CN212267775U

CN212267775U - Multifunctional work boat hoisting operation platform

Info

Publication number: CN212267775U
Application number: CN202020773922.7U
Authority: CN
Inventors: 沈建华
Original assignee: Shanghai Maritime Pilot's Association China
Current assignee: Shanghai Maritime Pilot's Association China
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-01-01
Anticipated expiration: 2030-05-11

Abstract

The utility model provides a multi-functional work ship hoist and mount operation platform belongs to piloting technical field. It includes the hoisting machine of two looks oppositions, turns right from a left side between two hoisting machines and is equipped with first fixed supporting bench, the first supporting bench that can overturn, the second that can overturn of bottom and pilot ship deck fixed connection in proper order and fix a supporting bench and the second, the hoisting machine including fixing the hoist and mount frame on the pilot ship deck, the hoist and mount frame on articulated have cantilever crane and hydraulic cylinder, hydraulic cylinder's output shaft is articulated with cantilever crane, is equipped with the telescopic boom structure that is the level setting on cantilever crane, telescopic boom structure can follow the horizontal direction and advance or retreat. The utility model discloses can be according to not unidimensional work ship, adjustment davit length matches with the work ship, can satisfy different hoisting point skiff in the regulation interval and hang and put the needs, realize one and hang the advantage of multiple spot to improve the adaptability of hoist and mount work.

Description

Multifunctional work boat hoisting operation platform

Technical Field

The utility model belongs to the technical field of the pilotage, a multi-functional work ship hoist and mount operation platform is related to.

Background

The piloting boat is a ferry boat which is placed on a piloting ship and used for receiving and sending a piloting person to and from the piloted ship and between the piloting ships. At present, piloting boats generally have two specifications of 7.8 meters and 11.6 meters, and are V-shaped boat bottom boats.

When the piloting boat is in idle state or overhauls the state, need with the boat hoist and mount to the piloting ship on, hoisting equipment is located the piloting ship on, is fixed position usually, can't remove, when facing different boats, need adjust the distance between the hoisting equipment on boat and the piloting station repeatedly to realize the hoist and mount, consequently hoist and mount work is consuming time more.

On the other hand, after the pilot boat is pulled back to the pilot boat, the pilot boat needs to be placed on a pilot boat deck, the space of the pilot boat deck is limited, and if support tables corresponding to pilot boats of different lengths are to be arranged, a plurality of sets of support tables need to be added, and more deck space is occupied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a multi-functional work ship hoist and mount operation platform is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

a multifunctional working boat hoisting operation platform comprises two opposite hoisting machines, a first fixed supporting platform, a first turnable supporting platform, a second turnable supporting platform and a second fixed supporting platform which are fixedly connected with a pilot boat deck are sequentially arranged between the two hoisting machines from left to right, the hoisting machines comprise hoisting machine bases fixed on the pilot boat deck, cantilever supports and hydraulic cylinders are hinged on the hoisting machine bases, output shafts of the hydraulic cylinders are hinged with the cantilever supports, telescopic boom structures horizontally arranged are arranged on the cantilever supports and can move forward or backward along the horizontal direction,

first fixed brace table and second fixed brace table upper surface have the fixed stay plane that is the V style of calligraphy, first brace table that can overturn includes two supporting bench connecting seats of opposition to and be located the upset hydro-cylinder between two supporting bench connecting seats, the upset support bottom is articulated with two supporting bench connecting seats, the output shaft of upset hydro-cylinder overturns the support.

In foretell multifunctional work ship hoist and mount work platform, the upset support include two with a supporting bench connecting seat one-to-one's upset pillar, through upset connecting seat fixed connection between two upset pillars, the output shaft of upset hydro-cylinder is articulated bottom the upset connecting seat, two upset pillar tops are equipped with the backup pad that is the slope setting respectively, the contained angle between two backup pads is the obtuse angle, is equipped with a rubber tie plate in every backup pad.

In foretell multifunctional work ship hoist and mount work platform, one side that the brace table connecting seat is close to the upset hydro-cylinder be equipped with certainly be the positioning baffle of vertical setting, one side that the upset hydro-cylinder was kept away from to the brace table connecting seat is equipped with the bolt hole, still include one and prevent the post of empting, when the upset support overturns under the effect of upset hydro-cylinder, prevent that the position of the post of empting corresponds with the upset connecting seat.

