CN116716854B - Combined water surface maintenance channel and installation method - Google Patents

Abstract

The utility model provides a combination formula surface of water maintenance passageway and installation method, it includes first inclined ladder, second inclined ladder, passageway, third inclined ladder and floating platform, the upper end of first inclined ladder is articulated with the arc door fixing base, the second inclined ladder upper end is articulated with the lower extreme of first inclined ladder, the second inclined ladder is laid to arc door department along the arc door support arm, the passageway is installed on the arc door, and be located one side of second inclined ladder lower extreme, the third inclined ladder is located the passageway and keeps away from one side of second inclined ladder, the slope installation that the third inclined ladder was folded along the arc door, third inclined ladder upper end is close to the passageway, the lower extreme downwardly extending, the floating platform is installed on the third inclined ladder, the floating platform slides along the third inclined ladder from top to bottom along the lift of water level. The whole walking process is converted into stair type steps from the surface of the arc-shaped door support arm, the walking safety of personnel is guaranteed, the floating platform floats up and down along with the water level, the boarding and disembarking safety of the personnel is guaranteed, and the boarding and disembarking safety of the personnel is improved through the overhaul channel.

Description

Combined water surface maintenance channel and installation method

Technical Field

The invention relates to the technical field of hydropower station overhaul and maintenance, in particular to a combined water surface overhaul channel and an installation method.

Background

The traditional overhaul channel mainly takes the upper surface of the arc-shaped door support arm as a main body, boarding and disembarking are needed to be completed through a fixed inclined ladder, however, the inclined angle of the inclined plane of the arc-shaped door support arm is larger, the section of the arc-shaped door support arm is an inclined plane, and the inclined plane of the support arm in rainy and snowy days is easy to slide under the wet skid foot; the arc-shaped door beam grid passing place is narrow in space, the corner movement is limited, the gravity center of a person is difficult to control, and the person has a large risk of sliding down and falling into water in the up-down process of the overhaul channel; the restriction of the inclined ladder is that a larger gap is arranged between the engineering ship and the inclined ladder when the engineering ship goes up and down, and a larger risk of falling into water exists in the process of people going up and down the ship. Aiming at the problems of the traditional overhaul channel, the invention needs to provide a combined water surface overhaul channel, which improves the safety of personnel going up and down the overhaul channel and going up and down the ship through the overhaul channel.

Disclosure of Invention

The invention aims to solve the technical problems that: the problems existing in the background technology are solved, and a combined water surface overhaul channel is provided, so that the safety of personnel on boarding and disembarking through the overhaul channel is improved.

The invention aims to solve the other technical problems that: the installation method of the combined water surface overhaul channel is used for realizing rapid installation and disassembly of the overhaul channel.

In order to achieve the technical characteristics, the aim of the invention is realized in the following way: a combination type water surface maintenance channel, which is characterized in that: the novel intelligent elevator comprises a first inclined ladder, a second inclined ladder, a passageway, a third inclined ladder and a floating platform, wherein the upper end of the first inclined ladder is hinged to an arc-shaped door fixing seat, the upper end of the second inclined ladder is hinged to the lower end of the first inclined ladder, the second inclined ladder is paved to an arc-shaped door along an arc-shaped door support arm, the passageway is arranged on the arc-shaped door and is positioned on one side of the lower end of the second inclined ladder, the third inclined ladder is positioned on one side of the passageway away from the second inclined ladder, the third inclined ladder is arranged in a folded manner along the arc-shaped door in an inclined manner, the upper end of the third inclined ladder is close to the passageway, the lower end of the third inclined ladder extends downwards, the floating platform is arranged on the third inclined ladder, and the floating platform slides up and down along with the lifting of the water level along the third inclined ladder.

The upper side both sides of first inclined ladder have set firmly the adapter sleeve respectively, and first handrail lower extreme cartridge is in the adapter sleeve, and the upper end both sides of first inclined ladder are equipped with the support respectively, and the support articulates with the free bearing that sets firmly on the arc door fixing base.

