Expanding device for seamless steel pipe processing

Abstract

The utility model relates to metal material processing technical field discloses a kind of pipe expanding device for seamless steel pipe processing, including bottom plate, the top of bottom plate is fixedly connected with cushion block, the top of cushion block is fixedly connected with pipe expander, the outer wall of pipe expander is detachably connected with expansion head, the top of bottom plate is fixedly installed with positioning mechanism, the top of bottom plate is fixedly installed with upper unloading mechanism, the positioning mechanism includes hydraulic cylinder one, the bottom of hydraulic cylinder one is fixedly connected in the top of bottom plate, the drive end of hydraulic cylinder one is fixedly connected with fixed column.In the utility model, the pipe expanding device of equipment is increased to adapt to the butt joint fixing mechanism of multiple size steel pipes, can not need to frequently replace special fixture, greatly shorten the change type time, improve processing efficiency;While compatible different pipe diameter steel pipes, reduce cost;Also guarantee the stress uniformity when fixing different size steel pipes, avoid pipe expanding deviation due to unstable fixation.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing technology, and in particular to a pipe expansion device for processing seamless steel pipes. Background Technology

[0002] Seamless steel pipe processing expansion device is a special equipment used to expand, calibrate and shape the inner diameter of seamless steel pipes. Its core function is to use a hydraulic, mechanical or pneumatically driven expansion mechanism to subject the inner wall of the steel pipe to uniform external force under controllable pressure and speed, so as to achieve precise expansion of pipe diameter. At the same time, it corrects the roundness of the steel pipe, eliminates internal stress, improves the dimensional accuracy and mechanical properties of the pipe, and adapts to the pipeline connection and use requirements under different working conditions. The seamless steel pipe processing expansion device mainly includes a support frame, a clamping mechanism for fixing the steel pipe, a hydraulic or mechanical drive system, a tapered expansion head or expansion mandrel-type expansion actuator, and a control system for controlling pressure and speed. During operation, the clamping mechanism first fixes the steel pipe, and the drive system drives the expansion actuator to extend into the pipe. By applying uniform pressure, the actuator radially expands and squeezes the pipe wall, forcing the pipe diameter to expand to the target size, correcting the roundness, and eliminating internal stress. After completion, the actuator resets and the pipe is released.

[0003] In the existing technology, when expanding seamless steel pipes, it is usually difficult to adapt the equipment to steel pipes of different sizes when connecting and fixing them because different steel pipes have different radii. At the same time, it is difficult to ensure that the steel pipe is always aligned with the equipment when fixing it manually. Therefore, it is difficult to expand steel pipes of incompatible sizes. To solve the above problems, a pipe expanding device for processing seamless steel pipes is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pipe expanding device for seamless steel pipe processing, which aims to improve the problem that traditional steel pipe expanding machines in the prior art cannot adapt to steel pipes of various sizes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: To achieve the above objectives, the present invention adopts the following technical solution: A pipe expanding device for processing seamless steel pipes includes a base plate, a pad fixedly connected to the top of the base plate, a pipe expanding machine fixedly connected to the top of the pad, an expansion head detachably connected to the outer wall of the pipe expanding machine, a positioning mechanism fixedly installed on the top of the base plate, and an upper unloading mechanism fixedly installed on the top of the base plate. The positioning mechanism includes a hydraulic cylinder, the bottom of which is fixedly connected to the top of the base plate. A fixed column is fixedly connected to the drive end of the hydraulic cylinder. A positioning frame is fixedly connected to the outer wall of the fixed column. A motor is fixedly connected to the inner wall of the positioning frame. A positioning component is fixedly connected to the drive end of the motor. By adopting the above technical solution: the base plate serves as the foundational load-bearing structure of the device, providing a stable installation benchmark for all components; the adjustable height of the pads ensures the horizontal installation of the pipe expander, which provides power for the pipe expanding operation; the expansion head is detachable, facilitating the replacement of the appropriate model according to the steel pipe size; the positioning mechanism achieves precise positioning of the steel pipe, and the unloading mechanism replaces manual transfer of the steel pipe. In the positioning mechanism, hydraulic cylinder one provides linear movement power to the positioning component, with the bottom fixed to the base plate and the top kept stable; the fixed column connects the drive end of hydraulic cylinder one to the positioning frame, serving as a connection and force transmission function; the positioning frame provides an installation carrier for the motor, rotating disk, etc., the motor provides torque for the positioning component linkage, and the positioning component fixes the inner wall of the steel pipe through mechanical linkage.

