release the steel cable supporting the net to allow the net to rise and fall with the floating body.

[0003] The highly fixed defense net can ensure that the steel cables that pull the net horizontally are appropriately relaxed when the net is fully open or fully closed, and the surface anti-collision buoy can withstand the changes in the force of the steel cables when the tide or sea level changes. However, the main problem is that when there are strong winds and waves in the harbor, the net and its supporting components will shake in the direction of the steel cables, and the net will swing violently in the vertical direction of protection. At the groove of the base, the net is prone to collision with the wall, damaging the net and / or the building. In addition, the steel cables used to pull the net open and closed are frequently shaken and worn severely, which will shorten their service life.

[0004] The method of using a constant tension winch to automatically retract and release the steel cable is limited to use in ports where there is not much wind and waves all year round. This is because the net is impacted by wind and waves, causing the tension of the retracted and released steel cable to change frequently and the fluctuation range is difficult to determine. Even if a fixed pulley is added, it is still difficult to determine the cause of the change in the steel cable tension. It is difficult to make decisions on retracting and releasing the cable based on changes in tension or tension, and it cannot be accurately controlled. Summary of the invention

[0005] One object of the present invention is to provide a port defense system with adaptively adjustable net height and an adjustment method thereof, wherein the height of the net of the port defense system can be adaptively adjusted with tidal changes to ensure the stability and safety of the port defense system during the automatic adjustment of the net height under all-weather sea conditions.

[0006] One object of the present invention is to provide a port defense system with adaptively adjustable net height and an adjustment method thereof, wherein when the floating automatic lifting device of the port defense system is in an adjustment state, the height of the net can be adjusted based on buoyancy to adapt to the sea level, and when the floating automatic lifting device is in a locked state, the height of the net remains unchanged. In this way, the port defense system can not only solve the problem that the height of the net is difficult to adaptively adjust with tidal changes, but also enable the height of the net to remain unchanged for a period of time, so as to avoid causing additional burden to the control unit and winch of the port defense system.

[0007] According to one aspect of the present invention, the present invention provides a port defense system with a mesh body height that can be adaptively adjusted, comprising:

[0008] Net body;

[0009] Main cable;

[0010] two winches;

[0011] Sea surface distance detection sensor;

[0012] Two floating automatic lifting devices, wherein one of the floating automatic lifting devices and one of the winches are disposed adjacently on the left side of the port, and the other of the floating automatic lifting devices and another of the winches are disposed adjacently on the right bank of the port, and the floating automatic lifting devices are located inside the winches, wherein the floating automatic lifting devices have an adjustment state and a locking state, and the floating automatic lifting devices can be switched between the adjustment state and the locking state, wherein opposite ends of the main cable are operably connected to the two winches after respectively passing around the two floating automatic lifting devices, and wherein the sea surface distance detection sensor is disposed adjacent to the floating automatic lifting devices;

[0013] A plurality of buoys, wherein the buoys are sequentially connected and arranged on the top of the net body, the leftmost one of the buoys is constructed to remain stationary relative to one of the floating self-elevating devices, the rightmost other one is fixedly connected to the main cable at a position adjacent to another floating self-elevating device, and the remaining buoys are movably connected to the main cable so that the net body is operably held between two floating self-elevating devices, wherein adjacent buoys are connected by flexible pull ropes; and

[0014] A control unit, wherein the sea surface distance detection sensor and the two floating automatic lifting devices are respectively connected to the control unit, and the control unit controls the floating automatic lifting device to switch between the adjustment state and the locking state according to the detection data of the sea surface distance detection sensor.

[0015] According to one embodiment of the present invention, the floating automatic lifting device comprises a buoyancy component, a hydraulic power component, a pulley component and two columns, wherein the hydraulic power component is arranged above the buoyancy component, and the two opposite sides of the hydraulic power component are respectively provided with a retractable locking pin, wherein the pulley component is arranged above the hydraulic power component, and the pulley component comprises a pulley frame and a main pulley rotatably arranged on the pulley frame, wherein the two columns are arranged at intervals from each other to form a floating space, an outer opening and an inner opening of the floating automatic lifting device between the two columns, and the two Each of the columns has a row of locking holes distributed along the height direction, and the locking holes are connected to the floating space, wherein the buoyancy assembly, the hydraulic power assembly and the pulley assembly are movably arranged in the floating space, and one end of the main cable enters the floating space after passing through the inner opening, and extends out through the outer opening after bypassing the main pulley in the floating space, wherein the control unit controls the extension and retraction state of the locking pin of the hydraulic power assembly according to the detection data of the sea surface distance detection sensor, so that the floating automatic lifting device switches between the adjustment state and the locking state.

[0016] According to one embodiment of the present invention, the column includes a main board and two side plates, and the two side plates extend outward from opposite sides of the main board respectively to form a limiting groove between the main board and the two side plates, wherein the floating automatic lifting device includes a top stabilizing assembly and a bottom stabilizing assembly, the top stabilizing assembly includes two top stabilizing frames and four top stabilizing wheels, and each of the top stabilizing frames is respectively provided with a top stabilizing wheel at the opposite ends, and the hydraulic power assembly is respectively provided with a top stabilizing frame at the opposite ends, the top stabilizing frame is located in the limiting groove of the column, and the two top stabilizing wheels provided on the top stabilizing frame are respectively rollably pressed against the two side plates of the column, the bottom stabilizing assembly includes a bottom stabilizing frame and four bottom stabilizing wheels, and the four corners of the bottom stabilizing frame are respectively provided with a bottom stabilizing wheel, the bottom stabilizing frame is located below the buoyancy assembly, and the end of the bottom stabilizing frame is located in the limiting groove of the column, and the two bottom stabilizing wheels provided at this end of the bottom stabilizing frame are respectively rollably pressed against the two side plates of the column.

[0017] According to one embodiment of the present invention, the top stabilizing frame has an axis stabilizing hole, and the locking pin of the hydraulic power assembly is movably disposed in the axis stabilizing hole of the top stabilizing frame.

[0018] According to one embodiment of the present invention, the top stabilizing assembly comprises an anti-collision block, which is arranged on the outer side of the top stabilizing frame and faces the main board of the column.

[0019] According to one embodiment of the present invention, the floating automatic lifting device includes a counterweight block, the counterweight block is arranged below the buoyancy component, and the bottom stabilizing component is arranged below the counterweight block.

[0020] According to one embodiment of the present invention, the floating automatic lifting device includes a plurality of locking rod assemblies, each of the locking rod assemblies includes a rod body, a top nut and a bottom nut, the pulley assembly has a plurality of first through-holes, the hydraulic power assembly has a plurality of second through-holes, the buoyancy assembly has a plurality of third through-holes, the counterweight block has a plurality of fourth through-holes, and the bottom stabilization assembly has a plurality of fifth through-holes. After the top of the rod body passes through the fifth through-hole of the bottom stabilization assembly, the fourth through-hole of the counterweight block, the third through-hole of the buoyancy assembly, the second through-hole of the hydraulic power assembly and the first through-hole of the pulley assembly in sequence, the top nut is screwed onto the top of the rod body and the bottom nut is screwed onto the bottom of the rod body, so that the pulley assembly, the hydraulic power assembly, the buoyancy assembly, the counterweight block and the bottom stabilization assembly are assembled into a whole by the locking rod assembly.

[0021] According to one embodiment of the present invention, the top and bottom of the rod body respectively have insertion holes, and the locking rod assembly includes two stop pins, one of the stop pins is inserted into the insertion hole at the top of the rod body to prevent the top nut from falling off from the top of the rod body, and the other stop pin is inserted into the insertion hole at the bottom of the rod body to prevent the bottom nut from falling off from the bottom of the rod body.

[0022] According to another aspect of the present invention, the present invention further provides a method for adjusting the height of a mesh body in an adaptive manner, wherein the method comprises the following steps:

[0023] Acquiring detection data through the sea surface distance detection sensor, wherein the detection data is the height of the sea surface;

[0024] The control unit determines whether the height of the mesh needs to be adjusted according to the detection data;

[0025] When the control unit confirms that the height of the net body needs to be adjusted, the control unit controls the floating automatic lifting device to switch from the locked state to the adjusted state. At this time, the height of the net body is adjusted based on buoyancy to adapt to the sea surface height. After the height of the net body is adjusted, the control unit controls the floating automatic lifting device to switch from the adjusted state to the locked state; when the control unit confirms that the height of the net body does not need to be adjusted, the control unit controls the floating automatic lifting device to remain in the locked state.

