Pipeline line drawing device

Abstract

The invention discloses a pipeline line drawing device, and relates to the technical field of long pipeline pretreatment. The pipeline line drawing device comprises a walking line drawing structure and a limiting track, and the walking line drawing structure rolls and walks on the limiting track; the walking line drawing structure comprises a movable frame body, a line drawing structure, a driving structure, a driven structure and a limiting wheel, and the line drawing structure is arranged on the movable frame body and used for marking the outer surface of a pipeline to be marked; the driving structure is arranged on the movable frame body and used for driving the movable frame body to move along the pipeline to be marked; the driven structures are arranged on the two sides of the movable frame body and used for tightly holding a pipeline to be marked. And the limiting wheels are arranged at the lower end of the movable frame body, are in rolling connection with the limiting rails and move along the limiting rails. The walking line drawing structure is adopted, drawing errors caused by manual operation are avoided, it is guaranteed that the line drawing structure draws an axial straight line on the surface of the pipeline to be drawn, line drawing operation is simple and rapid, and the accuracy of obtained marking lines is high.

Description

Technical Field

[0001] The invention relates to the technical field of long pipeline pretreatment, and in particular to a pipeline marking device. Background Art

[0002] During construction or manufacturing, it is often necessary to draw lines and mark the surface of the pipe, including the axial marking line of the pipe. The conventional method is to draw marking points on the two ends and the middle side wall of the round pipe, connect the marking points into a line with a marker and a ruler, or fix it with an ink fountain and then draw the line. However, the above method is slow and prone to human operation errors, resulting in the straight line not being parallel to the axis of the round pipe. Especially when dealing with longer and larger pipes (length of 3 to 5 meters and diameter of 30 to 50 cm), it is impossible to use conventional line drawing methods for accurate marking. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a pipeline drawing device. The walking drawing structure is driven by a motor to move the drawing brush to draw a straight line parallel to the pipeline axis on the surface of the pipeline to be drawn. The drawing is quick and convenient with higher accuracy.

[0004] To achieve this technical purpose, the present invention adopts the following scheme: The pipeline marking device includes a walking marking structure and a limiting track. The walking marking structure rolls and moves on the limiting track; the walking marking structure has a moving frame, a marking structure, a driving structure, a driven structure and a limiting wheel. The marking structure is arranged on the moving frame and is used to mark the outer surface of the pipeline to be marked; the driving structure is arranged on the moving frame and is used to drive the moving frame to move along the pipeline to be marked; the driven structure is arranged on both sides of the moving frame and is used to hold the pipeline to be marked, so as to accurately limit the walking trajectory of the marking structure; the limiting wheel is installed at the lower end of the moving frame, the limiting wheel is rollingly connected to the limiting track, and moves along the limiting track to assist and limit the walking trajectory of the moving frame to be a straight line.

[0005] Compared with the prior art, the beneficial effects of the present invention are: the walking line drawing structure is adopted to avoid drawing errors caused by human operation, the driving structure drives the walking line drawing structure to move in a straight line along the limiting track, the driven structure ensures the walking stability of the walking line drawing structure, and further ensures that the line drawing structure draws an axial straight line on the surface of the pipeline to be marked, the line drawing operation is simple and fast, and the marking line is high in accuracy.

[0006] Furthermore, the line drawing structure includes a paintbrush, a pen tube with upper and lower open openings, and a top screw. The pen tube is fixed on the movable frame, the paintbrush is inserted in the pen tube, the brush head extends out of the lower end of the pen tube and fits against the outer wall of the pipe to be drawn, so that the paintbrush can smoothly make line marks on the pipe to be drawn; a through threaded hole is opened on the side wall of the pen tube, the top screw is threadedly connected to the threaded hole, and the end of the top screw located in the inner cavity of the pen tube is abutted and pressed against the side wall of the brush, thereby realizing temporary fixation of the paintbrush, and the paintbrush is replaced by adjusting the top screw.

[0007] Furthermore, the driving structure includes a servo motor, a driving wheel, a belt, a driven wheel and an active walking wheel. The servo motor is arranged on a mobile frame, and the driving wheel is installed on the output shaft of the servo motor. The driving wheel and the driven wheel are connected by a belt. The driven wheel and the active walking wheel are fixed on the same rotating shaft, so that the driven wheel drives the active walking wheel to move, and the wheel surface of the active walking wheel contacts the outer wall of the pipe to be drawn, thereby ensuring that the walking brush structure runs smoothly on the pipe and walks stably.

[0008] Furthermore, the mobile frame includes a crossbeam and side columns. The side columns are fixed at both ends of the crossbeam. The side columns are upward and downward telescopic structures. The telescopic ability of the side columns is used to adjust the height of the crossbeam of the mobile frame, thereby adapting to pipes of different diameters.

