Novel sleeve expansion bolt composite connection rigid wall connecting piece

Abstract

The utility model discloses a novel sleeve expansion bolt composite connection rigid wall connecting piece which is composed of a main body structure embedded part and a steel pipe with a screw rod, and the steel pipe with the screw rod is formed by tightly connecting a connecting screw rod and a wall connecting piece steel pipe according to the expansion screw principle. The wall connecting piece connects the steel pipe with the screw and the embedded connecting sleeve through the internal and external tooth connecting nut, so that a complete rigid wall connecting piece system is formed. The novel wall connecting piece is pre-assembled and then embedded in a beam concrete structure before beam slab concrete pouring, and the rigid wall connecting piece is formed after concrete pouring is completed. The wall connecting piece is fast to mount and dismount, and the combined rigid wall connecting piece is reliable in safety. The wall connecting piece is installed before beam and slab concrete pouring, the safety of the outer frame is guaranteed, the blind holes are small in aperture after the wall connecting piece is dismantled, and repairing is fast and good in effect. The wall connecting piece and the outer frame are synchronously dismantled after outer wall construction is completed, the safety of the outer frame is guaranteed, and the influence of the outer frame on the construction period is reduced.

Description

Technical Field

[0001] The utility model relates to a rigid wall connecting piece for an external frame of a building construction project, in particular to a novel sleeve-expansion bolt composite connection rigid wall connecting piece. Background Art

[0002] Existing steel pipe external scaffolding usually uses short steel pipes embedded in the beam structure as the anchoring points of the wall ties. The embedded parts usually use steel pipes of the same specifications as the external scaffolding, and the external scaffolding is connected with right-angle fasteners to form rigid wall ties. This type of external frame wall ties has hidden dangers in terms of quality, safety, and progress. During the exterior wall decoration construction, the steel pipe wall ties need to be re-engaged to the bed column before the original wall ties can be removed. In actual construction, the original wall ties are often removed without supplementary pulling, and the wall ties are easily insufficiently firm when supplemented to the window. This affects the safety of the external scaffolding, and in serious cases, the external frame is severely deformed or even collapsed.

[0003] In addition, the short steel pipes embedded in the steel pipe wall parts form holes in the wall. Later, it is necessary to cut off the embedded short steel pipes, fill the holes, and repair the exterior walls. There are problems such as cumbersome procedures, poor repair appearance, and easy leakage at the repaired parts. The removal of traditional steel pipe wall parts requires the steps of changing the external frame to tie, removing the original wall parts, filling the hole of the wall parts, plastering the hole, puttingtying the hole, and painting the hole. This is done section by section according to the cantilever section, which delays the construction period a lot, resulting in the inability to remove the external frame according to the node construction period requirements, thus affecting the delivery and use of the entire project. Utility Model Content

[0004] In order to overcome the problems of existing steel pipe wall ties that are inconvenient to install, difficult to dismantle, complicated subsequent procedures, and external wall leakage, the utility model provides a new type of rigid wall tie that does not require dismantling, can be quickly connected, and is easy to process and use. Compared with traditional steel pipe wall ties, it can avoid the need for changing the tie-tying procedure while ensuring safety, reduce the workload of hole repair, and is easy to install and use, effectively reducing the construction period.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a new type of sleeve-expansion bolt composite connection rigid wall connection piece, which includes a pre-buried external thread sleeve, internal and external thread connection nuts, a connection screw, an expansion connection mechanism, and a wall connection piece steel pipe. The expansion connection mechanism combines one end of the connection screw with the wall connection piece steel pipe to form a steel pipe with a screw, and the other end of the connection screw is covered with a pre-buried external thread sleeve, which is buried in the beam concrete structure before the beam and slab concrete is poured, and a rigid wall connection piece is formed after the concrete pouring is completed.

