Detachable scaffold wall connecting piece

Abstract

The utility model discloses a detachable scaffold wall connecting piece, which relates to the field of building construction, and comprises an embedded sleeve, a pouring template, a long bolt and a steel pipe fastener, the long bolt is in threaded fit with the embedded sleeve, the steel pipe fastener is sleeved at the end part of the long bolt, and the pouring template is provided with a through hole matched with the diameter of the embedded sleeve. One side of a hexagon bolt head is inserted into a penetrating hole formed in a pouring formwork, the slope blocks are extruded to elastically contract towards the embedded sleeve at the same time, after penetrating through the penetrating hole, the slope blocks are expanded again under the elastic force action of the elastic component, then the threaded rod is reversely pulled, the end faces of the slope blocks abut against the inner wall of the formwork at the penetrating hole, and the slope blocks are fixed through the threaded rod. The pre-embedded sleeve is fixed through friction force between the pre-embedded sleeve and the threaded rod, then the threaded rod is rotated while pulling is conducted, the plug can be gradually moved into the penetrating hole to achieve the tightening purpose, the situation that the pre-embedded sleeve located in the pouring cavity is fixed through a hand or a tool is avoided, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a detachable scaffolding wall connecting piece. Background Art

[0002] The pre-buried steel pipe method for wall ties is currently the most commonly used method for wall ties, which can play a role in rigid connection. The pre-buried steel pipe method is to bury a short vertical steel pipe about 25cm in the beam before pouring, and expose about 25cm from the back of the beam. After pouring is completed, use a long horizontal steel pipe to connect the vertical pole and the short vertical steel pipe. The advantages of the pre-buried steel pipe method for wall ties are good rigidity and accurate burying position, but the cost is high, the disassembly is troublesome, and the hole left at the back of the masonry must be blocked later, which poses a serious risk of water seepage.

[0003] The patent with announcement number CN221627619U discloses a portable and rotatable external wall scaffolding wall connection structure, including a bolt rod body, a bolt nut and a nut fixing cap. The bolt rod body, the bolt nut and the nut fixing cap are combined to form a pre-embedded bolt. The bolt nut is located on the inner side of the rear end of the bolt rod body, and the nut fixing cap is squeezed and inserted into the rear end of the bolt rod body. The above structure is pre-embedded on the side of the main structure, and there is no need to cut and fill concrete for sealing in the later stage. The secondary structure is completed in one-time construction, and there is no need to seal the remaining hole with concrete in the later stage, which reduces the construction difficulty and construction period.

[0004] In the above structure, the head of the bolt rod is required to support the template used for the main construction structure, and a hole is opened on the template, the sealing screw is inserted into the head of the bolt rod, and the nut on the sealing screw is tightened against the template, so as to fix the embedded bolt. When the nut on the sealing screw is rotated outside the template, it is necessary to hold or use tools to fix the bolt rod in the casting cavity so that the nut outside the template can be smoothly rotated and tightened. When the hole on the template is deeper, the hand or tool will not be able to effectively fix the bolt rod, and then the nut will not be able to be effectively rotated and tightened, which is not practical. Utility Model Content

[0005] The purpose of the present utility model is to provide a detachable scaffolding wall connecting member in order to solve the above-mentioned problem, as described below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A detachable scaffolding connecting member provided by the utility model comprises a pre-embedded sleeve, a casting formwork, a long bolt and a steel pipe fastener. The long bolt is in threaded fit with the pre-embedded sleeve, and the steel pipe fastener is sleeved at the end of the long bolt. A perforation adapted to the diameter of the pre-embedded sleeve is formed in the casting formwork. A hexagonal bolt head is integrally formed at the closed end of the pre-embedded sleeve, and the diameter of the hexagonal bolt head is smaller than that of the pre-embedded sleeve. A threaded hole is formed in the middle of the inner bottom of the pre-embedded sleeve, and a threaded rod is threadedly connected in the threaded hole. The diameter of the threaded rod is smaller than the inner diameter of the pre-embedded sleeve. A plug for blocking the perforation is fixedly connected to the end of the threaded rod. Four U-shaped grooves are evenly formed at the open end of the pre-embedded sleeve. A slope block is arranged in each U-shaped groove, and the tips of the four slope blocks all face the side of the hexagonal bolt head and are connected to the closed end of the U-shaped groove through an elastic member. The elastic member can make the slope block swing along the radial direction of the pre-embedded sleeve.

