Rotary detachable backfill template

Through the design of the rotary disassembled backfill template, the combined connection method of the sliding disassembled end and the rotary fastening end is adopted, which solves the problem of cumbersome disassembly and assembly steps of the existing template, and achieves efficient and low-cost pipeline installation.

CN223062015UActive Publication Date: 2025-07-04浙江中财管道科技股份有限公司
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Patent Information

Application Number
CN202422245000.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-12
Publication Date
2025-07-04
Estimated Expiration
2034-09-12

AI Technical Summary

Technical Problem

During the installation of existing pipelines, the disassembly and assembly steps of the template are cumbersome, which affects efficiency and is costly.

Method used

The rotary disassembly backfill template is adopted, and two different connection methods are achieved by setting the sliding disassembly end and the rotary snap-in end. The locking parts and snap-in connections with the locking groove are simplified to simplify the installation steps and reduce the use of components.

Benefits of technology

It improves disassembly and assembly efficiency, reduces production costs and weight, and ensures the tightness and smoothness of the connection.

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Abstract

The utility model discloses a rotatingly dismantled backfill template, including the split template that sets up in the pipeline both sides, each split template includes sliding dismantled end and rotatingly buckling end, sliding dismantled end is detachably connected with locking piece, rotatingly buckling end includes buckling piece and locking groove, buckling piece is buckled connection locking groove, and the locking groove is connected with the locking piece. The buckling piece and the locking groove are arranged on the split formworks on the two sides of the pipeline respectively. By means of the structure, the rotating buckling end can be fastened and connected in the butt joint process of the split formworks, after butt joint of the split formworks is completed, only the locking piece needs to be connected to the sliding disassembling end subsequently, operation is easy, the whole installation step only comprises three steps, and connection tightness is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of pipeline installation, in particular to a rotation-detachable backfill formwork. Background Art

[0002] During the building construction process, water pipes need to be installed inside the building, and the installation holes need to be sealed with materials such as concrete. At the same time, formworks need to be connected to the pipes to seal the concrete and prevent concrete leakage.

[0003] For example, the publication number "CN214144726U" discloses "a fixed formwork mold for reserved holes in kitchen and bathroom", which includes two arc-shaped formworks with the same structure and installed on the outer wall of the drain pipe. The two formworks are symmetric about the axis of the drain pipe. A baffle extending towards the outer wall of the formwork is provided at the top of each formwork. Fixing pieces are provided on the side walls where the two formworks are in contact, and the top of the fixing piece is connected to the baffle. The formwork, the baffle and the fixing pieces on both sides of the formwork are integrally formed. A locking piece for fixedly connecting the two formworks is provided on the fixing piece. However, in actual applications, this type of device requires multiple operation steps during the installation and disassembly process, including formwork docking, screw docking, screw tightening, etc., which affects the disassembly and assembly efficiency. Summary of the Invention

[0004] Aiming at the problem that the existing technology in the background art has a cumbersome disassembly and assembly process, the utility model provides a rotation-detachable backfill formwork, which can reduce the steps in the disassembly and assembly process, improve the disassembly and assembly efficiency, and at the same time reduce the number of components and production costs.

[0005] To achieve the above object, the utility model adopts the following technical solutions.

[0006] A rotatable and detachable backfill formwork, comprising split formworks arranged on both sides of a pipeline. The split formworks include a sliding and detachable end and a rotating and fastening end. The sliding and detachable end is detachably connected with a locking member. The rotating and fastening end includes a fastening member and a locking groove. The fastening member is snap-connected to the locking groove. The fastening member and the locking groove are respectively arranged on the split formworks on both sides of the pipeline. In this application, by setting the rotating and fastening end and the sliding and detachable end, the connection method of the split formworks is changed into two types. Among them, the sliding and detachable end is fixed and restricted by additionally connecting a locking member. The locking member includes but is not limited to a bolt, a lock catch, a bolt, etc. Preferably, a bolt and a lock catch are selected, which can improve the connection efficiency. In the rotating and fastening end, it can be fastened through the snap connection between the locking groove and the fastening member. Since the connection methods at both ends of the split formwork are different, and one end is a snap-fastening connection, during the use process, first, the rotating and fastening end is snap-connected. In order to ensure the smoothness of the snap connection, the split formworks need to be placed in a "V" shape. After the fastening member is aligned with the locking groove, then rotate the split formworks to make the sliding and detachable ends approach each other. After the sliding and detachable ends on both sides of the split formworks are butted, then connect the locking member to lock and fix the connection of the two split formworks. Through such a structure in this application, the rotating and fastening end can be tightly connected during the process of butting the split formworks. After the split formworks are butted, only the locking member needs to be connected to the sliding and detachable end in the follow-up. The operation is simple. The whole installation step only has three steps, and the tightness of the connection is ensured. During the disassembly process, only the locking member at the sliding and detachable end needs to be taken out, and then the two split formworks are rotated to a "V" shape to be separated, without any additional operation on the rotating and fastening end. At the same time, the use of components such as bolts required in the production process is reduced, the production cost is reduced, and the weight is reduced.

