Pipe arranging machine

Abstract

The utility model relates to a pipe racking machine which comprises a cofferdam assembly, a track assembly and a gantry crane assembly, and the track assembly comprises a track fixing frame, a track folding frame and a folding lug base assembly; the folding lug base assembly comprises a fixed lug base, a movable lug base and a rotating pin shaft set, the fixed lug base is fixed to the rail fixing frame, the movable lug base is fixed to the rail folding frame, the folding lug base assembly can achieve bidirectional overturning of the rail folding frame relative to the rail fixing frame, and in the oil pipe feeding and discharging process, a first pin shaft located on the inner side is detached; the rail folding frame is outwards turned and opened by taking the second pin shaft as a rotating center line, so that the oil pipe is convenient to load and unload, and interference with the rail folding frame in the loading and unloading process is avoided; in the transportation process of the pipe racking machine, the second pin shafts located on the outer side are detached, the rail folding frames on the two sides are closed inwards with the corresponding first pin shafts as the rotation center lines, the overall size of the pipe racking machine is reduced, transportation and carrying are convenient, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil wells, in particular to a pipe laying machine. Background Art

[0002] In the process of oil well repair, a pipe laying mechanism is required to send the oil pipe to the well repair platform or send it down the platform for placement. The patent document with patent number CN 215860046 U discloses a gantry-type ground pipe laying device, which is provided with folding ears on the folding track, which is used to close the folding tracks on both sides inward during the transportation of the pipe laying device to facilitate transportation.

[0003] The document does not further elaborate on the specific structure of the folding ear seat. Apart from that, it can only achieve one-sided folding. During the process of the oil pipe being moved up and down from the pipe laying device, due to limited operating space, there is a possibility that the oil pipe may interfere with the folding track on the pipe laying machine, and even collide, causing a safety accident. There are high requirements for the up and down travel of the oil pipe and the accuracy of the operator's operation. Summary of the invention

[0004] The utility model aims to provide a pipe laying machine to solve the problems existing in the prior art that when the oil pipe is put up and down the pipe laying machine, due to limited operating space, there is interference and collision on the folding track, causing safety accidents.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] The utility model proposes a pipe laying machine, which comprises:

[0007] Cofferdam assembly;

[0008] A track assembly, comprising a first track assembly and a second track assembly arranged at both ends of the cofferdam assembly, wherein the first track assembly and the second track assembly each comprise a track fixing frame, a track folding frame, and at least one folding ear seat assembly arranged along a height direction of the track fixing frame;

[0009] The bottom of the track fixing frame is fixed on the cofferdam assembly, and the track folding frame is connected to the track fixing frame via a folding ear seat assembly;

[0010] The folding ear seat assembly includes a fixed ear seat, a movable ear seat and a rotating pin shaft group, the fixed ear seat is fixed to the track fixing frame, the movable ear seat is fixed to the track folding frame, the fixed ear seat includes a first fixing part and a second fixing part arranged on both sides of the track fixing frame, the rotating pin shaft group includes a first pin shaft and a second pin shaft, and the first fixing part and / or the second fixing part are connected to the movable ear seat through the first pin shaft and the second pin shaft respectively;

[0011] The gantry assembly is movably connected to the track assembly.

[0012] In some embodiments of the present application, the movable ear seat includes a first movable part and a second movable part, and the first movable part and the second movable part are detachably connected to the first pin shaft and the second pin shaft respectively.

[0013] In some embodiments of the present application, the cofferdam assembly includes a main cofferdam assembly and a secondary cofferdam assembly, the main cofferdam assembly and the secondary cofferdam assembly are connected by a cofferdam buckle plate, the bottom of the track fixing frame is connected to the main cofferdam assembly, and in the working state, the track folding frame is supported on the secondary cofferdam assembly.

[0014] In some embodiments of the present application, two groups of folding ear seat assemblies are respectively arranged on the first track assembly and the second track assembly at intervals along the height direction corresponding to the track fixing frame.

[0015] In some embodiments of the present application, a mounting groove is formed on the movable ear seat, and the fixed ear seat is connected in the mounting groove.