[0026] According to one embodiment of the present invention, when the control unit controls the floating automatic lifting device to switch from the adjusting state to the locking state, first, it is confirmed whether the locking pin of the hydraulic power assembly of the floating automatic lifting device is aligned with the locking hole of the column in the horizontal direction, and secondly, when the locking pin of the hydraulic power assembly is aligned with the locking hole of the column in the horizontal direction, the locking pin of the hydraulic power assembly is allowed to be inserted into the locking hole of the column, so that the floating automatic lifting device is switched to the locking state.

[0027] Compared with the prior art, the port defense system of the present invention has at least the following beneficial effects:

[0028] First, the port defense system detects the height of the sea surface through the sea surface distance detection sensor, and the control unit controls the floating automatic lifting device to switch between the adjustment state and the locking state according to the detection data of the sea surface distance detection sensor. When the amplitude of high tide or low tide is too large, the control unit controls the floating automatic lifting device to switch to the adjustment state to allow the height of the net body to adapt to the sea surface height based on buoyancy adjustment. After the height of the net body is adjusted, the control unit controls the floating automatic lifting device to switch to the locking state so that the height of the net body remains unchanged for a period of time. In this way, the port defense system can not only solve the problem that the height of the net body is difficult to adjust adaptively with the change of tide, but also avoid causing additional burden to the housing, the control unit, the winch and other mechanisms of the port defense system;

[0029] Second, when the control unit controls the floating automatic lifting device to switch to the locked state, the control unit can confirm whether the locking pin of the hydraulic power assembly is aligned with the locking hole of the column in the horizontal direction. When the locking pin of the hydraulic power assembly is aligned with the locking hole of the column in the horizontal direction, the control unit controls the locking pin of the hydraulic power assembly to extend so as to be inserted into the locking hole of the column to switch the floating automatic lifting device to the locked state. In this way, the locking pin of the hydraulic power assembly can be prevented from being damaged by force.

[0030] Other beneficial effects and features of the present invention will be further disclosed and explained in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of a port defense system with adaptively adjustable mesh height according to a preferred embodiment of the present invention.

[0032] Figure 2 It is a three-dimensional schematic diagram of a floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention.

[0033] Figure 3 It is a cross-sectional schematic diagram of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention.

[0034] Figure 4A and Figure 4B They are respectively cross-sectional schematic diagrams of the local positions of the floating automatic lifting device of the port defense system in different states according to the above preferred embodiments of the present invention.

[0035] Figure 5 It is a three-dimensional schematic diagram of a partial structure of the floating automatic lifting device of the port defense system according to the above-mentioned preferred embodiment of the present invention, which shows the relationship between a buoyancy component, a hydraulic power component, a pulley component, a top stabilization component, a bottom stabilization component and a counterweight block of the floating automatic lifting device.

[0036] Fig. 6A and Figure 6B They are respectively schematic diagrams of the exploded views of the local structure of the floating automatic lifting device of the port defense system according to the preferred embodiment of the present invention from different perspectives.

[0037] Figure 7 It is a partial schematic diagram of a pulley assembly of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention, which shows the relationship between the pulley assembly and a main cable.

[0038] Fig. 8A and Figure 8B They are three-dimensional schematic diagrams from different perspectives of another local structure of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention, which show a part of the buoyancy component.

[0039] Fig.9A and Fig. 9B They are respectively schematic diagrams of the exploded views of the local structure of the floating automatic lifting device of the port defense system according to the preferred embodiment of the present invention from different perspectives.

[0040] Fig.10 It is a cross-sectional schematic diagram of the above-mentioned local structure of the above-mentioned floating automatic lifting device of the port defense system according to the above-mentioned preferred embodiment of the present invention.

[0041] Fig.11A and Fig. 11B They are three-dimensional schematic diagrams from different perspectives of the hydraulic power assembly of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention.

[0042] Fig. 12A and Fig. 12B It is a schematic diagram of the decomposition from different angles of the hydraulic power assembly of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention.

[0043] Fig.13 It is a schematic diagram of the principle of a hydraulic mechanism of the hydraulic power assembly of the floating automatic lifting device of the port defense system according to the above preferred embodiment of the present invention. DETAILED DESCRIPTION

[0044] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0045] Furthermore, on the first aspect, in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0046] Reference is made to the specification of the present invention. Figures 1 to 12B A port defense system with an adaptively adjustable net height (hereinafter referred to as the port defense system) according to a preferred embodiment of the present invention will be disclosed and explained in the following description. The port defense system is used to defend the entrance and exit channels of a port 1000, wherein the port defense system includes two winches 10, two floating automatic lifting devices 20, a net 30, a main cable 40, multiple buoys 50 and a control unit 60.

[0047] One winch 10 and one floating automatic lifting device 20 are arranged adjacently on the left bank of the port 1000, and the floating automatic lifting device 20 is located on the inner side of the winch 10. Another winch 10 and another floating automatic lifting device 20 are arranged adjacently on the right bank of the port 1000, and the floating automatic lifting device 20 is located on the inner side of the winch 10. The two winches 10 and the two floating automatic lifting devices 20 are respectively connected to the control unit 60 so that the working states of the winches 10 and the floating automatic lifting devices 20 are respectively controlled by the control unit 60.

[0048] The specific manner of arranging the two winches 10 on opposite sides of the port 1000 is not limited in the port defense system of the present invention. Figure 1 In the specific example shown, a concrete foundation 2000 can be constructed on opposite sides of the port 1000, and the two winches 10 are respectively arranged on the two concrete foundations 2000, so that the two winches 20 are respectively arranged on opposite sides of the port 1000. Preferably, the concrete foundation 2000 on the left bank has a receiving groove 2001, that is, from a top view, the concrete foundation 2000 on the left bank is roughly "U" shaped, and more preferably, the floating automatic lifting device 20 on the left bank is located in the receiving groove 2001 of the concrete foundation 2000.

[0049] Reference Figure 1The mesh body 30 may be formed by splicing a plurality of detection nets 31 in sequence, and the method of splicing adjacent detection nets 31 is to lock the sides of two adjacent detection nets 31 with a lock, wherein these detection nets 31 may be woven by an optical fiber in a specific manner, and the specific manner is to first weave a plurality of transverse extensions of the detection net 31, then weave the longitudinal extension of the detection net 31, and then lock the cross position of the transverse extension and the longitudinal extension of the detection net 31. The specific size of the detection net 31 may be, but is not limited to, 3.4m×17m, and the number of the detection nets 31 used to splice the mesh body 30 is not limited, and is selected according to the width of the access channel of the port 1000. It is understandable that after splicing a plurality of detection nets 31 to form the mesh body 30, the optical fiber interfaces of adjacent detection nets 31 may be connected to connect in series the optical fibers used to weave these detection nets 31.

[0050] Further, please refer to the attached Figure 1 The net body 30 includes a plurality of net body weight elements 32, and at least one net body weight element 32 is respectively arranged at the bottom of each of the detection nets 31. For example, the net body weight element 32 can be locked to the bottom of the detection net 31 by a lock. Based on the self-gravity of the detection net 31 and the net body weight element 32, the net body 30 can be suspended in the entrance and exit channel of the port 1000.

[0051] The net 30 can be unfolded and folded, wherein when the net 30 is unfolded, the net 30 is suspended at the entrance and exit channel of the port 1000 and closes the entrance and exit channel of the port 1000 to prevent unauthorized ships from passing through the entrance and exit channel of the port 1000; when the net 30 is folded to the receiving groove 2001 of the concrete base 2000 on the left bank, the net 30 opens the entrance and exit channel of the port 1000 to allow authorized ships to pass through the entrance and exit channel of the port 1000.

[0052] The opposite ends of the main cable 40 are operably connected to the two winches 10 after respectively passing around the two floating automatic lifting devices 20, wherein the control unit 60 can perform cable-winding and cable-releasing operations on the main cable 40 by controlling the working states of the two winches 10 to fold in or unfold the net body 30.