[0008] When using the above detachable scaffolding connecting member, first rotate the end of the threaded rod and insert it into the threaded hole, and then insert one side of the hexagonal bolt head into the perforation formed in the casting formwork. When several slope blocks abut against the edge of the perforation, under the action of wedge-shaped fit, several slope blocks are extruded and deflected towards the inside of the pre-embedded sleeve at the same time, and the elastic member is driven to undergo elastic deformation until several slope blocks pass through the perforation at the same time. At this time, the pre-embedded sleeve and several slope blocks are both inside the casting cavity side of the casting formwork. The several slope blocks open again under the elastic force of the elastic member, and then pull the threaded rod in the reverse direction to make the end faces of the several slope blocks abut against the inner wall of the formwork at the perforation. The pre-embedded sleeve is fixed through the friction force between the two. Then, while pulling, rotate the threaded rod to gradually move the plug into the perforation to achieve the purpose of tightening. After the casting in the casting cavity is completed, remove the casting formwork, screw out the threaded rod, and then, after sleeving the steel pipe fastener on the long bolt, rotate the long bolt in the pre-embedded sleeve inside the wall to complete the fixation of the connecting member.

[0009] Preferably, the plug is made of rubber and consists of a convex ring part, a cylindrical part and a conical part along its axial direction. The convex ring part is adapted to the inner diameter of the open end of the pre-embedded sleeve, the cylindrical part is adapted to the perforation, and the diameter of the large end of the conical part is larger than the diameter of the perforation.

[0010] Preferably, an auxiliary rotating plate is fixedly connected to the middle of the end face of the conical part.

[0011] Preferably, the elastic member includes a metal elastic sheet fixedly connected to the closed end of the U-shaped groove, and the other end of the metal elastic sheet is fixedly connected to the inside of the slope block and is integrally formed with it.

[0012] Preferably, convex blocks are fixedly connected to both side walls on the open side of the U-shaped groove, and arc grooves sleeved with the convex blocks are formed on both side walls of the slope block.

[0013] Preferably, the end face of the slope block faces the opening side of the C-shaped groove and is flush with the opening end of the embedded sleeve, and a plurality of convex thorns are fixedly connected to the end face of the slope block.

[0014] Preferably, a plurality of convex rings are fixedly connected to the circumferential surface of the embedded sleeve.

[0015] The beneficial effects are as follows:

[0016] By inserting one side of the hexagonal bolt head into the perforation formed in the casting mold, a plurality of slope blocks are extruded and elastically contracted towards the embedded sleeve. When the plurality of slope blocks pass through the perforation, they open again under the elastic force of the elastic member, and then the threaded rod is pulled reversely so that the end faces of the plurality of slope blocks abut against the inner wall of the mold at the perforation. The embedded sleeve is fixed by the frictional force between the two. Subsequently, while pulling, rotating the threaded rod can gradually move the plug into the perforation to achieve the purpose of tightening, avoiding the use of hands or tools to fix the embedded sleeve located inside the casting cavity, and improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional view of the present invention;

[0019] Figure 2 is a split three-dimensional view of the threaded rod of the present invention;

[0020] Figure 3 is a first sectional three-dimensional view of the embedded sleeve of the present invention;

[0021] Figure 4 is a second sectional three-dimensional view of the embedded sleeve of the present invention.

[0022] The description of the reference numerals is as follows:

[0023] 1. Embedded sleeve; 2. Casting mold; 3. Long bolt; 4. Steel pipe fastener; 5. Perforation; 6. Hexagonal bolt head; 7. C-shaped groove; 8. Slope block; 9. Threaded hole; 10. Threaded rod; 11. Plug; 12. Auxiliary rotating plate; 13. Metal elastic sheet; 14. Convex block; 15. Arc-shaped groove; 16. Convex thorn; 17. Convex ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope protected by the present utility model.

