A positioning device for installing a shock-absorbing airbag and a shock-absorbing airbag installation process

Abstract

The present invention relates to the technical field of ship vibration damping equipment, and discloses a positioning device for installing a vibration damping airbag and a vibration damping airbag installation process, which are used to determine the relative positions of an upper flange plate and a lower flange plate. The first flange plate is used for detachably connecting with the upper flange plate; the second flange plate is used for detachably connecting with the lower flange plate; the first flange plate and the second flange plate are arranged at intervals; the jack is located between the first flange plate and the second flange plate; the jack has a telescopic part that can telescopically move along a predetermined direction; the bottom of the jack is fixedly connected to the first flange plate, and the telescopic part is fixedly connected to the second flange; the limiting component is located between the first flange plate and the second flange plate; the limiting component includes a rod body and a sleeve sleeved outside the rod body and slidably arranged with the rod body; the rod body can telescopically move along a predetermined direction; the sleeve is fixedly connected to the second flange plate, and the rod body is fixedly connected to the first flange plate. The construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship vibration damping equipment, and particularly relates to a positioning device for installing vibration damping air bags and an installation process for vibration damping air bags. Background Art

[0002] At present, during the dredging process of large cutter suction dredgers, severe vibrations will occur due to the impact of the cutter beam on underwater objects. The upper part of the hull deck and the bottom of the superstructure are directly fixedly connected together, and the vibration is directly transmitted to the ship superstructure, bringing serious impacts to the crew and equipment in the ship superstructure. Therefore, existing cutter suction dredgers evenly install a large number of damping air bags between the upper part of the hull deck and the bottom of the superstructure to solve the problem of ship vibration.

[0003] In the prior art, first, the upper flange plate is installed at the bottom of the ship superstructure, then the vibration damping air bag is connected to the lower flange plate, and then the vibration damping air bag is placed between the bottom of the ship superstructure and the upper part of the ship deck, and the upper end of the vibration damping air bag is connected to the upper flange plate and the lower end is connected to the lower flange plate. After the lower flange plate abuts against the upper part of the ship deck by supplying air to the vibration damping air bag, the staff welds and fixes the lower flange plate to the upper part of the ship deck.

[0004] The lower flange plate needs to abut against the upper part of the ship deck before its welding and fixing work can be carried out, mainly to ensure the firmness of welding. Therefore, the positioning and welding of the lower flange plate can only be carried out after the installation of the damping air bag. However, the space for the installation position of the damping air bag is narrow, and the volume of the damping air bag itself is large. Therefore, it is not convenient for the welding work to be carried out, and protective measures need to be taken for the air bag body, resulting in low construction efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning device and an installation process that can determine the relative positions of the upper flange plate and the lower flange plate before installing the vibration damping air bag, so as to improve the fitting degree of connection with the upper flange plate and the lower flange plate when installing the vibration damping air bag subsequently, and thus improve the construction efficiency.

[0006] To achieve the above purpose, on the one hand, the present invention provides a positioning device for installing vibration damping air bags, which is used to determine the relative positions of the upper flange plate and the lower flange plate, and includes: a first flange plate, a second flange plate, a jack, and a limiting component;

[0007] The first flange plate is used for detachably connecting with the upper flange plate;

[0008] The second flange plate is used for detachably connecting with the lower flange plate; the first flange plate and the second flange plate are arranged at intervals;

[0009] The jack is located between the first flange plate and the second flange plate; the jack has a telescopic part that can telescopically move along a predetermined direction; the bottom of the jack is fixedly connected to the first flange, and the telescopic part is fixedly connected to the second flange;

[0010] The limiting assembly is located between the first flange plate and the second flange plate; the limiting assembly includes a rod body and a sleeve sleeved outside the rod body and slidably arranged with the rod body; the rod body can telescopically move along the predetermined direction; the sleeve is fixedly connected to the second flange plate, and the rod body is fixedly connected to the first flange plate.

[0011] Wherein, the upper flange plate is fixedly installed at the bottom of the ship superstructure; the lower flange plate is welded to the upper part of the ship deck.