[0053] Continue to refer to the attached Figure 1, these buoys 50 are connected in sequence and arranged on the top of the net body 30, and adjacent buoys 50 can be connected by at least one flexible pull rope 51, and the leftmost one of these buoys 50 remains stationary relative to the floating automatic lifting device 20 on the left bank. For example, the leftmost buoy 50 can be connected to the concrete foundation 2000 on the left bank by the pull rope 51, so that the leftmost buoy 50 remains stationary relative to the floating automatic lifting device 20 on the left bank, and the rightmost one is fixedly connected to the position of the main cable 40 adjacent to the floating automatic lifting device 20 on the right bank, and the remaining buoys 50 are all movably connected to the main cable 40, so that the net body 30 is operably maintained between the two floating automatic lifting devices 20.

[0054] In some examples of the port defense system of the present invention, at least one buoy 50 is respectively provided on the top of each detection net 31 of the net body 30, and based on the buoyancy provided by the buoy 50, the net body 30 can be suspended in the inlet and outlet channel of the port 1000. Preferably, the buoy 50 is provided in the middle position of the top of the detection net 31, so that the port defense system can prevent the splicing position of two adjacent detection nets 31 from being pulled, thereby ensuring the safety of the net body 30.

[0055] When the control unit 60 controls the winch 10 on the left bank to reel in the main cable 40 and controls the winch 10 on the right bank to release the main cable 40, the main cable 40 pulls the rightmost buoy 50 to move toward the concrete base 2000 on the left bank. When the rightmost buoy 50 moves to the buoy 50 at the adjacent position, it will continue to move toward the concrete base 2000 on the left bank with this buoy 50. In this way, multiple buoys 50 can move toward the concrete base 2000 on the left bank. In this process, these buoys 50 drive the net body 30 to be retracted to the receiving groove 2001 of the concrete base 2000 on the left bank to open the entrance and exit channel of the port 1000.

[0056] When the control unit 60 controls the winch 10 on the right bank to reel in the main cable 40 and controls the winch 10 on the left bank to release the main cable 40, the main cable 40 pulls the rightmost buoy 50 toward the concrete foundation 2000 on the right bank. When the rightmost buoy 50 moves to the buoy 50 away from the adjacent position, it will be driven by the pull rope 51 to continue moving toward the concrete foundation 2000 on the right bank. In this way, multiple buoys 50 can move toward the concrete foundation 2000 on the right bank. In this process, these buoys 50 drive the net body 30 to unfold. Based on the buoyancy provided by the buoy 50 and the self-weight of the net body 30, the net body 30 can be suspended in the entrance and exit channel of the port 1000 to close the entrance and exit channel of the port 1000.

[0057] It can be understood that after the entrance and exit channels of the port 1000 are closed, invading ships will invade the port 1000 by colliding with the net body 30. In order to effectively defend the port 1000 and withstand multiple collisions of invading ships, when the invading ship hits the net body 30, the control unit 60 controls the two winches 10 to simultaneously release the main cable 40 to reduce the impact force on the net body 30. After the collision, the control unit 60 controls the two winches 10 to simultaneously reel in the main cable 40 so that the net body 30 is stretched again to defend the port 1000. When the stretched net body 30 is hit by the invading ship, the control unit 60 controls the two winches 30 to simultaneously release the main cable 40 again. This is repeated, and the port defense system can not only effectively defend the entrance and exit channels of the port 1000, but also withstand multiple collisions of invading ships in a short period of time.

[0058] It can be understood that, since the buoys 50 are arranged at intervals on the top of the net body 30 and connected to the main cable 40, and the opposite ends of the main cable 40 are respectively operably connected to the winch 10 after passing through the two floating automatic lifting devices 20, the height of the net body 30 can be controlled by the two floating automatic lifting devices 20. Specifically, the floating automatic lifting device 20 has an adjustment state and a locking state, and the control unit 60 can control the floating automatic lifting device 20 to switch between the adjustment state and the locking state. When the control unit 60 controls the floating automatic lifting device 20 to switch from the locking state to the adjustment state, based on the buoyancy provided by the buoys 50, the height of the net body 30 can adapt to the height of the sea surface 3000. When the control unit 60 controls the floating automatic lifting device 20 to switch from the adjustment state to the locking state, the height of the net body 30 is prevented from adapting to the sea surface 3000.

[0059] Preferably, in the attached Figure 1 In this specific example of the port defense system shown, the control unit 60 can automatically control the floating automatic lifting device 20 to switch between the adjustment state and the locking state according to the change of the sea surface 3000. Specifically, the port defense system further includes a sea surface distance detection sensor 70, which is arranged near the floating automatic lifting device 20 on the left bank, and the sea surface distance detection sensor 70 is connected to the control unit 60, wherein the sea surface distance detection sensor 70 can detect the height of the sea surface 3000, and the control unit 60 controls the floating automatic lifting device 20 to switch between the adjustment state and the locking state according to the detection data of the sea surface distance detection sensor 70. For example, when the detection data of the sea surface distance detection sensor 70 indicates that the height of the sea surface 3000 rises or falls beyond the design threshold value (for example, 400 mm), the control unit 60 controls the floating automatic lifting device 20 to switch from the locking state to the adjusting state to allow the height of the net body 30 to adapt to the height of the sea surface 3000 based on the buoyancy provided by the buoy 50. After the height of the net body 30 adapts to the height of the sea surface 3000, the control unit 60 controls the floating automatic lifting device 20 to switch from the adjusting state to the locking state to maintain the height of the net body 30 unchanged. In some other examples of the port defense system of the present invention, the sea surface distance detection sensor 70 is disposed near the floating automatic lifting device 20 on the right bank.

[0060] It can be understood that when the detection data of the sea surface distance detection sensor 70 indicates that the rise or fall of the sea surface 3000 does not exceed the designed threshold value, the control unit 60 controls the floating automatic lifting device 20 to maintain the locked state so that the height of the net body 30 remains unchanged.

[0061] That is to say, when the floating automatic lifting device 20 is in the adjusting state, the height of the net 30 can be adjusted based on the buoyancy provided by the float 50 to adapt to the height of the sea surface 3000, and when the floating automatic lifting device 20 is in the locking state, the height of the net 30 remains unchanged. In this way, the port defense system can not only solve the problem that the height of the net 30 is difficult to adaptively adjust with the changes in tides, but also make the height of the net 30 remain unchanged for a period of time, so as to avoid causing additional burden to the control unit 60 and the winch 10 of the port defense system.

[0062] In the attached Figure 1 In this specific example of the port defense system shown, the sea surface distance detection sensor 70 is arranged on the concrete base 2000 on the left bank, and the sea surface distance detection sensor 70 is located in the receiving groove 2001, so that the sea surface distance detection sensor 70 and the floating automatic lifting device 20 on the left bank are adjacent. In this way, on the one hand, since the height of the sea surface 3000 in the receiving groove 2001 of the concrete base 2000 on the left bank is consistent with the height of the sea surface 3000 of the entrance and exit channel of the port 1000, the sea surface distance detection sensor 70 can detect the sea surface 3000 in the receiving groove 2001 of the concrete base 2000 on the left bank. The height of the sea surface 3000 in the receiving groove 20001 of the earth base 2000 is detected by the method of the height of the sea surface 3000 in the entrance and exit channel of the port 1000. On the other hand, the height of the sea surface 3000 in the receiving groove 20001 of the concrete base 2000 on the left bank is not easily affected by waves, and is calmer than the sea surface in the entrance and exit channel of the port 1000. Therefore, the sea surface distance detection sensor 70 can detect more accurate height data of the sea surface 3000. On the other hand, the sea surface distance detection sensor 70 is not easily hit by other objects, which is conducive to ensuring the safety of the sea surface distance detection sensor 70.

[0063] Preferably, the control unit 60 detects the average height of the sea surface 3000 through the sea surface distance detection sensor 70 by first taking the average of multiple maximum values ​​and the average of multiple minimum values, and then averaging the average of the multiple maximum values ​​and the average of the multiple minimum values. Figures 2 to 12BThe specific structure of the floating automatic lifting device 20 is shown, wherein the floating automatic lifting device 20 includes two columns 21, at least one buoyancy component 22, a hydraulic power component 23 and a pulley component 24, and the floating automatic lifting device 20 has a floating space 201 and an outer opening 202 and an inner opening 203 respectively connected to the floating space 201.

