CN101746680B

CN101746680B - Device for rapidly collecting and releasing boats

Info

Publication number: CN101746680B
Application number: CN2010101118394A
Authority: CN
Inventors: 索成将
Original assignee: SHEYANG YUANYANG SHIPPING AUXILIARY MACHINE CO Ltd
Current assignee: SHEYANG YUANYANG SHIPPING AUXILIARY MACHINE CO Ltd
Priority date: 2010-02-05
Filing date: 2010-02-05
Publication date: 2012-05-30
Anticipated expiration: 2030-02-05
Also published as: CN101746680A

Abstract

The invention relates to a device for rapidly collecting and releasing boats, which comprises a collecting and releasing arm structure, an aligning device, a decoupler, a sling and a winch, wherein one end of the collecting and releasing arm structure is connected with a mother ship and the other end of the collecting and releasing arm structure can be extended or retracted in a suspending way to provide a force applying fulcrum for collecting and releasing the boats; the aligning device is connected at the other end of the collecting and releasing arm structure and is used to align with the lifting and the lowering positions of the boats on sea surface; the decoupler is limited on the aligning device and is used to be connected with the boats; one end of the sling penetrates through a pulley fixed on the collecting and releasing arm structure in a winding way, is connected with the decoupler and is used to transmit pulling force to the decoupler; and the winch is connected with the other end of the sling to provide pulling force for collecting and releasing the boats. The device is a collecting and releasing device with complete functions and can be used to stably and rapidly lower down the boats to sea surface from the mother ship under force-seven wind sea conditions or to collect the boats back to the mother ship from sea surface.

Description

Rapid boat folding and unfolding device

Technical Field

The invention relates to a boat retracting device, in particular to a boat retracting device used for offshore hoisting operation.

Background

The marine lifting operation, namely the small boat is lowered to the sea surface from a naval boat (or other mother ships) by using a retraction mechanism, or the small boat on the sea surface is retracted to the mother ships, because the operation is required under the random disturbance of sea waves, the adopted retraction mechanism has complex stress condition and large stress force, and also needs to consider the space occupation condition, so the design difficulty is high. Specifically, the following cases are issues that must be considered in the design of the radio and cassette mechanism:

1. the retraction arm must be able to simply and stably complete the lowering and retraction of the boat without interfering with other components of the mother vessel.

2. Because the mounting position of the retraction device is usually higher, the rolling of the mother ship can cause the small boat to swing under the condition of heavy waves, and the pendulum effect is caused. In addition, in the folding and unfolding process, the wind direction has great influence on the folding and unfolding process, and the boat can also swing. In the process of folding and unfolding the boat, if the swinging motion cannot be reduced, the normal service life of the sling can be reduced, and sometimes even accidents that the boat collides with a mother ship or the sling is broken can occur.

3. In the process of folding and unfolding the small boat, the external disturbance can cause the vibration of the suspended boat, the tension fluctuation can be generated in the sling, if the tension fluctuation cannot be reduced, the sling is broken or the winch is damaged, and the folding and unfolding process can not be finished.

4. When the boat is placed on the water surface and still keeps the state of the hook, the boat flows gradually along with the waves in the sea, and if the steel cable cannot be kept in a tensioned state all the time, the large-amplitude swinging (particularly the heaving) of the boat brings great difficulty and danger coefficient for normal retraction and release operation.

For the reasons, the existing retraction device can only work under low sea conditions, and the maneuvering capability and the supply capability of the small boat are greatly influenced.

Therefore, the application aims at the situation and provides the device for rapidly retracting and releasing the small boat, so that the small boat can work under the 6-level sea condition to meet the current requirement on the offshore hoisting operation.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to: the utility model provides a quick receiving and releasing device of small boat can accomplish the marine operation of lifting by crane fast and stably.

In order to achieve the purpose, the invention adopts the technical scheme that:

a quick boat retraction device for lowering a boat from a mother ship to the sea or retrieving the boat from the sea to the mother ship, comprising:

one end of the retraction arm structure is connected with the mother ship, and the other end of the retraction arm structure can be suspended or retracted so as to provide a force application fulcrum for retracting the boat;

the aligning device is connected to the other end of the retractable arm structure and is used for aligning the rising and falling positions of the boat on the sea surface; the aligning device comprises a transverse swinging device and a longitudinal swinging device, wherein the transverse swinging device is pivoted to the retracting arm structure and transversely swings relative to the retracting arm structure, and the longitudinal swinging device is pivoted to the transverse swinging device and longitudinally swings relative to the transverse swinging device;

the unhooking device is limited on the aligning device and is used for connecting the small boat;

one end of the sling is wound with a pulley which penetrates through the retractable arm structure and is fixed, and the sling is connected with the unhook and is used for transmitting pulling force to the unhook;

the damping buffer device is arranged between the pulley and the retractable arm structure and comprises an L-shaped plate and a hydraulic cylinder, the inflection point of the L-shaped plate is pivoted on the retractable arm structure, one end of the L-shaped plate is pivoted with the pulley, the other end of the L-shaped plate is pivoted with one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is pivoted on the retractable arm structure;

and the winch is connected with the other end of the sling to provide tension for collecting and releasing the boat.

In a preferred technical scheme, the retractable arm structure is a concealed high-speed boat retractable arm structure, and comprises: one end of the arm support is pivoted on the mother ship, and the other end of the arm support is an overhanging end; one end of the amplitude-variable oil cylinder is pivoted on the mother ship, and the other end of the amplitude-variable oil cylinder is pivoted with the arm support; and the cantilever end of the arm support is bent into a concave shape, and the concave cantilever end is provided with an opening facing the outer side of the ship board of the mother ship.

In a preferred technical scheme, the arm support comprises: a first section pivoted on the mother vessel, a second section horizontally placed in a retracted state, a third section obliquely crossing the second section, a fourth section vertically placed in a retracted state, and a fifth section obliquely crossing the fourth section, the aligning device being connected to an end of the fifth section of the boom.

In a preferred technical scheme, the retractable arm structure is an open type high-speed boat retractable arm, and comprises:

the slewing mechanism consists of a base, a slewing bearing, a slewing tower body and a driving mechanism, wherein the base is fixed on a deck of a mother ship, the slewing tower body is pivoted with the base through the slewing bearing, and the driving mechanism drives the slewing tower body to rotate around the base;

the arm support comprises a fixed arm pivoted on the rotary tower body, a sliding arm which is arranged on the fixed arm in a sliding way and can perform linear displacement relative to the length direction of the fixed arm, and a telescopic oil cylinder of which two ends are respectively connected with the fixed arm and the sliding arm;

and two ends of the amplitude-variable oil cylinder are respectively connected to the rotary tower body and the fixed arm so as to drive the fixed arm to lift up or fall down.

In a preferred technical scheme, the driving mechanism is a hydraulic driving motor fixed on the rotary tower body, an external gear is connected to an output shaft of the hydraulic driving motor, an internal gear is fixedly arranged on the base, and the internal gear and the external gear are meshed with each other.

In a better technical scheme, a first cylinder body of a first damping oil cylinder is rotatably connected to the retractable arm structure, a piston rod of the first damping oil cylinder is pivoted on the transverse swinging device, at least one first damping spring is arranged between the piston rod of the first damping oil cylinder and the cylinder body of the first damping oil cylinder, a piston arranged in the first cylinder body divides the first cylinder body into two hydraulic cavities, and the two hydraulic cavities of the first cylinder body are communicated with each other through a first overflow valve;

the second cylinder body of a second damping oil cylinder is rotatably connected to the transverse swinging device, a piston rod of the second damping oil cylinder is pivoted on the longitudinal swinging device, at least one second damping spring is arranged between the piston rod of the second damping oil cylinder and the cylinder body of the second damping oil cylinder, the second cylinder body is divided into two hydraulic cavities by a piston arranged in the second cylinder body, and the two hydraulic cavities of the second cylinder body are mutually communicated through a second overflow valve.

In a preferred technical scheme, the longitudinal swing device of the alignment device is a hollow structure, and the unhooking device is penetrated and limited in the hollow structure of the longitudinal swing device and can move in the longitudinal swing device in a telescopic way; the sling passes through the inner part of the longitudinal swinging device and is connected with the unhook.

