Steel plate concrete wallboard welding auxiliary device

Abstract

The steel plate concrete wallboard welding auxiliary device comprises an upper mold, a lower mold and a plurality of supporting piers, the upper mold comprises an upper mold plate, the lower surface of the upper mold plate is a first fixing face, and an upper observation hole plate is arranged on the upper surface of the upper mold plate; the lower die comprises a lower die plate, the upper surface of the lower die plate is a second fixing face, a lower observation hole plate is arranged on the lower surface of the lower die plate, a fixing structure used for fixing a wall panel of the steel plate concrete wallboard is arranged on the first fixing face, and a fixing structure used for fixing a wall bottom plate of the steel plate concrete wallboard is arranged on the second fixing face. A plurality of operation holes are formed in the lower die plate and the upper die plate and correspond to welding penetrating holes in a wall bottom plate and a wall panel in a one-to-one mode, observation receding holes are further formed in the upper observation hole plate and the lower observation hole plate, connecting pieces are further arranged on the side face of the upper die plate and the side face of the lower die plate, and the welding quality of steel plate concrete wall panel welding can be better guaranteed through the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding technology, in particular to a steel plate concrete wall plate welding auxiliary device. BACKGROUND

[0002] In the process of nuclear power plant construction, a large number of steel plate concrete wall plates need to be made, and the steel plate concrete wall plate mainly includes a wall bottom plate and a wall surface plate, the wall bottom plate and the wall surface plate are arranged in parallel, a plurality of welding holes are arranged on the wall bottom plate and the wall surface plate, a threaded steel bar is inserted into each welding hole and welded with the wall bottom plate and the wall surface plate, and studs are welded on the opposite surfaces of the wall bottom plate and the wall surface plate. Then, the space between the wall bottom plate and the wall surface plate is poured with concrete, and finally a wall plate of a steel plate concrete structure is formed. The wall plate is used in the construction of the nuclear power plant, and a whole wall is formed by assembling a plurality of wall plates. Therefore, the flatness of the wall plate is required to be very high. If the wall plate is not flat, the two wall plates will be misaligned when assembled, which will result in the inability to weld. Therefore, the parallelism between the wall bottom plate and the wall surface plate needs to be ensured during the welding and forming of the above-mentioned steel plate concrete wall plate.

[0003] However, the current welding auxiliary device has a relatively simple structure. After the warping deformation caused by the welding of the studs on the wall bottom plate and the wall surface plate is cold straightened, the wall bottom plate and the wall surface plate are assembled at the construction site. During the assembly, a plurality of support piers are supported between the wall bottom plate and the wall surface plate, the studs have been welded on the wall bottom plate and the wall surface plate, then a connecting strip is welded on the side edges of the wall bottom plate and the wall surface plate to connect the two into one, then the threaded steel bars are inserted into the welding holes and welded with the wall bottom plate and the wall surface plate. After the welding is completed, the connecting strip and the support piers are disassembled. However, the welding auxiliary device has the following disadvantages: 1. The current support piers are directly supported by metal blocks. After the welding is completed, the support piers are knocked out by knocking. The operation is relatively complex, especially the welding of the threaded steel bars will generate a pulling force to reduce the distance between the wall bottom plate and the wall surface plate, so it is more difficult to knock out the metal blocks; 2. The connecting strip needs to be welded with the side edges of the wall bottom plate and the wall surface plate, which is easy to cause local deformation of the wall surface plate and the wall bottom plate during welding; 3. There is a lot of high-altitude operation, which has a high safety risk; and 4. There are a large number of steel supports to ensure the stability of the above-mentioned large-size steel plate wall, which requires a large amount of materials and labor. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a steel plate concrete wall plate welding auxiliary device, which can better ensure the welding quality of the steel plate concrete wall plate.

