Device and method for forming decorative hole in large external corner part of fair-faced concrete wall

Abstract

The invention belongs to the field of buildings, and relates to a device and a method for forming a decorative hole in a large external corner part of a bare concrete wall. According to the technical scheme, the device comprises a sleeve inserted into a bare concrete wall to be poured and a rotary lining head detachably anchored to the inner side of an external corner wall formwork. One end of the casing pipe is closed, the other end of the casing pipe is provided with an opening, the axis of the casing pipe is perpendicular to the external corner wall formwork, and the casing pipe is anchored on the inner wall of the external corner wall formwork. The rotary lining head is inserted into the casing pipe from the other end of the casing pipe, and a sealing piece used for preventing concrete from entering the casing pipe is arranged at an opening in the other end of the casing pipe.

Description

Technical Field

[0001] The invention belongs to the field of construction, and relates to a device and a method for arranging decorative holes at large positive angles of a fair-faced concrete wall. Background Art

[0002] Fair-faced concrete is a form of expression of architectural aesthetics. Because of its extremely decorative effect, it is also called decorative concrete. It is cast in one step and only shows the natural appearance of concrete. The surface is no longer painted, pasted or otherwise finished. Therefore, it is different from ordinary concrete and is extremely important in the early stage of formwork combination and splicing.

[0003] The surface of fair-faced concrete is mainly reflected in its decorative seams and decorative holes. There are often some problems in the construction of decorative holes. Conventional screw holes in fair-faced concrete walls are pre-arranged, and the priority is to ensure the molding effect. The position cannot be freely selected according to construction requirements. During the construction process, it is inevitable to encounter corners with larger cross-sections. These parts cannot be installed with tension screws. After pouring, the decorative holes in the corners are missing relative to the rest of the surface, and tools are needed to chisel out the decorative holes. It is difficult to modify and the appearance is poor, which affects the overall decorative hole arrangement effect of the fair-faced wall. Summary of the invention

[0004] In order to overcome the above-mentioned problem of arrangement effect of decorative holes in the exposed concrete wall, the present invention provides a device for setting decorative holes at large positive corners of exposed concrete.

[0005] The technical problem to be solved is: in the exposed concrete wall, some large external corners cannot be cast to form decorative holes because the tension screws cannot be installed. These decorative holes are processed by manual chiseling, but the construction of chiseled decorative holes is difficult and the appearance is extremely poor.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a device and method for setting decorative holes at large external corners of fair-faced concrete, which is used to cast neat and beautiful decorative holes at large external corners of fair-faced concrete walls where tension bolts cannot be installed; comprising a rotatable lining head detachably anchored on the inner side of a wall formwork, and a sleeve inserted in the concrete wall to be cast; The sleeve is a round tube with one end closed and the other end open, and the axis is arranged perpendicular to the wall formwork. The easily removable rotating lining head is screwed into the inner wall of the sleeve from the open end of the sleeve, and the removable sleeve is anchored on the inner wall of the formwork; A sealing member is arranged at the opening of the casing to prevent concrete from entering the casing.

[0007] Furthermore, the rotating lining head is anchored to the inner side of the formwork by bolts.

[0008] Furthermore, the rotary lining head includes a plurality of rotary top supports extending into the casing and interlocking with the inner wall of the casing to fix the casing.

[0009] Furthermore, the sleeve is detachably anchored on the rotating top support through a concave groove buckle.

[0010] Furthermore, the sleeve opening is sealed with a collar.

[0011] Furthermore, the rotating lining head includes a bottom ring which is passed through by bolts and anchored on the inner wall of the wall formwork, a sleeve ring which is anchored on the bottom ring and tightly attached to the inner wall of the casing, and a rotating top support which is anchored on the bottom ring and arranged at intervals along the bottom ring; the bolt is locked by a nut after penetrating the external angle wall formwork outward, and a stabilizing gasket is arranged between the nut and the wall formwork; the rotating top support is abutted against the anti-slip protrusion on the inner wall surface of the casing, and the casing is a circular tube, and the inner wall surface of the casing is provided with anti-slip protrusions and corresponding concave grooves, and the concave grooves extend from the open end of the casing along the busbar of the casing to the closed end of the casing, and then bend perpendicular to the busbar of the casing, and the concave grooves are perpendicular to the busbar part of the casing in the same direction and are located on the same section of the casing.

