Obstacle crossing mechanism for anticorrosion joint filling equipment

Abstract

The present application relates to long oil and gas pipeline construction technology field, especially relates to a kind of anticorrosive joint filling equipment obstacle crossing mechanism.The anticorrosive joint filling equipment obstacle crossing mechanism of the present application includes rack, connecting rod driving mechanism, two chassis supports, two groups of driving wheels and two groups of driven wheels, two chassis supports are respectively hinged in the lower part of the two ends of the rack, the connecting rod driving mechanism is installed on the rack, and is connected with the upper end of two chassis supports, for driving two chassis supports synchronous swing, two groups of driving wheels are respectively installed in the lower part of the end of two chassis supports away from each other, two groups of driven wheels are respectively installed in the lower part of the end of two chassis supports close to each other.The advantages are: simple and reasonable structure design, can pass through and cross the pipeline surface obstacle, make the existing equipment get rid of the present situation of hoisting operation, improve construction efficiency, reduce operation cost, reduce safety risk, reduce labor intensity.

Description

Technical Field

[0001] This invention relates to the field of long-distance oil and gas pipeline construction technology, and in particular to an obstacle crossing mechanism for corrosion prevention and repair equipment. Background Technology

[0002] Long-distance oil and gas pipelines are generally treated with 3PE for overall corrosion protection when they leave the factory, with a 100-250mm exposed section left at the pipe ends to facilitate assembly and welding. After the pipeline assembly and welding are completed on site, the next step is corrosion protection and joint repair. This involves first removing rust and other deposits from the pipe end surface, followed by preheating the pipe end, spraying epoxy primer, heat curing, installing heat shrink tape, and heat fusion shrinking.

[0003] Currently, each step in corrosion protection and joint repair requires separate equipment. Therefore, after each step, the equipment for the next step must be switched at the pipe opening. Considering the need to prevent further contamination of the cleaned pipe opening, existing equipment is installed and removed via hoisting, which is inefficient, impacts construction efficiency, increases worker workload, and poses potential safety risks. While some corrosion protection and joint repair equipment has developed mechanisms that travel along the pipeline axis, these are all passive, relying primarily on manual pushing. Others use motor-driven mechanisms, but during corrosion protection and joint repair, the pipe opening must not be subjected to external damage or contamination after treatment. Therefore, hoisting is still necessary to move the equipment across the repaired pipe opening. Pipeline construction sites are complex, and frequent hoisting poses potential safety risks, increases equipment usage, raises project costs, and hinders construction efficiency.

[0004] Therefore, it is necessary to develop an obstacle crossing mechanism for anti-corrosion repair equipment to overcome the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an obstacle crossing mechanism for anti-corrosion repair equipment, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] An obstacle crossing mechanism for anti-corrosion repair equipment includes a frame, a linkage drive mechanism, two chassis supports, two sets of driving wheels, and two sets of driven wheels. The two chassis supports are respectively hinged to the lower parts of both ends of the frame. The linkage drive mechanism is mounted on the frame and connected to the upper ends of the two chassis supports to drive the two chassis supports to rotate synchronously. The two sets of driving wheels are respectively mounted on the lower parts of the two chassis supports at opposite ends, and the two sets of driven wheels are respectively mounted on the lower parts of the two chassis supports at adjacent ends.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the frame includes two horizontally and vertically arranged side plates, which are distributed in parallel and spaced apart, and are vertically connected by multiple connecting beams. The lower part of the middle area of ​​the two side plates is provided with a notch.

[0010] Furthermore, the aforementioned chassis support includes a chassis frame, connecting columns, and a rotating shaft. The rotating shaft is horizontally positioned in the upper middle area of ​​the chassis frame. Both ends of the rotating shaft are connected and fixed to the chassis frame via diagonal braces. Both ends of the rotating shaft are rotatably connected to the lower part of the corresponding end of the frame. The connecting column is vertically fixed to the upper middle part of the chassis frame. The linkage drive mechanism is connected to the upper ends of the connecting columns of the two aforementioned chassis supports.

