Seamless steel tube sizing mill convenient to maintain

Abstract

The utility model discloses a seamless steel pipe sizing mill convenient to maintain, and belongs to the field of seamless steel pipe sizing mills, arc-shaped steel pipe grooves are formed in the side walls of three sizing wheels, the three arc-shaped steel pipe grooves form a steel pipe sizing hole, and a seamless steel pipe is inserted into the steel pipe sizing hole to achieve steel pipe sizing operation; a first protruding block is arranged at the corner of the side wall of the first sizing support, a second protruding block is arranged at the corner of the side wall of the second sizing support, and the first protruding block and the second protruding block pass through a connecting shaft assembly. The two sizing supports are easily opened and closed through the protruding blocks and the connecting shaft assemblies, an overhauling notch is formed, the sizing wheel can be conveniently and rapidly disassembled, and the maintaining process is simplified. The fixing piece ensures the stability and safety of the equipment during use, and the bracket is prevented from accidentally moving or loosening through the fixing seat, the fastening bolt and the anti-skid gasket. The design improves the flexibility and adaptability of the equipment, the bracket can be quickly opened and closed by simply loosening the bolt and rotating the connecting shaft when the sizing wheel is replaced or maintained, the time is saved, the cost is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe sizing machines, and in particular to a seamless steel pipe sizing machine that is easy to maintain. Background Technology

[0002] A seamless steel pipe sizing mill is a mechanical device that uses a Pilger mill to reheat steel pipes produced by a walking beam furnace before sizing them, resulting in steel pipes with high-precision dimensions. The primary function of the sizing mill is to perform micro-diameter reduction (sizing) processing on steel pipes to ensure that the pipe's diameter and ovality meet standard requirements. Additionally, it can be used as a shaped pipe forming unit, processing welded round pipes into various cross-sectional shapes. Simultaneously, the sizing mill can perform fine finishing on the steel pipe surface, making it smooth and flawless, and eliminating burrs and tool marks. Furthermore, it has a coarse straightening function, effectively eliminating bending phenomena after the steel pipe cools.

[0003] The working principle of a sizing mill is to roll steel pipes using rolls to achieve the required dimensional accuracy and roundness. During the rolling process, bearings within the sizing roll box are responsible for support and rotation, ensuring the sizing rolls remain in the correct position within the mill stand. Axial and radial adjustment devices for the rolls allow for precise adjustment of the roll position to meet the rolling requirements of steel pipes of different specifications.

[0004] In seamless steel pipe production, the sizing mill plays a crucial role. The integral molding of the sizing mill body also means that the connections between its components are tighter. While this helps improve the stability and efficiency of the rolling process, it increases the difficulty of disassembly during equipment maintenance or roll replacement.

[0005] Especially when replacing sizing rolls, the rolls are tightly fitted to components such as the mill frame, and the disassembly process usually requires the use of special tools, which may even require damage to some connecting parts. This not only increases the complexity of disassembly but may also cause some damage to the equipment. In addition, due to the large weight and size of the rolls, special attention must be paid to safety issues during disassembly and installation, which further increases the difficulty and time cost of the operation. Utility Model Content

[0006] The main objective of this invention is to provide a seamless steel pipe sizing machine that is easy to maintain, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A seamless steel pipe sizing machine that is easy to maintain includes a sizing support, a through groove, sizing wheels, joints and connecting parts. The three joints are installed on the first sizing support and the second sizing support. The connecting parts are located on the joints. The through groove is located on the end face of the first sizing support and the second sizing support. The three sizing wheels are installed on the first sizing support and the second sizing support.

[0009] The sidewalls of the three sizing wheels are provided with arc-shaped steel pipe grooves, which form steel pipe sizing holes. Seamless steel pipes are inserted into the steel pipe sizing holes to realize the steel pipe sizing operation.

[0010] The first sizing bracket has a first protrusion at the corner of its side wall, and the second sizing bracket has a second protrusion at the corner of its side wall. The first and second protrusions are connected by a connecting shaft assembly, which enables the opening and closing of the two sizing brackets. The opening and closing opening is a maintenance notch, which facilitates the disassembly and maintenance of the sizing wheel.