[0012] Compared with the prior art, the positioning device for installing the shock-absorbing airbag in the embodiment of the present invention has the beneficial effects that: after connecting the first flange plate to the upper flange plate and then connecting the second flange plate to the lower flange plate, the first flange plate and the second flange plate are driven by the jack to move away from each other, and then the lower flange plate can be abutted against the upper part of the ship deck, and then the lower flange plate is fixedly connected to the upper part of the ship deck; and the limiting assembly can ensure that the relative movement between the first flange plate and the second flange plate can be carried out along the predetermined direction, and can accurately determine the relative position between the first flange plate and the second flange plate, which is convenient for improving the fitting degree of the shock-absorbing airbag connected to the upper flange plate and the lower flange plate; at the same time, since the positioning device is used to determine the relative position between the first flange plate and the second flange plate instead of the shock-absorbing airbag, and the positioning device is small in volume, it is convenient for the staff to weld the lower flange plate to the upper part of the ship deck; after using the positioning device, the work of fixedly connecting the upper flange plate and the lower flange plate to the bottom of the ship superstructure and the upper part of the ship deck respectively can be handled by one part of people, and the work of installing the shock-absorbing airbag between the upper flange plate and the lower flange plate can be handed over to another part of people, that is, the positioning and fixing work of the upper flange plate and the lower flange plate and the installation work of the shock-absorbing airbag are implemented separately, thereby improving the construction efficiency.

[0013] Further, the structures and sizes of the first flange plate and the second flange plate are the same, and the center lines of the first flange plate and the second flange coincide. Using the first flange plate and the second flange plate with the same structure can improve the unity of parts, facilitate production, processing and replacement, and the coincidence of the center lines of the two flange plates can facilitate the alignment of the upper flange plate and the lower flange plate, which is convenient for the subsequent installation work of the shock-absorbing airbag.

[0014] Further, both the first flange plate and the second flange plate are provided with bolt holes, and the first flange plate is connected to the upper flange plate by bolts, and the second flange plate is connected to the lower flange plate by bolts. Using bolt connection facilitates installation and disassembly work, and has high connection reliability.

[0015] Specifically, the end of the telescopic part is connected to the center of the first flange plate, which ensures the rationality of the force on the first flange plate and reduces the generation of torque.

[0016] The predetermined direction in which the telescopic part extends coincides with the center line.

[0017] Further, the number of the bolt holes on both the first flange plate and the second flange plate is multiple, and the multiple bolt holes on the first flange plate are spaced around the center line of the first flange plate; the multiple bolt holes on the second flange plate are spaced around the center line of the second flange plate. Using multiple bolts can improve the connection stability. At the same time, the bolts distributed in a circular pattern can reasonably distribute the force problem of the connection, and its design is reasonable.

[0018] Specifically, the number of the bolt holes on the first flange plate is three, and the number of the bolt holes on the second flange plate is three. The three bolt holes are arranged in a circular array around the center line. The number of bolt holes can meet the requirement of connection strength and also facilitate installation and disassembly.

[0019] Further, the number of the limiting components is three, and the three limiting components are arranged in a circular array around the center line. The number of the limiting components can meet the limiting requirements, can better ensure that the first flange plate and the second flange plate can only move along the predetermined direction, and effectively improves the accuracy of the relative position between the first flange plate and the second flange plate. At the same time, it can also save the use of materials and facilitate the operation of welding the lower flange plate on the ship deck.

[0020] Further, the jack is a hydraulic jack, and the jack is connected with a hydraulic pipe, and a pressure gauge is installed on the hydraulic pipe. Using a hydraulic jack, its structure is simple and easy to maintain. Installing a pressure gauge on the hydraulic pipe can help the staff observe whether the jacking pressure reaches the predetermined value and ensure that the abutting requirement between the lower flange plate and the ship deck is met.

[0021] On the other hand, the present invention provides an installation process for a vibration damping airbag, which is used to install the vibration damping airbag body between the bottom of the ship superstructure and the upper part of the ship deck, and includes the following steps:

[0022] S1: Prepare the upper flange plate and the lower flange plate, and fixedly connect the upper flange plate to the bottom of the ship superstructure;

[0023] S2: detachably connect the first flange plate to the upper flange plate and the second flange plate to the lower flange plate;

[0024] S3: drive the jack, and the first flange plate and the second flange plate move away from each other in a predetermined direction, and the lower flange plate abuts against the upper part of the ship deck;

[0025] S4: fixedly connect the lower flange plate to the upper part of the ship deck;

[0026] S5: remove the first flange plate and the second flange plate from the upper flange plate and the lower flange plate respectively, and remove the positioning device for installing the shock-absorbing airbag;

[0027] S6: install the shock-absorbing airbag body between the upper flange plate and the lower flange plate, and fixedly connect the shock-absorbing airbag body to both the upper flange plate and the lower flange plate respectively.

