Ground welding platform and welding construction method for chemical variable diameter equipment

Abstract

The present invention relates to the field of welding technology, and discloses a ground welding platform for chemical variable diameter equipment and a welding construction method. The ground welding platform for chemical variable diameter equipment includes an annular welding platform, a welding slide, a radial push plate, a positioning plate, a horizontal push cylinder and a push assembly. A plurality of welding slides are slidably connected on the annular welding platform, and an inner support plate is provided on the upper surface of the welding slide. The radial push plate is radially slidably installed on the welding slide, and a baffle is fixedly provided on the welding slide on the inner side of the radial push plate. The horizontal push cylinder is provided on the outer ground of the annular welding platform, and the push assembly is selectively connected to one of the welding slides. The variable diameter plate is pushed inward by the horizontal push cylinder, and under the action of the lifting assembly, the positioning plate cooperates with the positioning groove to position the radial push plate, and the radial push plate cooperates with the inner support plate to fix the variable diameter plate, thereby improving the operating efficiency of the variable diameter plate welding assembly of the chemical variable diameter equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a ground welding platform for chemical variable diameter equipment and a welding construction method. Background Art

[0002] During the on-site assembly and welding construction process of chemical reducer equipment, the reducer plates that form the chemical reducer equipment need to be hoisted from the transport vehicle to the ground, and then a support frame is erected on the ground to support it. The various reducer plates are placed and assembled and fixed according to the preset positions using a crane, and then the assembled reducer plates are welded.

[0003] Since a single reducer plate is usually large in size, positioning the reducer plate is very time-consuming and labor-intensive, resulting in low efficiency in the welding assembly of chemical reducer equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a ground welding platform and a welding construction method for chemical variable diameter equipment, so as to achieve the purpose of improving the welding efficiency of chemical variable diameter equipment.

[0005] To solve the above technical problems, according to one aspect of the present invention, a ground welding platform for chemical variable diameter equipment is provided, comprising:

[0006] The annular welding platform includes an annular track;

[0007] A plurality of welding slides are slidably connected to the annular welding platform, and an inner support plate is provided on the upper surface of the welding slide for supporting the part above the middle of the reducer plate;

[0008] A radial push plate is radially slidably mounted on the assembly welding slide, an external tension spring is provided between the outer side of the radial push plate and the assembly welding slide, and a baffle is fixedly provided on the assembly welding slide inside the radial push plate;

[0009] The positioning plate is arranged inside the assembly welding slide in a liftable manner, and the bottom of the radial push plate is provided with a positioning groove for inserting the positioning plate;

[0010] The horizontal push cylinder is set on the outer ground of the annular assembly welding platform and is used to push the radial push plate located on the inner side thereof inward;

[0011] The pushing component is selectively connected to one of the welding slides and is used to push the welding slide to move along the annular welding platform.

[0012] Furthermore, the welding slides are sequentially connected or spaced apart on the annular welding platform.

[0013] Further, the pushing component includes a swing arm, a circumferential push plate, and a side push oil cylinder. One end of the circumferential push plate is detachably hinged to the inner side surface of the assembly welding slide table. One end of the swing arm is connected to the circumferential push plate, and the other end of the swing arm is rotatably connected to a shaft column arranged on the inner side ground of the annular assembly welding platform. One end of the side push oil cylinder is hinged to the middle of the swing arm, and the other end of the side push oil cylinder is connected to a fixed seat arranged on the inner side ground of the annular assembly welding platform.

[0014] Further, two radial push plates and two positioning plates are symmetrically arranged.

[0015] Further, it includes a lifting component for controlling the lifting of the positioning plate. The lifting component includes a lifting plate and a lifting spring. A through groove is provided in the middle of the upper surface of the assembly welding slide table. The lifting plate is located in the through groove, and the lifting spring is arranged between the bottom of the lifting plate and the inner bottom wall of the through groove. The bottoms of the two positioning plates are connected by a connecting rod, and the lifting plate is above the connecting rod.

[0016] Further, the extending end of the transverse push oil cylinder is provided with a push rod with an inward opening and a "C" shape. The two ends of the push rod are respectively used to push the two radial push plates.

[0017] Further, a groove is provided on the upper surface of the assembly welding slide table. The outer side surface of the baffle is flush with the inner side of the groove opening. When the reduced-diameter plate is pushed by the radial push plate to be close to the baffle, the bottom of the reduced-diameter plate enters the groove.

[0018] Further, gaps are provided on both sides of the upper surface of the assembly welding slide table.

