High-flatness concrete wall splicing steel formwork

Abstract

A high-flatness concrete wall splicing steel formwork belongs to the field of buildings and is characterized in that the concrete wall splicing steel formwork is a rectangular frame composed of a pair of side frames and a pair of top frames, a cold-rolled steel panel is fixed to one side of the rectangular frame, a plurality of longitudinal supporting strips and a plurality of transverse supporting strips are arranged in the rectangular frame, and the longitudinal supporting strips and the transverse supporting strips are arranged in the rectangular frame. The front faces of the cold-rolled steel panels are sprayed with release layers, positioning holes in the frames or the top frames of the concrete wall steel formworks are spliced and fixed through splicing components and splicing pins, the edges of the adjacent cold-rolled steel panels are tightly attached together in a gapless mode after the concrete wall steel formworks are spliced, and the concrete wall splicing steel formworks are fixed through the positioning holes. Triangular protruding marks on the surface of the concrete wall can be omitted, plastering can be reduced or not performed, plastering materials and labor cost are saved, and the construction progress can be accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steel formwork, in particular to a high flatness concrete wall splicing steel formwork, belongs to the field of building. BACKGROUND

[0002] With the development of urbanization, in the process of urban construction, building technology is also developing, the original wood model is generally used in concrete pouring, and then after the aluminum alloy model develops to alloy steel formwork, the use of alloy steel formwork not only improves the convenience and reusability of the formwork disassembly, and improves the smoothness and flatness of the concrete wall.

[0003] Patent 202320498668.8 discloses a super-strong lightweight alloy steel formwork, Figure 8 is a structure diagram of the existing alloy steel formwork, Figure 10 is a bending angle structure diagram of the integrally formed alloy steel formwork. The super-strong lightweight alloy steel formwork comprises an alloy steel formwork body 31, the alloy steel formwork body 31 comprises positioning holes 32, a latch 33 and a rocker arm slot, wherein the positioning holes 32 are arranged on the frame 35 of the alloy steel formwork body, the splicing latch 33 passes through the inside of the positioning hole 32, and the alloy steel formwork body 31 is integrally formed by alloy steel material, the side of the alloy steel formwork body is integrally formed with a frame, and the end of the alloy steel formwork body is welded with a top frame 36, since the alloy steel formwork body 31 and the frame 35 are integrally formed by cold bending process, in the forming process, in order to improve the strength of the alloy steel bending part, the bending part has a certain bending angle, and an angle alpha is formed with the outer surface of the body, if it is directly bent into a right angle, it will cause breakage or reduce the strength between the body and the frame, since the bending angle exists, after splicing two formworks, the surface of the concrete wall will form a triangular formwork butt joint mark which is higher than the wall surface, so that the originally smooth formwork forms a triangular protruding mark 37 between the walls, in order to improve the flatness of the wall, it is necessary to form a flat wall by plastering on the surface.

[0004] In this way, in the subsequent construction, it is necessary to use mortar to smooth the triangular protruding mark 37 which is higher, and the smooth wall surface is less or not plastered, which can be directly painted and used, so that a thick plastering process is added, in the present day of lack of human resources and high labor cost, which undoubtedly increases the construction cost of residential buildings, how to reduce the construction cost is a very concerned problem of the construction company. SUMMARY

[0005] In view of the fact that the existing steel formwork forms triangular butt joint marks on the wall surface when forming the concrete wall, and the originally smooth wall surface is formed with triangular protruding marks, the problem of forming a smooth surface by plastering thick mortar is solved, the utility model provides a high flatness concrete wall splicing steel formwork, which aims at canceling the triangular protruding marks on the surface of the concrete wall, so that a smooth wall can be obtained without plastering, and the wall can be directly used by applying paint without plastering, thereby saving a large amount of materials and labor cost, accelerating construction progress and reducing construction cost.