In a preferred technical scheme, a hanging cone is welded and connected to the lower end of the longitudinal swinging device of the aligning device, the hanging cone is provided with a downward-expanding bell mouth, and the bell mouth is communicated with the interior of the longitudinal swinging device and can be used for the unhooking to pass through.

In a preferred embodiment, the unhooking device is a quick unhooking device, comprising:

the hook comprises a hook seat and a hook body which are pivoted with each other, wherein one end of the hook body is provided with a coupler knuckle, and the other end of the hook body is provided with a stop block;

the spanner is pivoted with the hook seat through a rotating shaft, the rotating shaft is fixedly connected with the spanner and synchronously rotates, an avoiding groove is formed in the position, corresponding to the stop block, of the rotating shaft, when the spanner is in a pushing-up position, the cylindrical outer surface of the rotating shaft abuts against the stop block of the hook body, and when the spanner is in a falling position, the avoiding groove of the rotating shaft can be used for the stop block of the hook body to pass through; the spanner is also provided with a flange;

the control switch comprises a fixed sleeve, a sliding shaft, a return spring and an operating handle, wherein one end of the fixed sleeve is a pipe body which is arranged on the hook seat in a penetrating way, the other end of the fixed sleeve is a shoulder part which is fixed on the hook seat, and the shoulder part is provided with a central hole; the sliding shaft comprises an interference section, a middle section and a control section, the diameters of the interference section, the middle section and the control section are sequentially reduced, the control section of the sliding shaft penetrates into a center hole of the shoulder part from the inside of the pipe body of the fixed sleeve, the interference section of the sliding shaft can stretch and move in the pipe body, the middle section of the sliding shaft is sleeved with the reset spring in a penetrating mode, two ends of the reset spring respectively abut against the shoulder part of the fixed sleeve and the interference section of the sliding shaft, the interference section of the sliding shaft extends outwards in a normal state to block a blocking edge of the wrench, the wrench is kept at an upward pushing position, the control section of the sliding shaft penetrates out of the center hole of the shoulder part of the fixed sleeve and then is connected with the operating handle, and the stretching state of the interference section of the sliding shaft is controlled through the operating handle.

In a preferred technical scheme, the hook seat is formed by fixedly connecting two seat plates which are parallel to each other.

In a preferred technical scheme, the hook body is pivoted between the two seat plates of the hook seat through a pin shaft.

In a preferred technical scheme, the operating handle and the control section of the sliding shaft are mutually pivoted through a pin, the operating handle is provided with a cam surface which is contacted with the shoulder part of the fixed sleeve or the hook seat, and the distance between the cam surface and the pin is gradually increased or decreased.

In a better technical scheme, the wrench also comprises a protection spring, the protection spring is wound on the fixed sleeve, one end of the protection spring is fixed, and the other end of the protection spring is abutted against the coupler knuckle of the hook body, so that the unhooking stop block is kept in close contact with the baffle plate of the wrench.

In a preferred embodiment, the rotating shaft is located below the center of mass of the wrench.

In a preferred technical scheme, the hook seat, the hook body, the wrench and the control switch are all made of stainless steel.

In a preferred embodiment, the end of the L-shaped plate pivotally connected to the pulley is a long side, and the end of the L-shaped plate pivotally connected to the hydraulic cylinder is a short side.

In a preferred embodiment, the winch comprises:

the hydraulic motor drives the winding drum to rotate through the reduction gearbox;

the clutch device is arranged on the secondary shaft, one side of the clutch device is provided with a first gear which is meshed with the hydraulic motor, the first gear is provided with a female friction plate, the secondary shaft is provided with a sub friction plate which is opposite to the female friction plate, one side of the sub friction plate is provided with a clutch piston sleeve, and one side of the piston sleeve is propped against a belleville spring;

the braking speed limiting device is arranged on the third-stage shaft, and the third-stage shaft is meshed with the second-stage shaft through a gear.

In a preferred technical scheme, the braking speed limiting device comprises a heavy hammer, wherein the heavy hammer is connected with a heavy hammer sleeve, the heavy hammer sleeve is connected with a cam body, the cam body is connected with a braking ring, a braking belt is arranged below the braking ring, and the lower side of the braking belt is in close contact with a brake disc.

In a better technical scheme, the braking speed limiting device also comprises a speed limiting block, and the speed limiting block is sleeved on a convex shaft arranged on the brake disc.

In a better technical scheme, the winch further comprises a manual device, the manual device is arranged on the third-level shaft and comprises a crank and a ratchet wheel, and a pawl matched with the ratchet wheel is arranged on the braking speed limiting device.

In a preferred embodiment, a roller device for pressing the rope is provided next to the drum.

In a preferred embodiment, the hydraulic control system connected to the winch comprises:

an oil pump which is driven by the motor to rotate and sucks oil from the oil tank;

the main control electromagnetic valve is a two-position four-way valve for lifting, descending or constant tension control of the boat;

the oil pump is respectively communicated with a P port of the main control electromagnetic valve and a pressure reducing valve through a third one-way valve;

the port B of the main control electromagnetic valve is communicated with a fourth electromagnetic valve through a first one-way valve, the fourth electromagnetic valve is communicated with an oil inlet at one side of a hydraulic motor of the winch, and the first electromagnetic valve is communicated with an oil inlet at the other side of the hydraulic motor;

one side of the first load relief valve is communicated with an oil outlet of the first one-way valve, and the other side of the first load relief valve returns to the oil tank through an oil drainage pipe; one side of the second load relief valve is communicated with the oil inlet of the first one-way valve, and the other side of the second load relief valve returns to the oil tank through the oil drainage pipe.

In a better technical scheme, an oil path communicated with an opening A of the main control electromagnetic valve is respectively communicated with an oil path A1 or an oil path B1 through a first valve body group; the A1 oil path is communicated with a second electromagnetic valve which passes through a balance valve and is finally communicated with an oil inlet at one side of the hydraulic motor; the B1 oil path is communicated with a third electromagnetic valve, and the third electromagnetic valve is communicated with an oil inlet on the other side of the hydraulic motor.

In a preferred embodiment, the pressure reducing valve is further connected to a pilot operated directional valve, which is connected to the clutch device in the winch via a one-way throttle valve.

In a better technical scheme, a high-pressure ball valve is communicated with oil inlets at two sides of the hydraulic motor.

In a preferred embodiment, the hydraulic control system further comprises a second shuttle valve and a third shuttle valve; an oil inlet at one side of the second shuttle valve is communicated with an oil path connected between the second electromagnetic valve and the balance valve, and an oil inlet at the other side of the second shuttle valve is communicated with an oil path connected between the third electromagnetic valve and the hydraulic motor; an oil inlet at one side of the third shuttle valve is communicated with an oil outlet of the second shuttle valve, and an oil inlet at the other side of the third shuttle valve is communicated with an oil inlet of the first one-way valve.

In a better technical scheme, the hydraulic control system also comprises a manual pump, the manual pump is communicated with the oil tank through a ball valve, and an oil outlet of the manual pump is communicated with the P port of the main control electromagnetic valve and the pressure reducing valve through a second one-way valve respectively.

In a better technical scheme, the hydraulic control system further comprises a plurality of bolt oil cylinders and a plurality of proximity switches, and the bolt oil cylinders are communicated with the second valve body group.

In a better technical scheme, the hydraulic control system also comprises a variable amplitude oil cylinder and a bidirectional balance valve, wherein the variable amplitude oil cylinder is communicated with the bidirectional balance valve, and the bidirectional balance valve is communicated with a manual reversing valve 2 through a manual reversing valve 1; one oil port of the manual reversing valve 2 is communicated with the B3 oil path of the third valve body group, and the other oil port of the manual reversing valve is communicated with the energy accumulator through a one-way throttle valve.

In a better technical scheme, the hydraulic control system further comprises a damping oil cylinder, two swing reducing oil cylinders and two throttle valves, wherein the two swing reducing oil cylinders are perpendicular to each other, and the two swing reducing oil cylinders are respectively communicated with the two throttle valves.

In a preferred embodiment, the system further comprises at least two intelligent bracket devices, each intelligent bracket device comprising:

a fixing plate fixed on the mother ship;

the two bracket plates are symmetrically pivoted on the left side and the right side of the fixed plate, and a rubber block is fixed on the extending end of each bracket plate upwards;

and the two telescopic oil cylinders are respectively connected between the fixed plate and the two support plates and control the two support plates to rise and fall simultaneously.

