Method for installing tail sliding small boat idler wheels in dock stage

Abstract

The invention discloses a method for installing a tail-sliding small boat roller at a dock stage, which is characterized in that the tail-sliding small boat roller originally installed at a mooring test stage is advanced to the dock stage to be installed, and the original water-facing operation is changed into ground operation, so that the safety risk caused by the water-facing effect is effectively solved, and the service life of the tail-sliding small boat is prolonged. Ground operation is carried out in the dock stage, a simulated small boat does not need to be manufactured, the risk of toppling of the simulated small boat does not exist, only one bilge auxiliary installation tool needs to be manufactured to install the bilge inclined roller, the horizontal roller can be installed according to the marking position of the center line of the tail gate, the installation period can be greatly shortened, the period length is fixed and controllable, and the installation efficiency is improved. And meanwhile, the labor intensity is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of installation of a stern-slip boat roller, and in particular to a method for installing a stern-slip boat roller in a dock stage. Background Art

[0002] Stern slide boats are also called stern slide ship-borne boats. They are mainly used in marine operations and rescue, and have high requirements for efficiency, safety, and rapid response. With the development and progress of ship technology, stern slide boats are widely used in various types of ships.

[0003] Traditional ships usually use cranes and lifeboat launching and retrieving devices to launch and retrieve small boats, but these methods have significant defects such as complex operation, slow launch and recovery, poor safety, and weak wind and wave resistance. To overcome these shortcomings, the tail-slip small boat launching and retrieving system came into being.

[0004] The stern-slip boat retracting and launching system is usually arranged on the slideway at the stern of the ship, and the retracting and launching device is used to enable the stern-slip boat to quickly and safely enter and exit the cabin. The prior art usually uses a simulated boat to install the slideway bilge roller, that is, during the mooring test phase, the simulated boat is hoisted onto the ship and installed on the slideway. The installation position of the simulated boat is the same as the position of the real stern-slip boat installed on the actual ship. Then, the roller group is installed based on the simulated boat. Since the construction node of this installation method is already the mooring test phase and the ship has been launched, this installation operation is a water-based operation, which is difficult to operate and has certain safety hazards. In addition, the stern-slip boat occupies most of the space and position, making the construction very inconvenient. Summary of the invention

[0005] In view of this, the present invention provides a method for installing a stern-slip boat roller in a dock stage, so as to solve the problems existing in the above-mentioned background technology.

[0006] A method for installing a tail-slip boat roller in a dock stage, specifically comprising the following steps:

[0007] S1, docking stage, the stern sliding door is placed on the ground and adjusted to reflect its open state after installation on the ship;

[0008] S2, draw the center line of the tailgate on the surface of the tailgate;

[0009] S3, according to the installation position required by the roller installation drawing, install multiple horizontal rollers at equal intervals in the slideway of the tailgate along the center line of the tailgate, the first horizontal roller is set at a position 150±2mm away from the rear cover plate of the tailgate, and at the same time, a guide roller is installed on the rear cover plate of the tailgate;

[0010] S4, using the installed horizontal roller as a reference, install the bilge inclined roller between the front and rear horizontal rollers using the bilge auxiliary installation tooling;

[0011] The bilge auxiliary installation tool comprises a template for simulating the outer plate line of the tail slide type ship-borne small boat, and an adjustment base fixed at the bottom of the template for adjusting the upper and lower height positions of the template;

[0012] S5, install hinges on the front cover plate of the rear sliding door, and install lifting rings on the rear cover plate of the rear sliding door;

[0013] S6, using a lifting device to turn the stern sliding door over 90 degrees, so that its stern sealing plate faces upward and its bow sealing plate faces downward, and then hoisting it onto the ship in a vertical state, and fixing the hinge on the bow sealing plate of the stern sliding door with the hinge on the stern sealing plate of the hull structure;

[0014] S7, using the lifting equipment to open the stern sliding door, and then installing the horizontal roller and the bilge inclined roller on the hull slideway in the same manner as the horizontal roller and the bilge inclined roller on the stern sliding door;

[0015] S8, after the ship is launched, after the tail slide type ship-borne boat is installed on the hull slide, a bow inclined roller is installed at the bow of the hull slide.

[0016] Preferably, the specific steps of placing the tailgate on the ground and adjusting the level in step S1 are:

[0017] Place the tailgate flat on the ground through the support structure;

[0018] Select multiple measuring points on the bottom surface of the slideway of the tail sliding door, use a total station or a level ruler to measure the horizontality of each measuring point, and adjust the tail sliding door according to the measurement results so that the bottom surface of its slideway is level.