[0006] The utility model discloses a high flatness concrete wall splicing steel formwork, which comprises an outer corner formwork provided with positioning holes, an inner corner formwork and a steel formwork, the steel formwork comprises a frame and a top frame, the concrete wall splicing steel formwork is formed by splicing a plurality of steel formworks, a plurality of outer corner formworks and a plurality of inner corner formworks, a single steel formwork comprises a rectangular frame formed by a pair of frames and a pair of top frames, the frame and the top frame are provided with a small plane on one side of the front surface of the steel formwork, a panel is fixed to one side of the rectangular frame with the small plane, the panel is a cold-rolled steel sheet, a recessed groove is arranged at the middle position of the butt joint surface of the frame or the top frame, a plurality of positioning holes are arranged in the recessed groove, a plurality of longitudinal support bars and a plurality of transverse support bars are arranged in the rectangular frame on the back surface of the panel, the frame, the top frame, the longitudinal support bars and the transverse support bars are fixed to each other and to the back surface of the panel, a plurality of steel formworks are arranged on the inner and outer sides of the concrete wall respectively after splicing, an outer corner formwork is arranged at the outer corner of the corner, an inner corner formwork is arranged at the inner corner of the corner, a cold-rolled steel sheet is arranged on the surface of the inner corner formwork in contact with the concrete, the butt joint parts of the plurality of steel formworks, the outer corner formworks and the inner corner formworks are spliced and fixed by splicing pins, a release layer is sprayed on the front surface of the panel, the outer side of the inner corner formwork and the outer side of the outer corner formwork with the positioning holes are butted with the frame of the steel formwork, the two frames of the steel formwork are directly butted, the panel of the outer corner formwork, the inner corner formwork and the steel formwork is in one plane, a plurality of limiting holes are arranged on the opposite sides of the plurality of spliced steel formworks on the concrete according to the designed interval, a limiting part with the thickness of the concrete is arranged between the opposite limiting holes, the limiting part extends to the back surface of the plurality of spliced steel formworks in the same plane through a tensioning screw, a back ridge is horizontally arranged on the back surface of the plurality of steel formworks, a plug hole is arranged on the back ridge, and the tensioning screw passes through the plug hole and tightens the limiting part by means of a nut.

[0007] Further, the limiting holes are located at the center position of the width of the panel, a plurality of limiting holes are arranged on the same steel formwork in the longitudinal direction, the interval of the limiting holes in the transverse direction is an integer multiple of the width of the panel, the limiting part is at least hollow at the end, an end plate is arranged at the end of the hollow structure, a rectangular hole is arranged at the center position of the two end plates, a tensioning screw with a locking end is arranged on the rectangular hole, and the outer end of the tensioning screw is fixed by means of a nut through the back ridge.

[0008] Further, the width of the longitudinal support bar is consistent with the width of the frame or the top frame, the longitudinal support bar includes a long longitudinal support bar and a short longitudinal support bar, the length of the long longitudinal support bar is the difference between the length of the steel formwork frame and 2 times the thickness of the top frame, and the short longitudinal support bar is a multi-section longitudinal support bar butted between one or more transverse support bars in the length direction;

[0009] Further, the transverse support bar includes an equal-width transverse support bar with a width equal to the width of the longitudinal support bar and a non-equal-width transverse support bar with a width less than 1 / 2 the width of the longitudinal support bar;

[0010] Further, one or both of the intersecting parts of the plurality of longitudinal support bars and the plurality of transverse support bars are provided with an intersecting gap, and after the intersection, the intersecting parts of the plurality of longitudinal support bars and the plurality of transverse support bars on the back of the spliced concrete wall steel formwork are in the same plane;

[0011] Further, the edge part of one side of the back of the single steel formwork of the frame and the top frame is provided with a folded edge, the outer side of the frame and the top frame is provided with a recessed groove, and a plurality of positioning holes are located in the recessed part of the recessed groove;

[0012] Further, the contact parts of the frame and the top frame, the contact parts of the frame and the top frame and the back of the panel, the contact parts of the plurality of longitudinal support bars and the plurality of transverse support bars, the contact parts of the frame and the top frame and the longitudinal support bar and the transverse support bar, and the contact parts of the longitudinal support bar and the transverse support bar and the back of the panel are welded and fixed, and the welding includes spot welding or full welding;

[0013] Further, the diameter of the end plate is greater than the diameter of the limiting hole, the diameter of the tensioning screw is equal to or less than the diameter of the limiting hole, and the locking end provided at one end of the tensioning screw is connected with the limiting part by rotating the angle after being inserted into the rectangular hole;

[0014] Further, one of the support bars provided with the intersecting gap is the longitudinal support bar, and the other is the transverse support bar, the intersecting gap of the longitudinal support bar is provided with the non-equal-width transverse support bar, the width of the non-equal-width transverse support bar is less than 1 / 2 the width of the equal-width transverse support bar, and the depth of the gap is equal to the width of the non-equal-width transverse support bar; both of the support bars provided with the intersecting gap refer to the width of the longitudinal support bar being equal to the width of the transverse support bar, the depth of the gap of both is 1 / 2 the width, the intersecting is provided, or any one is cut off and welded at the intersecting part.