[0025] Referring to Figures 1 - 4 As shown, the present utility model provides a detachable scaffold wall connecting member, which includes a pre-embedded sleeve 1, a casting formwork 2, a long bolt 3 and a steel pipe fastener 4. The long bolt 3 is threadedly adapted to the pre-embedded sleeve 1, and the steel pipe fastener 4 is sleeved at the end of the long bolt 3. A perforation 5 adapted to the diameter of the pre-embedded sleeve 1 is provided on the casting formwork 2. A hexagonal bolt head 6 is integrally formed at the closed end of the pre-embedded sleeve 1, and the diameter of the hexagonal bolt head 6 is smaller than the diameter of the pre-embedded sleeve 1. A threaded hole 9 is provided in the middle of the inner bottom of the pre-embedded sleeve 1, and a threaded rod 10 is threadedly connected in the threaded hole 9. The diameter of the threaded rod 10 is smaller than the inner diameter of the pre-embedded sleeve 1. The end of the threaded rod 10 is fixedly connected with a plug 11 for blocking the perforation 5. Four U-shaped grooves 7 are evenly provided at the open end of the pre-embedded sleeve 1. A slope block 8 is provided in each U-shaped groove 7, and the tips of the four slope blocks 8 all face the side of the hexagonal bolt head 6 and are connected to the closed end of the U-shaped groove 7 through an elastic member. The elastic member can make the slope block 8 swing along the radial direction of the pre-embedded sleeve 1.

[0026] Referring to Figure 4 As shown, the plug 11 is made of rubber and consists of a convex ring portion 1102, a cylindrical portion 1101 and a tapered face portion 1103 along its axial direction. The convex ring portion 1102 is adapted to the inner diameter of the open end of the pre-embedded sleeve 1, the cylindrical portion 1101 is adapted to the perforation 5, and the diameter of the large end of the tapered face portion 1103 is larger than the diameter of the perforation 5. After the plug 11 abuts against the open end of the pre-embedded sleeve 1, the convex ring portion 1102 can be fitted with its open end, making the contact between the two more stable and on the same axis. The cylindrical portion 1101 can block the perforation 5 to prevent the casting material from leaking out of the perforation 5. The tapered face portion 1103 can block the outside of the perforation 5 and prevent the outer end of the plug 11 from entering the perforation 5. The pre-embedded sleeve 1 can be fixed on the perforation 5 of the casting formwork 2 through the cooperation of the tapered face portion 1103 and the four slope blocks 8.

[0027] Specifically, an auxiliary rotating plate 12 is fixedly connected to the middle of the end face of the tapered face portion 1103, which is convenient for rotating the threaded rod 10.

[0028] Referring to Figure 3As shown in the figure, the elastic component includes a metal spring piece 13 fixedly connected to the closed end of the C-shaped groove 7, and the other end of the metal spring piece 13 is fixedly connected to the inside of the slope block 8 and integrally formed with it. On both side walls of the opening side of the C-shaped groove 7, there are convex blocks 14 fixedly connected, and on both side walls of the slope block 8, there are arc-shaped grooves 15 sleeved with the convex blocks 14. When the embedded sleeve 1 is inserted into the through hole 5, the through hole 5 squeezes several slope blocks 8 to retract radially along the embedded sleeve 1 in the C-shaped groove 7, and drives the metal spring piece 13 to elastically deform. When the slope block 8 no longer abuts against the through hole 5, under the elastic force of the metal spring piece 13, the four slope blocks 8 simultaneously open outwards. At the same time, under the limitation of the arc-shaped groove 15, the slope block 8 is stably moved between the two convex blocks 14.

[0029] Refer to Figure 2 As shown in FIG. 2 or 3, the end face of the slope block 8 faces the opening side of the C-shaped groove 7 and is flush with the opening end of the embedded sleeve 1. A number of convex thorns 16 are fixedly connected to the end face of the slope block 8. The flush design can make the end faces of several slope blocks 8 abut against the surface of the formwork for pouring 2, and the opening end of the embedded sleeve 1 is flush with the wall surface after pouring and solidification, avoiding the situation of outward protrusion. The design of the convex thorns 16 can, while pulling the threaded rod 10 to drive the end faces of several slope blocks 8 to abut against the surface of the formwork for pouring 2, make several convex thorns 16 penetrate into the surface of the formwork for pouring 2, improving the friction between the two and preventing the embedded sleeve 1 from loosening inside the formwork for pouring 2.

[0030] Specifically, a number of convex rings 17 are fixedly connected to the circumferential surface of the embedded sleeve 1. After the concrete in the formwork for pouring 2 is poured and solidified, the setting of the several convex rings 17 can make the embedded sleeve 1 fit more firmly inside the wall and prevent it from falling off.

