Tensioning device for assembling insulation panels on liquefied natural gas vessels

Abstract

The utility model provides a tensioning device for assembling an insulating plate for a liquefied natural gas ship, comprising a frame and a plurality of clamping mechanisms, each of which comprises a pressure roller and a clamping drive assembly, so that the pressure roller can clamp a support strip in a strip groove at a corner of an insulating plate body along a predetermined direction. Furthermore, since the pressure roller has a floating connection assembly, the pressure roller is connected to a pressure plate in the clamping drive assembly in a floating manner, so that the pressure roller can translate and / or axially deflect relative to the pressure plate within a predetermined range. Therefore, even if there is a tolerance between the strip groove at the corner of the insulating plate body and the support strip, the pressure roller can translate and / or deflect in an axial direction by a small amplitude, so that a good clamping effect can be achieved even in the presence of a tolerance, effectively avoiding the situation where the glue between the support strip and the corner of the insulating plate body overflows from one side due to uneven pressure, and improving the assembly accuracy of the marine insulating plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship insulation board processing devices, and in particular relates to a tensioning device for assembling insulation boards for liquefied natural gas (LNG) ships. Background Art

[0002] Insulation panels are widely used in LNG ships for heat insulation. A commonly used insulation panel structure includes a panel body and supporting wood strips installed at the four corners of the panel body. The panel body is a multi-layer composite structure. After setting the glue, it needs to be pressed by a large press. The four supporting wood strips are also bonded to the panel body by glue. The traditional assembly method of insulation panels is to manually combine them after applying glue and set rubber belts to fix them. This traditional method has low production efficiency, heavy burden on workers and high scrap rate.

[0003] In order to solve the above problems, CN109954633A discloses a corner clamp positioning and tensioning device, which includes an outer frame and corner brackets arranged at four corner positions of the outer frame. The corner brackets use the pressure of compression springs to make the pressure rollers press the corner clamps (i.e., supporting small wooden strips), and use guide rods to guide the movement of the pressure rollers, so that the supporting wooden strips can be automatically pressed. In addition, the pressure rollers are connected by a push rod, which passes through the push rod hole on the connecting plate and can swing in the push rod hole, so that the pressure rollers can swing within a certain range to adapt to the deviation caused by the installation.

[0004] However, the above tensioning device still has some shortcomings:

[0005] First, the swing of the push rod can only adapt to the deviation caused by partial installation, and it is still not possible to press well for the relative tilt of the supporting wood strips caused by tolerance. In addition, the push rod is very thin and its length direction is different from the spring pressure direction after the push rod swings. When the push rod is subjected to a large pressure, it may bend and deform, which affects the assembly accuracy.

[0006] Secondly, the outer frame is made of angle steel, which has limited strength and is difficult to provide good support when the clamping force is large, which also affects the assembly accuracy. Utility Model Content

[0007] The utility model is designed to solve the above problems, and aims to provide a tensioning device that can press multiple support strips into the strip grooves at the corners of the insulating plate body and achieve a good compression effect even when there is a tolerance. The utility model adopts the following technical solutions:

[0008] The utility model provides a tensioning device for assembling insulating panels for liquefied natural gas ships, characterized in that it comprises: a frame for being arranged on the periphery of an insulating panel body; and a plurality of pressing mechanisms, respectively arranged on the frame, and respectively used to press a plurality of support strips into the strip grooves at the corners of the insulating panel body; wherein the pressing mechanism comprises a pressing roller and a pressing drive assembly for driving the pressing roller to press the support strips, the pressing drive assembly comprises a pressing plate movable in a predetermined direction, the pressing roller comprises at least one pressing roller member and a floating connection assembly, the pressing roller member and the pressing plate are connected via the floating connection assembly, so that the pressing roller member can translate and / or deflect relative to the pressing plate within a predetermined range.

[0009] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the middle part of the pressure plate has a floating limit groove, and the floating connection assembly includes: a pressure roller connecting rod, which is used to connect the pressure roller member and has a floating matching groove, and the middle part of the pressure plate can be movably arranged in the floating matching groove; and a floating limit member, the two ends of which are respectively fixed on the pressure roller connecting rod, and the middle part can be movably arranged in the floating limit groove.

[0010] The tensioning device for assembling the insulating plate of a liquefied natural gas ship provided by the utility model may also have such technical features, wherein the floating limit groove extends and penetrates along the width direction of the pressure plate, the middle part of the floating limit member is arranged in the floating limit groove, and the width of the middle part of the floating limit member is smaller than the groove width of the floating limit groove, the floating matching groove extends and penetrates along the direction perpendicular to the axial direction of the pressure roller connecting rod, the middle part of the pressure plate is arranged in the floating matching groove, and the width of the middle part of the pressure plate is smaller than the groove width of the floating matching groove.