[0012] Furthermore, the sleeve is a round tube, and the rotating lining head is a tube expander with a cylindrical expansion head with adjustable diameter. The expansion head is inserted inwardly into a hole on the wall formwork with the same inner diameter as the sleeve, and the sleeve is sleeved on the free end of the expansion head located on the inner side of the wall formwork; the tube expander has a locking device for locking the size of the expansion head.

[0013] Furthermore, a protective film is wrapped on the expansion head to prevent the inflow of concrete slurry, and a stabilizing gasket for stabilizing the expansion head is sleeved on the part of the expansion head located outside the wall formwork.

[0014] Furthermore, the rotating lining head is a cylindrical water-stopping plug, which is anchored to the inner side of the wall formwork by means of through-hole arranged and threadedly matched bolts, and the sleeve is sleeved on the water-stopping plug and fits tightly with the water-stopping plug.

[0015] The device for setting a decorative hole at a large external corner of a plain concrete wall adopts the above device and method to construct a decorative hole cast in the external corner of the plain concrete, and comprises the following steps: Step 1: Pass the bolt through the bottom ring from the side with the rotating top support, and then pass the bolt through the wall formwork; Step 2: Put the sleeve on the rotating top support so that the anti-slip protrusion enters the concave groove, then rotate the sleeve to lock the sleeve and make the sleeve opening fit with the bottom ring; Step 3: Install the fixing washers and nuts; Step 4: pouring plain concrete; Step 5: After the concrete has finally set, remove the nuts and fixing washers, dismantle the wall formwork, rotate and remove the rotating lining head and bolts, and then remove the sleeve.

[0016] Compared with the prior art, the device for setting decorative holes at large external corners of a plain concrete wall of the present invention has the following beneficial effects: The present invention adopts a rotating lining head in the sleeve serving as a template, and the rotating top support reduces the contact area between the rotating lining head and the sleeve, and the sleeve and the rotating top support are combined by a snap connection, which can disperse the extrusion force concentrated on the sleeve. After the concrete construction is completed, the rotating lining head is taken out, and the sleeve can be easily removed without damaging the rotating lining head and the decorative hole; and when the rotating lining head is fixed with bolts, the shaking of the rotating lining head during concrete pouring can be eliminated by installing a firm gasket on the bolt; the large outer corner can be poured with evenly arranged decorative holes at one time, overcoming the chiseling and later modification operations.

[0017] The device prevents concrete slurry from entering the casing by arranging the sleeve ring, thereby ensuring the aesthetics of the decorative hole at the external corner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a device for setting decorative holes at large positive angles of a plain concrete wall according to the present invention; Figure 2 This is a structural exploded view of a device for setting decorative holes at large positive corners of a fair-faced concrete wall according to the present invention; Figure 3 , 4 A schematic diagram of a device for setting decorative holes at a large positive angle of a fair-faced concrete wall when in use; Figure 5 is a schematic diagram of the structure of the casing; Figure 6 It is a structural schematic diagram of the rotating lining head. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] The following is a detailed description of the device for setting decorative holes at large external corners of a plain concrete wall as described in the present application through an embodiment.

[0022] In some embodiments, Figure 1-3 As shown, a device for setting decorative holes in large external corners of a plain concrete wall is characterized in that it includes: a sleeve 2 inserted in the plain concrete wall to be cast, and a rotating lining head 4 detachably anchored on the inner side of a external corner wall formwork 3.

