A quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms

Abstract

This utility model discloses a tool for the rapid assembly and disassembly of ultra-large diameter flange bolts on offshore platforms. It includes: a variable-diameter inner ring and a variable-diameter outer ring concentrically positioned above the flange to be disassembled; an inner chain and an outer chain respectively housed in an outer receiving groove and an inner receiving groove; multiple anti-loosening driven sleeve heads and one driving sleeve head, each corresponding to a bolt to be disassembled; gears meshing with the inner and outer chains are respectively provided on the upper edge of the anti-loosening driven sleeve head and the middle portion of the driving sleeve head; hexagonal holes adapted to the bolt nuts to be disassembled are provided on the lower end faces of the anti-loosening driven sleeve head and the driving sleeve head; multiple nut stop blocks are detachably and evenly distributed on the edge of the lower plate of the flange to be disassembled; hexagonal plate openings adapted to clamp the nuts to be disassembled are provided on the multiple nut stop blocks. The beneficial effect of this utility model is that it enables the simultaneous assembly and disassembly of all bolts.

Description

Technical Field

[0001] This utility model relates to the field of bolt disassembly technology, and in particular to a tool for quick assembly and disassembly of ultra-large diameter flange bolts on offshore platforms. Background Technology

[0002] The traditional method of disassembling and assembling flange bolts diagonally, currently used on offshore oil and gas exploration platforms, is time-consuming, heavily influenced by maintenance space constraints, and inefficient. This technical bottleneck severely impacts the continuity of offshore oil and gas exploration, primarily in the following aspects: 1) Obstacles to bolt disassembly tools in confined spaces: Due to limited space on oil and gas exploration platforms, most pipeline maintenance spaces are quite small. Interference frequently occurs with bolt disassembly tools in confined spaces, rendering conventional pneumatic / electric socket wrenches unusable and hindering normal work. 2) The coexistence of single-piece decoupled disassembly and iterative fastener removal results in low work efficiency. The conventional method of disassembling and assembling flange bolts diagonally exhibits repetitive, single-point operation characteristics. Therefore, this work is time-consuming, causes operator fatigue, and fails to improve work efficiency. 3) The tool-object specific coupling mechanism leads to poor versatility: the tools used for disassembling blind flanges and valve flanges differ, resulting in single-point adaptation issues due to on-site process constraints, presenting a non-universal tool matching problem. For example, electric / pneumatic socket wrenches that are universally applicable to blind flanges are difficult to use in confined spaces around valve flanges due to their large tool size. In such cases, a pipe wrench or box wrench must be used for disassembly. Utility Model Content

[0003] The purpose of this utility model is to provide a tool for the rapid assembly and disassembly of ultra-large diameter flange bolts on offshore platforms. It is equipped with a variable diameter inner ring, a variable diameter outer ring, an inner chain, an outer chain, multiple anti-loosening driven sleeve heads, a driving sleeve head, and multiple nut stop blocks, which can realize the simultaneous assembly and disassembly of all bolts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution, including:

[0005] The variable diameter inner ring and the variable diameter outer ring are concentrically arranged above the flange to be disassembled; an outer receiving groove and an inner receiving groove are respectively provided on the outer periphery of the variable diameter inner ring and the inner periphery of the variable diameter outer ring.

[0006] The inner chain and the outer chain are respectively disposed in the outer receiving groove and the inner receiving groove;

[0007] Multiple driven anti-loosening sleeve heads and one driving sleeve head are provided, each corresponding to a bolt to be disassembled or assembled. Gears that mesh with the inner and outer chains are respectively provided on the upper edge of the driven anti-loosening sleeve head and the middle part of the driving sleeve head. The lower end faces of the driven anti-loosening sleeve head and the driving sleeve head are provided with hexagonal holes that fit the bolts and nuts to be disassembled or assembled. The multiple driven anti-loosening sleeve heads and the driving sleeve head are used to be respectively fitted onto the bolts and nuts to be disassembled or assembled.