[0064] Specifically, the two columns 211 are arranged at intervals from each other to form the floating space 201, the outer opening 202 and the inner opening 203 of the floating automatic lifting device 20 between the two columns 21. Each column 21 has a row of locking holes 211 distributed along the height direction, and the locking holes 211 of the column 21 are connected to the floating space 201. The hydraulic power assembly 23 is arranged above the buoyancy assembly 22, and the pulley assembly 24 is arranged above the hydraulic power assembly 23. The buoyancy assembly 22, the hydraulic power assembly 23 and the pulley assembly 24 are combined into a whole and are movably arranged in the floating space 201 of the floating automatic lifting device 20.

[0065] In some examples of the port defense system of the present invention, the bottoms of the two columns 21 are fixed to the seabed and the tops are exposed to the sea surface 3000, so that the two columns 21 can be maintained in a face-to-face state, so that the two columns 21 are spaced apart from each other and the floating space 201, the outer opening 202 and the inner opening 203 of the floating automatic lifting device 20 are formed between the two columns 21. In another example of the port defense system of the present invention, the bottoms of the two columns 21 are fixed to the concrete foundation 2000 and the tops are exposed to the plane, so that the two columns 21 can be maintained in a face-to-face state, so that the two columns 21 are spaced apart from each other and the floating space 201, the outer opening 202 and the inner opening 203 of the floating automatic lifting device 20 are formed between the two columns 21.

[0066] Further, see Attachment Figure 2 and Figure 3 The column 21 includes a main plate 212 and two side plates 213, and the two side plates 213 extend outward from opposite sides of the main plate 212 to form a limiting groove 214 between the main plate 212 and the two side plates 213. Preferably, from a side view, the main plate 212 and the two side plates 213 of the column 21 are in an "I" shape, so that the column 21 has a higher strength, ensuring the safety and stability of the port defense system.

[0067] Reference Figures 5 to 6B , FIG. 8A to FIG. 10 The buoyancy assembly 22 includes at least one group of longitudinal baffles 221, at least one group of floating blocks 222, at least two groups of bolts 223 of the floating blocks 222, and at least two transverse baffles 224, wherein each of the longitudinal baffles 221 has a group of longitudinal baffle through-holes 2211 arranged along the height direction, and each of the longitudinal baffles 221 is provided with a longitudinal baffle through-hole 2211 insertion protrusion 2212 at the top and bottom, respectively, and each of the floating blocks 222 has a group of floating block through-holes 2221 arranged along the height direction, these floating blocks 222 are arranged side by side around the central axis of the buoyancy assembly 22, a longitudinal baffle 221 is sandwiched between two adjacent floating blocks 222, and the positions of the respective floating block through-holes 2221 of the floating blocks 222 correspond to the positions of the respective longitudinal baffle through-holes 2211 of the longitudinal baffles 221, and the bolts 223 of each of the floating blocks 222 are respectively inserted into the adjacent two floating blocks 22 2 and the longitudinal partition perforations 2211 of the longitudinal partition 221 are used to assemble a group of the longitudinal partitions 221 and a group of the floating blocks 222, each of the transverse partitions 224 has a plurality of transverse partition perforations 2241, a transverse partition 224 is arranged at the top of a group of the floating blocks 222, and the longitudinal partition perforations 2211 at the top of a group of the longitudinal partitions 221 are inserted into the protrusions 2212 of each transverse partition perforation 2241 of this transverse partition 224, and a transverse partition 224 is arranged at the bottom of a group of the floating blocks 222, and the longitudinal partition perforations 2211 at the bottom of a group of the longitudinal partitions 221 are inserted into the protrusions 2212 of each transverse partition perforation 2241 of this transverse partition 224, so that the transverse partitions 224 can be prevented from moving relative to each of the floating blocks 222 along the horizontal direction.

[0068] Preferably, each of the longitudinal baffles 221 and each of the floating blocks 222 is cylindrical after being assembled, and the transverse baffle 224 is a disc-shaped plate, and the outer diameter of the transverse baffle 224 is not greater than the outer diameter of the cylinder formed by these floating blocks 222, so as to prevent the longitudinal baffle 221 from affecting the buoyancy of the buoyancy assembly 22. More preferably, the transverse baffle 224 has a central through hole 2242, and the gap between two adjacent floating blocks 222 corresponds to the central through hole 2242 of the transverse baffle 224, so as to prevent the longitudinal baffle 221 from affecting the buoyancy of the buoyancy assembly 22.

[0069] Reference Figure 4A , Figure 4B , FIG. 11A to FIG. 12BThe hydraulic power assembly 23 includes a hydraulic mechanism 231 and two locking pins 232. The opposite ends of the hydraulic mechanism 231 are respectively provided with a retractable hydraulic rod 2311. The inner ends of the locking pins 232 are arranged at the outer ends of the hydraulic rod 2311 of the hydraulic mechanism 231. When the hydraulic rod 2311 of the hydraulic mechanism 231 extends outward, the hydraulic mechanism 231 pushes the locking pins 232 to extend outward. When the hydraulic rod 2311 of the hydraulic mechanism 231 retracts inward, the hydraulic mechanism 231 pulls the locking pins 232 to retract inward. In other words, the opposite ends of the hydraulic power assembly 23 are respectively provided with a retractable locking pin 232. The hydraulic mechanism 231 of the hydraulic power assembly 23 is connected to the control unit 60. The control unit 60 can control the telescopic state of the hydraulic rod 2311 of the hydraulic mechanism 231 according to the detection data of the sea surface distance detection sensor 70, thereby controlling the telescopic state of the locking pin 232. When the hydraulic rod 2311 of the hydraulic mechanism 231 pushes the locking pin 232 to extend outward, the locking pin 232 can be inserted into the locking hole 211 of the column 21, so that the floating automatic lifting device 20 is in the locked state. When the hydraulic rod 2311 of the hydraulic mechanism 231 pulls the locking pin 232 to retract inward, the locking pin 232 can withdraw from the locking hole 211 of the column 21, so that the floating automatic lifting device 20 is in the adjustment state. In this way, the control unit 60 can control the floating automatic lifting device 20 to switch between the adjustment state and the locking state.

[0070] Reference Fig.13 The hydraulic mechanism 231 has an oil tank 2312, a hydraulic motor / pump 2313, an electromagnetic control valve 2314, a two-way synchronous balance valve 2315 and two oil cylinders 2316. The hydraulic motor / pump 2313 is connected to the oil tank 2312, the electromagnetic control valve 2314 is connected to the hydraulic motor / pump 2313, the two-way synchronous balance valve 2315 is connected to the electromagnetic control valve 2314 and the two oil cylinders 2316, and the two hydraulic rods 2311 are respectively arranged on the two oil cylinders 2316, wherein the hydraulic motor / pump 2313 and the electromagnetic control valve 2314 are respectively controllably electrically connected to the control unit 60, wherein the hydraulic motor / pump 2313 realizes pressure application, the electromagnetic control valve 2314 can control the on-off of the oil circuit, and the two-way synchronous balancing valve 2315 can realize the synchronization and balance of the horizontal movement of the two oil cylinders 2316, so that the two hydraulic rods 2311 can be synchronously extended outward or retracted inward, avoiding that one of the two hydraulic rods 2311 is subjected to force alone.

[0071] Preferably, continue to refer to the attached Fig.13 The hydraulic mechanism 231 further includes a filter 2317, which is connected to the hydraulic motor / pump 2313 and is arranged in the oil tank 2312. When the hydraulic motor / pump 2313 is pressurized, the hydraulic oil in the oil tank 2312 needs to pass through the filter 2317 so that the filter 2317 can filter impurities in the hydraulic oil.