[0006] As a further description of the above technical solution: The positioning component includes a rotating disk, the outer wall of which is rotatably connected to the inner wall of the positioning frame. Multiple rotating columns are rotatably connected to the outer wall of the rotating disk. Multiple connecting rods are fixedly connected to the outer walls of the multiple rotating columns. Multiple sliding rods are fixedly connected to the inner walls of the multiple connecting rods. Multiple fixing buckles are fixedly connected to the outer walls of the multiple sliding rods. Multiple sliding grooves are provided on the outer wall of the positioning frame. By adopting the above technical solution: In the positioning assembly, the rotating disk is the primary component for transmitting motor torque. Its outer wall is rotatably connected to the inner wall of the positioning frame, ensuring stability and no deviation during rotation. The rotation of the rotating disk can drive multiple rotating columns connected to the outer wall to move synchronously. The rotating columns pull the sliding rod to move through the fixed connecting rod. The sliding rod slides radially under the constraint of the sliding groove. The fixing buckle fixed on its outer wall moves with the sliding rod, realizing the locking or loosening of the inner wall of the steel pipe. The sliding groove opened on the outer wall of the positioning frame limits the sliding rod to move only radially, avoiding deviation.

[0007] As a further description of the above technical solution: The unloading mechanism includes a second hydraulic cylinder, which is fixedly connected to the bottom of the base plate. The driving end of the second hydraulic cylinder is fixedly connected to a lifting frame, and the top of the lifting frame is fixedly connected to multiple anti-slip buckles. The top of the base plate is fixedly connected to a third hydraulic cylinder, and the driving end of the third hydraulic cylinder is fixedly connected to an unloading assembly. By adopting the above technical solution: in the upper unloading mechanism, hydraulic cylinder two provides power for the lifting and lowering of the lifting frame, and fixing it to the bottom of the base plate can save the top installation space; the lifting frame is used to carry the steel pipe, and multiple anti-slip buckles fixed on its top can prevent the steel pipe from falling off during the lifting and lowering process; hydraulic cylinder three provides thrust to the unloading assembly, which is used to push out the expanded steel pipe.

[0008] As a further description of the above technical solution: The unloading assembly includes a connecting column, one end of which is fixedly connected to the drive end of the hydraulic cylinder three, and the other end of which is fixedly connected to a release frame. Two release heads are fixedly connected to the outer wall of the release frame. By adopting the above technical solution: inside the unloading assembly, the connecting column is responsible for transmitting the thrust of the hydraulic cylinder three, and one end is fixed to the driving end of the hydraulic cylinder three to ensure effective force transmission; the release frame is fixed to the other end of the connecting column to provide installation support for the release head; the two release heads are symmetrically arranged on the outer wall of the release frame, which can smoothly push the steel pipe and avoid the steel pipe tilting due to unilateral force.

[0009] As a further description of the above technical solution: The outer wall of the fixing buckle is slidably connected to the outer wall of the positioning frame, and the outer wall of the slide rod is slidably connected to the outer wall of the fixing buckle; By adopting the above technical solution: the outer wall of the fixing buckle is slidably connected to the outer wall of the positioning frame, ensuring that the fixing buckle fits the positioning frame when it moves; the outer wall of the slide rod is slidably connected to the outer wall of the fixing buckle, realizing the synchronous movement of the slide rod and the fixing buckle, ensuring that the fixing buckle can stably extend and retract with the slide rod.

[0010] As a further description of the above technical solution: The outer wall of the rotating column is rotatably connected to the inner wall of the positioning frame, and the outer wall of the connecting rod is rotatably connected to the inner wall of the positioning frame. By adopting the above technical solution: the outer wall of the rotating column is rotatably connected to the inner wall of the positioning frame, so that the rotating column is constrained by the positioning frame when rotating, thus avoiding swaying; the outer wall of the connecting rod is rotatably connected to the inner wall of the positioning frame, thus ensuring the stability of the movement trajectory of the connecting rod during traction.

[0011] As a further description of the above technical solution: The bottom of the release frame is slidably connected to the top of the base plate, and the bottoms of both release heads are slidably connected to the top of the base plate. By adopting the above technical solution: the bottom of the release frame is slidably connected to the top of the base plate, so that the release frame moves with the base plate as a guide to ensure linear movement; the bottom of both release heads is slidably connected to the top of the base plate, further improving the stability when the release heads are pushed.

