A device and method for upward drilling and implanting steel bars in concrete

Abstract

The present invention discloses a device and a method for implanting steel bars by upward drilling in concrete, belonging to the technical field of concrete structure reinforcement tools. By aligning the main pipe with the drill hole, connecting the side pipe to the main pipe, and connecting the glue injector to the side pipe, glue can be injected into the upward drill hole of the concrete structure. The steel bar passes through the main pipe through the pressing cylinder and enters the drill hole. Tighten the pressing cylinder to cause the airbag ring to deform, with the inner diameter becoming smaller and the outer diameter becoming larger, respectively squeezing the outside of the steel bar and the inside of the main pipe annular groove to fix the height position of the steel bar and seal the steel bar and the main pipe. At this time, inject the steel bar planting glue, and the steel bar planting glue can be injected into the hole. This structure fixes the steel bar while forming a single channel between the drill hole and the glue injector, supports and fixes the steel bar, eliminates the need to fix the steel bar during glue injection, avoids the steel bar from sliding down, and also ensures the unidirectionality of the glue injection channel during fixation. This device is suitable for the glue injection and steel bar implantation operation with the drill hole facing upward in the concrete structure, and the steel bar planting glue will not leak out, and the operation is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete structure reinforcement tools, and particularly relates to a device and a use method for upward drilling and implanting steel bars in concrete. Background Art

[0002] Building facilities such as bridges and houses all utilize concrete structures. Concrete structures have strong mechanical structures for support and shielding. Concrete has strong compressive and impact resistance capabilities, but weak anti-bending and tensile capabilities. Therefore, various steel bars need to be embedded during the concrete pouring process to enhance its anti-bending and tensile capabilities. In some completed concrete structures, if reinforcement is required, hole-implanted steel bars are needed to connect the new structure with the original structure to achieve the function of continued construction. Steel bar implantation in concrete is a commonly used reinforcement technique in building structure reinforcement, mainly using a special structural adhesive to implant ribbed steel bars or fully threaded screw rods into the concrete.

[0003] In some special projects, it is often necessary to drill holes and implant steel bars at the bottom of concrete components. This requires drilling holes, implanting steel bars, and injecting glue at the bottom of the concrete components. However, in such cases, if the traditional steel bar implantation construction method is followed during specific construction, the structural adhesive poured into the hole and the implanted steel bars will fall downward due to the action of gravity and cannot be injected into the hole to ensure the effect of steel bar implantation. Therefore, when implanting steel bars at the bottom of concrete components, due to the downward drilling of the holes, the falling of the steel bars and the downward drop of the steel bar implantation glue are both difficult problems to overcome. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device and a use method for upward drilling and implanting steel bars in concrete, to provide support for upward steel bar implantation in concrete and ensure the easy operation of upward steel bar implantation.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention includes a main pipe, a side pipe, and a blocking part; an opening aligned with the concrete drilling is provided at the upper end of the main pipe, the blocking part is arranged at the lower end of the main pipe, and the side pipe is communicated with the side of the main pipe; the blocking part includes an airbag ring and a pressing cylinder. A ring groove recessed inward is provided in a section of the main pipe near the lower end, the airbag ring is arranged in the ring groove, and the pressing cylinder is threadedly connected to the inner side of the lower end of the main pipe. By rotating the pressing cylinder, the pressing cylinder presses the airbag to seal and clamp the steel bar.

[0007] Further, it further includes an elastic rubber ring. There is also a ring platform at the upper end of the main pipe. A number of sliding columns are vertically slidably arranged inside the ring platform. The sliding columns are arranged around the reinforcing bar. A sliding cylinder is slidably arranged in the middle section of the main pipe. The end of the sliding column is fixedly connected to the sliding cylinder. Move the sliding cylinder to make the sliding column extend out of and retract into the ring platform. When the sliding column extends out of the ring platform, the elastic rubber ring is sleeved outside a number of the sliding columns. The extending length of the sliding column is less than the thickness of the elastic rubber ring.

