A synchronous curing and heating device for a double-layer coated steel pipe

Abstract

The utility model relates to steel pipe manufacturing technical field discloses a kind of double-layer coating steel pipe synchronous curing heating device, including shell, the inner wall of shell is fixedly connected with connecting mechanism, the top of shell is fixedly connected with fixed mechanism, the bottom of shell is fixedly connected with support, the inner wall rotationally connected with conveyor belt in the top of support, the outside fixed connection of fixed mechanism has pipeline;The connecting mechanism includes two chutes, the far side of two the chute is fixedly connected in the front and rear inner wall of shell, the inner wall of two the chute is slidably connected with multiple moving plate.In the utility model, effectively handle the double-layer coating steel pipe synchronous curing heating device in use exists the problem that heating plate is inconvenient to replace, reduce equipment downtime maintenance time, guarantee the continuity of production, improve the use reliability and practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe manufacturing technology, and in particular to a synchronous curing and heating device for double-coated steel pipes. Background Technology

[0002] Double-coated steel pipes are composite pipes with two layers of different functional coatings sequentially applied to the surface of the steel pipe substrate. They are widely used in scenarios with high requirements for pipeline protection, such as oil transportation, building water supply and drainage, and municipal engineering. The bottom coating typically possesses excellent adhesion and corrosion resistance, tightly adhering to the steel pipe surface to form the first line of defense. The outer coating focuses on properties such as wear resistance, weather resistance, or impact resistance, further enhancing the overall durability of the steel pipe. These pipes effectively resist corrosion, friction, and other damage from the external environment, significantly extending their service life and providing a solid guarantee for the stable operation of pipeline systems in related fields.

[0003] The working principle of the synchronous curing heating device for double-coated steel pipes is to uniformly heat the double-coated steel pipe using specific heating components such as induction heating coils and hot air circulation systems, allowing heat to be rapidly and stably transferred to the surface of the steel pipe and into both coating layers. Under set temperature and time parameters, the device ensures that both coating layers simultaneously reach the conditions required for the curing reaction, promoting chemical or physical changes within the coating material and achieving a strong bond between the coating and the steel pipe substrate and the two coating layers. This efficiently completes the synchronous curing process, ensuring the quality of the cured coating and the protective performance of the steel pipe.

[0004] However, some existing double-layer coated steel pipe synchronous curing heating devices suffer from inconvenient heating plate replacement. When the heating plate ages or is damaged due to prolonged high-temperature operation and needs replacement, operators must first disassemble numerous fastening components, a cumbersome process that is time-consuming and labor-intensive. Furthermore, the lack of a dedicated positioning and guiding structure makes it difficult to quickly and accurately align the new heating plate during installation. This not only prolongs equipment downtime for maintenance and affects production continuity but also easily leads to reduced heating uniformity due to installation deviations, thus adversely affecting the subsequent coating curing quality. Therefore, a new double-layer coated steel pipe synchronous curing heating device is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a synchronous curing heating device for double-layer coated steel pipes, which aims to improve the problem of inconvenient replacement of heating plates in the use of existing synchronous curing heating devices for double-layer coated steel pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a double-layer coated steel pipe synchronous curing heating device, comprising a shell, a connecting mechanism fixedly connected to the inner wall of the shell, a fixing mechanism fixedly connected to the top of the shell, a support fixedly connected to the bottom of the shell, a conveyor belt rotatably connected to the inner wall of the top of the support, and a pipe fixedly connected to the outside of the fixing mechanism; the connecting mechanism includes two sliding grooves, the far sides of the two sliding grooves are fixedly connected to the front and rear inner walls of the shell, multiple moving plates are slidably connected to the inner walls of the two sliding grooves, a retractable rod is fixedly connected to the near side of the multiple moving plates, a fixed chamber is fixedly connected to the near side of the multiple retractable rods, a connecting chamber is fixedly connected to the inner wall of the multiple fixed chambers, two limiting strips are fixedly connected to the far side of the inner wall of the multiple connecting chambers, two limiting blocks are fixedly connected to the far side of the two limiting strips, and a limiting component is fixedly connected to the near side of the two limiting strips.

