Low-alloy structural steel

Abstract

The utility model discloses low-alloy structural steel, which relates to the technical field of structural steel and comprises a bottom block and an extension block, a rotatable first bidirectional screw rod and a rotatable second bidirectional screw rod are mounted in the extension block, and a first helical gear and a second helical gear are respectively arranged on the outer walls of the first bidirectional screw rod and the second bidirectional screw rod. The outer wall of the first bidirectional screw rod is in threaded connection with a first moving block, one side of the first moving block is provided with a welding block, the outer wall of the second bidirectional screw rod is in threaded connection with a second moving block, and one side of the second moving block is connected with a welding block; according to the box type steel pipe welding device, the multiple welding blocks and the multiple inner supporting blocks are arranged, so that the box type steel pipe can be fixed before welding, the welding quality is guaranteed, meanwhile, the welding efficiency is improved, and the overall practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of structural steel, and particularly relates to a low-alloy structural steel. Background Technique

[0002] In the field of metal materials, low-alloy structural steels are widely used in pressure vessels, chemical equipment, bridges, vehicles, ships, and large steel structures due to their excellent comprehensive properties. By adding a small amount of alloying elements, these steels not only significantly improve the strength of the steel but also maintain good toughness, plasticity, and weldability. Especially in the welding field, the good toughness and plasticity of low-alloy structural steels enable them to have a longer service life when used as welded parts. However, when facing certain special-shaped welding materials, low-alloy structural steels cannot effectively complete the welding work quickly.

[0003] For example, in the existing box-shaped steel columns, when using low-alloy structural steel as a welded part to connect box-shaped steel columns, even a slight deviation in the docking position will cause one or both sides of the box-shaped steel column to be unable to be welded. Since the inside of the box-shaped steel column is hollow and can only be welded around the edge position, when using low-alloy structural steel as a welded part, low-alloy structural steel cannot ensure the accurate docking of the box shape, resulting in the quality of the welding work not being guaranteed and affecting the overall work efficiency at the same time.

[0004] In view of this, a low-alloy structural steel is provided to overcome the above defects. Content of the Utility Model

[0005] The purpose of the utility model is to provide a low-alloy structural steel to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, a low-alloy structural steel provided by the utility model includes a bottom block and an extension block. A rotatable first bidirectional lead screw and a second bidirectional lead screw are installed inside the extension block. First helical gears and second helical gears are respectively arranged on the outer walls of the first bidirectional lead screw and the second bidirectional lead screw. A first moving block is threadedly connected to the outer wall of the first bidirectional lead screw. A welding block is arranged on one side of the first moving block. A second moving block is threadedly connected to the outer wall of the second bidirectional lead screw. A welding block is connected to one side of the second moving block.

[0007] Further, the specific number of the welding blocks is four, and the numbers of the second moving block and the first moving block are both two. Two of the four welding blocks are connected to one side of the second moving block, and the other two are arranged on one side of the first moving block.

[0008] Further, a connecting plate is fixedly connected to one side of the first moving block, and the first moving block is connected to the welding block through the connecting plate.

[0009] Furthermore, an inner support block is integrally formed at the top end of the welding block.

[0010] Furthermore, a top cover is fixedly installed on the top surface of the side wall of the extension block, and a limiting barrel groove is formed on the top surface of the top cover.

[0011] Furthermore, the first helical gear and the second helical gear are respectively fixedly installed at the middle positions on the outer walls of the first bidirectional lead screw and the second bidirectional lead screw, and the first helical gear meshes with the second helical gear.

[0012] Furthermore, the two first moving blocks and the two second moving blocks are symmetrically arranged on the outer walls of the first bidirectional lead screw and the second helical gear respectively.

[0013] Furthermore, the specific number of the extension blocks is four, reinforcing ribs are installed between the four extension blocks, and fixing bolts are arranged on the top surface of the reinforcing ribs.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By arranging a plurality of welding blocks and a plurality of inner support blocks, the position of the box-shaped steel pipe can be fixed before welding, which not only ensures the welding quality but also increases the welding efficiency and improves the overall practicality of the device.