[0007] Preferably, the fastening member is provided with a fastening protrusion, and the locking groove is provided with a limiting block. When the fastening member is snap-connected to the locking groove, the fastening protrusion abuts against the limiting block. By the abutment between the fastening protrusion and the limiting block, the connection tightness between the fastening member and the locking groove is ensured. Through the limitation between the limiting block and the fastening protrusion, the fastening member and the locking groove will not be disengaged during the rotation process of the split formwork.

[0008] Preferably, the split formwork includes a vertical plate and a horizontal plate. The fastening member includes a fixed base connecting the vertical plate and the horizontal plate. A fastening plate is arranged on the fixed base, and a fastening protrusion is arranged on the side of the fastening plate away from the vertical plate. The split formwork includes a vertical plate and a horizontal plate. Among them, the vertical plate and the horizontal plate are arranged in an interleaved manner to form a connection angle. The fixed base arranged at the connection angle can improve the connection stability between the vertical plate and the horizontal plate, and at the same time ensure the stability of the fixed base. A fastening plate is arranged on the fixed base, and the fastening protrusion is arranged on the fastening plate, so as to improve the connection stability between the fastening protrusion and the limiting block.

[0009] Preferably, a hollow groove is provided on the fixed base, and the hollowing direction of the hollow groove is the same as the extending direction of the vertical plate. A hollow groove is provided on the fixed base, and the hollowing direction of the hollow groove is the same as the extending direction of the vertical plate, so that on the basis of ensuring the connection strength, the weight can be reduced and the processing cost can be lowered.

[0010] Preferably, a reinforcing plate is provided on the cross plate, and the reinforcing plate is connected to the fixed base. The reinforcing plate provided on the cross plate can improve the overall structural strength. Further, connecting the reinforcing plate to the fixed base can further improve the stability of the fixed base and ensure the connection strength between the fastening member and the locking groove.

[0011] Preferably, the fastening protrusion includes an arc transition surface. An arc transition surface is provided on the fastening protrusion, so that during the process of separating or installing the fastening member and the locking groove, the arc transition surface can ensure the smooth movement of the fastening protrusion in the locking groove, avoid interference, and improve the smoothness of disassembly and assembly.

[0012] Preferably, a locking block is provided at the end of the split template, the locking groove is arranged in the locking block, and a hollow side is provided on the side of the locking block away from the fastening member. A hollow side is provided on the locking block, so that the weight of the locking block can be reduced, and at the same time, real-time observation can be carried out during the process of docking the fastening member and the locking groove, and the connection state of the fastening member and the locking groove can be adjusted through the hollow side to ensure the tightness of the fastening.

[0013] Preferably, fixing ribs are provided on the split template, and the fixing ribs are connected to the hollow side. Fixing ribs are provided on the split template, and by connecting the fixing ribs to the hollow side, the support strength of the hollow side can be enhanced, and the strength of the locking block can be prevented from being interfered by the hollow structure.

[0014] Preferably, an arc corner is provided on the side of the locking block close to the fastening member. During use, due to the presence of the vertical plate and the cross plate, when the two split templates are rotated and fastened or separated, the two split templates need to be stacked vertically and misaligned. Therefore, the cross plate will interfere with the locking block. Setting the side of the locking block close to the fastening member as an arc corner can improve the smoothness during disassembly and assembly and reduce the wear caused by interference.

