3Y steel sheet pile welding forming device

Abstract

A 3Y steel sheet pile welding forming device is characterized by being composed of a pre-welding platform and a final welding platform. The pre-welding platform comprises a pre-assembling tool platform (2), and the pre-assembling tool platform (2) is installed on a support (4). A positioning boss (5) for fixing the Y-shaped steel sheet pile (3) is arranged on the preassembling tool platform (2), and a plurality of push-pull type quick clamps (1) with different heights are mounted on the two sides of the positioning boss (5); the two ends of the preassembled body (6) are respectively clamped in two corresponding three-jaw chucks (7), and one three-jaw chuck (7) is connected with a motor (8) for driving the three-jaw chuck (7) to rotate; the other three-jaw chuck (7) is connected with a driven clamp (10), and the driven clamp (10) is rotatably installed on a movable support (11). According to the invention, the urgent need of production is met, the device has the advantages of simple structure, convenience in manufacturing and mounting and capability of greatly improving the production efficiency, and the requirement of batch production of 3Y-shaped steel plates can be met.

Description

Technical Field

[0001] The present invention relates to a steel sheet pile technology, in particular to a production technology of special-shaped steel sheet piles, specifically a welding and forming device method for 3Y steel sheet piles. Background Art

[0002] At present, the steel sheet pile technology, as an efficient and environmentally friendly temporary or permanent support structure, is widely used in civil engineering, water conservancy projects, port construction and other fields. Chinese patents 2010101882260, 201010188228X, 2010101882364, 2010101882398, etc. have comprehensively published the general shapes and preparation methods of existing steel sheets. After decades of development, the main development direction of steel sheet piles is the application of high-strength steel: modern steel sheet piles mostly use high-strength low-alloy steels (such as S355, S420, etc.), which have both high bearing capacity and corrosion resistance. In some special environments, stainless steel or anti-corrosion coatings (such as epoxy coatings, galvanizing) are used. Its forming process is mainly cold bending forming technology. By cold bending process, cross-sections such as U-shaped, Z-shaped, and straight-shaped are produced to improve the bending and shear resistance of the pile body. Laser welding technology can also be used to improve the joint strength. And lightweight design is becoming the development direction of many production enterprises, that is, to minimize the steel consumption under the premise of protecting strength and moment of inertia to achieve green development. At present, the optimized cross-sectional shapes mainly include "hat-shaped" and "box-shaped" cross-sections. Although they partially solve the problems of lightweight, reduced construction difficulty and transportation cost, they still have complex structures, high manufacturing costs, and require the development of special equipment for mass production, making it difficult to be widely promoted. Therefore, the steel sheet pile technology is developing towards high strength, intelligence and greenness, and has great potential in deep-sea engineering, urban underground space development and other fields in the future. However, cost control, adaptability to complex geology and full-life cycle management are still the key points that the industry needs to break through. For this reason, designing a 3Y-shaped steel sheet pile can well solve the above problems, and the 3Y-shaped steel sheet pile is integrally welded and formed by 3 welded Y-shaped steel sheet piles. As Figure 1 shown, since its length usually reaches dozens of meters, ordinary welding means are difficult to meet the production needs and ensure the welding quality, and a numerical control welding manipulator must be used for welding. In order to meet the needs of the numerical control welding manipulator, a corresponding welding tooling must be designed to meet the production needs. Summary of the Invention

[0003] The purpose of the present invention is to design a welding and forming device for 3Y steel sheet piles in view of the problems that the existing steel sheet pile structures are difficult to meet the requirements of lightweight, material saving and high production cost.

[0004] The technical solution of the present invention is as follows: A 3Y steel sheet pile welding and forming device, characterized in that: it consists of a pre-welding platform and a final-welding platform. The pre-welding platform is used to combine three Y-shaped steel sheet piles and perform spot welding to form a pre-assembled body, and the final-welding platform is used to rotate the pre-assembled body to a set angle and complete the final welding using a numerically controlled welding manipulator 12. The pre-welding platform includes a pre-assembly tooling platform 2, and the pre-assembly tooling platform 2 is installed on a bracket 4. The pre-assembly tooling platform 2 is provided with positioning bosses 5 for fixing the Y-shaped steel sheet piles 3, and several push-pull type quick clamps 1 with different heights for fixing the Y-shaped steel sheet piles 3 are installed on both sides of the positioning bosses 5. After the three Y-shaped steel sheet piles 3 are fixed, they are formed into a pre-assembled body 6 by spot welding. The two ends of the pre-assembled body 6 are respectively clamped in the corresponding two three-jaw chucks 7. One three-jaw chuck 7 is connected to a motor 8 that drives its rotation, and the motor 8 is fixed on a fixed bracket 9. The other three-jaw chuck 7 is connected to a passive clamp 10, and the passive clamp 10 is rotatably installed on a moving bracket 11. The moving bracket 11 can move on the bracket platform 13 and be locked in position.