[0015] The utility model has the positive effect that compared with prior art, through separating the frame and the panel, using the components of different materials respectively, can avoid forming the triangular protruding marks on the surface of the wall in the process of splicing the two templates, forming the wall with high flatness, can directly paint the white paint on the concrete wall, constitutes the indoor surface, can plaster less or not plaster, saves the material and the labor cost, through setting up a plurality of longitudinal support strips and a plurality of horizontal support strips in the rectangular frame, can improve the breakage resistance of the template itself, at the same time can improve the support strength of the template, through setting up the limiting hole of concrete thickness direction between the steel templates on the two sides of the concrete thickness direction, setting up the limiting component between the limiting hole of opposite concrete thickness direction, can prevent the concrete wall from being wide or narrow in the pouring process, influence the pouring size of the wall, can ensure the thickness of the concrete wall, through setting up the rectangular hole on the end plate of limiting component, and setting up the locking end matched with the end of limiting piece, can insert the locking end into the rectangular hole, can connect the limiting component and the limiting piece on the end of tensioning screw by rotating the locking end and the angle of tensioning screw, then passes the other end of tensioning screw through the back ridge, utilizes the nut to fix the tensioning screw on the back side of back ridge, can prevent the limiting component from falling off, guarantees the thickness of the concrete wall, through setting up the recessed groove on the outside of frame and top frame, can prevent the butt joint surface of spliced concrete wall splicing steel template from influencing the neat butt joint of panel edge due to protrusion, at the same time, can also guarantee the panel butt joint of concrete wall splicing steel template in a plane, reach the minimum gap between each other, through designing the end of limiting component into hollow structure, can set up the end plate on the limiting component, and set up the rectangular hole in the center position of end plate, can set up the limiting component between the two templates opposite to each other, utilizes the tensioning screw and nut to tighten the limiting piece from the back of steel template, through rotating the locking end a certain angle, utilizes the nut to lock can make the cold-rolled plate of both sides of steel template and outer end plate close together, when disassembling the template, rotates the near end in the opposite direction, makes the rectangular locking end consistent with the rectangular hole, the limiting piece can separate from the rectangular hole along with the disassembly of steel template, the limiting component remains in the concrete wall, through making the panel of inner corner template corner part, outer corner template and steel template in a plane, can make the concrete form a high flatness wall surface, can improve the flatness and the appearance of concrete wall, cancels the triangular protruding mark on the surface of concrete wall by using the utility model, even if plastering less or not plastering can also obtain the flat wall, can directly use the paint, saves a large amount of material and labor cost, speeds up the construction progress, reduces the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure diagram of corner splicing steel template.

[0017] Figure 2 The back structure diagram of the utility model.

[0018] Figure 3 The schematic view of the plate structure of the frame and the top frame.

[0019] Figure 4 The schematic view of the structure of the limiting component.

[0020] Figure 5 The schematic view of the sectional structure of the limiting component.

[0021] Figure 6 The schematic view of the side structure of the tensioning screw.

[0022] Figure 7 The schematic view of the fixing structure of the limiting component in the pouring of concrete.

[0023] Figure 8 The schematic view of the structure of the longitudinal support strip.

[0024] Figure 9 The schematic view of the structure of the existing alloy steel formwork.

[0025] Figure 10 The schematic view of the bending angle structure of the integrally-formed alloy steel formwork.

[0026] Label explanation: 10-panel, 11-longitudinal support strip, 12-transverse support strip, 12a-equal-width transverse support strip, 12b-non-equal-width transverse support strip, 13-recessed groove, 14-folded edge, 15-facet, 16-limiting hole, 18a-notch one, 18b-notch two, 19a-outer corner formwork, 19b-inner corner formwork, 20-steel formwork, 21-limiting component, 22-rectangular hole, 23-hollow structure, 24-tensioning screw, 24a-nut, 25-locking end, 26-back ridge, 27-socket, 28-concrete wall, 31-alloy steel formwork body, 32-positioning hole, 33-splicing bolt, 35-frame, 36-top frame. DETAILED DESCRIPTION

[0027] The specific technical scheme of the utility model will be described in detail below in combination with the drawings. In the following description, one side of the cold-rolled steel plate is taken as the front side, and the opposite side is taken as the back side. The width of the frame 35, the top frame 36, the longitudinal support strip 11, and the transverse support strip 12 is the thickness direction of the spliced steel formwork.