[0008] Multiple nut stop blocks, each corresponding to a bolt to be disassembled; multiple nut stop blocks are detachably and evenly distributed on the edge of the lower plate of the flange to be disassembled; the multiple nut stop blocks are provided with hexagonal plate openings adapted to clamp the nuts to be disassembled, and the multiple nut stop blocks are used to fix the nuts to be disassembled.

[0009] The active socket head is provided with a hexagonal head for connection with a socket wrench. During disassembly and assembly, the socket wrench drives the active socket head to rotate through the hexagonal head. The active socket head drives the inner chain and outer chain, which in turn drive multiple anti-loosening driven socket heads to rotate, thus enabling the simultaneous disassembly and assembly of all bolts.

[0010] Preferably, the variable diameter inner ring and the variable diameter outer ring are each composed of multiple detachable arc-shaped segments, with matching connectors and slots at both ends of the arc-shaped segments.

[0011] Preferably, it also includes:

[0012] A semi-circular hollow tube, with multiple first positioning holes evenly distributed at both ends;

[0013] A semi-circular solid tube is arranged opposite to the semi-circular hollow tube. The outer periphery of the semi-circular solid tube is adapted to the inner cavity of the semi-circular hollow tube. Both ends of the semi-circular solid tube are inserted into the two ends of the semi-circular hollow tube. Second positioning holes are provided at both ends of the semi-circular solid tube.

[0014] Bolts, which may pass through the first positioning hole and the second positioning hole, lock the semi-circular hollow tube and the semi-circular solid tube.

[0015] Arc-shaped grooves are respectively arranged on the arc-shaped segment along the arc direction for the semi-arc hollow tube and the semi-arc solid tube to pass through.

[0016] Preferably, the variable diameter inner ring and the variable diameter outer ring are arranged above the flange to be disassembled via multiple bridging brackets, and the bridging brackets correspond one-to-one with the arc-shaped segments;

[0017] The bridging structure includes;

[0018] First vertical bar;

[0019] The first lower plate is horizontally positioned at the lower end of the first vertical rod;

[0020] The first upper plate is horizontally positioned above the first lower plate. The rear of the first upper plate has a first through hole through which the first vertical rod passes. The rear end of the first upper plate has a first side hole that communicates with the first through hole. The first upper plate is used to cooperate with the first lower plate to clamp onto the lower plate of the flange to be disassembled.

[0021] The first locking bolt passes through the first side hole and abuts against the first vertical rod, and is used to fix the position of the first upper plate on the first vertical rod;

[0022] The first horizontal bar is arranged horizontally. A second through hole is provided on the first horizontal bar for the upper part of the first vertical bar to pass through. A second side hole is provided at the rear end of the first horizontal bar, and the second side hole is connected to the second through hole. A third through hole and a fourth through hole are provided at the front and middle parts of the first horizontal bar, respectively. A third side hole and a fourth side hole are provided on the side wall corresponding to the third through hole and the fourth through hole, respectively.

[0023] The second locking bolt passes through the second side hole and abuts against the first vertical bar to lock the position of the first horizontal bar on the first vertical bar;

[0024] The upper ends of the second and third vertical rods pass through the third and fourth through holes, respectively, and the lower ends of the second and third vertical rods are connected to the corresponding arc segments.

[0025] The third and fourth locking bolts pass through the third and fourth side holes respectively and abut against the second and third vertical rods; they are used to lock the second vertical rod, the third vertical rod, and the first horizontal rod.

[0026] Preferably, the inner and outer chains are composed of multiple detachably connected chain link components.

[0027] Preferably, the nut stop block includes:

[0028] The second upper plate and the second lower plate are respectively arranged horizontally and vertically; a fourth vertical rod is arranged vertically between the rear of the second upper plate and the second lower plate; the distance between the second upper plate and the second lower plate is adapted to the thickness of the lower plate of the flange to be disassembled, and is used to clamp it on the lower plate.