[0007] As a further description of the above technical solution: the fixing mechanism includes two fixing blocks, the bottom ends of the two fixing blocks are fixedly connected to the top of the outer shell, the two fixing blocks are rotatably connected to a connecting shaft, push rods are fixedly connected to the far sides of the two connecting shafts, telescopic rods are fixedly connected to the far sides of the two push rods, connecting columns are fixedly connected to the bottom ends of the near sides of the two telescopic rods, large plates are fixedly connected to the outside of the far sides of the two connecting columns, medium plates are fixedly connected to the outside of the two connecting columns, multiple telescopic columns one are fixedly connected to the outside of the two large plates, fixing plates one are fixedly connected to the far sides of the multiple telescopic columns one, multiple telescopic columns two are fixedly connected to the outside of the two medium plates, fixing plates two are fixedly connected to the far sides of the multiple telescopic columns two, multiple telescopic columns three are fixedly connected to the outside of the near sides of the two connecting columns, and fixing plates three are fixedly connected to the far sides of the multiple telescopic columns three.

[0008] As a further description of the above technical solution: the limiting component includes multiple push blocks, the external parts of the multiple push blocks are fixedly connected to the external parts of the multiple limiting strips, the top of each of the multiple push blocks is fixedly connected to a connecting block, the inner wall of the top of each of the multiple connecting blocks is rotatably connected to a rotating shaft, the top of each of the multiple connecting blocks is fixedly connected to a second shrinking column, the external parts of each of the multiple rotating shafts are fixedly connected to a moving strip, the far sides of each of the multiple moving strips are rotatably connected to a control strip, the far sides of each of the two limiting strips are fixedly connected to a first shrinking column, the external parts of each of the multiple first shrinking columns are sleeved with springs, the internal parts of the near sides of each of the multiple limiting strips are fixedly connected to a guide strip, and the near sides of each of the multiple fixed chambers are fixedly connected to a heating semi-ring plate.

[0009] As a further description of the above technical solution: the upper and lower sides of the multiple connecting compartments are provided with sliding grooves, and the upper and lower ends of the multiple guide bars are slidably connected to the inner walls of the upper and lower ends of the connecting compartments.

[0010] As a further description of the above technical solution: the top ends of the multiple shrinkage columns are fixedly connected to the inner walls of the top ends of the multiple connecting chambers, and the bottom ends of the multiple control strips are fixedly connected to the top ends of the opposite sides of the multiple fixed chambers.

[0011] As a further description of the above technical solution: the external fixed connection of the plurality of limiting blocks is fixedly connected to the inner wall of the plurality of retractable rods on the same side, the opposite side of the plurality of limiting strips is fixedly connected to the inner wall of the plurality of retractable rods on the same side, and the opposite side of the two retractable columns is fixedly connected to the left and right inner walls of the fixed chamber.

[0012] As a further description of the above technical solution: the external fixed connection of the plurality of fixing plates one is to the inner wall of the left and right ends of the pipe, and the external sliding connection of the plurality of fixing plates one is to the outer inner wall of the two large discs.

[0013] As a further description of the above technical solution: the external sliding connection of the plurality of fixed plates II is to the external inner wall of the two medium-sized discs, and the external sliding connection of the plurality of fixed plates III is to the inner wall of the adjacent side of the two connecting columns.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the limiting strip drives the limiting block to move, causing the limiting block to disengage from the inner wall of the shrinking rod and release the shrinking rod; the shrinking rod slides in the groove, causing the fixed chamber and the connecting chamber to separate, thereby realizing the disassembly and replacement of the heating half-ring plate, thus achieving the effect of convenient replacement of the heating half-ring plate, reducing equipment maintenance time and improving production efficiency.

[0016] 2. In this utility model, the push rod drives the connecting shaft to move, which in turn drives the connecting column to move the large and medium-sized discs. This drives the telescopic columns one, two, and three to move the fixed plates one, two, and three to extend and retract, respectively. The fixed plates one, two, and three slide along the inner walls of the corresponding discs and connecting columns, fitting against the inner walls of pipes of different sizes to achieve fixation. This achieves a stable fixing effect for pipes of different sizes and improves the equipment's adaptability to pipe specifications. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a synchronous curing and heating device for double-layer coated steel pipes proposed in this utility model;