[0011] The tensioning device for assembling insulating panels for liquefied natural gas ships provided by the utility model may also have such technical features, wherein the notch of the floating limit groove is located on one surface in the thickness direction of the pressure plate, and the other surface in the thickness direction of the pressure plate is a pushing surface, and the pushing surface faces the bottom surface of the floating matching groove, and the bottom surface of the floating matching groove is perpendicular to the axial direction of the pressure roller connecting rod, and the pushing surface and the bottom surface of the floating matching groove are both planes.

[0012] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the pressure roller connecting rod also has two limit piece installation grooves, which are respectively arranged on both sides of the floating matching groove, and the bottom surfaces of the two limit piece installation grooves are planes and perpendicular to the bottom surfaces of the floating matching grooves, and the two ends of the floating limit piece are respectively fixed to the two limit piece installation grooves by fasteners, and one end surface of the two ends of the floating limit piece is a plane and abuts against the bottom surface of the limit piece installation groove.

[0013] The tensioning device for assembling insulating panels for liquefied natural gas ships provided by the utility model may also have such technical features, wherein the clamping drive assembly also includes: a fixed seat, which is arranged at the corner of the frame and has two guide rod holes; two guide rods, which are respectively inserted into the two guide rod holes, and the two ends of the pressure plate are respectively connected to one end of the two guide rods; and two compression springs, which are respectively mounted on the two guide rods, and one end of which is abutted against the fixed seat and the other end is abutted against the pressure plate.

[0014] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the clamping drive assembly also includes: a limit plate, both ends of which are respectively connected to the other ends of the two guide rods, and the limit plate and the pressure plate are respectively located on both sides of the fixed seat; and two bearings, respectively arranged between the two guide rods and the two guide rod holes.

[0015] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the pressure roller includes at least two pressure roller members, both of which are arranged on the pressure roller connecting rod and are respectively located on both sides of the floating matching groove, the support bar has a strip groove, and the strip groove has two side walls, the outer diameters of the two pressure roller members are the same, and the radius corresponding to the outer diameter is smaller than the height of each of the two side walls.

[0016] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the pressure roller member is a piece of anti-sticking material, which is detachably mounted on the pressure roller connecting rod, and the pressure roller also includes two pressure roller limiting members, which are detachably arranged at both ends of the pressure roller connecting rod and are used to limit the pressure roller member.

[0017] The tensioning device for assembling liquefied natural gas ship insulation panels provided by the utility model may also have such technical features, wherein the frame includes: a plurality of support rods, all of which are metal square tubes; and a plurality of connecting plates, respectively connected between two adjacent support rods, and the clamping mechanism is arranged on the connecting plates.

[0018] Function and effect of utility model

[0019] According to the utility model, the tensioning device for assembling the insulating board for liquefied natural gas ships includes a frame and a plurality of clamping mechanisms, each of which includes a pressure roller and a clamping drive assembly, so that the pressure roller can clamp the support strip in the strip groove at the corner of the insulating board body along a predetermined direction. Furthermore, since the pressure roller has a floating connection assembly, the pressure roller is connected to the pressure plate in the clamping drive assembly in a floating manner, so that the pressure roller can translate and / or axially deflect relative to the pressure plate within a predetermined range. Therefore, even if there is a tolerance between the strip groove at the corner of the insulating board body and the support strip, the pressure roller can be translated and / or deflected in an axial direction by a small amplitude translation and / or deflection, so that a good clamping effect can be achieved even in the presence of tolerance, effectively avoiding the situation where the glue between the support strip and the corner of the insulating board body overflows from one side due to uneven pressure, and improving the assembly accuracy of the marine insulating board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a tensioning device for assembling an insulating plate for a liquefied natural gas ship according to an embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the use state of the tensioning device for assembling the insulation board for liquefied natural gas ships in the embodiment of the utility model;

[0022] Figure 3 It is a three-dimensional enlarged view of the corner of the insulating plate body in the embodiment of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the supporting wooden strips in the embodiment of the utility model;

[0024] Figure 5 It is a three-dimensional enlarged view of the corner of the tensioning device for assembling the insulation board for liquefied natural gas ships in the embodiment of the utility model;

[0025] Figure 6 It is an enlarged top view of the corner of the tensioning device for assembling the insulating plate for liquefied natural gas ships in the embodiment of the utility model;

[0026] Figure 7 It is a three-dimensional diagram of the pressure roller connecting rod in the embodiment of the utility model;

[0027] Figure 8 It is a three-dimensional diagram of a pressing plate in an embodiment of the utility model;

[0028] Fig. 9 It is a three-dimensional diagram of the pressing plate and the pressing roller in the embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of a small translation of the pressing roller in an embodiment of the utility model;

[0030] Fig.11 It is a schematic diagram of a small-amplitude deflection of the pressure roller in an embodiment of the utility model.