In a better technical scheme, a supporting block is fixed on the overhanging end of each support plate upwards, and the rubber block is fixed on the upper surface of the supporting block.

Compared with the prior art, the invention adopting the technical scheme has the advantages that:

1. the overhanging end of the built-in retractable arm adopts a bending design, and the space of the naval vessel is saved to the maximum extent on the premise of meeting the mechanical property. The open type retractable arm can turn the arm support to the direction towards the inner side of the ship board by using the swing mechanism, and severe shaking caused by gravity center transfer can be avoided.

2. The passive pendulum reducing mechanism can reduce the swings in two vertical directions, and avoids the pendulum effect of the boat.

3. The damping and buffering device can reduce the tension fluctuation generated in the sling, and avoid the breakage of the sling due to the too fast tension change.

4. The quick unhooking mechanism can ensure the safety of hooking when hooking, and is simple and reliable to operate when needing to be released.

5. The winch can brake flexibly and switch between manual power and hydraulic power flexibly.

6. The hydraulic control system can ensure that the steel cable is always in a tensioning state, reduce the shake of the small boat and ensure the safety, and simultaneously prepare for lifting the small boat at any time; after the boat is folded, the hydraulic lock is locked to fix the boat on the suspension arm, so that accidents are avoided; the small boat can be switched to a constant tension control mode at the moment of contacting the sea surface, and the situation that the small boat moves along with the sea surface to cause out-of-control retraction and release is avoided.

7. The intelligent bracket device can quickly and stably fix the small boat on the mother ship or disconnect the small boat from the mother ship, so that the working efficiency of the retraction jack is improved.

Drawings

Fig. 1 and 2 are schematic structural views of the built-in retractable arm of the invention in two states of deployment and retraction, respectively;

FIG. 3 is a schematic view of the hidden retractable arm of the present invention from another perspective in a retracted state;

FIG. 4 is a schematic structural diagram of a passive sway mitigation mechanism of the present invention;

FIG. 5 is a schematic structural view of the lateral sway mitigation mechanism of the present invention;

FIG. 6 is a schematic structural view of the longitudinal sway mitigation mechanism of the present invention;

FIG. 7 is a schematic view of the overall structure of the unhook showing the quick unhook device in a fastened state;

fig. 8 is a schematic view of the overall structure of the unhooking device, showing the quick unhooking device in a released state;

FIG. 9 is a sectional view taken along line A-A of FIG. 7;

FIG. 10 is a sectional view taken along line B-B of FIG. 7;

fig. 11A, 11B, and 11C are a front view, a side view, and a top view of the rotating shaft, respectively.

FIG. 12 is a schematic view of the shock absorbing and cushioning apparatus of the present invention;

FIG. 13 is an elevation view of the drawworks of the present invention;

FIG. 14 is a cross-sectional view taken along line A-A of the drawworks of the present invention;

FIG. 15 is a cross-sectional view of the brake speed limiter;

FIGS. 16, 16A, 16B are schematic and partially enlarged views of the hydraulic control system of the present invention;

FIGS. 17 and 17A illustrate a further preferred embodiment of the hydraulic control system of the present invention;

FIGS. 18 and 18A illustrate a further preferred embodiment of the hydraulic control system of the present invention;

FIG. 19 is a schematic view of the smart carrier assembly in a boat-out position;

FIG. 20 is a schematic structural view of the intelligent carrier apparatus in a boat stowed position;

FIG. 21 is a schematic view of the overall structure of a mother ship employing an intelligent cradle device for storing boats;

FIG. 22 is a schematic view of the telescoping action of the arm support in the extended position of the open retractable arm;

FIG. 23 is a schematic view of an open type retracting arm lifting the arm support by using a luffing mechanism;

fig. 24 is a schematic view of the swing mechanism of the open type retracting arm.

Detailed Description

The invention provides a device for rapidly retracting and releasing a boat, which comprises:

the aligning device is connected to the other end of the retractable arm structure and is used for aligning the rising and falling positions of the boat on the sea surface;

The above components can be combined into a fully functional stowing and releasing device sufficient to lower the boat from or retrieve the boat from the mother vessel to the sea, the specific structure of which will be described in detail below with reference to two preferred embodiments.

< example 1 (built-in type) >

As shown in fig. 1 and fig. 2, the present invention provides a structure schematic diagram of a built-in fast boat folding and unfolding device in two states of unfolding and folding, and the specific structure will be described below:

(one) receive and release arm structure: the variable-amplitude oil cylinder 22 is pivoted on a mother ship (not shown) at one end, and is pivoted on the mother ship at the other end, and the variable-amplitude oil cylinder 22 is pivoted on the mother ship at one end and is pivoted with the arm support 21 at the other end for controlling the expansion and retraction of the arm support 21; wherein: the cantilevered end of the boom 21 is bent into a concave shape, and the concave cantilevered end 21 has an opening 210 facing the outboard side 23 of the mother vessel.

When the luffing cylinder 22 extends, as shown in fig. 1, the arm support 21 is unfolded, and the overhanging end of the arm support 21 extends out of the ship board 23, so as to facilitate the launching of a small boat 24 to the sea surface or the retraction of the small boat 24 on the sea surface; when the luffing cylinder 22 is shortened, as shown in fig. 2, the arm support 21 retracts, the overhanging end of the arm support 21 retracts into the ship board, and the boat 24 enters from the opening 210 and is stored in the concave overhanging end of the arm support 21, so that the space of the mother ship is saved.

In this embodiment, the arm support 21 includes: a first segment 211 pivoted on the mother vessel, a second segment 212 lying horizontally in the retracted state, a third segment 213 diagonal to the second segment 213, a fourth segment 214 lying vertically in the retracted state, and a fifth segment 215 diagonal to the fourth segment 214. Of course, the number of the segments constituting the arm support 21 may also be increased or decreased appropriately, and the angle between the segments may also be adjusted appropriately, as long as a space enough to accommodate the boat can be formed at the overhanging end, and the embodiments formed by increasing or decreasing the number and adjusting the angle are all easily conceivable by those skilled in the art from the above embodiments, and since there are many variations, they are difficult to be listed one by one, and are not described herein again.

Referring to fig. 2, in the embodiment, a fixing frame 25 is further disposed on one side of the arm support 21, when the arm support 21 is in the retracted state, the fourth section 214 abuts against the fixing frame 25, and a fixing device 2141 is further disposed on the fourth section 214, and is used for fixing the fourth section 214 of the arm support 21 in the retracted state on the fixing frame 25, so as to prevent the arm support 21 from being accidentally unfolded; a ladder 252 is arranged on one side of the fixed frame 25, so that a person can climb on the fixed frame 25 and then enter the small boat 24; at the same time, it is also possible to let the personnel on the boat 24 down the ladder 252 onto the deck of the mother vessel.

(II) an alignment device: as shown in fig. 1, the aligning device 71 is connected to the fifth section 215 of the arm support 21, and includes a transverse swing device 711 and a longitudinal swing device 712.

As shown in fig. 4 and 5, the transverse swinging device 711 is pivoted to the fifth segment 215 by a pin 713, and can swing transversely (i.e., swing left and right as viewed in fig. 4 and 5) with respect to the fifth segment 215; as shown in fig. 4 and 6, the longitudinal swing device 712 is pivotally connected to the transverse swing device 711 by a pin 714, and can swing longitudinally (i.e. swing through the paper as viewed in fig. 4 and 6) with respect to the transverse swing device 711.

In order to prevent the boat from freely swinging on the retractable arm structure to cause danger, the invention is also provided with a passive swing reducing mechanism, and the structure of the passive swing reducing mechanism is detailed as follows:

as shown in fig. 5, the structure of the lateral swing reducing mechanism 75 is schematically illustrated, and the lateral swing reducing mechanism includes a first damping cylinder 751, the first damping cylinder 751 has a first cylinder 7511, the first cylinder 7511 is pivotally connected to a first fixing plate 7512, and the first fixing plate 7512 is fixed on the arm support 21, so that the first cylinder 7511 can rotate relative to the arm support 21. A first piston 7513 is disposed in the first cylinder 7511, the first cylinder 7511 is divided into two hydraulic chambers by the first piston 7513, and the two hydraulic chambers are filled with oil and are communicated with each other through a first overflow valve 7514. A first piston rod 7515 extends through the first cylinder 7511 and is fixedly connected to the first piston 7513, two ends of the first piston rod 7515 extend out of the first cylinder 7511, and one end thereof is pivotally connected to the transverse swing device 711 via a first hinge 7516. One first damper spring 752 is in contact with each of both end portions of the first piston rod 7515 and the corresponding end of the first cylinder 7511.