[0018] Figure 2This is a schematic diagram of the slide chamber of a synchronous curing and heating device for double-coated steel pipes proposed in this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing block of the synchronous curing and heating device for double-layer coated steel pipes proposed in this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0022] Legend:

[0023] 1. Outer shell; 2. Connecting mechanism; 21. Slide chamber; 22. Moving plate; 23. Retracting rod; 24. Fixed chamber; 25. Connecting chamber; 26. Retracting column one; 27. Limiting strip; 28. Limiting block; 29. ​​Limiting assembly; 291. Push block; 292. Connecting block; 293. Rotating shaft; 294. Retracting column two; 295. Moving strip; 296. Control strip; 297. Spring; 298. Heating semi-ring plate; 299. Guide strip; 3. Fixing mechanism; 31. Fixing block; 32. Connecting shaft; 33. Push rod; 34. Telescopic rod; 35. Connecting column; 36. Large plate; 37. Medium plate; 38. Telescopic column one; 39. Fixed plate one; 301. Telescopic column two; 302. Fixed plate two; 303. Telescopic column three; 304. Fixed plate three; 4. Support; 5. Conveyor belt; 6. Pipeline. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 3 This utility model provides an embodiment of a synchronous curing and heating device for double-layer coated steel pipes, comprising a shell 1, with a connecting mechanism 2 fixedly connected to the inner wall of the shell 1. The connecting mechanism 2 is the core structure for installing, adjusting, and replacing the heating components. A fixing mechanism 3 is fixedly connected to the top of the shell 1, and the fixing mechanism 3, through its rigid connection with the top of the shell 1, positions and clamps the pipe 6. A bracket 4 is fixedly connected to the bottom of the shell 1, and the bracket 4 serves as the load-bearing structure of the device, evenly distributing the weight of the shell 1 and all internal mechanisms to the ground.

[0026] A conveyor belt 5 is rotatably connected to the inner wall of the top of the support 4. The conveyor belt 5 achieves cyclic movement through its rotatable connection with the inner wall of the top of the support 4. The rotational power is provided by an external motor, which can drive the pipe 6 to pass through the heating area at a uniform speed along a preset path. The pipe 6 is externally fixedly connected to the fixing mechanism 3. The pipe 6, as the processing object, is locked in position through its fixed connection with the fixing mechanism 3 and enters the heating area under the drive of the conveyor belt 5. The connecting mechanism 2 includes two slides 21. The slides 21 provide guidance for the horizontal movement of the moving plate 22, ensuring that the moving plate 22 moves in a straight line without deviation. The opposite sides of the two slides 21 are fixedly connected to the front and rear inner walls of the outer shell 1 to ensure the synchronous movement of the moving plate 22 within the two slides 21, laying the foundation for the subsequent symmetrical adjustment of the heating semi-ring plate 298.

[0027] Multiple movable plates 22 are slidably connected to the inner walls of both chute 21. These movable plates 22 can slide freely along the inner walls of the chute 21, and the sliding connection structure facilitates quick adjustment according to the pipe 6 specifications. A retraction rod 23 is fixedly connected to adjacent sides of each of the multiple movable plates 22. When the heating half-ring plate 298 needs to be replaced, the retraction rod 23 retracts, separating the fixed chamber 24 from the connecting chamber 25. This fixed connection ensures stable force transmission. A fixed chamber 24 is fixedly connected to adjacent sides of each of the multiple retraction rods 23. The fixed chamber 24 serves as the mounting carrier for the heating half-ring plate 298, and its position is adjusted according to the retraction rod 23 through its fixed connection. Connecting chambers 25 are fixedly connected to the inner walls of each of the multiple fixed chambers 24. The fixed connection between the connecting chamber 25 and the fixed chamber 24 forms a nested structure, enhancing the overall structural rigidity. The limiting strip 27 and limiting block 28 on the inner wall can cooperate with the retraction rod 23 to achieve locking, ensuring the stable position of the fixed chamber 24 during heating.