[0012] As a further description of the above technical solution: The outer walls of both detachment heads are slidably connected to the outer wall of the lifting frame, and the outer wall of the lifting frame is detachably connected to the top of the base plate; By adopting the above technical solution: the outer walls of both release heads are slidably connected to the outer wall of the lifting frame, so that the release heads can fit against the lifting frame when pushing the steel pipe, and avoid the steel pipe from shifting; the outer wall of the lifting frame is detachably connected to the top of the base plate, which facilitates the maintenance or replacement of the lifting frame, and at the same time ensures that the lifting frame is stably fixed when not in operation.

[0013] This utility model has the following beneficial effects: 1. In this utility model, when it is necessary to expand a section of seamless steel pipe, the steel pipe is placed at a designated working height by the unloading mechanism. Then, the entire positioning assembly is inserted into the seamless steel pipe by the hydraulic cylinder. At the same time, the motor is started to rotate, which drives the rotating disk to rotate. The rotation of the rotating disk drives the rotating column to rotate, which in turn causes the connecting rod to move and the sliding rod to slide in the sliding groove. Finally, the fixing buckle fixed on the sliding rod is pushed outward to achieve precise positioning of the seamless steel pipe by locking it on the inner wall of the seamless steel pipe. This also enables the positioning of steel pipes of different sizes. Finally, the expansion of the seamless steel pipe is achieved under the action of the expansion machine and the expansion head. After the expansion is completed, the fixing buckle is retracted by the motor, and then the hydraulic cylinder retracts to complete the expansion operation.

[0014] 2. In this utility model, when it is necessary to expand a section of seamless steel pipe, the seamless steel pipe is placed on the lifting frame, and the anti-slip buckles on both sides prevent the seamless steel pipe from falling off. At this time, the second hydraulic cylinder is activated to raise the steel pipe for expansion. After the expansion is completed, the second hydraulic cylinder descends, and the third hydraulic cylinder is activated. The third hydraulic cylinder pushes the connecting column to move, and at the same time, the ventilation connecting column pushes the detachment frame to move towards the working side, so that the detachment head fixed on the detachment frame pushes the seamless steel pipe out from between the anti-slip buckles, thereby realizing automatic loading and unloading, reducing the burden on workers, and increasing operating efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a pipe expansion device for processing seamless steel pipes proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the pad block of the pipe expansion device for seamless steel pipe processing proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the anti-slip buckle of a pipe expansion device for seamless steel pipe processing proposed in this utility model.