[0029] The hexagonal plate opening is located on the inner edge of the second lower plate and is used to engage with the nut to be disassembled and fixedly hold the nut to be disassembled and fixed.

[0030] Preferably, the anti-detachment driven sleeve head includes:

[0031] A pair of U-shaped grooves are mirror images of each other on the cylinder wall of the anti-detachment driven sleeve head; shaft holes are respectively provided on the groove walls of the U-shaped grooves;

[0032] A pair of anti-detachment blocks, each with a rotating shaft on both sides, the rotating shafts extending into the shaft holes respectively;

[0033] An L-shaped structure is provided at the lower end of the anti-detachment block, and the rotating shaft is located at the upper 1 / 3 of the anti-detachment block. Under no external force, it naturally swings inward to prevent the nut from falling off.

[0034] The beneficial effects of this utility model are: it is equipped with a variable diameter inner ring, a variable diameter outer ring, an inner chain, an outer chain, multiple anti-loosening driven sleeve heads, a driving sleeve head, multiple nut stop blocks, and a nut anti-loosening device, which can realize the simultaneous disassembly and assembly of all bolts without them falling off. Attached Figure Description

[0035] Figure 1 This is a perspective view of a quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms according to this utility model.

[0036] Figure 2 This is an exploded view of a quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms, according to this utility model.

[0037] Figure 3 This is a three-dimensional sectional view of a quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms according to this utility model.

[0038] Figure 4 This is a three-dimensional sectional view of the anti-detachment driven sleeve head in this utility model.

[0039] Figure 5 This is a perspective view of the active sleeve head in this utility model.

[0040] Figure 6 This is a perspective view of the nut stop block in this utility model.

[0041] Figure 7 This is a perspective view of the bridge frame in this utility model.

[0042] Figure 8 This is a perspective view of the semi-circular hollow tube and the semi-circular solid tube in this utility model. Detailed Implementation

[0043] The utility model will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0044] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0045] like Figure 1-8 As shown, this utility model discloses a quick assembly and disassembly tool 1 for ultra-large diameter flange bolts on offshore platforms, comprising:

[0046] The variable diameter inner ring 110 and the variable diameter outer ring 120 are concentrically arranged above the flange 2 to be disassembled; the inner circumference of the variable diameter inner ring 110 and the variable diameter outer ring 120 are respectively provided with an outer receiving groove 111 and an inner receiving groove 121.

[0047] The inner chain 130 and the outer chain 140 are respectively disposed in the outer receiving groove 111 and the inner receiving groove 121;

[0048] Multiple driven anti-detachment sleeve heads 150 and one driven sleeve head 160 are respectively corresponding to the bolts 210 to be disassembled; the upper edge of the driven anti-detachment sleeve head 150 and the middle part of the driven sleeve head 160 are respectively provided with gears 151 and 161 that mesh with the inner chain 130 and the outer chain 140; the lower end face of the driven anti-detachment sleeve head 150 and the driven sleeve head 160 are provided with hexagonal holes that are adapted to the nuts of the bolts 210 to be disassembled; the multiple driven anti-detachment sleeve heads 150 and the driven sleeve head 160 are used to be respectively fitted onto the nuts of the bolts 210 to be disassembled.

[0049] Multiple nut stop blocks 170 are provided, each corresponding to a bolt 210 to be disassembled; the multiple nut stop blocks 170 are detachably and evenly distributed on the edge of the lower plate of the flange 2 to be disassembled; the multiple nut stop blocks 170 are provided with hexagonal plate openings 171 adapted to clamp the nuts to be disassembled, and the multiple nut stop blocks 170 are used to fix the nuts to be disassembled.

[0050] The active socket head 160 is provided with a hexagonal head 162 for connecting to a socket wrench. During disassembly and assembly, the socket wrench drives the active socket head 160 to rotate through the hexagonal head. The active socket head 160 drives the inner chain 130 and the outer chain 140. The inner chain 130 and the outer chain 140 drive multiple anti-loosening driven socket heads 150 to rotate, so as to achieve simultaneous disassembly and assembly of all bolts 210.

