A seamless steel pipe expanding device suitable for various specifications

Abstract

The utility model discloses a kind of seamless steel pipe expanding equipment suitable for multiple specifications, relate to seamless steel pipe expanding equipment technical field.A kind of seamless steel pipe expanding equipment suitable for multiple specifications, it includes: support platform, the front side and rear side of support platform upper end are fixedly connected with arc base, the inside of arc base is provided with steel pipe main body, the upper fixedly connected with fixed frame of support platform, expanding assembly and positioning assembly, the expanding assembly is located in the rear side of support platform upper end, the expanding assembly is used to carry out expanding treatment to steel pipe main body, the positioning assembly is located on fixed frame, the positioning assembly is used to carry out the compression fixed of steel pipe main body on arc base.Solve the technical problem that the existing expanding equipment cannot be suitable for multiple specifications of seamless steel pipe, when expanding seamless steel pipe, different size seamless steel pipe cannot be compressed fixed, easily cause expanding displacement, affect expanding quality.

Description

Technical Field

[0001] This utility model relates to the technical field of seamless steel pipe expansion equipment, and in particular to a seamless steel pipe expansion equipment applicable to various specifications. Background Technology

[0002] Seamless steel pipes are widely used in the industrial field. Different scenarios have different requirements for the diameter of steel pipes, so steel pipes need to be processed by diameter expansion equipment.

[0003] However, existing technologies have some problems: existing expansion equipment cannot be applied to seamless steel pipes of various specifications. When expanding the diameter of seamless steel pipes, it cannot press and fix seamless steel pipes of different sizes, which can easily cause displacement during expansion and affect the expansion quality. Therefore, it is necessary to provide a seamless steel pipe expansion equipment applicable to various specifications to solve the above technical problems. Utility Model Content

[0004] This utility model provides a seamless steel pipe diameter expansion device applicable to various specifications, solving the technical problem that existing diameter expansion devices cannot be applied to seamless steel pipes of various specifications, and cannot clamp and fix seamless steel pipes of different sizes during diameter expansion, which easily causes displacement during diameter expansion and affects the diameter expansion quality.

[0005] To solve the above-mentioned technical problems, this utility model provides a seamless steel pipe diameter expansion device suitable for various specifications, comprising:

[0006] A support platform, wherein an arc-shaped base is fixedly connected to the front and rear sides of the upper end of the support platform, and a steel pipe body is provided inside the arc-shaped base; a fixing frame is fixedly connected to the top of the support platform.

[0007] The expansion assembly and the positioning assembly are located on the rear side of the upper end of the support platform. The expansion assembly is used to expand the diameter of the steel pipe body. The positioning assembly is located on the fixing frame and is used to press and fix the steel pipe body on the arc-shaped base.

[0008] Preferably, the expanding assembly includes a mounting base, a hydraulic cylinder is fixedly connected to the rear side of the mounting base, and the output end of the hydraulic cylinder extends to the front side of the mounting base and is fixedly connected to an expanding head.

[0009] Preferably, the expanding head adopts a conical design and achieves sizing through mechanical extrusion, thereby eliminating welding stress.

[0010] Preferably, the positioning component includes a cylinder, the output end of which extends through to the lower end of the fixing frame and is fixedly connected to a fixing plate, and the front and rear sides of the lower end of the fixing plate are both fixedly connected to arc-shaped pressure seats adapted to the arc-shaped base.

[0011] Preferably, the front and rear sides of the inner sides of the fixing frame are provided with sliding grooves, and sliding blocks are slidably connected inside the sliding grooves. One side of the sliding block is fixedly connected to both sides of the fixing plate.

[0012] Preferably, support legs are fixedly connected around the lower end of the support platform, and anti-slip pads are fixedly connected to the lower ends of the support legs.

[0013] Compared with related technologies, the seamless steel pipe expansion device applicable to various specifications provided by this utility model has the following beneficial effects:

[0014] This utility model provides a seamless steel pipe diameter expansion device suitable for various specifications. Through the cooperation of the sliding groove and the sliding block, the fixed plate moves smoothly during use, preventing the fixed plate from shaking easily during use.

[0015] This utility model provides a seamless steel pipe diameter expansion device suitable for various specifications. Through the cooperation of the arc-shaped base and the arc-shaped pressure seat, the steel pipe body is clamped and positioned during use, solving the problem of displacement and slippage of the steel pipe body during use.