[0016] In some embodiments of the present application, the track assembly includes an extended state, a working state, and a closed state;

[0017] In the unfolded state, the second fixed portion located outside the track fixing frame is hinged to the second movable portion through the second pin shaft, and the first fixed portion located inside the track fixing frame is separated from the first movable portion, so that the track folding frame unfolds outward at an angle with the second pin shaft as the rotation center;

[0018] In the working state, the first fixed part and the first movable part are connected by the first pin shaft, and the second fixed part and the second movable part are connected by the second pin shaft, so that the track folding frame is located on the extension line of the track fixing frame;

[0019] In the closed state, the first fixed portion is hinged to the first movable portion via the first pin shaft, and the second fixed portion is separated from the second movable portion, so that the track folding frame is closed inwardly at an angle with the first pin shaft as the rotation center.

[0020] In some embodiments of the present application, a folding base frame and a movable base frame movably connected to the bottom of the folding base frame along a height direction of the folding base frame are provided at the bottom of the track folding frame.

[0021] In some embodiments of the present application, the folding base frame is provided with a plurality of fixed positions at intervals along its height direction, and the movable base frame is provided with a plurality of adjustment positions at intervals along its height direction. The adjustment positions are connected to different fixed positions by fasteners to adjust the position of the movable base frame.

[0022] In some embodiments of the present application, the folding base includes a first base and a second base, a movable guide rail is formed between the first base and the second base, the movable base portion is inserted into the movable guide rail, a fixed plate is formed on one side of the movable base, the fixed plate is in contact with and connected to one side of the first base and the second base, and the adjustment position is located on the fixed plate.

[0023] In some embodiments of the present application, a plurality of cross arm supports are arranged at intervals along the length direction of the cofferdam assembly for supporting the oil pipe.

[0024] Compared with the prior art, the advantages and positive effects of the utility model are:

[0025] The pipe laying machine involved in the present application can realize the bidirectional flipping of the track folding frame relative to the track fixing frame through the folding ear seat assembly. During the process of loading and unloading the oil pipe, the first pin shaft located on the inside is disassembled, and the track folding frame is flipped outward with the second pin shaft as the rotation center line, which is convenient for loading and unloading the oil pipe and avoids interference with the track folding frame during the loading and unloading process, which is conducive to increasing the working space and reducing the operating experience requirements of the operator;

[0026] During the transportation of the pipe laying machine, the second pin shaft located on the outside is disassembled, and the track folding frames on both sides are closed inward with the corresponding first pin shaft as the rotation center line. In this way, the overall size of the pipe laying machine is reduced, which is convenient for transportation and handling, reduces transportation costs, and greatly improves safety and stability. In addition, the folding ear seat assembly can be modified on the basis of the existing oil pipe machine, with low modification cost and good effect.

[0027] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the pipe laying machine proposed by the utility model;

[0030] Figure 2 yes Figure 1 Schematic diagram of the disassembly of the pipe laying machine;

[0031] Figure 3 1. It is a schematic diagram of the unfolded state of the track folding frame;

[0032] Figure 4 It is a schematic diagram of the closing process of the track folding frame;

[0033] Figure 5 1. It is a schematic diagram of the closed state of the track folding frame;

[0034] Figure 6 It is a schematic diagram of the connection between the track folding frame and the track fixing frame;

[0035] Figure 7 is a schematic diagram of the structure of the folding ear seat assembly;

[0036] Figure 8 This is a schematic diagram of the disassembly of the folding ear seat assembly;

[0037] Fig. 9 It is one of the schematic diagrams of the structure of the mobile ear seat;

[0038] Fig.10 This is the second schematic diagram of the movable ear seat structure;

[0039] Fig.11 1. It is a schematic diagram of the structure of the fixed ear seat;

[0040] Fig.12 It is a schematic diagram of the disassembly of the folding base frame and the mobile base frame;

[0041] Fig.13 is a schematic diagram of the mobile base structure;

[0042] In the figure,

[0043] 100, cofferdam assembly; 110, main cofferdam assembly; 120, auxiliary cofferdam assembly; 130, cofferdam gusset plate; 140, cross arm support;