[0051] During use, the variable diameter inner ring 110 and variable diameter outer ring 120 are concentrically positioned above the flange 2 to be disassembled via a bridge frame 180. Multiple anti-loose driven socket heads 150 and one active socket head 160 are respectively fitted onto the nuts of the bolts 210 to be disassembled. Then, multiple nut stop blocks 170 are used to fix the nuts to be disassembled. Then, the hexagonal head 162 of the active socket head 160 is connected to a socket wrench. During disassembly and assembly, the socket wrench drives the active socket head 160 to rotate. The active socket head 160 drives the inner chain 130 and the outer chain 140. The inner chain 130 and the outer chain 140 drive the multiple anti-loose driven socket heads 150, thereby achieving simultaneous disassembly and assembly of all bolts 210.

[0052] In another embodiment, the variable diameter inner ring 110 and the variable diameter outer ring 120 are each composed of multiple detachable arc segments, with matching connectors and slots at both ends of the arc segments.

[0053] In another embodiment, the system further includes: a semi-circular hollow tube 191, with a plurality of first positioning holes 191a evenly distributed at both ends; a semi-circular solid tube 192, which is disposed opposite to the semi-circular hollow tube 191, the outer periphery of the semi-circular solid tube 192 being adapted to the inner cavity of the semi-circular hollow tube 191, and both ends of the semi-circular solid tube 192 being inserted into the two ends of the semi-circular hollow tube 191; second positioning holes are provided at both ends of the semi-circular solid tube 192; bolts 193, which can selectively pass through the first positioning holes 191a and the second positioning holes to lock the semi-circular hollow tube 191 and the semi-circular solid tube 192; and arc-shaped grooves, which are respectively disposed on the arc segment along the arc direction for the semi-circular hollow tube 191 and the semi-circular solid tube 192 to pass through.

[0054] In another embodiment, the variable diameter inner ring 110 and the variable diameter outer ring 120 are arranged above the flange 2 to be disassembled via multiple bridging brackets 180, each bridging bracket 180 corresponding to an arc segment.

[0055] The bridging frame 180 includes: a first vertical rod 183; a first lower plate 182, which is horizontally arranged at the lower end of the first vertical rod 183; a first upper plate 181, which is horizontally arranged above the first lower plate 182, and the rear part of the first upper plate 181 is provided with a first through hole for the first vertical rod 183 to pass through; a first side hole is provided at the rear end of the first upper plate 181, and the first side hole communicates with the first through hole; the first upper plate 181 is used to cooperate with the first lower plate 182 to clamp on the lower plate of the flange to be disassembled; a first locking bolt 187a, which passes through the first side hole and abuts against the first vertical rod 183 to fix the position of the first upper plate 181 on the first vertical rod 183; a first horizontal rod 184, which is horizontally arranged, and the first horizontal rod 184 is provided with a second through hole for the upper part of the first vertical rod 183 to pass through, and a first side hole is provided at the rear end of the first horizontal rod 184. The first vertical bar 184 has a second side hole that communicates with the second through hole. A third through hole and a fourth through hole are respectively provided at the front and middle parts of the first horizontal bar 184, and third side holes and fourth side holes are respectively provided on the sidewalls corresponding to the third and fourth through holes. A second locking bolt 187b passes through the second side hole and abuts against the first vertical bar 184 to lock the position of the first horizontal bar 184 on the first vertical bar 183. A second vertical bar 185 and a third vertical bar 186 have their upper ends passing through the third and fourth through holes respectively, and their lower ends are respectively connected to corresponding arc-shaped segments. A third locking bolt 187b and a fourth locking bolt 187c pass through the third and fourth side holes respectively and abut against the second vertical bar 185 and the third vertical bar 186; these are used to lock the second vertical bar 185, the third vertical bar 186, and the first horizontal bar 184.