[0005] In order to solve the above technical problems, the technical scheme of the present application is as follows: a steel plate concrete wall plate welding auxiliary device, comprising an upper mold, a lower mold and a plurality of supporting piers; the upper mold comprises an upper mold plate, the lower surface of the upper mold plate is a first fixed surface, and the upper surface of the upper mold plate is provided with an upper observation hole plate; the lower mold comprises a lower mold plate, the upper surface of the lower mold plate is a second fixed surface, and the lower surface of the lower mold plate is provided with a lower observation hole plate; the first fixed surface is provided with a fixed structure for fixing the wall panel of the steel plate concrete wall plate, and the second fixed surface is provided with a fixed structure for fixing the wall bottom plate of the steel plate concrete wall plate; a plurality of operation holes for facilitating welding operation are arranged on the lower mold plate and the upper mold plate, the operation holes correspond one-to-one to the welding through holes on the wall bottom plate and the wall panel, the upper observation hole plate and the lower observation hole plate are further provided with observation avoidance holes corresponding one-to-one to the operation holes, the size of the operation holes is greater than the size of the welding through holes, the size of the observation avoidance holes is greater than the size of the operation holes, and the side surfaces of the upper mold plate and the lower mold plate are further provided with connecting pieces for welding the upper mold plate and the lower mold plate into one body.

[0006] As a preferred scheme, the fixed structure on the first fixed surface comprises four positioning blocks and a plurality of C-shaped locking blocks, the positioning blocks are L-shaped and are welded and fixed on the first fixed surface, the four positioning blocks are respectively located at four corners to form a positioning area for positioning the wall panel, the locking blocks are respectively fixed on the first fixed surface and are distributed around the positioning area, the locking blocks are arranged on the first fixed surface at the edges of the wall panel, wedge-shaped locking plates are inserted into the locking blocks, and the wedge-shaped locking plates press and fix the wall panel; the fixed structure on the second fixed surface is the same as the fixed structure on the first fixed surface.

[0007] As a preferred scheme, the operation holes and the observation avoidance holes are coaxially arranged one-to-one, and the operation holes are conical holes.

[0008] As a preferred scheme, the upper surface of the upper mold plate is provided with a plurality of parallel upper rib plates connected with the upper observation hole plate, and the upper rib plates are perpendicular to the upper observation hole plate and the upper mold plate; the lower surface of the lower mold plate is connected with the lower observation hole plate through a plurality of parallel lower rib plates, and the lower rib plates are perpendicular to the lower observation hole plate and the lower mold plate.

[0009] As a preferred scheme, the supporting pier comprises a base, a fixed supporting plate is fixed to the upper end of the base, a first inclined surface is arranged at the upper end of the fixed supporting plate, a movable wedge-shaped plate is arranged at the upper end of the fixed supporting plate, a second inclined surface matched with the first inclined surface is arranged at the lower end of the movable wedge-shaped plate, the upper end surface of the movable wedge-shaped plate is arranged as a horizontal supporting surface, the lower end surface of the base is parallel to the horizontal supporting surface, a through hole is further arranged on the side wall of the base, an operation slot is arranged on the movable wedge-shaped plate, a force applying slot wall corresponding to the through hole is arranged on the operation slot, an avoiding communication hole is arranged on the fixed supporting plate to communicate the through hole and the operation slot, and a limiting structure limiting the sliding of the movable wedge-shaped plate is further detachably arranged between the fixed supporting plate and the movable wedge-shaped plate. The locking structure can be used to quickly place the whole supporting pier at a specified position during installation.

[0010] As a preferred scheme, the limiting structure comprises a limiting pin, a semicircular insertion hole half slot is arranged between the first inclined surface and the second inclined surface, the insertion hole half slots are matched with each other to form an insertion hole, the limiting pin is inserted into the insertion hole, the limiting pin is partially exposed outside the insertion hole, and the exposed part of the limiting pin is provided with a pulling hole.

[0011] As a preferred scheme, the operation slot is a triangular slot, and the force applying slot wall is vertically arranged.

[0012] As a preferred scheme, the through hole and the avoiding communication hole are both inclined through oblique holes, and the oblique holes are positionally matched with the inclined slot walls of the triangular operation slot.

[0013] As a preferred scheme, the locking structure is further arranged between the base and the movable wedge-shaped plate to lock the movable wedge-shaped plate, the locking structure comprises a locking hook rotatably arranged on the side of the base, and a locking pin matched with the locking hook is further arranged on the side wall of the movable wedge-shaped plate.