[0011] Furthermore, each set of the aforementioned drive wheels is provided with two, and the lower end of the aforementioned chassis bracket is provided with drive wheel frames on both sides corresponding to the two aforementioned drive wheels, and the aforementioned drive wheels are rotatably assembled in the corresponding aforementioned drive wheel frames.

[0012] Furthermore, the aforementioned drive wheel is a hub motor.

[0013] Furthermore, each set of the aforementioned driven wheels is provided with two, and the lower end of the aforementioned chassis bracket is provided with driven wheel frames on both sides corresponding to the two aforementioned driven wheels, and the aforementioned driven wheels are rotatably mounted in the corresponding aforementioned driven wheel frames.

[0014] Furthermore, the two sides of the aforementioned connecting column are respectively connected and fixed to the aforementioned chassis frame by diagonal braces.

[0015] Furthermore, the aforementioned linkage drive mechanism includes a linkage and a translation drive mechanism. The linkage extends laterally through both ends of the frame and is slidably connected to the frame. The upper end of the connecting column has a vertically extending through groove. The two side walls of the through groove have vertically opening strip holes. The two ends of the linkage have ear plates that extend into the through grooves of the two connecting columns respectively. The ear plates are horizontally provided with limiting pins that extend into the strip holes on both sides. The translation drive mechanism is connected to the linkage and is used to drive the linkage to move along the length direction.

[0016] Furthermore, guide sleeves are provided at both ends inside the frame, and the two ends of the connecting rod pass through the two guide sleeves respectively and slide in cooperation with the guide sleeves.

[0017] Furthermore, a rack is fixed to the middle of the connecting rod along its length direction. The translation drive mechanism includes a motor, a gear, and a rack. The rack is mounted in the middle of the connecting rod and extends along the length direction of the connecting rod. The motor is mounted in the frame. The gear is mounted on the shaft of the motor and meshes with the rack.

[0018] The beneficial effects of this invention are: the structural design is simple and reasonable, it can pass through and cross obstacles on the pipe surface, freeing existing equipment from the current status of hoisting operations, improving construction efficiency, reducing operating costs, reducing safety risks, and reducing the labor intensity of workers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the obstacle crossing mechanism for the anti-corrosion repair equipment of the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly of the connecting rod and two sets of chassis supports in the obstacle crossing mechanism of the anti-corrosion repair equipment of the present invention.

[0021] Figure 3 This is a schematic diagram of the position of the obstacle crossing mechanism of the anti-corrosion and repair equipment of the present invention before crossing the obstacle on the pipe surface;

[0022] Figure 4 This is a schematic diagram of the position of the obstacle crossing mechanism of the anti-corrosion and joint repair equipment of the present invention when crossing an obstacle on the pipe surface. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the position of the obstacle crossing mechanism of the anti-corrosion and joint repair equipment of the present invention when crossing an obstacle on the pipe surface. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the position of the obstacle crossing mechanism of the anti-corrosion and joint repair equipment of the present invention when crossing an obstacle on the pipe surface. Figure 3 ;

[0025] Figure 7 This is a schematic diagram of the position of the obstacle crossing mechanism of the anti-corrosion and joint repair equipment of the present invention when crossing an obstacle on the pipe surface. Figure 4 .

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Frame; 2. Chassis support; 3. Drive wheel; 4. Driven wheel; 11. Guide sleeve; 21. Chassis frame; 22. Connecting column; 23. Rotating shaft; 51. Connecting rod. Detailed Implementation

[0028] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] Example: Figure 1 As shown, the obstacle crossing mechanism for the anti-corrosion patching equipment in this embodiment includes a frame 1, a linkage drive mechanism, two chassis supports 2, two sets of driving wheels 3, and two sets of driven wheels 4. The two chassis supports 2 are respectively hinged to the lower parts of both ends of the frame 1. The linkage drive mechanism is mounted on the frame 1 and connected to the upper ends of the two chassis supports 2, and is used to drive the two chassis supports 2 to rotate synchronously. The two sets of driving wheels 3 are respectively mounted on the lower parts of the two chassis supports 2 at the ends that are far apart from each other, and the two sets of driven wheels 4 are respectively mounted on the lower parts of the two chassis supports 2 at the ends that are close to each other.