[0031] Reference numerals:

[0032] Tensioning device 10 for assembling insulation board for liquefied natural gas ship; frame 11; support rod 111; connecting plate 112; pressing mechanism 12; fixing seat 121; pressing roller 122; pressing roller connecting rod 1221; floating matching groove 12211; limiting member mounting groove 12212; limiting member mounting hole 12212a; pressing roller 1222; pressing roller limiting member 1223; floating limiting member 1224; pressing drive assembly 123; guide rod 1231; limiting plate 1232; pressing plate 1233; floating limiting groove 12331; guide rod connecting hole 12332; spring limiting groove 12333; pushing surface

[0033] 12334; compression spring 1234; pull ring assembly 124; pull ring mounting plate 1241; pull ring member 1242; marine insulating board 20; insulating board body 21; base plate 211; strip groove 2111; composite board member 212; support bar 22; strip groove 221; back 222. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the tensioning device for assembling insulation panels for liquefied natural gas ships of the utility model is specifically described below in combination with embodiments and drawings.

[0035] <Example>

[0036] Figure 1 is a three-dimensional diagram of a tensioning device for assembling an insulating plate for a liquefied natural gas ship in this embodiment, Figure 2 is a three-dimensional diagram of the use state of the tensioning device for assembling the insulation board for liquefied natural gas ships in this embodiment, Figure 2 An insulating plate (workpiece) is also shown.

[0037] like Figure 1 and Figure 2 As shown, this embodiment provides a tensioning device 10 for assembling an insulating board for a liquefied natural gas ship (hereinafter referred to as the tensioning device 10), which is used to assemble an insulating board 20 for a liquefied natural gas ship (hereinafter referred to as the insulating board 20), and is specifically used to fix the relative position between the board body and four supporting wood strips in the curing stage after the insulating board 20 is glued. The device 10 is based on the structural design of the marine insulating board 20, so the structure of the marine insulating board 20 will be briefly described below.

[0038] Figure 3 It is a three-dimensional enlarged view of the corner of the insulating plate body in this embodiment.

[0039] Figure 4 It is a three-dimensional diagram of the supporting wooden strips in this embodiment.

[0040] like Figures 2 to 4 As shown, the insulating board 20 includes an insulating board body 21 and four supporting bars 22 .

[0041] The insulating plate body 21 is a multi-layer composite structure. In this embodiment, it includes a base plate 211 and two composite plates 212 respectively arranged on the upper and lower surfaces of the base plate 211, that is, the insulating plate body 21 is a three-layer composite structure. The base plate 211 is made of a polyurethane board, and the two composite plates 212 are made of plywood.

[0042] The substrate 211 is generally in the shape of a cuboid with missing corners, and has concave strip grooves 2111 at its four corners. The strip grooves 2111 extend in the thickness direction of the substrate 211. The strip grooves 2111 have two side walls that are roughly perpendicular to each other and a bottom surface connected between the two side walls. The width of the bottom surface is very narrow, and the angle between the bottom surface and the side wall is about 45°. In addition, the width of one side wall is smaller than the width of the other side wall.

[0043] The composite plate 212 is in the shape of a rectangular plate with missing corners, and has notches 2121 at its four corners. The size of the notches 2121 is smaller than the cross-sectional size of the strip groove 2111, so that both ends of the strip groove 2111 in the extension direction are partially blocked by the corners of the composite plate 212. After the support bar 22 is installed, the edges of the corners of the composite plate 212 are roughly flush with the edges of the grooves of the support bar 22.

[0044] The insulating plate body 21 may also be other composite structures, such as a five-layer structure, and the four corners also have the above-mentioned strip grooves 211 a.

[0045] like Figure 4 As shown, the support bar 22 is a strip-shaped two-sided body, and its cross section is roughly L-shaped. One side of the support bar 22 has a strip-shaped groove 221, and the other side opposite thereto is a back 222.

[0046] The strip groove 221 is a V-shaped groove having two substantially perpendicular side walls forming a V-shape. Both side walls are rectangular, and the height of one side wall is higher than the other side wall.

[0047] The back 222 has three surfaces matching the structure of the strip groove 2111 of the insulating plate body 21 , that is, two of the surfaces are substantially perpendicular to each other, and the other surface connected between the two surfaces is narrower and has an angle of about 45° with the two surfaces.

