Limiting device for steel structure welding

Abstract

The utility model relates to the technical field of steel structure welding, and discloses a limiting device for steel structure welding, which comprises a long beam, a short beam and a hydraulic jack, a small steel plate is fixedly welded on the upper flange of the short beam, a large steel plate is fixedly welded on the upper flange of the long beam, and a connecting box is mounted on the large steel plate; the interior of the connecting box is hollow, two movable grooves are formed in one side face of the connecting box, a two-way screw rod is rotationally connected between the two side walls in the connecting box, and two threaded sleeves are connected to the surface of the two-way screw rod in a threaded and sleeving mode. Compared with a traditional chain block pulling method, the device is small in occupied space, convenient to operate by workers, short in adjusting time, convenient to quickly and accurately position, simple and small in structure and convenient to use local materials.

Description

Technical Field

[0001] This utility model relates to the field of steel structure welding technology, specifically a limiting device for steel structure welding. Background Technology

[0002] With the country's strong advocacy for green prefabricated buildings in recent years, the development of steel structure buildings has become increasingly rapid. At the same time, some common problems in steel structure construction have become more and more prominent. In particular, in steel-concrete composite structures, the width of the joint between the steel beam and the corbel at the node or the segmented extension of the steel beam on site when it is too long is difficult to adjust and control. The traditional method is to install chain hoists and manually pull to adjust it, which wastes a lot of manpower, material resources and time, and the operation effect is poor. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a limiting device for steel structure welding, which solves the problem that the width of the joint is difficult to adjust and control when steel beams are joined and assembled with corbels at nodes or when large steel beams are too long and need to be segmented and extended on site. Traditional methods use chain hoists and manual pulling to adjust the joint, which wastes a lot of manpower, material resources and time, and the work results are poor.

[0004] This utility model provides the following technical solution: a limiting device for welding steel structures, including a long beam, a short beam, and a hydraulic jack, wherein a small steel plate is fixedly welded to the upper flange of the short beam, a large steel plate is fixedly welded to the upper flange of the long beam, and a connecting box is installed on the large steel plate;

[0005] The interior of the connecting box is hollow and has two movable slots on one side. A bidirectional screw is rotatably connected between the two inner side walls of the connecting box. Two threaded sleeves are threaded onto the surface of the bidirectional screw. One end of each of the two threaded sleeves extends to the outside of the connecting box and is fixedly connected to a clamping plate.

[0006] Preferred technical solution 1: A limiting rod is fixedly connected between the two inner side walls of the connecting box. Two limiting sleeves are slidably sleeved on the surface of the limiting rod. One end of each of the two limiting sleeves extends to the outside of the connecting box and is fixedly connected to the two clamping plates respectively. The two threaded sleeves and the two limiting sleeves can move inside the two movable slots respectively.

[0007] Preferred technical solution 2: A row of insert rods is fixedly connected to the surface of both clamping plates, and a fixing block is fixedly connected to the bottom of the hydraulic jack. A row of slots matching the insert rods is opened on both sides of the fixing block.

[0008] Preferred technical solution 3: The large steel plate is in the form of a portal cantilever, with one end of the root of the large steel plate welded to the upper flange of the long beam at the joint, and the other end of the head of the large steel plate crossing the small steel plate and keeping the cantilever free.

[0009] Preferred technical solution four: The inner two side walls of the large steel plate are provided with mounting grooves, and both mounting grooves are matched with the fixing block.

[0010] Preferred technical solution five: The upper and lower surfaces of the connecting box are fixedly connected with mounting plates, and the surfaces of the two mounting plates and the two sides of the large steel plate are provided with matching threaded holes. The connecting box can be connected and installed with the large steel plate using bolts.