[0044] 200, track assembly; 201, first track assembly; 202, second track assembly;

[0045] 210, track fixing frame; 211, fixed track section; 212, supporting frame;

[0046] 220, track folding rack;

[0047] 221, connect the chassis;

[0048] 222, moving track segment;

[0049] 223, folding base frame; 2231, fixed position; 2232, movable guide rail;

[0050] 224, movable chassis; 2241, fixed plate; 2242, adjustment position; 2243, support base;

[0051] 225. Fasteners;

[0052] 230, folding ear seat assembly;

[0053] 231, fixed ear seat; 2311, first fixed part; 2312, second fixed part; 2313, pin cylinder; 2314, cut corner; 2315, middle connecting part;

[0054] 232, movable ear seat; 2321, first movable part; 2322, second movable part; 2323, mounting groove part;

[0055] 233, rotating pin shaft group; 2331, first pin shaft; 2332, second pin shaft;

[0056] 300. Gantry machine assembly. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0063] refer to Figure 1 , Figure 2 The present application proposes a pipe laying machine, which includes a cofferdam assembly 100, a track assembly 200 and a gantry assembly 300. The cofferdam assembly 100 is supported on the ground and is used to provide a foundation for supporting the entire pipe laying machine. The track assembly 200 is arranged on both sides of the cofferdam assembly 100. The gantry assembly 300 is movably connected to the track assembly 200 and moves along the track assembly 200 to arrange the oil pipes.

[0064] The cofferdam assembly 100 is a frame structure arranged on the ground. The cofferdam assembly 100 includes a main cofferdam assembly 110 and an auxiliary cofferdam assembly 120. The number of the auxiliary cofferdam assemblies 120 is set according to actual needs. The cofferdam assembly 100 is composed of the main cofferdam assembly 110 and the auxiliary cofferdam assembly 120, which is convenient for processing and transportation.

[0065] The main cofferdam assembly 110 and the auxiliary cofferdam assembly 120 are arranged in sequence, and the adjacent main cofferdam assemblies 110 and auxiliary cofferdam assemblies 120 and the auxiliary cofferdam assemblies 120 are connected by cofferdam buckle plates 130 .

[0066] Specific reference Figure 2 A plurality of cross arm supports 140 are arranged at intervals along the length direction of the cofferdam assembly 100 for supporting the oil pipe.

[0067] refer to Figure 3-Figure 6 The track assembly 200 includes a first track assembly 201 and a second track assembly 202 arranged at both ends of the cofferdam assembly 100. The first track assembly 201 and the second track assembly 202 both include a track fixing frame 210, a track folding frame 220, and at least one folding ear seat assembly 230 arranged along the height direction of the track fixing frame 210.

[0068] Two groups of folding ear seat assemblies 230 are respectively arranged on the first track assembly 201 and the second track assembly 202 along the height direction of the corresponding track fixing frame 210 .

[0069] Combination Figure 1 For ease of understanding, the length direction of the track assembly 200 is defined as the X direction, the length direction of the cofferdam assembly 100 is defined as the Y direction, and the height direction of the track assembly 200 is defined as the Z direction.

[0070] That is, the first track assembly 201 and the second track assembly 202 are arranged at intervals at both ends of the cofferdam assembly 100 along the Y direction.

[0071] The bottoms of the track fixing frames 210 of the first track assembly 201 and the second track assembly 202 are both fixed on the cofferdam assembly 100 , specifically, fixed on both ends of the main cofferdam assembly 110 .

[0072] refer to Figure 7 Specifically, the track fixing frame 210 includes a supporting frame 212 and a fixed track segment 211 horizontally arranged on the supporting frame 212, and the bottom of the supporting frame 212 is fixed on the main cofferdam assembly 110.

[0073] The track folding frame 220 is connected to the track fixing frame 210 via a folding ear seat assembly 230 .

[0074] The track folding frame 220 includes a connecting base frame 221 and a movable track segment 222 , and the folding ear seat assembly 230 connects the connecting base frame 221 with the supporting stand 212 .