[0028] The technical scheme of the utility model is a high-flatness concrete wall spliced steel formwork, Figure 1 is the schematic view of the structure of the corner part spliced steel formwork. Figure 2 is the schematic view of the back structure of the utility model. Figure 3Is the plate structure schematic diagram of constituting the frame 35 and the top frame 36, including the outer corner template 19a, the inner corner template 19b and the steel template 20 provided with the positioning hole 32, the steel template 20 includes the frame 35, the top frame 36, the concrete wall splicing steel mould is spliced by a plurality of steel templates 20 and a plurality of outer corner templates 19a, a plurality of inner corner templates 19b, a single steel template 20 includes a rectangular frame composed of a pair of frames 35 and a pair of top frames 36, the frame 35 and the top frame 36 are provided with a small plane 15 on the front side of the steel template 20, the rectangular frame with the small plane 15 on one side is fixed with the panel 10, the panel 10 is a cold-rolled steel sheet, the butt joint recessed groove 13 is arranged on the middle position of the butt joint surface of the frame 35 or the top frame 36, a plurality of positioning holes 32 are arranged in the butt joint recessed groove 13, a plurality of longitudinal supporting strips 11 and a plurality of transverse supporting strips 12 are arranged in the rectangular frame on the back of the panel 10, the frame 35, the top frame 36, the longitudinal supporting strip 11 and the transverse supporting strip 12 are fixed with each other and fixed with the back of the panel 10, a plurality of steel templates 20 are spliced and arranged on the inner and outer sides of the concrete wall 28 respectively, the outer corner template 19a is arranged at the outer corner of the corner, the inner corner template 19b is arranged at the inner corner of the corner, the cold-rolled steel plate is arranged on the surface of the inner corner template 19b in contact with the concrete 28, the butt joint portions of the steel template 20, the outer corner template 19a and the inner corner template 19b between a plurality of steel templates 20 composed of cold-rolled steel are spliced and fixed by using the splicing pin 33, the cold-rolled steel plate and the panel 10 are sprayed with a release layer on the front surface, the outer side of the inner corner template 19b and the outer corner template 19a with the positioning hole 32 is butted with the frame of the steel template 20, the frames 35 of two steel templates 20 are directly butted, the cold-rolled steel plate of the outer corner template 19a and the inner corner template 19b and the panel 10 of the steel template are in a plane, a plurality of spliced steel templates 20 on the opposite sides of the concrete 28 are provided with opposite limiting holes 16 according to the design interval, the limiting parts 21 of the concrete thickness are arranged between the opposite limiting holes 16, the limiting parts 21 extend to the back of a plurality of spliced steel templates 10 on the same plane by the tensioning screw 24, a plurality of back battens 26 are horizontally arranged on the back of the steel template, the insertion hole 27 is correspondingly arranged on the back batten 26, the tensioning screw 24 passes through the insertion hole 27 and tightens the limiting part 21 by using the nut 24a, and the front surfaces of the steel templates 10 are close together.

[0029] The above-mentioned cold-rolled steel sheet constituting the panel 10 is composed of special material, which belongs to high-strength rare earth weathering steel material.

[0030] Figure 4 Is the limiting part 21 structure schematic diagram, Figure 5 Is the limiting part 21 cross-sectional structure schematic diagram, Figure 6 Is the side surface structure schematic diagram of the tensioning screw 24, Figure 7This is a schematic diagram of the fixing structure of the limiting component during concrete pouring. The limiting hole 32 is located at the center of the width of the panel 20. Multiple limiting holes 32 are arranged on the same steel template 20 in the longitudinal direction. The limiting holes 32 are spaced apart by an integer multiple of the panel width in the transverse direction. The limiting component 21 is a hollow structure 23 at least at the end. The end of the hollow structure 23 is provided with an end plate. The center of both end plates is provided with a rectangular hole 22. The rectangular hole 22 is equipped with a tensioning screw 24 with a locking end 25. The outer end of the tensioning screw 24 passes through the back rib 26 and is fixed by a nut 24a.