[0028] Two limiting strips 27 are fixedly connected to the inner walls of the opposite sides of the multiple connecting compartments 25. Their fixed connection to the inner walls of the connecting compartments 25 ensures their position is fixed. When force is applied, they can drive the limiting blocks 28 to move, thereby controlling the locking and releasing of the retractable rod 23. The symmetrical arrangement of the two limiting strips 27 ensures force balance. Two limiting blocks 28 are fixedly connected to the opposite sides of the two limiting strips 27. When the limiting strips 27 drive the limiting blocks 28 out of the slot, the retractable rod 23 can extend and retract freely. The rigid structure of the limiting blocks 28 ensures stability in the locked state and prevents accidental loosening. A limiting assembly 29 is fixedly connected to the adjacent sides of the two limiting strips 27. The limiting strips 27 can be moved by operating the external structure, thereby locking and releasing the limiting blocks 28, providing an operating interface for convenient replacement of the heating semi-ring plate 298.

[0029] Reference Figures 3 to 5The fixing mechanism 3 includes two fixing blocks 31. The fixing blocks 31 serve as the basic support components of the entire fixing mechanism 3, with their bottom ends rigidly connected to the top of the outer casing 1 via bolts or other fasteners, providing a stable load-bearing foundation for the installation and movement of subsequent components. The bottom ends of the two fixing blocks 31 are fixedly connected to the top of the outer casing 1, providing a reliable structural support for the fixing of the pipe 6. A connecting shaft 32 is rotatably connected inside the two fixing blocks 31. The connecting shaft 32 transmits external operating force to subsequent components and also serves as the rotation fulcrum of the push rod 33, allowing the push rod 33 to be angled around the fixing block 31. Push rods 33 are fixedly connected to the opposite sides of the two connecting shafts 32. Moving the push rods 33 can drive the connecting shafts 32 to rotate, thereby driving the linkage action of the entire fixing mechanism 3.

[0030] Telescopic rods 34 are fixedly connected to the far sides of the two push rods 33. The connection point between the telescopic rods 34 and the push rods 33 is a movable hinge point, which can convert the rotational motion of the push rods 33 into its own linear telescopic motion, thereby adapting to the fixing requirements of pipes 6 of different sizes and enhancing the flexibility of the mechanism. Connecting columns 35 are fixedly connected to the bottom ends of the near sides of the two telescopic rods 34. The connecting columns 35 are fixed to the bottom ends of the telescopic rods 34 as intermediate transmission components, which can transmit the telescopic force of the telescopic rods 34 to components such as the large plate 36 and the medium plate 37. Large plates 36 are fixedly connected to the outside of the far sides of the two connecting columns 35, mainly for adapting to the end fixing of large-size pipes 6, expanding the applicability of the fixing mechanism 3.

[0031] Both connecting posts 35 are fixedly connected to a medium-sized disc 37, located in the middle of the connecting post 35, with a diameter smaller than that of the large disc 36. Both large discs 36 are fixedly connected to multiple telescopic posts 38, evenly distributed around the outer periphery of the large discs 36. One end of each post is fixed to the large disc 36, and the other end is connected to a fixing plate 39. These posts automatically adjust their expansion and contraction according to the contour of the inner wall of the pipe 6, ensuring a tight fit between the fixing plate 39 and the inner wall of the pipe 6. Fixing plates 39 are fixedly connected to the opposite sides of the multiple telescopic posts 38. These fixing plates 39 have an arc-shaped structure, adapted to the curvature of the inner wall of the pipe 6, and, under the thrust of the telescopic posts 38, firmly press against the inner wall of the end of the pipe 6, achieving rigid fixation of the end of the pipe 6.

[0032] Multiple telescopic columns 301 are fixedly connected to the exterior of both medium-sized discs 37. The structure of the telescopic columns 301 is similar to that of the telescopic columns 38, and they are evenly distributed around the outer perimeter of the medium-sized discs 37. A fixing plate 302 is fixedly connected to the far side of each of the telescopic columns 301. The fixing plate 302 is also an arc-shaped structure. Multiple telescopic columns 303 are fixedly connected to the exterior of both connecting columns 35 on their near sides. A fixing plate 304 is fixedly connected to the far side of each of the telescopic columns 303. The fixing plate 304 is a small arc-shaped plate that can retract inward or extend outward under the drive of the telescopic columns 303, adapting to the internal fixing requirements of pipes 6 of different diameters.