[0056] In another embodiment, the inner chain 130 and the outer chain 140 are composed of multiple detachably connected chain link components.

[0057] In another embodiment, the nut stop block 170 includes: a second upper plate 172 and a second lower plate 173, which are respectively arranged horizontally and vertically; a fourth vertical rod 174 is vertically arranged between the rear parts of the second upper plate 172 and the second lower plate 173; the distance between the second upper plate 172 and the second lower plate 173 is adapted to the thickness of the lower plate of the flange 2 to be disassembled, and is used to clamp on the lower plate; a hexagonal plate opening 171 is arranged on the inner edge of the second lower plate 173, and is used to engage with the nut to be disassembled, and to fix the nut to be disassembled.

[0058] In another embodiment, the anti-detachment driven sleeve head 150 includes: a pair of U-shaped grooves 152, which are mirror images of the sleeve wall of the anti-detachment driven sleeve head; shaft holes 153 are respectively provided on the groove walls of the U-shaped grooves; a pair of anti-detachment blocks 154, each with a rotating shaft 155 on both sides, the rotating shaft 155 extending into the shaft hole 153; wherein, an L-shaped structure 154a is provided at the lower end of the anti-detachment block 154, and the rotating shaft 155 is located at the upper 1 / 3 of the anti-detachment block 154, naturally swinging inward without external force to prevent the nut from falling off.

[0059] In summary, this utility model provides a quick assembly and disassembly tool 1 for ultra-large diameter flange bolts on offshore platforms. It is equipped with a variable diameter inner ring 110, a variable diameter outer ring 120, an inner chain 130, an outer chain 140, multiple anti-loosening driven sleeve heads 150, a driving sleeve head 160, and multiple nut stop blocks 170, which can achieve simultaneous assembly and disassembly of all bolts without them falling off.

[0060] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A tool for quick assembly and disassembly of extra-large diameter flange bolts for offshore platforms, characterized in that, include: The variable diameter inner ring and the variable diameter outer ring are concentrically arranged above the flange to be disassembled; an outer receiving groove and an inner receiving groove are respectively provided on the outer periphery of the variable diameter inner ring and the inner periphery of the variable diameter outer ring. The inner chain and the outer chain are respectively disposed in the outer receiving groove and the inner receiving groove; Multiple driven anti-loosening sleeve heads and one driving sleeve head are provided, each corresponding to a bolt to be disassembled or assembled. Gears that mesh with the inner and outer chains are respectively provided on the upper edge of the driven anti-loosening sleeve head and the middle part of the driving sleeve head. The lower end faces of the driven anti-loosening sleeve head and the driving sleeve head are provided with hexagonal holes that fit the bolts and nuts to be disassembled or assembled. The multiple driven anti-loosening sleeve heads and the driving sleeve head are used to be respectively fitted onto the bolts and nuts to be disassembled or assembled. Multiple nut stop blocks, each corresponding to a bolt to be disassembled; multiple nut stop blocks are detachably and evenly distributed on the edge of the lower plate of the flange to be disassembled; the multiple nut stop blocks are provided with hexagonal plate openings adapted to clamp the nuts to be disassembled, and the multiple nut stop blocks are used to fix the nuts to be disassembled. The active socket head is provided with a hexagonal head for connection with a socket wrench. During disassembly and assembly, the socket wrench drives the active socket head to rotate through the hexagonal head. The active socket head drives the inner chain and outer chain, which in turn drive multiple anti-loosening driven socket heads to rotate, thus enabling the simultaneous disassembly and assembly of all bolts.

2. The tool for quick assembly and disassembly of extra-large diameter flange bolts for offshore platforms according to claim 1, characterized in that: The variable diameter inner ring and the variable diameter outer ring are each composed of multiple detachable arc-shaped segments, with matching connectors and slots at both ends of the arc-shaped segments.