[0016] This utility model provides a seamless steel pipe diameter expansion device suitable for various specifications. Through the cooperation of the support legs and anti-slip pads, the support platform plays a supporting and stabilizing role during use, thereby increasing the stability of the support platform during use. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of a seamless steel pipe expansion device applicable to various specifications provided by this utility model;

[0018] Figure 2 This is a right-side view of the support platform structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the unfolded structure of the arc-shaped base and the main steel pipe of this utility model.

[0020] The following are the labels in the diagram: 1. Support platform; 2. Arc-shaped base; 3. Steel pipe body; 4. Fixing frame; 5. Diameter expansion assembly; 51. Mounting seat; 52. Hydraulic cylinder; 53. Diameter expansion head; 6. Positioning assembly; 61. Cylinder; 62. Fixing plate; 63. Arc-shaped pressure seat; 7. Sliding groove; 8. Sliding block; 9. Support leg. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Example 1:

[0023] Please see Figure 1-3 This utility model provides a technical solution: a seamless steel pipe diameter expansion device applicable to various specifications, comprising: a support platform 1, an arc-shaped base 2 fixedly connected to the front and rear sides of the upper end of the support platform 1, a steel pipe body 3 disposed inside the arc-shaped base 2, a fixing frame 4 fixedly connected above the support platform 1, a diameter expansion component 5 and a positioning component 6, the diameter expansion component 5 being located on the rear side of the upper end of the support platform 1, the diameter expansion component 5 being used to expand the diameter of the steel pipe body 3, and the positioning component 6 being located on the fixing frame 4, the positioning component 6 being used to press and fix the steel pipe body 3 on the arc-shaped base 2.

[0024] In this implementation scheme, the steel pipe body 3 is first placed in the arc-shaped base 2 on the support platform 1. The curved surface of the arc-shaped base 2 naturally fits the outer circle of the steel pipe body 3, and the initial centering can be completed without manual calibration. It is suitable for steel pipe bodies 3 with different diameters in the range of Φ50-Φ200mm. The anti-slip pad at the bottom of the support leg 9 increases the friction coefficient (≥0.8) to ensure no displacement during equipment operation and provide a stable foundation for processing. The cylinder 61 of the positioning component 6 is activated, and its output end pushes the fixed plate 62 to move vertically downward along the sliding groove 7. The gap between the sliding block 8 and the sliding groove 7 is ≤0.1mm to ensure verticality of movement. The arc-shaped pressure seat 63 is driven to descend synchronously. The arc-shaped pressure seat 63 and the arc-shaped base 2 adopt the same curvature design and can automatically fit the surface of the steel pipe body 3 according to its diameter to form an "upper and lower ring" clamping (the clamping force can be adjusted by the air pressure of the cylinder 61, ranging from 0.3-0.8MPa). This avoids damage to the surface of the steel pipe body 3 due to overpressure and also prevents radial movement during diameter expansion.

[0025] Example 2:

[0026] Please see Figure 1-3 As shown, based on Embodiment 1, this utility model provides a technical solution: the diameter expansion component 5 includes a mounting base 51, a hydraulic cylinder 52 is fixedly connected to the rear side of the mounting base 51, the output end of the hydraulic cylinder 52 extends to the front side of the mounting base 51 and is fixedly connected to a diameter expansion head 53, the diameter expansion head 53 adopts a conical design, and achieves diameter setting by mechanical extrusion to eliminate welding stress; the positioning component 6 includes a cylinder 61, the output end of the cylinder 61 extends through to the lower end of the fixing frame 4 and is fixedly connected to a fixing plate 62; the front and rear sides of the lower end of the fixing plate 62 are both fixedly connected to arc-shaped pressure seats 63 that are adapted to the arc-shaped base 2; the front and rear sides of both sides inside the fixing frame 4 are provided with sliding grooves 7; sliding blocks 8 are slidably connected inside the sliding grooves 7; one side of the sliding block 8 is fixedly connected to both sides of the fixing plate 62; support legs 9 are fixedly connected around the lower end of the support platform 1; and anti-slip pads are fixedly connected to the lower end of the support legs 9.

[0027] In this embodiment: After positioning is completed, the hydraulic cylinder 52 of the expansion assembly 5 drives the conical expansion head 53 to feed along the axial direction of the steel pipe body 3 at a forward speed of 5-10 mm / s. The surface of the cone is hardened (hardness ≥ HRC55). Through mechanical extrusion, the inner wall of the steel pipe body 3 is uniformly plastically deformed to achieve precise expansion from the original diameter to the target diameter. After the expansion is completed, the hydraulic cylinder 52 drives the expansion head 53 to retract in the opposite direction, and the cylinder 61 drives the arc-shaped pressure seat 63 to rise, so that the processed steel pipe body 3 can be taken out.