[0008] Further, a number of support columns are also annularly arranged on the side surface of the main pipe. The support column includes a cross beam, an upper rod, a threaded cylinder and a lower rod. The end of the cross beam is fixed to the side surface of the main pipe. The upper end of the upper rod is hinged to the outer end of the cross beam. The threaded cylinder is threadedly connected to the lower end of the upper rod. The lower rod is threadedly connected to the lower end of the threaded cylinder. The thread directions at both ends of the threaded cylinder are opposite. Rotating the threaded cylinder can adjust the relative distance between the upper rod and the lower rod. The length of the lower rod is selected according to the distance between the operation platform and the drilling position.

[0009] Further, a stop platform is also fixed in the middle section of the sliding column. The stop platform is slidably arranged inside the ring platform. A support spring is arranged between the stop platform and the ring platform.

[0010] Further, the sliding column is bent inwards to form a push plate. After the elastic rubber ring is sleeved on the reinforcing bar, move the sliding cylinder forward to make the push plate push the elastic rubber ring into the drilling hole.

[0011] Further, a resisting block is also arranged between the pressing cylinder and the air bag. A protrusion is arranged on the outer side of the resisting block. The resisting block is slidably arranged inside the main pipe. The protrusion is slidably arranged inside the side wall of the main pipe.

[0012] The present invention also proposes a using method of a device for implanting reinforcing bars by upward drilling in concrete, and the steps are as follows

[0013] S1: Drill a hole upwards from the bottom surface of the concrete structure;

[0014] S2: Clamp the elastic rubber ring around the sliding columns, and align the reinforcing bar implanting device with the drilling hole;

[0015] S3: The support columns support on the operation platform, and adjust the threaded column to make the reinforcing bar implanting device abut against the bottom surface of the concrete structure;

[0016] S4: Pass the reinforcing bar through the pressing cylinder and the main pipe in sequence and extend it into the drilling hole, and rotate the pressing cylinder to make the air bag clamp and seal on the side surface of the reinforcing bar;

[0017] S5: Connect the glue injection gun to the side pipe and inject glue;

[0018] S6; Move the sliding cylinder downwards to make the elastic rubber ring sleeve on the reinforcing bar, and push the sliding cylinder upwards to make the sliding column abut against the elastic rubber ring and extend it into the drilling hole.

[0019] S7: Remove the entire device downward, limit the downward movement position of the steel bar through the fixing device, and remove it after the implanting glue has solidified.

[0020] The beneficial effects of the present invention are as follows:

[0021] In the present invention, by aligning the main pipe with the drilling hole, connecting the side pipe to the main pipe, and connecting the glue injector to the side pipe, glue can be injected into the upward-facing drilling hole in the concrete structure. The steel bar passes through the main pipe through the pressing cylinder and enters the drilling hole. Tighten the pressing cylinder to deform the airbag ring, reduce the inner diameter, and increase the outer diameter, respectively squeezing the outside of the steel bar and the inside of the main pipe annular groove to fix the height position of the steel bar and seal the steel bar and the main pipe; at this time, inject the implanting glue, and the implanting glue can be injected into the drilling hole. This structure fixes the steel bar while forming a single channel between the drilling hole and the glue injector, supports and fixes the steel bar, eliminates the need to fix the steel bar during glue injection, avoids the steel bar from sliding down, and also ensures the one-way nature of the glue injection channel during fixation. This device is suitable for the glue injection and steel bar implanting operation with the drilling hole facing upward in the concrete structure, and the implanting glue will not leak out, and the operation is simple.

[0022] Other advantages, objectives, and features of the present invention will be described in the subsequent specification, and to some extent, will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0024] Figure 1 It is a working schematic diagram of the steel bar implanting device according to an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the steel bar implanting device according to an embodiment of the present invention;

[0026] Figure 3 It is a cross-sectional view of the steel bar implanting device according to an embodiment of the present invention;

[0027] Figure 4 For Figure 3 The enlarged schematic diagram at A;

[0028] Figure 5 It is a structural schematic diagram of the abutting block according to an embodiment of the present invention;

