Epoxy coating spraying equipment for outer wall of steel pipe

Abstract

The utility model relates to steel pipe outer wall epoxy paint spraying equipment which comprises pipe seats, carrier rollers, a driving piece, a track, a movable spraying trolley and a spraying device, the pipe seats are arranged in pairs at intervals, the carrier rollers are installed on the pipe seats in pairs, the driving piece is in power connection with the carrier rollers, the track is installed on the side edges of the pipe seats, and the movable spraying trolley is connected with the spraying device. The length direction of the track is parallel to the axis of the steel pipe, the movable spraying trolley is slidably installed on the track, the spraying device is fixedly installed on the movable spraying trolley, and the paint spraying direction of the spraying device faces the surface of the steel pipe. The steel pipe outer wall epoxy paint spraying equipment can spray steel pipes with size flaws or tolerance, can effectively limit the displacement of the steel pipes during spraying, can stabilize the pipe seat by using the positioning clamp and the positioning rod, and is convenient to use. The problem that equipment shakes and vibrates after the steel pipe is limited can be solved, the spraying quality is improved, and the effect of uniform spraying is achieved by moving the spraying trolley and the spraying device.

Description

Technical Field

[0001] This utility model relates to the field of coating spraying equipment, and in particular to an epoxy coating spraying equipment for the outer wall of steel pipes. Background Technology

[0002] With the continuous progress of society and the continuous improvement of technology, the problem of pipe corrosion has always been one of the problems that plague people. At present, one of the simplest and most effective methods is to achieve the effect of corrosion prevention and rust prevention through anti-corrosion coating. For steel pipes, especially large-diameter steel pipes, the common method of corrosion prevention and rust prevention is to coat the outer wall with a layer of asphalt paint. The traditional method is to have workers manually apply the paint, which is labor-intensive and inefficient. Another method is to spray a layer of liquid epoxy coating on the outer wall of the steel pipe. This liquid epoxy coating is generally applied using a spray gun.

[0003] Liquid epoxy coatings are used to treat steel pipes for corrosion and rust prevention. This is generally done manually or automatically. Manual spraying is inefficient, while automated spraying, in order to achieve uniform coating of the outer wall of the steel pipe, involves either rotating the spray gun around the pipe or fixing the spray gun position so that the pipe rotates on its own. The rotating spray gun method requires more space for the equipment to move, while the spraying equipment with the fixed spray gun position and the pipe rotating on its own has high coating efficiency and occupies relatively less space. However, after the steel pipe is produced, it is not perfectly straight and has certain tolerances or dimensional defects. Equipment that uses rollers to drive the steel pipe to rotate may experience the problem of the steel pipe moving along its length due to the bending of the steel pipe itself. However, using a blocking structure may cause the steel pipe to vibrate due to friction, resulting in uneven coating. Furthermore, it may cause the roller equipment to vibrate, leading to resonance or even displacement of the equipment. In view of this, this application is hereby submitted. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model discloses an epoxy coating spraying equipment for the outer wall of steel pipes. It includes pipe supports, rollers, a drive unit, a track, a mobile spraying cart, a spraying device, and a pipe limiting mechanism. The pipe supports are arranged in pairs and spaced apart. The rollers are mounted on the pipe supports in pairs, forming a support frame capable of lifting the suspended steel pipe. The drive unit is poweredly connected to the rollers, enabling the rollers and steel pipe to rotate together. The track is installed on the side of the pipe supports, and its length direction is parallel to the axis of the steel pipe. The mobile spraying cart is slidably mounted on the track and can slide along the track's length direction. The spraying device is fixedly mounted on the mobile spraying cart. The coating spraying direction is directed towards the surface of the steel pipe, forming a dynamic spraying mechanism that can move along the length of the steel pipe to spray the outer wall of the steel pipe. The pipe limiting mechanism includes a sliding rod, a locking element, a support arm, and a limiting plug. A through hole is opened on the pipe seat along the length of the steel pipe. The sliding rod can be slidably installed in the through hole. The locking element has a locking ring. The locking element is located at the through hole and connected to the pipe seat. The locking ring is sleeved on the sliding rod, forming a fixed mechanism that can lock and position the sliding rod. The support arm is located on the side facing the end of the steel pipe. One end is fixedly connected to the end of the sliding rod, and the other end is rotatably connected to the limiting plug. The rotation axis of the limiting plug is coaxial with the steel pipe.

