Obstacle crossing mechanism for anti-corrosion joint coating equipment

Abstract

The invention relates to the technical field of long oil and gas pipeline construction, in particular to an obstacle crossing mechanism for anti-corrosion joint coating equipment. The obstacle crossing mechanism for the anti-corrosion joint coating equipment comprises a rack, a connecting rod driving mechanism, two chassis supports, two sets of driving wheels and two sets of driven wheels, the two chassis supports are hinged to the lower portions of the two ends of the rack respectively, and the connecting rod driving mechanism is installed on the rack and connected with the upper ends of the two chassis supports; the two sets of driving wheels are installed on the lower portions of the ends, away from each other, of the two chassis supports correspondingly, and the two sets of driven wheels are installed on the lower portions of the ends, close to each other, of the two chassis supports correspondingly. The device has the advantages of being simple and reasonable in structural design, capable of passing through and crossing obstacles on the surface of a pipeline, enabling existing equipment to get rid of the current situation of hoisting operation, improving construction efficiency, reducing operation cost, reducing safety risks and reducing labor intensity of workers.

Description

Technical Field

[0001] The invention relates to the technical field of long-distance oil and gas pipeline construction, and in particular to an obstacle crossing mechanism for anti-corrosion patching equipment. Background Art

[0002] Long-distance oil and gas pipelines are generally anti-corrosion 3PE for the whole when they leave the factory, and 100ˉ250mm of exposed space is reserved at the pipe mouth to facilitate the pipe assembly and welding. After the pipe assembly and welding is carried out on site, the next step is anti-corrosion patching. When carrying out anti-corrosion patching, the rust and other attachments on the surface of the pipe mouth must be removed first, followed by the pipe mouth preheating, spraying epoxy primer, heating and curing, installation of heat shrink tape, hot melt shrinkage and other processes.

[0003] At present, each process of anti-corrosion patching requires the installation of separate equipment for operation. Therefore, after each process of anti-corrosion patching is completed, the equipment of the next process needs to be replaced at the pipe mouth to continue the operation. Considering that the cleaned pipe mouth cannot be contaminated again, the existing equipment is installed and removed by hoisting, which is relatively inefficient, affecting the efficiency of engineering construction, and the labor intensity of workers is high, which will also cause potential safety risks. At present, some anti-corrosion patching equipment has developed a mechanism that walks along the pipeline axis, but they are all passive walking mechanisms, mainly driven by manual propulsion. Some of them are driven by motors. However, when performing anti-corrosion patching operations, since the pipe mouth is not allowed to be damaged by external forces and contaminated or contacted by other objects after treatment, it is also necessary to hoist the equipment across the pipe mouth after construction. The construction scene at the pipeline construction site is complex. Frequent hoisting of equipment will cause potential safety risks and more equipment occupation, resulting in high project costs and restricting the efficiency of engineering construction.

[0004] Based on this, it is necessary to develop an obstacle crossing mechanism for anti-corrosion patching equipment to overcome the above 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 patching equipment, which effectively overcomes the defects of the prior art.

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

[0007] An obstacle crossing mechanism for anti-corrosion patching equipment includes a frame, a connecting rod driving mechanism, two chassis brackets, two groups of driving wheels and two groups of driven wheels. The two chassis brackets are respectively hinged at the lower parts of the two ends of the frame. The connecting rod driving mechanism is installed on the frame and connected to the upper ends of the two chassis brackets to drive the two chassis brackets to swing synchronously. The two groups of driving wheels are respectively installed at the lower parts of the ends of the two chassis brackets that are away from each other, and the two groups of driven wheels are respectively installed at the lower parts of the ends of the two chassis brackets that are close to each other.

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

[0009] Furthermore, the frame includes two side panels arranged vertically in a transverse direction, the two side panels are distributed in parallel and at intervals, and a plurality of connecting beams are vertically connected between the two side panels, and a notch is provided at the lower portion of the middle area of ​​the two side panels.

[0010] Furthermore, the chassis bracket includes a chassis frame, a connecting column and a rotating shaft. The rotating shaft is horizontally arranged in the upper middle area of ​​the chassis frame. Both ends of the rotating shaft are respectively connected and fixed to the chassis frame through diagonal braces. Both ends of the rotating shaft are respectively rotatably connected to the lower parts of the corresponding ends of the frame. The connecting column is vertically fixed to the middle part of the upper end of the chassis frame. The connecting rod driving mechanism is respectively connected to the upper ends of the connecting columns of the two chassis brackets.

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

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

[0013] Furthermore, each group of the above-mentioned driven wheels is provided with two, and driven wheel frames corresponding to the two above-mentioned driven wheels are respectively provided on both sides of the lower end of the above-mentioned chassis bracket, and the above-mentioned driven wheels are rotatably assembled in the corresponding above-mentioned driven wheel frames.