[0005] One push-pull type quick clamp 1 for positioning the end of the Y-shaped steel sheet pile 3 is installed at each end of the positioning boss 5.

[0006] Each time the three-jaw chuck 7 rotates by an angle of 120 degrees, and it rotates three times in total to complete the welding of three fillet welds.

[0007] The output shaft of the motor 8 is directly or indirectly connected to the three-jaw chuck 7.

[0008] The beneficial effects of the present invention: The present invention solves the urgent production need, has the advantages of simple structure, convenient manufacturing and installation, and can greatly improve production efficiency, and can meet the batch production needs of 3Y-shaped steel sheet piles. Description of the drawings

[0009] Figure 1 is a three-dimensional structure schematic diagram of the 3Y-shaped steel sheet pile of the present invention.

[0010] Figure 2 is a structural schematic diagram of the 3Y steel sheet pile welding device of the present invention.

[0011] Figure 3 is Figure 2 the top view of

[0012] Figure 4 is a schematic diagram of the 3Y steel sheet pile assembly and spot welding device of the present invention.

[0013] Figure 5 is a schematic diagram of the installation state of the first Y-shaped steel sheet pile of the present invention on the assembly and spot welding device.

[0014] Figure 6It is a schematic diagram of the installation state of the second Y-shaped steel sheet pile of the present invention on the assembly spot welding device.

[0015] Figure 7 It is a schematic diagram of the installation state of the third Y-shaped steel sheet pile of the present invention on the assembly spot welding device.

[0016] Figure 8 It is a schematic diagram of the state when the fixed chuck rotates to the first welding position of the present invention. Detailed implementation manners

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] As Figure 1 shown.

[0019] A 3Y-shaped steel sheet pile, as Figure 1 shown, is composed of three Y-shaped steel sheet piles combined, and the vertical sides of the three Y-shaped steel sheet piles are welded together at equal angles.

[0020] It should be noted that the equipment and components used in the 3Y-shaped steel sheet pile welding forming device of the present invention can be self-made according to the drawings, directly purchased from the market or customized. Among them, the model of the numerical control welding manipulator 12 can be GLLMH-350, which is a conventional equipment. The horizontal push-pull type quick clamp 1 involved can be designed by itself or directly use the commercially available product with the model of GH-305-HM. The rotatable bracket used in the welding process can be designed or customized according to the requirements of the present invention (using pneumatic drive for clamping and rotation). Similarly, the three-jaw chuck used in the welding process can also be directly purchased from the market or customized, and its function is to hold the welding tooling fixture and drive the rotation. The passive clamp connected to the three-jaw chuck can be designed by itself or directly purchased from the market, and its function is to support the rotation of the three-jaw chuck and axial positioning. The motor can also be connected to the three-jaw chuck through a transition mechanism (such as a reducer) and a support and connection mechanism. Details are as follows:.

[0021] As Figures 2 - 8 shown.

[0022] A 3Y steel sheet pile welding forming device is composed of Figure 4 the pre-welding platform shown and the final welding platform shown in FIGS. 2 and 3. The pre-welding platform is used to combine three Y-shaped steel sheet piles and spot weld them to form a pre-assembled body ( Figure 5 , 6, 7), the final welding platform is used to rotate the pre-assembled body to a set angle and complete the final welding using the numerically controlled welding manipulator 12; the pre-welding platform includes a pre-assembly tooling platform 2, and the pre-assembly tooling platform 2 is installed on the bracket 4; the pre-assembly tooling platform 2 is provided with a positioning boss 5 for fixing the Y-shaped steel sheet pile 3, and several push-pull type quick clamps 1 with different heights for fixing the Y-shaped steel sheet pile 3 are installed on both sides of the positioning boss 5, and a push-pull type quick clamp 1 for positioning the end of the Y-shaped steel sheet pile 3 is installed at each end of the positioning boss 5. After three Y-shaped steel sheet piles 3 are fixed, they are spot-welded to form a pre-assembled body 6, and both ends of the pre-assembled body 6 are respectively clamped in the corresponding two three-jaw chucks 7 (such as Figure 1 , 8 ), one three-jaw chuck 7 is directly or indirectly connected to the motor 8 that drives its rotation. When directly connected, the motor usually uses a stepping motor or a rotary angle motor. When indirectly connected, a speed reducer is added. The motor 8 is fixed on the fixed bracket 9; the other three-jaw chuck 7 is connected to the passive clamp 10, and the passive clamp 10 is rotatably installed on the moving bracket 11, and the moving bracket 11 can move and lock the position on the bracket platform 13. Each time the three-jaw chuck 7 rotates by an angle of 120 degrees (such as Figure 8 ), and it rotates three times to complete the welding of three fillet welds.

