A conical bolt for pre-buried holes in building walls

Abstract

The present invention discloses a conical bolt for a pre-buried hole in a building wall, comprising a conical bolt, a bolt, a nut and a pressure cap. The conical bolt is in a truncated cone shape, a circular hole penetrating the conical bolt is provided at the center of the conical bolt, a large end of the conical bolt is rotatably connected to the bolt, a disc is provided in the middle of the bolt, the disc separates the bolt into an outer bolt and an inner bolt, the pressure cap is sleeved on the outer bolt and threadedly connected to the outer bolt, and the nut is threadedly connected to the outer bolt. The present invention is environmentally friendly and energy-saving, has an accurate pre-buried position, is not easy to be misplaced, is simple to operate, can be recycled, can replace traditionally used PVC pipes, has strong practicality, and greatly reduces engineering costs.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a conical bolt for a pre-buried hole in a building wall. Background Art

[0002] Currently, in construction and installation projects, a pre-buried pipe is usually placed in the floor slab concrete formwork when pouring concrete. The pipe can be directly installed after the floor slab concrete formwork is removed. However, the existing pre-buried pipe is a disposable product in use and cannot be reused, which increases the cost of the construction project.

[0003] Therefore, a reusable conical bolt for pre-embedded holes in building walls has become a problem that needs to be solved urgently. Summary of the Invention

[0004] The purpose of the invention is to provide a conical bolt for a pre-buried hole in a wall which is reusable and saves construction costs.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a conical bolt for a pre-embedded hole in a building wall, comprising a conical bolt, a bolt, a nut and a pressure cap, wherein the conical bolt is in the shape of a truncated cone, a circular hole penetrating the conical bolt is provided in the center of the conical bolt, the large head end of the conical bolt is rotatably connected to the bolt, a disc is provided in the middle of the bolt, the disc separates the bolt into an outer bolt and an inner bolt, the pressure cap is sleeved on the outer bolt and threadedly connected to the outer bolt, and the nut is threadedly connected to the outer bolt.

[0006] As an improvement, a hollow cone is provided at one end of the large head of the conical bolt, the diameter of one end of the hollow cone is the same as the diameter of the large head of the conical bolt, and the diameter of the other end is the same as the diameter of the disc.

[0007] As an improvement, a threaded hole is provided in the hollow cone, and the threaded hole extends from the hollow cone to the tapered bolt. The threaded hole is threadedly connected to the inner bolt, and the length of the threaded hole is the same as the length of the inner bolt.

[0008] As an improvement, the inner diameter of the gland is slightly larger than the diameter of the disc, and the gland is sleeved on the outside of the disc.

[0009] The advantages of the present invention compared with the prior art are: the present invention is environmentally friendly and energy-saving, the pre-buried position is accurate, not easy to dislocate, the operation is simple, and it can be recycled. It can replace the traditional PVC pipe, has strong practicality, and greatly reduces engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a structural schematic diagram of a conical bolt for a pre-buried hole in a building wall.

[0011] Figure 2 It is a front view of a tapered bolt for a pre-buried hole in a building wall according to the present invention.

[0012] Figure 3 The present invention is a top view of a conical bolt for a pre-buried hole in a building wall.

[0013] Figure 4 It is a left view of a conical bolt for a pre-buried hole in a building wall according to the present invention.

[0014] Figure 5 The invention is a conical bolt for pre-buried holes in building walls. Figure 2 Cross-section at AA.

[0015] Figure 6 The invention is a conical bolt for pre-buried holes in building walls. Figure 2 Enlarged view of the structure at point B in the middle.

[0016] Figure 7 This is a structural diagram of a conical bolt for a pre-buried hole in a building wall according to the present invention. Figure 1 .

[0017] Figure 8 This is a structural diagram of a conical bolt for a pre-buried hole in a building wall according to the present invention. Figure 2 .

[0018] As shown in the figure: 1. Conical bolt, 2. Bolt, 3. Nut, 4. Pressure cap, 5. Round hole, 6. Disc, 7. External bolt, 8. Internal bolt, 9. Hollow cone, 10. Threaded hole. DETAILED DESCRIPTION

[0019] The following is a further detailed description of a conical bolt for a pre-buried hole in a building wall according to the present invention with reference to the accompanying drawings.