[0011] As an optional solution of this application, a fixing component is installed at the maintenance notch of the first sizing bracket and the second sizing bracket to fix the opening and closing of the first sizing bracket and the second sizing bracket. The fixing component includes a fixing seat, a fastening bolt and an anti-slip washer. The fastening bolt and the anti-slip washer are inserted into the opening on the fixing seat. The fastening bolt is inserted into the fixing seat to fix the first sizing bracket and the second sizing bracket.

[0012] As an optional solution of this application, the side walls of the first sizing bracket and the second sizing bracket are provided with three grooves, and the connector is installed in the grooves. The three grooves and the connector are distributed in a triangular shape.

[0013] As an optional solution of this application, the cross-sections of the three sizing wheels are designed in a "Y" shape and are adapted to the joint, and the cross-sections of the arc-shaped steel pipe grooves are designed in a "C" shape, with the three arc-shaped steel pipe grooves forming a circular hole;

[0014] As an optional solution of this application, the first protrusion is welded and fixed to the first sizing bracket, and the edge of the first sizing bracket is arc-shaped; the second protrusion is welded and fixed to the second sizing bracket, and the edge of the second sizing bracket is arc-shaped.

[0015] As an optional solution of this application, the connecting shaft assembly includes a "T"-shaped shaft and a limiting nut. The "T"-shaped shaft is inserted into the openings of the first protrusion and the second protrusion, and the limiting nut is fitted to realize the connection between the first protrusion and the second protrusion.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The first and second sizing brackets can be easily opened and closed through protrusions and connecting shaft assemblies, forming a spacious maintenance opening that allows operators to quickly access and disassemble the sizing wheel, simplifying the maintenance process.

[0018] The use of fasteners ensures the stability and safety of the equipment during use. The combination of mounting brackets, fastening bolts, and anti-slip washers effectively prevents accidental movement or loosening of the support frame during use, providing a stable working platform for maintenance personnel.

[0019] This design also enhances the flexibility and adaptability of the equipment. When the sizing wheel needs to be replaced or repaired, the operator can simply loosen the fastening bolts and rotate the connecting shaft assembly to quickly open and close the bracket, eliminating the need for cumbersome disassembly and reassembly. This not only saves time but also reduces maintenance costs and improves the overall operating efficiency of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a diagram showing the overall structure of the present invention;

[0022] Figure 3 This is a side view of the overall structure of this utility model;

[0023] Figure 4 This is a diagram illustrating the sizing bracket, protrusion, and connecting shaft assembly of this utility model.

[0024] Figure 5 This is a schematic diagram of the sizing bracket, protrusion, and fixing component of this utility model.

[0025] In the figure: 1. First sizing bracket; 2. Second sizing bracket; 3. Through groove; 4. Sizing wheel; 5. Arc-shaped steel pipe groove; 6. Steel pipe sizing hole; 7. Joint; 8. Butt joint; 9. Inspection notch; 10. Groove; 11. First protrusion; 12. Second protrusion; 13. Connecting shaft assembly; 14. Fixing component. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5As shown, a seamless steel pipe sizing machine that is easy to maintain mainly consists of key components such as sizing supports, through grooves 3, sizing wheels 4, joints 7, and connecting parts 8. Specifically, the sizing supports are divided into a first sizing support 1 and a second sizing support 2. Each support is equipped with three joints 7, which are positioned at corresponding locations on the first sizing support 1 and the second sizing support 2. The connecting parts 8 are located on these joints 7 to facilitate the sizing operation of the seamless steel pipe. Through grooves 3 are provided on the end faces of the first sizing support 1 and the second sizing support 2 to ensure smooth passage of the steel pipe.

[0028] There are three sizing wheels 4, which are mounted on the first sizing bracket 1 and the second sizing bracket 2. Each sizing wheel 4 has an arc-shaped steel pipe groove 5 on its side wall, and these arc-shaped steel pipe grooves 5 together form a steel pipe sizing hole 6. When a seamless steel pipe is inserted into these steel pipe sizing holes 6, the steel pipe sizing operation can be performed. This design not only improves the accuracy of sizing, but also facilitates the operator in sizing the steel pipe.