[0009] Furthermore, the driven structure includes a driven walking wheel and a wheel frame, a screw is fixedly connected to the top of the wheel frame, the screw is threadedly connected to the side column of the mobile frame, and a nut is threadedly connected to the screw, the end face of the nut is in contact with the outer wall of the side column of the mobile frame, and the position of the driven walking wheel is adjusted by the screw to adapt to pipes of different diameters.

[0010] Furthermore, the limiting track is a C-type track, and the limiting wheel rolls in the C-type track. The limiting wheel is rotatably connected to the lower end of the mobile frame, and the lower end side wall of the mobile frame is close to the open side wall of the C-type track. The moving direction of the mobile frame is limited by the C-type track, and the C-type track and the limiting wheel are used to ensure that the mobile frame moves in a straight line.

[0011] Furthermore, the limiting track is an I-beam track, the limiting wheel is a structure with convex sides and a concave middle wheel surface, and the middle concave surface of the limiting wheel is rollingly connected to the I-beam.

[0012] Furthermore, there are two limit rails, and the ends of the two limit rails are connected by a door-shaped frame to ensure that the two limit rails are arranged relatively parallel.

[0013] Furthermore, the columns and cross bars of the door frame are both telescopic rod structures. The distance between the two limit rails is adjusted by telescoping the cross bars of the door frame to adapt to pipes of different diameters. The telescopic adjustment of the door frame columns ensures that the door frame will not be affected by the diameter of the pipe and cause the equipment to be unable to touch the ground.

[0014] Furthermore, there are two walking marking structures, one of which is a verification device to verify whether the mark made by the other walking marking structure on the surface of the pipe to be marked is an axial straight line, thereby improving the accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of a pipeline marking device provided by the present invention; Figure 2 An axonometric diagram of a pipeline marking device provided by the present invention; Figure 3 Another implementation structure of a limiting track and a limiting wheel of a pipeline marking device provided by the present invention; Figure 4 Some other preferred implementation structure diagrams of a pipeline marking device provided by the present invention; The markings in the figure are: 1. Mobile frame; 2. Driving structure; 21. Servo motor; 22. Driving wheel; 23. Belt; 24. Driven wheel; 25. Active walking wheel; 3. Driven structure; 31. Driven walking wheel; 32. Wheel frame; 33. Screw; 34. Nut; 4. Drawing structure; 41. Pen tube; 42. Paintbrush; 43. Top screw; 5. Limiting wheel; 6. Limiting track; 7. Pipe to be drawn; 8. Door frame. DETAILED DESCRIPTION

[0016] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0017] like Figures 1 to 4 As shown, a pipeline marking device provided by the present invention includes a running marking structure and a limiting track 6, the running marking structure is rollingly connected to the limiting track 6, and the running marking structure runs in a straight line on the limiting track 6.

[0018] The walking line drawing structure includes a mobile frame 1, a line drawing structure 4, a driving structure 2, a driven structure 3 and a limiting wheel 5. The line drawing structure 4 is installed on the mobile frame 1, and the line drawing structure 4 draws a marked straight line on the surface of the pipe to be marked; the driving structure 2 is installed on the mobile frame 1, and the driving structure 2 drives the mobile frame 1 to move axially along the pipe to be marked 7; the middle part of the mobile frame 1 is installed with a symmetrically arranged driven structure 3, and the driven structure 3 is used to hold the pipe to be marked 7, so as to accurately limit the walking trajectory of the line drawing structure 4; the lower end of the mobile frame 1 is equipped with a rotatable limiting wheel 5, which is rollingly connected to the limiting track 6 and moves along the limiting track 6 to assist and limit the walking trajectory of the mobile frame 1 to be a straight line.

[0019] In some preferred embodiments, the line drawing structure 4 includes a paintbrush 42, a pen tube 41 with upper and lower openings, and a top screw 43. The pen tube 41 is fixed on the mobile frame 1, preferably at the upper position of the mobile frame 1; the paintbrush 42 is inserted into the pen tube 41, and the lower end of the paintbrush 42 extends out of the lower end of the pen tube 41 and is exposed to the outside. When working, the pen tip fits the outer wall of the pipe 7 to be drawn, and a line can be drawn. The side wall of the pen tube 41 is provided with a threaded hole that vertically passes through the side wall, and the top screw 43 is threadedly connected to the threaded hole, and the end face of the top screw 43 located in the inner cavity of the pen tube 41 is pressed against the side wall of the paintbrush 42 in the pen tube 41, and the paintbrush 42 is temporarily fixed in the pen tube 41. When the paintbrush 42 needs to be replaced, the top screw 43 can be adjusted.

