A steel pipe jointing apparatus

Abstract

A kind of steel pipe jointing equipment, steel pipe jointing equipment, including base and vertical plate, the left and right sides of the upper end of the base are both fixedly connected with vertical plate, the upper end of the vertical plate is equipped with steel pipe sectional jointing structure, the middle rear side of the base is fixedly connected with bent plate, the outer wall of the bent plate is fixedly connected with hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with straight plate, the upper end middle part of the base is connected with vertical block by bolt, the outer wall of the vertical block and straight plate is equipped with steel pipe jointing structure. Through the cooperation of steel pipe sectional jointing structure and vertical plate, staff can easily move the unjointed part of long steel pipe to the lower die and upper die, repeat the jointing action driven by the above-mentioned hydraulic cylinder, the next section of long steel pipe can be jointed, through such work flow, the equipment realizes no need to frequently start and stop during long steel pipe jointing process, effectively guarantees the continuity of jointing operation.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe technology, and in particular to a steel pipe jointing device. Background Technology

[0002] Steel pipe sealing equipment is a device used to press and seal rolled or bent steel pipes to facilitate subsequent welding. It is widely used in industries such as petroleum, power, shipbuilding, and chemical engineering.

[0003] For example, a steel pipe jointing device with authorization announcement number "CN212496275U" can facilitate the alignment of large steel pipes during the jointing and welding process, effectively saving manpower and improving alignment accuracy. Traditional steel pipe jointing devices can only perform partial pressing on short pipes at a time. When processing long steel pipes, it is necessary to frequently start and stop the equipment, manually disassemble the positioning components, adjust the position of the steel pipe, and then re-fix it before pressing the next section. This process is cumbersome, not only interrupting the continuity of the jointing but also easily causing joint positioning deviations due to multiple adjustments. Summary of the Invention

[0004] This invention aims to solve the problems existing in the prior art by providing a steel pipe seam closing device that eliminates the need for frequent start-stop operations when seaming long steel pipes.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This steel pipe jointing device includes a base and a vertical plate. The upper left and right sides of the base are fixedly connected to the vertical plate. The upper end of the vertical plate is provided with a steel pipe jointing structure. The middle rear side of the base is fixedly connected to the bending plate. The outer wall of the bending plate is fixedly connected to the hydraulic cylinder. The output end of the hydraulic cylinder is fixedly connected to the straight plate. The upper middle part of the base is threadedly connected to the vertical block by bolts. The outer walls of the vertical block and the straight plate are provided with steel pipe jointing structures.

[0006] This feature allows the vertical blocks to be bolted to the base for easy replacement.

[0007] To further improve the design, the segmented joint structure of the steel pipe includes a box body. The lower end of the box body is fixedly connected to a vertical plate. The inner wall of the box body is rotatably connected to multiple round rods through bearings. The outer wall of the round rods is fixedly connected to a round roller.

[0008] This setting aligns the top of the roller with the lowest point of the lower die, allowing the steel pipe to be placed on the roller and fed section by section by hand.

[0009] To further improve the design, sliding rods are fixedly connected to the four corners of the upper end of the straight plate.

[0010] Further improvements include a sliding connection between the outer wall of the slide rod and the cylinder.

[0011] This feature allows the slider to limit and guide the straight plate.

[0012] Further improvements include a fixed connection between the upper end of the cylinder and the bending plate.

[0013] Further improvements are made to the steel pipe joint structure, which includes a first block and a second block. The first block is connected to the straight plate by bolts and threads. The inner wall of the first block is machined with an upper mold. The upper end of the vertical block is fixedly connected to the second block. The inner wall of the second block is machined with a lower mold.

[0014] This setting allows the steel pipe to be joined together by pressing it with an upper die.

[0015] The beneficial effects of this utility model are as follows: Through the combination of the segmented steel pipe joining structure and the vertical plate, after the joining of the previous segment is completed, there is no need to shut down the equipment. Simply move the hydraulic cylinder upwards to move the upper mold away from the steel pipe. At this time, the worker manually pushes the long steel pipe. Because the long steel pipe is mounted on a rotatable roller, the roller is subjected to friction from the steel pipe during the pushing process, causing the fixedly connected rod to rotate within the box via bearings. The rotation of the roller significantly reduces the resistance to the movement of the steel pipe, allowing the worker to easily move the unjointed portion of the long steel pipe between the lower and upper molds. By repeating the joining action driven by the hydraulic cylinder, the next segment of the long steel pipe can be joined. Through this workflow, the equipment eliminates the need for frequent start-ups and shutdowns during the joining of long steel pipes, effectively ensuring the continuity of the joining operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A front sectional view;

[0018] Figure 3 for Figure 2 Right sectional view;

[0019] Figure 4 This is a 3D view of the first block, the second block, the upper mold, and the lower mold;

[0020] Figure 5 This is a top sectional view of the enclosure;

[0021] Figure 6 This is a front sectional view of the cylinder.