[0028] Compared with the prior art, the installation process of the shock-absorbing airbag in the embodiment of the present invention has the beneficial effect that: after adopting the positioning device, the work of fixedly connecting the upper flange plate and the lower flange plate to the bottom of the ship superstructure and the upper part of the ship deck respectively can be handled by one part of people, and the work of installing the shock-absorbing airbag between the upper flange plate and the lower flange plate is handed over to another part of people, that is, the positioning and fixing work of the upper flange plate and the lower flange plate and the installation work of the shock-absorbing airbag are implemented separately. The whole installation process is simple in operation, reasonable in division of labor, and effectively improves the construction efficiency; after adopting the positioning device, it is convenient to weld the lower flange plate to the upper part of the ship deck, improving the construction efficiency.

[0029] Further, the number of the shock-absorbing airbag bodies is multiple, and steps S1 to S6 are repeatedly executed until multiple shock-absorbing airbag bodies are completely installed between the bottom of the ship superstructure and the upper part of the ship deck. By repeatedly executing steps S1 to S6, it is convenient to completely install multiple shock-absorbing airbags between the bottom of the ship superstructure and the upper part of the ship deck. The operation is simple and the division of labor is reasonable.

[0030] Further, a first backing plate is fixedly connected to the bottom of the ship superstructure; a second backing plate is fixedly connected to the upper part of the ship deck; the first backing plate is fixedly connected to the upper flange plate; the second backing plate is fixedly connected to the lower flange plate. The setting of the backing plate can effectively disperse the acting force of the upper flange plate and the lower flange plate and avoid stress concentration.

[0031] Further, in steps S1 and S4, the upper flange plate and the lower flange plate are respectively fixed to the first backing plate and the second backing plate by welding, wherein the welding process is CO2 gas shielded welding. By fixing through welding, the fixing method is simple, and it can be fixed at any position on the second backing plate to meet the positioning requirements of the lower flange plate. Using CO2 gas shielded welding can improve the welding quality.

[0032] Further, the welding process includes the following steps:

[0033] Fix the upper flange plate and the lower flange plate to the first backing plate and the second backing plate respectively by tack welding, and form a number of tack welds evenly arranged along the circumferences of the upper flange plate or the lower flange plate;

[0034] Weld along the circumferences of the upper flange plate and the lower flange plate to form a number of additional welds. The number of the additional welds is the same as that of the tack welds, and the tack welds are located in the middle of the additional welds. After fixing the lower flange plate to the second backing plate by tack welding first, it is ensured that the two will not move relative to each other, which is convenient for subsequent additional welding operations. Then, the stability of the connection between the lower flange plate and the second backing plate is improved by additional welding; the weld length around the edge of the lower flange plate is divided into a number of additional welds, so that the length of each additional weld becomes shorter, which is more conducive to the welding operation of the staff.

[0035] Specifically, the method of welding the lower flange plate to the second backing plate is to first fix it by a number of spaced tack welds, and then perform additional welding around the edge of the lower flange plate to connect the positions of the tack welds. Among them, the leg height of the tack weld is 5 - 6 mm; the leg height of the additional weld is 8 - 10 mm; the length of the additional weld is 30 - 50 mm. The additional weld is located between two adjacent tack weld positions, and the two ends of the additional weld are two adjacent tack welds respectively. Fixing by tack welding first and then performing additional welding around the edge of the lower flange plate can improve the welding efficiency.