The second inclined ladder comprises an upper connecting bench and a plurality of middle connecting bench, the middle connecting bench is connected in sequence in a detachable mode, one middle connecting bench at the uppermost end is connected with the lower end of the upper connecting bench in a detachable mode, and the upper end of the upper connecting bench is hinged with the lower end of the first inclined ladder.

Still include bottom platform, bottom platform installs in one of lower extreme the below of intermediate junction bench, the width of marking time on the bottom platform is greater than the width of marking time of last junction bench and intermediate junction bench, and bottom platform's upper end both sides are equipped with the buckle respectively, and the buckle is used for with the floor joint on the arc door support arm.

The two sides of the upper connecting bench are respectively provided with a first baffle, the upper end of the upper connecting bench is provided with a connecting plate, the connecting plate is hinged with the lower end of the first inclined ladder, and the two sides of the lower end of the upper connecting bench are respectively provided with a first connecting sleeve; the two sides of the middle connecting bench are respectively provided with a second baffle, the two ends of the upper end of the middle connecting bench are respectively provided with a first latch, and the two sides of the lower end of the middle connecting bench are respectively provided with a second connecting sleeve.

The passageway includes the bottom plate, and the second handrail is installed to one side of bottom plate, and the bracing piece is installed to the downside that the bottom plate is located second handrail one end, and the downside of bottom plate is located the one end of keeping away from the bracing piece and has set firmly the link plate, and the passageway is hung through the link plate and is adorned in arc door support rib plate upper end, and the bracing piece supports and leans on the arc door support rib plate, one side of bottom plate is equipped with the extension board.

The upper end of third inclined ladder is equipped with the couple, and the bottom of third inclined ladder is equipped with a plurality of support piece, and the slide is installed respectively to the upside both sides of third inclined ladder, and the third handrail is installed to the upside of slide, the floating platform is connected with the slide of both sides.

The support piece comprises a connecting rod, the upper end of the connecting rod is connected with a third inclined ladder, and the lower end of the connecting rod is fixedly provided with a support seat.

The floating platform comprises a floating platform, an extension part is arranged on one side of the floating platform, sliding frames are respectively arranged on two sides of the extension part, two pulleys are respectively arranged on two sides of the sliding frames, a placing groove is formed in the bottom of the floating platform, and a floating plate is placed in the placing groove; the pulley comprises a base, a first roller is rotatably arranged on the base, second rollers are respectively arranged on two sides of the base, the first roller is arranged in parallel with the base, and the second roller is arranged perpendicular to the base; the slide way is of a groove structure, the notches of the slide ways at two sides are opposite, and pulleys at two sides of the sliding frame are respectively arranged in the slide ways at two sides.

The installation method adopting the combined water surface maintenance channel comprises the following steps of:

s1, installing a first inclined ladder; a support at the upper end of the first inclined ladder is hinged with a hinged support fixedly arranged on the arc-shaped door fixing seat, and personnel enter the arc-shaped door support arm through the first inclined ladder, wherein an upper connecting ladder section of the second inclined ladder is hinged with the lower end of the first inclined ladder in advance;

s2, installing a second inclined ladder; from the upper connecting bench, sequentially downwards laying and installing intermediate connecting bench, wherein one intermediate connecting bench at the uppermost end is spliced with the upper connecting bench, and the rest intermediate connecting bench is sequentially spliced and installed;

s3, installing a passageway; when the second inclined ladder is paved downwards to the arc-shaped door, the aisle is installed, the aisle is hung at the upper end of the arc-shaped door supporting rib plate through the hanging plate, and the inclined supporting rod is abutted against the arc-shaped door supporting rib plate;

s4, installing a third inclined ladder; a person enters an installation channel to install a third inclined ladder, the third inclined ladder is hooked at the upper end of the arc-shaped door supporting rib plate through a hook, and then the third inclined ladder is entered to fixedly connect the supporting piece with the arc-shaped door supporting rib plate through a bolt;

s5, installing a floating platform; after the floating platform is lifted, the floating platform faces downwards, pulleys on two sides of the sliding frame are respectively aligned with the upper ends of the sliding ways, and then the floating platform is gradually lowered until the floating platform floats on the water surface;

s6, when the disassembly is carried out, the disassembly is carried out sequentially according to the reverse steps.