[0022] Explanation of reference numerals in the attached drawings: 1. Base, 2. Vertical plate, 3. Steel pipe segmental joint structure, 301. Box body, 302. Round rod, 303. Round roller, 4. Bending plate, 5. Hydraulic cylinder, 6. Straight plate, 7. Steel pipe joint structure, 701. First block, 702. Upper mold, 703. Second block, 704. Lower mold, 8. Cylinder, 9. Sliding rod, 10. Vertical block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] See attached document Figure 1-6 In this embodiment, a steel pipe jointing device includes a base 1 and a vertical plate 2. Vertical plates 2 are fixedly connected to the left and right sides of the upper end of the base 1, providing support for the vertical plates 2. A steel pipe segmental jointing structure 3 is provided at the upper end of the vertical plate 2, providing support for the steel pipe segmental jointing structure 3. A bending plate 4 is fixedly connected to the rear side of the middle of the base 1, providing support for the bending plate 4. A hydraulic cylinder 5 is fixedly connected to the outer wall of the bending plate 4. The hydraulic cylinder 5 is selected to have a self-locking function. The output end is fixedly connected to the straight plate 6. The upper middle part of the base 1 is threadedly connected to the vertical block 10 by bolts. The vertical block 10 is installed on the base 1 by bolts. The vertical block 10 and the outer wall of the straight plate 6 are provided with a steel pipe joint structure 7. The four corners of the upper end of the straight plate 6 are fixedly connected with sliding rods 9. The outer wall of the sliding rod 9 is slidably connected to the cylinder 8. The sliding rod 9 slides inside the cylinder 8. The sliding rod 9 plays a guiding and limiting role for the straight plate 6. The upper end of the cylinder 8 is fixedly connected to the bent plate 4. The bent plate 4 provides support for the cylinder 8.

[0025] See attached document Figure 1 , Figure 2 and Figure 5 The steel pipe segmental joint structure 3 includes a box body 301. The lower end of the box body 301 is fixedly connected to the vertical plate 2. The vertical plate 2 provides support for the box body 301. The inner wall of the box body 301 is rotatably connected to multiple round rods 302 through bearings. The round rods 302 rotate inside the box body 301 through bearings. The outer wall of the round rods 302 is fixedly connected to a round roller 303. The rotation of the round roller 303 drives the round rods 302 to rotate.

[0026] After the first section is joined, there is no need to shut down the equipment. Simply move the hydraulic cylinder 5 upward to move the upper mold 702 away from the steel pipe. At this time, the operator manually pushes the long steel pipe. Because the long steel pipe is mounted on the rotatable roller 303, the roller 303 is subjected to the friction of the steel pipe during the pushing process. This causes the roller 302, which is fixedly connected to it, to rotate on the inner wall of the housing 301 through the bearing. The rotation of the roller 303 greatly reduces the resistance to the movement of the steel pipe, allowing the operator to easily move the unjointed part of the long steel pipe between the lower mold 704 and the upper mold 702. Repeat the joining action driven by the hydraulic cylinder 5 to join the next section of the long steel pipe. Through this workflow, the equipment can achieve the joining process of long steel pipe without frequent start-stop, effectively ensuring the continuity of the joining operation.

[0027] See attached document Figure 1-4 The steel pipe joint structure 7 includes a first block 701 and a second block 703. The first block 701 is threadedly connected to the straight plate 6 by bolts. The first block 701 is installed on the straight plate 6 by bolts. The inner wall of the first block 701 is machined with an upper mold 702. The upper end of the vertical block 10 is fixedly connected to the second block 703. The inner wall of the second block 703 is machined with a lower mold 704. The lowest point of the lower mold 704 is flush with the highest point of the circular roller 303.

[0028] Disassemble the bolts connecting the first block 701 to the straight plate 6 and the second block 703 to the vertical block 10 respectively. Replace the first block 701 with the corresponding upper mold 702 and the second block 703 with the corresponding lower mold 704, and then re-secure them with bolts to ensure that the joint mold matches the steel pipe. The output end of the hydraulic cylinder 5 pushes the straight plate 6 to move. At this time, the sliding rods 9 fixed at the four corners of the upper end of the straight plate 6 will slide along the inner wall of the cylinder 8 fixedly connected to the bending plate 4. The cooperation between the sliding rods 9 and the cylinder 8 is the movement of the straight plate 6. The movement acts as a limit guide to prevent the straight plate 6 from tilting during movement and ensure stable transmission of the joint pressure. As the straight plate 6 moves downward, the first block 701, which is connected to the straight plate 6 by bolts, moves downward synchronously. The upper mold 702, which is machined on the inner wall of the first block 701, gradually approaches the lower mold 704. When the lower mold 704 contacts the upper mold 702 and applies pressure to the long steel pipe, the specific shapes of the upper mold 702 and the lower mold 704 are used to press the joint of the steel pipe, thus completing the jointing operation of the current section of the long steel pipe.