[0005] Specifically, the limiting plug is positioned towards the end of the steel pipe, and its diameter decreases from the rotatable connection with the support arm to the end of the steel pipe, forming a frustum shape.

[0006] Specifically, the limiting plug is made of a flexible material.

[0007] Specifically, the locking component is a quick-release straight rod clamp.

[0008] Specifically, the bottom of the tube seat is provided with a positioning clamp and a positioning rod. The positioning clamp includes a clamping ring, a screw, a nut, and a stop block. The tube seat has a through hole from bottom to top. The screw is inserted into the through hole and the threaded end is exposed at the bottom of the tube seat. The clamping ring has a through hole in its ring wall. The clamping ring is fitted onto the screw through the hole. The nut is located inside the clamping ring and is threadedly connected to the screw and fixedly connected to the inner wall of the clamping ring. The stop block is fixedly connected to the end face of the screw located inside the clamping ring. The stop block and the clamping ring together form a clamping gap. The positioning rod is fixed to the ground and has a distance from the ground. The positioning rod passes through the clamping gap.

[0009] Specifically, the mobile painting vehicle includes a support plate, track wheels, main support columns, and side support columns. The track wheels are rotatably mounted on the bottom surface of the support plate and in contact with the track. The main support columns and side support columns are both mounted on the support surface of the support plate, with the main support column located at the center of the support plate. There are two side support columns, which are arranged on both sides of the main support column, one near the pipe seat and the other far from the pipe seat.

[0010] Specifically, the spraying device includes a spraying machine, a probe arm, a sleeve, and a spray gun. The spraying machine is fixedly installed on the support plate. The probe arm is sleeved onto the main support to form a rotating end, and the other end is fitted with a spray gun to form a spraying end. The middle section of the probe arm is connected and fixed to the side support. The spray gun and the spraying machine are connected through a pipe to form a spraying material supply channel.

[0011] Specifically, a mounting sleeve is provided on the side support, the mounting sleeve is sleeved on the side support, and the outer wall has a protruding mounting platform, the mounting platform has a table surface that can place the probe arm.

[0012] Specifically, both the sleeve and the mounting sleeve are provided with locking screws. The end of the locking screw can abut against the sleeved support by tightening the screw, forming a positioning component that can position the height of the sleeve and the mounting sleeve on the main support and the side support, respectively.

[0013] Advantages and effects

[0014] This utility model's epoxy coating spraying equipment for the outer wall of steel pipes uses a pipe limiting mechanism, enabling the equipment to spray steel pipes with dimensional defects or tolerances. It effectively limits pipe displacement during spraying. Furthermore, the use of positioning clamps and rods stabilizes the pipe base, resolving equipment vibration issues caused by pipe limiting, thus improving spraying quality. The mobile spraying cart and spraying device allow for the movement of rotating steel pipes to spray liquefied epoxy coating, achieving uniform spraying and further enhancing spraying quality. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of the epoxy coating spraying equipment for the outer wall of steel pipe according to this utility model;

[0016] Figure 2 This is a partial enlarged view of the epoxy coating spraying equipment for the outer wall of steel pipe according to this utility model;

[0017] Figure 3 This is the second schematic diagram of the structure of the epoxy coating spraying equipment for the outer wall of steel pipe according to this utility model.