As shown in fig. 6, the structure of the longitudinal swing reducing mechanism 72 is schematically illustrated, and the longitudinal swing reducing mechanism includes a second damping cylinder 721, the second damping cylinder 721 has a second cylinder 7211, the second cylinder 7211 is pivotally connected to a second fixing plate 7212, and the second fixing plate 7212 is fixed to the transverse swing device 711, so that the second cylinder 7211 can rotate relative to the transverse swing device 711. A second piston 7213 is provided in the second cylinder 7211, the second piston 7213 divides the second cylinder 7211 into two hydraulic chambers, and the two hydraulic chambers are filled with oil and are communicated with each other through a second overflow valve 7214. A second piston rod 7215 is inserted into the second cylinder 7211 and is fixedly connected to the second piston 7213, both ends of the second piston rod 7215 extend out of the second cylinder 7211, and one end thereof is pivotally connected to the longitudinal swing device 712 through a second hinge 7216. One second damper spring 722 is in contact with each of both end portions of the second piston rod 7215 and the corresponding end of the second cylinder 7211.

The pendulum reducing process of the invention is as follows:

as shown in fig. 5, when the transverse oscillating device 711 rotates counterclockwise relative to the fifth segment 215 of the arm support 21, the distance between one end of the first piston rod 7515 pivoted to the transverse oscillating device 711 and the first fixing plate 7512 is shortened, the distance between the other end of the first piston rod 7515 and the first fixing plate 7512 is lengthened, and the lengths of the two first damping springs 752 are also changed accordingly, so that the left first damping spring 752 is compressed in the drawing, the right first damping spring 752 is lengthened in the drawing, the restoring force direction of the two first damping springs 752 is just opposite to the moving direction of the transverse oscillating device 711, and an impact resistance effect can be achieved. Meanwhile, the first piston rod 7515 drives the first piston 7513 to move rightwards, so that the pressures in the two hydraulic cavities are not balanced any more, in order to keep the hydraulic balance, oil in the two hydraulic cavities flows back through the first overflow valve 7514 inevitably, and due to the damping effect of the first overflow valve 7514, the energy of transverse swing is consumed, the transverse swing amplitude can be attenuated, and the effect of reducing the swing is achieved. When the transverse swinging device 711 rotates clockwise relative to the arm support 21, the first damping spring 752 still has an impact resistance function, and the first damping cylinder 751 can also achieve the effect of damping the transverse swinging.

As shown in fig. 6, when the longitudinal swing device 712 rotates clockwise relative to the transverse swing device 711, the distance between one end of the second piston rod 7215 pivoted to the longitudinal swing device 712 and the second fixing plate 7212 is shortened, the distance between the other end of the first piston rod 7515 and the second fixing plate 7212 is lengthened, the lengths of the two second damping springs 722 are changed accordingly, so that the upper second damping spring 722 in the figure is compressed, the lower second damping spring 722 in the figure is lengthened, the restoring force direction of the two second damping springs 722 is opposite to the moving direction of the transverse swing device 711, and an impact resistance effect can be achieved. Meanwhile, the second piston rod 7215 drives the second piston 7213 to move upwards, so that the pressures in the two hydraulic cavities are not balanced any more, in order to keep the hydraulic balance, oil in the two hydraulic cavities flows back through the second overflow valve 7214 inevitably, and due to the damping effect of the second overflow valve 7214, the energy of longitudinal swing is consumed, the longitudinal swing amplitude can be attenuated, and the effect of reducing the swing is achieved. Of course, when the longitudinal oscillating device 712 rotates counterclockwise relative to the transverse oscillating device 711, the second damping spring 722 still has an impact-resistant effect, and the second damping cylinder 721 can also achieve the effect of damping the transverse oscillation, which is similar to the above-mentioned specific process and will not be described again.

According to the invention, the impact resistance effect of the damping spring and the energy consumption effect of the damping oil cylinder are utilized to reduce the swinging influence of the ship to the maximum extent, so that the boat can be smoothly and safely stored and released to ensure the safety of workers and equipment. And the transverse pendulum reducing mechanism and the longitudinal pendulum reducing mechanism are arranged on two planes which are vertical to each other, so that the swinging motion transmitted from any angle can be attenuated, and the pendulum reducing effect is further improved.

(III) unhooking: for controlling the slings 77 to be brought into and out of engagement with the boat.

Referring to fig. 1, 2, 4, 5, and 6, the longitudinal swing device 712 of the alignment device 71 is a hollow structure, and a quick-release device 8 is inserted and limited in the longitudinal swing device 712 and can move telescopically; a sling 77 passes through the interior of the longitudinal swing device and is connected to the quick unhooking device 8 to drive the quick unhooking device 8 to perform a lifting movement.

In addition, as shown in fig. 1 and 4, a hanging cone 74 is welded to the lower end of the longitudinal swing device 712 of the alignment device 71, the hanging cone 74 has a flared mouth with a downward-enlarged shape, and the flared mouth communicates with the interior of the longitudinal swing device 712, and is capable of being passed by the quick unhooking device 8. Due to the shape limitation of the bell mouth, the quick unhooking device 8 does not generate clamping stagnation in the process of moving upwards and retracting into the longitudinal swinging device 712, and the action is smoother.

The specific structure of the quick unhooking device 8, please refer to fig. 7, 8, 9 and 10, which includes:

the hook seat 810 is formed by fixedly connecting two parallel seat plates 811;

a hook 820 pivotally connected between the two seat plates 811 of the hook 810 by a pin 821, wherein one end of the hook 820 has a downward bent latch 822, and the other end is a stopper 823; a limit pin 824 is further disposed on one side of the block 823, and the limit pin 824 is fixed between the two seat plates 811 by a screw to prevent the hook body 820 from rotating to the side;

the wrench 830 is pivotally connected to the outside of the hook 810 through a rotating shaft 831, and the rotating shaft 831 is fixed to the wrench 830 through a fastening screw 8312, so that the rotating shaft 831 and the wrench 830 rotate synchronously. Fig. 11A, 11B, and 11C are three-side views of the rotation shaft, a relief groove 8311 is formed at a position of the rotation shaft 831 corresponding to the stopper 823 of the hook 820, when the wrench 830 is pushed up, the cylindrical outer surface of the rotation shaft 831 abuts against the stopper 823 of the hook 820 to prevent the hook 820 from rotating clockwise (as shown in fig. 7) as shown in fig. 7, when the wrench 830 falls down, the relief groove 8311 of the rotation shaft 831 allows the stopper 823 of the hook 820 to pass through, and the hook 820 can rotate clockwise as shown in fig. 7, so that the hook 822 and the boat sling (not shown) are disengaged from each other. As can also be seen in fig. 7 and 8, the wrench 830 further has a rib 833 for a control switch 840, described below, to limit the wrench 830 to the pushed-up position; moreover, the rotating shaft 831 is located below the center of mass 834 of the wrench 830 (as shown in fig. 7), so that after the control switch 840 is released from the limit of the wrench retaining edge 833, the wrench 830 will make the rotating shaft 831 actively disengage from the stop 823 abutting against the hook 820 under the action of gravity;