[0048] During the manufacturing process of the insulating board 20, glue is arranged between the above-mentioned substrate 211 and the two composite board members 212, and glue is also arranged between each support bar 22 and the strip groove 211a of the substrate 211. A large press is used to press the stacked substrate 211 and the two composite board members 212; at the same time, each support bar 22 needs to be pressed toward the strip groove 2111 at the corner of the insulating board body 21. The tensioning device 10 of this embodiment is used to press four support bars 22 at the same time.

[0049] In addition, tolerances are unavoidable in the manufacturing process of the insulating plate body 21 and the supporting bar 22 . The tensioning device 10 of this embodiment is also used to solve the pressing problem caused by the tolerances.

[0050] The structure and function of the liquefied natural gas ship insulation plate assembly tensioning device 10 of this embodiment will be specifically described below in conjunction with the structure of the insulation plate 20 described above.

[0051] like Figure 1 As shown, the tensioning device 10 includes a frame 11 and four clamping mechanisms 12 .

[0052] The frame 11 includes four support rods 111 and four connecting plates 112. The support rods 111 are metal square tubes with high strength. The connecting plates 112 are U-shaped plates, and a plurality of mounting holes are respectively provided at the positions of the two ends of the U-shape and the position of the bottom of the U-shape on the connecting plate 112.

[0053] Among them, the lengths of two support rods 111 on opposite sides of one group are equal and greater than the length of the insulating plate body 21, and the lengths of two support rods 111 on opposite sides of another group are equal and greater than the width of the insulating plate body 21, so that the frame 11 can be sleeved on the outer circle of the insulating plate body 21 without contacting the insulating plate body 21.

[0054] The four pressing mechanisms 12 are respectively installed on the four connecting plates 112 and are used to press the four supporting bars 22 respectively.

[0055] Figure 5 is a three-dimensional enlarged view of the corner of the tensioning device for assembling the insulation board for liquefied natural gas ships in this embodiment, Figure 6 It is an enlarged top view of the corner of the tensioning device for assembling the insulation board for liquefied natural gas ships in this embodiment.

[0056] like Figure 5 and Figure 6 As shown, the pressing mechanism 12 includes a fixing seat 121 , a pressing roller 122 , a pressing driving assembly 123 and a pull ring assembly 124 .

[0057] The fixing seat 121 is roughly in the shape of a rectangular parallelepiped, with a pair of guide rod holes 1211 opened along its width direction, and multiple mounting holes opened along its height direction, and the multiple mounting holes and the two guide rod holes 1211 are staggered in their extension direction. The guide rod holes 1211 are circular through holes. The fixing seat 121 is fixedly mounted on the connecting plate 112 by multiple fasteners (bolts), and the angle between the length direction of the fixing seat 121 and the length direction of the adjacent support rod 111 is 45°.

[0058] The pressure roller 122 is used to press the support bar 22. The pressure roller 122 includes a pressure roller connecting rod 1221, two pressure roller members 1222, a pressure roller limiting member 1223 and a floating limiting member 1224, wherein the pressure roller connecting rod 1221 and the floating limiting member 1224 are floating connection components.

[0059] Figure 7 It is a stereoscopic view of the pressure roller connecting rod in this embodiment.

[0060] like Figure 7 As shown, the roller connecting rod 1221 is generally cylindrical with a notch in the middle, and has a floating matching groove 12211 in the middle of the axial direction. When viewed from the side, the floating matching groove 12211 is a rectangular groove that penetrates along its extension direction. The bottom surface of the floating matching groove 12211 is rectangular, and the surface direction of the bottom surface is perpendicular to the radial direction of the roller connecting rod 1221. The two side walls of the floating matching groove 12211 are semicircular, and the surface direction of the side walls is perpendicular to the axial direction of the roller connecting rod 1221. The depth of the floating matching groove 12211 is approximately half of the diameter of the roller connecting rod 1221.

[0061] Two shallow stopper installation grooves 12212 are also provided on both sides of the floating matching groove 12211. The groove depth of the stopper installation groove 12212 is significantly smaller than that of the floating matching groove 12211. The bottom surface of the stopper installation groove 12212 is a plane parallel to the bottom surface of the floating matching groove 12211, and the bottom surface is provided with a stopper installation hole 12212a for installing the floating stopper 1224. The connecting line direction of the two stopper installation holes 12212a is consistent with the axial direction of the pressure roller connecting rod 1221.

[0062] The two pressure rollers 1222 are both cylindrical and are detachably mounted on the two ends of the pressure roller connecting rod 1221, that is, the pressure rollers 122 of this embodiment are segmented pressure rollers. The radius of the pressure rollers 1222 is smaller than the width of the side wall of the strip groove 221 of the support bar 22 (the smaller of the two side wall widths), and can abut against the two side walls of the strip groove 221 at the same time, thereby pressing the support bar 22. In this embodiment, the pressure rollers 1222 are made of anti-sticking material, which can be easily cleaned when glue is stuck, and can also be disassembled for replacement.