[0031] The outer corner of the concrete wall 28 is provided with an outer corner template 19a with positioning holes 32, and the inner corner is provided with an inner corner template 19b. The two sides of the inner corner template 19b have the same structure as the frame 35. The two sides of the inner corner template 19b are connected to the frame 35 of the steel template 20. The splicing of the steel template 20 of the concrete wall 28 is fixed by splicing pins 33 through the positioning holes 32 on the frame 35 or the top frame 36. The splicing between the inner corner template 19b and the steel template 20 is also fixed by splicing pins 33 through the positioning holes 32. The splicing between the outer corner template 19a and the frame 35 is also fixed by splicing pins 33 on the positioning holes 32. The steel template 20, the outer corner template 19a, and the inner corner template 19b are spliced ​​together to form the space for pouring the concrete wall 28.

[0032] Despite Figure 2 The limiting hole 16 is shown in the figure. However, not every steel template is provided with the limiting hole 16. Instead, steel templates 20 with limiting holes 16 are provided according to the design interval as needed. The limiting hole 16 can be provided on each steel template 20, or it can be provided in a row every other one or more steel templates 20. The height of the setting is selected to avoid the longitudinal support bar 11 and the transverse support bar 12. The splicing pin 33 has been used in the prior art and will not be described in detail here.

[0033] The diameter of the end plate is larger than the diameter of the positioning hole 32. The diameter of the tensioning screw 24 is equal to or smaller than the diameter of the limiting hole 16. One end of the tensioning screw 24 is provided with a locking end 25 that matches the rectangular hole 22. After the locking end 25 is inserted into the rectangular hole 22, it can be connected together by rotation. The back rib 26 is provided with an insertion hole 27. The tensioning screw 24 passes through the back rib 26 and the locking end 25 is tightened with the end plate of the limiting component 21 by using a nut 24a.

[0034] The diameter of the end plate is larger than the diameter of the limiting hole 16, and the diameter of the tensioning screw 24 is equal to or smaller than the diameter of the limiting hole 16. A locking end 25 is provided at one end of the tensioning screw 24. After the locking end 25 is inserted into the rectangular hole 22, it is connected to the limiting component 21 by rotating the angle.

[0035] The width of the longitudinal support bar 11 is consistent with the width of the frame 35 or the top frame 36, the longitudinal support bar 11 includes long longitudinal support bars and short longitudinal support bars, due to the transverse support bars 12 at both ends being transversely arranged at the end of the longitudinal support bar 11, the length of the long longitudinal support bar 11 is the difference between the length of the steel formwork frame 35 and 2 times the thickness of the top frame 36, and the short longitudinal support bar is a multi-section longitudinal support bar which is cross-jointed in the length direction between one or more transverse support bars 36.

[0036] The transverse support bar 12 includes an equal-width transverse support bar 12a with a width equal to the width of the longitudinal support bar 11 and a non-equal-width transverse support bar 12b with a width less than 1 / 2 the width of the longitudinal support bar 11, and the equal-width transverse support bar 12a is provided with a notch at the intersection with the longitudinal support bar 11.

[0037] One or both of the intersection parts of the plurality of longitudinal support bars 11 and the plurality of transverse support bars 12 are provided with a cross-notch, and after the intersection, the intersection parts of the plurality of longitudinal support bars 11 and the plurality of transverse support bars 12 on the back of the spliced concrete wall steel formwork are in the same plane.

[0038] The support bar provided with the cross-notch one 18a is the longitudinal support bar 11, at this time, the longitudinal support bar 11 provided with the cross-notch one 18a is provided with a non-equal-width transverse support bar 12b, the depth of the cross-notch one 18a is the width of the non-equal-width transverse support bar 12b, and the width of the non-equal-width transverse support bar 12b is less than 1 / 2 the width of the equal-width transverse support bar 12a; the support bar provided with the cross-notch on both sides refers to the support bar with the width of the longitudinal support bar 11 equal to the width of the transverse support bar 12, each of the two support bars has a notch two 18b with a depth of 1 / 2 the width, which is arranged perpendicularly to each other, or any one of them is cut off and welded at the intersection part.