[0016] By arranging a plurality of welding blocks and a plurality of inner support blocks and setting the positions of the welding blocks and the inner support blocks to be movable, the device can fix the positions of box-shaped steel pipes with different sizes, increasing the applicable range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole view of the present utility model;

[0018] Figure 2 is a three-dimensional structural diagram of the side view of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the top view of the present utility model;

[0020] Figure 4 Figure 3 is a schematic sectional structural diagram at A-A in ;

[0021] In the figure: 1, bottom block; 2, extension block; 3, top cover; 4, reinforcing rib; 5, fixing bolt; 6, rotating block; 7, inner support block; 8, limiting barrel groove; 9, installation cavity; 10, first bidirectional lead screw; 11, first moving block; 12, first helical gear; 13, connecting plate; 14, welding block; 15, second bidirectional lead screw; 16, second helical gear; 17, second moving block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Refer to Figures 1-4 , a low-alloy structural steel, including a bottom block 1 and an extension block 2. A rotatable first double lead screw 10 and a second double lead screw 15 are installed inside the extension block 2. First bevel gears 12 and second bevel gears 16 are respectively arranged on the outer walls of the first double lead screw 10 and the second double lead screw 15. A first moving block 11 is threadedly connected to the outer wall of the first double lead screw 10. A welding block 14 is arranged on one side of the first moving block 11. A second moving block 17 is threadedly connected to the outer wall of the second double lead screw 15. A welding block 14 is connected to one side of the second moving block 17. An inner support block 7 is integrally formed at the top of the welding block 14.

[0025] Furthermore, the specific number of the welding blocks 14 is four. The number of the second moving blocks 17 and the first moving blocks 11 is two each. Two of the four welding blocks 14 are connected to one side of the second moving block 17, and the other two are arranged on one side of the first moving block 11. By setting the specific number of the welding blocks 14 to be four, the user can use the inner support blocks 7 connected to one side of the welding blocks 14 to support the four sides of the inner wall of the box-shaped steel pipe simultaneously. By setting two of the four welding blocks 14 to be connected to one side of the second moving block 17 and the other two to be arranged on one side of the first moving block 11, the movement of the second moving block 17 and the first moving block 11 can respectively control the movement of two welding blocks 14 together.

[0026] Furthermore, refer to the extension block 2 in the figure. The specific number of the extension blocks 2 is four. Reinforcing ribs 4 are installed between the four extension blocks 2. Fixing bolts 5 are arranged on the top surface of the reinforcing ribs 4. By setting the reinforcing ribs 4, the overall strength of the device is enhanced.

[0027] In addition, a top cover 3 is fixedly installed on the top surface of the side wall of the extension block 2. A limiting barrel groove 8 is opened on the top surface of the top cover 3. One side of the first moving block 11 is fixedly connected with a connecting plate 13. The first moving block 11 is connected to the welding block 14 through the connecting plate 13. By providing the limiting barrel groove 8, the connecting plate 13 and the second moving block 17 can be connected to the welding block 14 through the limiting barrel groove 8. An installation cavity 9 is opened inside the extension block 2. The first bidirectional lead screw 10 and the second bidirectional lead screw 15 are rotatably installed on the inner wall of the installation cavity 9.

[0028] It should be noted that the first helical gear 12 and the second helical gear 16 are respectively fixedly installed at the middle positions on the outer walls of the first bidirectional lead screw 10 and the second bidirectional lead screw 15. The first helical gear 12 meshes with the second helical gear 16. This setting enables the first bidirectional lead screw 10 or the second bidirectional lead screw 15 to drive the other to rotate after rotation. The two first moving blocks 11 and the two second moving blocks 17 are respectively symmetrically arranged on the outer walls of the first bidirectional lead screw 10 and the second helical gear 16. This setting enables the two first moving blocks 11 to move synchronously towards the middle after the first bidirectional lead screw 10 rotates.

[0029] During specific implementation, the user needs to place the box-shaped steel pipe on the outer walls of the four inner support blocks 7. Then the user needs to rotate the rotating block 6 to drive the first bidirectional lead screw 10 fixedly connected to the rotating block 6 to rotate. After the first bidirectional lead screw 10 rotates, the two first moving blocks 11 threadedly connected to the outer wall of the first bidirectional lead screw 10 will be driven to move away from each other. Since the first helical gear 12 fixedly installed on the outer wall of the first bidirectional lead screw 10 meshes with the second helical gear 16, the second bidirectional lead screw 15 will rotate synchronously with the first bidirectional lead screw 10. After the second bidirectional lead screw 15 rotates, the two second moving blocks 17 threadedly connected to the outer wall of the second bidirectional lead screw 15 will also move away from each other. At this time, the four welding blocks 14 will be simultaneously driven to move outwards. When the inner support blocks 7 connected above the welding blocks 14 fit into the inside of the box-shaped steel pipe, the rotation of the rotating block 6 can be stopped.

[0030] At this time, the box-shaped steel pipe is restricted by the four inner support blocks 7 and will not easily displace. The user then uses the space of the reinforcing rib 4 to weld the top cover 3 and the box-shaped steel pipe, and the preliminary docking can be accurately and quickly completed.