[0072] Preferably, continue to refer to the attached Fig.13 The hydraulic mechanism 231 further includes an oil level sensor 2318, which is disposed in the oil tank 2312 and connected to the control unit 60. The oil level sensor 2318 is used to detect the amount of hydraulic oil in the oil tank 2312. The control unit 60 can control the working state of the hydraulic motor / pump 2313 and the electromagnetic control valve 2314 according to the amount of hydraulic oil in the oil tank 2312. That is, in the port defense system of the present invention, the remaining amount of hydraulic oil in the oil tank 2312 and the position of the lock pin 232 are one-to-one corresponding, so the control unit 60 can determine the position of the lock pin 232 according to the detection data of the oil level sensor 2318, which is crucial for the control unit 60 to determine the state of the floating automatic lifting device. In other words, the oil level sensor 2318 can feedback the position of the lock pin 232 by detecting the remaining amount of hydraulic oil in the oil tank 2312, thereby feedback the state of the floating automatic lifting device.

[0073] Preferably, continue to refer to the attached Fig.13 The hydraulic mechanism 231 further includes a pressure gauge 2319, which is connected to the hydraulic motor / pump 2313 and the control unit 60, and is used to detect the pressure of the hydraulic oil in the oil circuit.

[0074] Reference Figures 5 to 7 The pulley assembly 24 includes a pulley frame 241 and a main pulley 242 rotatably disposed on the pulley frame 241. The pulley frame 241 is disposed above the hydraulic mechanism 231 of the hydraulic power assembly 23, so that the pulley assembly 24 is disposed above the hydraulic power assembly 23. The end of the main cable 40 extends upward after passing through the inner opening 203 of the floating automatic lifting device 20 and bypassing the main pulley 242, and is operably connected to the winch 10 after passing through the outer opening 202 of the floating automatic lifting device 20. In other words, the main pulley 242 of the pulley assembly 24 mainly functions to change the extension direction of the main cable 40.

[0075] Furthermore, the pulley assembly 24 includes two secondary pulleys 243, and the two secondary pulleys 243 are rotatably arranged on the pulley frame 241, and one of the secondary pulleys 243 is located on the inner side of the main pulley 242 and obliquely below the main pulley 242, and the other secondary pulley 243 is located on the outer side of the main pulley 242 and obliquely below the main pulley 242. The main cable 40 rests on the two secondary pulleys 243, so that the secondary pulley 243 prevents the main cable 40 from falling off the main pulley 242, thereby ensuring that the port defense system is stable and reliable.

[0076] Preferably, the height position of the secondary pulley 243 is higher than the lowest position of the main pulley 242, so that the main cable 40 first rests on the secondary pulley 243 located on the inner side, then passes around the bottom of the main pulley 242 and rests on the secondary pulley 243 located on the outer side before extending upward to ensure that the main cable 40 does not fall off the main pulley 242, thereby ensuring that the port defense system is stable and reliable.

[0077] More preferably, the thickness of the secondary pulley 243 is smaller than the width of the groove 2421 of the primary pulley 242, and a portion of the secondary pulley 243 is located in the groove 2421 of the primary pulley 242, that is, from a side view, referring to the attached Figure 7 The main pulley 242 and the secondary pulley 243 have an overlapping portion, so that the two secondary pulleys 243 cooperate with each other to enable the main cable 40 to reliably bypass the bottom of the main pulley 242 and prevent the main cable 40 from falling from the main pulley 242.

[0078] Furthermore, the pulley frame 241 includes a frame plate 2411 and two frame arms 2412, and the two frame arms 2412 extend upward from opposite ends of the frame plate 2411 in a mutually spaced manner to form a frame groove 2413 between the two frame arms 2412, and each frame arm 2412 has an assembly hole 24121. The pulley assembly 24 further includes an assembly shaft 244 and two bearings 245. The main pulley 242 is fixedly mounted on the middle part of the assembly shaft 244. The opposite ends of the assembly shaft 244 are respectively mounted with a bearing 245, and the inner ring of the bearing 245 is fixedly installed on the assembly shaft 244. The bearing 245 is assembled in the assembly hole 24121 of the frame arm 2412, and the outer end of the bearing 245 is fixed to the frame arm 2412, so that the main pulley 242 is rotatably set on the pulley frame 241.

[0079] Preferably, the pulley frame 241 includes four oil seals 2414, one of which is disposed on opposite sides of each frame arm 2412, and the oil seals 2414 close the opening of the assembly hole 24121 of the frame arm 2412, so that lubricating oil can be filled in the assembly hole 24121 of the frame arm 2412 to play a role in smoothing the bearing 245. The oil seal 2414 can be locked to the frame arm 2412 by a set of screws.

[0080] More preferably, the oil seal cover 2414 disposed on the outer side of the frame arm 2412 has an oil inlet 24141 and an oil outlet 24142, and the oil inlet 24141 and the oil outlet 24142 are respectively connected to the assembly hole 24121 of the frame arm 2412, wherein the oil inlet 24141 is used to replenish lubricating oil to the assembly hole 24121 of the frame arm 2412, and the oil outlet 24142 is used to discharge the lubricating oil in the assembly hole 24121 of the frame arm 2412.

[0081] Furthermore, the pulley frame 241 includes two secondary pulley brackets 2415, and the two secondary pulley brackets 2415 are fixedly installed on the frame plate 2411 in a mutually spaced manner, one secondary pulley 243 is rotatably installed on one end of the two secondary pulley brackets 2415, and the other secondary pulley 243 is rotatably installed on the other end of the two secondary pulley brackets 2415, so that the two secondary pulleys 243 are rotatably set on the pulley frame 241.

[0082] Reference Figure 2 , Figures 5 to 6B , FIG. 11A to FIG. 12B The floating automatic lifting device 20 includes a top stabilizing assembly 25 and a bottom stabilizing assembly 26, wherein the top stabilizing assembly 25 is arranged on the hydraulic power assembly 23, and the bottom stabilizing assembly 26 is arranged below the buoyancy assembly 22. The top stabilizing assembly 25 cooperates with the two columns 21, and the bottom stabilizing assembly 26 cooperates with the two columns 21, so that the buoyancy assembly 22, the hydraulic power assembly 23, the pulley assembly 24, the top stabilizing assembly 25 and the bottom stabilizing assembly 26, which are combined into a whole, can only move up and down in the floating space 201 of the floating automatic lifting device 20. In other words, the top stabilizing assembly 25 and the bottom stabilizing assembly 26 are used to prevent the buoyancy assembly 22, the hydraulic power assembly 23, the pulley assembly 24, the top stabilizing assembly 25 and the bottom stabilizing assembly 26, which are combined into a whole, from shaking in the floating space 201 of the floating automatic lifting device 20.

[0083] Specifically, the top stabilizing assembly 25 includes two top stabilizing frames 251 and four top stabilizing wheels 252, each of the top stabilizing frames 251 is provided with a top stabilizing wheel 252 at opposite ends, and the hydraulic mechanism 231 is provided with a top stabilizing frame 251 at opposite ends, wherein the top stabilizing frame 251 is located in the limiting groove 214 of the column 21, and the two top stabilizing wheels 252 provided on the top stabilizing frame 251 are respectively rollably pressed against the two side plates 213 of the column 21. The specific manner in which the top stabilizing frame 251 is provided at the end of the hydraulic mechanism 231 can be welding or bolt assembly, and the port defense system of the present invention is not limited in this respect.

[0084] The bottom stabilizing assembly 26 includes a bottom stabilizing frame 261 and four bottom stabilizing wheels 262. A bottom stabilizing wheel 262 is respectively arranged at the four corners of the bottom stabilizing frame 261. The bottom stabilizing frame 261 is located below the buoyancy assembly 22, and the end of the bottom stabilizing frame 261 is located in the limiting groove 214 of the column 21. The two bottom stabilizing wheels 262 arranged at this end of the bottom stabilizing frame 261 are respectively rollably pressed against the two side plates 213 of the column 21.

[0085] Through the above-mentioned structure, the top stabilizing assembly 25 and the bottom stabilizing assembly 26 cooperate with the two columns 21 respectively, so that the buoyancy assembly 22, the hydraulic power assembly 23, the pulley assembly 24, the top stabilizing assembly 25 and the bottom stabilizing assembly 26 combined into a whole can only move up and down in the floating space 201 of the floating automatic lifting device 20.