[0015] Preferably, the sliding disassembly end includes stacking connection plates respectively arranged on the split templates on both sides. When the split templates on both sides are butted, the stacking connection plates on both sides overlap vertically. The stacking connection plates are provided with connection holes, and the connection holes are connected with locking pieces. The sliding disassembly end is provided with stacking connection plates, and stacking connection plates are arranged on both split templates on both sides. Therefore, after the two split templates are butted, the two stacking connection plates overlap vertically, and the connection holes on the two stacking connection plates are aligned. The aligned connection holes are connected with locking pieces, so as to lock the two split templates. During the disassembly process, only the locking pieces need to be disassembled to complete the separation of the two stacking connection plates, improving the disassembly and assembly efficiency. The locking pieces include but are not limited to pins, buckles, bolts, etc.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) By providing a sliding disassembly end and a rotating buckling end, the two split templates have two different disassembly and assembly methods, and the docking and locking of the rotating buckling end are carried out synchronously with the docking of the split templates, so as to reduce the steps in the disassembly and assembly process, improve the disassembly and assembly efficiency, and at the same time reduce parts and production costs;

[0018] (2) It can ensure the smoothness during the disassembly and assembly process and reduce the wear caused by interference;

[0019] (3) Reduce the overall weight and at the same time ensure the overall structural strength. Description of the Drawings

[0020] Figure 1 is an isometric view of the present utility model.

[0021] Figure 2 is Figure 1 a partial isometric view of the rotating buckling end in

[0022] Figure 3 is Figure 1 a partial cross-sectional view of the rotating buckling end in

[0023] Figure 4 is Figure 1 a partial isometric view of the sliding disassembly end in

[0024] In the figure:

[0025] 1 Split template, 11 Vertical plate, 12 Horizontal plate, 13 Reinforcing plate, 14 Fixed rib position;

[0026] 2 Sliding disassembly end, 21 Stacking connection plate, 22 Connection hole;

[0027] 3 Rotating fastening end, 31 Fastening member, 32 Locking groove, 321 Limiting block, 33 Fixed base, 331 Fastening plate, 332 Fastening protrusion, 333 Hollow groove, 334 Arc transition surface, 34 Locking block, 341 Hollow side, 342 Arc corner;

[0028] 4 Locking member. Specific implementation manner

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1:

[0031] As shown in FIGS. Figure 1 、 2 、4, a rotating and detachable backfill formwork includes split formworks 1 arranged on both sides of a pipeline. The split formwork 1 includes a sliding and detachable end 2 and a rotating fastening end 3. The sliding and detachable end 2 is detachably connected with a locking member 4. The rotating fastening end 3 includes a fastening member 31 and a locking groove 32. The fastening member 31 is snap-fitted with the locking groove 32. The fastening member 31 and the locking groove 32 are respectively arranged on the split formworks 1 on both sides of the pipeline. In this application, by setting the rotating fastening end 3 and the sliding and detachable end 2, the connection method of the split formwork 1 is changed into two types. Among them, the sliding and detachable end 2 is fixed and restricted by additionally connecting a locking member 4. The locking member 4 includes, but is not limited to, a bolt, a lock catch, a bolt, etc. Preferably, a bolt and a lock catch are selected, which can improve the connection efficiency. And in the rotating fastening end 3, it can be fastened through the snap-fit connection between the locking groove 32 and the fastening member 31. Since the connection methods at both ends of the split formwork 1 are different, and one end is a snap-fastening connection, during the use process, first, the rotating fastening end 3 is snap-fastened. In order to ensure the smoothness of the snap-fastening, the split formwork 1 needs to be placed in a "V" shape. After the fastening member 31 is aligned with the locking groove 32, then rotate the split formwork 1 to make the sliding and detachable ends 2 approach each other. After the sliding and detachable ends 2 on both sides of the split formwork 1 are butted, then connect the locking member 4, so as to realize the locking and fixing of the connection of the two split formworks 1. Through such a structure in this application, the rotating fastening end 3 can be tightly connected during the docking process of the split formwork 1. After the docking of the split formwork 1 is completed, only the locking member 4 needs to be connected to the sliding and detachable end 2 subsequently. The operation is simple. The whole installation step only has three steps and ensures the tightness of the connection. During the disassembly process, similarly, only the locking member 4 at the sliding and detachable end 2 needs to be taken out and the two split formworks 1 are rotated to a "V" shape to be separated, without performing additional operations on the rotating fastening end 3. At the same time, the use of components such as bolts required in the production process is reduced, the production cost is reduced, and the weight is reduced.

[0032] As shown in FIGS. Figure 2 、 3As shown, a fastening projection 332 is provided on the fastening member 31, and a limiting block 321 is provided in the locking groove 32. When the fastening member 31 is snap-connected to the locking groove 32, the fastening projection 332 abuts against the limiting block 321. By the abutment between the fastening projection 332 and the limiting block 321, the connection tightness between the fastening member 31 and the locking groove 32 is ensured. Through the limitation between the limiting block 321 and the fastening projection 332, the fastening member 31 and the locking groove 32 will not be disengaged during the rotation of the split template 1.