[0014] The effect of the steel plate concrete wall plate welding auxiliary device is that: the steel plate concrete wall plate welding auxiliary device comprises an upper mold, a lower mold and a plurality of supporting piers, the upper mold comprises an upper mold plate, the lower surface of the upper mold plate is a first fixed surface, and the upper surface of the upper mold plate is provided with an upper observation hole plate; the lower mold comprises a lower mold plate, the upper surface of the lower mold plate is a second fixed surface, and the lower surface of the lower mold plate is provided with a lower observation hole plate; the first fixed surface is provided with a fixing structure for fixing a wall surface plate of the steel plate concrete wall plate, and the second fixed surface is provided with a fixing structure for fixing a wall bottom plate of the steel plate concrete wall plate; a plurality of operation holes for facilitating welding operation are arranged on the lower mold plate and the upper mold plate, the operation holes correspond to welding through holes on the wall bottom plate and the wall surface plate in a one-to-one manner, the upper observation hole plate and the lower observation hole plate are further provided with observation avoiding holes corresponding to the operation holes in a one-to-one manner, the size of the operation holes is greater than that of the welding through holes, the size of the observation avoiding holes is greater than that of the operation holes, and the side surfaces of the upper mold plate and the lower mold plate are further provided with connecting pieces for welding the upper mold plate and the lower mold plate into an integrated body, so that the welding auxiliary device has the following advantages compared with the existing structure: 1, the welding auxiliary device adopts the upper mold and the lower mold to fix the wall surface plate and the wall bottom plate, and directly fixes the upper mold plate and the lower mold plate by using the connecting pieces, so that the welding between the connecting pieces and the wall surface plate and the wall bottom plate is reduced, and the welding deformation is reduced. At the same time, the cold straightening process caused by the warping deformation of the wall bottom plate and the wall surface plate caused by the welding studs is avoided; 2, the upper mold and the lower mold are used to press in the upward direction and then welded into an integrated body, so that the upper mold plate and the lower mold plate are more flat and better extruded on the supporting piers, and the deformation of the threaded steel bars during welding is also reduced; 3, the threaded steel bars can be inserted into the operation holes and the observation avoiding holes, and then welded in the threaded steel bars in the operation holes and the observation avoiding holes, so that the operation is more convenient, and the welding deformation is reduced as much as possible because the upper mold plate and the lower mold plate are tightly pressed on the wall surface plate and the wall bottom plate during welding; 4, a large amount of welding work can be completed in the workshop, and a good welding environment can improve the quality of the welded products; 5, the risk of high-altitude operation is greatly reduced; 6, the steel plate wall structure assembly welding production efficiency is high when the mold is used; 7, the steel plate wall assembly welding is carried out in the workshop, the operation area is wide, and it is beneficial to the use of large equipment such as a gantry crane, so that the production efficiency is greatly improved compared with the construction in the field environment.

[0015] Further, the fixing structure on the first fixing surface comprises four positioning blocks and several C-shaped locking blocks, the positioning blocks are L-shaped and welded on the first fixing surface, the four positioning blocks are respectively located at four corners to form a positioning area for positioning the wall panel, the locking blocks are respectively fixed on the first fixing surface and distributed around the positioning area, the locking blocks are arranged on the first fixing surface at the edges of the wall panel, a wedge-shaped locking plate is inserted into the locking blocks, the wedge-shaped locking plate tightly presses and fixes the wall panel, and the fixing structure on the second fixing surface is the same as that on the first fixing surface. Therefore, the wall panel and the wall base plate can be tightly fixed by the fixing structure, welding of the wall base plate and the wall panel during fixing is reduced as much as possible, and local deformation caused by welding is reduced. Meanwhile, the warping deformation caused by welding of the wall base plate and the wall panel can be avoided.

[0016] Further, the operation hole and the observation avoiding hole are coaxially arranged one by one, and the operation hole is a tapered hole. Therefore, the operation hole and the observation avoiding hole are coaxially arranged one by one, which can better correspond to the welding perforations on the wall base plate and the wall panel. Meanwhile, the operation hole is a tapered hole, so that when the threaded steel bar is inserted, the groove required to be welded between the threaded steel bar and the welding perforation can be more exposed, and the field of view is wider, thereby facilitating operation.