[0029] Working principle:

[0030] When using steel pipe jointing equipment:

[0031] Preparation phase:

[0032] According to the specifications of the steel pipe to be joined, select the upper mold 702 and lower mold 704 that meet the specifications. Remove the bolts connecting the first block 701 to the straight plate 6 and the second block 703 to the vertical block 10 respectively. Replace the first block 701 with the upper mold 702 with the corresponding specifications and the second block 703 with the lower mold 704 with the corresponding specifications. Then fix them with bolts again to ensure that the joining mold matches the steel pipe.

[0033] Once ready, the rolled or bent long steel pipe to be joined is placed on the lower mold 704. Since the top of the roller 303 in the steel pipe jointing structure 3 is flush with the lowest point of the lower mold 704 in the steel pipe jointing structure 7, the long steel pipe will be simultaneously supported on the roller 303 in the upper box 301 of the left and right vertical plates 2 and in the groove of the lower mold 704, thus achieving the initial support and positioning of the long steel pipe and preventing the steel pipe from shifting before joining.

[0034] Start hydraulic cylinder 5. The output end of hydraulic cylinder 5 pushes the straight plate 6 to move. At this time, the slide rods 9 fixed at the four corners of the upper end of the straight plate 6 will slide along the inner wall of the cylinder 8 fixedly connected to the bending plate 4. The cooperation between the slide rods 9 and the cylinder 8 plays a limiting and guiding role in the movement of the straight plate 6, preventing the straight plate 6 from tilting during the movement and ensuring stable transmission of the joint pressure. As the straight plate 6 moves down, the first block 701 connected to the straight plate 6 by bolts moves down synchronously. The upper mold 702 processed on the inner wall of the first block 701 gradually approaches the lower mold 704. When the lower mold 704 contacts the upper mold 702 and applies pressure to the long steel pipe, the specific shapes of the upper mold 702 and the lower mold 704 are used to press the joint of the steel pipe, completing the jointing operation of the current section of the long steel pipe.

[0035] After the first section is joined, there is no need to shut down the equipment. Simply move the hydraulic cylinder 5 upward to move the upper mold 702 away from the steel pipe. At this time, the operator manually pushes the long steel pipe. Because the long steel pipe is mounted on the rotatable roller 303, the roller 303 is subjected to the friction of the steel pipe during the pushing process. This causes the roller 302, which is fixedly connected to it, to rotate on the inner wall of the housing 301 through the bearing. The rotation of the roller 303 greatly reduces the resistance to the movement of the steel pipe, allowing the operator to easily move the unjointed part of the long steel pipe between the lower mold 704 and the upper mold 702. Repeat the joining action driven by the hydraulic cylinder 5 to join the next section of the long steel pipe. Through this workflow, the equipment can achieve the joining process of long steel pipe without frequent start-stop, effectively ensuring the continuity of the joining operation.

[0036] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A steel pipe jointing device, comprising a base (1) and vertical plates (2), wherein vertical plates (2) are fixedly connected to the left and right sides of the upper end of the base (1), characterized in that: The upper end of the vertical plate (2) is provided with a steel pipe segmental joint structure (3). The middle rear side of the base (1) is fixedly connected with a bent plate (4). The outer wall of the bent plate (4) is fixedly connected with a hydraulic cylinder (5). The output end of the hydraulic cylinder (5) is fixedly connected to the straight plate (6). The upper middle part of the base (1) is threadedly connected to the vertical block (10) by bolts. The outer wall of the vertical block (10) and the straight plate (6) is provided with a steel pipe joint structure (7).

2. The steel pipe jointing device according to claim 1, characterized in that: The steel pipe segmental joint structure (3) includes a box body (301), the lower end of which is fixedly connected to the vertical plate (2), the inner wall of which is rotatably connected to multiple round rods (302) through bearings, and the outer wall of which is fixedly connected to a round roller (303).

3. The steel pipe jointing device according to claim 1, characterized in that: Each of the four corners of the upper end of the straight plate (6) is fixedly connected with a sliding rod (9).

4. The steel pipe jointing device according to claim 3, characterized in that: The outer wall of the slide rod (9) is slidably connected to the cylinder (8).

5. The steel pipe jointing device according to claim 4, characterized in that: The upper end of the cylinder (8) is fixedly connected to the bent plate (4).

6. The steel pipe jointing device according to claim 1, characterized in that: The steel pipe joint structure (7) includes a first block (701) and a second block (703). The first block (701) is threadedly connected to the straight plate (6) by bolts. The inner wall of the first block (701) is machined with an upper mold (702). The upper end of the vertical block (10) is fixedly connected to the second block (703). The inner wall of the second block (703) is machined with a lower mold (704).

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