[0039] Figure 8is a structural diagram of the longitudinal support bar, in the embodiment, the depth of the notch 18a is less than 1 / 2 of the width of the longitudinal support bar 11, the depth is consistent with the width of the non-equal-width transverse support bar 12b, the non-equal-width transverse support bar 12b is arranged in the notch 18a, the equal-width transverse support bar 12a with the same width as the longitudinal support bar 11 is arranged in the notch 18b, the depth of the notch 18b accounts for 1 / 2 of the longitudinal support bar 11, the equal-width transverse support bar 12a arranged at the intersection position has the same width as the longitudinal support bar 11, the equal-width transverse support bar 12a is also provided with a notch with the same depth as the notch 18b, the notch accounts for 1 / 2 of the width of the transverse support bar 12, whether the non-equal-width transverse support bar 12b or the equal-height transverse support bar 12a, the back surface at the intersection position with the longitudinal support bar 11 is equal in height, that is, the back surface of the longitudinal support bar 11, the back surface of the transverse support bar 12 and the back surface of the rectangular frame formed by the pair of side frames 35 and the pair of top frames 36 are all in the same plane.

[0040] The side frame 35 and the top frame 36 are provided with a folded edge 14 at the edge of the back surface of the single steel formwork, the outer side of the side frame 35 and the top frame 36 is provided with a recessed groove 13, and a plurality of positioning holes 32 are arranged in the recessed part of the recessed groove 13.

[0041] The contact part of the side frame 35 and the top frame 36, the contact part of the side frame 35 and the top frame 36 and the back surface of the panel 10, the contact part of the plurality of longitudinal support bars 11 and the plurality of transverse support bars 12, the contact part of the side frame 35 and the top frame 36 and the longitudinal support bar 11 and the transverse support bar 12, and the contact part of the longitudinal support bar 11 and the transverse support bar 12 and the panel 10 are welded, and the welding includes spot welding and full welding.

[0042] In the embodiment, full welding is adopted between the contact part of the side frame 35 and the top frame 36 and the back surface of the panel 10, and the remaining part is fixed by spot welding.

[0043] In the embodiment, the height of the single steel formwork is the indoor height of a house, generally 2600 or 2700 mm, and the width is generally 200 or 300 mm, but the steel formwork is not limited to be used on a house, and the corresponding height or width can be designed according to needs.

[0044] In the embodiment, the panel 10 is full-welded with the outer edges of the longitudinal support strips 11 and the transverse support strips 12, and the panel is spot-welded with the inner edges of the longitudinal support strips 11 and the transverse support strips 12 and the contact portions of the longitudinal support strips 11 and the transverse support strips 12. Normally, the outer corner template 19a is a right-angle steel angle, and the lengths of the outer corner template 19a and the inner corner template 19b can be cut according to the length and width of the steel template or the required length. If it is a special angle, a special-angle outer corner template 19a and a special-angle inner corner template 19b can also be used.

[0045] The positioning holes 32 provided on the outer corner template 19a and the inner corner template 19b are provided on the butt-joint edges on both sides. The outer corner template 19a and the inner corner template 19b are provided with a plurality of positioning holes 32, the spacing between the positioning holes 32 is equal to the spacing between the positioning holes 32 on the frame 35 or the top frame 36, the width of the single-side edge of the outer corner template is greater than or equal to the width of the frame 35 or the top frame 36, the thickness of the outer corner template is greater than the thickness of the frame 35 or the top frame 36 and less than 20 mm, and the distance from the corner line of the outer corner template to the positioning hole 32 is equal to the distance from the outer edge of the steel template panel 10 to the positioning hole 32 of the frame 35 or the top frame 36. When assembled, the frame 35 or the top frame 36 is closely arranged with the two edges of the outer corner template 19a, the length is cut according to the requirement, the angle of the outer corner template is not limited to a right angle, and various-angle outer corner templates can be used according to the design requirement, provided that a shorter splicing dowel 33 can be arranged.

[0046] The splicing dowel 33 can also be a structure locking and fixing of the tensioning screw 24. Although only the inner and outer splicing structures of one corner of the concrete wall body 28 are drawn in Figure 1 the drawings, the other corners can be spliced in the same way. The side of the inner corner template 19b close to the concrete wall body 28 can be a cold-rolled steel plate or an integrally-formed whole inner corner template 19b using a hot-rolled steel, and the positioning holes 32 consistent with the frame 35 are formed on the butt-joint surface of the frame 35.