[0086] Reference Figure 4A , Figure 4B , FIG. 11A to FIG. 12B The top stabilizing frame 251 of the top stabilizing assembly 25 has an axis stabilizing hole 2511, and the locking pin 232 of the hydraulic power assembly 23 is movably arranged in the axis stabilizing hole 2511 of the top stabilizing frame 251. In this way, on the one hand, when the hydraulic rod 2311 of the hydraulic mechanism 231 drives the locking pin 232 to retract and retract, the axis stabilizing hole 2511 of the top stabilizing frame 251 is used to limit the moving direction of the locking pin 232 to ensure that the locking pin 232 can be inserted into the locking hole 211 of the column 21. On the other hand, after the locking pin 232 is inserted into the locking hole 211 of the column 21, the top stabilizing frame 251 can improve the deformation resistance of the locking pin 232.

[0087] It can be understood that after the locking pin 232 of the hydraulic power assembly 23 is inserted into the locking hole 211 of the column 21 to put the floating automatic lifting device 20 in the locked state, if the tide rises and the sea level rises, the buoyancy provided by the buoyancy assembly 22 will cause the hydraulic power assembly 23 to have a tendency to move upward. Since the column 21 prevents the hydraulic power assembly 23 from moving upward through the locking pin 232, the locking pin 232 will have the risk of bending and deforming upward. Accordingly, if the tide falls and the sea level drops, the buoyancy assembly 22 and the locking hole 211 of the column 21 will cause the floating automatic lifting device 20 to be in the locked state. The gravity of the hydraulic power assembly 23, the pulley assembly 24, the top stabilizing assembly 25 and the bottom stabilizing assembly 26 will cause the hydraulic power assembly 23 to have a tendency to move downward. Since the column 21 prevents the hydraulic power assembly 23 from moving downward through the locking pin 232, the locking pin 232 will have the risk of bending and deforming downward. In the present invention, by movably setting the locking pin 232 in the stabilizing shaft hole 2511 of the top stabilizing frame 251, the deformation resistance of the locking pin 232 can be effectively improved and the deformation risk of the locking pin 232 can be reduced.

[0088] Reference Fig. 12A and Fig. 12B The hydraulic power assembly 23 includes a connecting mechanism 233, the inner end of the locking pin 233 is fixedly connected to the connecting mechanism 233, and the outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 is movably connected to the connecting mechanism 233, so that the inner end of the locking pin 232 is set at the outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 by the connecting mechanism 233. Since the connecting mechanism 233 and the outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 are movably connected, even if the locking pin 232 is slightly deformed, the connecting mechanism 233 will prevent the hydraulic rod 2311 of the hydraulic mechanism 231 from deforming, so as to effectively protect the hydraulic mechanism 231 and prevent the hydraulic mechanism 231 from being damaged due to leakage. That is, by connecting the inner end of the lock pin 232 and the outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 through the connecting mechanism 233, even if the lock pin 232 is deformed and causes the lock pin 232 and the hydraulic rod 2311 of the hydraulic mechanism 231 to be non-concentric, the connecting mechanism 233 can effectively protect the hydraulic mechanism 231. In addition, the connecting mechanism 233 can also eliminate the potential risks caused by the processing errors and assembly errors of the lock pin 232 and the hydraulic rod 2311 of the hydraulic mechanism 231 to the hydraulic rod 2311 of the hydraulic mechanism 231.

[0089] Specifically, the connecting mechanism 233 includes a first connecting member 2331 and a second connecting member 2332, and the connecting mechanism 233 has a ball socket 2333, a rod channel 2334, a slot 2335 and a pin channel 2336. The first connecting member 2331 and the second connecting member 2332 are installed with each other to form the ball socket 2333, the rod channel 2334, the slot 2335 and the pin channel 2336 between the first connecting member 2331 and the second connecting member 2332, and the rod channel 2334 is connected to the ball socket 2333 at one end of the connecting mechanism 233, and the pin channel 2336 is connected to the slot 2335 at the other end of the connecting mechanism 233. The outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 has a ball head 2310, a part of the hydraulic rod 2311 is located in the rod body channel 2334 of the connecting mechanism 233, and the diameter of the hydraulic rod 2311 is larger than the diameter of the rod body channel 2334 of the connecting mechanism 233, and the ball head 2310 is rotatably set in the ball socket 2333 of the connecting mechanism 233, so that the outer end of the hydraulic rod 2311 of the hydraulic mechanism 231 is movably connected to the connecting mechanism 233. The inner end of the locking pin 232 has a neck 2321 and a block 2322, and the size of the block 2322 is larger than the size of the neck 2321, wherein the block 2322 of the locking pin 232 is inserted into the slot 2335 of the connecting mechanism 233, and the neck 2321 of the locking pin 232 is located in the pin body channel 2336 of the connecting mechanism 233, so that the inner end of the locking pin 232 is fixedly connected to the connecting mechanism 233.

[0090] It is worth mentioning that the connection method of the first connecting member 2331 and the second connecting member 2332 is not limited in the present invention. Figures 1 to 12B In this specific example of the port defense system of the present invention shown, the first connector 2331 and the second connector 2332 can be locked by a set of screws.

[0091] Preferably, refer to the attached Figure 4A and Figure 4BThe connecting mechanism 233 further includes a pair of hemispherical gaskets 2337, which respectively wrap the ball head 2310 on opposite sides of the ball head 2310 of the hydraulic rod 2311 of the hydraulic mechanism 231 to isolate the ball head 2310 and the inner walls of the first connecting member 2331 and the second connecting member 2332 for forming the ball socket 2333, wherein the hemispherical gasket 2337 can be made of a material with good wear resistance, for example, a rubber material, so that the vibration generated by the collision between the outer end of the locking pin 232 and the column 211 can be absorbed by the hemispherical gasket 2337 to prevent the vibration from being transmitted to the hydraulic rod 2311 of the hydraulic mechanism 231, so as to improve the reliability of the hydraulic power assembly 23.

[0092] Reference FIG. 11A to FIG. 12B The top stabilizing assembly 25 includes at least one anti-collision block 253, which may be made of rubber. The anti-collision block 253 is arranged on the outside of the top stabilizing frame 251 and faces the main board 212 of the column 21. For example, the anti-collision block 253 is locked to the top stabilizing frame 251 by a screw. The anti-collision block 253 can prevent the connection position between the top stabilizing frame 251 and the top stabilizing wheel 252 from colliding with the main board 212 of the column 21, thereby ensuring that the top stabilizing wheel 252 can rotate relative to the top stabilizing frame 251. Preferably, the top stabilizing assembly 25 includes two anti-collision blocks 253, which are symmetrically arranged at opposite ends of the top stabilizing frame 251.

[0093] Reference Figure 2 , Figure 3 6 to 9, the floating automatic lifting device 20 further includes at least one counterweight block 27, the counterweight block 27 is arranged below the buoyancy component 22, and the bottom stabilizing component 26 is arranged below the counterweight block 27, wherein the counterweight block 27 is used to provide counterweight.

[0094] In order to combine the pulley assembly 24, the hydraulic power assembly 23, the buoyancy assembly 23, the counterweight block 27 and the bottom stabilizing assembly 26 into a whole, referring to Figures 6 to 9, the pulley assembly 24 has a plurality of first through-holes 246, the hydraulic power assembly 23 has a plurality of second through-holes 234, the buoyancy assembly 22 has a plurality of third through-holes 225, the counterweight block 27 has a plurality of fourth through-holes 271, the bottom stabilizing assembly 26 has a plurality of fifth through-holes 263, and the floating automatic lifting device 20 further includes a plurality of locking rod assemblies 28, each of which includes a rod body 281, a top nut 282 and a bottom nut 28 3. The rod body 281 passes through the first through hole 246 of the pulley assembly 24, the second through hole 234 of the hydraulic power assembly 23, the third through hole 225 of the buoyancy assembly 22, the fourth through hole 271 of the counterweight block 27 and the fifth through hole 263 of the bottom stabilization assembly 26. The top nut 282 is screwed on the top of the rod body 281, and the bottom nut 283 is screwed on the bottom of the rod body 281. In this way, the locking rod assembly 28 is used to lock the pulley assembly 24, the hydraulic power assembly 23, the buoyancy assembly 22, the counterweight block 27 and the bottom stabilization assembly 26 so that the above components are assembled into a whole.