[0016] Legend: 1. Base plate; 2. Pad block; 3. Pipe expander; 4. Expanding head; 5. Positioning mechanism; 51. Hydraulic cylinder one; 52. Fixed column; 53. Positioning frame; 54. Motor; 55. Positioning assembly; 551. Rotary disc; 552. Rotating column; 553. Connecting rod; 554. Sliding rod; 555. Slide groove; 556. Fixing buckle; 6. Loading and unloading mechanism; 61. Hydraulic cylinder two; 62. Lifting frame; 63. Anti-slip buckle; 64. Hydraulic cylinder three; 65. Unloading assembly; 651. Connecting column; 652. Release frame; 653. Release head. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1 to 3 This utility model provides an embodiment of a seamless steel pipe processing expansion device, which can realize automated expansion of steel pipes and reduce manual intervention. It includes a base plate 1, which provides a stable installation foundation for each component. A pad 2 is fixedly connected to the top of the base plate 1. The pad 2 supports and raises the expansion machine 3 to adapt to the height of other components. The expansion machine 3 is fixedly connected to the top of the pad 2. The expansion machine 3 is the core power source for expansion and can drive the expansion head 4 to work. The expansion head 4 is detachably connected to the outer wall of the expansion machine 3. The expansion head 4 directly applies expansion force. The detachable design facilitates the replacement and adaptation to different steel pipes. A positioning mechanism 5 is fixedly installed on the top of the base plate 1 to prevent the steel pipe from shifting during expansion to ensure accuracy. An upper unloading mechanism 6 is fixedly installed on the top of the base plate 1 to realize automatic loading and unloading and reduce manual labor intensity. The positioning mechanism 5 includes a hydraulic cylinder 51, which provides linear driving force for the insertion and withdrawal of the positioning component 55. The bottom of the hydraulic cylinder 51 is fixedly connected to the top of the base plate 1. The base plate 1 ensures stable power transmission. The driving end of the hydraulic cylinder 51 is fixedly connected to a fixing column 52. The fixing column 52 connects the hydraulic cylinder 51 and the positioning frame 53 and transmits power. The outer wall of the fixing column 52 is fixedly connected to the positioning frame 53. The positioning frame 53 provides mounting support for the motor 54 and the rotating disk 551. The inner wall of the positioning frame 53 is fixedly connected to the motor 54. The motor 54 provides rotational power for the rotating disk 551. The driving end of the motor 54 is fixedly connected to the positioning component 55. The positioning component 55 achieves the opening and closing of the fixing buckle 556 through mechanical transmission to complete the positioning. Reference Figure 2 and Figure 3The positioning component 55 includes a rotating disk 551, which transmits the torque of the motor 54 to the rotating column 552. The outer wall of the rotating disk 551 is rotatably connected to the inner wall of the positioning frame 53. The positioning frame 53 ensures rotational stability. Multiple rotating columns 552 are rotatably connected to the outer wall of the rotating disk 551. The rotating columns 552 rotate with the rotating disk 551, causing the connecting rods 553 to move. Multiple connecting rods 553 are fixedly connected to the outer walls of the multiple rotating columns 552. The connecting rods 553 convert rotation into sliding of the slide rods 554. Multiple slide rods 554 are fixedly connected to the inner walls of the multiple connecting rods 553. The slide rods 554 drive the fixing buckles 556 to move synchronously. Multiple fixing buckles 556 are fixedly connected to the outer walls of the multiple slide rods 554. The fixing buckles 556 open and fit against the inner wall of the steel pipe to achieve positioning and adapt to different pipe diameters. Multiple sliding grooves 555 are opened on the outer wall of the positioning frame 53. The sliding grooves 555 provide a sliding path for the slide rods 554 and restrict the direction. Reference Figure 1 , Figure 3 and Figure 4The unloading mechanism 6 includes a second hydraulic cylinder 61, which provides power for the lifting frame 62 to adjust the height of the steel pipe. The second hydraulic cylinder 61 is fixedly connected to the bottom of the base plate 1, and the base plate 1 ensures stable lifting. The lifting frame 62 is fixedly connected to the drive end of the second hydraulic cylinder 61. The lifting frame 62 carries the steel pipe and lifts it to the working height. Multiple anti-slip buckles 63 are fixedly connected to the top of the lifting frame 62 to prevent the steel pipe from falling off during lifting. A third hydraulic cylinder 64 is fixedly connected to the top of the base plate 1. Hydraulic cylinder 64 provides moving power to unloading assembly 65 to achieve automatic unloading. The drive end of hydraulic cylinder 64 is fixedly connected to unloading assembly 65. Unloading assembly 65 completes unloading by pushing. Unloading assembly 65 includes connecting column 651, which connects hydraulic cylinder 64 and release frame 652 and transmits power. One end of connecting column 651 is fixedly connected to the drive end of hydraulic cylinder 64 to ensure stable power transmission. The other end of connecting column 651 is fixedly connected to release frame 652, which is equipped with release head 65. 3. The outer wall of the release frame 652 is fixedly connected to two release heads 653. The release heads 653 directly push the steel pipe out from between the anti-slip buckles 63. The outer wall of the fixing buckle 556 is slidably connected to the outer wall of the positioning frame 53, ensuring that the fixing buckle 556 does not deviate during movement. The outer wall of the slide rod 554 is slidably connected to the outer wall of the fixing buckle 556, achieving synchronous movement between the two. The outer wall of the rotating column 552 is rotatably connected to the inner wall of the positioning frame 53, providing rotational support for the rotating column 552. The outer wall of the connecting rod 553 is rotatably connected to... The inner wall of the positioning frame 53 ensures the stable displacement of the connecting rod 553. The bottom of the release frame 652 is slidably connected to the top of the base plate 1, providing sliding support for the release frame 652 to ensure smooth unloading. The bottoms of the two release heads 653 are slidably connected to the top of the base plate 1 to ensure stable movement of the release heads 653. The outer walls of the two release heads 653 are slidably connected to the outer wall of the lifting frame 62, allowing the release heads 653 to push the pipe along the lifting frame 62. The outer wall of the lifting frame 62 is detachably connected to the top of the base plate 1 for easy maintenance and replacement.

[0019] Working principle: When it is necessary to expand a section of seamless steel pipe, the steel pipe is placed at the designated working height by the unloading mechanism 6. The positioning assembly 55 is inserted into the seamless steel pipe by the hydraulic cylinder 51. At the same time, the motor 54 is started to rotate, which drives the rotating disk 551 to rotate. The rotation of the rotating disk 551 drives the rotating column 552 to rotate, which in turn causes the connecting rod 553 to move and the sliding rod 554 to slide in the sliding groove 555. Finally, the fixing buckle 556 fixed on the sliding rod 554 is pushed outward to achieve precise positioning of the seamless steel pipe by locking it on the inner wall of the seamless steel pipe. This also enables the positioning of steel pipes of different sizes. Finally, under the action of the pipe expander 3 and the expansion head 4, the seamless steel pipe is expanded. After the expansion is completed, the fixing buckle 556 is retracted by the motor 54, and then the hydraulic cylinder 51 is retracted to complete the expansion operation.