[0075] In order to ensure stable support, at least two supporting frames 212 are provided along the X direction, and the connecting base frame 221 is connected to the adjacent supporting frames 212 through the folding ear seat assembly 230 .

[0076] The track assembly 200 includes an extended state, a working state and a closed state.

[0077] refer to Figure 3 In the unfolded state, the track folding frame 220 is unfolded outward at an angle under the action of the folding ear seat assembly 230 to facilitate loading and unloading of the oil pipe.

[0078] refer to Figure 1 In the working state, the movable track segment 222 on the track folding frame 220 is in a straight line with the fixed track segment 211, and the gantry assembly 300 moves along the movable fixed track segment 211 and the movable track segment 222 to arrange the oil pipe.

[0079] refer to Figure 5 In the closed state, the track folding frame 220 is closed inwardly under the action of the folding ear seat assembly 230, which facilitates the transportation of the entire pipe laying machine.

[0080] In order to achieve the above purpose, the folding ear seat assembly 230 needs to be able to be flipped and opened in two directions.

[0081] refer to Figure 7-Figure 11 Specifically, each folding ear seat assembly 230 arranged along the height direction of the track fixing frame 210 includes a fixed ear seat 231, a movable ear seat 232 and a rotating pin shaft group 233.

[0082] The fixed ear seat 231 is fixed on the track fixing frame 210, and the movable ear seat 232 is fixed on the track folding frame 220. The fixed ear seat 231 and the movable ear seat 232 can be connected and fixed by welding or other mechanical connection methods.

[0083] In order to facilitate welding, the track fixing frame 210 and the connecting base frame 221 are both square support column structures, and the fixed ear seat 231 and the movable ear seat 232 are respectively connected to the adjacent connecting surfaces of the track fixing frame 210 and the connecting base frame 221.

[0084] The fixing ear seat 231 includes a first fixing portion 2311 and a second fixing portion 2312 which are arranged opposite to each other at two sides of the track fixing frame 210 . The first fixing portion 2311 and the second fixing portion 2312 extend in a direction away from the track folding frame 220 .

[0085] The ends of the first fixing portion 2311 and the second fixing portion 2312 are formed with cut corners 2314 to reduce the weight of the fixing ear seat 231 .

[0086] The rotating pin shaft group 233 includes a first pin shaft 2331 and a second pin shaft 2332 , and the first fixing portion 2311 and the second seat are rotatably connected to the movable ear seat 232 through the first pin shaft 2331 and the second pin shaft 2332 , respectively.

[0087] The movable ear seat 232 includes a first movable portion 2321 and a second movable portion 2322 , and the first movable portion 2321 and the second movable portion 2322 are connected to the first pin shaft 2331 and the second pin shaft 2332 , respectively.

[0088] Considering the surrounding conditions during the specific rotation of the track folding frame 220, the length of the first fixing portion 2311 located on the inner side is designed to be greater than the length of the first fixing portion 2311 to avoid interference with other working parts in the open state.

[0089] The specific dimensions of the first fixing portion 2311 and the second fixing portion 2312 are designed according to actual conditions.

[0090] Correspondingly, the length of the first movable part 2321 is also longer than that of the second movable part 2322 . The first movable part 2321 is connected to the first fixed part 2311 via a first pin shaft 2331 , and the second movable part 2322 is connected to the second fixed part 2312 via a second pin shaft 2332 .

[0091] Before unfolding or closing, the first pin shaft 2331 or the second pin shaft 2332 is disassembled from the folding ear seat assembly 230 .

[0092] Specifically, before unfolding, each first pin shaft 2331 located inside the track fixing frame 210 is removed, and the track folding frame 220 is unfolded outward at an angle with the corresponding second pin shaft 2332 as the rotation center.

[0093] In the working state, the first pin shaft 2331 and the second pin shaft 2332 are both connected to the folding ear seat assembly 230 , and the track folding frame 220 is located on the extension line of the track fixing frame 210 .

[0094] Before closing, each second pin shaft 2332 located outside the track fixing frame 210 is removed, and the track folding frame 220 is closed at an angle inwardly with the corresponding first pin shaft 2331 as the rotation center.