[0030] In this embodiment, the obstacle-crossing mechanism of the anti-corrosion repair equipment is mounted on the upper part of the oil and gas pipeline surface. Different modules are mounted on the frame 1 to automate operations such as rust removal, pipe end heating, primer spraying, and heat shrink tape installation. The automatic obstacle-crossing mechanism enables the equipment to move along the pipeline, avoiding the need for repeated hoisting. The specific movement process is as follows:

[0031] The entire mechanism moves normally on the pipe surface (e.g.) Figure 3 (As shown); When encountering an obstacle (represented by D in the diagram), the linkage drive mechanism drives the two chassis supports 2 to rotate synchronously. This causes the driving wheel 3 of the chassis support 2 closest to the obstacle (defined as chassis support A#) to rise and become suspended in the air, while the driven wheel 4 lands on the pipe surface. Meanwhile, the driving wheel 3 of the other chassis support 2 (defined as chassis support B#) lands on the pipe surface, and the driven wheel 4 is lifted. The system continues to move, allowing the driving wheel 3 of chassis support A# to pass over the obstacle until the driven wheel 4 of chassis support A# approaches the obstacle (e.g., ...). Figure 4 (As shown); Next, the linkage drive mechanism immediately drives the two chassis supports 2 to rotate synchronously in opposite directions, so that the driving wheel 3 of chassis support A# lands on the pipe surface and the driven wheel 4 is lifted and suspended in the air. Then, the driving wheel 3 of chassis support B# is lifted and suspended in the air, and the driven wheel 4 lands on the pipe surface, continuing to move. Chassis support A# can then cross the obstacle and continue to move until chassis support B# approaches the obstacle (such as...). Figure 5(As shown); Repeat the above steps, using the linkage drive mechanism to drive the two chassis supports 2 to rotate synchronously in opposite directions again, causing the driving wheel 3 of chassis support A# to lift and the driven wheel 4 to land on the pipe surface. Simultaneously, the driving wheel 3 of chassis support B# lands on the pipe surface and the driven wheel 4 lifts, continuing to move. The driving wheel 3 of chassis support B# approaches the obstacle (such as...). Figure 6 As shown); after the drive wheel 3 of chassis support B# approaches the obstacle, the linkage drive mechanism immediately drives the two chassis supports 2 to rotate synchronously in the opposite direction again, so that the drive wheel 3 of chassis support A# lands on the pipe surface and the driven wheel 4 is lifted. Simultaneously, the drive wheel 3 of chassis support B# is lifted and the driven wheel 4 lands on the pipe surface, continuing to move, thus allowing chassis support B# to cross the obstacle (such as...). Figure 7 (As shown). Overall, the structure of the mechanism is simple and reasonable, and it can pass through and cross obstacles on the surface of the pipeline, freeing existing equipment from the current situation of hoisting operations, improving construction efficiency, reducing operating costs, reducing safety risks, and reducing the labor intensity of workers.

[0032] It should be emphasized that the obstacles in the attached drawings of this embodiment are typical examples of pipe openings that have been assembled, exposed, and are undergoing anti-corrosion repair, but are not limited to this type. They may also include small, crossable obstacles that may be placed on top of pipelines during pipeline construction, such as electrical wires and oil pipes.

[0033] in, Figure 3-7 The middle arrows all indicate the direction of movement of the mechanism on the pipe surface.

[0034] In this embodiment, the frame 1 includes two horizontally and vertically arranged side plates, which are parallel and spaced apart, and are vertically connected by multiple connecting beams. A notch is provided at the lower part of the middle area between the two side plates. The frame 1 has a simple and reasonable structural design, facilitating mounting and installation. Generally, the mounted modules are installed at the notch.

[0035] In a preferred embodiment, the chassis support 2 includes a chassis frame 21, a connecting column 22, and a rotating shaft 23. The rotating shaft 23 is horizontally disposed in the upper middle region of the chassis frame 21. Both ends of the rotating shaft 23 are respectively connected and fixed to the chassis frame 21 through diagonal braces. Both ends of the rotating shaft 23 are rotatably connected to the lower part of the corresponding end of the frame 1. The connecting column 22 is vertically fixed to the upper middle part of the chassis frame 21. The linkage drive mechanism is respectively connected to the upper ends of the connecting columns 22 of the two chassis supports 2.