[0018] Legend: 1. Pipe base; 2. Idler roller; 3. Drive unit; 4. Track; 5. Mobile spray painting vehicle; 51. Support plate; 52. Track wheel; 53. Main support; 54. Side support; 55. Mounting sleeve; 56. Mounting platform; 6. Spraying device; 61. Spraying machine; 62. Probe arm; 63. Sleeve; 64. Spray gun; 7. Pipe limiting mechanism; 71. Slide rod; 72. Locking component; 73. Support arm; 74. Limiting plug; 8. Positioning clamp; 81. Clamping ring; 82. Screw; 83. Nut; 84. Abutment; 9. Positioning rod. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0020] like Figure 1 and Figure 3 As shown, this utility model relates to an epoxy coating spraying equipment for the outer wall of a steel pipe. It includes a pipe base 1, a roller 2, a drive unit 3, a track 4, a mobile spraying vehicle 5, and a spraying device 6. The pipe bases 1 are arranged in pairs and spaced apart. The rollers 2 are installed on the pipe bases 1 and are arranged in pairs. The paired rollers 2 form a bracket that can support the suspended steel pipe. The drive unit 3 is poweredly connected to the rollers 2 and can drive the rollers 2 and the steel pipe to rotate together. The track 4 is installed on the side of the pipe base 1 and is arranged parallel to the axis of the steel pipe in the length direction. The mobile spraying vehicle 5 is slidably installed on the track 4 and can slide along the length direction of the track 4. The spraying device 6 is fixedly installed on the mobile spraying vehicle 5 and the coating spraying direction of the spraying device 6 is towards the surface of the steel pipe, forming a dynamic spraying mechanism that can move along the length direction of the steel pipe to spray the outer wall of the steel pipe. In use, according to the required length of the steel pipe, the pipe seat 1 is positioned so that the two pipe seats 1 correspond to the positions of the two ends of the steel pipe respectively. The rollers 2, which are set in pairs on the pipe seats 1, can contact the outer wall of the steel pipe through the surface of the rollers and lift the steel pipe. When the rollers are driven to roll by the drive component, the steel pipe will also roll, forming a mechanism that allows the steel pipe to rotate. At the side position of the steel pipe, the spraying device 6 is set to spray the outer wall of the steel pipe. As the steel pipe rotates one revolution, the liquid epoxy coating covers the outer wall of the steel pipe around the position of the spraying device 6. Using the mobile spraying cart 5 and the track 4, the spraying device 6 can be moved along the length of the steel pipe. With the movement of the spraying device 6 and the rotation of the steel pipe driven by the rollers 2, the entire outer wall of the steel pipe can be sprayed with liquid epoxy coating.

[0021] like Figures 1 to 3As shown, in order to ensure that the steel pipe does not shift when rotating on the roller 2, it also includes a pipe limiting mechanism 7. The pipe limiting mechanism includes a slide rod 71, a locking element 72, a support arm 73, and a limiting plug 74. A through hole is opened on the pipe seat 1 along the length of the steel pipe. The slide rod 71 can be slidably installed in the through hole. The locking element 72 has a locking ring. The locking element 72 is located at the through hole and connected to the pipe seat 1. The locking ring is sleeved on the slide rod 71 to form a fixed mechanism that can lock and position the slide rod. The support arm 73 is located on the side facing the end of the steel pipe. One end is fixedly connected to the end of the slide rod 71, and the other end is rotatably connected to the limiting plug 74. The rotation axis of the limiting plug 74 is coaxial with the steel pipe. In use, first loosen the locking part 72, then pull out the slide rod 71 through the sliding through hole. As the pulling distance increases, the supporting arm 73 and the limiting plug 74 move away from the pipe seat 1, allowing the length of the steel pipe to be accommodated between the limiting plugs 74 on both sides. After placing the steel pipe on the idler roller 2, push the supporting arm 73 and the limiting plug back until the limiting plug 74 contacts the end of the steel pipe. Then lock the locking part 72 to prevent the slide rod 71 from sliding in the through hole, thus completing the adjustment of the limiting mechanism. In use, as the steel pipe rotates, the limiting plug 74, which is rotatably connected to the supporting arm 73, will also rotate with the steel pipe. This can reduce the vibration of the steel pipe or the vibration of the idler roller caused by friction. Furthermore, the same pipe limiting mechanism 7 is set at both ends to ensure that the steel pipe will not shift or slide due to its own bending or tolerance issues during rotating spraying, thus ensuring the stability of the spraying performance.