[0033] As Figure 2 , 3 shown, the split template 1 includes a vertical plate 11 and a horizontal plate 12. The fastening member 31 includes a fixed base 33 connecting the vertical plate 11 and the horizontal plate 12. A fastening plate 331 is provided on the fixed base 33, and a fastening projection 332 is provided on the side of the fastening plate 331 away from the vertical plate 11. A hollow groove 333 is provided on the fixed base 33, and the hollowing direction of the hollow groove 333 is the same as the extending direction of the vertical plate 11. A reinforcing plate 13 is provided on the horizontal plate 12, and the reinforcing plate 13 is connected to the fixed base 33. The fastening projection 332 includes an arc transition surface 334.

[0034] The split template 1 includes a vertical plate 11 and a horizontal plate 12, wherein the vertical plate 11 and the horizontal plate 12 are arranged alternately to form a connection angle. The fixed base 33 provided at the connection angle can improve the connection stability between the vertical plate 11 and the horizontal plate 12, and at the same time ensure the stability of the fixed base 33. A fastening plate 331 is provided on the fixed base 33, and the fastening projection 332 is provided on the fastening plate 331, so as to improve the connection stability between the fastening projection 332 and the limiting block 321. A hollow groove 333 is provided on the fixed base 33, wherein the hollowing direction of the hollow groove 333 is the same as the extending direction of the vertical plate 11, so that on the basis of ensuring the connection strength, the weight can be reduced and the processing cost can be lowered. The reinforcing plate 13 provided on the horizontal plate 12 can improve the overall structural strength. Further, the reinforcing plate 13 is connected to the fixed base 33, so as to further improve the stability of the fixed base 33 and ensure the connection strength between the fastening member 31 and the locking groove 32. An arc transition surface 334 is provided on the fastening projection 332, so that during the separation or installation of the fastening member 31 and the locking groove 32, the arc transition surface 334 can ensure the smooth movement of the fastening projection 332 in the locking groove 32, avoid interference, and improve the smoothness of disassembly and assembly.

[0035] As Figure 2 , 3As shown, a locking block 34 is provided at the end of the split template 1. A locking groove 32 is provided in the locking block 34. A hollowed-out side 341 is provided on the side of the locking block 34 away from the fastening member 31. Fixed rib positions 14 are provided on the split template 1, and the fixed rib positions 14 are connected to the hollowed-out side 341. An arc-shaped corner 342 is provided on the side of the locking block 34 close to the fastening member 31.

[0036] A hollowed-out side 341 is provided on the locking block 34, so that the weight of the locking block 34 can be reduced, and at the same time, real-time observation can be carried out during the process of docking the fastening member 31 with the locking groove 32, and the connection state of the fastening member 31 and the locking groove 32 can be adjusted through the hollowed-out side 341 to ensure the tightness of the fastening. Fixed rib positions 14 are provided on the split template 1, and the hollowed-out side 341 is connected through the fixed rib positions 14, which can enhance the support strength of the hollowed-out side 341 and prevent the strength of the locking block 34 from being interfered by the hollow structure. During use, due to the presence of the vertical plate 11 and the horizontal plate 12, when the two split templates 1 are rotated and fastened or separated, the two split templates 1 need to be stacked vertically and offset. Therefore, the horizontal plate 12 will interfere with the locking block 34, and setting the side of the locking block 34 close to the fastening member 31 as an arc-shaped corner 342 can improve the smoothness during the disassembly and assembly process and reduce the wear caused by interference.

[0037] As Figure 4 shown, the sliding disassembly end 2 includes stacking connection plates 21 respectively provided on the two split templates 1 on both sides. When the two split templates 1 on both sides are docked, the stacking connection plates 21 on both sides overlap vertically. Connection holes 22 are provided on the stacking connection plates 21, and the connection holes 22 are connected to the locking member 4. Stacking connection plates 21 are provided on the sliding disassembly end 2, and stacking connection plates 21 are provided on both split templates 1 on both sides. Therefore, after the two split templates 1 are docked, the two stacking connection plates 21 are stacked vertically, and the connection holes 22 on the two stacking connection plates 21 are aligned. The aligned connection holes 22 are connected to the locking member 4, thereby locking the two split templates 1. During disassembly, only the locking member 4 needs to be disassembled to complete the separation of the two stacking connection plates 21, improving the disassembly and assembly efficiency. The locking member 4 includes, but is not limited to, a plug, a buckle, a bolt, etc.