[0063] The two roller limiters 1223 are both cylindrical and detachably mounted on the two ends of the roller connecting rod 1221 . They can limit the roller member 1222 by abutting the axial end faces of the two roller limiters 1223 against the axial end faces of the roller member 1222 .

[0064] The floating limiter 1224 is strip-shaped, with the middle portion being a rectangular parallelepiped strip, and the two ends being rectangular parallelepiped with a width greater than the middle portion. The two ends are provided with mounting holes, and a rounded transition is formed between the two ends and the middle portion. The two surfaces of the floating limiter 1224 in the thickness direction are roughly planes. The two ends of the floating limiter 1224 are respectively fixed to the two limiter mounting grooves 12212 of the roller connecting rod 1221 by fasteners, and the end faces of one side of the two ends of the floating limiter 1224 are respectively abutted against the bottom surface (plane) of the limiter mounting groove 12212, so that the floating limiter 1224 is stably mounted on the roller connecting rod 1221. A strip-shaped through opening is formed between the middle portion of the floating limiter 1224 and the middle portion of the roller connecting rod 1221 (i.e., the floating matching groove 12211).

[0065] The pressing drive assembly 123 is used to drive the pressing roller 122 to press along a predetermined direction. The pressing drive assembly 123 includes two guide rods 1231 , a limit plate 1232 , a pressing plate 1233 and two compression springs 1234 .

[0066] The guide rod 1231 is a round rod, and the limit plate 1232 is a strip plate. One end of the two guide rods 1231 is fixed on the same side of the limit plate 1232, and the other ends of the two guide rods 1231 are fixed to the mounting holes at both ends of the pressure plate 1233 by fasteners, and the two guide rods 1231 pass through a pair of guide rod holes 1211 on the fixed seat 121. A bearing is also provided between the guide rod 1231 and the guide rod hole 1211. That is, the axial direction of the guide rod 1231 is perpendicular to the length direction of the fixed seat 121, and the two guide rods 1231 are parallel to each other. The guide rod 1231 can move along its axial direction, and the movement is limited by the limit plate 1232 (that is, it can move until the limit plate 1232 abuts against the fixed seat 121).

[0067] Figure 8 : is a three-dimensional diagram of the pressing plate in this embodiment, Fig. 9 It is a three-dimensional diagram of the pressing plate and the pressing roller in this embodiment.

[0068] like Figure 8 and Fig. 9As shown, the pressing plate 1233 is generally in the shape of a cuboid with a notch in the middle, and the four edges of the cuboid in the thickness direction are chamfered. The length of the pressing plate 1233 is greater than the diameter of the pressing roller connecting rod 1221, the width of the pressing plate 1233 is slightly smaller than the groove width of the floating matching groove 12211 (i.e., the distance between its two side walls), the overall thickness of the pressing plate 1233 is greater than the groove depth of the floating matching groove 12211, and the thickness of the middle part of the pressing plate 1233 (i.e., the thickness of the bottom of the floating matching groove 12311) is approximately equal to the groove depth of the floating matching groove 12211.

[0069] The middle part of the pressing plate 1233 in the length direction is provided with a floating limit groove 12331. When viewed from the side, the floating limit groove 12331 is a rectangular groove that penetrates along its extension direction. The bottom surface and two side walls of the floating limit groove 12331 are both rectangular, and the two side walls are respectively perpendicular to the bottom surface. The bottom surface of the floating limit groove 12331 is parallel to the surface in the thickness direction of the pressing plate 1233. The groove depth of the floating limit groove 12331 is about half of the thickness of the pressing plate 1233, and the groove width of the floating limit groove 12331 (i.e., the distance between its two side walls) is slightly larger than the width of the middle part of the floating limit member 1224 in the length direction. The notch of the floating limit groove 12331 is located at one surface in the thickness direction of the pressing plate 1233, and the other surface in the thickness direction of the pressing plate 1233 is a pushing surface 12334 for pushing the pressing roller connecting rod 1221, and the pushing surface 12334 is a plane.

[0070] The two ends of the pressing plate 1233 are respectively provided with a guide rod connecting hole 12332 penetrating along the thickness direction thereof and a spring limiting groove 12333 communicating therewith. The inner diameter of the spring limiting groove 12333 is larger than the inner diameter of the guide rod connecting hole 12332, so an annular step is formed between the two.