a control switch 840 including a fixing sleeve 841, a sliding shaft 842, a return spring 843 and an operating handle 844, wherein one end of the fixing sleeve 841 penetrates through a tube body 8411 of two seat plates 811 of the hook seat 810, the other end of the fixing sleeve 841 is a shoulder portion 8412 fixed on the hook seat 810, and the shoulder portion 8412 has a central hole; the sliding shaft 842 includes an interference section 8421, a middle section 8422 and a control section 8423 having diameters which are sequentially reduced in a length direction, the middle section 8422 of the sliding shaft 842 is sleeved with the return spring 843, and then the control section 8423 of the sliding shaft 842 is inserted into the central hole of the shoulder 8412 from the tube body 8411 of the fixing sleeve 841, the interference section 8421 of the sliding shaft 842 has a diameter equal to or slightly less than the diameter of the tube 8411, so that it can move telescopically within the tube 8411, the two ends of the return spring 843, which is inserted through the middle section 8422 of the sliding shaft 842, respectively abut against the shoulder 8412 of the fixing sleeve 841 and the interference section 8421 of the sliding shaft 842, so that the interference section 8421 of the sliding shaft 842 extends outward in a normal state to block the rib 833 of the wrench 830, after the control section 8423 of the sliding axle 842 passes through the center hole of the shoulder 8412 of the fixed sleeve 841, the operating handle 844 is connected to the interference section 8421, and the telescopic state of the interference section 8421 is controlled by the operating handle 844; in this embodiment, the operating handle 844 and the control section 8423 of the sliding shaft 842 are pivotally connected to each other by a pin 8441, the operating handle 844 has a cam surface 8442 contacting the shoulder 8412 of the fixing sleeve 841 (the cam surface 8442 may also be a surface directly contacting the hook seat 810), the distance between the point on the cam surface 8442 and the pin 8441 gradually increases (or decreases), when the operating handle 844 is rotated, the distance between the pin 8441 and the shoulder 8412 gradually increases or decreases due to the cam surface 8442, the telescopic state of the sliding shaft 842 changes accordingly, and the interference section 8421 of the sliding shaft 842 blocks the flange 833 of the wrench 830 or is out of contact with the flange 833;

a protection spring 850 wound around the fixing sleeve 841, having one end fixed and the other end abutting against the hook 822 of the hook 820, wherein another limit pin 851 is further disposed beside the end of the protection spring 850 abutting against the hook 822, and the another limit pin 824 is also fixed between the two seat plates 811 by screws, so as to prevent the protection spring 850 from popping out; the shield spring 850 functions in two ways: first, the elastic restoring force of the protection spring 850 can prevent the hook body 820 from rotating in the counterclockwise direction shown in fig. 7, so that the unhooking stopper 823 can be kept in close contact with the outer circumferential surface of the rotating shaft 831; secondly, once the lifting component (generally a ring body) of the small boat presses the protection spring 850 to be sleeved with the knuckle 822 of the hook body 820, the protection spring 850 is not actively pressed, and the hook knuckle 822 of the hook body 820 cannot be loosened, so that accidents are prevented.

The above components (including the hook seat 810, the hook body 820, the wrench 830, the control switch 840 and the protection spring 850) are all made of stainless steel, so as to prolong the service life thereof.

The operation of the quick unhooking device is described as follows:

as shown in fig. 7, in response to the fastening state of the quick unhooking device, the operation handle 844 is firstly opened, the interference section 8421 of the sliding shaft 842 is retracted into the fixing sleeve 841, then the wrench 830 is pushed up by external force until the outer circumferential surface of the rotating shaft 831 abuts against the stopper 823 of the hook body 820, and then the operation handle 844 is rotated to extend the interference section 8421 of the sliding shaft 842 and stop the stopper 833 of the wrench 830. As a result, the wrench 830 cannot rotate, and the unhooked knuckle 822 can be maintained in the hooking position. If the auxiliary function of the protection spring 850 is added, the accidental unhooking can be prevented.

As shown in fig. 8, when the boat needs to be separated from the quick unhooking device, the operation handle 844 is opened only, the interference section 8421 of the sliding shaft 842 is retracted into the fixing sleeve 841, the wrench 830 rotates under the action of gravity, the avoiding groove 8311 of the rotating shaft 831 faces upward, the stopper 823 of the hook body 820 passes through the avoiding groove 8311, the hook body 820 rotates clockwise (as shown in fig. 8) under the action of the pulling force of the boat, and the boat slips from the knuckle 822, so that the hooking relationship is released.

According to the above, the quick unhooking device can ensure the hooking safety when hooking the boat, and is simple and reliable to operate when the boat needs to be unhooked.

(IV) slings: one end of the sling 77 is connected to the quick unhooking device, and the other end is connected to a winch 26 on the parent vessel after passing around the pulleys 66 on the boom.

In the invention, in order to keep the sling 77 tensioned and prevent accidents such as breakage and the like caused by the release of the sling 77 when the mother ship falls along with sea waves, a damping and buffering device 6 is further arranged on the fifth section of the arm support.

As shown in fig. 12, which is a schematic structural view illustrating that the shock absorbing and buffering device 6 of the present invention is installed on the fifth section 215 of the arm support 21, a fixing plate 64 is welded on the fifth section 215, an L-shaped plate 65 is pivoted on the fixing plate 64 at an inflection point 651 thereof, one end (long side in this embodiment) of the L-shaped plate 65 is pivoted with a pulley 66, the pulley 66 is wound by the suspension cable 77, the other end (short side in this embodiment) of the L-shaped plate 65 is pivoted with one end of a hydraulic cylinder 61, and the other end of the hydraulic cylinder 61 is pivoted inside the hollow fifth section 215.

When the boat 24 suddenly moves downwards as shown in fig. 1 and 12, the sling 77 is tightened, so that the pulley 66 drives the L-shaped plate 65 to rotate clockwise, the hydraulic cylinder 61 is immediately pressed, and the sling 77 is prevented from being broken due to excessive tension change by the buffering action of the hydraulic cylinder 61. When the boat 24 suddenly moves upward, the slings 77 are released, and the hydraulic cylinders 61 can help tension the slings 77 to prevent the slings 77 from being too loose. In a word, this shock attenuation buffer gear can effectively reduce the pulling force fluctuation in the hoist cable, extension hoist cable life.

(V) winch:

the winch 26 used in the present invention, as shown in fig. 13, 14 and 15, includes a reduction box 510, and a tertiary shaft 583, a secondary shaft 582, a primary shaft 581 and a main shaft 580 are arranged inside the reduction box 510 from top to bottom. One side of the reduction box 510 is provided with a hydraulic motor 57, and the hydraulic motor 57 is connected with the primary shaft 581. A gear 561 and a gear 563 are provided on the primary shaft. The hydraulic motor 57 drives a gear 561 of the primary shaft 581, the gear 561 drives a gear 562 disposed on the main shaft 580, and the gear 562 drives the main shaft 580 to rotate. The main shaft 580 drives the winding drum 512 wound with the sling 77, so as to realize the winding of the sling 77 and drive the boat to rise. The roller device 54 is provided beside the winding drum 512, and the suspension cable 77 wound on the winding drum 512 is pressed by the roller device 54.

The clutch device 55 is arranged on the secondary shaft 582 in the reduction gearbox 510, the clutch device 55 comprises a primary friction plate and a secondary friction plate, the primary friction plate is connected with the secondary shaft 582, and the secondary friction plate is connected with the first gear 564 on one side of the clutch device 55. First gear 564 meshes with gear 563 and first gear 564 does not rotate with secondary shaft 582. The secondary shaft 582 is further provided with a clutch piston housing 551, a belleville spring 553, and a second gear 566 in that order. The hydraulic swivel 552 of the clutch device 55 extends out of the reduction gearbox 510 and is connected to an external hydraulic control system. A second gear 566 on secondary shaft 582 is meshed with a gear 565 provided on tertiary shaft 583.

In a normal state, when the hydraulic system is not in operation (including a failure of the hydraulic system), the male and female friction plates are pressed against each other by the pressure of the belleville spring 553, that is, the clutch device 55 is in a normally closed state. At this time, the male and female friction plates rub against each other, and the first gear 564 is coupled to the secondary shaft 582 by the friction force of the male and female friction plates. The first gear 564 rotates the secondary shaft, which in turn rotates the second gear 566. Second gear 566 drives gear 565 provided on tertiary shaft 583 to rotate tertiary shaft 583. Thereby braking the braking speed limiting device 59 arranged on the tertiary shaft 583.

To open the clutch device 55, the hydraulic system is activated and the clutch piston sleeve 551 is moved to the right by the hydraulic oil, there is no pressure between the male and female plates, and the male and female plates are separated, i.e., the secondary shaft 582 is decoupled from the first gear 564. At the moment, the braking speed limiting device 59 does not work, and the hydraulic motor 57 drives the winding drum 512 to rotate, so that the normal folding and unfolding work of the boat is realized.

When the clutch device 55 is closed, under the action of the belleville spring 553, the hydraulic oil in the clutch piston sleeve 551 is discharged, and meanwhile, the clutch piston sleeve 551 presses the primary and secondary friction plates again, so that the braking speed limiting device 59 brakes and stops the boat.