[0031] With the above structure, first rotate the end of the threaded rod 10 and insert it into the threaded hole 9, then insert one side of the hexagonal bolt head 6 into the through hole 5 opened on the formwork for pouring 2. When several slope blocks 8 abut against the edge of the through hole 5, under the wedge-shaped cooperation, several slope blocks 8 are squeezed to deflect towards the inside of the embedded sleeve 1 at the same time, and at the same time drive the elastic component to elastically deform until several slope blocks 8 simultaneously pass through the through hole 5. At this time, the embedded sleeve 1 and several slope blocks 8 are both located inside the pouring cavity side of the formwork for pouring 2. The several slope blocks 8 open again under the elastic force of the elastic component. Then, pull the threaded rod 10 in the reverse direction to make the end faces of the several slope blocks 8 abut against the inner wall of the formwork at the through hole 5, and fix the embedded sleeve 1 through the friction between the two. Then, while pulling, rotate the threaded rod 10 to gradually move the plug 11 into the through hole 5 to achieve the purpose of tightening. After the pouring in the pouring cavity is completed, remove the formwork for pouring 2, screw out the threaded rod 10, and then, after sleeving the steel pipe fastener 4 on the long bolt 3, rotate the long bolt 3 in the embedded sleeve 1 inside the wall to complete the fixation of the connecting member between the wall and the formwork.

[0032] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims described above.

Claims

1. A detachable scaffolding wall connecting member, comprising a pre-buried sleeve (1), a casting formwork (2), a long bolt (3) and a steel pipe fastener (4), characterized in that: The long bolt (3) is thread - adapted to the embedded sleeve (1), and the steel pipe fastener (4) is sleeved on the end of the long bolt (3). A perforation (5) adapted to the diameter of the embedded sleeve (1) is provided on the casting formwork (2). A hexagonal bolt head (6) is integrally formed at the closed end of the embedded sleeve (1), and the diameter of the hexagonal bolt head (6) is smaller than the diameter of the embedded sleeve (1). A threaded hole (9) is provided in the middle of the inner bottom of the embedded sleeve (1). A threaded rod (10) is thread - connected in the threaded hole (9), and the diameter of the threaded rod (10) is smaller than the inner diameter of the embedded sleeve (1). The end of the threaded rod (10) is fixedly connected with a plug (11) for blocking the perforation (5). Four U - shaped grooves (7) are evenly provided at the open end of the embedded sleeve (1). A slope block (8) is provided in each U - shaped groove (7), and the tips of the four slope blocks (8) all face the side of the hexagonal bolt head (6) and are connected to the closed end of the U - shaped groove (7) through an elastic member. The elastic member can make the slope block (8) swing along the radial direction of the embedded sleeve (1).

2. A detachable scaffolding wall connecting member according to claim 1, characterized in that: The plug (11) is made of rubber and consists of three parts: a convex ring part (1102), a cylindrical part (1101), and a conical part (1103) along its axial direction. Among them, the convex ring part (1102) is adapted to the inner diameter of the open end of the embedded sleeve (1), the cylindrical part (1101) is adapted to the perforation (5), and the diameter of the large - diameter end of the conical part (1103) is larger than the diameter of the perforation (5).

3. A detachable scaffolding wall connecting member according to claim 2, characterized in that: An auxiliary rotating plate (12) is fixedly connected to the middle of the end face of the conical part (1103).

4. The detachable scaffolding wall connecting member according to claim 1, characterized in that: The elastic member includes a metal spring piece (13) fixedly connected to the closed end of the U - shaped groove (7), and the other end of the metal spring piece (13) is fixedly connected to the inside of the slope block (8) and is integrally formed with it.

5. The detachable scaffolding wall connecting member according to claim 1, characterized in that: Convex blocks (14) are fixedly connected to both side walls on the open - side of the U - shaped groove (7), and arc - shaped grooves (15) for sleeving the convex blocks (14) are provided on both side walls of the slope block (8).

6. The detachable scaffolding wall connecting member according to claim 1, characterized in that: The end face of the slope block (8) faces the open - side of the U - shaped groove (7) and is flush with the open end of the embedded sleeve (1). A number of convex thorns (16) are fixedly connected to the end face of the slope block (8).

7. The detachable scaffolding wall connecting member according to claim 1, characterized in that: A number of convex rings (17) are fixedly connected to the circumferential surface of the embedded sleeve (1).

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