[0011] Compared with the prior art, this utility model provides a limiting device for steel structure welding, which has the following beneficial effects: During welding, the steel beam is first hoisted and the far end of the steel beam is temporarily fixed. The near end of the steel beam is welded to the upper flange side with a temporary overlapping support to the steel bracket. Then, a small steel plate is welded to the upper flange of the short beam at the joint. One end of the root of the large steel plate is welded to the upper flange of the long beam at the joint, and the other end of the head crosses the small steel plate and keeps the cantilever free. When it is necessary to widen the joint between the long beam and the short beam, the connecting box is installed on the right side of the large steel plate with bolts. Then, the fixing block on the hydraulic jack is inserted into the installation groove for initial fixation. Then, the two screw sleeves and two clamps are driven by rotating the double-acting screw to fix the hydraulic jack. The fixing block is clamped, and the insertion rod is inserted into the slot for further locking, thus completing the fixation. The width of the joint between the long and short beams can be adjusted by extending the hydraulic jack. When it is necessary to narrow the joint between the long and short beams, the connecting box and the hydraulic jack are installed on the left side of the large steel plate. After the adjustment and welding are completed, the hydraulic jack is removed first, and then the large and small steel plates are cut off. The large and small steel plates can be reused multiple times. When using this device, it can effectively and quickly adjust the joint between the long and short beams, both narrowing and widening. It is efficient and practical, takes up less space than the traditional chain hoisting method, is convenient for workers to operate, and has a short adjustment time. It is easy to quickly and accurately position, has a simple and compact structure, and is convenient to use with local materials. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the butt joint narrowing installation structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the joint width adjustment installation structure of this utility model;

[0014] Figure 3 This is an exploded view of the large steel plate and connecting box structure of this utility model;

[0015] Figure 4This is a cross-sectional view of the internal structure of the connector box of this utility model.

[0016] In the diagram: 1. Long beam; 2. Short beam; 3. Hydraulic jack; 4. Small steel plate; 5. Large steel plate; 6. Connecting box; 7. Movable groove; 8. Double-acting screw; 9. Screw sleeve; 10. Clamping plate; 11. Limiting rod; 12. Limiting sleeve; 13. Insert rod; 14. Fixing block; 15. Slot; 16. Mounting groove; 17. Mounting plate; 18. Threaded hole. Detailed Implementation

[0017] Please see Figure 1-4 ,

[0018] Example 1: A limiting device for welding steel structure includes a long beam 1, a short beam 2, and a hydraulic jack 3. A small steel plate 4 is fixedly welded to the upper flange of the short beam 2, and a large steel plate 5 is fixedly welded to the upper flange of the long beam 1. A connecting box 6 is installed on the large steel plate 5.

[0019] The interior of the connecting box 6 is hollow and two movable slots 7 are opened on one side. A bidirectional screw 8 is rotatably connected between the two inner side walls of the connecting box 6. Two screw sleeves 9 are threaded on the surface of the bidirectional screw 8. One end of each screw sleeve 9 extends to the outside of the connecting box 6 and is fixedly connected to a clamping plate 10.

[0020] Example 2: The difference between this example and Example 1 is that a limiting rod 11 is fixedly connected between the two inner side walls of the connecting box 6. Two limiting sleeves 12 are slidably sleeved on the surface of the limiting rod 11. One end of each limiting sleeve 12 extends to the outside of the connecting box 6 and is fixedly connected to the two clamping plates 10 respectively. The two screw sleeves 9 and the two limiting sleeves 12 can move inside the two movable slots 7 respectively, which facilitates the restriction of the movement of the two clamping plates 10 and facilitates the fixing of the hydraulic jack 3.

[0021] Example 3: The difference between this example and Example 1 is that a row of insert rods 13 are fixedly connected to the surfaces of both clamping plates 10, and a fixing block 14 is fixedly connected to the bottom of the hydraulic jack 3. A row of slots 15 matching the insert rods 13 are opened on both sides of the fixing block 14 to further fix the hydraulic jack 3 and make it more stable.

[0022] Example 4: The difference between this example and Example 1 is that the large steel plate 5 is a portal cantilever. One end of the large steel plate 5 is welded to the upper flange of the long beam 1 at the joint. The other end of the head of the large steel plate 5 crosses the small steel plate 4 and keeps the cantilever free, so as to facilitate the adjustment of the joint between the long beam 1 and the short beam 2 by using the large and small steel plates and the hydraulic jack 3.

[0023] Example 5: The difference between this example and Example 1 is that the inner two side walls of the large steel plate 5 are provided with mounting grooves 16, and the two mounting grooves 16 are matched with the fixing block 14, which facilitates the initial installation and positioning of the hydraulic jack 3.

[0024] Example 6: The difference between this example and Example 1 is that the upper and lower surfaces of the connecting box 6 are fixedly connected with mounting plates 17. The surfaces of the two mounting plates 17 and the two sides of the large steel plate 5 are provided with matching threaded holes 18. The connecting box 6 can be connected and installed with the large steel plate 5 using bolts, which makes it convenient to install and fix the connecting box 6 and can be quickly disassembled and changed in position.