[0033] Reference Figures 1 to 3 The limiting component 29 includes multiple push blocks 291, which act as triggering components of the limiting component 29, pushing the limiting strip 27 to move through external force. The multiple push blocks 291 are externally fixedly connected to the multiple limiting strips 27, ensuring that the movement of the push blocks 291 is directly transmitted to the limiting strips 27, guaranteeing effective force transmission. Each push block 291 has a connecting block 292 fixedly connected to its top end, acting as an intermediate connector to link the push blocks 291 with the rotating shaft 293 and the retraction column 294, allowing the movement of the push blocks 291 to drive the other components in a coordinated manner through the connecting blocks 292. Each connecting block 292 has a rotating shaft 293 rotatably connected to its inner top end, providing a rotational fulcrum for the moving strip 295, allowing the moving strip 295 to rotate flexibly around the rotating shaft 293, thus converting the linear motion of the connecting blocks 292 into the rotational motion of the moving strip 295.

[0034] Each of the multiple connecting blocks 292 has a retractable post 294 fixedly connected to its top. When the connecting block 292 moves with the push block 291, the retractable post 294 can absorb part of the force through extension and retraction, buffering the impact of movement. At the same time, it provides a restoring force when there is no external force, allowing the connecting block 292 to return to its initial position. Each of the multiple rotating shafts 293 has a movable strip 295 fixedly connected to its exterior. The movable strip 295 can be adjusted in angle by rotating the rotating shaft 293. Each of the multiple movable strips 295 has a control strip 296 rotatably connected to its opposite side. Each of the two limiting strips 27 has a retractable post 26 fixedly connected to its opposite side. When the limiting strip 27 is subjected to force and moves, the retractable post 26 can adaptively extend and retract, ensuring that the limiting strip 27 moves stably in a preset direction.

[0035] Multiple contraction columns 26 are each fitted with a spring 297. When the external force disappears, the elastic force of the spring 297 pushes the contraction column 26 back to its original position, thereby driving the limit bar 27 back to its initial limit position, realizing an automatic reset function and reducing manual operation steps. Guide bars 299 are fixedly connected to the interior of adjacent sides of multiple limit bars 27. The guide bars 299 are embedded inside the limit bars 27, providing guidance for the movement of the limit bars 27 and ensuring that the limit bars 27 slide smoothly along a straight line, avoiding deviation that affects the limit accuracy. Multiple fixed chambers 24 are fixedly connected to adjacent sides of heating semi-ring plates 298. The heating semi-ring plates 298 are components that directly heat the coating of the pipe 6, and can evenly transfer heat. The fixed chambers 24 provide fixation and protection for them, ensuring structural stability during the heating process.

[0036] Each of the multiple connecting compartments 25 has a sliding groove 21 on its upper and lower sides. The sliding groove 21 provides a sliding track for the guide bar 299, ensuring smooth and unobstructed sliding of the guide bar 299, while also restricting the direction of movement of the guide bar 299. The upper and lower ends of the multiple guide bars 299 are slidably connected to the inner walls of the upper and lower ends of the connecting compartments 25. This sliding connection allows the guide bar 299 to move freely along the sliding groove 21 of the connecting compartment 25, thereby driving the limiting bar 27 to move synchronously, realizing the adjustment of the relative position of the limiting bar 27 and the connecting compartment 25. The top ends of the multiple shrinking columns 294 are fixedly connected to the inner walls of the top ends of the multiple connecting compartments 25. By fixing the shrinking columns 294 to the connecting compartments 25, the movement of the connecting block 292 is based on the connecting compartment 25 as a fixed reference, ensuring the stability of the extension and retraction direction of the shrinking columns 294.

[0037] Multiple control bars 296 are fixedly connected to the outer bottom ends of multiple fixed compartments 24 on opposite sides. The control bars 296 transmit the movement of the moving bars 295 to the fixed compartments 24, allowing the fixed compartments 24 to adjust their position according to the movement of the control bars 296, thus separating or engaging with the connecting compartment 25. Multiple limiting blocks 28 are fixedly connected to the inner walls of multiple retractable rods 23 on adjacent sides. When the limiting bars 27 move, the limiting blocks 28 can engage or disengage from the slots of the retractable rods 23, locking or unlocking the retractable rods 23 with the connecting compartment 25. The fixed connections between the limiting bars 27 and the retractable rods 23 form a linked system; the movement of the limiting bars 27 directly drives the retractable rods 23 to move synchronously.