[0017] Further, the support pier comprises a base, a fixed support plate is fixed to the upper end of the base, a first inclined surface is arranged at the upper end of the fixed support plate, a movable wedge-shaped plate is arranged at the upper end of the fixed support plate, a second inclined surface matched with the first inclined surface is arranged at the lower end of the movable wedge-shaped plate, the upper end surface of the movable wedge-shaped plate is arranged as a horizontal support surface, the lower end surface of the base is parallel to the horizontal support surface, a through hole is further arranged on the side wall of the base, an operation groove is arranged on the movable wedge-shaped plate, a force applying groove wall corresponding to the through hole is arranged on the operation groove, an avoiding communication hole for connecting the through hole and the operation groove is arranged on the fixed support plate, and a limiting structure for limiting sliding of the movable wedge-shaped plate is further detachably arranged between the fixed support plate and the movable wedge-shaped plate. Therefore, the horizontal support surface on the movable wedge-shaped plate supports the bottom of the wall panel during normal support, and when disassembly is required, a push rod is directly inserted into the operation groove through the through hole and the avoiding communication hole and is pushed against the force applying groove wall, so that the movable wedge-shaped plate is slid by pushing, and the loosened movable wedge-shaped plate descends along the first inclined surface and is separated from the wall panel. Therefore, the support pier is easier to disassemble.

[0018] Further, the operation groove is a triangular groove, and the force applying groove wall is vertically arranged. Therefore, the horizontal component force applied to the force applying groove wall is larger and more labor-saving.

[0019] And since the through hole and the avoiding communication hole are both inclined through holes, the inclined through hole and the avoiding communication hole can play a certain guiding role when the push rod is inserted, so that the push rod is more accurately inserted into the operation groove.

[0020] And since the base and the movable wedge-shaped plate are further provided with a locking structure for locking the movable wedge-shaped plate, the locking structure comprises a locking hook rotatably installed on the side surface of the base, and the side wall of the movable wedge-shaped plate is further provided with a locking pin matched with the locking hook, since a plurality of sets of support piers are needed during welding, and the movable wedge-shaped plate and the fixed support plate of each set of support piers are precisely machined and matched one by one, if mixed use may cause inaccurate cooperation of the movable wedge-shaped plate and the fixed support plate, therefore, the corresponding movable wedge-shaped plate and fixed support plate of each set can be locked by the locking structure to avoid confusion. The locking structure can quickly place the entire support pier in the specified position during installation, and can lock the movable wedge-shaped plate and the base together for convenient storage and management when not in use. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below in combination with the drawings and examples.

[0022] Figure 1 is a structural schematic diagram of an embodiment of the application;

[0023] Figure 2 is a structural schematic diagram of another angle of an embodiment of the application;

[0024] Figure 3 is a front view of an embodiment of the application;

[0025] Figure 4 is a structural schematic diagram of a lower mold of an embodiment of the application;

[0026] Figure 5 is a structural schematic diagram of an upper mold of an embodiment of the application;

[0027] Figure 6 is a structural schematic diagram of a support pier of an embodiment of the application;

[0028] Figure 7 is a top view of a support pier of an embodiment of the application;

[0029] Figure 8 is Figure 7 is a structural sectional view along A-A;

[0030] Figure 9 is a structural schematic diagram of a support pier in a use state of an embodiment of the application;

[0031] Figure 10 is Figure 4Enlarged view of the structure at point I;

[0032] In the attached diagram: 1. Upper mold; 11. Upper template; 12. Operating hole; 13. Upper observation hole plate; 14. Locking block; 15. Positioning block; 16. Wedge-shaped locking plate; 17. Upper stiffening plate; 2. Lower mold; 21. Lower template; 22. Second fixed surface; 23. Lower observation hole plate; 24. Observation clearance hole; 25. Lower stiffening plate; 3. Support pier; 31. Base; 32. Fixed support plate; 321. First inclined surface; 322. Clearance connecting hole; 33. Movable wedge plate; 331. Horizontal support surface; 332. Operating groove; 3321. Force application groove wall; 3322. Inclined groove wall; 34. Through hole; 35. Limiting pin; 36. Insertion hole; 37. Pull hole; 38. Locking hook; 39. Locking pin; 4. Wall panel; 5. Wall base plate; 6. Threaded steel bar; 7. Stud; 8. Push rod. Detailed Implementation

[0033] The present invention will be further described in detail below through specific embodiments.