The invention has the following beneficial effects:

1. the maintenance channel is of a combined structure, can be suitable for arc door support arms with different lengths and different conditions, converts the whole walking process from the surface of the arc door support arm into stair steps, ensures the walking safety of personnel, enables a floating platform to float up and down along with the water level, ensures the boarding and disembarking safety of the personnel, and improves the boarding and disembarking safety of the personnel through the maintenance channel.

2. Through the dismouting structure of combination formula, realize the quick installation and the dismantlement of maintenance passageway.

Drawings

Fig. 1 is a schematic view showing a front view of the present invention when it is mounted to an arc door.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic diagram of a front view structure of the present invention.

Fig. 4 is a schematic perspective view of a first ramp according to the present invention.

Fig. 5 is a schematic perspective view of the connecting ladder section of the present invention.

Fig. 6 is a schematic perspective view of the intermediate connecting ladder section of the present invention.

Fig. 7 is a schematic perspective view of the bottom platform of the present invention.

Fig. 8 is a schematic perspective view of the aisle of the present invention.

Fig. 9 is a schematic front view of a third ramp according to the present invention.

Fig. 10 is a schematic perspective view of a third ramp according to the present invention.

Fig. 11 is a schematic perspective view of a floating platform according to the present invention.

In the figure: the door comprises an arc door fixing seat 101, an arc door support arm 102, an arc door 103 and an arc door supporting rib plate 104;

the first inclined ladder 1, the connecting sleeve 11, the first handrail 12 and the support 13;

the second inclined ladder 2 is provided with an upper connecting ladder section 21, a first baffle 211, a connecting plate 212 and a first connecting sleeve 213; the middle connecting bench 22, the second baffle 221, the first latch 222, the second connecting sleeve 223, the bottom platform 23 and the buckle 231;

aisle 3, bottom plate 31, extension plate 311, hanging plate 32, diagonal bracing bar 33, second handrail 34;

the third inclined ladder 4, the hook 41, the supporting piece 42, the connecting rod 421, the supporting seat 422, the slideway 43 and the third handrail 44;

floating platform 5, floating platform 51, extension 52, pulley 53, base 531 first roller 532, second roller 533, placement groove 54, floating plate 55, carriage 56.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1-11, a combined water surface maintenance channel is characterized in that: the three-dimensional inclined ladder comprises a first inclined ladder 1, a second inclined ladder 2, a passageway 3, a third inclined ladder 4 and a floating platform 5, wherein the upper end of the first inclined ladder 1 is hinged with an arc-shaped door fixing seat 101, the upper end of the second inclined ladder 2 is hinged with the lower end of the first inclined ladder 1, the second inclined ladder 2 is paved to an arc-shaped door 103 along an arc-shaped door supporting arm 102, the passageway 3 is arranged on the arc-shaped door 103 and is positioned on one side of the lower end of the second inclined ladder 2, the third inclined ladder 4 is positioned on one side of the passageway 3 far away from the second inclined ladder 2, the third inclined ladder 4 is installed in a reverse-folded manner along the arc-shaped door 103, the upper end of the third inclined ladder 4 is close to the passageway 3, the lower end of the third inclined ladder extends downwards, the floating platform 5 is arranged on the third inclined ladder 4, and the floating platform 5 slides up and down along the third inclined ladder 4 along with the lifting of a water level. The maintenance channel is of a combined structure, can be suitable for arc door support arms with different lengths and different conditions, converts the whole walking process from the surface of the arc door support arm into stair steps, ensures the walking safety of personnel, ensures that the floating platform 5 floats up and down along with the water level, ensures the boarding and disembarking safety of the personnel, and improves the boarding and disembarking safety of the personnel through the maintenance channel.