[0036] Further, the first backing plate is fixed to the upper flange plate by welding; the second backing plate is fixed to the lower flange plate by welding; the first backing plate is fixed to the bottom of the ship superstructure by welding; the second backing plate is fixed to the upper part of the ship deck by welding. Specifically, all the fixing methods by welding adopt CO2 gas shielded welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram showing the installation of the shock-absorbing airbag in the embodiment of the present invention completed;

[0038] Figure 2 is a schematic diagram of the structure of the positioning device in the embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the welding of the lower flange plate and the second backing plate in the embodiment of the present invention;

[0040] Figure 4 It is a process flow chart of the installation of the shock-absorbing airbag in the embodiment of the present invention;

[0041] In the figure, 1 is the first flange plate; 11 are bolt holes; 12 is the center line; 2 is the second flange plate; 3 is the jack; 31 is the telescopic part; 32 is the pressure gauge; 4 is the limit component; 41 is the rod body; 42 is the sleeve; 5 is the upper flange plate; 6 is the lower flange plate; 7 is the shock-absorbing airbag; 71 is the first airbag flange plate; 72 is the second airbag flange plate; 8 is the first backing plate; 9 is the second backing plate; 91 is the tack weld; 92 is the additional weld; 101 is the bottom of the ship's superstructure; 102 is the upper part of the ship's deck. Specific embodiments

[0042] The following will further describe in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0044] As Figures 1-3 shown, a preferred embodiment of the present invention is a positioning device for installing a shock-absorbing airbag 7, which is used to determine the relative positions of the upper flange plate 5 and the lower flange plate 6, and includes: a first flange plate 1, a second flange plate 2, a jack 3, and a limit component 4;

[0045] The first flange plate 1 is used for detachable connection with the upper flange plate 5;

[0046] The second flange plate 2 is used for detachable connection with the lower flange plate 6; the first flange plate 1 and the second flange plate 2 are arranged at intervals;

[0047] The jack 3 is located between the first flange plate 1 and the second flange plate 2; the jack 3 has a telescopic part 31 that can be telescopically moved along a predetermined direction; the bottom of the jack 3 is fixedly connected to the first flange, and the telescopic part 31 is fixedly connected to the second flange;

[0048] The limiting component 4 is located between the first flange plate 1 and the second flange plate 2; the limiting component 4 includes a rod body 41 and a sleeve 42 sleeved outside the rod body 41 and slidably arranged with the rod body 41; the rod body 41 can telescopically move along a predetermined direction; the sleeve 42 is fixedly connected to the second flange plate 2, and the rod body 41 is fixedly connected to the first flange plate 1.

[0049] Among them, the upper flange plate 5 is fixedly installed at the bottom 101 of the ship superstructure; the lower flange plate 6 is welded to the upper part of the ship deck.

[0050] Compared with the prior art, the beneficial effect of the positioning device for installing the damping airbag 7 in the embodiment of the present invention is that: after connecting the first flange plate 1 with the upper flange plate 5, connecting the second flange plate 2 with the lower flange plate 6, and then driving the first flange plate 1 and the second flange plate 2 to move away from each other by the jack 3, the lower flange plate 6 can be abutted against the upper part 102 of the ship deck, and then the lower flange plate 6 is fixedly connected to the upper part 102 of the ship deck; and the limiting component 4 can ensure that the relative movement between the first flange plate 1 and the second flange plate 2 can be carried out along a predetermined direction, and can accurately determine the relative position between the first flange plate 1 and the second flange plate 2, which is convenient for improving the fitting degree of the connection between the damping airbag 7 and the upper flange plate 5 and the lower flange plate 6; at the same time, since the positioning device is used to determine the relative position between the first flange plate 1 and the second flange plate 2 instead of the damping airbag 7, and the positioning device has a small volume, it is convenient for the staff to weld the lower flange plate 6 to the upper part of the ship deck; after using the positioning device, the work of fixedly connecting the upper flange plate 5 and the lower flange plate 6 to the bottom 101 of the ship superstructure and the upper part of the ship deck respectively can be handled by one part of people, and the work of installing the damping airbag 7 between the upper flange plate 5 and the lower flange plate 6 can be handed over to another part of people, that is, the positioning and fixing work of the upper flange plate 5 and the lower flange plate 6 and the installation work of the damping airbag 7 are implemented separately, thereby improving the construction efficiency.

[0051] In one embodiment, the structures and dimensions of the first flange plate 1 and the second flange plate 2 are the same, and the center line 12 of the first flange plate 1 coincides with the center line 12 of the second flange. Using the first flange plate 1 and the second flange plate 2 with the same structure can improve the unity of parts, facilitate production, processing and replacement, and the coincidence of the center lines 12 of the two flange plates can facilitate the alignment of the upper flange plate 5 and the lower flange plate 6, which is convenient for the subsequent installation work of the damping airbag 7.