[0006] The above-mentioned new sleeve-expansion bolt composite connection rigid wall connection part is anchored into the beam-slab concrete structure through the pre-embedded connection sleeve, and the steel bar screw connection is first put on the internal and external thread connection nut, and then combined with the pre-embedded external thread sleeve for connection. When removing the connection screw, the connection screw can be taken out by unscrewing the internal connection thread sleeve, and then the rigid wall connection part can be removed.

[0007] The above-mentioned new type of sleeve-expansion bolt composite connection rigid wall connecting part, the steel pipe with screw is fixed by the expansion bolt principle, the sleeve inside the steel pipe is suitable for the size of the plastic expansion lining, the expansion bolt is inserted, the expansion bolt is tightened to tighten the plastic expansion lining and the steel pipe to form a steel pipe with screw, which is firm and reliable in force.

[0008] The above-mentioned new type of sleeve-expansion bolt composite connection rigid wall connection parts, the whole set of rigid wall connection parts system can be batch processed and pre-assembled in advance, and installed from the top of the formwork beam before pouring the beam and slab concrete. The steel pipe with screw rod is connected with the external scaffolding using right-angle fasteners, and the rigid wall connection part system is formed after pouring the beam and slab concrete.

[0009] The above-mentioned new sleeve-expansion bolt composite connection rigid wall connection piece is installed and removed synchronously with the external scaffolding, leaving a blind hole after removal, making it convenient and quick to repair the external wall, simplifying the construction process and reducing the construction period. The other materials of the pre-embedded external threaded sleeve can be repeatedly used after removal, which is convenient to install and saves processing procedures, and has good economic effects.

[0010] The beneficial effect of the utility model is that the new sleeve-expansion bolt composite connection rigid wall connection piece directly optimizes the two cumbersome and time-consuming processes of changing the wall connection piece and repairing the hole at the wall connection piece, and the exterior wall repair has a good appearance, effectively reduces the construction period of dismantling the external frame, and significantly reduces the construction period required for the external frame to be dismantled, ensuring that the project construction reaches the expected node smoothly. It is also superior to ordinary pre-buried steel pipe wall connections in terms of economy, stability, safety, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 This is an overall schematic diagram of the wall connecting member of the utility model;

[0013] Figure 2 This is a schematic diagram of the pre-buried connection of the utility model;

[0014] Figure 3 This is a schematic diagram of removing the internal and external thread nut of the utility model;

[0015] Figure 4 This is a schematic diagram of the screw removal of the utility model;

[0016] Figure 5 This is a schematic diagram of the expansion connection of a steel pipe with a screw rod according to the utility model;

[0017] Figure 6 This is a schematic diagram of the connection of the internal and external thread nuts of the utility model;

[0018] In the attached figure, 1. beam and slab concrete; 2. wall; 3. external scaffolding; 4. steel pipe with screw; 5. embedded external threaded sleeve; 6. internal and external thread connecting nut; 7. connecting screw; 8. expansion lining; 9. expansion expansion sheet; 10. tightening nut; 11. blind hole in the external wall. DETAILED DESCRIPTION

[0019] [Example 1]

[0020] like Figure 1 As shown, the rigid wall connection parts are composed of the pre-embedded external threaded sleeve 5 and the steel pipe with screw 4 connected at both ends of the connecting screw 7. Before the beam and slab concrete is poured, the beam top connecting part is pre-embedded in the beam, and the steel pipe with screw 4 is buckled on the external scaffolding to form a rigid wall connection part system.

[0021] [Example 2]

[0022] like Figure 2 As shown, the embedded external thread sleeve 5 is made of a steel straight thread sleeve, and the connecting screw 7 is connected by an internal and external thread connecting nut 6 in the middle to form a strong connection structure. The connecting screw 7 is bent at an angle of 30-45°, which is convenient for screwing out the internal and external thread connecting nut 6 during later removal to loosen and remove the connecting screw 7. The embedded external thread sleeve 5 is made of a steel straight thread sleeve, and the surface has a crescent pattern to enhance the grip and ensure reliable anchoring.