[0022] The limiting plug 74 is positioned towards the end of the steel pipe and has a truncated cone shape with its diameter decreasing from the rotatable connection point with the support arm 73 towards the end of the steel pipe. Positioned towards the pipe opening, its truncated cone shape (narrower at the front and wider at the rear) allows it to accommodate a wider range of pipe diameters. When the limiting plug 74 is inserted into the steel pipe opening and locked in place by the locking slide rod 71, the steel pipe is stably controlled, preventing displacement during rotation. Furthermore, the limiting plug 74 provides better follow-up movement with the steel pipe after insertion, avoiding friction between the pipe end and the limiting component. Moreover, the limiting plug 74 is made of a flexible material, such as hard plastic or a hard material filled with a layer of soft silicone, achieving the limiting effect while providing a certain buffer margin, making it compatible with steel pipes with dimensional tolerances or defects.

[0023] Furthermore, the locking element 72 is a quick-release straight rod clamp, which is commonly used on bicycle seatposts. It can quickly clamp or release when the steel pipe needs to be removed after the painting is completed or when the slide rod 71 needs to be tightened, and it has a good clamping and holding effect.

[0024] like Figure 2As shown, after the steel pipe is limited, although the steel pipe will not shift, the entire roller mechanism will vibrate and shake during the rotation of the steel pipe when it is bent. This can easily lead to equipment misalignment, resulting in changes in the spraying spacing and poor spraying effect. However, if the pipe seat 1 is fixed to the bottom, it is inconvenient to move the pipe seat 1 when the spacing needs to be adjusted for steel pipes of different lengths. In order to solve the problems of steel pipe length compatibility and roller base fixation, the bottom of the pipe seat 1 is provided with a positioning clamp 8 and a positioning rod 9. The positioning clamp 8 includes a clamping ring 81, a screw 82, a nut 83 and a stop block. 84. The tube seat 1 has a through hole from bottom to top. The screw 82 is inserted into the through hole and the threaded end is exposed at the bottom of the tube seat 1. The clamping ring 81 has a through hole in its ring wall. The clamping ring 81 is fitted onto the screw 82 through the hole. The nut 83 is located inside the clamping ring 81 and is threadedly connected to the screw 82. It is also fixedly connected to the inner wall of the clamping ring 81. The abutment 84 is fixedly connected to the end face of the screw 82 located inside the clamping ring 81. The abutment 84 and the clamping ring 81 together form a clamping gap. The positioning rod 9 is fixedly installed on the ground and has a distance from the ground. The positioning rod 9 passes through the clamping gap. In use, first, fix the positioning rod 9 flat on the ground using a bracket and expansion bolts, ensuring the positioning rod 9 is suspended off the ground. Positioning rods 9 are arranged in pairs, parallel to each other. Then, place the clamping ring 81 from the positioning clamp 8 onto the positioning rod 9. Position the tube seat 1, insert the screw 82 through the through hole of the tube seat 1, through the through hole, through the wall of the clamping ring 81, and through the nut 83 fixed at that position. Tighten the screw, and then fix a stop block 84 at the end. During the gradual tightening of the screw 82, the clamping ring 81 and the stop block 84... 4. The positioning rod 9 is clamped together to fix the position of the pipe seat 1. When it is necessary to increase the distance between the pipe seats 1 or to move them, the screw 82 is loosened. The clamping force of the clamping ring 81 and the abutment 84 on the positioning rod 9 will be relaxed, and the pipe seat 1 can be moved on the positioning rod 9. By clamping and fixing, in conjunction with the limiting structure of the steel pipe, the steel pipe will not be displaced when rotating to spray epoxy coating, and the equipment will not resonate and vibrate due to being limited, thus ensuring the stability of the spraying process and improving the uniformity of the spraying effect.

[0025] Furthermore, to accommodate different pipe diameters, the base of the idler roller 2 is detachable and fixed to the pipe seat 1 with bolts. Multiple bolt holes are provided on the pipe seat 1, allowing the idler roller 2 to be installed on different bolt holes as needed, thereby enabling the adjustment of the distance between the two idler rollers 2 and expanding the compatibility with different pipe diameters.