Referring to fig. 4, connecting sleeves 11 are respectively and fixedly arranged on two sides of the upper side of the first inclined ladder 1, and the lower ends of the first armrests 12 are inserted into the connecting sleeves 11, so that the installation and the disassembly are convenient. The upper end both sides of first inclined ladder 1 are equipped with support 13 respectively, and support 13 is articulated with the free bearing that sets firmly on arc door fixing base 101, articulates with the free bearing through support 13, and first inclined ladder 1 can adapt to the different angles of arc door support arm.

Referring to fig. 3, the second inclined ladder 2 includes an upper connecting section 21 and a plurality of intermediate connecting sections 22, the plurality of intermediate connecting sections 22 are sequentially detachably connected, one intermediate connecting section 22 at the uppermost end is detachably connected with the lower end of the upper connecting section 21, and the upper end of the upper connecting section 21 is hinged with the lower end of the first inclined ladder 1. The upper connecting bench 21 is used for being hinged with the first inclined ladder 1, so that the second inclined ladder 2 can adapt to different angles of the arc-shaped door support arm, and the length of the arc-shaped door support arm is changed according to the length of the arc-shaped door support arm, so that the middle connecting bench 22 is increased and decreased, and the detachable connecting structure can be connected by bolts or in an inserting mode.

Referring to fig. 3 and 7, the device further comprises a bottom platform 23, the bottom platform 23 is mounted below the middle connecting bench 22 at the lowest end, the tread width on the bottom platform 23 is larger than the tread widths of the upper connecting bench 21 and the middle connecting bench 22, two sides of the upper end of the bottom platform 23 are respectively provided with a buckle 231, and the buckle 231 is used for being clamped with rib plates on the arc-shaped door support arm 102. The bottom platform 23 provides a larger standing area for ease of personnel traffic steering.

Referring to fig. 5, first baffles 211 are respectively arranged at two sides of the upper connecting bench 21, a connecting plate 212 is arranged at the upper end of the upper connecting bench 21, the connecting plate 212 is hinged with the lower end of the first inclined ladder 1, and first connecting sleeves 213 are respectively arranged at two sides of the lower end of the upper connecting bench 21; the two sides of the middle connecting bench 22 are respectively provided with a second baffle 221, the two ends of the upper end of the middle connecting bench 22 are respectively provided with a first latch 222, and the two sides of the lower end are respectively provided with a second connecting sleeve 223. The structure is simple, the first bolt 222 and the second connecting sleeve 223 are matched and connected in a plug-in manner, and the installation and the disassembly are convenient. When in use, the upper end of the upper connecting bench 21 is hinged with the first inclined ladder 1, then one middle connecting bench 22 is taken, the first bolt 222 of the middle connecting bench 22 is inserted into the first connecting sleeve 213 of the upper connecting bench 21, the first middle connecting bench 22 is installed, the rest middle connecting bench 22 is installed in sequence, and the first bolt 222 of the adjacent middle connecting bench 22 is inserted into the second connecting sleeve 223.

Referring to fig. 8, the aisle 3 includes a bottom plate 31, a second handrail 34 is installed at one side of the bottom plate 31, a diagonal support bar 33 is installed at the lower side of the bottom plate 31 located at one end of the second handrail 34, and a hanging plate 32 is fixedly installed at the lower side of the bottom plate 31 located at one end far from the diagonal support bar 33. The aisle 3 is hung at the upper end of the arc-shaped door supporting rib plate 104 through the hanging plate 32, and the inclined supporting rod 33 is abutted against the arc-shaped door supporting rib plate 104, so that the installation and the disassembly are convenient. One side of the bottom plate 31 is provided with an extension plate 311, and the extension plate 311 is used for reducing a gap between the extension plate and the inclined ladder at two sides. The bottom plate 31 is provided with a notch 35 for avoiding the structure on the arc door.