[0029] The markings in the attached drawings are as follows: 1, main pipe; 11, annular platform; 12, sliding column; 13, sliding cylinder; 14, retaining platform; 15, spring; 16, push plate; 2, side pipe; 3, sealing part; 31, airbag ring; 32, pressing cylinder; 33, abutting block; 331, protrusion; 4, elastic rubber ring; 5, support column; 51, cross beam; 52, upper rod; 53, threaded cylinder; 54, lower rod. Detailed implementation mode

[0030] As Figures 1 to 5 shown, the present invention discloses a device for implanting steel bars by upward drilling in concrete, including a main pipe 1, a side pipe 2 and a sealing part 3; as Figure 2 and Figure 3 shown, an opening aligned with the concrete drilling is provided at the upper end of the main pipe 1, the sealing part 3 is arranged at the lower end of the main pipe 1, and the side pipe 2 communicates with the side of the main pipe 1; the sealing part 3 includes an airbag ring 31 and a pressing cylinder 32. An annular groove recessed inward is provided in the section of the main pipe 1 near the lower end. The airbag ring 31 is arranged in the annular groove, and the pressing cylinder 32 is threadedly connected to the inner side of the lower end of the main pipe 1. By rotating the pressing cylinder 32, the pressing cylinder 32 presses the airbag, so that the airbag seals and clamps the steel bar.

[0031] In this solution, by aligning the main pipe 1 with the drilling, connecting the side pipe 2 to the main pipe 1, and connecting a glue injector to the side pipe 2, the glue can be injected into the upward drilling of the concrete structure. The steel bar passes through the main pipe 1 through the pressing cylinder 32 and enters the drilling. Tighten the pressing cylinder 32 to make the airbag ring 31 deform, the inner diameter becomes smaller, and the outer diameter becomes larger, respectively squeezing the outside of the steel bar and the inner side of the annular groove of the main pipe 1 to fix the position and height of the steel bar, and seal the steel bar and the main pipe 1; at this time, inject the implanting glue, and the implanting glue can be injected into the drilling. This structure fixes the steel bar while forming a single channel between the drilling and the glue injector, supports and fixes the steel bar, eliminates the need to fix the steel bar during glue injection, avoids the steel bar from sliding down, and also ensures the unidirectionality of the glue injection channel during fixation. This device is suitable for the glue injection and steel bar implanting operation of the upward drilling of the concrete structure, and the implanting glue will not leak out, and the operation is simple.

[0032] In a further solution, referring to Figure 2 、 Figure 3 and Figure 4, further comprising an elastic rubber ring 4. The inner diameter of the elastic rubber ring 4 in the free state is smaller than the outer diameter of the steel bar. When the elastic rubber ring 4 is sleeved on the steel bar, the outer diameter of the elastic rubber ring 4 matches the inner diameter of the drilling hole. The upper end of the main pipe 1 is also provided with a ring platform 11. A plurality of sliding columns 12 are vertically slidably arranged inside the ring platform 11. The sliding columns 12 are arranged around the steel bar. A sliding cylinder 13 is slidably arranged in the middle section of the main pipe 1. The ends of the sliding columns 12 are fixedly connected to the sliding cylinder 13. Moving the sliding cylinder 13 enables the sliding columns 12 to extend out of and retract into the ring platform 11. When the sliding columns 12 extend out of the ring platform 11, the elastic rubber ring 4 is sleeved on the outside of a plurality of the sliding columns 12, and the extending length of the sliding columns 12 is less than the thickness of the elastic rubber ring 4.

[0033] By providing the elastic rubber ring 4, when the elastic rubber ring 4 is stuck on the sliding column 12, this device abuts against the drilling hole mainly, and the elastic rubber ring 4 serves as a sealing component to prevent the leakage of the planting glue. After the glue injection is completed, moving the sliding cylinder 13 causes the sliding column 12 to leave the elastic rubber ring 4. After the elastic rubber ring 4 is sleeved on the steel bar, it has the function of positioning the steel bar and serving as an observation point for whether the steel bar moves downward, and also has the function of blocking the planting glue at the drilling position.