[0023] The sleeve 2 is a pipe fitting with one end closed and the other end provided with an opening, and the axis of the sleeve 2 is arranged perpendicular to the external angle wall formwork 3 , and the sleeve 2 is anchored on the inner wall of the external angle wall formwork 3 .

[0024] The rotary lining head 4 is inserted into the casing 2 from the other end of the casing 2 , and a sealing member for preventing concrete from entering the casing 2 is provided at the opening of the other end of the casing 2 .

[0025] The rotating lining head 4 is anchored on the external angle wall formwork 3 by bolts 5 .

[0026] In some examples, the sleeve 2 is shorter and the cast decorative hole is shallower, but the depth of the decorative hole can be adjusted accordingly according to actual needs.

[0027] The rotating lining head 4 comprises: a bottom ring and a plurality of rotating top supports 6. The bottom ring is an annular member. The rotating top supports 6 are block structures, and a protrusion is arranged on the outer side of the rotating top supports 6. The rotating top supports 6 are fixed to the side of the bottom ring.

[0028] In some instances, such as Figure 4-5 As shown, the sleeve 2 includes: an outer shell and an anti-slip ring. The outer shell is a pipe, one end of the outer shell is open, and the other end of the outer shell is closed. The anti-slip ring is fixed to the inner wall of the outer shell, and the anti-slip ring is fixed to the other end of the outer shell. The anti-slip ring is provided with a plurality of anti-slip grooves, which are adapted to the protrusions of the plurality of rotating top supports 6, and the protrusions of the plurality of rotating top supports 6 are arranged in the plurality of anti-slip grooves in a one-to-one correspondence.

[0029] A sealing gasket is arranged at the joint position between the opening end of the shell and the bottom ring.

[0030] The bolt 5 is locked by a nut 9 after penetrating the external angle wall formwork 3 , and a stabilizing gasket 10 is arranged between the nut 9 and the wall formwork 3 .

[0031] The bottom ring is provided with an open groove; The rotary lining head 4 also includes an expansion head, which is a conical structure, and the maximum diameter of the expansion head is larger than the inner diameter of the bottom ring. The expansion head is fixed to one end of the bolt 5 close to the bottom ring.

[0032] The expansion head is wrapped with a protective film to prevent the concrete slurry from flowing in.

[0033] In this example, the rotating inner lining head can be made of steel pipe, and a sleeve ring 8 is provided between the bottom ring 7 and the rotating top support 6. The sleeve ring 8 is a ring-shaped part. The bottom ring 7, the rotating top support 6 and the sleeve ring 8 are integrally formed, and a layer of paraffin sealing material is coated on the outer edge of the sleeve ring 8 to enhance the sealing effect and facilitate disassembly. The rotating top support 6 itself is elastic and convenient to remove when removing the mold; the surface of the bottom ring 7 against the wall template 3 is also coated with paraffin sealing material to enhance the sealing effect and prevent the concrete slurry from flowing out; the bottom ring 7 is provided with an anti-skid protrusion inside, and the anti-skid protrusion is provided in conjunction with the expansion head to prevent the rotating inner lining head from moving relative to the bolt 5.

[0034] like Figure 3 As shown, a device for setting a decorative hole at a large positive corner of a fair-faced concrete wall adopts the above-mentioned device and method, and includes the following steps: Step 1: Fix the bolt 5 on the external angle wall formwork 3; Step 2: Insert the rotating lining head 4 into the sleeve 2, and insert the rotating lining head 4 into the expansion head fixed on the end of the bolt, so that the rotating lining head 4 fits with the external angle wall formwork 3, and the sleeve 2 fits with the rotating lining head 4; Step 3: pouring plain concrete; Step 4: After the concrete solidifies, remove the external angle wall formwork 3, take out the bolts 5, then rotate and take out the rotating lining head 4, and then take out the sleeve 2.