[0052] In one embodiment, the first flange plate 1 and the second flange plate 2 are both provided with bolt holes 11, and the first flange plate 1 is bolted to the upper flange plate 5, and the second flange plate 2 is bolted to the lower flange plate 6. Using bolt connection is convenient for installation and disassembly work, and the connection reliability is high.

[0053] Specifically, the end of the telescopic part 31 is connected to the center of the first flange plate 1, ensuring the rationality of the force on the first flange plate 1 and reducing the generation of torque.

[0054] The predetermined direction in which the telescopic part 31 extends coincides with the center line 12.

[0055] In one embodiment, the number of bolt holes 11 on both the first flange plate 1 and the second flange plate 2 is multiple. The multiple bolt holes 11 on the first flange plate 1 are spaced apart and distributed around the center line 12 of the first flange plate 1; the multiple bolt holes 11 on the second flange plate 2 are spaced apart and distributed around the center line 12 of the second flange plate 2. Using multiple bolts can improve the connection stability. At the same time, the circumferentially distributed bolts can reasonably distribute the force problem of the connection, and its design is reasonable.

[0056] Specifically, the number of bolt holes 11 on the first flange plate 1 is three, and the number of bolt holes 11 on the second flange plate 2 is three. The three bolt holes 11 are arranged in a circular array around the center line 12. The number of bolt holes 11 can meet the requirements of connection strength and is also convenient for installation and disassembly.

[0057] In one embodiment, the number of the limiting components 4 is three, and the three limiting components 4 are arranged in a circular array around the center line 12. The number of the limiting components 4 can meet the limiting requirements, and can better ensure that the first flange plate 1 and the second flange plate 2 can only move in a predetermined direction, effectively improving the accuracy of the relative position between the first flange plate 1 and the second flange plate 2. At the same time, it can also save the use of materials and is also convenient for the operation of welding the lower flange plate 6 on the ship deck.

[0058] In one embodiment, the jack 3 is a hydraulic jack 3, and the jack 3 is connected with a hydraulic pipe, and a pressure gauge 32 is installed on the hydraulic pipe. Using the hydraulic jack 3, its structure is simple and convenient for maintenance. Installing the pressure gauge 32 on the hydraulic pipe can help the staff observe whether the jacking pressure reaches the predetermined value and ensure that the abutting requirements between the lower flange plate 6 and the ship deck are met.

[0059] On the other hand, as Figure 4 shown, the present invention provides an installation process for a vibration damping airbag 7, which is used to install the vibration damping airbag 7 body between the bottom 101 of the ship superstructure and the upper part 102 of the ship deck, and includes the following steps:

[0060] S1: Prepare the upper flange plate 5 and the lower flange plate 6, and fixedly connect the upper flange plate 5 to the bottom 101 of the ship superstructure;

[0061] S2: Detachably connect the first flange plate 1 to the upper flange plate 5, and detachably connect the second flange plate 2 to the lower flange plate 6;

[0062] S3: Drive the jack 3, the first flange plate 1 and the second flange plate 2 move away from each other in a predetermined direction, and the lower flange plate 6 abuts against the upper part 102 of the ship deck;

[0063] S4: Fix the lower flange plate 6 to the upper part 102 of the ship deck;

[0064] S5: Remove the first flange plate 1 and the second flange plate 2 from the upper flange plate 5 and the lower flange plate 6 respectively, and remove the positioning device for installing the shock-absorbing airbag 7;

[0065] S6: Install the shock-absorbing airbag 7 body between the upper flange and the lower flange, and fixedly connect the shock-absorbing airbag 7 body to the upper flange plate 5 and the lower flange plate 6 respectively.

[0066] Compared with the prior art, the installation process of the shock-absorbing airbag 7 in the embodiment of the present invention has the beneficial effect that: after adopting the positioning device, the work of respectively fixedly connecting the upper flange plate 5 and the lower flange plate 6 to the bottom 101 of the ship superstructure and the upper part of the ship deck can be handled by one part of people, and the work of installing the shock-absorbing airbag 7 between the upper flange plate 5 and the lower flange plate 6 is handed over to another part of people, that is, the positioning and fixing work of the upper flange plate 5 and the lower flange plate 6 and the installation work of the shock-absorbing airbag 7 are implemented separately. The whole installation process is simple in operation, reasonable in division of labor, and effectively improves the construction efficiency; after adopting the positioning device, it is convenient to weld the lower flange plate 6 to the upper part of the ship deck, improving the construction efficiency.