[0038] The two contraction columns 26 are fixedly connected to the left and right inner walls of the fixed chamber 24 on opposite sides. By being fixed to the fixed chamber 24, the contraction columns 26 provide a stable expansion and contraction base for the movement of the limit strip 27, with the fixed chamber 24 serving as a support point. Multiple fixing plates 39 are externally fixedly connected to the inner walls of the left and right ends of the pipe 6. By making fixed contact with the inner walls of the pipe 6, the fixing plates 39 radially constrain both ends of the pipe 6, preventing axial displacement of the pipe 6 during the heating process.

[0039] Multiple fixing plates 39 are externally slidably connected to the inner walls of two large discs 36. This sliding connection allows the fixing plates 39 to flexibly extend and retract along the inner walls of the large discs 36, adjusting the extension length according to the inner diameter of the pipe 6. Multiple fixing plates 302 are externally slidably connected to the inner walls of two medium discs 37. The medium discs 37 provide support and sliding tracks for the fixing plates 302. Multiple fixing plates 304 are externally slidably connected to the inner walls of two adjacent connecting columns 35. The connecting columns 35 provide an installation base for the fixing plates 304, allowing them to fix the smaller pipe 6.

[0040] Working principle: When the heating half-ring plate 298 needs to be replaced, pull the control bar 296. The control bar 296 drives the connecting block 292 to rise through the moving bar 295. When the connecting block 292 rises, it drives the push block 291 to move. Pulling the push block 291 releases the limiting bar 27, which slides along the inner wall of the connecting chamber 25 under the guidance of the guide bar 299. The limiting bar 27 drives the limiting block 28 to disengage from the fixed position on the inner wall of the side near the shrinking rod 23. At the same time, the limiting bar 27 pulls the shrinking column 26 to compress its external spring 297. As the limiting block 28 releases the limiting position of the shrinking rod 23, the shrinking rod 23 slides with the moving plate 22 in the slide groove 21, thereby driving the fixed chamber 24 to separate from the connecting chamber 25. Finally, the heating half-ring plate 298 can be easily disassembled and replaced, thus achieving the effect of efficient replacement of the heating half-ring plate 298 without complicated tools, greatly shortening equipment maintenance time and ensuring production continuity.

[0041] By rotating the push rod 33, the connecting shaft 32 is driven to rotate inside the fixed block 31. When the push rod 33 rotates, it drives the telescopic rod 34 to extend and retract. The telescopic rod 34 drives the connecting column 35 to move. The connecting column 35 drives the large plate 36 and the medium plate 37 to move synchronously. When the large plate 36 moves, it drives the first telescopic column 38 to extend and retract. The first telescopic column 38 pushes the first fixed plate 39 to slide along the outer inner wall of the large plate 36, so that the first fixed plate 39 fits against the inner wall of the left and right ends of the pipe 6. At the same time, the second telescopic column 301 of the medium plate 37 and the third telescopic column 303 driven by the connecting column 35 fix the pipes 6 of different sizes, thereby achieving a stable fixing effect for pipes 6 of different specifications and improving the adaptability of the equipment to the processing of diverse pipes 6.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simultaneous curing and heating device for a dual layer coated steel pipe comprising an outer shell (1) characterised in that: The inner wall of the outer shell (1) is fixedly connected to a connecting mechanism (2), the top of the outer shell (1) is fixedly connected to a fixing mechanism (3), the bottom of the outer shell (1) is fixedly connected to a bracket (4), the top inner wall of the bracket (4) is rotatably connected to a conveyor belt (5), and the outside of the fixing mechanism (3) is fixedly connected to a pipe (6). The connecting mechanism (2) includes two slides (21). The opposite sides of the two slides (21) are fixedly connected to the inner walls of the front and rear sides of the outer shell (1). Multiple movable plates (22) are slidably connected to the inner walls of the two slides (21). A retractable rod (23) is fixedly connected to the adjacent side of the multiple movable plates (22). A fixed chamber (24) is fixedly connected to the adjacent side of the multiple retractable rods (23). A connecting chamber (25) is fixedly connected to the inner wall of the multiple fixed chambers (24). Two limiting strips (27) are fixedly connected to the inner wall of the opposite side of the multiple connecting chambers (25). Two limiting blocks (28) are fixedly connected to the opposite side of the two limiting strips (27). A limiting component (29) is fixedly connected to the adjacent side of the two limiting strips (27).