[0025] In summary, the limiting device for steel structure welding involves the following steps during welding: First, the steel beam is hoisted and its far end is temporarily fixed. The near end of the steel beam has a temporary steel bracket welded to its upper flange side, which serves as a support. Then, a small steel plate 4 is welded to the upper flange of the short beam 2 at the joint. One end of the large steel plate 5 is welded to the upper flange of the long beam 1 at the joint, while the other end of the large steel plate 5 crosses the small steel plate 4 and remains cantilevered. When the joint between the long beam 1 and the short beam 2 needs to be widened, the connecting box 6 is bolted to the right side of the large steel plate 5. Then, the fixing block 14 on the hydraulic jack 3 is inserted into the mounting groove 16 for initial fixation. Finally, rotating the double-acting screw 8 drives the two screw sleeves 9 and two clamping plates 10 to clamp the fixing block 14 of the hydraulic jack 3. Insert the rod 13 into the slot 15 for further locking to complete the fixation. The width of the joint between the long beam 1 and the short beam 2 can be adjusted by extending the hydraulic jack 3. When it is necessary to narrow the joint between the long beam 1 and the short beam 2, simply install the connecting box 6 and the hydraulic jack 3 on the left side of the large steel plate 5. After the adjustment and welding are completed, first remove the hydraulic jack 3, and then cut off the large steel plate 5 and the small steel plate 4. The large and small steel plates can be used multiple times. When using this device, it can effectively and quickly adjust the joint between the long beam 1 and the short beam 2, which can be narrowed or widened. It is efficient and practical, takes up less space than the traditional chain hoisting method, is convenient for workers to operate, and has a short adjustment time. It is easy to quickly and accurately position, has a simple and compact structure, and is convenient to use locally available materials.

Claims

1. A limiting device for welding steel structures, comprising a long beam (1), a short beam (2), and a hydraulic jack (3), characterized in that: A small steel plate (4) is fixedly welded to the upper flange of the short beam (2), and a large steel plate (5) is fixedly welded to the upper flange of the long beam (1). A connecting box (6) is installed on the large steel plate (5). The interior of the connecting box (6) is hollow and two movable slots (7) are opened on one side. A bidirectional screw (8) is rotatably connected between the two inner side walls of the connecting box (6). Two screw sleeves (9) are threaded on the surface of the bidirectional screw (8). One end of each screw sleeve (9) extends to the outside of the connecting box (6) and is fixedly connected to a clamp (10).

2. The limiting device for welding steel structure according to claim 1, characterized in that: A limiting rod (11) is fixedly connected between the two inner side walls of the connecting box (6). Two limiting sleeves (12) are slidably sleeved on the surface of the limiting rod (11). One end of each of the two limiting sleeves (12) extends to the outside of the connecting box (6) and is fixedly connected to the two clamps (10) respectively. The two screw sleeves (9) and the two limiting sleeves (12) can move inside the two movable slots (7) respectively.

3. The limiting device for welding steel structure according to claim 2, characterized in that: A row of insert rods (13) is fixedly connected to the surface of each of the two clamps (10), and a fixing block (14) is fixedly connected to the bottom of the hydraulic jack (3). A row of slots (15) matching the insert rods (13) is opened on both sides of the fixing block (14).

4. The limiting device for welding steel structure according to claim 3, characterized in that: The large steel plate (5) is in the form of a portal cantilever. One end of the root of the large steel plate (5) is welded to the upper flange of the long beam (1) at the joint. The other end of the head of the large steel plate (5) crosses the small steel plate (4) and keeps the cantilever free.

5. The limiting device for welding steel structure according to claim 4, characterized in that: The large steel plate (5) has mounting grooves (16) on both sides of its interior, and both mounting grooves (16) are matched with the fixing block (14).

6. The limiting device for welding steel structure according to claim 5, characterized in that: The upper and lower surfaces of the connecting box (6) are fixedly connected with mounting plates (17). The surfaces of the two mounting plates (17) and the two sides of the large steel plate (5) are provided with matching threaded holes (18). The connecting box (6) can be connected and installed with the large steel plate (5) using bolts.

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