Referring to fig. 9 and 10, a hook 41 is arranged at the upper end of the third inclined ladder 4, a plurality of supporting pieces 42 are arranged at the bottom of the third inclined ladder 4, sliding ways 43 are respectively arranged at two sides of the upper side of the third inclined ladder 4, a third handrail 44 is arranged at the upper side of the sliding ways 43, and the floating platform 5 is connected with the sliding ways 43 at two sides. The third inclined ladder is hooked on the arc-shaped door plate through the hooks 41, so that the third inclined ladder is attached to the arc-shaped door supporting rib plate 104, and the third inclined ladder is supported and installed conveniently through the supporting piece 42. Since the arcuate door support rib 104 is not flat, the height of the support member 42 is matched to the arcuate door support rib 104.

Further, the supporting member 42 includes a connecting rod 421, the upper end of the connecting rod 421 is connected with the third inclined ladder 4, and a supporting seat 422 is fixed at the lower end of the connecting rod 421. When in use, the bolt 423 passes through the supporting seat 422 and the arc-shaped door supporting rib plate 104 and then is connected with the nut plate 424 to fix the supporting piece 42, thereby stabilizing the third inclined ladder 4 on the arc-shaped door, and ensuring safer passing.

Referring to fig. 11, the floating platform 5 includes a floating platform 51, an extension part 52 is provided on one side of the floating platform 51, sliding frames 56 are provided on two sides of the extension part 52, two pulleys 53 are provided on two sides of the sliding frames 56, a placement groove 54 is provided at the bottom of the floating platform 51, and a floating plate 55 is placed in the placement groove 54; the pulley 53 comprises a base 531, a first roller 532 is rotatably arranged on the base 531, second rollers 533 are respectively arranged on two sides of the base 531, the first roller 532 is parallel to the base 531, and the second roller 533 is perpendicular to the base 531; the slide way 43 is of a groove structure, the notches of the slide ways 43 at two sides are opposite, and the pulleys 53 at two sides of the sliding frame 56 are respectively arranged in the slide ways 43 at two sides. The floating platform 5 floats up and down through the slide way 43, so that personnel can conveniently climb a ship through the floating platform 5.

Embodiment two:

the installation method adopting the combined water surface maintenance channel comprises the following steps of:

s1, installing a first inclined ladder 1; the support 13 at the upper end of the first inclined ladder 1 is hinged with a hinged support fixedly arranged on the arc-shaped door fixing seat 101, and personnel enter the arc-shaped door support arm 102 through the first inclined ladder 1, wherein the upper connecting ladder section 21 of the second inclined ladder 2 is hinged with the lower end of the first inclined ladder 1 in advance.

S2, installing a second inclined ladder 2; from the upper connecting bench 21, the middle connecting bench 22 is paved and installed downwards in sequence, wherein one middle connecting bench 22 at the uppermost end is spliced with the upper connecting bench 21, and the rest middle connecting benches 22 are spliced and installed in sequence. Specifically, the first latch 222 of the uppermost intermediate connecting section 22 is inserted into the first connecting sleeve 213 of the upper connecting section 21, the first intermediate connecting section 22 is installed, the remaining intermediate connecting sections 22 are installed in sequence, and the first latch 222 of the adjacent intermediate connecting section 22 is inserted into the second connecting sleeve 223.

S3, installing a passageway 3; when the second inclined ladder 2 is paved downwards to the arc-shaped door 103, the aisle 3 is installed, the aisle 3 is hung at the upper end of the arc-shaped door supporting rib plate 104 through the hanging plate 32, and the inclined support rods 33 are abutted against the arc-shaped door supporting rib plate 104.