[0071] like Figure 7 As shown, the middle of the pressing plate 1233 is embedded in the floating matching groove 12211 of the pressing roller connecting rod 1221 and the pushing surface 12334 faces the bottom surface of the floating matching groove 12211, and the floating limiting groove 12331 on the pressing plate 1233 faces the outside of the floating matching groove 12211. The middle of the floating limiting member 1224 is embedded in the floating limiting groove 12331 of the pressing plate 1233, that is, the middle of the pressing plate 1233 is embedded in the through opening between the pressing roller connecting rod 1221 and the floating limiting member 1224.

[0072] like Fig. 9As shown, since the width of the pressing plate 1233 is slightly smaller than the width of the floating matching groove 12211, and the width of the middle part of the floating stopper 1224 is slightly smaller than the width of the floating stopper 12331, the pressing roller connecting rod 1221 can translate slightly relative to the pressing plate 1233 along the length direction of the pressing plate 1233, and the translation is limited by the floating stopper 12331 and the floating stopper 1224; the roller connecting rod 1221 can also deflect slightly relative to the thickness direction of the pressing plate 1233, and the deflection is also limited by the floating stopper 12331 and the floating stopper 1224. That is, the pressing roller 122 as a whole can translate and / or deflect slightly relative to the pressing plate 1233 within a predetermined range.

[0073] The compression spring 1234 is sleeved on the guide rod 1231, and one end of the compression spring 1234 abuts against the bottom of the spring limiting groove of the fixing seat 121, and the other end of the compression spring 1234 abuts against the bottom of the spring limiting groove 12333 of the pressing plate 1233. Under the pressure provided by the compression spring 1234 and the guiding action of the guide rod 1231, the pressing plate 1233 moves along the axial direction of the guide rod 1231 and in a direction away from the fixing seat 121. The pressure of the compression spring 1234 is calculated and verified by experiments to ensure that the best pressing effect can be achieved.

[0074] The pull ring assembly 124 is used for manpower or machinery to pull the pressure roller 122 in the opposite direction of the pressing, so as to remove the tensioning device 10 installed on the insulating plate 20. The pull ring assembly 124 includes a pull ring mounting plate 1241 and a pull ring member 1242.

[0075] The shape and size of the pull ring mounting plate 1241 are substantially the same as those of the limiting plate 1232 , and the two are overlapped along the thickness direction and fixedly connected by fasteners.

[0076] The pull ring 1242 is U-shaped, and its two ends are respectively fixed in the two mounting holes of the pull ring mounting plate 1241. The pull ring 1242 is an axisymmetric structure, and the direction of its central axis is consistent with the extension direction of the guide rod, and the central axis of the pull ring 1242 is located in the middle of the two guide rods.

[0077] like Figure 2 As shown, when in use, the ring puller 1242 is first pulled apart in the direction opposite to the direction indicated by the arrows D1 to D4 in the figure by human or mechanical means, so that the plurality of pressing rollers 122 are separated from each other, and after the tensioning device 10 in the assembled state is mounted on the marine insulating board 20, the ring puller 1242 is released. At this time, under the pressure of the compression spring 1234 and the guiding action of the guide rod 1231, the plurality of pressing rollers 122 respectively press the support bar 22 along the directions D1 to D4 and press it toward the strip groove 2111 at the corner of the insulating board body 21.

[0078] If the pressing roller 122 can only move along the direction D1 to D4, but cannot translate or deflect in other directions, it is difficult to press the support bar 22 well when there is a tolerance between the strip groove 2111 of the insulating plate body 21 and the support bar 22. For example, due to tolerance, the support bar 22 as a whole is slightly inclined relative to the extension direction of the strip groove 2111 of the insulating plate body 21, and the pressing roller 122 can only move along the direction D1 to D4, then the pressing roller 122 applies force to the support bar 22 at an angle, which may result in poor pressing effect and glue overflowing from the rear side of the support bar 22.

[0079] The floating connection assembly of the present embodiment can solve such a problem. According to the actual position of the support bar 22, when the compression spring 1234 presses the pressure roller 122 toward the strip groove 221 of the support bar 22, the floating connection assembly causes the pressure roller 122 to translate and / or deflect slightly relative to the pressure plate 1233, so that the entire radial side edges of the two pressure rollers 1222 can contact the two side walls of the strip groove 221 of the support bar 22 in the presence of tolerance, and generate a uniform pressing force on the support bar 22.

[0080] Fig.10 is a schematic diagram of a small translation of the pressing roller in this embodiment, Fig.11 It is a schematic diagram of a small deflection of the pressure roller in this embodiment.