[0095] Specifically, each of the first through holes 246 of the pulley assembly 24 is provided on the frame plate 2411 of the pulley frame 241, each of the second through holes 234 of the hydraulic power assembly 23 is provided on the hydraulic mechanism 231, each of the third through holes 225 of the buoyancy assembly 22 passes through the transverse partition 224 and the floating block 222, and each of the fifth through holes 263 of the bottom stabilization assembly 26 is provided on the bottom stabilization frame 261.

[0096] In order to prevent the top nut 282 and the bottom nut 283 from falling off from the top and bottom of the rod body 281 respectively, the top and bottom of the rod body 281 can be respectively provided with an insertion hole 2811, and the locking rod assembly 28 includes two stop pins 284, one of the stop pins 284 is inserted into the insertion hole 2811 at the top of the rod body 281 to prevent the top nut 282 from falling off from the top of the rod body 281, and the other stop pin 284 is inserted into the insertion hole 2811 at the bottom of the rod body 281 to prevent the bottom nut 283 from falling off from the bottom of the rod body 281.

[0097] Reference Figure 4A and Figure 4BThe floating automatic lifting device 20 further includes at least one metal proximity switch 29, wherein the metal proximity switch 29 is arranged on the lock pin 232 of the hydraulic power assembly 23, and the metal proximity switch 29 is connected to the control unit 60, and the control unit 60 controls the working state of the hydraulic mechanism 231 of the hydraulic power assembly 23 according to the detection data of the metal proximity switch 29.

[0098] Specifically, when the floating automatic lifting device 20 is in the adjustment state, the metal proximity switch 29 is used to detect whether the outer end of the locking pin 232 of the hydraulic power assembly 23 is aimed at the locking hole 211 of the column 21. When the metal proximity switch 29 detects that the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21, the control unit 60 controls the hydraulic rod 2311 of the hydraulic mechanism 231 to extend outward according to the detection data of the metal proximity switch 29, so as to push the locking pin 232 outward so that the outer end of the locking pin 232 can be inserted into the column. 21, so that the floating automatic lifting device 20 can switch from the adjusting state to the locking state. Accordingly, when the metal proximity switch 29 detects that the outer end of the locking pin 232 is not aimed at the locking hole 211 of the column 21, the control unit 60 controls the hydraulic rod 2311 of the hydraulic mechanism 231 to remain in the retracted position according to the detection data of the metal proximity switch 29. In this way, the port defense system can avoid the outer end of the locking pin 232 from colliding with the main board 212 of the column 21 to protect the hydraulic mechanism 231.

[0099] Preferably, the lock pin 232 has a lock pin through hole 2323 , and the metal proximity switch 29 is disposed in the lock pin through hole 2323 of the lock pin 232 , so that the metal proximity switch 29 can be prevented from being exposed and protected.

[0100] It can be understood that when the floating automatic lifting device 20 is in the adjustment state, affected by the fluctuations of the sea water, the buoyancy assembly 22, the hydraulic power assembly 23, the pulley assembly 24, the top stabilization assembly 25 and the bottom stabilization assembly 26, which are combined into a whole, are dynamic in the floating space 201 of the floating automatic lifting device 20, which causes the height position of the outer end of the locking pin 232 of the hydraulic power assembly 23 to change at any time. Therefore, in order to make the locking pin 232 of the hydraulic power assembly 23 smoothly inserted into the locking hole 211 of the column 21, on the one hand, the height dimension of the locking hole 211 of the column 21 is larger than that of the locking pin 232 of the hydraulic power assembly 23. The diameter size of the outer end of the locking pin 232, for example, the height size of the locking hole 211 of the column 21 can be much larger than the diameter size of the outer end of the locking pin 232. On the other hand, it is necessary to detect whether the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21 through the metal proximity switch 29. Only when the metal proximity switch 29 detects that the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21, the control unit 60 controls the hydraulic rod 2311 of the hydraulic mechanism 231 to extend outward, so as to drive the locking pin 232 to extend outward so that the outer end of the locking pin 232 is inserted into the locking hole 211 of the column 21.

[0101] It is worth mentioning that, in the process that the hydraulic rod 2311 of the hydraulic mechanism 231 extends outward and drives the locking pin 232 to extend outward, the metal proximity switch 29 continuously detects whether the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21. Once the outer end of the locking pin 232 deviates from the locking hole 211 of the column 21, the control unit 60 immediately controls the hydraulic mechanism 231 to stop working or retract the hydraulic rod 2311 inward to avoid the outer end of the locking pin 232 hitting the main board 212 of the column 21, so as to achieve the purpose of protecting the hydraulic mechanism 231.

[0102] In the port defense system of the present invention, when the control unit 60 controls the winch 10 on the left bank to release the cable and controls the winch 10 on the right bank to reel in the cable so that the net body 30 is deployed, the net body 30 is suspended in the access channel of the port 1000 and closes the access channel of the port 1000. At this time, the port defense system of the present invention allows the floating automatic lifting device 20 to switch between the adjustment state and the locking state so that the height of the net body 30 is adaptive to the height of the sea surface 3000. When the control unit 60 controls the winch 10 on the left bank to reel in the cable and controls the winch 10 on the right bank to release the cable so that the net body 30 is retracted into the receiving groove 2001 of the concrete foundation 2000 on the left bank, the control unit 60 controls the locking pin 232 of the hydraulic power assembly 23 to withdraw from the locking hole 211 of the column 21 so that the floating automatic lifting device 20 is in the adjustment state, and the floating automatic lifting device 20 can float freely. It is worth mentioning that, in order to ensure the safety of the port defense system, the floating automatic lifting device 20 is in the adjustment state no matter when the net body 30 is being unfolded or when the net body 30 is being retracted.

[0103] When the sea surface distance detection sensor 70 detects that the height of the sea surface 3000 has dropped and the height difference is greater than the designed threshold value, according to the detection data of the sea surface distance detection sensor 70, firstly, the control unit 60 controls the winch 10 to enter a state of releasing the cable according to the set length from the brake stop, and secondly, the control unit 60 controls the hydraulic motor / pump 2313 and the electromagnetic control valve 2314 of the hydraulic mechanism 231 to work, so that the hydraulic rod 2311 contracts inwardly and the outer end of the locking pin 232 is pulled out of the locking hole 211 of the column 21, that is, the outer end of the locking pin 232 withdraws from the locking hole 211 of the column 21, and then waits for a period of time to allow the hydraulic rod 2311 to retract inwardly and the outer end of the locking pin 232 to retract out of the locking hole 211 of the column 21. The buoyancy assembly 22, the hydraulic power assembly 23, the pulley assembly 24, the top stabilization assembly 25 and the bottom stabilization assembly 26, which are combined as a whole, are lowered in the floating space 201 of the floating automatic lifting device 20 to the height of the net body 30 to adapt to the height of the sea surface 3000. Then, the control unit 60 controls the hydraulic motor / pump 2313 and the electromagnetic control valve 2314 of the hydraulic mechanism 231 to work so that the hydraulic rod 2311 extends outward and pushes the locking pin 232 outward so that the outer end of the locking pin 232 is inserted into the locking hole 211 of the column 21 again. Finally, the control unit 60 controls the brake of the winch 10. In the process of the hydraulic rod 2311 of the hydraulic mechanism 231 pushing the locking pin 232 outward, the metal proximity switch 29 detects whether the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21. Only when the metal proximity switch 29 detects that the outer end of the locking pin 232 is aimed at the locking hole 211 of the column 21, the control unit 60 controls the hydraulic rod 2311 of the hydraulic mechanism 231 to extend outward, so as to drive the locking pin 232 to extend outward and insert the outer end of the locking pin 232 into the locking hole 211 of the column 21.

[0104] When the sea surface distance detection sensor 70 detects that the height of the sea surface 3000 has risen and the height difference is greater than the designed threshold value, according to the detection data of the sea surface distance detection sensor 70, first, the control unit 60 controls the hydraulic motor / pump 2313 and the electromagnetic control valve 2314 of the hydraulic mechanism 231 to work, so that the hydraulic rod 2311 contracts inwardly and the outer end of the locking pin 232 is pulled out of the locking hole 211 of the column 21, that is, the outer end of the locking pin 232 withdraws from the locking hole 211 of the column 21, and secondly, waits for a period of time to allow the buoyancy component 22, the hydraulic power component 23, and the sliding component 234, which are combined into a whole, to be released. The wheel assembly 24, the top stabilizing assembly 25 and the bottom stabilizing assembly 26 rise in the floating space 201 of the floating automatic lifting device 20 to the height of the net body 30 which adapts to the height of the sea surface 3000. Again, the control unit 60 controls the hydraulic motor / pump 2313 and the electromagnetic control valve 2316 of the hydraulic mechanism 231 to work so that the hydraulic rod 2311 extends outward and pushes the locking pin 232 outward so that the outer end of the locking pin 232 is inserted into the locking hole 211 of the column 21 again. Then, the control unit 60 controls the winch 10 to enter a state of cable reeling according to a set length from the brake, and brakes after the cable reeling is completed.