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

[0015] Furthermore, the connecting rod driving mechanism includes a connecting rod and a translation driving mechanism. The connecting rod passes through the two ends of the frame horizontally and is slidably connected to the frame. A vertically extending through groove is provided inside the upper end of the connecting column. Strip holes are vertically opened on the side walls of the through groove. Ear plates are provided at both ends of the connecting rod and extend into the through grooves of the two connecting columns respectively. Limit pins are horizontally penetrated on the ear plates and extend into the strip holes on both sides. The translation driving mechanism is connected to the connecting rod for driving the connecting rod to move along the length direction.

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

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

[0018] The beneficial effects of the present invention are: the structural design is simple and reasonable, and it can pass through and cross obstacles on the pipeline surface, so that the existing equipment can get rid of the current situation of lifting operations, improve construction efficiency, reduce operating costs, reduce safety risks, and reduce the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an obstacle crossing mechanism for the anti-corrosion patching equipment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the assembly of the connecting rod and two sets of chassis brackets in the obstacle crossing mechanism for the anti-corrosion patching equipment of the present invention;

[0021] Figure 3 It is a schematic diagram of the position of the obstacle crossing mechanism for the anti-corrosion patching equipment of the present invention before crossing the obstacle on the pipeline surface;

[0022] Figure 4 The position diagram of the obstacle crossing mechanism of the anti-corrosion patching equipment of the present invention when crossing an obstacle on the pipeline surface Figure 1 ;

[0023] Figure 5 The position diagram of the obstacle crossing mechanism of the anti-corrosion patching equipment of the present invention when crossing an obstacle on the pipeline surface Figure 2 ;

[0024] Figure 6 The position diagram of the obstacle crossing mechanism of the anti-corrosion patching equipment of the present invention when crossing an obstacle on the pipeline surface Figure 3 ;

[0025] Figure 7 The position diagram of the obstacle crossing mechanism of the anti-corrosion patching equipment of the present invention when crossing an obstacle on the pipeline surface Figure 4 .

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Frame; 2. Chassis bracket; 3. Driving wheel; 4. Driven wheel; 11. Guide sleeve; 21. Chassis frame; 22. Connecting column; 23. Rotating shaft; 51. Connecting rod. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] Example: Figure 1 As shown, the obstacle crossing mechanism for the anti-corrosion patching equipment of this embodiment includes a frame 1, a connecting rod driving mechanism, two chassis brackets 2, two groups of driving wheels 3 and two groups of driven wheels 4. The two chassis brackets 2 are respectively hinged at the lower parts of the two ends of the frame 1, the connecting rod driving mechanism is installed on the frame 1 and is connected to the upper ends of the two chassis brackets 2, so as to drive the two chassis brackets 2 to swing synchronously, the two groups of driving wheels 3 are respectively installed at the lower parts of the ends of the two chassis brackets 2 away from each other, and the two groups of driven wheels 4 are respectively installed at the lower parts of the ends of the two chassis brackets 2 close to each other.

[0030] When the anti-corrosion patching equipment of this embodiment is used with an obstacle crossing mechanism, it is installed on the upper surface of the oil and gas pipeline. Through the rack 1, different modules are installed to realize automatic rust removal, pipe heating, primer spraying, heat shrink tape installation and other automated operations. The automatic obstacle crossing mechanism enables the equipment to move along the pipeline by itself, avoiding the problem of repeated lifting. The specific moving process is as follows:

[0031] The entire mechanism moves normally on the pipeline surface (such as Figure 3 When encountering an obstacle (indicated by D in the figure), the two chassis brackets 2 are driven to flip synchronously through the connecting rod driving mechanism, so that the driving wheel 3 of the chassis bracket 2 close to the obstacle (defined as the A# chassis bracket) is lifted up and suspended in the air, and the driven wheel 4 falls on the surface of the pipe, and the driving wheel 3 of the other chassis bracket 2 (defined as the B# chassis bracket) falls on the surface of the pipe, and the driven wheel 4 is lifted and continues to move, so that the driving wheel 3 of the A# chassis bracket passes over the obstacle until the driven wheel 4 of the A# chassis bracket approaches the obstacle (as shown in the figure). Figure 4 Next, the connecting rod driving mechanism immediately drives the two chassis brackets 2 to synchronously flip in the opposite direction, so that the driving wheel 3 of the A# chassis bracket falls on the pipe surface, and the driven wheel 4 is lifted up and suspended in the air. Then, the driving wheel 3 of the B# chassis bracket is lifted up and suspended in the air, and the driven wheel 4 falls on the pipe surface and continues to move. The A# chassis bracket can cross the obstacle and continue to move until the B# chassis bracket approaches the obstacle (as shown in FIG. Figure 5Repeat the above steps, and drive the two chassis brackets 2 to reverse synchronously again through the connecting rod driving mechanism, so that the driving wheel 3 of the A# chassis bracket is lifted, and the driven wheel 4 falls on the pipe surface. At the same time, the driving wheel 3 of the B# chassis bracket falls on the pipe surface, and the driven wheel 4 is lifted. Continue to move, and the driving wheel 3 of the B# chassis bracket approaches the obstacle (such as Figure 6 As shown); after the driving wheel 3 of the B# chassis bracket approaches the obstacle, the connecting rod driving mechanism immediately drives the two chassis brackets 2 to reverse synchronously again, so that the driving wheel 3 of the A# chassis bracket falls on the pipe surface, and the driven wheel 4 is lifted up, and synchronously, the driving wheel 3 of the B# chassis bracket is lifted up, and the driven wheel 4 falls on the pipe surface, and continues to move, so that the B# chassis bracket can cross the obstacle (as shown in FIG. Figure 7 As shown). The overall structural design of the mechanism is simple and reasonable, and it can pass through and cross obstacles on the pipeline surface, freeing the 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.