[0019] Preferably, in step S3, after the horizontal rollers are installed, the roller centers of all the horizontal rollers need to be located at the same height, and the line connecting the roller centers of all the horizontal rollers is aligned with the center line of the tailgate up and down.

[0020] Preferably, the distance from the upper wheel surface of the horizontal roller to the bottom surface of the slideway of the tail sliding door is 200±2 mm.

[0021] Preferably, the specific steps of installing the bilge inclined roller between the front and rear horizontal rollers using the bilge auxiliary installation tool in step S4 are:

[0022] According to the installation position of the bilge inclined roller in the construction drawing, fix the bilge auxiliary installation tooling at the corresponding position on the bottom surface of the slideway between the front and rear horizontal rollers;

[0023] Adjust the template height through the adjustment base of the auxiliary installation tooling of the bilge, so that the bottom surface of the template is flush with the upper wheel surface of the horizontal roller;

[0024] Then, according to the distance between the inclined surface of the slideway of the tail sliding door and the linear inclined edge of the template, the reserved margin of the roller bracket of the bilge inclined roller is cut;

[0025] Then, install the bilge inclined roller after the excess is cut onto the inclined surface of the slideway of the tail sliding door.

[0026] Preferably, the adjustment bases are provided in plurality, and the plurality of adjustment bases are symmetrically fixed at the bottom of the template, and each adjustment base comprises a base plate, a fixed connection seat, and adjustment bolts respectively connected to the base plate and the fixed connection seat, and the fixed connection seat is fixed to the template by a fastening bolt.

[0027] Preferably, the template is a wooden board, and the contour lines of both sides of the template are the same as the outer plate lines of the tail slide type ship-borne boat.

[0028] Preferably, the bilge inclined roller refers to an inclined roller in contact with the middle and tail of the stern slide type ship-borne boat, and the bow inclined roller refers to an inclined roller in contact with the bow of the stern slide type ship-borne boat.

[0029] Preferably, in step S7, the specific steps of opening the tail sliding door to a horizontal level by using the lifting equipment are:

[0030] Fix the lifting lugs on the reverse side of the main deck of the hull;

[0031] Fix one end of the chain hoist to the lifting lug on the back of the main deck and the other end to the lifting ring on the rear cover of the rear sliding door. After the chain hoist is fixed, unhook the lifting hook of the lifting equipment;

[0032] Use a hand winch to open the tail sliding door until the bottom surface of its slide is horizontal.

[0033] The beneficial effects of the present invention are:

[0034] 1. The present invention advances the installation of the stern-slip boat pulley originally installed in the mooring test stage to the dock stage, and changes the original water-side operation into ground operation, which effectively solves the safety risks faced by the water-side operation. In addition, the ground operation is carried out in the dock stage, and there is no need to make a simulated boat, and there is no risk of the simulated boat tipping over. It only needs to make a bilge auxiliary installation tool to install the bilge inclined roller, and the horizontal roller can be installed according to the marked position of the center line of the stern gate, which can greatly shorten the installation period, and the period length is fixed and controllable, and the labor intensity is also reduced.

[0035] 2. The method of the present invention is not limited by the size of the site when installing the roller, and the auxiliary installation tooling of the bilge is simple in structure and easy to use and operate. While ensuring the installation accuracy of the roller, the installation efficiency of the roller can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a side view of the tailgate supported on the ground.

[0038] Figure 2 It is a schematic diagram of the end face of installing the horizontal roller on the tail sliding door.

[0039] Figure 3 It is a schematic diagram of the end face of installing the bilge inclined roller using the bilge auxiliary installation tooling.

[0040] Figure 4 It is a structural diagram of the bilge auxiliary installation tooling.

[0041] Figure 5 This is a schematic diagram showing that all rollers have been installed after the stern sliding door is on board.

[0042] The meanings of the numbers in the figure are:

[0043] 1 is a supporting structure, 2 is a stern sliding door, 3 is a bottom surface of a slideway of the stern sliding door, 4 is an inclined surface of a slideway of the stern sliding door, 5 is a cushion block, 6 is a center line of the stern door, 7 is a horizontal roller on the stern sliding door, 8 is a guide roller, 9 is an inclined bilge roller on the stern sliding door, 10 is a template, 11 is a bottom plate, 12 is a fixed connection seat, 13 is an adjusting bolt, 14 is a hinge, 15 is a lifting ring, 16 is a bow sealing plate of the stern sliding door, 17 is a stern sealing plate of the stern sliding door, 18 is a horizontal roller on a hull slideway, 19 is an inclined bilge roller on a hull slideway, and 20 is a bow inclined roller. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0045] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0046] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0047] The present invention provides a method for installing a tail-slip boat roller in a dock stage, which specifically comprises the following steps:

[0048] S1, docking stage, the stern sliding door is placed on the ground and adjusted to the level to reflect the open state after actual ship installation.