[0047] The utility model discloses compared with the alloy steel template of enjoying, through separating the frame 35 and panel 10, using the component of different material respectively, utilize the welding method and weld into right angle, can dispense with the formation of the high wall body surface of a row of triangle protruding marks in the splicing portion of two adjacent templates in the process of splicing template 20, form the wall body of high flatness, can directly whitewash white paint on the concrete wall body, constitute indoor surface, can plaster less or not plaster, save material and labor cost, through setting up multiple longitudinal support bars 11 and multiple horizontal support bars 12 in the rectangular frame, can improve the resistance to breakage intensity of steel template 10 itself, can improve the support intensity of steel template 10 simultaneously, through setting up concrete wall body 28 thickness limit hole 16 between the opposite splicing steel template 10 panel 20 surfaces in the thickness direction of concrete wall body 28 according to the set spacing, set up limiting component 21 between opposite concrete wall body 28 thickness limit hole 16, and utilize the tensioning screw 24 tensioning, can prevent concrete wall body 28 from being wide or narrow in the pouring process, influence the pouring size of concrete wall body 28, through setting up recessed groove 13 on the outside of frame 35 and top frame 36, can prevent the butt joint surface of concrete wall body 28 splicing steel template 20 from influencing the neat butt joint of panel 10 edge due to protrusion, simultaneously, also can guarantee that the panel 10 of concrete wall body 28 splicing steel template is butted in a plane by splicing component, reach the minimum gap between each other, through setting up hollow structure 23 at least at the end of limiting component 21, set up end plate at both ends of hollow structure 23, set up rectangular hole 22 on the end plate, set up locking end 25 matched with rectangular hole 22 at the end of tensioning screw 24, can insert locking end 25 into rectangular hole 22, can connect limiting component 21 and locking end 25 of tensioning screw 24 by rotating tensioning screw 24 with locking end 24, then pass the insertion hole 27 set up on the back ridge 26 set up on the back of steel template, lock by nut 24a, can prevent limiting component 21 from falling off, limiting component 21 of hollow structure 23 also can alleviate the thermal expansion and cooling phenomenon of concrete, can set up limiting component 21 between two steel templates opposite each other, need pass panel 10 from the front of steel template 20 along the limiting hole 16 by tensioning screw 24 with rectangular locking end 25 before steel template assembly, after steel template assembly in place, insert locking end 25 into rectangular hole 22 at the end of limiting component 21, rotate a certain angle, then pass insertion hole 27 of back ridge 26 by tensioning screw 24, lock by nut 24a, can guarantee the thickness consistency of concrete wall body 28, when disassembling steel template 20 after the solidification of wall pouring, rotate tensioning screw 24 in the opposite direction, make rectangular locking end 25 and rectangular hole 22 keep consistent, tensioning screw 24 can be disassembled from rectangular hole 22 at the end of limiting component 21, separate from rectangular hole 22, limiting component 21 as a part of concrete wall body 28, remain in concrete wall body 28.By making the corner of the outer angle template and the panel in the same plane, the straightness of the concrete wall 28 can be ensured, the straightness and the appearance of the concrete wall can be improved, the triangular protruding marks on the surface of the concrete wall can be cancelled by using the utility model, the wall can be flat even if plastering is little or not plastered, paint can be directly used, a large amount of materials and labor cost are saved, the construction progress is accelerated, and the construction cost is reduced.