The brake speed limiter 59 is connected to the tertiary shaft 583. The braking speed limiting device 59 is provided with a weight 51, and the weight 51 is connected with a weight sleeve 596 inside the braking speed limiting device 59. The weight sleeve 596 is connected with a cam body 595, the cam body 595 is connected with a brake ring 594, a brake band 593 is arranged below the brake ring 594, and the brake band 593 is in close contact with the brake disc 592.

When the weight 51 is lowered, the weight sleeve 596 drives the cam body 595, the cam body 595 drives the brake ring 594, and the brake ring 594 compresses the brake band 593, so that the brake effect is achieved. When the weight 51 is lifted, the brake band 593 is released and the brake speed limiter 59 fails.

When the boat needs to be taken off, the hydraulic system does not work, namely, the clutch device 55 is in a closed state. The heavy hammer 51 is held up, the brake band 593 is loosened from the brake disc 592, the brake disc 592 is free from friction resistance, the work boat descends through self gravity, the gear in the whole box body rotates under the driving of the winding drum 512, and the work boat begins to descend. A convex shaft is convexly arranged on a brake disc 592 of the braking speed limiting device 59, and a speed limiting block 591 is sleeved on the convex shaft of the brake disc 592 to limit the lowering speed of the work boat.

When the weight 51 is lowered, the brake is tightened (the brake disc 592 stops rotating, the shaft coupled thereto stops rotating, and the stepwise transmission finally stops the rotation of the spool 512), and the boat stops descending. By lowering or raising the weight 51, the lowering state (lowering or stopping lowering) of the work boat can be controlled at any time.

The manual device 511 comprises a ratchet wheel 53, and the housing of the braking speed limiting device 59 is provided with a pawl 52 which is matched with the ratchet wheel 53. When manual boat lifting is required, the manual device 511 is connected with the tertiary shaft 583, and the ratchet wheel 53 can only rotate forwards and can not rotate backwards under the action of the pawl 52.

When the hydraulic system can not work, a manual boat collecting mode is adopted. That is, when the hydraulic system is out of order, the clutch device 55 is automatically closed, the braking governor 59 is operated, and the manual device 511 is installed, and the pawl 52 and the ratchet wheel 53 are engaged, and then the weight 51 is cradled. Since the third-stage shaft 583 is coupled to the manual operating device 511, the manual operating device 511 cannot rotate reversely due to the pawl 52, and thus the weight 51 is cradled and the third-stage shaft 583 cannot rotate reversely. The crank handle arranged on the manual device 511 is rotated in the forward direction, so that the boat starts to ascend, and the manual boat collecting work is completed.

(VI) the hydraulic control system: operating in conjunction with the aforementioned winch 26.

As shown in fig. 16, the hydraulic control system according to the present invention includes: an oil pump 403 is driven by a motor 402 to rotate and suck oil from an oil tank 401, the oil pump 403 passes through a third one-way valve 414a and is respectively communicated with a port P of the main control solenoid valve 441 and a pressure reducing valve 431; the manual pump 404 is also communicated with the oil tank 401 through a ball valve 413, and the oil outlet of the manual pump passes through a second one-way valve 407b and is respectively communicated with the port P of the main control solenoid valve 441 and the pressure reducing valve 431; namely, the oil pump 403 and the manual pump 404 can be used as power devices to provide pressure oil for the hydraulic control system, so that the fast boat retraction device has an electric/manual boat lifting mode.

The master control solenoid valve 441 is a two-position four-way valve which performs lifting, descending or constant tension control on a boat; the oil passage communicated with the port A is communicated with the oil passage A1 or the oil passage B1 through the first valve body 1; the port B is connected to a fourth solenoid valve 424c through a first check valve 407a, the fourth solenoid valve 424c is connected to an oil inlet on one side of the hydraulic motor 57, and the first solenoid valve 424 is connected to an oil inlet on the other side of the hydraulic motor 57.

The oil path a1 is communicated with a second electromagnetic valve 424a, and the second electromagnetic valve 424a is finally communicated with the oil inlet at the one side of the hydraulic motor 57 through a balance valve 425; the B1 oil path is communicated with a third solenoid valve 424B, and the third solenoid valve 424B is communicated with the other side oil inlet of the hydraulic motor 57.

One side of the first unloading valve 423 is communicated with an oil outlet of the first one-way valve 407a, and the other side returns to the oil tank 401 through an oil drainage pipe 449; one side of the second unloading valve 423a is communicated with the oil inlet of the first one-way valve 407a, and the other side of the second unloading valve 423a returns to the oil tank 401 through the oil drain pipe 449.

A high pressure ball valve 426 is connected to the oil inlets on both sides of the hydraulic motor 57.

The pressure reducing valve 431 is also communicated with a hydraulic control reversing valve 430, the hydraulic control reversing valve 430 is communicated with a clutch 55 (the clutch 55 is the clutch in the winch structure) through a one-way throttle 429, and a group of pressure gauges 439 and a pressure gauge switch 440 are also communicated with an oil path between the hydraulic control reversing valve 430 and the pressure reducing valve 431; the clutch 55 is disposed between the hydraulic motor 57 and the spool 512, and controls the clutch relationship between the hydraulic motor 57 and the spool 512. A limit switch 437 is also arranged on one side of the winding drum 512, and the limit switch 437 is provided with 3 paths and used for controlling the speed of the cable for launching and launching the boat.

An oil inlet at one side of the second shuttle valve 419a is communicated with an oil path connected between the second electromagnetic valve 424a and the balance valve 425, and an oil inlet at the other side is communicated with an oil path connected between the third electromagnetic valve 424b and the hydraulic motor 57; the oil outlet of the second shuttle valve 419a is communicated with the oil inlet of one side of the third shuttle valve 419b, and the oil inlet of the other side of the third shuttle valve 419b is communicated with the oil inlet of the first check valve 407 a.

When the port P of the main control electromagnetic valve 441 is communicated with the port a, the hydraulic control system realizes retraction and release of the boat, and at the time, the pressure oil in the first valve body group of the hydraulic control system has two flow paths, namely when the pressure oil flows through the second electromagnetic valve 424a from the oil path a1 of the first valve body group 1 and finally enters the hydraulic motor 57, the hydraulic motor 57 is rotated in the forward direction to wind a steel cable (not shown in the figure), so that lifting of the boat is realized; secondly, when the pressure oil flows through the third electromagnetic valve 424B from the oil path B1 of the first valve body group 1 and finally enters the hydraulic motor 57, the hydraulic motor 57 is rotated reversely to release a steel cable (not shown) to realize the descent of the boat; in both cases, pressurized oil, whether from the second solenoid valve 424a or 424b, can enter the second and third shuttle valves 419a, 419b, passing through the pilot operated directional valve 430 and opening the clutch 55 so that the hydraulic motor 57 can operate and rotate the spool 512; and the high-pressure ball valve 426 can prevent the pressure in the oil passages on the two sides of the small boat from being too high in a load-relief mode in the process of lifting or descending the small boat, and plays a role in protecting the hydraulic motor.

When the boat is placed on the water surface and the hook is still kept, the hydraulic control system can realize constant tension control on the steel cable, at the moment, the P port of the main control electromagnetic valve 441 is communicated with the B port, when the oil pressure in the oil path is in a normal range, pressure oil flows through the first one-way valve 407a from the B port, then flows through the fourth electromagnetic valve 424c and finally is communicated with the hydraulic motor 57, the hydraulic motor 57 is also communicated with the first electromagnetic valve 424, and the constant tension control on the steel cable is realized by controlling the hydraulic motor 57 in the forward and reverse directions; when the oil pressure in the oil path is too high, the pressure oil can flow through the first load relief valve 423, and the oil pressure in the system is ensured to be in a normal range in a load relief mode; the control mode ensures that the steel cable is always in a tensioning state, and the preparation is prepared for lifting the boat at any time while the shaking of the boat is reduced, namely the safety is ensured.

As shown in fig. 17, in another preferred embodiment of the present invention, the hydraulic control system may further include a plurality of latch cylinders 432 and a plurality of proximity switches 438, and the latch cylinders 432 are in communication with the second valve body group 2; after the boat is folded, the hydraulic locks are locked by controlling the oil pressure in a plurality of bolt oil cylinders 432 communicated with the second valve body group 2 so as to fix the boat on the suspension arm, thereby avoiding accidents; when the boat needs to be discharged to the outside, the latch cylinders 432 are released one by one to release the boat.