[0036] In the above implementation scheme, the chassis support 2 has a simple structural design and adopts a hollow frame structure. It is rotatably connected to the frame 1 through the rotating shaft 23 to ensure that the chassis support 2 has good flipping performance.

[0037] In a preferred embodiment, each set of the above-mentioned drive wheels 3 is provided with two, and the lower end of the chassis bracket 2 is provided with drive wheel frames corresponding to the two drive wheels 3 respectively. The drive wheels 3 are rotatably assembled in the corresponding drive wheel frames.

[0038] In the above implementation scheme, the two driving wheels 3 of each group are distributed in an inward V-shape, respectively contacting the two sides of the upper part of the oil and gas pipeline, and moving smoothly along the oil and gas pipeline. The driving wheels 3 can autonomously drive themselves to move along the oil and gas pipeline, and the driven wheels 4 follow the driving wheels 3 to move along the pipeline surface. The design is relatively simple and reasonable, and the movement is relatively smooth.

[0039] In this embodiment, the aforementioned drive wheel 3 adopts a hub motor of a compatible model in the prior art.

[0040] In this embodiment, each set of driven wheels 4 has two wheels. The lower end of the chassis bracket 2 has driven wheel frames on both sides corresponding to the two driven wheels 4. The driven wheels 4 are rotatably mounted in the corresponding driven wheel frames. The two driven wheels 4 in each set are also distributed in an inward V-shape, respectively contacting the upper side surfaces of the oil and gas pipeline, and moving smoothly along the oil and gas pipeline.

[0041] In this embodiment, the two sides of the connecting column 22 are respectively connected and fixed to the chassis frame 21 by diagonal braces, and the connection between the structures is relatively stable.

[0042] As a preferred implementation method, such as Figure 1 and 2 As shown, the linkage drive mechanism includes a linkage 51 and a translation drive mechanism. The linkage 51 extends laterally through both ends of the frame 1 and is slidably connected to the frame 1. The upper end of the connecting column 22 has a vertically extending through groove. The two side walls of the through groove have vertically opened strip-shaped holes (c in the figure). The two ends of the linkage 51 are provided with ear plates (e in the figure) that extend into the through grooves of the two connecting columns 22 respectively. The ear plates are horizontally provided with limiting pins (d in the figure) that extend into the strip-shaped holes on both sides. The translation drive mechanism is connected to the linkage 51 and is used to drive the linkage 51 to move along the length direction.

[0043] In the above implementation scheme, the connecting rod 51, the frame 1, and the two chassis supports 2 form a parallelogram-shaped four-bar linkage. Therefore, when the connecting rod 51 moves horizontally along its length, it can drive the two chassis supports 2 to rotate synchronously and in the same direction, thereby enabling the two chassis supports 2 to effectively cross obstacles. At the same time, the two ends of the connecting rod 51 extend into the through slot and cooperate with the slotted hole through the limiting pin on the ear plate. This design allows the ear plate (that is, the two ends of the connecting rod 51) to move up and down relative to the connecting post 22. When the connecting rod 51 moves horizontally, it can effectively drive the chassis supports 2 to rotate. Furthermore, during the rotation process, this design allows the upper connecting post 22 of the chassis support 2 to have good room for movement relative to the end of the connecting rod 51, avoiding positional interference between the chassis support 2 and the connecting rod 51 when the chassis support 2 rotates, and ensuring that the chassis support 2 can effectively rotate with the horizontal movement of the connecting rod 51.

[0044] In this embodiment, guide sleeves 11 are provided at both ends inside the frame 1. The two ends of the connecting rod 51 pass through the two guide sleeves 11 respectively and slide in cooperation with the guide sleeves 11. This ensures that the connecting rod 51 can move in the correct direction relative to the frame 1.