[0019] Further, a plurality of lifting lugs are evenly spaced on the annular assembly welding platform.

[0020] According to another aspect of the present invention, a method for ground assembly welding of a chemical process reduced-diameter equipment is provided. Using the above-mentioned ground assembly welding platform for chemical process reduced-diameter equipment, it includes the following steps:

[0021] Step 1: Lift the first reduced-diameter plate to the assembly welding slide table opposite to the transverse push oil cylinder, and push the first reduced-diameter plate by the transverse push oil cylinder until it touches the baffle.

[0022] Step 2: Connect the pushing component to the next assembly welding slide table, push the assembly welding slide table to the position opposite to the transverse push oil cylinder by the pushing component, then lift the second reduced-diameter plate to the assembly welding slide table, and continue to push the second reduced-diameter plate by the transverse push oil cylinder until it touches the baffle.

[0023] Step 3: Repeat Step 2, place the remaining reduced-diameter plates on the corresponding assembly welding slide tables, weld the longitudinal welds between adjacent reduced-diameter plates, and complete the ground prefabrication and assembly welding of the reduced-diameter equipment.

[0024] Step 4: After welding is completed, connect the slings to the annular welding platform and use the lifting equipment to transfer the ground welding platform of the chemical reducer equipment and the welded reducer equipment as a whole.

[0025] According to the technical solution provided by the present invention, a push assembly is provided to push the welding slide to move on the annular welding platform, so that each welding slide can be moved in sequence to a position facing the horizontal push cylinder, and each reducer plate is placed on the welding slide facing the horizontal push cylinder. Then, the reducer plate is pushed inward by the horizontal push cylinder. Under the action of the lifting assembly, the positioning plate cooperates with the positioning groove to position the radial push plate, and the radial push plate cooperates with the inner support plate to fix the reducer plate, thereby improving the operating efficiency when welding the reducer plates of the chemical reducer equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are used to provide further illustration of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 It is a structural diagram of the reducing plate when it is welded together;

[0028] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0029] Figure 3 This is a structural diagram of the connection between the horizontal thrust cylinder and the radial thrust plate;

[0030] Figure 4 It is a structural diagram of the lifting component.

[0031] In the figure, 1-annular welded platform, 2-welded slide, 3-inner support plate, 4-radial push plate, 5-external tension spring, 6-baffle, 7-positioning plate, 8-positioning groove, 9-transverse push cylinder, 10-pushing assembly, 11-lifting assembly, 12-through groove, 13-push rod, 14-groove, 15-notch, 16-reducing plate.

[0032] 10-1-swing arm, 10-2-circumferential push plate, 10-3-side thrust cylinder, 10-4-axle column, 11-1-lifting plate, 11-2-lifting spring. DETAILED DESCRIPTION

[0033] In order to make those skilled in the art better understand the present invention, the present invention is further clearly and completely described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless there is a conflict, the features in the embodiments and examples of this application can be combined with each other.

[0034] The reducing plate 16 described in this embodiment refers to a component prefabricated in advance according to the shape and size of the chemical reducing equipment. The chemical reducing equipment is formed by flat welding a plurality of reducing plates 16 .

[0035] A typical embodiment of the present invention provides a ground welding platform for chemical variable diameter equipment, referring to Figures 1 to 4 It is mainly composed of an annular welding platform 1, a welding slide 2, a radial push plate 4, a baffle 6, a positioning plate 7, a horizontal push cylinder 9 and a push assembly 10.

[0036] As shown in Figure 1, the main structure of the annular welding platform 1 is a circular track. Multiple welding slides 2 are slidably connected to the annular welding platform 1. These welding slides 2 are arranged sequentially or at intervals on the annular welding platform 1. Slide grooves or rollers that are compatible with the annular track are provided at the bottom of the welding slides 2 to achieve the sliding connection between the welding slides 2 and the annular welding platform 1.

[0037] like Figure 1 、 Figure 3 As shown, the upper surface of each welding slide 2 is provided with an inner support plate 3, which is used to support the upper middle portion of the inner side of the variable diameter plate 16. The height of the inner support plate 3 can be fixed or adjustable.

[0038] The radial push plate 4 is installed on each welding slide 2 in a radially sliding manner along the annular track. Figure 3 As shown, an external tension spring 5 is provided between the outer side surface of the radial push plate 4 and the welding slide 2, and a baffle 6 is fixedly provided on the welding slide 2 inside the radial push plate 4, and the baffle 6 is used to support the bottom inside the diameter reducing plate 16.