[0067] In one embodiment, the number of the shock-absorbing airbag 7 bodies is multiple, and steps S1 to S6 are repeatedly executed until all the multiple shock-absorbing airbag 7 bodies are completely installed between the bottom 101 of the ship superstructure and the upper part 102 of the ship deck. By repeatedly executing steps S1 to S6, it is convenient to completely install multiple shock-absorbing airbags 7 between the bottom 101 of the ship superstructure and the upper part 102 of the ship deck. The operation is simple and the division of labor is reasonable.

[0068] In one embodiment, a first backing plate 8 is fixedly connected to the bottom 101 of the ship superstructure; a second backing plate 9 is fixedly connected to the upper part 102 of the ship deck; the first backing plate 8 is fixedly connected to the upper flange plate 5; the second backing plate 9 is fixedly connected to the lower flange plate 6. The setting of the backing plate can effectively disperse the acting forces of the upper flange plate 5 and the lower flange plate 6 and avoid stress concentration.

[0069] In one embodiment, in steps S1 and S4, the upper flange plate 5 and the lower flange plate 6 are respectively fixed to the first backing plate 8 and the second backing plate 9 by a welding process, wherein the welding process is CO2 gas shielded welding. By fixing through welding, the fixing method is simple, and it can be fixed at any position of the second backing plate 9 to meet the positioning requirements of the lower flange plate 6. Adopting CO2 gas shielded welding can improve the welding quality.

[0070] In one embodiment, the welding process includes the following steps:

[0071] Fix the upper flange plate 5 and the lower flange plate 6 to the first backing plate 8 and the second backing plate 9 respectively by tack welding 91, and form a number of tack welding 91 seams evenly arranged circumferentially along the upper flange plate 5 or the lower flange plate 6;

[0072] Weld a number of additional weld seams circumferentially along the upper flange plate 5 and the lower flange plate 6. The number of additional weld seams is the same as that of the tack weld seams, and the tack weld seams are located in the middle of the additional weld seams. After fixing the lower flange plate 6 to the second backing plate 9 by tack welding 91 first, ensure that the two will not move relative to each other to facilitate subsequent additional welding 92 operation, and then improve the stability of the connection between the lower flange plate 6 and the second backing plate 9 by additional welding 92; divide the weld length around the edge of the lower flange plate 6 into a number of additional weld seams, so that the length of each additional weld seam becomes shorter, which is more conducive to the welding operation of the staff.

[0073] Specifically, the lower flange plate 6 is welded to the second backing plate 9 by first fixing it with a number of spaced tack welds 91 and then performing additional welding 92 around the edge of the lower flange plate 6 to connect the positions of each tack weld 91. Among them, the leg height of the tack weld 91 is 5 - 6 mm; the leg height of the additional welding 92 is 8 - 10 mm; the length of the weld seam of the additional welding 92 is 30 - 50 mm. The additional welding 92 is located between two adjacent tack weld 91 positions, and the two ends of the additional welding 92 are two adjacent tack welds 91 respectively. Fixing with tack weld 91 first and then performing additional welding 92 around the edge of the lower flange plate 6 can improve the welding efficiency.

[0074] In one embodiment, the first backing plate 8 is fixed to the upper flange plate 5 by welding; the second backing plate 9 is fixed to the lower flange plate 6 by welding; the first backing plate 8 is fixed to the bottom 101 of the ship's superstructure by welding; the second backing plate 9 is fixed to the upper part 102 of the ship's deck by welding. Specifically, all the welding fixing methods adopt CO2 gas shielded welding.