In the above multifunctional work boat hoisting operation platform, the telescopic boom structure includes an outer boom fixed on the boom support and horizontally arranged, a linear driver is fixed on the outer boom, an inner boom is movably connected in the outer boom, an output shaft of the linear driver is connected with the inner boom, an inner boom pulley block is arranged at the end of the inner boom, and an outer boom pulley block corresponding to the inner boom pulley block is arranged at the bottom of the outer boom.

In the multifunctional working boat hoisting operation platform, the cross sections of the outer boom and the inner boom are respectively rectangular, the outer boom is of a hollow structure, the outer wall of the inner boom is provided with a slide rail groove which is sunken towards the inner part of the inner boom, and the inner wall of the outer boom is provided with a roller corresponding to the slide rail groove.

In the multifunctional working boat hoisting operation platform, the four side walls of the inner lifting arm are respectively provided with the slide rail grooves, and the slide rail grooves on every two opposite side walls are the same in number and are in one-to-one correspondence in position.

In the multifunctional working boat hoisting operation platform, the inner boom pulley block comprises an inner boom pulley support frame arranged on the lower surface of the end part of the inner boom, and an inner boom fixed pulley is rotatably connected to the inner boom pulley support frame.

In the multifunctional working boat hoisting operation platform, the inner boom pulley block further comprises two opposite connecting lugs fixed on the lower surface of the end part of the inner boom, and two ends of the inner boom pulley support frame are respectively inserted into the two connecting lugs and are rotatably connected with the connecting lugs.

In the multifunctional work boat hoisting operation platform, the outer boom pulley block comprises a first outer boom pulley support frame fixed on the lower surface of the outer boom and a second outer boom pulley support frame fixed on the side wall of the boom support, a first outer boom fixed pulley and a second outer boom fixed pulley are respectively and rotatably connected in the first outer boom pulley support frame and the second outer boom pulley support frame, the planes where the first outer boom fixed pulley and the second outer boom fixed pulley are located are mutually vertical, the first outer boom fixed pulley is horizontally arranged, and the chute heights of the inner boom fixed pulley and the second outer boom fixed pulley are respectively corresponding to the chute height of the first outer boom fixed pulley.

In the multifunctional working boat hoisting operation platform, when the plane where the inner boom pulley support frame is located is vertical to the horizontal plane, the planes where the inner boom fixed pulley, the first outer boom fixed pulley and the second outer boom fixed pulley are located are respectively vertical to each other.

In the multifunctional work boat hoisting operation platform, the bottom of the cantilever support is provided with the winch, the cable on the winch sequentially penetrates through the second outer boom fixed pulley, the first outer boom fixed pulley and the inner boom fixed pulley, and the end part of the cable is provided with the lifting hook.

In the multifunctional work boat hoisting work platform, the linear driver is fixed on the side wall of the inner suspension arm.

In the multifunctional work boat hoisting work platform, the output shaft of the linear driver is connected with the side wall of the inner boom through the corrugated pipe.

Compared with the prior art, the utility model has the advantages of: 1. the length of the suspension arm can be adjusted according to the working boats with different sizes, the suspension arm is matched with the working boats, the lifting requirements of different lifting point boats in a specified interval can be met, the advantage of one-lifting multi-point is realized, the adaptability of lifting work is improved, different support tables can correspond to different piloting boats, the deck space of the piloting boat is highly utilized, and space waste is avoided; 2. the hoisting device can automatically adapt to the shaking of the working boat in the hoisting process, the directions of the mooring rope and the working boat are adjusted, and the hoisting work is stable and reliable; 3. The multi-stage fixed pulley is arranged, so that the mooring rope can be prevented from being separated, and the safety of hoisting work is improved.

Drawings

FIG. 1 is a schematic structural view of a hoisting machine;

FIG. 2 is a schematic structural view of a telescopic boom structure;

FIG. 3 is a schematic view of the structure of FIG. 2 in another orientation;

FIG. 4 is a sectional view A-A of FIG. 1;

FIG. 5 is a cross-sectional view B-B of FIG. 1;

fig. 6 is a schematic structural view of the present invention;

FIG. 7 is a schematic plan view of a first fixed support table, a first reversible support table, a second reversible support table and a second fixed support table;

FIG. 8 is a schematic view of a first reversible support table;

FIG. 9 is a schematic view of FIG. 8 in another orientation;

FIG. 10 is a schematic diagram of the present invention;

fig. 11 is an operation principle diagram of another state of the present invention.