As shown in fig. 18, in a further preferred embodiment of the invention, in the horn, the horn cylinder 435 communicates with a two-way balancing valve 433, the two-way balancing valve 433 in turn communicating with a manual directional valve 448 via a manual directional valve 447; one oil port of the manual reversing valve 448 is communicated with the B3 oil path of the third valve body group 3, and the other oil port is communicated with the energy accumulator 417 through a one-way throttle valve 422, that is, the luffing cylinder of the luffing mechanism can respectively perform telescopic motion by the system oil pressure or the hydraulic energy provided by the energy accumulator, thereby realizing the luffing control of the boom (not shown).

The damping device reduces the vibration of the boat caused by external disturbance in the retraction and release process of the boat through the action of the damping oil cylinder 442, reduces the tension fluctuation in the steel cable and plays a role in damping and buffering.

The anti-swing device mainly comprises two swing reducing

oil cylinders

443 and 446 which are vertically arranged and a throttle valve 444 which is respectively communicated with the two swing reducing oil cylinders, and the two swing reducing oil cylinders are respectively used for reducing the transverse swing and the longitudinal swing of the boat. The transverse anti-swing oil cylinder is arranged in the plane of the suspension arm and the steel cable, and the longitudinal anti-swing oil cylinder is arranged in the plane which is vertical to the suspension arm and the steel cable. When the small boat works, when the small boat swings due to the swinging and the action of the mother boat and the wind waves, the damping oil cylinders control the flow of hydraulic oil through the throttle valves 444, so that the swinging amplitude of the small boat is reduced. The pendulum reduction in the boat folding and unfolding process is realized.

(VII) intelligent bracket device: and after the small boat is retracted into the mother boat, the small boat is fixed.

As shown in fig. 19 and 20, the present invention provides an intelligent cradle device, including:

a fixing plate 910 fixed to a mother ship (not shown) by screws 911;

two bracket plates 912 symmetrically pivoted on the left side and the right side of the fixed plate 910, wherein a supporting block 913 is fixed upwards at the overhanging end of each bracket plate 912, and a rubber block 914 is fixed on the upper surface of each supporting block 913;

two telescopic cylinders 915 respectively connected between the fixed plate 910 and the two supporting plates 912, for controlling the two supporting plates 912 to simultaneously lift upwards (as shown in fig. 20) or simultaneously fall downwards (as shown in fig. 19).

When the present invention is used, as shown in fig. 21, after the boat 24 is recovered in place, hydraulic oil is injected into the telescopic cylinder 915 to make it contract, and the two support plates 912 swing upward until the rubber block 914 is in close contact with the bottom of the boat 24 (generally, two or more intelligent bracket devices are correspondingly disposed at the bottom of one boat 24). In this way, the rubber block 914 pushes the bottom of the small boat 24 to bear part of the gravity of the small boat 24, and the pressure between the rubber block 914 and the bottom of the small boat 24 generates enough static friction force to prevent the small boat 24 from swinging left and right, so that the small boat 24 is stably fixed on the mother boat to prevent the small boat 24 from swinging and colliding; when the boat 24 needs to be put down, the stretching oil cylinder 915 is controlled to stretch, so that the action is rapid, and the time for collecting and releasing the boat 24 is saved.

Based on the above embodiment, the supporting blocks 913 may be omitted, and the rubber blocks 914 may be directly fixed to the ends of the supporting plates 912, only to pay attention that the supporting plates 912 do not interfere with the bottom of the boat 24.

< example 2 (open type) >

It is characterized in that: the structural form of the retractable arm structure has great difference.

(one) receive and release arm structure: which is the main difference from example 1.

As shown in fig. 22 and 23, the present invention adopts an open type retractable arm structure, which includes:

as shown in fig. 3, the rotating mechanism 11 comprises a base 111, a rotating bearing 112, a rotating tower 113 and a driving mechanism 114, wherein the base 111 is fixed on a deck of the mother ship, the rotating tower 113 is pivotally connected to the base 111 through the rotating bearing 112, and the driving mechanism 114 drives the rotating tower 113 to rotate around the base 111. In the present embodiment, the driving mechanism 114 is a hydraulic driving motor fixed on the rotating tower 113, an external gear (not shown) is connected to an output shaft of the hydraulic driving motor, an internal gear (not shown) is disposed on the base, and the internal gear and the external gear are engaged with each other, so that the rotating tower 113 can rotate around the base 111 under the action of the hydraulic driving motor.

The arm support 12 includes a fixed arm 121 pivotally connected to the rotating tower 113, a sliding arm 122 slidably disposed on the fixed arm 121 and capable of linearly moving relative to the fixed arm 121 in a length direction, and a telescopic cylinder 123 having two ends respectively connected to the fixed arm 121 and the sliding arm 122.

And a luffing cylinder 13, both ends of which are respectively connected to the rotating tower body 113 and the fixed arm 121, for driving the fixed arm 121 to lift or fall.

In this way, when the boat needs to be retrieved, the swing mechanism 11 is first used to rotate the arm support 12 in a direction toward the outboard side of the boat, then the luffing cylinder 13 is used to drop the arm support 12, and then the telescopic cylinder 123 is controlled to extend the sliding arm 122 until the unhooking provided at the front end of the sliding arm 122 can be connected to the boat. Of course, in the retracting process, the sequence of the operations of the luffing cylinder 13 and the telescopic cylinder 123 may also be changed, and even the luffing cylinder 13 and the telescopic cylinder 123 may need to be used alternately to enable the unhooking arranged at the front end of the sliding arm 122 to be smoothly connected with the boat, which is feasible.

Because the arm support 12 can be extended, when the small boat is folded and unfolded, the small boat does not need to be close to the mother ship, and the small boat is prevented from touching the mother ship under the 6-level sea condition.

When the utility model does not work, the swing mechanism 11 can be used to turn the arm support 12 to the direction towards the inner side of the ship board, and then the small boat can be lifted to a certain height through the amplitude-variable oil cylinder 13, so that the small boat is not influenced by the height of the machine on the mother ship; in addition, the use of the turning mechanism 11 for turning can also avoid the violent shaking caused by the moment when the center of gravity is transferred.

When the small boat is recovered to a position close to the deck of the mother ship, a certain angle is formed between the small boat and the mother ship due to the influence of wind waves, certain difficulty and danger are caused for workers on the small boat to return to the mother ship, and at the moment, the small boat and the mother ship can be in a parallel state by utilizing the adjustment of the rotary mechanism, so that the workers can return to the mother ship.

The drive mechanism 114 may be arranged in a number of equivalent ways, such as:

the driving mechanism can also be implemented as a driving motor fixed on the base, then an external gear is connected on the output shaft of the driving motor, an internal gear is fixedly arranged on the rotary tower body, and the external gear and the internal gear are meshed with each other; or,

the driving mechanism is still implemented as a driving motor fixed on the base, an external gear is connected on the output shaft of the driving motor, however, another external gear is fixedly arranged on the rotary tower body, and the external gear and the another external gear are meshed with each other;

these solutions are all realizable.

(II) an alignment device: as can be seen from fig. 22 and 23, the aligning device 71 for abutting against the boat is connected to the overhanging end of the sliding arm 122 of the arm support 12, the longitudinal swing device of the aligning device 71 is a hollow structure for the following unhooking to pass through, and in addition, the lower end of the longitudinal swing device of the aligning device 71 is also welded with a hanging cone, and these structures are the same as those in embodiment 1, and therefore, the details are not repeated.

In order to prevent the boat from freely swinging on the retractable arm structure to cause danger, the invention is also provided with a passive swing reducing mechanism, and the structure of the passive swing reducing mechanism is the same as that of the embodiment 1.

(III) unhooking: the structure for controlling the slings 77 to be brought into and out of engagement with the boat is the same as that of embodiment 1.

(IV) slings: one end of the sling 77 is connected to the unhooking device, and the other end is connected to a winch 26 fixed to the revolving tower 113 after passing around a plurality of pulleys 66 on the arm support.

Similarly, a shock absorbing and buffering device 6 is further provided between the pulley 66 and the revolving tower 113 in order to keep the suspension cable 77 tensioned and prevent the suspension cable 77 from being loosened and broken when the mother ship falls with the ocean waves.

(V) winch: is fixed to the revolving tower 113 and rotates together with the revolving tower.