[0020] like Figure 2 As shown, the driving structure 2 includes a servo motor 21, a driving wheel 22, a belt 23, a driven wheel 24 and an active walking wheel 25. The servo motor 21 is fixed or detachably fixed to the upper part of the mobile frame 1. The driving wheel 22 is installed on the output shaft of the servo motor 21. The driving wheel 22 and the driven wheel 24 are connected by a belt 23. The driven wheel 24 and the active walking wheel 25 are fixed on the same rotating shaft. This rotating shaft is rotatably connected to the mobile frame 1 through a bearing, so that the driven wheel 24 drives the active walking wheel 25 to move, and the wheel surface of the active walking wheel 25 contacts the outer wall of the pipe 7 to be drawn. Preferably, a battery box (not shown in the drawings) is also provided on the top of the mobile frame 1. The battery box contains batteries. The battery box is electrically connected to the servo motor 21 to provide it with electric energy. The servo motor 21 is started, driving the driving wheel 22 to rotate, further driving the driven wheel 24 to rotate through the belt 23, and finally driving the active walking wheel 25 to rotate, so as to realize the walking of the mobile frame 1.

[0021] The mobile frame 1 includes a crossbeam and two side columns, the side columns are fixed at the two ends of the crossbeam, and the side columns are column structures that can be extended and retracted up and down (not shown in the drawings), and any column or rod that can be extended and retracted to adjust the length in the prior art can be used. When the diameter of the pipe 7 to be marked is large or small, the height of the side columns is adjusted to ensure that the active walking wheel 25 and the tip of the brush 42 are in contact with the outer wall of the pipe 7 to be marked.

[0022] The driven structure 3 includes a driven running wheel 31 and a wheel frame 32. The driven running wheel 31 is rotatably connected to the wheel frame 32. A screw 33 is fixedly connected to the top of the wheel frame 32. The screw 33 is threadedly connected to the side column of the mobile frame 1, and a nut 34 is threadedly connected to the screw 33. The end face of the nut 34 is in contact with the outer wall of the side column of the mobile frame 1. The position of the driven running wheel 31 is adjusted by the screw 33 to adapt to pipes of different diameters.

[0023] In some more preferred embodiments, Figure 4As shown, there are two limit rails 6, which are arranged in parallel, and the ends of the two limit rails 6 on the same side are connected by a door frame 8 to ensure that the two limit rails 6 are always arranged relatively parallel. When the limit rail 6 is too long, multiple door frames 8 can be set in the middle, but the height of the door frame 8 is required to be higher than the height of the mobile frame 1 to ensure that the mobile frame 1 can move smoothly.

[0024] Preferably, the door-shaped frame 8 includes columns and cross bars, and both the columns and cross bars are telescopic rod structures. The telescopic nature of the columns is adapted to pipes of different diameters, ensuring that the existence of the door-shaped frame 8 will not affect the normal movement of the walking marking structure; the telescopic nature of the cross bars is also for adapting to pipes of different diameters, ensuring that the distance between the limiting rails 6 meets the normal walking of the walking marking mechanism.

[0025] There are two implementation methods of the limiting track 6: (1) The limiting track 6 is a C-shaped steel track with the C-shaped opening facing upward. In order to ensure the stability of the moving frame, there are two limiting wheels 5. The two limiting wheels 5 are rotatably connected to the lower end of the moving frame 1 through an axle. Both limiting wheels 5 run in the C-shaped steel track. The side column of the moving frame 1 is close to the side wall of the upper opening of the C-shaped steel track. The side column is limited by the opening, so that the moving frame is guaranteed to move in a straight line along the limiting track as a whole. Figure 1 (2) The limiting track 6 is an I-beam track. The upper surface of the I-beam track is a convex structure that matches the concave surface of the limiting wheel 5. The limiting wheel 5 is a structure with convex surfaces on both sides and a concave surface in the middle. The middle concave surface of the limiting wheel 5 is connected to the I-beam in a rolling manner. The convex surfaces on both sides ensure that the limiting wheel 5 will not derail when walking along the limiting track 6. Figure 3 shown.

[0026] In some other preferred embodiments, the number of the walking line drawing structures is two, such as Figure 2 and Figure 4 As shown, one of the walking line drawing structures is a verification device to verify whether the straight line drawn by the other walking line drawing structure is an axial straight line. When the two lines coincide, it proves that the drawn marking straight line is accurate. If the two lines do not coincide, it is necessary to readjust the driven walking wheel and the limit track and re-perform the line drawing operation. Preferably, the pens of the two walking line drawing structures are of different colors so that measures can be taken during adjustment.