Claims

1. A high-flatness concrete wall splicing steel formwork, comprising an outer corner formwork, an inner corner formwork and a steel formwork provided with positioning holes, the steel formwork comprising a side frame and a top frame, characterized in that: The concrete wall splicing steel mold is spliced by a plurality of steel mold plates, a plurality of outer corner mold plates and a plurality of inner corner mold plates, a single steel mold plate comprises a rectangular frame formed by a pair of side frames and a pair of top frames, the side frames and the top frames are provided with a small plane on one side of the front surface of the steel mold plate, the rectangular frame with the small plane is fixed with a panel on one side, the panel is a cold-rolled steel sheet, a recessed groove is arranged at the middle position of the abutting surface of the side frame or the top frame, a plurality of positioning holes are arranged in the recessed groove, a plurality of longitudinal support bars and a plurality of transverse support bars are arranged in the rectangular frame on the back surface of the panel, the side frame, the top frame, the longitudinal support bar and the transverse support bar are fixed with each other and with the back surface of the panel, a plurality of steel mold plates are arranged on the inner and outer sides of the concrete wall respectively after splicing, an outer corner mold plate is arranged at the outer corner part of the corner, an inner corner mold plate is arranged at the inner corner part of the corner, a cold-rolled steel plate is arranged on the surface of the inner corner mold plate in contact with the concrete, the abutting parts of the plurality of steel mold plates, the outer corner mold plate and the inner corner mold plate and the steel mold plate are spliced and fixed by splicing pins, a release layer is sprayed on the front surface of the panel, the outer side of the inner corner mold plate and the outer side of the outer corner mold plate with the positioning holes are abutted with the side frame of the steel mold plate, the two side frames of the steel mold plate are directly abutted, the panel of the outer corner mold plate, the inner corner mold plate and the steel mold plate is in the same plane, a plurality of limiting holes are arranged at the opposite positions of the plurality of splicing steel mold plates on the opposite sides of the concrete according to the design interval, a limiting part with the thickness of the concrete is arranged between the opposite limiting holes, the limiting part is extended to the back surface of the plurality of splicing steel mold plates in the same plane by a tensioning screw, a back ridge is horizontally arranged on the back surface of the plurality of steel mold plates, a plug hole is arranged on the back ridge, the tensioning screw passes through the plug hole and tightens the limiting part by a nut.

2. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: The limiting hole is located at the center position of the width of the panel, a plurality of limiting holes are arranged on the same steel mold plate in the longitudinal direction, the interval of the limiting holes in the transverse direction is an integer multiple of the width of the panel, the limiting part is at least hollow at the end part, an end plate is arranged at the end part of the hollow structure, a rectangular hole is arranged at the center position of the two end plates, a tensioning screw with a locking end is arranged on the rectangular hole, the outer end of the tensioning screw passes through the back ridge and is fixed by a nut.

3. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: The width of the longitudinal support bar is consistent with the width of the side frame or the top frame, the longitudinal support bar comprises a long longitudinal support bar and a short longitudinal support bar, the length of the long longitudinal support bar is the difference between the length of the side frame and 2 times the thickness of the top frame, the short longitudinal support bar is a plurality of longitudinal support bars which are abutted between one or more transverse support bars in the length direction.

4. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: The transverse support bar comprises an equal-width transverse support bar with the same width as the longitudinal support bar and a non-equal-width transverse support bar with a width less than 1 / 2 of the width of the longitudinal support bar.

5. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: One or both of the intersecting parts of the plurality of longitudinal support bars and the plurality of transverse support bars are provided with an intersecting notch, after the intersection, the intersecting parts of the plurality of longitudinal support bars and the plurality of transverse support bars on the back surface of the splicing concrete wall steel mold are in the same plane.

6. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: Folded edges are arranged at the edge part of one side of the back surface of the single steel mold plate of the side frame and the top frame, recessed grooves are arranged at the outer side of the side frame and the top frame, and the plurality of positioning holes are arranged in the recessed part of the recessed groove.

7. The high-flattened concrete wall splicing steel formwork according to claim 1, characterized in that: The contact parts of the side frame and the top frame, the contact parts of the side frame and the top frame and the back of the panel, the contact parts of the plurality of longitudinal support bars and the plurality of transverse support bars, the contact parts of the side frame and the top frame and the longitudinal support bars and the transverse support bars, and the contact parts of the longitudinal support bars and the transverse support bars and the back of the panel are welded and fixed, and the welding includes spot welding or full welding.

8. The high-flattened concrete wall splicing steel formwork according to claim 2, characterized in that: The diameter of the end plate is greater than the diameter of the limiting hole, the diameter of the tensioning screw is equal to or less than the diameter of the limiting hole, and the locking end provided at one end of the tensioning screw is connected with the limiting part by rotating an angle after being inserted into the rectangular hole.

9. The high-flattened concrete wall splicing steel formwork according to claim 5, characterized in that: One of the support bars is provided with a cross-shaped notch, and the other is a transverse support bar. The cross-shaped notch of the longitudinal support bar is provided with a non-equal-width transverse support bar, and the width of the non-equal-width transverse support bar is less than 1 / 2 of the equal-width transverse support bar. Both of the support bars are provided with cross-shaped notches, which means that the width of the longitudinal support bar is equal to the width of the transverse support bar, and the depth of the notches is 1 / 2 of the width. The cross-shaped notches are arranged in a cross shape, or any one of the notches is cut off and welded at the cross position.

Images