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

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

[0034] In this embodiment, the rack 1 includes two side panels arranged horizontally and vertically, the two side panels are parallel and spaced apart, and a plurality of connecting beams are vertically connected between the two side panels, and a notch is provided at the lower part of the middle area of ​​the two side panels. The structural design of the rack 1 is simple and reasonable, and is convenient for loading and installation. The modules generally loaded are installed at the notch.

[0035] As a preferred embodiment, the chassis bracket 2 includes a chassis frame 21, a connecting column 22 and a rotating shaft 23. The rotating shaft 23 is horizontally arranged in the upper middle area of ​​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. The two ends of the rotating shaft 23 are respectively rotatably connected to the corresponding lower ends of the frame 1. The connecting column 22 is vertically fixed to the middle part of the upper end of the chassis frame 21. The connecting rod driving mechanism is respectively connected to the upper ends of the connecting columns 22 of the two chassis brackets 2.

[0036] In the above implementation scheme, the chassis bracket 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 bracket 2 has good flipping performance.

[0037] As a preferred embodiment, each group of the above-mentioned driving wheels 3 is provided with two, and driving wheel frames corresponding to the two above-mentioned driving wheels 3 are respectively provided on both sides of the lower end of the above-mentioned chassis bracket 2, and the above-mentioned driving wheels 3 are rotatably assembled in the corresponding above-mentioned driving wheel frames.

[0038] In the above implementation scheme, the two driving wheels 3 of each group are distributed in an inner eight-shaped shape, respectively contacting the two side surfaces of the upper part of the oil and gas pipeline, and moving smoothly along the oil and gas pipeline. The driving wheel 3 can be driven autonomously to move along the oil and gas pipeline, and the driven wheel 4 follows the driving wheel 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 driving wheel 3 adopts a hub motor of an adapted model in the prior art.

[0040] In this embodiment, each set of the above-mentioned driven wheels 4 is provided with two, and driven wheel frames corresponding to the two above-mentioned driven wheels 4 are respectively provided on both sides of the lower end of the above-mentioned chassis bracket 2, and the above-mentioned driven wheels 4 are rotatably assembled in the corresponding above-mentioned driven wheel frames. Each set of two driven wheels 4 is also distributed in an inner eight-shaped shape, respectively contacting the two side surfaces of the upper part of the oil and gas pipeline, and moving smoothly along the oil and gas pipeline.

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

[0042] As a preferred embodiment, Figure 1 and 2 As shown, the connecting rod driving mechanism includes a connecting rod 51 and a translation driving mechanism. The connecting rod 51 passes through the two ends of the frame 1 horizontally and is slidably connected to the frame 1. A vertically extending through groove is provided inside the upper end of the connecting column 22. Strip holes (denoted by c in the figure) are vertically opened on the side walls of the through groove. Ear plates (denoted by e in the figure) are provided at both ends of the connecting rod 51 and respectively extend into the through grooves of the two connecting columns 22. Limit pins (denoted by d in the figure) extending into the strip holes on both sides are horizontally penetrated on the ear plates. The translation driving mechanism is connected to the connecting rod 51 and is used to drive the connecting rod 51 to move along the length direction.

[0043] In the above embodiment, a parallelogram-shaped four-bar linkage is formed between the connecting rod 51, the frame 1, and the two chassis brackets 2. Therefore, when the connecting rod 51 moves horizontally along its length direction, the two chassis brackets 2 can be driven to turn synchronously in the same direction, thereby realizing the operation of the two chassis brackets 2 effectively crossing obstacles. At the same time, the two ends of the connecting rod 51 extend into the through groove, and the limit pins on the ear plate cooperate with the bar holes. Such a design allows the ear plate (that is, the two ends of the connecting rod 51) to move up and down relative to the connecting column 22. When the connecting rod 51 moves horizontally, the chassis bracket 2 can be effectively driven to turn over. In addition, during the turning process, the design allows the upper end connecting column 22 of the chassis bracket 2 to have a better activity space relative to the end of the connecting rod 51, avoiding position interference with the connecting rod 51 when the chassis bracket 2 turns over, and ensuring that the chassis bracket 2 can be effectively turned over with the translation of the connecting rod 51.