[0034] In a further solution, as Figure 2 shown, three support columns 5 are also annularly arranged on the side of the main pipe 1. The support column 5 includes a cross beam 51, an upper rod 52, a threaded cylinder 53, and a lower rod 54. The end of the cross beam 51 is fixed to the side of the main pipe 1. The upper end of the upper rod 52 is hinged to the outer end of the cross beam 51. The threaded cylinder 53 is threadedly connected to the lower end of the upper rod 52. The lower rod 54 is threadedly connected to the lower end of the threaded cylinder 53. The thread directions at both ends of the threaded cylinder 53 are opposite. Rotating the threaded cylinder 53 can adjust the relative distance between the upper rod 52 and the lower rod 54. The length of the lower rod 54 is selected according to the distance between the operation platform and the drilling position.

[0035] In this solution, by respectively tightening the three threaded cylinders 53, the whole device can be temporarily abutted against the drilling position, eliminating the need for manual holding of the whole device. The three support columns 5 with variable lengths and angles can adapt to the operation planes of different terrains, such as a temporarily erected suspension frame or a rough bottom surface. This structure can effectively abut the whole device against the drilling position.

[0036] In a further solution, as Figure 4 shown, a stop platform 14 is also fixed in the middle section of the sliding column 12. The stop platform 14 is slidably arranged inside the ring platform 11. A support spring 15 is arranged between the stop platform 14 and the ring platform 11. The support spring 15 is used to support the upward movement of the sliding column 12 and prevent the elastic rubber ring 4 from falling due to the downward movement of the sliding column 12 in the free state.

[0037] In a further solution, as Figure 4As shown, a push plate 16 is bent inward on the sliding column 12. After the elastic rubber ring 4 is sleeved on the steel bar, the sliding cylinder 13 is moved forward, so that the push plate 16 pushes the elastic rubber ring 4 into the drill hole.

[0038] In this solution, after the sliding column 12 moves downward and the elastic rubber ring 4 is sleeved on the steel bar, the sliding cylinder 13 is moved upward again, and the elastic rubber ring 4 can be further pushed into the drill hole, which can further seal the drill hole position and reduce the leakage gap of the implanting glue.

[0039] In a further solution, since the relative rotation between the airbag ring 31 and the pressure cylinder 32 is the relative rotation between rubber and metal, the frictional stress is large, and it is laborious for the pressure cylinder 32 to rotate when pressing against the airbag ring 31. Therefore, as Figure 3 and Figure 5 , a blocking block 33 is further provided between the pressure cylinder 32 and the airbag. A protrusion 331 is provided on the outer side of the blocking block 33. The blocking block 33 is slidably arranged in the main pipe 1, and the protrusion 331 is slidably arranged in the side wall of the main pipe 1. By additionally providing the blocking block 33, the blocking block 33 only moves up and down, and the relative rotation between the pressure cylinder 32 and the blocking block 33 is the relative displacement between metals, with a smaller frictional stress, and the pressure cylinder 32 rotates more labor-savingly.

[0040] The present invention also proposes a use method of a device for implanting steel bars by drilling upward in concrete, and the steps are as follows

[0041] S1: Drill a hole upward from the bottom surface of the concrete structure;

[0042] S2: Clamp the elastic rubber ring 4 around the sliding column 12 and align the steel bar implanting device with the drill hole;

[0043] S3: The support column 5 supports on the operation platform, and the threaded column is adjusted so that the steel bar implanting device abuts against the bottom surface of the concrete structure;

[0044] S4: The steel bar passes through the pressure cylinder 32 and the main pipe 1 in sequence and extends into the drill hole, and the pressure cylinder 32 is rotated to clamp and seal the airbag on the side of the steel bar;

[0045] S5: Connect the glue injection gun to the side pipe 2 and inject glue;

[0046] S6; Move the sliding cylinder 13 downward so that the elastic rubber ring 4 is sleeved on the steel bar, and push the sliding cylinder 13 upward so that the sliding column 12 abuts against the elastic rubber ring 4 and extends into the drill hole;

[0047] S7: Remove the whole device downward, limit the downward movement position of the steel bar through a fixing device, and remove it after the implanting glue solidifies.