[0049] Specifically, first, Figure 1 As shown, the tail sliding door 2 is placed on a flat ground through a supporting structure 1, and the supporting structure can be a supporting platform, a pier, etc.;

[0050] Then, multiple measuring points are selected on the slide bottom surface 3 of the tail sliding door 2. The measuring points can be selected at the four corners of the slide bottom surface 3, and the levelness of each measuring point is measured respectively by a total station or a spirit level; when using a total station for measurement, the three-dimensional coordinates of each measuring point are measured respectively by the total station, and the levelness of the tail sliding door 2 is adjusted according to the three-dimensional coordinates of each measuring point, that is, the levelness is adjusted by inserting a pad 5 between the supporting structure 1 and the tail sliding door 2; when using a spirit level for measurement, the spirit level is placed at each measuring point respectively, and then the levelness is adjusted by inserting a pad 5 between the supporting structure 1 and the tail sliding door 2, so that the slide bottom surface 3 is horizontal.

[0051] The horizontal deviation of the bottom surface 3 of the slideway of the tail sliding door does not exceed ±2mm.

[0052] It should be noted that when the tailgate 2 is directly placed flat on the ground, the bottom surface 3 of the slideway is inclined and not in a horizontal state, so the bottom surface 3 of the slideway needs to be adjusted to a horizontal state before installing the rollers.

[0053] S2, draw the center line of the tailgate on the surface of the tailgate 2.

[0054] S3. According to the installation position required by the roller installation drawing, multiple horizontal rollers 7 are installed at equal intervals in the slideway of the tailgate 2 along the tailgate centerline 6. The first horizontal roller is set at a position 150±2mm away from the rear cover plate of the tailgate. After all the horizontal rollers 7 are installed, the roller centers of all the horizontal rollers 7 must be located at the same height, and the connecting line of the roller centers of all the horizontal rollers 7 is aligned with the upper and lower sides of the tailgate centerline 6, that is, all the horizontal rollers 7 are located on the tailgate centerline 6 and are set at the same height.

[0055] At the same time, a guide roller 8 is installed on the rear sealing plate of the rear sliding door.

[0056] After all the horizontal rollers 7 are installed, the distance from the upper wheel surfaces of all the horizontal rollers 7 to the bottom surface 3 of the slideway of the rear sliding door is 200±2 mm.

[0057] S4, using the installed horizontal roller as a reference, using the bilge auxiliary installation tool to install the bilge inclined roller 9 between the front and rear horizontal rollers 7.

[0058] The bilge auxiliary installation tool comprises a template 10 for simulating the outer plate line of a tail slide type ship-borne boat, and an adjustment base fixed at the bottom of the template 10 for adjusting the upper and lower height positions of the template 10.

[0059] There are multiple adjustment bases, which are symmetrically fixed at the bottom of the template. Each adjustment base includes a base plate 11, a fixed connection seat 12, and adjustment bolts 13 respectively connected to the base plate 11 and the fixed connection seat 12. The fixed connection seat 12 is fixed to the template 10 by fastening bolts.

[0060] The fixed connection seat 12 mainly plays a connecting and supporting role, and it can be set into various structural forms. In this embodiment, the fixed connection seat 12 is set into an L-shaped structure, which is composed of a vertically arranged angle steel and a horizontal steel plate fixed to the bottom of the angle steel. The upper part of the angle steel is fixed to the template by fastening bolts, and the bottom of the angle steel is welded and fixed to the horizontal steel plate. The horizontal steel plate is connected to the bottom plate by adjusting bolts. By adjusting the adjusting bolts, the upper and lower positions of the template can be adjusted.

[0061] In this embodiment, the template 10 is a wooden board, and the contour lines of both sides of the template 10 are the same as the outer plate lines of the tail slide type ship-borne boat.