[0095] In order to ensure the structural strength of the folding ear frame assembly while minimizing its weight, in some embodiments of the present application, the fixed ear seat 231 is designed to include two upper and lower ear plates, and the two ear plates are connected and fixed by a vertical middle connecting portion 2315.

[0096] A pin shaft cylinder 2313 is provided between the first fixing parts 2311 between the two ear plates and between the two second fixing parts 2312, so that the entire fixing ear seat 231 is a frame structure, which is beneficial to reducing its weight.

[0097] Similarly, the movable ear seat 232 is also a frame structure formed by splicing ear plates, and a mounting groove portion 2323 opening toward the fixed ear seat 231 is formed thereon, and the fixed ear seat 231 is connected in the mounting groove portion 2323 .

[0098] The first movable portion 2321 and the second movable portion 2322 are formed with penetrating pin holes, and the first pin shaft 2331 and the second pin shaft 2332 respectively pass through the corresponding pin holes and the pin shaft cylinder 2313 to connect the movable ear seat 232 and the fixed ear seat 231 .

[0099] In addition, in some other embodiments, the pin shaft cylinder 2313 is arranged on the movable ear seat 232, and the corresponding mounting groove portion 2323 and the pin hole are arranged on the fixed ear seat 231, which can also achieve the same connection effect.

[0100] refer to Fig.12 , Fig.13 In other embodiments of the present application, in order to provide support for the track folding frame 220 during operation and to prevent friction with the cofferdam assembly 100 during the unfolding and closing process, the present application also provides a folding base frame 223 and a movable base frame 224 on the track folding frame 220.

[0101] The folding base frame 223 is disposed at the bottom of the moving track section 222 and is spaced apart from the connecting base frame 221 . The moving base frame 224 is movably connected to the folding base frame 223 along a height direction of the folding base frame 223 .

[0102] A support base 2243 is provided at the bottom of the movable base frame 224 for supporting and connecting to the cofferdam assembly 100 .

[0103] In the working state, after the track folding frame 220 is rotated into place, the movable base frame 224 moves downward so that its supporting base 2243 is fixed on the cofferdam assembly 100 to provide auxiliary support for the movable track segment 222 .

[0104] In the non-working state (before unfolding or closing), the movable base frame 224 moves upward, and the bottom is separated from the cofferdam assembly 100, so as to facilitate the rotation of the track folding frame 220.

[0105] Specifically, the folding base frame 223 is provided with a plurality of fixed positions 2231 at intervals along its height direction, and the movable base frame 224 is provided with a plurality of adjustment positions 2242 at intervals along its height direction. The adjustment positions 2242 are connected to different fixed positions 2231 through fasteners 225 to adjust the position of the movable base frame 224.

[0106] Specifically, in order to facilitate the upward and downward movement of the movable base frame 224 , the folding base frame 223 includes a first base frame and a second base frame, a movable guide rail 2232 is formed between the first base frame and the second base frame, and the upper end of the movable base frame 224 is inserted into the movable guide rail 2232 .

[0107] A fixing plate 2241 is formed on one side of the movable base frame 224 . The fixing plate 2241 is in contact with one side of the first base frame and the second base frame. The adjustment position 2242 is located on the fixing plate 2241 .

[0108] The first base frame and the second base frame are both provided with fixing positions 2231, and the adjustment positions 2242 are respectively provided at positions corresponding to the fixing plate 2241 and the first base frame and the second base frame, so as to improve the stability of the connection.

[0109] The pipe laying machine involved in the present application can realize the bidirectional flipping of the track folding frame 220 relative to the track fixing frame 210 through the folding ear seat assembly 230. During the process of loading and unloading the oil pipe, the first pin shaft 2331 located on the inside is disassembled, and the track folding frame 220 is flipped outward with the second pin shaft 2332 as the rotation center line, which is convenient for loading and unloading the oil pipe and avoids interference with the track folding frame 220 during loading and unloading, which is beneficial to increasing the working space; during the transportation of the pipe laying machine, the second pin shaft 2332 located on the outside is disassembled, and the track folding frames 220 on both sides are closed inward with the corresponding first pin shaft 2331 as the rotation center line. Then, the overall size of the pipe laying machine is reduced, which is convenient for transportation and handling, reduces transportation costs, and greatly improves safety and stability.