[0026] like Figure 1 and Figure 3As shown, the mobile spray painting vehicle 5 includes a support plate 51, track wheels 52, main support column 53, and side support columns 54. The track wheels 52 are rotatably mounted on the bottom surface of the support plate 51 and are in contact with the track 4. The main support column 53 and the side support columns 54 are both mounted on the support surface of the support plate 51, with the main support column 53 located at the center of the support plate 51. There are two side support columns 54, which are arranged on both sides of the main support column 53, one near the pipe seat 1 and the other away from the pipe seat 1. The track 2 is arranged parallel to the positioning rod 9. The support plate 51 moves on the track via the track wheels 52. The main support column 53 and the side support columns 54 are used for installing and adjusting the spraying equipment. Using the mobile spray painting vehicle 5, the spraying device 6 can be moved at a uniform speed to spray the outer wall of the steel pipe from beginning to end.

[0027] The spraying device 6 includes a sprayer 61, a probe arm 62, a sleeve 63, and a spray gun 64. The sprayer 61 is fixedly mounted on the support plate 51. The probe arm 62 is sleeved onto the main support 53 via the sleeve 63 to form a rotating end, and the other end is fitted with the spray gun 64 to form a spraying end. The middle section of the probe arm 62 is connected and fixed to the side support 54. The spray gun 64 and the sprayer 61 are connected by a pipe to form a spraying material supply channel. The sprayer 61 is used to supply liquid epoxy coating to the spray gun 64. The probe arm 62 is rotatably mounted on the main support 53 via the sleeve 63. The direction of the probe arm 62 can be rotated by moving it. The probe arm 62 can be a telescopic structure, compatible with steel pipes of different diameters, and can control the spraying distance when spraying liquid epoxy coating.

[0028] A mounting sleeve 55 is provided on the side support 54. The mounting sleeve 55 is sleeved on the side support 54, and the outer wall has a protruding mounting platform 56. The mounting platform 56 has a table surface that can place the probe arm 62. The mounting sleeve 55 can be raised and lowered by being fitted onto the side support 54. The mounting platform 56 allows the probe arm 62 to be placed on the platform for stable spraying. The probe arm 62 can be raised and lowered to adapt to the diameter of the steel pipe through the sleeve 63 and the mounting sleeve 55. Since the axial height of steel pipes of different diameters placed on the roller is also different, the use of the raise and lowerable and stable probe arm 62 can achieve compatibility of spraying different pipe diameters. Both the sleeve 63 and the mounting sleeve 55 are equipped with locking screws. The end of the locking screw can abut against the sleeved support by tightening the screw, forming a positioning part that can position the height of the sleeve 63 and the mounting sleeve 55 on the main support 53 and the side support 54, respectively. The locking screw is used to lock at a certain height, so that the spray gun at the front end of the probe arm 62 can spray stably.

[0029] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the embodiments of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A steel pipe outer wall epoxy coating spraying equipment, characterized in that: It includes pipe seat (1), carrier roller (2), driving part (3), track (4), mobile spraying vehicle (5), spraying device (6) and pipe limiting mechanism (7), the pipe seat (1) is arranged in pairs and is spaced, carrier roller (2) is installed on the pipe seat (1) and is arranged in pairs, and the carrier roller (2) forms a bracket capable of lifting the steel pipe in the air, the driving part (3) is power connected with the carrier roller (2), can drive the carrier roller (2) to rotate together with the steel pipe, the track (4) is installed on the side of the pipe seat (1), and the length direction of the track (4) is arranged in parallel with the axis of the steel pipe, the mobile spraying vehicle (5) is slidably installed on the track (4), and can slide along the length direction of the track (4), the spraying device (6) is fixedly installed on the mobile spraying vehicle (5), and the coating spraying direction of the spraying device (6) is towards the surface of the steel pipe, forming a dynamic spraying mechanism capable of spraying the outer wall of the steel pipe along the length direction of the steel pipe, the pipe limiting mechanism (7) includes slide rod (71), locking part (72), support arm (73) and limiting plug (74), the pipe seat (1) is provided with a through hole along the length direction of the steel pipe, the slide rod (71) is slidably installed in the through hole, the locking part (72) has a locking ring, the locking part (72) is connected with the pipe seat (1) at the position of the through hole, and the locking ring is sleeved on the slide rod (71), forming a fixing mechanism capable of locking and positioning the slide rod, the support arm (73) is arranged on the side towards the end of the steel pipe, and one end is fixedly connected with the end of the slide rod (71), and the other end is rotatably connected with the limiting plug (74), and the rotation axis line of the limiting plug (74) is coaxially arranged with the steel pipe.

2. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 1, characterized in that: The limiting plug (74) is arranged towards the end of the steel pipe, and is in the shape of a truncated cone from the rotating connection of the support arm (73) to the diameter decreasing towards the end of the steel pipe.

3. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 2, characterized in that: The limiting plug (74) is made of flexible material.

4. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 2, characterized in that: The locking part (72) is a quick-release straight rod clamp.

5. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 1, characterized in that: The bottom of the pipe seat (1) is provided with a positioning clamp (8) and a positioning rod (9), the positioning clamp (8) includes a clamping ring (81), a screw rod (82), a nut (83) and a stop block (84), the pipe seat (1) is provided with a through hole from the bottom to the top, the screw rod (82) is inserted into the through hole, and the end with threads is exposed at the bottom of the pipe seat (1), the clamping ring (81) is provided with a through hole on the wall of the ring, and the clamping ring (81) is sleeved on the screw rod (82) through the hole, the nut (83) is threadedly connected with the screw rod (82) in the ring of the clamping ring (81), and is fixedly connected with the inner wall of the clamping ring (81), the stop block (84) is fixedly connected to the end face of the screw rod (82) in the ring of the clamping ring (81), and the stop block (84) and the clamping ring (81) form a clamping gap, the positioning rod (9) is fixedly installed on the ground and has a ground clearance, and the positioning rod (9) passes through the clamping gap.

6. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 1, characterized by: The mobile spraying vehicle (5) comprises a supporting plate (51), a track wheel (52), a main support column (53) and a side support column (54), the track wheel (52) is rotatably installed on the bottom surface of the supporting plate (51) and is in contact with the track (4), the main support column (53) and the side support column (54) are both installed on the supporting surface of the supporting plate (51), and the main support column (53) is arranged at the central position of the supporting plate (51), the number of the side support columns (54) is two, and the side support columns (54) are arranged on the two sides close to and away from the pipe base (1) of the main support column (53).

7. The steel pipe outer wall epoxy coating paint spraying apparatus according to claim 1, characterized by: The spraying device (6) comprises a spraying machine (61), a probe arm (62), a sleeve (63) and a spray gun (64), the spraying machine (61) is fixedly installed on the supporting plate (51), the probe arm (62) is sleeved on the main support column (53) through the sleeve (63) to form a rotating end, the other end is installed with the spray gun (64) to form a spraying end, the middle segment of the probe arm (62) is connected and fixed with the side support column (54), and the spray gun (64) is in communication with the spraying machine (61) through the pipe to form a spraying feeding passage.

8. The steel pipe exterior wall epoxy coating paint spraying apparatus according to claim 7, characterized in that: The side support column (54) is provided with a bracket sleeve (55), the bracket sleeve (55) is sleeved on the side support column (54), and the outer wall has a protruding bracket table (56), and the bracket table (56) has a table surface capable of placing the probe arm (62).

9. The steel pipe exterior wall epoxy coating paint spraying apparatus according to claim 8, characterized in that: The sleeve (63) and the bracket sleeve (55) are both provided with locking screws, the end part of the locking screw can abut against the sleeved support column by tightening the screw, and the locking screw forms a positioning member capable of positioning the height of the sleeve (63) and the bracket sleeve (55) on the main support column (53) and the side support column (54) respectively.

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