In the figure, a cantilever support 1, an oil cylinder hinged platform 1a, an outer boom 2, a linear driver 3, an inner boom 4, an inner boom pulley block 5, an outer boom pulley block 6, a slide rail groove 7, an inner boom pulley support frame 8, an inner boom fixed pulley 9, a connecting lug 10, a first outer boom pulley support frame 11, a second outer boom pulley support frame 12, a first outer boom fixed pulley 13, a second outer boom fixed pulley 14, a winch 15, a cable 16, a lifting hook 17, a corrugated pipe 18, a lifting machine 20, a first fixed support table 21, a first reversible support table 22, a second reversible support table 23, a second fixed support table 24, a fixed support surface 25, a support table connecting seat 26, a turnover oil cylinder 27, a turnover support 28, a turnover support column 29, a turnover connecting seat 30, a support plate 31, a rubber cushion plate 32, a positioning baffle 33, a bolt hole 34, a turnover column 35, a lifting machine seat 100, Hydraulic cylinder 101, hydraulic motor 102, auxiliary pulley 103.

Detailed Description

As shown in fig. 1, 4 and 6, a multifunctional work boat hoisting operation platform comprises two opposite hoisting machines 20, wherein a first fixed supporting table 21, a first turnable supporting table 22, a second turnable supporting table 23 and a second fixed supporting table 24, the bottoms of which are fixedly connected with a navigation ship deck, are sequentially arranged between the two hoisting machines 20 from left to right, the hoisting machines 20 comprise hoisting machine bases 100 fixed on the navigation ship deck, the hoisting machine bases 100 are hinged with a cantilever support 1 and a hydraulic oil cylinder 101, an output shaft of the hydraulic oil cylinder 101 is hinged with the cantilever support 1, a telescopic boom structure which is horizontally arranged is arranged on the cantilever support 1, and the telescopic boom structure can move forward or backward along the horizontal direction.

Referring to fig. 7-9, the upper surfaces of the first fixed supporting platform 21 and the second fixed supporting platform 24 are provided with a fixed supporting surface 25 in a V shape, the first reversible supporting platform 22 includes two opposite supporting platform connecting seats 26, and a turning cylinder 27 located between the two supporting platform connecting seats 26, the bottom of the turning support 28 is hinged to the two supporting platform connecting seats 26, and the output shaft of the turning cylinder 27 is connected to the turning support 28. The second reversible support table 23 is identical in construction to the first reversible support table 22 and will not be described in detail herein.

In order to show the shapes of the first fixed support table 21 and the second fixed support table 24, the first fixed support table 21 and the second fixed support table 24 are shown rotated by 90 ° in fig. 7.

Upset support 28 includes two upset pillars 29 with a supporting bench connecting seat 26 one-to-one, through upset connecting seat 30 fixed connection between two upset pillars 29, upset hydro-cylinder 27 bottom is articulated with the deck, the output shaft and the upset connecting seat 30 bottom of upset hydro-cylinder 27 are articulated, two upset pillar 29 tops are equipped with the backup pad 31 that the slope set up respectively, contained angle between two backup pads 31 is the obtuse angle, this obtuse angle is preferred 110 and adds power 145, be equipped with a rubber backing plate 32 on every backup pad 31, play the cushioning effect, prevent to cause wearing and tearing bottom the hull.

One side that supporting bench connecting seat 26 is close to upset hydro-cylinder 27 is equipped with the positioning baffle 33 that must be vertical setting, one side that supporting bench connecting seat 26 kept away from upset hydro-cylinder 27 is equipped with bolt hole 34, still include one and prevent empting post 35, when upset support 28 overturns under upset hydro-cylinder 27's effect, the position that prevents empting post 35 corresponds with upset connecting seat 30, correspondence here indicates that upset connecting seat 30 can press and establish on preventing empting post 35, prevent that upset connecting seat 30 from excessively empting, surpass the stroke of upset hydro-cylinder 27, lead to the upset hydro-cylinder can not pull back upset connecting seat 30.

Set up the aim at of two sets of brace tables, when the skiff is 11.6 meters, upset hydro-cylinder 27 work promotes brace table connecting seat 26 and drives upset support 28 and rotates to make the high reduction of upset support 28, the skiff is placed on first fixed brace table 21 and the fixed brace table 24 of second, and the height of first fixed brace table 21 and the fixed brace table 24 of second can be the same, also can be different. When the size of the boat is 7.8 meters, the overturning oil cylinder 27 pulls the overturning support 28 to touch the positioning baffle 33, the bolt is inserted into the bolt hole 34 to lock the overturning strut 29, the overturning strut 29 is in a vertical state, the boat is placed on the support plate 31, switching of boats of different sizes is achieved, adaptability is improved, two sets of support tables do not need to be prepared, and therefore deck space is saved.