[0062] When installing the bilge inclined roller 9 between the front and rear horizontal rollers 7 using the bilge auxiliary installation tool, first, according to the to-be-installed position of the bilge inclined roller 9 in the construction drawing, fix the bilge auxiliary installation tool at the corresponding position on the bottom surface of the slideway between the front and rear horizontal rollers 7;

[0063] Then, adjust the height of the template 10 through the adjustment base of the auxiliary installation tool of the bilge, so that the bottom surface of the template 10 is flush with the upper wheel surface of the horizontal roller 7;

[0064] Then, according to the distance between the inclined surface 4 of the slideway of the tail sliding door and the linear bevel of the template 10, the reserved margin on the roller bracket of the bilge inclined roller 9 is cut to a margin, that is, the size of the bilge inclined roller 9 after the margin cutting should be able to adapt to the distance between the inclined surface of the slideway of the tail sliding door and the linear bevel of the template, so as to ensure that the wheel surface of the roller can contact the linear bevel of the template after the bilge inclined roller 9 is installed on the inclined surface of the slideway of the tail sliding door;

[0065] Finally, the bilge inclined roller 9 after the excess is cut is installed on the inclined surface of the slideway of the tail sliding door.

[0066] According to the above installation steps, install the bilge inclined rollers at various positions in sequence.

[0067] It should be noted that the bilge inclined roller 9 installed between the front and rear horizontal rollers 7 is a group of two rollers, and the two bilge inclined rollers 9 are symmetrically arranged relative to the center line 6 of the tailgate. A total of multiple groups of bilge inclined rollers 9 are arranged on the entire tailgate along the center line 6 of the tailgate. The multiple groups of bilge inclined rollers 9 are parallel to each other, and the left and right bilge inclined rollers 9 in each group are symmetrically arranged relative to the center line 6 of the tailgate.

[0068] S5, installing the hinge 14 on the front cover plate 16 of the rear sliding door, and installing the lifting ring 15 on the rear cover plate 17 of the rear sliding door.

[0069] S6, use a lifting device (such as a crane) to turn the rear sliding door 2 over 90 degrees (i.e., from a horizontal state to a vertical state, to a standing state), so that its rear sealing plate 17 faces upward and the bow sealing plate 16 faces downward, and then hoist it onto the ship in a standing state, and fix the hinge on the bow sealing plate 16 of the rear sliding door to the hinge on the rear sealing plate of the hull structure.

[0070] The hinge on the stern seal plate of the hull structure can be installed on the hull structure in advance.

[0071] After the hinge on the front sealing plate 16 of the tail sliding door is fixed with the hinge on the tail sealing plate of the hull structure, the hook of the crane cannot be unhooked at this time, and it is necessary to wait until the subsequent hand chain hoist is installed before unhooking.

[0072] S7, fix the lifting lug on the back side of the main deck of the hull, then fix one end of the hand chain hoist on the lifting lug on the back side of the main deck and the other end on the lifting ring 15 of the rear cover plate 17 of the rear sliding door. After the hand chain hoist is fixed, the lifting hook of the lifting equipment is unhooked;

[0073] Then, use a hand winch to open the tail slide door until the inclination angle of the bottom surface of its slide is equal to the angle of the hull slide.

[0074] Then, the horizontal roller 18 and the bilge inclined roller 19 are installed on the hull slideway according to the same installation method as the horizontal roller 7 and the bilge inclined roller 9 on the stern sliding door, that is, the installation method and installation standard of the horizontal roller 18 on the hull slideway are the same as the installation method and installation standard of the horizontal roller 7 in the stern sliding door slideway in step S3, and the installation method and installation standard of the bilge inclined roller 19 in the hull slideway are the same as the installation method and installation standard of the bilge inclined roller 9 in the stern sliding door slideway in step S4.

[0075] The bilge inclined rollers in the stern slideway and the bilge inclined rollers in the hull slideway refer to the inclined rollers that contact the middle and stern of the stern slideway type ship-borne boat, and the line shapes of the middle and stern of the boat are basically the same.

[0076] The inclined roller dock stage that contacts the bow of the stern slide type ship-borne boat will not be installed yet.

[0077] S8, after the ship is launched, after the installation and commissioning of the ship's electrical system is completed, the opening and closing commissioning of the tail sliding door is completed, and the tail slide type ship-borne boat is installed on the hull slide, the bow inclined roller 20 is installed at the bow of the hull slide.

[0078] The bow inclined roller 20 refers to an inclined roller in contact with the bow of the stern slide type ship-borne boat.

[0079] The tail slide type ship-borne boat is towed and installed on the hull slide by a winch.