[0081] like Fig.10 and Fig.11 As shown, specifically, when the actual position of the support bar 22 is slightly horizontally offset relative to its designed position (ideal position) due to tolerance, under the pressure and guiding action of the spring, the pressure roller 12 is pressed toward the strip groove 221 of the support bar 22, and according to the actual position of the support bar 22, the pressure roller 12 can be translated relative to the pressure plate 1233 along the length direction of the pressure plate 1233 (the direction shown by the arrow D5) according to the actual position of the support bar 22, and can be translated to one side of the middle part of the floating limit piece 1224 and abut against a side wall of the floating limit groove 12331.

[0082] When the actual position of the support bar 22 is slightly deflected relative to its designed position due to tolerance, under the pressure of the compression spring 1251, the pressure roller 12 is pressed toward the strip groove 221 of the support bar 22, and according to the actual position of the support bar 22, the pressure roller 12 can be deflected relative to the pressure plate 1233 with the central axis in the thickness direction of the pressure plate 1233 as the rotation axis (deflected in the direction indicated by the arrow D6), and can be deflected to one side of the middle part of the floating limit member 1224 and abut against the corner of one side wall of the floating limit groove 12331.

[0083] Moreover, under the spring pressure and guiding action, the pushing surface 12334 of the pressure plate 1233 abuts against the bottom of the floating matching groove 12211 of the pressure roller connecting rod 1221, so that the pressure roller 122 will not rotate about an axis parallel to the length direction of the pressure plate 1233, and the pressure roller 122 will not rotate along its own axis.

[0084] Functions and Effects of the Embodiments

[0085] According to the tensioning device for assembling the liquefied natural gas ship insulation board provided in this embodiment, it includes a frame and a plurality of clamping mechanisms, each of which includes a pressure roller and a clamping drive assembly, so that the pressure roller can clamp the support strip in the strip groove at the corner of the insulation board body along a predetermined direction. Further, since the pressure roller has a floating connection assembly, the pressure roller is floatingly connected to the pressure plate in the clamping drive assembly, so that the pressure roller can translate and / or axially deflect relative to the pressure plate within a predetermined range. Therefore, even if there is a tolerance between the strip groove at the corner of the insulation board body and the support strip, the pressure roller can be translated and / or deflected in the axial direction by a small amplitude translation and / or deflection, so that a good clamping effect can be achieved even in the presence of tolerance, effectively avoiding the situation that the glue between the support strip and the corner of the insulation board body overflows from one side due to uneven pressure, and improving the assembly accuracy of the ship insulation board.

[0086] In an embodiment, the floating connection assembly includes a pressure roller connector having a floating mating groove and a floating limit member. The pressure plate has a floating limit groove, and a small translation and / or deflection of the pressure roller can be achieved through the mutually embedded mating structure among the pressure plate, the pressure roller connector and the floating limit member. Such a floating connection structure is streamlined, has a small number of components, and is easy to manufacture and maintain.

[0087] Furthermore, since the bottom surface of the floating fitting groove on the pressure roller connecting rod is perpendicular to its axial direction, the pressure roller is pushed by the cooperation between a surface in the thickness direction of the pressure plate (pushing surface) and the bottom surface of the floating fitting groove. Therefore, it can also ensure that the pressure roller does not deflect in the axial direction of the guide rod, nor does it rotate along the pressure roller axis. In other words, while achieving adaptive tolerance, no unexpected deflection in other directions occurs, which is more stable and further ensures the clamping effect.

[0088] Furthermore, the clamping drive assembly uses two compression springs to provide pressure to push the pressure plate, and then push the pressure roller, and uses two parallel guide rods to guide the pressure plate during movement, so that the pressure plate can move stably along the predetermined direction (normal axis), and the structure is simple and easy to assemble and maintain.

[0089] Furthermore, the pressure roller adopts a segmented structure, and the two pressure roller parts are detachable, so the assembly is convenient, and the pressure roller parts can be replaced conveniently and quickly when they are stuck with glue or worn; and the pressure roller parts are made of anti-sticking material, so when they are stuck with glue, they can be easily cleaned to remove the glue, which makes the operation more convenient and makes the production efficiency higher.

[0090] Furthermore, the multiple support rods in the frame are made of metal square tubes, which have higher strength, making the tensioning device less likely to be damaged and deformed during use, with higher reliability and longer service life of the tensioning device. Since the support rods are less likely to be deformed due to stress, the operating accuracy of the clamping operation is also higher.

[0091] The above embodiments are only used to illustrate the specific implementation of the utility model, and the utility model is not limited to the description scope of the above embodiments. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

[0092] For example, in the above-mentioned embodiment, the pressure roller member is detachably mounted on the pressure roller connecting member. In an alternative solution, the pressure roller member may also be fixedly mounted on the pressure roller connecting member.