[0110] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0111] The above is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A pipe laying machine, characterized in that: include: Cofferdam assembly; A track assembly, comprising a first track assembly and a second track assembly arranged at both ends of the cofferdam assembly, wherein the first track assembly and the second track assembly each comprise a track fixing frame, a track folding frame, and at least one folding ear seat assembly arranged along a height direction of the track fixing frame; The bottom of the track fixing frame is fixed on the cofferdam assembly, and the track folding frame is connected to the track fixing frame via a folding ear seat assembly; The folding ear seat assembly includes a fixed ear seat, a movable ear seat and a rotating pin shaft group, the fixed ear seat is fixed to the track fixing frame, the movable ear seat is fixed to the track folding frame, the fixed ear seat includes a first fixing part and a second fixing part arranged on both sides of the track fixing frame, the rotating pin shaft group includes a first pin shaft and a second pin shaft, and the first fixing part and / or the second fixing part are connected to the movable ear seat through the first pin shaft and the second pin shaft respectively; The gantry assembly is movably connected to the track assembly.

2. The pipe laying machine according to claim 1, characterized in that: The movable ear seat includes a first movable part and a second movable part, and the first movable part and the second movable part are detachably connected to the first pin shaft and the second pin shaft respectively.

3. The pipe laying machine according to claim 1, characterized in that: The cofferdam assembly includes a main cofferdam assembly and an auxiliary cofferdam assembly, the main cofferdam assembly and the auxiliary cofferdam assembly are connected by a cofferdam buckle plate, the bottom of the track fixing frame is connected to the main cofferdam assembly, and in the working state, the track folding frame is supported on the auxiliary cofferdam assembly.

4. The pipe laying machine according to claim 1, characterized in that: On the first track assembly and the second track assembly, two groups of folding ear seat assemblies are respectively arranged at intervals along the height direction corresponding to the track fixing frame.

5. The pipe laying machine according to claim 1, characterized in that: The movable ear seat is formed with a mounting groove portion, and the fixed ear seat is connected in the mounting groove portion.

6. The pipe laying machine according to claim 2, characterized in that: The track assembly includes an unfolded state, a working state and a closed state; In the unfolded state, the second fixed portion located outside the track fixing frame is hinged to the second movable portion through the second pin shaft, and the first fixed portion located inside the track fixing frame is separated from the first movable portion, so that the track folding frame unfolds outward at an angle with the second pin shaft as the rotation center; In the working state, the first fixed part and the first movable part are connected by the first pin shaft, and the second fixed part and the second movable part are connected by the second pin shaft, so that the track folding frame is located on the extension line of the track fixing frame; In the closed state, the first fixed portion is hinged to the first movable portion via the first pin shaft, and the second fixed portion is separated from the second movable portion, so that the track folding frame is closed inwardly at an angle with the first pin shaft as the rotation center.

7. The pipe laying machine according to claim 1, characterized in that: The bottom of the track folding frame is provided with a folding base frame and a movable base frame which is movably connected to the bottom of the folding base frame along the height direction of the folding base frame.

8. The pipe laying machine according to claim 7, characterized in that: The folding base frame is provided with a plurality of fixed positions at intervals along its height direction, and the movable base frame is provided with a plurality of adjustment positions at intervals along its height direction. The adjustment positions are connected to different fixed positions by fasteners to adjust the position of the movable base frame.

9. The pipe laying machine according to claim 8, characterized in that: The folding base includes a first base and a second base, a movable guide rail is formed between the first base and the second base, the movable base portion is inserted into the movable guide rail, a fixed plate is formed on one side of the movable base, the fixed plate is in contact with and connected to one side of the first base and the second base, and the adjustment position is located on the fixed plate.

10. The pipe laying machine according to claim 1, characterized in that: A plurality of cross arm supports are arranged at intervals along the length direction of the cofferdam assembly for supporting the oil pipe.

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