S4, installing a third inclined ladder 4; the person enters the installation passageway 3 to install the third inclined ladder 4, firstly, the third inclined ladder 4 is hooked at the upper end of the arc-shaped door supporting rib plate 104 through the hook 41, and then the person enters the third inclined ladder 4 to fixedly connect the supporting piece 42 with the arc-shaped door supporting rib plate 104 through the bolt.

S5, installing a floating platform 5; after the floating platform 5 is lifted, the floating platform 51 is made to face downwards, the pulleys 53 on both sides of the sliding frame 56 are aligned with the upper ends of the sliding ways 43 respectively, and the floating platform 5 is gradually lowered until the floating platform 5 floats on the water surface.

Personnel pass through the first inclined ladder (1), the second inclined ladder (2), the passageway (3), the third inclined ladder (4) and the floating platform (5) and get on and off the ship.

S6, when the disassembly is carried out, the disassembly is carried out sequentially according to the reverse steps.

Claims (5)

1. A combination type water surface maintenance channel, which is characterized in that: the three-dimensional floating platform comprises a first inclined ladder (1), a second inclined ladder (2), a passageway (3), a third inclined ladder (4) and a floating platform (5), wherein the upper end of the first inclined ladder (1) is hinged with an arc-shaped door fixing seat (101), the upper end of the second inclined ladder (2) is hinged with the lower end of the first inclined ladder (1), the second inclined ladder (2) is paved to an arc-shaped door (103) along an arc-shaped door support arm (102), the passageway (3) is arranged on the arc-shaped door (103) and is positioned on one side of the lower end of the second inclined ladder (2), the third inclined ladder (4) is positioned on one side, far away from the second inclined ladder (2), of the passageway (3), the third inclined ladder (4) is installed in a backward manner along the arc-shaped door (103), the upper end of the third inclined ladder (4) is close to the passageway (3), the lower end of the floating platform (5) extends downwards, and the floating platform (5) slides up and down along the third inclined ladder (4);

connecting sleeves (11) are respectively and fixedly arranged at two sides of the upper side of the first inclined ladder (1), the lower ends of first handrails (12) are inserted into the connecting sleeves (11), supports (13) are respectively arranged at two sides of the upper end of the first inclined ladder (1), and the supports (13) are hinged with hinged supports fixedly arranged on the arc-shaped door fixing seats (101);

the second inclined ladder (2) comprises an upper connecting ladder section (21) and a plurality of middle connecting ladder sections (22), the middle connecting ladder sections (22) are sequentially and detachably connected, one middle connecting ladder section (22) at the uppermost end is detachably connected with the lower end of the upper connecting ladder section (21), and the upper end of the upper connecting ladder section (21) is hinged with the lower end of the first inclined ladder (1);

the aisle (3) comprises a bottom plate (31), a second handrail (34) is arranged on one side of the bottom plate (31), a diagonal bracing rod (33) is arranged on the lower side of one end of the bottom plate (31), a hanging plate (32) is fixedly arranged on the lower side of the bottom plate (31) at one end far away from the diagonal bracing rod (33), the aisle (3) is hung at the upper end of an arc-shaped door supporting rib plate (104) through the hanging plate (32), the diagonal bracing rod (33) abuts against the arc-shaped door supporting rib plate (104), and an extension plate (311) is arranged on one side of the bottom plate (31);

the upper end of the third inclined ladder (4) is provided with a hook (41), the bottom of the third inclined ladder (4) is provided with a plurality of supporting pieces (42), two sides of the upper side of the third inclined ladder (4) are respectively provided with a slide rail (43), the upper side of the slide rail (43) is provided with a third handrail (44), and the floating platform (5) is connected with the slide rails (43) on the two sides;