In this embodiment, the middle of the cantilever 1 protrudes outwards to form a cylinder hinge table 1a, and the output shaft of the hydraulic cylinder 101 is hinged to the hinge table 1 a. When the hydraulic oil cylinder 101 works, the cantilever support 1 can be driven to incline, so that the cantilever support 1 extends out of the pilot ship and is hoisted by the telescopic boom structure and the working boat.

Referring to fig. 2 and 3, the telescopic boom structure includes an outer boom 2 fixed on a boom support 1 and horizontally disposed, a linear driver 3 fixed on the outer boom 2, an inner boom 4 movably connected in the outer boom 2, an output shaft of the linear driver 3 connected to the inner boom 4, an inner boom pulley block 5 arranged at an end of the inner boom 4, and an outer boom pulley block 6 corresponding to the inner boom pulley block 5 arranged at a bottom of the outer boom 2. The linear drive 3 can be a pneumatic cylinder, a hydraulic cylinder or a spindle guide, preferably a hydraulic cylinder or a linear motor. When the structure is a screw rod and screw sleeve structure, the screw sleeve is connected with the inner suspension arm 4, the screw rod is in threaded connection with the screw sleeve, the screw rod is connected with a motor, and the screw sleeve is driven to move back and forth through the rotation of the screw rod.

In the present embodiment, the linear drive 3 is fixed to the side wall of the inner boom 4. Preferably, the output shaft of the linear actuator 3 is connected to the side wall of the inner boom 4 via a bellows 18. Through the transition of bellows 18 for the output shaft of linear actuator 3 and interior davit 4 realize the buffering, and when interior davit 4 rocked, kinetic energy was absorbed to accessible bellows 18, and the output shaft of linear actuator reduces the influence, thereby makes the operating condition temperature of linear actuator 3, also can prolong the life of linear actuator 3.

The outer boom 2 and the inner boom 4 may be cylindrical, in this embodiment, as a preferred scheme, the cross sections of the outer boom 2 and the inner boom 4 are respectively rectangular, the rectangular structure is convenient for installing other components on the inner boom and the outer boom, the outer boom 2 is a hollow structure for the inner boom 4 to go in and out, the outer wall of the inner boom 4 is provided with a slide rail groove 7 recessed towards the inside of the inner boom 4, the inner wall of the outer boom 2 is provided with a roller corresponding to the slide rail groove 7, which is not shown in the figure, and the cooperation between the roller and the slide rail groove is a conventional technology in the art, and this embodiment is also not very important, and therefore, too much description is not made.

Four side walls of the inner suspension arm 4 are respectively provided with a slide rail groove 7, and the slide rail grooves 7 on every two opposite side walls have the same quantity and are in one-to-one correspondence in position. Because the inner suspension arm is of a rectangular structure, the inner suspension arm is provided with two groups of opposite side walls, the number of the slide rail grooves 7 on each group of side walls is the same, and the two groups of side walls are symmetrically arranged.

The inner boom pulley block 5 comprises an inner boom pulley support frame 8 arranged on the lower surface of the end part of the inner boom 4, and an inner boom fixed pulley 9 is rotatably connected to the inner boom pulley support frame 8.

Preferably, the inner boom pulley block 5 further comprises two oppositely-arranged connection lugs 10 fixed on the lower surface of the end portion of the inner boom 4, and two ends of the inner boom pulley support frame 8 are respectively inserted into the two connection lugs 10 and are rotatably connected with the connection lugs 10. Like this, interior davit pulley support frame 8 just can follow engaging lug 10 swing, and this is that consequently when hoist and mount work ship, because stormy waves or surge, work ship can take place to rock, and interior davit pulley support frame 8 in time takes place to deflect, rocks the cooperation with work ship, avoids hoist and mount to break away from with interior davit fixed pulley 9 with hawser.