(VI) the hydraulic control system: the winch 26 operates in accordance with the above, and has the same structure as that of embodiment 1.

(VII) intelligent bracket device: the structure is the same as that in embodiment 1, and is not described in detail.

The foregoing description of the invention is illustrative and not restrictive, and it will be understood by those skilled in the art that many changes, variations or equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A quick boat retraction device for lowering a boat from a mother ship to the sea or retrieving the boat from the sea to the mother ship, comprising:

2. The boat quick retraction device according to claim 1, wherein: this receive and release arm structure is a concealed high-speed boat receive and release arm structure, includes: one end of the arm support is pivoted on the mother ship, and the other end of the arm support is an overhanging end; one end of the amplitude-variable oil cylinder is pivoted on the mother ship, and the other end of the amplitude-variable oil cylinder is pivoted with the arm support; and the cantilever end of the arm support is bent into a concave shape, and the concave cantilever end is provided with an opening facing the outer side of the ship board of the mother ship.

3. The boat quick retraction device according to claim 2, wherein: the arm support comprises: a first section pivoted on the mother vessel, a second section horizontally placed in a retracted state, a third section obliquely crossing the second section, a fourth section vertically placed in a retracted state, and a fifth section obliquely crossing the fourth section, the aligning device being connected to an end of the fifth section of the boom.

4. The boat quick retraction device according to claim 1, wherein: this receive and release arm structure is an open-type high-speed boat receive and release arm, includes:

5. The boat quick retraction device according to claim 4, wherein: the driving mechanism is a hydraulic driving motor fixed on the rotary tower body, an external gear is connected to an output shaft of the hydraulic driving motor, an internal gear is fixedly arranged on the base, and the internal gear and the external gear are meshed with each other.

6. The boat quick retraction device according to claim 1, wherein: a first cylinder body of a first damping oil cylinder is rotatably connected to the retractable arm structure, a piston rod of the first damping oil cylinder is pivoted on the transverse swinging device, at least one first damping spring is arranged between the piston rod of the first damping oil cylinder and the cylinder body of the first damping oil cylinder, a piston arranged in the first cylinder body divides the first cylinder body into two hydraulic cavities, and the two hydraulic cavities of the first cylinder body are mutually communicated through a first overflow valve;

7. The boat quick retraction device according to claim 1, wherein: the longitudinal swing device of the alignment device is of a hollow structure, and the unhooking device is penetrated and limited in the hollow structure of the longitudinal swing device and can move in the longitudinal swing device in a telescopic way; the sling passes through the inner part of the longitudinal swinging device and is connected with the unhook.

8. The boat quick retraction device according to claim 7, wherein: the lower end of the longitudinal swinging device of the aligning device is connected with a hanging cone in a welding mode, the hanging cone is provided with a downward-expanding horn mouth, and the horn mouth is communicated with the interior of the longitudinal swinging device and can be used for the unhooking to pass through.

9. The boat quick retraction device according to claim 1, wherein: this unhook is a quick unhook device, includes:

10. The boat quick retraction device according to claim 9, wherein: the hook seat is formed by fixedly connecting two seat boards which are parallel to each other.

11. The boat quick retraction device according to claim 10, wherein: the hook body is pivoted between the two seat boards of the hook seat through a pin shaft.

12. The boat quick retraction device according to claim 9, wherein: the operating handle and the control section of the sliding shaft are mutually pivoted through a pin, the operating handle is provided with a cam surface which is contacted with the shoulder part of the fixed sleeve or the hook seat, and the distance between the cam surface and the pin is gradually increased or decreased.

13. The boat quick retraction device according to claim 9, wherein: the protection spring is wound on the fixing sleeve, one end of the protection spring is fixed, and the other end of the protection spring is abutted to the coupler knuckle of the coupler body, so that the unhooked check block is in close contact with the baffle of the wrench.

14. The boat quick retraction device according to claim 9, wherein: the rotating shaft is positioned at the position below the mass center of the wrench.

15. The boat quick retraction device according to claim 9, wherein: the hook seat, the hook body, the wrench and the control switch are all made of stainless steel.

16. The boat quick retraction device according to claim 1, wherein: the L-shaped plate is pivoted with the pulley by a long edge, and the L-shaped plate is pivoted with the hydraulic cylinder by a short edge.

17. The boat quick launch and recovery device of claim 1, wherein the winch includes:

18. The boat quick release and release device of claim 17, wherein the brake limiting device comprises a weight, the weight is connected to a weight sleeve, the weight sleeve is connected to a cam body, the cam body is connected to a brake ring, a brake band is arranged below the brake ring, and the lower side of the brake band is in close contact with the brake disc.

19. The boat quick retraction device according to claim 18, wherein: the braking speed limiting device also comprises a speed limiting block, and the speed limiting block is sleeved on a convex shaft arranged on the brake disc.

20. The boat quick retraction device according to claim 17, wherein: the winch further comprises a manual device, the manual device is arranged on the third-level shaft and comprises a crank and a ratchet wheel, and a pawl matched with the ratchet wheel is arranged on the braking speed limiting device.

21. The boat quick retraction device according to claim 17, wherein: a roller device for pressing the rope is arranged beside the winding drum.

22. The boat quick launch and release apparatus of claim 17, wherein the winch-connected hydraulic control system comprises:

23. The boat quick retraction device according to claim 22, wherein: the oil circuit communicated with the port A of the main control electromagnetic valve is respectively communicated with the oil circuit A1 or the oil circuit B1 through a first valve body group; the A1 oil path is communicated with a second electromagnetic valve which passes through a balance valve and is finally communicated with an oil inlet at one side of the hydraulic motor; the B1 oil path is communicated with a third electromagnetic valve, and the third electromagnetic valve is communicated with an oil inlet on the other side of the hydraulic motor.

24. The boat quick retraction device according to claim 23, wherein: the pressure reducing valve is also communicated with a hydraulic control reversing valve which is communicated with the clutch device in the winch through a one-way throttle valve.

25. The boat quick retraction device according to claim 24, wherein: and a high-pressure ball valve is communicated with oil inlets at two sides of the hydraulic motor.

26. The boat quick retraction device according to claim 25, wherein: the hydraulic control system further includes a second shuttle valve and a third shuttle valve; an oil inlet at one side of the second shuttle valve is communicated with an oil path connected between the second electromagnetic valve and the balance valve, and an oil inlet at the other side of the second shuttle valve is communicated with an oil path connected between the third electromagnetic valve and the hydraulic motor; an oil inlet at one side of the third shuttle valve is communicated with an oil outlet of the second shuttle valve, and an oil inlet at the other side of the third shuttle valve is communicated with an oil inlet of the first one-way valve.

27. The boat quick retraction device according to claim 26, wherein: the hydraulic control system also comprises a manual pump which is communicated with the oil tank through a ball valve, and an oil outlet of the manual pump is communicated with the P port of the main control electromagnetic valve and the pressure reducing valve through a second one-way valve respectively.

28. A boat quick retraction device according to any one of claims 22 to 27 wherein: the hydraulic control system also comprises a plurality of bolt oil cylinders and a plurality of proximity switches, wherein the bolt oil cylinders are communicated with the second valve body group.

29. A boat quick retraction device according to any one of claims 22 to 27 wherein: the hydraulic control system also comprises a variable amplitude oil cylinder and a bidirectional balance valve, wherein the variable amplitude oil cylinder is communicated with the bidirectional balance valve, and the bidirectional balance valve is communicated with a manual reversing valve 2 through a manual reversing valve 1; one oil port of the manual reversing valve 2 is communicated with the B3 oil path of the third valve body group, and the other oil port of the manual reversing valve is communicated with the energy accumulator through a one-way throttle valve.

30. A boat quick retraction device according to any one of claims 22 to 27 wherein: the hydraulic control system also comprises a damping oil cylinder, two swing reducing oil cylinders and two throttle valves, wherein the two swing reducing oil cylinders are perpendicular to each other, and the two swing reducing oil cylinders are respectively communicated with the two throttle valves.

31. The boat quick retraction device according to claim 1, wherein: still include two at least intelligent bracket devices, each intelligent bracket device includes:

a fixing plate fixed on the mother ship;

32. The boat quick stowing and releasing device of claim 31, characterized in that: and a supporting block is upwards fixed at the overhanging end of each support plate, and the rubber block is fixed on the upper surface of the supporting block.