[0034] like Figures 1-10 As shown, a welding auxiliary device for steel-concrete wall panels includes an upper mold 1, a lower mold 2, and several support blocks 3. The upper mold 1 includes an upper template 11, the lower surface of which is a first fixing surface, and an upper observation hole plate 13 is provided on the upper surface of the upper template 11. The lower mold 2 includes a lower template 21, the upper surface of which is a second fixing surface 22, and a lower observation hole plate 23 is provided on the lower surface of the lower template 21. The first fixing surface is provided with a fixing structure for fixing the wall panel 4 of the steel-concrete wall panel, and the second fixing surface 22 is provided with a fixing structure for fixing the wall panel 4 of the steel-concrete wall panel. The fixing structure of the wall base plate 5 of the fixed steel plate concrete wall panel includes several operation holes 12 on the lower template 21 and the upper template 11 for convenient welding operations. The operation holes 12 correspond one-to-one with the welding through holes on the wall base plate 5 and the wall panel 4. The upper observation hole plate 13 and the lower observation hole plate 23 are also provided with observation avoidance holes 24 that correspond one-to-one with the operation holes 12. The size of the operation holes 12 is larger than the size of the welding through holes, and the size of the observation avoidance holes 24 is larger than the size of the operation holes 12. The sides of the upper template 11 and the lower template 21 are also provided with connectors that weld the two together.

[0035] The operation hole 12 and the observation avoiding hole 24 are coaxial and correspond to each other in the embodiment. The operation hole 12 is a tapered hole. The fixing structure on the first fixing surface includes four positioning blocks 15 and several C-shaped locking blocks 14. The positioning blocks 15 are L-shaped and are welded and fixed on the first fixing surface. The four positioning blocks 15 are respectively located at four corners to form a positioning area for positioning the wall panel 4. The locking blocks 14 are respectively fixed on the first fixing surface and are distributed around the positioning area. The locking blocks 14 are arranged on the first fixing surface at the side edge of the wall panel 4. A wedge-shaped locking plate 16 is inserted into the locking block 14. The wedge-shaped locking plate 16 tightly fixes the wall panel 4. The fixing structure on the second fixing surface 22 is the same as that on the first fixing surface.

[0036] The upper surface of the upper mold plate 11 is provided with several parallel upper rib plates 17 connected with the upper observation hole plate 13. The upper rib plates 17 are perpendicular to the upper observation hole plate 13 and the upper mold plate 11. The lower surface of the lower mold plate 21 is provided with several parallel lower rib plates 25 connected with the lower observation hole plate 23. The lower rib plates 25 are perpendicular to the lower observation hole plate 23 and the lower mold plate 21.

[0037] In the embodiment, the supporting pier 3 includes a base 31. The upper end of the base 31 is fixed with a fixed supporting plate 32. The upper end of the fixed supporting plate 32 is provided with a first inclined surface 321. The upper end of the fixed supporting plate 32 is provided with a movable wedge-shaped plate 33. The lower end of the movable wedge-shaped plate 33 is provided with a second inclined surface matched with the first inclined surface 321. The upper end surface of the movable wedge-shaped plate 33 is provided with a horizontal supporting surface 331. The lower end surface of the base 31 is parallel to the horizontal supporting surface 331. The sidewall of the base 31 is further provided with a through hole. The movable wedge-shaped plate 33 is provided with an operation groove 332. The operation groove 332 is provided with a force applying groove wall 3321 corresponding to the through hole. The fixed supporting plate 32 is provided with an avoiding communication hole 322 communicating the through hole and the operation groove 332. The fixed supporting plate 32 and the movable wedge-shaped plate 33 are further detachably provided with a limiting structure limiting the sliding of the movable wedge-shaped plate 33. The limiting structure includes a limiting pin 35. The first inclined surface 321 and the second inclined surface are further provided with semicircular insertion hole semislots matched with each other to form an insertion hole 36. The limiting pin 35 is inserted into the insertion hole 36. The limiting pin 35 is partially exposed outside the insertion hole 36. The exposed part of the limiting pin 35 is provided with a pulling hole 37. The operation groove 332 is a groove with a triangular cross section. The force applying groove wall 3321 is vertically arranged. The through hole and the avoiding communication hole 322 are inclined through holes. The inclined through holes are matched with the inclined groove wall 3322 of the triangular operation groove 332.