[0038] In this embodiment, the assembly and working process of the rotatable and detachable backfill formwork are as follows: In this embodiment, split formworks 1 are respectively arranged on both sides of the pipeline. The split formwork 1 includes a vertical plate 11 and a horizontal plate 12. The extending direction of the vertical plate 11 is the same as that of the pipeline, and the extending direction of the horizontal plate 12 is perpendicular to the extending direction of the vertical plate 11. Further, a reinforcing rib is arranged between the vertical plate 11 and the horizontal plate 12, and the reinforcing rib is of a triangular structure. A sliding detachable end 2 and a rotating fastening end 3 are arranged at the end of the split formwork 1 (the end where the split formworks 1 on both sides are connected to each other). A locking member 4 is connected to the sliding detachable end 2 and is fixed and limited by the locking member 4, so as to ensure the tight connection of the split formwork 1 on the sliding detachable end 2. The different connection methods at both ends of the split formwork 1 are realized through the snap connection between the fastening member 31 and the locking groove 32 at the rotating fastening end 3.

[0039] Further, in this embodiment, the rotating fastening end 3 includes a fixed base 33 and a locking block 34 respectively arranged on the split formworks 1 on both sides. The fixed base 33 and the locking block 34 are respectively arranged at positions close to the edge of the split formworks 1 on both sides. A fastening plate 331 is arranged on the fixed base 33 and extends out on the side of the fixed base 33 close to the locking block 34. A fastening protrusion 332 is arranged at the end of the fastening plate 331, and the protruding direction of the fastening protrusion 332 is the side away from the vertical plate 11; the inside of the locking block 34 is a hollow structure, and a locking groove 32 is arranged therein. A limiting block 321 is arranged on the side of the locking groove 32 close to the fixed base 33. After the fastening member 31 approaches the locking groove 32 and is connected to the locking groove 32, the fastening protrusion 332 abuts against the limiting block 321, so as to prevent the fastening protrusion 332 from coming out.

[0040] Further, in this application, the limiting block 321 is arranged on the outer side of the locking groove 32. Therefore, during the installation process, first dock the rotating fastening end 3, and then contract and approach the sliding detachable end 2. After the sliding detachable end 2 is docked, it is locked and connected by the locking member 4. At this time, due to the mutual limitation between the fastening protrusion 332 and the limiting block 321, the stable connection between the fastening member 31 and the locking groove 32 can be ensured. Therefore, in this embodiment, first dock the rotating fastening end 3, and then dock the sliding detachable end 2. During the docking process of the sliding detachable end 2, the rotating fastening end 3 is used as the rotation fulcrum. After the sliding detachable end 2 is docked, connect the locking member 4 to the sliding detachable end 2 to complete the locking connection of the split formworks 1 on both sides.

[0041] In this process, the docking and locking process of the rotating fastening end 3 is overlapped with the docking process of the split template 1. When the docking of the split template 1 is completed, the locking of the rotating fastening end 3 is achieved, thus saving the installation steps. At the same time, during the docking process of the split template 1, there is no need to consider the synchronous docking of both ends simultaneously. Instead, a segmented docking method is adopted. By first docking the rotating fastening end 3 to the connecting and sliding dismounting end 2, the rotating fastening end 3 can be naturally locked. There is no need to install additional connecting components on the rotating fastening end 3. At the same time, no operation needs to be performed on the rotating fastening end 3 during the process of connecting the locking member 4 to the sliding dismounting end 2. The staff can only focus on the fastening of the sliding dismounting end 2. Therefore, there is no need to perform pre-fastening on the sliding dismounting end 2, and the connection operation can be completed directly by connecting the locking member 4 for fastening.