[0039] The positioning plate 7 is arranged inside the welding slide 2 in a liftable manner. Figure 4 As shown, the bottom of the radial push plate 4 is provided with a positioning groove 8 for inserting the positioning plate 7. When the radial push plate 4 pushes the reducing plate 16 to the position of the baffle 6, the positioning plate 7 can be inserted upward into the positioning groove 8, so that the radial push plate 4 is stably supported on the bottom outside the reducing plate 16.

[0040] like Figure 1 As shown, the horizontal push cylinder 9 is arranged on the outer ground of the annular welding platform 1, and is used to push the radial push plate 4 on the welding slide 2 located on the inner side thereof inward.

[0041] like Figure 1 As shown, the pushing assembly 10 is selectively connected to one of the welding slides 2 to push the welding slide 2 to move along the annular welding platform 1 .

[0042] According to the above embodiments, the annular welding platform 1 serves as the foundation for the combination of the reduced-diameter plates 16 to form a chemical reduced-diameter device. The number of welding slides 2 corresponds to the number of reduced-diameter plates 16 that make up the chemical reduced-diameter device. The inner support plate 3 is used to support the inner side surfaces of the reduced-diameter plates 16 standing on the welding slides 2, so as to improve the stability during the combination of the reduced-diameter plates 16. The baffle 6 and the radial push plate 4 respectively position and support the reduced-diameter plates 16 from both sides at the bottom of the reduced-diameter plates 16.

[0043] The reduced-diameter plate 16 is placed on the upper surface of the welding slide 2 by hoisting. When the transverse push oil cylinder 9 pushes the reduced-diameter plate 16 to move on the surface of the welding slide 2, the outer pull spring 5 will be stretched during the process that the radial push plate 4 pushes the reduced-diameter plate 16 inward. When the reduced-diameter plate 16 is pushed to the innermost limit position, the inner surface of the reduced-diameter plate 16 fits against the outer surface of the baffle 6. At this time, the positioning plate 7 is moved upward and inserted into the positioning groove 8 to position the radial push plate 4. The baffle 6 cooperates with the radial push plate 4 to clamp the bottom of the reduced-diameter plate 16 from both the inside and the outside, so that the reduced-diameter plate 16 is stable in the combined state.

[0044] The pushing component 10 can push all the welding slides 2 to slide on the annular welding platform 1, and can push the next idle welding slide 2 to the position directly opposite to the extending end of the transverse push oil cylinder 10. The transverse push oil cylinder 10 can successively push the reduced-diameter plates 16 on all the welding slides 2 to the correct combined state. When all the reduced-diameter plates 16 are moved to the set positions, a closed chemical reduced-diameter device is preliminarily formed, and then the butt welding between all the reduced-diameter plates 16 can be carried out.

[0045] In a preferred embodiment, as Figure 1 and Figure 2 shown, the pushing component 10 includes a swing arm 10-1, a circumferential push plate 10-2 and a side push oil cylinder 10-3. One end of the circumferential push plate 10-2 is detachably hinged to the inner side surface of the welding slide 2. One end of the swing arm 10-1 is connected to the circumferential push plate 10-2, and the other end of the swing arm 10-1 is rotatably connected to a shaft column 10-4 arranged on the inner side ground of the annular welding platform 1; one end of the side push oil cylinder 10-3 is hinged to the middle of the swing arm 10-1, and the other end of the side push oil cylinder 10-3 is connected to a fixed seat arranged on the inner side ground of the annular welding platform 1.

[0046] In a relatively specific embodiment, as Figure 3 shown, two radial push plates 4 and two positioning plates 7 are symmetrically arranged. Such an arrangement can improve the stability when the reduced-diameter plate 16 is pushed and better maintain the shape of the reduced-diameter plate 16. On this basis, the extending end of the transverse push oil cylinder 9 is provided with a push rod 13 with an inward-facing open end and in a "C" shape, and both ends of the push rod 13 are respectively used to push the two radial push plates 4.

[0047] In a preferred embodiment, a lifting assembly 11 is included for controlling the lifting of the positioning plate 7, such as Figure 4 As shown, the lifting assembly includes a lifting plate 11-1 and a lifting spring 11-2. In this embodiment, the lifting plate 11-1 is a "U"-shaped structure with an open end facing inward, including two side edges distributed up and down, and the upper side edge is shorter than the lower side edge.