[0048] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A device for implanting steel bars by upward drilling in concrete, characterized in that: It includes a main pipe (1), a side pipe (2) and a plugging part (3); an opening aligned with the concrete drill hole is provided at the upper end of the main pipe (1), the plugging part (3) is arranged at the lower end of the main pipe (1), and the side pipe (2) communicates with the side of the main pipe (1); the plugging part (3) includes an airbag ring (31) and a pressing cylinder (32), a ring groove recessed inward is provided in the section of the main pipe (1) near the lower end, the airbag ring (31) is arranged in the ring groove, the pressing cylinder (32) is threadedly connected to the inner side of the lower end of the main pipe (1), rotate the pressing cylinder (32), and the pressing cylinder (32) presses the airbag to seal and clamp the steel bar; it further includes an elastic rubber ring (4), a ring platform (11) is further provided at the upper end of the main pipe (1), several sliding columns (12) are vertically slidably arranged inside the ring platform (11), the sliding columns (12) are arranged around the steel bar, a sliding cylinder (13) is slidably arranged in the middle section of the main pipe (1), and the ends of the sliding columns (12) are fixedly connected to the sliding cylinder (13), move the sliding cylinder (13) to make the sliding columns (12) extend out of and retract into the ring platform (11); when the sliding columns (12) extend out of the ring platform (11), the elastic rubber ring (4) is sleeved on the outer sides of several sliding columns (12), and the extending length of the sliding columns (12) is less than the thickness of the elastic rubber ring (4); several support columns (5) are also annularly arranged on the side of the main pipe (1), the support column (5) includes a cross beam (51), an upper rod (52), a threaded cylinder (53) and a lower rod (54), the end of the cross beam (51) is fixed to the side of the main pipe (1), the upper end of the upper rod (52) is hinged to the outer end of the cross beam (51), the threaded cylinder (53) is threadedly connected to the lower end of the upper rod (52), the lower rod (54) is threadedly connected to the lower end of the threaded cylinder (53), the thread directions at both ends of the threaded cylinder (53) are opposite, rotating the threaded cylinder (53) can adjust the relative distance between the upper rod (52) and the lower rod (54), and the length of the lower rod (54) is selected according to the distance between the operation platform and the drill hole.

2. The concrete upward drilling and rebar planting device according to claim 1, characterized in that: A retaining table (14) is further fixed in the middle section of the sliding column (12), the retaining table (14) is slidably arranged inside the ring platform (11), and a support spring (15) is arranged between the retaining table (14) and the ring platform (11).

3. The concrete upward drilling and rebar planting device according to claim 1, characterized in that: The sliding column (12) is bent inward to form a push plate (16). After the elastic rubber ring (4) is sleeved on the steel bar, move the sliding cylinder (13) forward to make the push plate (16) push the elastic rubber ring (4) into the drill hole.

4. The concrete upward drilling and rebar planting device according to claim 1, wherein: A resisting block (33) is further arranged between the pressing cylinder (32) and the airbag, a protrusion (331) is arranged on the outer side of the resisting block (33), the resisting block (33) is slidably arranged in the main pipe (1), and the protrusion (331) is slidably arranged in the side wall of the main pipe (1).

5. A method for using a device for implanting reinforcing bars by upward drilling in concrete, characterized in that: Adopt the concrete upward drilling and rebar planting device according to any one of claims 1 - 4, and the steps are as follows: S1: Drill a hole upward from the bottom surface of the concrete structure; S2: Clamp the elastic rubber ring (4) around the sliding columns (12), and align the rebar planting device with the drill hole; S3: The support column (5) supports the operating platform, and the threaded column is adjusted so that the rebar planting device abuts against the bottom surface of the concrete structure; S4: The steel bar is sequentially passed through the pressing cylinder (32) and the main pipe (1) and extends into the drilled hole, and the pressing cylinder (32) is rotated to clamp and seal the airbag on the side of the steel bar; S5: Connect the glue injection gun to the side pipe (2) and inject glue; S6; Move the sliding cylinder (13) downward so that the elastic rubber ring (4) is sleeved on the steel bar, and push the sliding cylinder (13) upward so that the sliding column (12) abuts against the elastic rubber ring (4) and extends into the drilled hole; S7: Remove the entire device downward, limit the downward movement position of the steel bar through the fixing device, and remove it after the planting glue solidifies.

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