[0023] [Example 3]

[0024] like Figure 3 As shown, the middle of the embedded external thread sleeve 5 is connected to the connecting screw 7 through the internal and external thread connecting nut 6 to form a firm connecting structure. When installing, it is assembled in advance and embedded in the beam structure from the top of the beam. When removing, the connecting screw 7 can be loosened by screwing out the internal and external thread connecting nut 6, which is convenient for installation and removal.

[0025] [Example 4]

[0026] like Figure 2 As shown, when burying the rigid wall connection, the embedded external thread sleeve 5 should not exceed the wall surface to prevent the subsequent repair of bulges or rust spots. The internal and external thread connection nuts 6 should be exposed to the wall surface to facilitate the later removal of the connection screw 7. The angle of the connection screw 7 should be suitable for easy removal. After removing the connection screw 7, the blind hole 11 of the external wall is formed, and the corresponding blind hole repair work should be carried out in time.

[0027] [Example 5]

[0028] like Figure 4 As shown, the steel pipe with screw rods is a steel pipe with a wall connection that is tightly connected to the connecting screw rod 7 by using the principle of expansion screws. It is composed of the connecting screw rod 7, expansion lining 8, expansion expansion piece 9, and tightening nut 10. When in use, tighten the tightening nut 10, and the nut is tightened to expand the expansion expansion piece 9, and then tighten the expansion lining 8, so as to be tightly connected with the steel pipe to form a reliable steel pipe with screw rods. The expansion expansion piece 9 is a finished expansion bolt with the same diameter as the connecting screw rod 7. The intermediate screw rod is replaced with the connecting screw rod 7, and the expansion lining 8 is cut from a plastic sleeve of suitable size.

[0029] [Example 6]

[0030] like Figure 6 As shown, the new practical rigid wall connecting piece can be kept until all the processes of the exterior wall are completed before being removed. The rigid wall connecting piece and the exterior frame are removed one day in advance and the blind holes 11 of the exterior wall are repaired in time. The rigid wall connecting piece is removed layer by layer, and the blind holes 11 of the exterior wall are repaired layer by layer, and then the exterior scaffolding is removed layer by layer. When removing the exterior scaffolding 3, the steel pipe with screw rod can be removed as a whole after the internal and external thread connection nuts 6 are screwed out. After removing the rigid wall connecting piece, the blind holes 11 of the exterior wall are left on the exterior wall. After the corresponding repairs are made, the exterior scaffolding 3 is removed layer by layer according to the construction sequence. Except for the embedded external threaded sleeve 5, other materials can be used after removal.

Claims

1. A new type of sleeve expansion bolt composite connection rigid wall connection part, comprising a pre-buried external thread sleeve (5), an internal and external thread connection nut (6), a connection screw (7), an expansion connection mechanism, and a wall connection part steel pipe; the expansion connection mechanism combines one end of the connection screw (7) with the wall connection part steel pipe to form a steel pipe with a screw (4), and the other end of the connection screw (7) is covered with a pre-buried external thread sleeve (5), which is buried in the beam concrete structure before the beam and slab concrete is poured, and a rigid wall connection part is formed after the concrete pouring is completed.

2. The new type of sleeve expansion bolt composite connection rigid wall connecting member according to claim 1 is characterized in that The embedded external thread sleeve (5) is a steel straight thread sleeve, and is connected to the connecting screw (7) through an internal and external thread connecting nut (6) in the middle to form a firm connection structure; the connecting screw (7) is bent within an angle range of 30-45 degrees, and when removing, the internal and external thread connecting nut (6) is screwed out to loosen the connecting screw (7).

3. The new type of sleeve expansion bolt composite connection rigid wall connecting member according to claim 1 is characterized in that The screw-rod steel pipe (4) is composed of a connecting screw (7), an expansion lining (8), an expansion expansion piece (9), a tightening nut (10) and a wall connection piece steel pipe. When in use, the tightening nut (10) is tightened, and the nut is tightened to expand the expansion expansion piece (9), thereby tightening the expansion lining (8), thereby tightly connecting with the wall connection piece steel pipe to form a reliable screw-rod steel pipe (4).

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