The outer boom pulley block 6 comprises a first outer boom pulley support frame 11 fixed on the lower surface of the outer boom 2 and a second outer boom pulley support frame 12 fixed on the side wall of the boom support 1, a first outer boom fixed pulley 13 and a second outer boom fixed pulley 14 are respectively and rotatably connected in the first outer boom pulley support frame 11 and the second outer boom pulley support frame 12, planes where the first outer boom fixed pulley 13 and the second outer boom fixed pulley 14 are located are perpendicular to each other, the first outer boom fixed pulley 13 is horizontally arranged, and the sliding groove heights of the inner boom fixed pulley 9 and the second outer boom fixed pulley 14 are respectively corresponding to the sliding groove height of the first outer boom fixed pulley 13.

In this embodiment, a horizontally arranged first outer boom fixed pulley 13 is used as the transition wheel because the inner boom fixed pulley 9 will swing along with the inner boom pulley support frame 8, if the second outer boom fixed pulley 14 is directly used for connection, the two are easy to separate, and the swing of the inner boom fixed pulley 9 by using the horizontally arranged first outer boom fixed pulley 13 basically does not affect the separation of the first outer boom fixed pulley 13, so the whole pulley block structure can normally operate.

When the plane of the inner boom pulley support frame 8 is vertical to the horizontal plane, that is, the inner boom fixed pulley 9 is in a static state, the planes of the inner boom fixed pulley 9, the first outer boom fixed pulley 13 and the second outer boom fixed pulley 14 are respectively vertical to each other.

The bottom of the cantilever support 1 is provided with a winch 15, a cable 16 on the winch 15 sequentially penetrates through the second outer boom fixed pulley 14, the first outer boom fixed pulley 13 and the inner boom fixed pulley 9, and the end part of the cable 16 is provided with a lifting hook 17.

Preferably, a hydraulic motor 102 is further disposed on the base 100, an output shaft of the hydraulic motor is connected to an auxiliary pulley 103, and a cable 16 coming out of the winch 15 firstly passes through the second outer boom fixed pulley 14, the first outer boom fixed pulley 13 and the inner boom fixed pulley 9 after passing around the auxiliary pulley 103. This is provided to reduce the load on the hoist 15.

The utility model discloses a theory of operation is:

as shown in fig. 10, the hydraulic cylinder 101 operates to tilt the boom bracket 1 and extend the boom bracket out of the pilot ship board, corresponding to the work boat, and the linear actuator 3 drives the inner boom 4 to move forward or backward according to the work boats of different sizes, so that the position of the hook 17 corresponds to the position of the hanging ring on the work boat, the work boat is hung by the hook 17 and the cable 16, the winch 15 operates to drive the cable 16 to be tightened, the work boat rises, the inner boom fixed pulley 9 automatically deflects, and the angle is adjusted so that the cable between the inner boom fixed pulley 9 and the hook 17 is in a linear shape.

As shown in fig. 11, the hydraulic cylinder 101 is pulled back to drive the cantilever support 1 to be in a vertical state, the work boat is pulled back to the upper side of the first fixed support platform 21, the first turnable support platform 22, the second turnable support platform 23 and the second fixed support platform 24, a proper support platform is selected according to different work boat lengths, and the winch 15 works to place the work boat on the support platform.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the spirit of the invention.

Claims

1. A multifunctional working boat hoisting operation platform comprises two opposite hoisting machines (20), wherein a first fixed supporting platform (21), a first turnable supporting platform (22), a second turnable supporting platform (23) and a second fixed supporting platform (24) are sequentially arranged between the two hoisting machines (20) from left to right, the bottoms of the two hoisting machines are fixedly connected with a pilot ship deck, the hoisting machine (20) is characterized by comprising a hoisting machine base (100) fixed on the pilot ship deck, a cantilever support (1) and a hydraulic oil cylinder (101) are hinged on the hoisting machine base (100), an output shaft of the hydraulic oil cylinder (101) is hinged with the cantilever support (1), a horizontally arranged telescopic boom structure is arranged on the cantilever support (1), and the telescopic boom structure can move forward or backward along the horizontal direction,

the upper surfaces of the first fixed supporting platform (21) and the second fixed supporting platform (24) are provided with a fixed supporting surface (25) in a V shape, the first turnable supporting platform (22) comprises two supporting platform connecting seats (26) which are arranged oppositely, and a turning oil cylinder (27) which is arranged between the two supporting platform connecting seats (26), the bottom of the turning support (28) is hinged with the two supporting platform connecting seats (26), and an output shaft of the turning oil cylinder (27) is connected with the turning support (28).