the floating platform (5) comprises a floating platform (51), an extension part (52) is arranged on one side of the floating platform (51), sliding frames (56) are respectively arranged on two sides of the extension part (52), two pulleys (53) are respectively arranged on two sides of the sliding frames (56), a placing groove (54) is formed in the bottom of the floating platform (51), and a floating plate (55) is placed in the placing groove (54); the pulley (53) comprises a base (531), a first roller (532) is rotatably arranged on the base (531), second rollers (533) are respectively arranged on two sides of the base (531), the first roller (532) is arranged in parallel with the base (531), and the second roller (533) is arranged perpendicular to the base (531); the sliding rail (43) is of a groove type structure, the notches of the sliding rails (43) on two sides are opposite, and pulleys (53) on two sides of the sliding frame (56) are respectively arranged in the sliding rails (43) on two sides.

2. A modular surface access tunnel according to claim 1, wherein: still include bottom platform (23), bottom platform (23) install in one of lower extreme the below of intermediate junction bench (22), the width of marking time on bottom platform (23) is greater than the width of marking time of last junction bench (21) and intermediate junction bench (22), and the upper end both sides of bottom platform (23) are equipped with buckle (231) respectively, and buckle (231) are used for with the floor joint on arc door support arm (102).

3. A modular surface access tunnel according to claim 1, wherein: the two sides of the upper connecting bench (21) are respectively provided with a first baffle (211), the upper end of the upper connecting bench (21) is provided with a connecting plate (212), the connecting plate (212) is hinged with the lower end of the first inclined ladder (1), and the two sides of the lower end of the upper connecting bench (21) are respectively provided with a first connecting sleeve (213); second baffle plates (221) are respectively arranged on two sides of the middle connecting bench (22), first inserting bolts (222) are respectively arranged on two sides of the upper end of the middle connecting bench (22), and second connecting sleeves (223) are respectively arranged on two sides of the lower end of the middle connecting bench.

4. A modular surface access tunnel according to claim 1, wherein: the support piece (42) comprises a connecting rod (421), the upper end of the connecting rod (421) is connected with the third inclined ladder (4), and the lower end of the connecting rod (421) is fixedly provided with a support seat (422).

5. A method of installing a modular surface access tunnel according to any one of claims 1 to 4, comprising the steps of:

s1, installing a first inclined ladder (1); a support (13) at the upper end of a first inclined ladder (1) is hinged with a hinged support fixedly arranged on an arc-shaped door fixing seat (101), and personnel enter an arc-shaped door support arm (102) through the first inclined ladder (1), wherein an upper connecting ladder section (21) of a second inclined ladder (2) is hinged with the lower end of the first inclined ladder (1) in advance;

s2, installing a second inclined ladder (2); from the upper connecting bench (21), sequentially downwards laying and installing intermediate connecting bench (22), wherein one intermediate connecting bench (22) at the uppermost end is spliced with the upper connecting bench (21), and the rest intermediate connecting bench (22) is sequentially spliced and installed;

s3, installing a passageway (3); when the second inclined ladder (2) is paved downwards at the arc-shaped door (103), the aisle (3) is installed, the aisle (3) is hung at the upper end of the arc-shaped door supporting rib plate (104) through the hanging plate (32), and the inclined support rod (33) is abutted against the arc-shaped door supporting rib plate (104);

s4, installing a third inclined ladder (4); a person enters the installation aisle (3) to install a third inclined ladder (4), the third inclined ladder (4) is hooked at the upper end of the arc-shaped door supporting rib plate (104) through a hook (41), and then the third inclined ladder (4) is entered to fixedly connect the supporting piece (42) with the arc-shaped door supporting rib plate (104) through bolts;

s5, installing a floating platform (5); after the floating platform (5) is lifted, the floating platform (51) faces downwards, pulleys (53) on two sides of the sliding frame (56) are respectively aligned with the upper ends of the sliding ways (43), and then the floating platform (5) is gradually lowered until the floating platform (5) floats on the water surface;

s6, when the disassembly is carried out, the disassembly is carried out sequentially according to the reverse steps.