[0042] Further, in this embodiment, a hollow groove 333 is provided on the fixed base 33. Due to the provision of the hollow groove 333 on the fixed base 33, materials can be saved and the overall weight can be reduced. At the same time, the hollow groove 333 is set to a rounded corner structure, so that the fixed base 33 forms an arch shape, ensuring the structural strength of the fixed base 33. Further, an arc transition surface 334 is provided at the end of the fastening protrusion 332, and relatively, an arc corner 342 is provided on the side of the locking block 34 close to the fastening member 31. The arc corner 342 is provided on the side of the locking block 34 close to the outside. Therefore, during the installation and disassembly process, since it is necessary to rotate with the rotating fastening end 3 as a fulcrum, after the docking is completed, the cross plates 12 of the two split templates 1 are aligned. Therefore, during the rotation process, the two cross plates 12 are vertically displaced. Therefore, the cross plate 12 will come into contact with the locking block 34. Setting the corner where the locking block 34 contacts the cross plate 12 as the arc corner 342 can ensure the smoothness of the connection process without jamming, and at the same time can ensure the smoothness of the rotation process without damaging the locking block 34. The arc transition surface 334 provided on the fastening protrusion 332 can ensure the smooth transition between the fastening protrusion 332 and the vertical plate 11 during the rotation process.

[0043] At the same time, in this embodiment, a hollow side 341 is provided on the locking block 34. The hollow side 341 is provided on the side of the locking block 34 away from the fixed base 33. Therefore, during the process of docking the fastening member 31 and the locking groove 32, the connection situation can be observed through the hollow side 341, and it is convenient for adjustment. Further, production consumables are reduced, and the overall weight is reduced.

[0044] Furthermore, in this embodiment, a reinforcing plate 13 connecting to the fixed base 33 and a fixing rib position 14 connecting to the hollow side 341 are provided on the split template 1. Both the reinforcing plate 13 and the fixing rib position 14 are arranged on the transverse plate 12, which can improve the structural strength of the fixed base 33 and the locking block 34 and prevent deformation and bending during the connection process.

Claims

1. A rotatable and detachable backfill formwork, characterized in that, It includes split templates (1) arranged on both sides of the pipeline. The split templates (1) include a sliding and detachable end (2) and a rotating and fastening end (3). The sliding and detachable end (2) is detachably connected with a locking member (4). The rotating and fastening end (3) includes a fastening member (31) and a locking groove (32). The fastening member (31) is snap-connected to the locking groove (32). The fastening member (31) and the locking groove (32) are respectively arranged on the split templates (1) on both sides of the pipeline.

2. The rotationally detachable backfill formwork according to claim 1, characterized in that, The fastening member (31) is provided with a fastening protrusion (332), and the locking groove (32) is provided with a limiting block (321). When the fastening member (31) is snap-connected to the locking groove (32), the fastening protrusion (332) abuts against the limiting block (321).

3. The rotationally detachable backfill formwork according to claim 2, characterized in that, The split template (1) includes a vertical plate (11) and a horizontal plate (12). The fastening member (31) includes a fixed base (33) connecting the vertical plate (11) and the horizontal plate (12). The fixed base (33) is provided with a fastening plate (331). A fastening protrusion (332) is arranged on the side of the fastening plate (331) away from the vertical plate (11).

4. A rotatable and detachable backfill formwork according to claim 3, characterized in that, The fixed base (33) is provided with a hollow groove (333), and the hollow direction of the hollow groove (333) is the same as the extending direction of the vertical plate (11).

5. The rotationally detachable backfill formwork according to claim 3, characterized in that, The horizontal plate (12) is provided with a reinforcing plate (13), and the reinforcing plate (13) is connected to the fixed base (33).

6. The rotatable and detachable backfill formwork according to claim 2, wherein The fastening protrusion (332) includes an arc transition surface (334).

7. The rotatable and detachable backfill formwork according to claim 1, wherein A locking block (34) is arranged at the end of the split template (1). The locking groove (32) is arranged in the locking block (34). A hollow side (341) is arranged on the side of the locking block (34) away from the fastening member (31).

8. The rotational dismountable backfill formwork according to claim 7, wherein The split template (1) is provided with a fixed rib position (14), and the fixed rib position (14) is connected to the hollow side (341).

9. The rotatable and detachable backfill formwork according to claim 7, wherein, An arc corner (342) is arranged on the side of the locking block (34) close to the fastening member (31).

10. A rotatable and detachable backfill formwork according to any one of claims 1-9, characterized in that, The sliding and detachable end (2) includes stacked connection plates (21) respectively arranged on the split templates (1) on both sides. When the split templates (1) on both sides are butted, the stacked connection plates (21) on both sides overlap up and down. The stacked connection plates (21) are provided with connection holes (22), and the connection holes (22) are connected to the locking member (4).

Citation Information

Patent Citations

  • Hanging mold for shaping reserved hole in kitchen and toilet

    CN214144726U