[0029] To facilitate maintenance and replacement of the sizing wheel 4, a first protrusion 11 is specially designed at the corner of the side wall of the first sizing bracket 1, while a second protrusion 12 is designed at the corner of the side wall of the second sizing bracket 2. These two protrusions are connected to each other via a connecting shaft assembly 13, allowing the two sizing brackets to be easily opened and closed. The inspection notch 9 formed after opening and closing facilitates the disassembly and maintenance of the sizing wheel 4, greatly improving maintenance efficiency.

[0030] To ensure the stability of the maintenance notch 9 during opening and closing, fasteners 14 are installed at the maintenance notch 9 of both the first sizing bracket 1 and the second sizing bracket 2. These fasteners 14 include a fixing seat, fastening bolts, and anti-slip washers. The fastening bolts and anti-slip washers are inserted into the openings on the fixing seats. By inserting the fastening bolts, the first sizing bracket 1 and the second sizing bracket 2 can be fixed, thereby ensuring the stability and safety of the equipment during maintenance.

[0031] Furthermore, to further optimize the structure, three grooves 10 are provided on the side walls of both the first sizing bracket 1 and the second sizing bracket 2, and the connector 7 is installed in these grooves 10. The distribution of the three grooves 10 and the connector 7 is in a triangular shape. This design is not only aesthetically pleasing, but also effectively distributes the force, improving the stability and durability of the equipment.

[0032] The design of the sizing wheels 4 is also innovative. Their cross-section is Y-shaped, which matches the shape of the connector 7 and ensures a tight fit between the sizing wheels 4 and the connector 7. The cross-section of the arc-shaped steel pipe groove 5 is C-shaped. The three arc-shaped steel pipe grooves 5 are combined to form a circular hole, which provides precise dimensions and shape for sizing the seamless steel pipe.

[0033] To further enhance the stability and durability of the sizing brackets, the first protrusion 11 is fixed to the first sizing bracket 1 by welding, and the second protrusion 12 is also fixed to the second sizing bracket 2 by welding. Furthermore, to accommodate steel pipes of different sizes, the edges of both the first sizing bracket 1 and the second sizing bracket 2 are designed with an arc shape. This design better adapts to the shape of the steel pipe and improves the accuracy of sizing.

[0034] The design of the connecting shaft assembly 13 is also ingenious, comprising a "T"-shaped shaft and a limiting nut. The connection between the first protrusion 11 and the second protrusion 12 is achieved by inserting the "T"-shaped shaft into the openings of the first protrusion 11 and the second protrusion 12, and then fitting the limiting nut onto the shaft. This design not only ensures the stability of the connection, but the limiting nut also prevents excessive rotation of the shaft, thereby ensuring the stable operation of the entire sizing machine.

[0035] Install the three connectors 7 into the corresponding grooves 10 of the first sizing bracket 1 and the second sizing bracket 2, respectively. Ensure that the connectors 7 and the grooves 10 are arranged in a triangular pattern. Install the three sizing wheels 4 into the corresponding positions of the first sizing bracket 1 and the second sizing bracket 2. Ensure that the arc-shaped steel pipe grooves 5 of each sizing wheel 4 are correctly aligned to form the steel pipe sizing holes 6. Set the through grooves 3 on the end faces of the first sizing bracket 1 and the second sizing bracket 2 to ensure that the steel pipe can pass through smoothly. Fix the first protrusion 11 to the first sizing bracket 1 by welding. Fix the second protrusion 12 to the second sizing bracket 2 by welding. Insert the "T"-shaped shaft into the openings of the first protrusion 11 and the second protrusion 12. Fit the limiting nut on the "T"-shaped shaft to connect the first protrusion 11 and the second protrusion 12. Install the fixing seat at the inspection notch 9 of the first sizing bracket 1 and the second sizing bracket 2.

[0036] Insert the fastening bolts and anti-slip washers into the openings on the mounting base to ensure the stability and safety of the equipment during maintenance. Install the mating part 8 onto the connector 7 to facilitate the sizing operation of the seamless steel pipe.

[0037] Loosen the fastening bolts and remove the anti-slip washers and mounting brackets. Ensure the equipment is in a safe condition to avoid accidents during maintenance. Remove the limit nut and rotate the "T"-shaped shaft to separate the first sizing bracket 1 and the second sizing bracket 2. This creates an inspection notch 9, facilitating the disassembly and maintenance of the sizing wheel 4. Loosen and remove the fastening bolts on the sizing wheel 4. Carefully remove the sizing wheel 4 to inspect its wear or perform necessary repairs.