[0027] Directions: Use other tools to fix the two ends of the pipe 7 to be marked. The pipe 7 to be marked can be placed on the foundation surface or suspended in the middle. The limit rails 6 are placed on both sides of the pipe 7 to be marked, and the limit rails 6 are parallel to the axis of the pipe 7 to be marked. Manually adjust the mobile frame 1 to the end of the pipe 7 to be marked, adjust the height of the side column of the mobile frame 1, make the active walking wheel 25 contact the upper outer wall of the pipe 7 to be marked, and the driven walking wheel 31 also contact the outer wall of the pipe 7 to be marked. The tip of the brush 42 contacts the side wall of the pipe 7 to be marked, turn on the servo motor 21, and the mobile frame 1 starts to walk in a straight line along the outer wall of the pipe 7 to be marked. The brush 42 draws a marked straight line on the outer wall of the pipe to be marked. When the mobile frame 1 reaches the other end of the pipe 7 to be marked, turn off the servo motor 21.

[0028] The other walking line drawing structure used for verification is opened later than the previous walking line drawing structure. When it is found that the two marking lines do not overlap, the equipment is stopped in time for adjustment. After adjustment, the line drawing is started again.

[0029] Finally, it should be noted that the above-listed embodiments are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A pipeline marking device, characterized in that: It includes a walking line drawing structure and a limit track, and the walking line drawing structure rolls and walks on the limit track; Walking line drawing structure moving frame, line drawing structure, driving structure, driven structure and limit wheel, The marking structure is arranged on the mobile frame and is used to mark the outer surface of the pipe to be marked; The driving structure is arranged on the moving frame and is used to drive the moving frame to move along the pipeline to be marked; The driven structure is arranged on both sides of the moving frame, and is used to hold the pipe to be marked tightly, so as to accurately limit the walking track of the marking structure; The limiting wheel is installed at the lower end of the mobile frame, and the limiting wheel is rollingly connected to the limiting track and moves along the limiting track to assist and limit the walking track of the mobile frame to be a straight line.

2. The pipeline marking device according to claim 1, characterized in that: The line drawing structure comprises a paintbrush, a pen tube with upper and lower openings and a top screw. The pen tube is fixed on a movable frame, the paintbrush is inserted into the pen tube, the tip of the paintbrush extends out of the lower end of the pen tube and fits against the outer wall of a pipe to be drawn, so that the paintbrush can smoothly make a line mark on the pipe to be drawn; a through threaded hole is provided on the side wall of the pen tube, the top screw is threadedly connected to the threaded hole, and the end of the top screw located in the inner cavity of the pen tube is abutted and pressed against the side wall of the paintbrush, so as to realize temporary fixation of the paintbrush.

3. The pipeline marking device according to claim 1, characterized in that: The driving structure includes a servo motor, a driving wheel, a belt, a driven wheel and an active walking wheel. The servo motor is arranged on a mobile frame. The driving wheel is installed on the output shaft of the servo motor. The driving wheel and the driven wheel are connected by a belt. The driven wheel and the active walking wheel are fixed on the same rotating shaft, so that the driven wheel drives the active walking wheel to move, and the wheel surface of the active walking wheel contacts the outer wall of the pipe to be marked.

4. The pipeline marking device according to claim 1, characterized in that: The mobile frame comprises a crossbeam and side columns. The side columns are fixed at both ends of the crossbeam and are of an up-and-down telescopic structure.

5. The pipeline marking device according to claim 4, characterized in that: The driven structure includes a driven traveling wheel and a wheel frame, a screw is fixedly connected to the top of the wheel frame, the screw is threadedly connected to the side column of the mobile frame, and a nut is threadedly connected to the screw, the end face of the nut is in contact with the outer side wall of the side column of the mobile frame, and the position of the driven traveling wheel is adjusted by the screw.

6. The pipeline marking device according to claim 1, characterized in that: The limiting track is a C-type track, and the limiting wheel rolls in the C-type track. The limiting wheel is rotatably connected to the lower end of the mobile frame. The lower end side wall of the mobile frame is close to the open side wall of the C-type track, and the moving direction of the mobile frame is limited by the C-type track.

7. The pipeline marking device according to claim 1, characterized in that: The limiting track is an I-beam track, the limiting wheel is a structure with convex sides and concave middle wheel surface, and the middle concave surface of the limiting wheel is rollingly connected with the I-beam.

8. The pipeline marking device according to claim 1, characterized in that: There are two limit rails, and the ends of the two limit rails are connected through a door-shaped frame to ensure that the two limit rails are arranged relatively parallel.

9. The pipeline marking device according to claim 8, characterized in that: The door frame includes upright posts and cross bars, and both the upright posts and cross bars are telescopic rod structures.

10. The pipeline marking device according to claim 1, characterized in that: There are two walking line drawing structures, one of which is a verification device for verifying the marking line made by the other walking line drawing structure on the surface of the pipeline to be marked.

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