2. A simultaneous curing and heating device for a dual layer coated steel pipe according to claim 1, characterized in that: The fixing mechanism (3) includes two fixing blocks (31). The bottom ends of the two fixing blocks (31) are fixedly connected to the top of the outer shell (1). The two fixing blocks (31) are rotatably connected to a connecting shaft (32). Push rods (33) are fixedly connected to the opposite sides of the two connecting shafts (32). Telescopic rods (34) are fixedly connected to the opposite sides of the two push rods (33). Connecting columns (35) are fixedly connected to the bottom ends of the adjacent sides of the two telescopic rods (34). Large discs (36) are fixedly connected to the outside of the opposite sides of the two connecting columns (35). Each of the two large plates (36) is fixedly connected to a medium-sized plate (37). Multiple telescopic columns one (38) are fixedly connected to the outside of each of the two large plates (36). A fixing plate one (39) is fixedly connected to the far side of each of the multiple telescopic columns one (38). Multiple telescopic columns two (301) are fixedly connected to the outside of each of the two medium-sized plates (37). A fixing plate two (302) is fixedly connected to the far side of each of the multiple telescopic columns two (301). Multiple telescopic columns three (303) are fixedly connected to the outside of each of the two connecting columns (35) on the near side. A fixing plate three (304) is fixedly connected to the far side of each of the multiple telescopic columns three (303).

3. A simultaneous curing and heating device for a dual coated steel pipe according to claim 1, characterized in that: The limiting component (29) includes multiple push blocks (291), the external parts of which are fixedly connected to the external parts of the multiple limiting strips (27). A connecting block (292) is fixedly connected to the top of each push block (291). A rotating shaft (293) is rotatably connected to the inner wall of the top of each connecting block (292). A second contraction column (294) is fixedly connected to the top of each connecting block (292). The external parts of each rotating shaft (293) are fixedly connected to... A movable bar (295) is connected to the movable bar (295), and a control bar (296) is rotatably connected to the opposite side of each of the movable bars (295). A retraction column (26) is fixedly connected to the opposite side of each of the two limiting bars (27). A spring (297) is sleeved on the outside of each of the retraction columns (26). A guide bar (299) is fixedly connected to the inside of the adjacent side of each of the limiting bars (27). A heating half-ring plate (298) is fixedly connected to the adjacent side of each of the fixed chambers (24).

4. A simultaneous curing and heating device for a dual layer coated steel pipe according to claim 3, characterized in that: The upper and lower sides of the multiple connecting compartments (25) are provided with sliding grooves, and the upper and lower ends of the multiple guide bars (299) are slidably connected to the inner walls of the upper and lower ends of the connecting compartments (25).

5. A simultaneous curing and heating device for a dual coated steel pipe according to claim 3, characterized in that: The top ends of the multiple shrinking columns (294) are fixedly connected to the inner wall of the top of the multiple connecting chambers (25), and the bottom ends of the multiple control bars (296) are fixedly connected to the top of the opposite side of the multiple fixed chambers (24).

6. A simultaneous curing and heating device for a dual layer coated steel pipe according to claim 3, characterized in that: The external of the plurality of limiting blocks (28) is fixedly connected to the inner wall of the plurality of retractable rods (23) on the same side, the external of the plurality of limiting strips (27) is fixedly connected to the inner wall of the plurality of retractable rods (23) on the same side, and the external of the two retractable columns (26) is fixedly connected to the inner walls of the left and right sides of the fixed chamber (24).

7. A simultaneous curing and heating device for a dual coated steel pipe according to claim 2, characterized in that: The external fixed connection of the plurality of fixed plates (39) is fixed to the inner wall of the left and right ends of the pipe (6), and the external sliding connection of the plurality of fixed plates (39) is to the inner wall of the two large discs (36).

8. A simultaneous curing and heating device for a dual layer coated steel pipe according to claim 2, characterized in that: Multiple fixing plates two (302) are externally slidably connected to the outer inner walls of the two medium-sized discs (37), and multiple fixing plates three (304) are externally slidably connected to the inner walls of the two connecting columns (35) on adjacent sides.

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