[0048] A through slot 12 is provided in the middle of the upper surface of the assembly welding slide 2, and the lifting plate 11-1 is located in the through slot 12, and the lifting spring 11-2 is provided between the bottom of the lifting plate 11-1 and the inner bottom wall of the through slot 12. The bottoms of the two positioning plates 7 are connected by a connecting rod, and the lifting plate 11-1 is on the upper part of the connecting rod. A receiving slot capable of accommodating the positioning plate 7 and the connecting rod is provided inside the assembly welding slide 2, and the receiving slot is arranged perpendicular to the through slot 12. In this embodiment, before the radial push plate 4 moves inward to contact the positioning plate 7, the lifting plate 11-1 will be pressed down by the reducing plate 16 pushed by the radial push plate 4 to a state where the top is flush with the upper surface of the assembly welding slide 2. When the radial push plate 4 pushes the reducing plate 16 to a state of being in contact with the baffle 6, the top of the lifting plate 11-1 is separated from the bottom of the reducing plate 16.

[0049] According to this embodiment, when the reducing plate 16 is pushed inward by the radial push plate 4, the bottom of the reducing plate 16 passes the outer end of the lifting plate 11-1, pressing the lifting plate 11-1 downward, causing the positioning plate 7 to descend in the height direction to below the radial push plate 4. At this time, the lifting spring 11-2 is compressed. When the reducing plate 16 is pushed to contact the baffle 6, the bottom of the reducing plate 16 disengages from the inner end of the upper side of the lifting plate 11-1. The lifting plate 11-1 is reset upward by the lifting spring 11-2, driving the positioning plate 7 to insert into the positioning slot 8 and position the radial push plate 4.

[0050] In another preferred embodiment, a groove 14 is provided on the upper surface of the assembly welding slide 2, and the outer side surface of the baffle 6 is flush with the inner side of the notch of the groove 14. When the reducing plate 16 is pushed by the radial push plate 4 to be close to the baffle 6, the bottom of the reducing plate 16 enters the groove 14. The groove 14 can improve the stability of the reducing plate 16.

[0051] During the welding construction, the portion of the longitudinal weld within the depth range of the groove 14 will be blocked. Therefore, notches 15 can be opened on both sides of the upper surface of the assembly welding slide 2 corresponding to the end positions of the groove 14 so that the welding gun can enter the notch 15 for welding.

[0052] After the assembly welding is completed, the chemical reducer needs to be transferred to the formal installation site. If the chemical reducer is lifted separately, the cross support frame must be welded and fixed inside the chemical reducer first, which will damage the overall structure of the chemical reducer. In addition, since the cross support frame is only supported on part of the reducer plate, it is possible that local stress is excessive during the transfer process, causing damage to the reducer plate.

[0053] In this embodiment, a plurality of lifting ears are evenly spaced on the annular welding platform 1. After welding is completed, slings are connected to the lifting ears, so that the ground welding platform of the chemical variable diameter equipment and the welded variable diameter equipment can be transferred as a whole, avoiding damage to the variable diameter equipment during the transfer process.

[0054] Another typical embodiment of the present invention provides a ground welding method for chemical variable diameter equipment, which uses the ground welding platform for chemical variable diameter equipment described in the above embodiment, including the following steps:

[0055] Step 1: Lift the first reducing plate 16 onto the welding slide 2 facing the horizontal push cylinder 9, and use the horizontal push cylinder 9 to push the first reducing plate 16 until it contacts the baffle 6;

[0056] Step 2: Connect the annular push plate 10-2 of the push assembly 10 to the next welding slide 2. Use the push assembly 10 to push the welding slide 2 to a position facing the horizontal push cylinder 9. Then, hoist the second reducing plate 16 onto the welding slide 2. Continue to use the horizontal push cylinder 9 to push the second reducing plate 16 until it contacts the baffle 6.

[0057] Step 3: Repeat step 2 to place the remaining reducing plates 16 on the corresponding welding slides 2, weld the longitudinal welds between adjacent reducing plates 16, and complete the ground prefabrication welding of the reducing equipment;

[0058] Step 4: After welding is completed, connect the slings to the annular welding platform 1 and use the lifting equipment to transfer the chemical reducer equipment ground welding platform and the welded reducer equipment as a whole.