[0075] The working process of the present invention is as follows: First, weld the first backing plate 8 to the bottom 101 of the ship's superstructure, and weld the second backing plate 9 to the upper part 102 of the ship's deck; weld the upper flange plate 5 to the lower end face of the first backing plate 8; the jack 3 works, and the first flange plate 1 and the second flange plate 2 approach each other along a predetermined direction, so that the first flange plate 1 and the second flange plate 2 are placed between the upper flange plate 5 and the lower flange plate 6; bolt-connect the first flange plate 1 to the upper flange plate 5; bolt-connect the second flange plate 2 to the lower flange plate 6; drive the jack 3 so that the first flange plate 1 and the second flange plate 2 move away from each other along a predetermined direction, the second flange plate 2 abuts the lower flange plate 6 against the second backing plate 9, and the jack 3 continues to drive the first flange plate 1 and the second flange plate 2 to move away from each other along a predetermined direction. When the staff observes that the pressure value on the pressure gauge 32 reaches the set range, stop the jack 3 from continuing to drive. The staff first performs multiple spaced positioning welds 91 on the lower flange plate 6 to fix it on the second backing plate 9, and then connect the positioning welds 91 by additional welding 92. Finally, the additional welding 92 welds the lower edge of the lower flange plate 6 to the second backing plate 9; complete the fixing work of the upper flange plate 5 and the lower flange plate 6; separate the first flange plate 1 and the second flange plate 2 from the upper flange plate 5 and the lower flange plate 6 respectively, and take out the positioning device.

[0076] Install the shock-absorbing airbag 7 between the upper flange plate 5 and the lower flange plate 6; specifically, the shock-absorbing airbag 7 has a first airbag flange plate 71 and a second airbag flange plate 72. The first airbag flange plate 71 and the second airbag flange plate 72 are respectively bolt-fixed to the upper flange plate 5 and the lower flange plate 6 in a one-to-one correspondence. Just inflate the airbag to make it meet the working requirements, and complete the installation work of the shock-absorbing airbag 7. Repeat the above work until all the shock-absorbing airbags 7 are installed.

[0077] In summary, the embodiment of the present invention provides a positioning device for installing a shock-absorbing airbag and a shock-absorbing airbag 7 installation process. After connecting the first flange plate 1 to the upper flange plate 5, the second flange plate 2 is connected to the lower flange plate 6. Then, the first flange plate 1 and the second flange plate 2 are driven to move away from each other by the jack 3, and then the lower flange plate 6 can be abutted against the upper part 102 of the ship deck. Next, the lower flange plate 6 is fixedly connected to the upper part 102 of the ship deck. The limiting component 4 can ensure that the relative movement between the first flange plate 1 and the second flange plate 2 can be carried out along a predetermined direction, accurately determine the relative position between the first flange plate 1 and the second flange plate 2, and facilitate improving the fitting degree of the connection between the shock-absorbing airbag 7 and the upper flange plate 5 and the lower flange plate 6. At the same time, since the positioning device is used to determine the relative position between the first flange plate 1 and the second flange plate 2 instead of the shock-absorbing airbag 7, and the positioning device is small in volume, it is convenient for the staff to weld the lower flange plate 6 on the upper part of the ship deck. After using the positioning device, the work of respectively fixedly connecting the upper flange plate 5 and the lower flange plate 6 to the bottom 101 of the ship superstructure and the upper part of the ship deck can be handled by one part of people, and the work of installing the shock-absorbing airbag 7 between the upper flange plate 5 and the lower flange plate 6 can be handed over to another part of people. That is, the positioning and fixing work of the upper flange plate 5 and the lower flange plate 6 and the installation work of the shock-absorbing airbag 7 are implemented separately, thereby improving the construction efficiency.

[0078] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A positioning device for installing a shock-absorbing airbag, which is used to determine the relative positions of an upper flange plate and a lower flange plate, and is characterized in that, Comprising: A first flange plate for detachably connecting with the upper flange plate; A second flange plate for detachably connecting with the lower flange plate; the first flange plate and the second flange plate are arranged at intervals; A jack located between the first flange plate and the second flange plate; the jack has a telescopic part that can telescopically move along a predetermined direction; the bottom of the jack is fixedly connected to the first flange plate, and the telescopic part is fixedly connected to the second flange plate; A limiting component located between the first flange plate and the second flange plate; the limiting component includes a rod body and a sleeve sleeved outside the rod body and slidably arranged with the rod body; the rod body can telescopically move along the predetermined direction; the sleeve is fixedly connected to the second flange plate, and the rod body is fixedly connected to the first flange plate; Wherein, the upper flange plate is used for being fixed on the lower end surface of the first cushion plate, and the jack is used for driving the first flange plate and the second flange plate to approach each other along the predetermined direction, so that the first flange plate and the second flange plate can replace the shock-absorbing airbag and be placed between the upper flange plate and the lower flange plate, and are respectively detachably connected to the upper flange plate and the lower flange plate; The jack is further used for driving the first flange plate and the second flange plate to move away from each other along the predetermined direction, so that the second flange plate abuts the lower flange plate against the second cushion plate, so that the lower flange plate can be fixedly connected to the second cushion plate.