[0080] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A method for installing a tail-slip boat roller in a dock stage, characterized in that: The specific steps include: S1, docking stage, the stern sliding door is placed on the ground and adjusted to reflect its open state after installation on the ship; S2, draw the center line of the tailgate on the surface of the tailgate; S3, according to the installation position required by the roller installation drawing, install multiple horizontal rollers at equal intervals in the slideway of the tailgate along the center line of the tailgate, the first horizontal roller is set at a position 150±2mm away from the rear cover plate of the tailgate, and at the same time, a guide roller is installed on the rear cover plate of the tailgate; S4, using the installed horizontal roller as a reference, install the bilge inclined roller between the front and rear horizontal rollers using the bilge auxiliary installation tooling; The bilge auxiliary installation tool comprises a template for simulating the outer plate line of the tail slide type ship-borne small boat, and an adjustment base fixed at the bottom of the template for adjusting the upper and lower height positions of the template; S5, install hinges on the front cover plate of the rear sliding door, and install lifting rings on the rear cover plate of the rear sliding door; S6, using a lifting device to turn the stern sliding door over 90 degrees, so that its stern sealing plate faces upward and its bow sealing plate faces downward, and then hoisting it onto the ship in a vertical state, and fixing the hinge on the bow sealing plate of the stern sliding door with the hinge on the stern sealing plate of the hull structure; S7, using the lifting equipment to open the stern sliding door, and then installing the horizontal roller and the bilge inclined roller on the hull slideway in the same manner as the horizontal roller and the bilge inclined roller on the stern sliding door; S8, after the ship is launched, after the tail slide type ship-borne boat is installed on the hull slide, a bow inclined roller is installed at the bow of the hull slide.

2. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: The specific steps of placing the tailgate on the ground and adjusting the level in step S1 are as follows: Place the tailgate flat on the ground through the support structure; Select multiple measuring points on the bottom surface of the slideway of the tail sliding door, use a total station or a level ruler to measure the horizontality of each measuring point, and adjust the tail sliding door according to the measurement results so that the bottom surface of its slideway is level.

3. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: In step S3, after the horizontal rollers are installed, the roller centers of all the horizontal rollers must be located at the same height, and the line connecting the roller centers of all the horizontal rollers is aligned with the center line of the tailgate up and down.

4. The method for installing a stern-slip boat roller in a docking stage according to claim 3, characterized in that: The distance from the upper wheel surface of the horizontal roller to the bottom surface of the slideway of the tail sliding door is 200±2mm.

5. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: The specific steps of installing the bilge inclined roller between the front and rear horizontal rollers using the bilge auxiliary installation tool in step S4 are: According to the installation position of the bilge inclined roller in the construction drawing, fix the bilge auxiliary installation tooling at the corresponding position on the bottom surface of the slideway between the front and rear horizontal rollers; Adjust the template height through the adjustment base of the auxiliary installation tooling of the bilge, so that the bottom surface of the template is flush with the upper wheel surface of the horizontal roller; Then, according to the distance between the inclined surface of the slideway of the tail sliding door and the linear inclined edge of the template, the reserved margin of the roller bracket of the bilge inclined roller is cut; Then, install the bilge inclined roller after the excess is cut onto the inclined surface of the slideway of the tail sliding door.

6. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: There are multiple adjustment bases, which are symmetrically fixed on the bottom of the template. Each adjustment base includes a base plate, a fixed connection seat, and adjustment bolts respectively connected to the base plate and the fixed connection seat. The fixed connection seat is fixed to the template by fastening bolts.

7. The method for installing a stern-slip boat roller in a dock phase according to claim 6, characterized in that: The template is a wooden board, and the contour lines of both sides of the template are the same as the outer plate lines of the tail slide type ship-borne boat.

8. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: The bilge inclined roller refers to an inclined roller in contact with the middle and tail of the stern slide type ship-borne boat, and the bow inclined roller refers to an inclined roller in contact with the bow of the stern slide type ship-borne boat.

9. The method for installing a stern-slip boat roller in a dock phase according to claim 1, characterized in that: In step S7, the specific steps of using the lifting equipment to open the tail sliding door to a horizontal level are: Fix the lifting lugs on the reverse side of the main deck of the hull; Fix one end of the chain hoist to the lifting lug on the back of the main deck and the other end to the lifting ring on the rear cover of the rear sliding door. After the chain hoist is fixed, unhook the lifting hook of the lifting equipment; Use a hand winch to open the tail sliding door until the bottom surface of its slide is horizontal.

Images