[0020] When it is necessary to expand a section of seamless steel pipe, the seamless steel pipe is placed on the lifting frame 62, and the anti-slip buckles 63 on both sides prevent the seamless steel pipe from falling off. At this time, the second hydraulic cylinder 61 is activated to raise the steel pipe for expansion. After the expansion is completed, the second hydraulic cylinder 61 is lowered. At this time, the third hydraulic cylinder 64 is activated, which pushes the connecting column 651 to move. At the same time, the ventilation connecting column 651 pushes the detachment frame to move towards the working side, so that the detachment head 653 fixed on the detachment frame pushes the seamless steel pipe out from between the anti-slip buckles 63, thereby realizing automatic loading and unloading, reducing the burden on workers and increasing operating efficiency.

[0021] 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 pipe expansion device for processing seamless steel pipes, comprising a base plate (1), characterized in that: A pad (2) is fixedly connected to the top of the base plate (1), a pipe expander (3) is fixedly connected to the top of the pad (2), an expansion head (4) is detachably connected to the outer wall of the pipe expander (3), a positioning mechanism (5) is fixedly installed on the top of the base plate (1), and an upper unloading mechanism (6) is fixedly installed on the top of the base plate (1). The positioning mechanism (5) includes a hydraulic cylinder (51), the bottom of which is fixedly connected to the top of the base plate (1), a fixed column (52) is fixedly connected to the driving end of the hydraulic cylinder (51), a positioning frame (53) is fixedly connected to the outer wall of the fixed column (52), a motor (54) is fixedly connected to the inner wall of the positioning frame (53), and a positioning component (55) is fixedly connected to the driving end of the motor (54).

2. The seamless steel pipe processing expansion device according to claim 1, characterized in that: The positioning component (55) includes a rotating disk (551), the outer wall of which is rotatably connected to the inner wall of the positioning frame (53). The outer wall of the rotating disk (551) is rotatably connected to a plurality of rotating columns (552). The outer walls of the plurality of rotating columns (552) are fixedly connected to a plurality of connecting rods (553). The inner walls of the plurality of connecting rods (553) are fixedly connected to a plurality of sliding rods (554). The outer walls of the plurality of sliding rods (554) are fixedly connected to a plurality of fixing buckles (556). The outer wall of the positioning frame (53) is provided with a plurality of sliding grooves (555).

3. The seamless steel pipe processing expansion device according to claim 1, characterized in that: The unloading mechanism (6) includes a second hydraulic cylinder (61), which is fixedly connected to the bottom of the base plate (1). The driving end of the second hydraulic cylinder (61) is fixedly connected to an ascending frame (62). The top of the ascending frame (62) is fixedly connected to multiple anti-slip buckles (63). The top of the base plate (1) is fixedly connected to a third hydraulic cylinder (64), and the driving end of the third hydraulic cylinder (64) is fixedly connected to an unloading assembly (65).

4. The seamless steel pipe processing expansion device according to claim 3, characterized in that: The unloading assembly (65) includes a connecting column (651), one end of which is fixedly connected to the drive end of the hydraulic cylinder (64), and the other end of which is fixedly connected to a release frame (652). Two release heads (653) are fixedly connected to the outer wall of the release frame (652).

5. A pipe expander for processing seamless steel pipes according to claim 2, characterized in that: The outer wall of the fixing buckle (556) is slidably connected to the outer wall of the positioning frame (53), and the outer wall of the slide rod (554) is slidably connected to the outer wall of the fixing buckle (556).

6. The seamless steel pipe processing expansion device according to claim 2, characterized in that: The outer wall of the rotating column (552) is rotatably connected to the inner wall of the positioning frame (53), and the outer wall of the connecting rod (553) is rotatably connected to the inner wall of the positioning frame (53).

7. The seamless steel pipe processing expansion device according to claim 4, characterized in that: The bottom of the release frame (652) is slidably connected to the top of the base plate (1), and the bottoms of the two release heads (653) are also slidably connected to the top of the base plate (1).

8. The seamless steel pipe processing expansion device according to claim 4, characterized in that: The outer walls of both detachment heads (653) are slidably connected to the outer wall of the riser (62), which is detachably connected to the top of the base plate (1).

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