2. The positioning device for installing a shock-absorbing airbag according to claim 1, characterized in that, The structures and dimensions of the first flange plate and the second flange plate are the same, and the center lines of the first flange plate and the second flange coincide.

3. The positioning device for installing a shock-absorbing airbag according to claim 2, characterized in that, Both the first flange plate and the second flange plate are provided with bolt holes, and the first flange plate is bolted to the upper flange plate, and the second flange plate is bolted to the lower flange plate.

4. The positioning device for installing a shock-absorbing airbag according to claim 3, characterized in that, The number of the bolt holes on the first flange plate and the second flange plate is multiple, and the multiple bolt holes on the first flange plate are spaced around the center line of the first flange plate; the multiple bolt holes on the second flange plate are spaced around the center line of the second flange plate.

5. The positioning device for installing a shock-absorbing airbag according to claim 2, characterized in that, The number of the limiting components is multiple, and the multiple limiting components are spaced around the center line of the first flange plate.

6. The positioning device for installing a vibration damping airbag according to claim 2 or 5, characterized in that, The number of the limiting components is three groups, and the three groups of limiting components are evenly arranged along the circumferential direction of the first flange plate.

7. The positioning device for installing a shock-absorbing airbag according to claim 1, wherein The jack is a hydraulic jack, and the jack is connected with a hydraulic pipe, and a pressure gauge is installed on the hydraulic pipe.

8. An installation process for a shock-absorbing airbag, which is used to install a shock-absorbing airbag body between the bottom of a ship superstructure and the upper part of a ship deck, is characterized in that Executed by using the positioning device for installing the shock-absorbing airbag according to any one of claims 1-7, including the following steps: S1: Prepare the upper flange plate and the lower flange plate, and fixedly connect the upper flange plate to the bottom of the ship superstructure; S2: Detachably connect the first flange plate with the upper flange plate, and detachably connect the second flange plate with the lower flange plate; S3: Drive the jack, the first flange plate and the second flange plate move away from each other along the predetermined direction, and the lower flange plate abuts against the upper part of the ship deck; S4: Fix the lower flange plate to the upper part of the ship deck; S5: Remove the first flange plate and the second flange plate from the upper flange plate and the lower flange plate respectively, and remove the positioning device for installing the shock-absorbing airbag; S6: Install the shock-absorbing airbag body between the upper flange plate and the lower flange plate, and fixedly connect the shock-absorbing airbag body to the upper flange plate and the lower flange plate respectively.

9. The installation process according to claim 8, wherein, The number of the shock-absorbing airbag bodies is multiple. Repeat steps S1 to S6 until multiple shock-absorbing airbag bodies are completely installed between the bottom of the ship superstructure and the upper part of the ship deck.

10. The installation process according to claim 8, characterized in that, A first backing plate is fixedly connected to the bottom of the ship superstructure; a second backing plate is fixedly connected to the upper part of the ship deck; the first backing plate is fixedly connected to the upper flange plate; the second backing plate is fixedly connected to the lower flange plate.

11. The installation process according to claim 10, characterized in that, In steps S1 and S4, the upper flange plate and the lower flange plate are respectively fixed to the first backing plate and the second backing plate by welding process, wherein the welding process is CO2 gas shielded welding.

12. The installation process according to claim 11, characterized in that, The welding process includes the following steps: Fix the upper flange plate and the lower flange plate to the first backing plate and the second backing plate respectively by tack welding, and form a number of tack welds evenly arranged along the circumference of the upper flange plate or the lower flange plate; Weld circumferentially along the upper flange plate and the lower flange plate to form a number of additional welds. The number of the additional welds is the same as that of the tack welds, and the tack welds are located in the middle of the additional welds.

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