[0038] A locking structure for locking the movable wedge plate 33 is also provided between the base 31 and the movable wedge plate 33. The locking structure includes a locking hook 38 rotatably mounted on the side of the base 31, and a locking pin 39 that cooperates with the locking hook 38 is also provided on the side wall of the movable wedge plate 33.

[0039] In use, the welding auxiliary device of this application employs an upper mold 1 and a lower mold 2 to fix the wall panel 4 and the wall base plate 5. The fixing structure on the second fixing surface 22 is the same as the fixing structure on the first fixing surface. On the first fixing surface, four positioning blocks 15 are located at the four corners to form a positioning area for positioning the wall panel 4. The locking blocks 14 are fixed on the first fixing surface and distributed around the positioning area. The locking blocks 14 are located on the side of the wall panel 4, and a wedge-shaped locking plate 16 is inserted into the locking block 14. The wedge-shaped locking plate 16 presses and fixes the wall panel 4, while using a connecting... The upper template 11 and lower template 21 are directly fixed by the connector, which reduces the welding between the connector and the wall panel 4 and the wall base plate 5, thus reducing welding deformation. The upper mold 1 and lower mold 2 are pressed together vertically and then welded together by the connector, making the upper template 11 and lower template 21 flatter and better pressed onto the support pier 3, which also reduces deformation when welding the threaded steel bar 6. The threaded steel bar 6 can be inserted through the operating hole 12 and the observation clearance hole 24, and then welded to the threaded steel bar 6 in the welding through hole through the operating hole 12 and the observation clearance hole 24, which is also convenient. The operating hole 12 and the observation clearance hole 24 on the upper mold 1 and lower mold 2 are one-to-one and coaxially set, which is convenient for corresponding with the welding through holes on the wall panel 4 and the wall base plate 5. At the same time, the operating hole 12 is set as a conical hole, which provides a wider field of vision when inserting the threaded steel bar 6, thus facilitating operation. The wall panel 4 and the wall base plate 5 are also provided with studs 7.

[0040] When the support pier 3 is in normal support, the horizontal support surface 331 on the movable wedge plate 33 supports the wall panel 4. When disassembly is required, the push rod 8 is directly inserted through the through hole. The push rod 8 passes directly through the avoidance connecting hole 322 and is inserted into the operating groove 332, pushing against the force-applying groove wall 3321. Since the through hole and the avoidance connecting hole 322 are both inclined through holes, and the position of the inclined hole corresponds to the inclined groove wall 3322 of the triangular operating groove 332, the inclined through hole and the avoidance connecting hole 322 will play a certain guiding role when the push rod 8 is inserted, so that the push rod 8 is inserted more accurately into the operating groove 332. The movable wedge plate 33 slides by pushing, and the loosened movable wedge plate 33 descends along the first inclined surface 321 and separates from the wall panel 4, making the disassembly of the support pier 3 simpler.

[0041] When working, multiple sets of supporting piers 3 need to be used at the same time. The locking hooks 38 and the locking pins of the locking structure can lock the corresponding movable wedge-shaped plates 33 and the fixed supporting plates 32 of each set to each other, so as to avoid confusion and facilitate the overall setting at the specified position during installation and use.