[0044] In this embodiment, guide sleeves 11 are provided at both ends of the frame 1, and both ends of the connecting rod 51 respectively penetrate the two guide sleeves 11 and slide with the guide sleeves 11 to ensure 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 direction, and the translation drive mechanism includes a motor, a gear and a rack. The rack is installed in the middle of the connecting rod 51 and extends along the length direction of the connecting rod 51. The motor is installed in the frame 1, and the gear is installed on the shaft of the motor and meshes with the rack. During operation, the motor drives the gear to rotate, so that the rack can move linearly relative to the gear, thereby driving the connecting rod 51 to reciprocate along its length direction, thereby realizing the synchronous and same-direction flipping and crossing of the two chassis brackets 2.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An obstacle crossing mechanism for anti-corrosion patching equipment, characterized in that: The invention comprises a frame (1), a connecting rod driving mechanism, two chassis brackets (2), two groups of driving wheels (3) and two groups of driven wheels (4), wherein the two chassis brackets (2) are respectively hinged at the lower parts of both ends of the frame (1), the connecting rod driving mechanism is mounted on the frame (1) and connected to the upper ends of the two chassis brackets (2) for driving the two chassis brackets (2) to swing synchronously, the two groups of driving wheels (3) are respectively mounted at the lower parts of the ends of the two chassis brackets (2) which are away from each other, and the two groups of driven wheels (4) are respectively mounted at the lower parts of the ends of the two chassis brackets (2) which are close to each other.

2. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 1 is characterized in that: The frame (1) comprises two side panels which are arranged vertically in a transverse direction. The two side panels are arranged in parallel and spaced apart from each other, and a plurality of connecting beams are vertically connected between the two side panels. A notch is provided at the lower part of the middle area of ​​the two side panels.

3. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 1, characterized in that: The chassis bracket (2) comprises a chassis frame (21), a connecting column (22) and a rotating shaft (23); the rotating shaft (23) is horizontally arranged in the upper middle area of ​​the chassis frame (21); the two ends of the rotating shaft (23) are respectively connected and fixed to the chassis frame (21) through diagonal brackets; the two ends of the rotating shaft (23) are respectively rotatably connected to the corresponding lower ends of the frame (1); the connecting column (22) is vertically fixed to the middle part of the upper end of the chassis frame (21); and the connecting rod driving mechanism is respectively connected to the upper ends of the connecting columns (22) of the two chassis brackets (2).

4. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 3 is characterized in that: Each group of driving wheels (3) is provided with two driving wheel frames corresponding to the two driving wheels (3) are respectively provided on both sides of the lower end of the chassis bracket (2), and the driving wheels (3) are rotatably mounted in the corresponding driving wheel frames.

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

6. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 3, characterized in that: Each group of driven wheels (4) is provided with two driven wheel frames corresponding to the two driven wheels (4) are provided on both sides of the lower end of the chassis bracket (2), and the driven wheels (4) are rotatably mounted in the corresponding driven wheel frames.

7. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 3 is characterized in that: Both sides of the connecting column (22) are respectively connected and fixed to the chassis frame (21) via diagonal braces.

8. An obstacle crossing mechanism for anti-corrosion patching equipment according to any one of claims 3 to 7, characterized in that: The connecting rod driving mechanism comprises a connecting rod (51) and a translation driving mechanism, wherein the connecting rod (51) passes through the two ends of the frame (1) horizontally and is slidably connected to the frame (1), a vertically extending through groove is provided inside the upper end of the connecting column (22), and strip holes are vertically opened on the side walls of the through groove, and ear plates are provided at both ends of the connecting rod (51) and respectively extend into the through grooves of the two connecting columns (22), and limit pins are horizontally penetrated on the ear plates and extend into the strip holes on both sides, and the translation driving mechanism is connected to the connecting rod (51) and is used to drive the connecting rod (51) to move along the length direction.

9. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 8, characterized in that: Guide sleeves (11) are provided at both ends of the frame (1), and both ends of the connecting rod (51) respectively penetrate the two guide sleeves (11) and are slidably matched with the guide sleeves (11).

10. The obstacle crossing mechanism for anti-corrosion patching equipment according to claim 8, characterized in that: A rack is fixed in the middle of the connecting rod (51) along its length direction. The translation drive mechanism comprises 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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