[0105] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A port defense system with self-adaptive mesh height adjustment, characterized in that: include: Net body; Main cable; two winches; Sea surface distance detection sensor; Two floating automatic lifting devices, wherein one of the floating automatic lifting devices and the winch are disposed adjacently on the left side of the port, and the floating automatic lifting device can be disposed in a receiving groove of a concrete foundation on the left side of the port, and the other floating automatic lifting device and the other winch are disposed adjacently on the right bank of the port, and the floating automatic lifting device is located inside the winch, wherein the floating automatic lifting device has an adjustment state and a locking state, and the floating automatic lifting device can switch between the adjustment state and the locking state, wherein the opposite ends of the main cable are operably connected to the two winches after passing around the two floating automatic lifting devices respectively, wherein the sea surface distance detection sensor is disposed in the receiving groove of the concrete foundation on the left side of the port, and adjacent to the floating automatic lifting device located in the receiving groove of the concrete foundation; A plurality of buoys, wherein the buoys are sequentially connected and arranged on the top of the net body, the leftmost one of the buoys is constructed to remain stationary relative to one of the floating automatic lifting devices, the rightmost other one is fixedly connected to the main cable at a position adjacent to another floating automatic lifting device, and the remaining buoys are movably connected to the main cable so that the net body is operably held between two floating automatic lifting devices, wherein adjacent buoys are connected by flexible pull ropes; as well as A control unit, wherein the sea surface distance detection sensor and the two floating automatic lifting devices are respectively connected to the control unit, and the control unit controls the floating automatic lifting device to switch between the adjustment state and the locking state according to the detection data of the sea surface distance detection sensor.

2. The port defense system with adaptively adjustable net height according to claim 1 is characterized in that: The floating automatic lifting device comprises a buoyancy assembly, a hydraulic power assembly, a pulley assembly and two columns, wherein the hydraulic power assembly is arranged above the buoyancy assembly, and the two opposite sides of the hydraulic power assembly are respectively provided with a retractable locking pin, wherein the pulley assembly is arranged above the hydraulic power assembly, and the pulley assembly comprises a pulley frame and a main pulley rotatably arranged on the pulley frame, wherein the two columns are arranged at intervals from each other to form a floating space, an outer opening and an inner opening of the floating automatic lifting device between the two columns, and the two columns are divided into The floating automatic lifting device has a row of locking holes distributed along the height direction, wherein the locking holes are connected to the floating space, wherein the buoyancy assembly, the hydraulic power assembly and the pulley assembly are movably arranged in the floating space, and one end of the main cable enters the floating space after passing through the inner opening, and extends out through the outer opening after bypassing the main pulley in the floating space, wherein the control unit controls the extension and retraction state of the locking pin of the hydraulic power assembly according to the detection data of the sea surface distance detection sensor, so that the floating automatic lifting device switches between the adjustment state and the locking state.

3. The port defense system with self-adaptive mesh height adjustment according to claim 2, characterized in that: The column includes a main board and two side boards, and the two side boards extend outward from opposite sides of the main board respectively to form a limiting groove between the main board and the two side boards, wherein the floating automatic lifting device includes a top stabilizing assembly and a bottom stabilizing assembly, the top stabilizing assembly includes two top stabilizing frames and four top stabilizing wheels, and each of the top stabilizing frames is provided with a top stabilizing wheel at opposite ends, and the hydraulic power assembly is provided with a top stabilizing frame at opposite ends, the top stabilizing frame is located in the limiting groove of the column, and the two top stabilizing wheels provided on the top stabilizing frame are respectively rollably pressed against the two side boards of the column, the bottom stabilizing assembly includes a bottom stabilizing frame and four bottom stabilizing wheels, and the four corners of the bottom stabilizing frame are respectively provided with a bottom stabilizing wheel, the bottom stabilizing frame is located below the buoyancy assembly, and the end of the bottom stabilizing frame is located in the limiting groove of the column, and the two bottom stabilizing wheels provided at this end of the bottom stabilizing frame are respectively rollably pressed against the two side boards of the column.

4. The port defense system with adaptively adjustable net height according to claim 3 is characterized in that: The top stabilizing frame has an axis stabilizing hole, and the locking pin of the hydraulic power assembly is movably arranged in the axis stabilizing hole of the top stabilizing frame.

5. The port defense system with self-adaptive mesh height adjustment according to claim 4, characterized in that: The top stabilizing assembly includes an anti-collision block, which is arranged on the outer side of the top stabilizing frame and faces the main board of the column.

6. The port defense system with self-adaptive mesh height adjustment according to claim 3, characterized in that: The floating automatic lifting device comprises a counterweight block, which is arranged below the buoyancy component, and the bottom stabilizing component is arranged below the counterweight block.

7. The port defense system with self-adaptive mesh height adjustment according to claim 6, characterized in that: The floating automatic lifting device includes a plurality of locking rod assemblies, each of which includes a rod body, a top nut and a bottom nut. The pulley assembly has a plurality of first through-holes, the hydraulic power assembly has a plurality of second through-holes, the buoyancy assembly has a plurality of third through-holes, the counterweight block has a plurality of fourth through-holes, and the bottom stabilization assembly has a plurality of fifth through-holes. After the top of the rod body passes through the fifth through-hole of the bottom stabilization assembly, the fourth through-hole of the counterweight block, the third through-hole of the buoyancy assembly, the second through-hole of the hydraulic power assembly and the first through-hole of the pulley assembly in sequence, the top nut is screwed onto the top of the rod body and the bottom nut is screwed onto the bottom of the rod body, so that the pulley assembly, the hydraulic power assembly, the buoyancy assembly, the counterweight block and the bottom stabilization assembly are assembled into a whole by the locking rod assembly.

8. The port defense system with self-adaptive mesh height adjustment according to claim 7, characterized in that: The top and bottom of the rod body are respectively provided with insertion holes, and the locking rod assembly includes two stop pins, one of the stop pins is inserted into the insertion hole at the top of the rod body to prevent the top nut from falling off from the top of the rod body, and the other stop pin is inserted into the insertion hole at the bottom of the rod body to prevent the bottom nut from falling off from the bottom of the rod body.

9. A method for adaptively adjusting the height of a mesh body, characterized in that: Using the port defense system with adaptively adjustable net height as claimed in claim 1, the adjustment method is used to realize automatic adjustment of the height of the net as the sea level changes, wherein the adjustment method comprises the following steps: Acquiring detection data through the sea surface distance detection sensor, wherein the detection data is the height of the sea surface; The control unit determines whether the height of the mesh needs to be adjusted according to the detection data; When the control unit confirms that the height of the net body needs to be adjusted, the control unit controls the floating automatic lifting device to switch from the locked state to the adjusted state. At this time, the height of the net body is adjusted based on buoyancy to adapt to the sea surface height. After the height of the net body is adjusted, the control unit controls the floating automatic lifting device to switch from the adjusted state to the locked state; when the control unit confirms that the height of the net body does not need to be adjusted, the control unit controls the floating automatic lifting device to remain in the locked state.

10. The method for adjusting the height of a net body adaptively according to claim 9, characterized in that: When the control unit controls the floating automatic lifting device to switch from the adjusting state to the locking state, first, it is confirmed whether the locking pin of the hydraulic power assembly of the floating automatic lifting device is aligned with the locking hole of the column in the horizontal direction, and secondly, when the locking pin of the hydraulic power assembly is aligned with the locking hole of the column in the horizontal direction, the locking pin of the hydraulic power assembly is allowed to be inserted into the locking hole of the column, so that the floating automatic lifting device is switched to the locking state.

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