[0023] The usage method of the present invention is as follows: The integrally formed Y-shaped structure workpiece 6 formed by spot welding is taken off from the pre-welding platform and sent to the final welding platform. First, two Y-shaped steel sheet piles are respectively fixed on both sides of the inverted V-shaped fixture base with horizontal push-pull type clamps, such as Figure 5 , 6 , the hypotenuse of the Y-shaped steel sheet pile fits with the hypotenuse of the positioning boss 5, and the straight edge of the Y-shaped steel sheet pile fits with the straight edge of the inverted positioning boss 5; Secondly, then use the horizontal push-pull type clamp to clamp the straight edge of the third Y-shaped steel sheet pile, so that the lower part of the straight edge of the third Y-shaped steel sheet pile is located at the highest point of the inverted positioning boss 5 and contacts the top of the hypotenuse of the other two Y-shaped steel sheet piles previously fixed on both sides of the inverted V-shaped fixture base; such as Figure 7 ; Thirdly, use a spot welder to spot-weld the contacting parts of the three Y-shaped steel sheet piles to form a preliminary formed 3Y-shaped steel sheet pile; then clamp the preliminary formed 3Y-shaped steel sheet pile on the three-jaw chuck with power rotation (such as Figure 8 ), rotate the three-jaw chuck to expose the spot-welded weld seam under the welding torch of the gantry-type numerically controlled welding manipulator 12 with the largest field of view. After one spot weld is completed, rotate by a set angle to complete the welding of the second spot weld until all three spot welds are completed to obtain the 3Y-shaped steel sheet pile as shown in Figure 1 .

[0024] Finally, perform subsequent heat treatment and flaw detection on the 3Y-shaped steel sheet piles. For the qualified products, conduct surface treatment, saw cutting to the required length, spray identification, packing, and stacking for subsequent transportation and sales.

[0025] The parts not involved in the present invention are the same as or can be implemented by the prior art.

Claims

1. A 3Y steel sheet pile welding and forming device, characterized in that: It is composed of a pre-welding platform and a final-welding platform. The pre-welding platform is used to combine three Y-shaped steel sheet piles and spot-weld them to form a pre-assembled body. The final-welding platform is used to rotate the pre-assembled body to a set angle and complete the final welding by using a numerically controlled welding manipulator (12). The pre-welding platform includes a pre-assembly tooling platform (2), and the pre-assembly tooling platform (2) is installed on a bracket (4). The pre-assembly tooling platform (2) is provided with positioning bosses (5) for fixing the Y-shaped steel sheet piles (3). On both sides of the positioning bosses (5), a number of push-pull type quick clamps (1) with different heights for fixing the Y-shaped steel sheet piles (3) are installed. After the three Y-shaped steel sheet piles (3) are fixed, they are spot-welded to form a pre-assembled body (6). The two ends of the pre-assembled body (6) are respectively clamped in corresponding two three-jaw chucks (7). One three-jaw chuck (7) is connected to a motor (8) that drives its rotation, and the motor (8) is fixed on a fixed bracket (9). The other three-jaw chuck (7) is connected to a passive clamp (10), and the passive clamp (10) is rotatably installed on a moving bracket (11). The moving bracket (11) can move on a bracket platform (13) and be locked in position.

2. The 3Y steel sheet pile welding and forming device according to claim 1, characterized in that: At both ends of the positioning boss (5), a push-pull type quick clamp (1) for positioning the end of the Y-shaped steel sheet pile (3) is installed respectively.

3. The 3Y steel sheet pile welding and forming device according to claim 1, characterized in that: Each time the three-jaw chuck (7) rotates by 120 degrees and rotates three times in total to complete the welding of three fillet welds.

4. The 3Y steel sheet pile welding and forming device according to claim 1, characterized in that: The output shaft of the motor (8) is directly or indirectly connected to the three-jaw chuck (7).

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