[0028] The working principle of the seamless steel pipe expansion device applicable to various specifications provided by this utility model is as follows:

[0029] Implementation steps for the first innovation point:

[0030] Step 1: First, place the steel pipe body 3 inside the arc-shaped base 2 on the support platform 1. The curved surface of the arc-shaped base 2 naturally fits the outer circle of the steel pipe body 3, and the initial centering can be completed without manual calibration. It is suitable for steel pipe bodies 3 with different diameters within the range of Φ50-Φ200mm. The anti-slip pads at the bottom of the support legs 9 increase the coefficient of friction (≥0.8) to ensure that there is no displacement when the equipment is running, providing a stable foundation for processing.

[0031] Step 2: Activate cylinder 61 of positioning component 6. Its output end pushes fixed plate 62 to move vertically downward along sliding groove 7. The gap between sliding block 8 and sliding groove 7 is ≤0.1mm to ensure verticality of movement. This drives arc-shaped pressure seat 63 to descend synchronously. Arc-shaped pressure seat 63 and arc-shaped base 2 adopt the same curvature design. It can automatically fit the surface of the steel pipe body 3 according to its diameter to form an "upper and lower ring" clamping (the clamping force can be adjusted by the air pressure of cylinder 61, ranging from 0.3 to 0.8MPa). This avoids damage to the surface of the steel pipe body 3 due to overpressure and also prevents radial movement during diameter expansion.

[0032] Implementation steps for the second innovation point:

[0033] Step 1: After positioning is completed, the hydraulic cylinder 52 of the expansion assembly 5 drives the conical expansion head 53 to feed along the axial direction of the steel pipe body 3 at a forward speed of 5-10 mm / s. The surface of the cone is hardened (hardness ≥ HRC55). Through mechanical extrusion, the inner wall of the steel pipe body 3 is uniformly plastically deformed to achieve precise expansion from the original diameter to the target diameter.

[0034] Step 2: After the diameter expansion is completed, the hydraulic cylinder 52 drives the diameter expansion head 53 to retract in the opposite direction, and the cylinder 61 drives the arc-shaped pressure seat 63 to rise, so that the processed steel pipe body 3 can be taken out.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seamless steel pipe diameter expansion device suitable for various specifications, characterized in that: include: A support platform (1) is fixedly connected to an arc-shaped base (2) on the front and rear sides of the upper end of the support platform (1). A steel pipe body (3) is provided inside the arc-shaped base (2). A fixing frame (4) is fixedly connected above the support platform (1). The expansion component (5) and the positioning component (6) are located on the rear side of the upper end of the support platform (1). The expansion component (5) is used to expand the diameter of the steel pipe body (3). The positioning component (6) is located on the fixing frame (4). The positioning component (6) is used to press and fix the steel pipe body (3) on the arc base (2).

2. The seamless steel pipe diameter expanding device applicable to various specifications according to claim 1, characterized in that, The expansion assembly (5) includes a mounting base (51), a hydraulic cylinder (52) is fixedly connected to the rear side of the mounting base (51), and the output end of the hydraulic cylinder (52) extends to the front side of the mounting base (51) and is fixedly connected to an expansion head (53).

3. The seamless steel pipe diameter expansion equipment applicable to various specifications according to claim 2, characterized in that, The expanding head (53) adopts a conical design and achieves sizing through mechanical extrusion, thereby eliminating welding stress.

4. The seamless steel pipe diameter expanding device applicable to various specifications according to claim 1, characterized in that, The positioning component (6) includes a cylinder (61), the output end of which extends through to the lower end of the fixing frame (4) and is fixedly connected to a fixing plate (62). The front and rear sides of the lower end of the fixing plate (62) are both fixedly connected to arc-shaped pressure seats (63) that are adapted to the arc-shaped base (2).

5. The seamless steel pipe diameter expanding device applicable to various specifications according to claim 1, characterized in that, The front and rear sides of the inner sides of the fixed frame (4) are provided with sliding grooves (7), and sliding blocks (8) are slidably connected inside the sliding grooves (7). One side of the sliding block (8) is fixedly connected to both sides of the fixed plate (62).

6. The seamless steel pipe diameter expansion device applicable to various specifications according to claim 1, characterized in that, Support legs (9) are fixedly connected around the lower end of the support platform (1), and anti-slip pads are fixedly connected to the lower end of the support legs (9).

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