[0038] Inspect the wear condition of the arc-shaped steel pipe groove 5 and the joint 7 of the sizing wheel 4. Replace worn parts or perform necessary repairs. Install the new or repaired sizing wheel 4 into its appropriate position. Tighten the bolts on the sizing wheel 4 to ensure it is secure. Install the limit nut to ensure it is secure. Rotate the "T"-shaped shaft to close the first sizing bracket 1 and the second sizing bracket 2. Install the fixing seat, tighten the bolts and anti-slip washers to ensure equipment stability. Conduct a trial run to check if the equipment is working properly. Ensure that seamless steel pipes can pass through smoothly and perform precise sizing. After confirming that the equipment is operating normally, end the maintenance work. Clean the work area to ensure the equipment and environment are clean.

[0039] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A seamless steel pipe sizing machine that is easy to maintain, comprising a sizing support, a through groove (3), sizing wheels (4), a connector (7), and a mating part (8), wherein three of the connectors (7) are mounted on a first sizing support (1) and a second sizing support (2), the mating part (8) is located on the connector (7), the through groove (3) is located on the end face of the first sizing support (1) and the second sizing support (2), and three sizing wheels (4) are mounted on the first sizing support (1) and the second sizing support (2), characterized in that: The side walls of the three sizing wheels (4) are provided with arc-shaped steel pipe grooves (5), and the three arc-shaped steel pipe grooves (5) form steel pipe sizing holes (6). Seamless steel pipes are inserted into the steel pipe sizing holes (6) to realize the steel pipe sizing operation. The first sizing bracket (1) has a first protrusion (11) at the corner of its side wall, and the second sizing bracket (2) has a second protrusion (12) at the corner of its side wall. The first protrusion (11) and the second protrusion (12) are connected by a connecting shaft assembly (13). The two sizing brackets can be opened and closed by the protrusion and the connecting shaft assembly (13). The opening and closing opening is a maintenance notch (9), which facilitates the disassembly and maintenance of the sizing wheel (4).

2. The seamless steel pipe sizing machine for easy maintenance according to claim 1, characterized in that: A fixing component (14) is installed at the maintenance notch (9) of the first sizing bracket (1) and the second sizing bracket (2) to fix the opening and closing of the first sizing bracket (1) and the second sizing bracket (2). The fixing component (14) includes a fixing seat, a fastening bolt and an anti-slip washer. The fastening bolt and the anti-slip washer are inserted into the opening on the fixing seat. The fastening bolt is inserted into the fixing seat to fix the first sizing bracket (1) and the second sizing bracket (2).

3. The seamless steel pipe sizing machine for easy maintenance according to claim 2, characterized in that: The first sizing bracket (1) and the second sizing bracket (2) have three grooves (10) on their side walls, and the connector (7) is installed in the groove (10). The three grooves (10) and the connector (7) are arranged in a triangular pattern.

4. A seamless steel pipe sizing machine that is easy to maintain according to claim 3, characterized in that: The cross-sections of the three sizing wheels (4) are designed in a "Y" shape and are adapted to the joint (7). The cross-sections of the arc-shaped steel pipe groove (5) are designed in a "C" shape, and the three arc-shaped steel pipe grooves (5) form a circular hole.

5. A seamless steel pipe sizing machine that is easy to maintain according to claim 4, characterized in that: The first protrusion (11) is welded and fixed to the first sizing bracket (1), and the edge of the first sizing bracket (1) is arc-shaped. The second protrusion (12) is welded and fixed to the second sizing bracket (2), and the edge of the second sizing bracket (2) is arc-shaped.

6. A seamless steel pipe sizing machine that is easy to maintain according to claim 5, characterized in that: The connecting shaft assembly (13) includes a "T"-shaped shaft and a limiting nut. The "T"-shaped shaft is inserted into the openings of the first protrusion (11) and the second protrusion (12), and the limiting nut is fitted to realize the connection between the first protrusion (11) and the second protrusion (12).

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