2. The multifunctional work boat hoisting work platform as claimed in claim 1, wherein the overturning bracket (28) comprises two overturning struts (29) corresponding to the supporting platform connecting seats (26) one by one, the two overturning struts (29) are fixedly connected through overturning connecting seats (30), the output shaft of the overturning oil cylinder (27) is hinged with the bottoms of the overturning connecting seats (30), the tops of the two overturning struts (29) are respectively provided with a supporting plate (31) which is arranged in an inclined manner, the included angle between the two supporting plates (31) is an obtuse angle, and each supporting plate (31) is provided with a rubber cushion plate (32).

3. The multifunctional work boat hoisting work platform of claim 2, wherein a positioning baffle (33) which is vertically arranged is arranged on one side of the support platform connecting seat (26) close to the overturning oil cylinder (27), a bolt hole (34) is arranged on one side of the support platform connecting seat (26) far away from the overturning oil cylinder (27), and the multifunctional work boat hoisting work platform further comprises an anti-overturning column (35), and when the overturning bracket (28) overturns under the action of the overturning oil cylinder (27), the position of the anti-overturning column (35) corresponds to the overturning connecting seat (30).

4. The multifunctional workboat hoisting operation platform as claimed in claim 1, wherein the telescopic boom structure comprises an outer boom (2) fixed on the boom support (1) and horizontally arranged, a linear driver (3) is fixed on the outer boom (2), an inner boom (4) is movably connected in the outer boom (2), an output shaft of the linear driver (3) is connected with the inner boom (4), an inner boom pulley block (5) is arranged at the end of the inner boom (4), and an outer boom pulley block (6) corresponding to the inner boom pulley block (5) is arranged at the bottom of the outer boom (2).

5. The multifunctional work boat hoisting work platform of claim 4, characterized in that the cross sections of the outer boom (2) and the inner boom (4) are respectively rectangular, the outer boom (2) is of a hollow structure, a slide rail groove (7) which is recessed towards the inside of the inner boom (4) is arranged on the outer wall of the inner boom (4), rollers corresponding to the slide rail groove (7) are arranged on the inner wall of the outer boom (2), the linear actuator (3) is fixed on the side wall of the inner boom (4), and the output shaft of the linear actuator (3) is connected with the side wall of the inner boom (4) through a corrugated pipe (18).

6. The multifunctional work boat hoisting work platform of claim 5, wherein the four side walls of the inner boom (4) are respectively provided with slide rail grooves (7), and the slide rail grooves (7) on each two opposite side walls have the same number and are in one-to-one correspondence in position.

7. The multifunctional work boat hoisting work platform of claim 6, characterized in that the inner boom pulley block (5) comprises an inner boom pulley support frame (8) arranged on the lower surface of the end part of the inner boom (4), and an inner boom fixed pulley (9) is rotatably connected to the inner boom pulley support frame (8).

8. The multifunctional work boat hoisting work platform of claim 7, characterized in that the inner boom pulley block (5) further comprises two opposite connecting lugs (10) fixed on the lower surface of the end of the inner boom (4), and the two ends of the inner boom pulley support frame (8) are respectively inserted into the two connecting lugs (10) and are rotatably connected with the connecting lugs (10).

9. The multifunctional work boat lifting work platform of claim 8, the outer boom pulley block (6) comprises a first outer boom pulley support frame (11) fixed on the lower surface of the outer boom (2) and a second outer boom pulley support frame (12) fixed on the side wall of the boom support (1), a first outer boom fixed pulley (13) and a second outer boom fixed pulley (14) are respectively and rotatably connected in the first outer boom pulley support frame (11) and the second outer boom pulley support frame (12), the planes of the first outer boom fixed pulley (13) and the second outer boom fixed pulley (14) are vertical to each other, and the first outer boom fixed pulley (13) is horizontally arranged, and the sliding groove heights of the inner boom fixed pulley (9) and the second outer boom fixed pulley (14) respectively correspond to the sliding groove height of the first outer boom fixed pulley (13).

10. The multifunctional work boat hoisting work platform of claim 9, wherein when the plane of the inner boom pulley support frame (8) is perpendicular to the horizontal plane, the planes of the inner boom fixed pulley (9), the first outer boom fixed pulley (13) and the second outer boom fixed pulley (14) are perpendicular to each other, respectively, the bottom of the cantilever support (1) is provided with a winch (15), a cable (16) on the winch (15) sequentially penetrates through the second outer boom fixed pulley (14), the first outer boom fixed pulley (13) and the inner boom fixed pulley (9), and the end of the cable (16) is provided with a hook (17).