[0042] The above-described embodiments are only descriptions of the preferred embodiments of the present application and do not limit the scope of the present application. Various modifications and improvements of the technical solutions of the present application made without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A steel plate reinforced concrete wall panel welding aid characterised in that: The mold comprises an upper mold, a lower mold and a plurality of support piers, the upper mold comprises an upper mold plate, the lower surface of the upper mold plate is a first fixed surface, and the upper surface of the upper mold plate is provided with an upper observation hole plate; the lower mold comprises a lower mold plate, the upper surface of the lower mold plate is a second fixed surface, and the lower surface of the lower mold plate is provided with a lower observation hole plate, the first fixed surface is provided with a fixing structure for fixing the wall panel of the steel plate concrete wall panel, the second fixed surface is provided with a fixing structure for fixing the wall base plate of the steel plate concrete wall panel, the lower mold plate and the upper mold plate are provided with a plurality of operation holes for facilitating welding operation, the operation holes correspond to the welding through holes on the wall base plate and the wall panel one by one, the upper observation hole plate and the lower observation hole plate are further provided with observation avoiding holes corresponding to the operation holes one by one, the size of the operation hole is greater than the size of the welding through hole, the size of the observation avoiding hole is greater than the size of the operation hole, and the side surfaces of the upper mold plate and the lower mold plate are further provided with connecting pieces for welding the upper mold plate and the lower mold plate into one body.

2. A steel sheet concrete wall panel welding aid as claimed in claim 1 wherein: The fixing structure on the first fixed surface comprises four positioning blocks and a plurality of C-shaped locking blocks, the positioning blocks are L-shaped and are welded and fixed on the first fixed surface, the four positioning blocks are respectively located at four corners to form a positioning area for positioning the wall panel, the locking blocks are respectively fixed on the first fixed surface and are distributed around the positioning area, the locking blocks are arranged on the first fixed surface at the edges of the wall panel, wedge-shaped locking plates are inserted into the locking blocks, the wedge-shaped locking plates tightly press and fix the wall panel, and the fixing structure on the second fixed surface is the same as the fixing structure on the first fixed surface.

3. A steel sheet concrete wall panel welding aid as claimed in claim 2 wherein: The operation hole and the observation avoiding hole are coaxially arranged one by one, and the operation hole is a tapered hole.

4. A steel sheet concrete wall panel welding aid as claimed in claim 1 wherein: The upper surface of the upper mold plate is provided with a plurality of parallel upper rib plates connected with the upper observation hole plate, and the upper rib plates are perpendicular to the upper observation hole plate and the upper mold plate; the lower surface of the lower mold plate is connected with the lower observation hole plate through a plurality of parallel lower rib plates, and the lower rib plates are perpendicular to the lower observation hole plate and the lower mold plate.

5. A steel sheet concrete wall panel welding aid as claimed in claim 1 wherein: The support pier comprises a base, the upper end of the base is fixed with a fixed support plate, the upper end of the fixed support plate is provided with a first inclined surface, the upper end of the fixed support plate is provided with a movable wedge-shaped plate, the lower end of the movable wedge-shaped plate is provided with a second inclined surface matched with the first inclined surface, the upper end surface of the movable wedge-shaped plate is provided with a horizontal support surface, the lower end surface of the base is parallel to the horizontal support surface, the sidewall of the base is further provided with a through hole, the movable wedge-shaped plate is provided with an operation slot, the operation slot is provided with a force slot wall corresponding to the through hole, the fixed support plate is provided with an avoiding communication hole communicating the through hole and the operation slot, and a limiting structure for limiting sliding of the movable wedge-shaped plate is further detachably mounted between the fixed support plate and the movable wedge-shaped plate.

6. A steel sheet concrete wall panel welding aid as claimed in claim 5 wherein: The limiting structure comprises a limiting pin, a semicircular insertion hole semislit is arranged between the first and second inclined surfaces, the insertion hole semislits are matched to form an insertion hole, the limiting pin is inserted into the insertion hole, the limiting pin is partially exposed outside the insertion hole, and the exposed part of the limiting pin is provided with a pulling hole.

7. A steel sheet concrete wall panel welding aid as claimed in claim 6 wherein: The operation slot is a slot with a triangular cross section, and the force applying slot wall is vertically arranged.

8. A steel sheet concrete wall panel welding aid as claimed in claim 7 wherein: The through hole and the avoiding communication hole are both inclined holes, and the inclined holes are correspondingly matched with the inclined slot walls of the triangular operation slot.

9. A steel sheet concrete wall panel welding aid as claimed in claim 8 wherein: The base and the movable wedge-shaped plate are further provided with a locking structure for locking the movable wedge-shaped plate, the locking structure comprises a locking hook rotatably installed on the side surface of the base, and the side wall of the movable wedge-shaped plate is further provided with a locking pin matched with the locking hook.

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