[0093] In the above embodiment, two mutually parallel guide rods are used to achieve the guiding function. In an alternative solution, other guiding structures in the prior art, such as guide grooves, etc., may also be used.

[0094] In the above embodiment, two compression springs are used to provide pressure. In an alternative solution, other elastic components or other forms of energy storage components in the prior art may also be used to provide pressure.

Claims

1. A tensioning device for assembling insulation panels for liquefied natural gas ships, characterized in that: include: A frame, used to be arranged on the outer periphery of the insulating plate body; as well as A plurality of pressing mechanisms are respectively arranged on the frame and are respectively used to press a plurality of support bars into the strip grooves at the corners of the insulating plate body; The pressing mechanism comprises a pressing roller and a pressing drive assembly for driving the pressing roller to press the support bar. The pressing drive assembly includes a pressing plate movable in a predetermined direction. The pressure roller comprises at least one pressure roller member and a floating connection assembly, The pressure roller member is connected to the pressure plate via the floating connection assembly, so that the pressure roller member can translate and / or deflect within a predetermined range relative to the pressure plate.

2. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 1, Features: in, The middle part of the pressing plate is provided with a floating limit groove. The floating connection assembly comprises: A pressure roller connecting rod, used for connecting the pressure roller member, having a floating matching groove, in which the middle part of the pressure plate is movably arranged; as well as The floating limiter has two ends respectively fixed on the pressure roller connecting rod, and the middle part is movably arranged in the floating limiter groove.

3. The liquefied natural gas ship insulation board assembly tensioning device according to claim 2, characterized in that: in, The floating limit groove extends along the width direction of the pressing plate and passes through. The middle portion of the floating limit member is arranged in the floating limit groove, and the width of the middle portion of the floating limit member is smaller than the groove width of the floating limit groove. The floating matching groove extends and penetrates in a direction perpendicular to the axial direction of the pressure roller connecting rod. The middle portion of the pressing plate is disposed in the floating fitting groove, and the width of the middle portion of the pressing plate is smaller than the groove width of the floating fitting groove.

4. The liquefied natural gas ship insulation board assembly tensioning device according to claim 2, characterized in that: in, The notch of the floating limit groove is located on one surface of the pressure plate in the thickness direction, and the other surface of the pressure plate in the thickness direction is a pushing surface, and the pushing surface faces the bottom surface of the floating matching groove. The bottom surface of the floating matching groove is perpendicular to the axial direction of the pressure roller connecting rod. The pushing surface and the bottom surface of the floating matching groove are both planes.

5. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 2, characterized in that: in, The pressure roller connecting rod also has two limiter installation grooves, which are respectively arranged on both sides of the floating matching groove. The bottom surfaces of the two position-limiting member installation grooves are plane and perpendicular to the bottom surface of the floating matching groove. The two ends of the floating limiter are respectively fixed to the two limiter installation grooves by fasteners. One end surface of both ends of the floating limiter is a plane and abuts against the bottom surface of the limiter installation groove.

6. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 2, Features: in, The compaction drive assembly also includes: A fixing seat, arranged at a corner of the frame, having two guide rod holes; Two guide rods are respectively inserted into the two guide rod holes, and two ends of the pressing plate are respectively connected to one end of the two guide rods; and Two compression springs are respectively sleeved on the two guide rods, and one end of the two compression springs is in contact with the fixing seat, and the other end is in contact with the pressing plate.

7. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 6, Features: in, The compaction drive assembly also includes: A limit plate, both ends of which are connected to the other ends of the two guide rods, and the limit plate and the pressure plate are respectively located on both sides of the fixing seat; as well as Two bearings are respectively arranged between the two guide rods and the two guide rod holes.

8. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 2, characterized in that: in, The pressure roller comprises at least two pressure roller members, both of which are arranged on the pressure roller connecting rod and are respectively located on both sides of the floating matching groove. The support bar has a strip-shaped groove, and the strip-shaped groove has two side walls. The two pressing rollers have the same outer diameter, and a radius corresponding to the outer diameter is smaller than a height of each of the two side walls.

9. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 8, characterized in that: in, The pressure roller is made of an anti-sticking material and is detachably mounted on the pressure roller connecting rod. The pressure roller further comprises two pressure roller limiting members which are detachably arranged at the two ends of the pressure roller connecting rod and are used to limit the pressure roller member.

10. The tensioning device for assembling insulation panels for liquefied natural gas ships according to claim 1, Features: in, The framework includes: Multiple support rods, all of which are metal square tubes; as well as A plurality of connecting plates are respectively connected between two adjacent support rods, and the clamping mechanism is arranged on the connecting plates.

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