[0020] Combined with attachment Figure 1-8 , the present invention is introduced in detail.

[0021] A conical bolt for a pre-buried hole in a building wall comprises a conical bolt 1, a bolt 2, a nut 3 and a pressure cap 4. The conical bolt 1 is truncated into a cone shape, and a circular hole 5 is provided in the center of the conical bolt 1 to penetrate the conical bolt 1. The large end of the conical bolt 1 is rotatably connected to the bolt 2. A disc 6 is provided in the middle of the bolt 2. The disc 6 separates the bolt 2 into an outer bolt 7 and an inner bolt 8. The pressure cap 4 is sleeved on the outer bolt 7 and is threadedly connected to the outer bolt 7. The nut 3 is threadedly connected to the outer bolt 7.

[0022] A hollow truncated cone 9 is provided at one end of the large end of the conical bolt 1 . The diameter of one end of the hollow truncated cone 9 is the same as the diameter of the large end of the conical bolt 1 , and the diameter of the other end is the same as the diameter of the disc 6 .

[0023] A threaded hole 10 is provided in the hollow cone 9 , and the threaded hole 10 extends from the hollow cone 9 into the tapered bolt 1 . The threaded hole 10 is threadedly connected to the inner bolt 8 , and the length of the threaded hole 10 is the same as that of the inner bolt 8 .

[0024] The inner diameter of the gland 4 is slightly larger than the diameter of the disc 6 , and the gland 4 is sleeved on the outside of the disc 6 .

[0025] The specific implementation process of the tapered bolt for pre-embedded holes in building walls of the present invention is as follows:

[0026] The small end of the tapered bolt 1 is buried in the wall, and the large end is flush with the wall surface. The inner bolt 8 passes through the template and cooperates with the threaded hole 10 of the tapered bolt 1 to quickly lock the template; after removing the template, the inner bolt 8 and the threaded hole 10 are tightened, and the pressure cap 4 is put on the outside of the disc 6. When the pressure cap 4 contacts the wall, a certain gap is left between the bottom of the pressure cap 4 and the disc 6. The nut 3 is put on the outer bolt 7, and the nut 3 is rotated. By tightening the nut 3, the pressure cap 4 is squeezed on the wall surface. Since the pressure cap 4 has been in contact with the wall surface and there is a certain gap between the inside of the pressure cap 4 and the disc 6, the inner bolt 8 and the threaded hole 10 are tightened, so the pressure causes the inner bolt 8 to drive the tapered bolt 1 to be pulled out of the wall; the pulled out tapered bolt 1 can be reused many times, saving construction costs.

[0027] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A conical plug for a pre-buried hole in a building wall, characterized by: The invention comprises a conical bolt (1), a bolt (2), a nut (3) and a pressure cover (4), wherein the conical bolt (1) is in a truncated cone shape, a circular hole (5) penetrating the conical bolt (1) is provided at the center of the conical bolt (1), a large end of the conical bolt (1) is rotatably connected to the bolt (2), a disc (6) is provided in the middle of the bolt (2), and the disc (6) separates the bolt (2) into an outer bolt (7) and an inner bolt (8), the pressure cover (4) is sleeved on the outer bolt (7) and is threadedly connected to the outer bolt (7), and the nut (3) is threadedly connected to the outer bolt (7); A hollow truncated cone (9) is provided at one end of the large end of the conical bolt (1), wherein the diameter of one end of the hollow truncated cone (9) is the same as the diameter of the large end of the conical bolt (1), and the diameter of the other end is the same as the diameter of the disc (6); The inner diameter of the pressure cover (4) is slightly larger than the diameter of the disc (6), and the pressure cover (4) is sleeved on the outside of the disc (6).

2. The tapered bolt for pre-buried holes in building walls according to claim 1, characterized in that: A threaded hole (10) is provided in the hollow truncated cone (9), and the threaded hole (10) extends from the hollow truncated cone (9) to the inside of the tapered bolt (1). The threaded hole (10) is threadedly connected to the inner bolt (8), and the length of the threaded hole (10) is the same as the length of the inner bolt (8).

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