[0031] By providing a plurality of welding blocks 14 and a plurality of inner support blocks 7, the position of the box-shaped steel pipe can be fixed before welding, ensuring the welding quality while increasing the welding efficiency and improving the overall practicality of the device.

[0032] By setting a plurality of welding blocks 14 and a plurality of inner support blocks 7, and setting the positions of the welding blocks 14 and the inner support blocks 7 to be movable, the device can fix the positions of box-shaped steel pipes of different sizes, increasing the scope of application of the device.

[0033] Working principle: The user needs to place the box-shaped steel pipe on the outer walls of the four inner support blocks 7. Then, the user needs to rotate the rotating block 6 to drive the first bidirectional lead screw 10 fixedly connected to the rotating block 6 to rotate. After the first bidirectional lead screw 10 rotates, the two first moving blocks 11 threadedly connected to the outer wall of the first bidirectional lead screw 10 will be driven to move away from each other. The first helical gear 12 fixedly installed on the outer wall of the first bidirectional lead screw 10 meshes with the second helical gear 16. Therefore, the second bidirectional lead screw 15 will rotate synchronously with the first bidirectional lead screw 10. After the second bidirectional lead screw 15 rotates, the two second moving blocks 17 threadedly connected to the outer wall of the second bidirectional lead screw 15 will also move away from each other. At this time, the four welding blocks 14 will be simultaneously driven to move outwards. When the inner support block 7 connected above the welding block 14 fits into the inside of the box-shaped steel pipe, the rotation of the rotating block 6 can be stopped.

[0034] At this time, the box-shaped steel pipe is restricted by the four inner support blocks 7 and will not easily displace. The user can then use the space of the reinforcing rib 4 to weld the top cover 3 and the box-shaped steel pipe, and thus can accurately and quickly complete the preliminary docking.

[0035] By setting a plurality of welding blocks 14 and a plurality of inner support blocks 7, the device can fix the position of the box-shaped steel pipe before welding, ensuring the welding quality while increasing the welding efficiency and improving the overall practicality of the device.

[0036] By setting a plurality of welding blocks 14 and a plurality of inner support blocks 7, and setting the positions of the welding blocks 14 and the inner support blocks 7 to be movable, the device can fix the positions of box-shaped steel pipes of different sizes, increasing the scope of application of the device.

Claims

1. A low-alloy structural steel, comprising a bottom block (1) and an extension block (2), characterized in that, A rotatable first bidirectional lead screw (10) and a second bidirectional lead screw (15) are installed inside the extension block (2). First helical gears (12) and second helical gears (16) are respectively arranged on the outer walls of the first bidirectional lead screw (10) and the second bidirectional lead screw (15). A first moving block (11) is threadedly connected to the outer wall of the first bidirectional lead screw (10). A welding block (14) is arranged on one side of the first moving block (11). A second moving block (17) is threadedly connected to the outer wall of the second bidirectional lead screw (15). A welding block (14) is connected to one side of the second moving block (17).

2. A low-alloy structural steel as claimed in claim 1, characterized in that: The specific number of the welding blocks (14) is four. The number of both the second moving blocks (17) and the first moving blocks (11) is two. Two of the four welding blocks (14) are connected to one side of the second moving blocks (17), and the other two are arranged on one side of the first moving blocks (11).

3. A low-alloy structural steel as claimed in claim 1, characterized in that: A connecting plate (13) is fixedly connected to one side of the first moving block (11). The first moving block (11) is connected to the welding block (14) through the connecting plate (13).

4. A low-alloy structural steel as claimed in claim 1, wherein: An inner support block (7) is integrally formed at the top end of the welding block (14).

5. A low-alloy structural steel as claimed in claim 1, characterized in that: A top cover (3) is fixedly installed on the top surface of the side wall of the extension block (2). A limiting barrel groove (8) is formed on the top surface of the top cover (3).

6. A low-alloy structural steel as claimed in claim 1, characterized in that: The first helical gear (12) and the second helical gear (16) are respectively fixedly installed at the middle positions on the outer walls of the first bidirectional lead screw (10) and the second bidirectional lead screw (15). The first helical gear (12) meshes with the second helical gear (16).

7. A low-alloy structural steel according to claim 2, characterized in that: The two first moving blocks (11) and the two second moving blocks (17) are symmetrically arranged on the outer walls of the first bidirectional lead screw (10) and the second helical gear (16) respectively.

8. A low-alloy structural steel according to claim 1, characterized in that: The specific number of the extension blocks (2) is four. Reinforcing ribs (4) are installed between the four extension blocks (2). Fixing bolts (5) are arranged on the top surfaces of the reinforcing ribs (4).

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