[0035] If a small number of decorative holes need to be cast, the decorative hole device can also be designed in the following styles: The sleeve 2 is a round tube, and the rotating inner lining head 4 is a tube expander with a cylindrical expansion head with an adjustable diameter. The expansion head is inserted inwardly into a hole on the outer corner wall formwork 3 with the same inner diameter as the sleeve 2, and the sleeve 2 is sleeved on the free end of the expansion head located on the inner side of the outer corner wall formwork 3; the tube expander is provided with a locking device for locking the size of the expansion head. A protective film is wrapped on the expansion head to prevent the inflow of concrete slurry, and a stabilizing gasket 10 for stabilizing the expansion head is sleeved on the part of the expansion head located on the outer side of the outer corner wall formwork 3. The expansion head is inserted into a hole on the outer corner wall formwork 3 with the same inner diameter as the sleeve 2 to ensure that the expansion head can be fixed on the wall formwork 3 while supporting the sleeve 2, and complete the sealing of the hole and the sleeve 2. The protective film also has a sealing effect to prevent concrete from entering the sleeve 2 or flowing out of the wall formwork 3.

[0036] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0037] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A device for setting decorative holes at large sun angles on a plain concrete wall, characterized in that: include: A sleeve inserted into the exposed concrete wall to be poured, and a detachable rotating lining head anchored to the inside of the external corner wall formwork; The sleeve is a pipe with one end closed and the other end provided with an opening, and the axis of the sleeve is arranged perpendicular to the external angle wall formwork, and the sleeve is anchored on the inner wall of the external angle wall formwork; The rotating lining head is inserted into the casing from the other end of the casing, and a sealing member for preventing concrete from entering the casing is arranged at the opening of the other end of the casing.

2. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 1, characterized in that: The rotating lining head is anchored on the external angle wall formwork by bolts.

3. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 2, characterized in that: The rotary lining head comprises: Bottom ring: The bottom ring is a ring-shaped part. A plurality of rotating top supports are provided, each of which is a block-shaped structure and has a protrusion on the outer side thereof. The rotating top supports are fixed to the side surface of the bottom ring.

4. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 3, characterized in that: The sleeve comprises: A shell, wherein the shell is a tube, one end of the shell is open, and the other end of the shell is closed; An anti-slip ring is fixed to the inner wall of the shell, and the anti-slip ring is fixed to the other end of the shell, and a plurality of anti-slip grooves are arranged on the anti-slip ring, and the plurality of anti-slip grooves are adapted to the protrusions of the plurality of rotating top supports, and the protrusions of the plurality of rotating top supports are arranged in the plurality of anti-slip grooves in a one-to-one correspondence.

5. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 4, characterized in that: A sealing gasket is arranged at the joint position between the opening end of the shell and the bottom ring.

6. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 5, characterized in that: The bolt is locked by a nut after penetrating the external angle wall formwork, and a stabilizing gasket is arranged between the nut and the wall formwork.

7. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 6, characterized in that: The bottom ring is provided with an open groove; The rotary lining head also includes an expansion head, which is a conical structure, and the maximum diameter of the expansion head is larger than the inner diameter of the bottom ring. The expansion head is fixed to one end of the bolt close to the bottom ring.

8. The device for setting decorative holes at large external corners of a fair-faced concrete wall according to claim 7, characterized in that: The expansion head is wrapped with a protective film to prevent the concrete slurry from flowing in.

9. A device for setting a decorative hole at a large sun angle of a fair-faced concrete wall, applicable to the device for setting a decorative hole at a large sun angle of a fair-faced concrete wall as claimed in any one of claims 1 to 8, characterized in that: The method for setting a decorative hole at a large positive corner of a fair-faced concrete wall comprises: Step 1: Fix the bolts on the external angle wall formwork; Step 2: Insert the rotating lining head into the sleeve, and insert the rotating lining head into the expansion head fixed on the end of the bolt, so that the rotating lining head fits with the external angle wall template, and the sleeve fits with the rotating lining head; Step 3: pouring plain concrete; Step 4: After the concrete solidifies, remove the external angle wall formwork, take out the bolts, then rotate and take out the rotating lining head, and then take out the sleeve.

Images