[0045] In this embodiment, a rack is fixed to the middle of the connecting rod 51 along its length. The translation drive mechanism includes a motor, a gear, and a rack. The rack is mounted in the middle of the connecting rod 51 and extends along its length. The motor is mounted in the frame 1, and the gear is mounted on the motor shaft and meshes with the rack. During operation, the motor drives the gear to rotate, thereby enabling the rack to move linearly relative to the gear, which in turn drives the connecting rod 51 to reciprocate along its length, thus achieving synchronous and unidirectional flipping and crossing of the two chassis supports 2.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An obstacle crossing mechanism for anti-corrosion repair equipment, characterized in that: The system includes a frame (1), a linkage drive mechanism, two chassis supports (2), two sets of drive wheels (3), and two sets of driven wheels (4). The two chassis supports (2) are respectively hinged to the lower parts of both ends of the frame (1). The linkage drive mechanism is mounted on the frame (1) and connected to the upper ends of the two chassis supports (2) to drive the two chassis supports (2) to rotate synchronously. The two sets of drive wheels (3) are respectively mounted on the lower parts of the two chassis supports (2) at opposite ends, and the two sets of driven wheels (4) are respectively mounted on the lower parts of the two chassis supports (2) at adjacent ends. The chassis support (2) includes a chassis frame (21), a connecting column (22), and a rotating shaft (23). The rotating shaft (23) is horizontally arranged in the middle area above the chassis frame (21). The two ends of the rotating shaft (23) are respectively connected and fixed to the chassis frame (21) through diagonal braces. (23) is rotatably connected to the lower part of the corresponding end of the frame (1) at both ends. The connecting column (22) is vertically fixed to the middle of the upper end of the chassis frame (21). The linkage drive mechanism is connected to the upper end of the connecting column (22) of the two chassis supports (2) respectively. The linkage drive mechanism includes a connecting rod (51) and a translation drive mechanism. The connecting rod (51) passes through both ends of the frame (1) laterally and is slidably connected to the frame (1). The upper end of the connecting column (22) is provided with a vertically extending through groove. The two side walls of the through groove are provided with strip holes along the vertical direction. The two ends of the connecting rod (51) are provided with ear plates that extend into the through grooves of the two connecting columns (22) respectively. The ear plates are provided with limiting pins that extend into the strip holes on both sides in a horizontal direction. The translation drive mechanism is connected to the connecting rod (51) and is used to drive the connecting rod (51) to move along the length direction.

2. The obstacle crossing mechanism for anti-corrosion repair equipment according to claim 1, characterized in that: The frame (1) includes two horizontally and vertically arranged side plates. The two side plates are distributed in parallel and spaced apart, and multiple connecting beams are vertically connected between them. A notch is provided in the lower part of the middle area of ​​the two side plates.

3. The obstacle crossing mechanism for anti-corrosion repair equipment according to claim 1, characterized in that: Each set of driving wheels (3) has two, and the lower end of the chassis bracket (2) has driving wheel frames on both sides that correspond one-to-one with the two driving wheels (3). The driving wheels (3) are rotatably assembled in the corresponding driving wheel frames.

4. The obstacle crossing mechanism for anti-corrosion repair equipment according to claim 3, characterized in that: The drive wheel (3) is a hub motor.

5. The obstacle crossing mechanism for an anti-corrosion repair device according to claim 1, characterized in that: Each set of driven wheels (4) has two. The lower end of the chassis bracket (2) has driven wheel frames on both sides that correspond one-to-one with the two driven wheels (4). The driven wheels (4) are rotatably mounted in the corresponding driven wheel frames.

6. The obstacle crossing mechanism for anti-corrosion repair equipment according to claim 1, characterized in that: The two sides of the connecting column (22) are respectively connected and fixed to the chassis frame (21) by diagonal bracing.

7. The obstacle crossing mechanism for an anti-corrosion repair equipment according to claim 1, characterized in that: The frame (1) has guide sleeves (11) at both ends inside. The two ends of the connecting rod (51) pass through the two guide sleeves (11) respectively and slide with the guide sleeves (11).

8. The obstacle crossing mechanism for anti-corrosion repair equipment according to claim 1, characterized in that: A rack is fixed in the middle of the connecting rod (51) along its length direction. The translation drive mechanism includes a motor, a gear and a rack. The rack is mounted in the middle of the connecting rod (51) and extends along the length direction of the connecting rod (51). The motor is mounted in the frame (1). The gear is mounted on the shaft of the motor and meshes with the rack.

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