3. The tool for quick assembly and disassembly of extra-large diameter flange bolts for offshore platforms according to claim 2, characterized in that, Also includes: A semi-circular hollow tube, with multiple first positioning holes evenly distributed at both ends; A semi-circular solid tube is arranged opposite to the semi-circular hollow tube. The outer periphery of the semi-circular solid tube is adapted to the inner cavity of the semi-circular hollow tube. Both ends of the semi-circular solid tube are inserted into the two ends of the semi-circular hollow tube. Second positioning holes are provided at both ends of the semi-circular solid tube. Bolts, which may pass through the first positioning hole and the second positioning hole, lock the semi-circular hollow tube and the semi-circular solid tube. Arc-shaped grooves are respectively arranged on the arc-shaped segment along the arc direction for the semi-arc hollow tube and the semi-arc solid tube to pass through.

4. The quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms according to claim 2, characterized in that: The variable diameter inner ring and variable diameter outer ring are arranged above the flange to be disassembled via multiple bridging brackets, and each bridging bracket corresponds to one of the arc segments. The bridging structure includes; First vertical bar; The first lower plate is horizontally positioned at the lower end of the first vertical rod; The first upper plate is horizontally positioned above the first lower plate. The rear of the first upper plate has a first through hole through which the first vertical rod passes. The rear end of the first upper plate has a first side hole that communicates with the first through hole. The first upper plate is used to cooperate with the first lower plate to clamp onto the lower plate of the flange to be disassembled. The first locking bolt passes through the first side hole and abuts against the first vertical rod, and is used to fix the position of the first upper plate on the first vertical rod; The first horizontal bar is arranged horizontally. A second through hole is provided on the first horizontal bar for the upper part of the first vertical bar to pass through. A second side hole is provided at the rear end of the first horizontal bar, and the second side hole is connected to the second through hole. A third through hole and a fourth through hole are provided at the front and middle parts of the first horizontal bar, respectively. A third side hole and a fourth side hole are provided on the side wall corresponding to the third through hole and the fourth through hole, respectively. The second locking bolt passes through the second side hole and abuts against the first vertical bar to lock the position of the first horizontal bar on the first vertical bar; The upper ends of the second and third vertical rods pass through the third and fourth through holes, respectively, and the lower ends of the second and third vertical rods are connected to the corresponding arc segments. The third and fourth locking bolts pass through the third and fourth side holes respectively and abut against the second and third vertical rods; they are used to lock the second vertical rod, the third vertical rod, and the first horizontal rod.

5. The quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms according to claim 1, characterized in that: The inner and outer chains are composed of multiple detachable chain link components.

6. The tool for quick assembly and disassembly of extra-large diameter flange bolts for offshore platforms according to claim 1, characterized in that, The nut stop block includes: The second upper plate and the second lower plate are respectively arranged horizontally and vertically; a fourth vertical rod is arranged vertically between the rear of the second upper plate and the second lower plate; the distance between the second upper plate and the second lower plate is adapted to the thickness of the lower plate of the flange to be disassembled, and is used to clamp it on the lower plate. The hexagonal plate opening is located on the inner edge of the second lower plate and is used to engage with the nut to be disassembled and fixedly hold the nut to be disassembled and fixed.

7. The quick assembly and disassembly tool for ultra-large diameter flange bolts on offshore platforms according to claim 1, characterized in that, The anti-detachment driven sleeve head includes: A pair of U-shaped grooves are mirror images of each other on the cylinder wall of the anti-detachment driven sleeve head; shaft holes are respectively provided on the groove walls of the U-shaped grooves; A pair of anti-detachment blocks, each with a rotating shaft on both sides, the rotating shafts extending into the shaft holes respectively; An L-shaped structure is provided at the lower end of the anti-detachment block, and the rotating shaft is located at the upper 1 / 3 of the anti-detachment block. Under no external force, it naturally swings inward to prevent the nut from falling off.

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