[0059] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various variations and modifications. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ground welding platform for chemical variable diameter equipment, characterized in that: Comprising: A circular group welding platform (1), including a circular track; Group welding sliders (2), multiple group welding sliders (2) are slidably connected to the circular group welding platform (1), and an inner support plate (3) for supporting above the middle part of the reduced-diameter plate (16) is arranged on the upper surface of the group welding slider (2); A radial push plate (4) is slidably installed along the radial direction on the group welding slider (2), an outer pull spring (5) is arranged between the outer side of the radial push plate (4) and the group welding slider (2), and a baffle (6) is fixedly arranged on the group welding slider (2) inside the radial push plate (4); A positioning plate (7) is arranged in the group welding slider (2) in a liftable manner, and a positioning groove (8) for the positioning plate (7) to insert is arranged at the bottom of the radial push plate (4); A transverse push oil cylinder (9) is arranged on the ground outside the circular group welding platform (1) and is used to push the radial push plate (4) inside it inward; A pushing component (10) is selectively connected to one of the group welding sliders (2) and is used to push the group welding slider (2) to move along the circular group welding platform (1); A lifting component (11) for controlling the lifting of the positioning plate (7), the lifting component includes a lifting plate (11-1) and a lifting spring (11-2), a through groove (12) is arranged in the middle of the upper surface of the group welding slider (2), the lifting plate (11-1) is located in the through groove (12), and the lifting spring (11-2) is arranged between the bottom of the lifting plate (11-1) and the inner bottom wall of the through groove (12); the bottoms of the two positioning plates (7) are connected by a connecting rod, and the lifting plate (11-1) is above the connecting rod.

2. The ground welding platform for chemical variable diameter equipment according to claim 1 is characterized in that: The group welding sliders (2) are arranged in sequence or at intervals on the circular group welding platform (1).

3. The ground welding platform for chemical variable diameter equipment according to claim 1 or 2, characterized in that: The pushing component (10) includes a swing arm (10-1), a circumferential push plate (10-2) and a side push oil cylinder (10-3), one end of the circumferential push plate (10-2) is detachably hinged to the inner side surface of the group welding slider (2), one end of the swing arm (10-1) is connected to the circumferential push plate (10-2), and the other end of the swing arm (10-1) is rotatably connected to a shaft column (10-4) arranged on the ground inside the circular group welding platform (1); one end of the side push oil cylinder (10-3) is hinged to the middle of the swing arm (10-1), and the other end of the side push oil cylinder (10-3) is connected to a fixed seat arranged on the ground inside the circular group welding platform (1).

4. The ground welding platform for chemical variable diameter equipment according to claim 3 is characterized in that: Two radial push plates (4) and two positioning plates (7) are symmetrically arranged.

5. The ground welding platform for chemical variable diameter equipment according to claim 4, characterized in that: The extending end of the transverse push oil cylinder (9) is provided with a push rod (13) with an inward-facing open end and in a "C" shape, and the two ends of the push rod (13) are respectively used to push the two radial push plates (4).

6. The ground welding platform for chemical variable diameter equipment according to claim 5, characterized in that: A groove (14) is arranged on the upper surface of the group welding slider (2), the outer side surface of the baffle (6) is flush with the inner side of the notch of the groove (14), when the reduced-diameter plate (16) is pushed by the radial push plate (4) to be closely attached to the baffle (6), the bottom of the reduced-diameter plate (16) enters the groove (14).

7. The ground welding platform for chemical variable diameter equipment according to claim 6, characterized in that: Notches (15) are arranged on both sides of the upper surface of the group welding slider (2).

8. The ground welding platform for chemical variable diameter equipment according to claim 1 or 7, characterized in that: A plurality of lifting lugs are evenly arranged at intervals on the circular group welding platform (1).

9. A ground welding method for chemical variable diameter equipment, characterized in that: The ground welding platform for chemical variable diameter equipment according to any one of claims 1 to 8 is used, comprising the following steps: Step 1: hoist the first reducing plate (16) onto the assembly welding slide (2) facing the horizontal push cylinder (9), and use the horizontal push cylinder (9) to push the first reducing plate (16) until it contacts the baffle (6); Step 2: Connect the push assembly (10) to the next welding slide (2), push the welding slide (2) to a position facing the horizontal push cylinder (9) by the push assembly (10), then hoist the second reducing plate (16) onto the welding slide (2), and continue to push the second reducing plate (16) by the horizontal push cylinder (9) until it contacts the baffle (6); Step 3, repeating step 2, placing the remaining reducing plates (16) on the corresponding welding slides (2), welding the longitudinal welds between adjacent reducing plates (16), and completing the ground prefabrication welding of the reducing equipment; Step 4: After the welding is completed, a sling is connected to the annular welding platform (1), and the ground welding platform of the chemical variable diameter equipment and the welded variable diameter equipment are transferred as a whole using a lifting device.

Images