A pre-embedding auxiliary fixture and pre-embedding method for pre-embedded suspension rods in a hanging basket

Abstract

The present invention discloses a pre-embedded auxiliary jig and pre-embedding method for a hanging basket pre-embedded boom, which belongs to the field of cantilever casting technology and is used to improve the accuracy of pre-embedding of fine-rolled threaded steel bars in a hanging basket. The jig is formed by butt-welding a double-layer channel steel to form a jig frame. According to the pre-embedded position of the fine-rolled threaded steel bars provided in the hanging basket design drawing, holes are drilled on the jig frame to form a jig for pre-embedding fine-rolled threaded steel bars. After the rear anchor and rail positions are laid out, the jig is installed according to the layout results. After the jig is installed and fixed, the fine-rolled threaded steel bars can be installed through the reserved holes. Pre-embedding the fine-rolled threaded steel bars by the jig can ensure that the position of the fine-rolled threaded steel bars is accurate, coaxial and vertical, and can also reduce the influence of various factors on the pre-embedded position of the fine-rolled threaded steel bars during the subsequent concrete pouring process, thereby ensuring that the pre-embedded quality of the fine-rolled threaded steel bars meets the design and specification requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of cantilever casting, is used to improve the accuracy of pre-embedding of fine-rolled threaded steel bars in a hanging basket, and particularly relates to a pre-embedding auxiliary jig and a pre-embedding method for pre-embedding a suspension rod in the hanging basket. Background Art

[0002] The hanging basket is the main equipment in cantilever construction. It is used to bear the deadweight of the beam and the construction load. It can move forward section by section. It is a specially designed special equipment. The main components include the load-bearing system, anchoring system, suspension system, walking system, formwork and working platform system. According to the structural form, it can be divided into 4 types: truss type, cable-stayed type, steel type and mixed type. According to the requirements of the concrete cantilever construction process and the requirements of the design drawings for the hanging basket, the characteristics, weight, type of steel used, construction process, etc. of various types of hanging baskets are comprehensively compared. The design principles of the hanging basket are: light deadweight, simple structure, strong and stable, easy to move forward and assemble and disassemble, strong reusability, small deformation after being subjected to force, etc., and there is sufficient space under the hanging basket to provide a larger construction working surface, which is conducive to the steel formwork construction operation.

[0003] Most of the rail anchoring systems in the hanging basket anchoring system and the traveling system are anchored by pre-embedding fine-rolled threaded steel bars in the cast beam section and then extending them with connecting sleeves. Due to the stress characteristics of the fine-rolled threaded steel bars and the limitations of the hanging basket installation, the fine-rolled threaded steel bars must be accurately positioned, coaxial, and vertical during pre-embedding. Currently, the fine-rolled threaded steel bars are usually pre-embedded by tying them to the main reinforcement of the top plate of the cantilevered beam or fixing them with separate stand-off reinforcement. These methods are difficult to meet the requirements of accurate pre-embedded position, coaxiality, and verticality of the fine-rolled threaded steel bars during installation. During the concrete pouring process, they are easily deflected or even dropped due to factors such as people stepping on them and concrete vibration, which brings inconvenience to the subsequent hanging basket installation and travel. Summary of the Invention

[0004] The purpose of the present invention is to provide a pre-embedded auxiliary jig and a construction method for a hanging basket pre-embedded boom, so as to solve the problem of inaccurate pre-embedded position of fine-rolled threaded steel bars existing in the related art.

[0005] The technical solution adopted by the present invention is as follows: a pre-embedded auxiliary mold for a hanging basket pre-embedded suspension rod, comprising a platform, the platform comprising a crossbeam, hanging plates symmetrically arranged on both sides of the crossbeam, mounting holes respectively provided on the hanging plates and the crossbeam, the pre-embedded suspension rod being arranged in the mounting hole, and the upper end of the pre-embedded suspension rod being detachably connected to the hanging plate and the crossbeam.

[0006] There are multiple hanging plates, and the multiple hanging plates are arranged along the length direction of the beam.

[0007] The crossbeam comprises an upper crossbeam and a lower crossbeam. The upper crossbeam and the lower crossbeam arranged above and below are connected by a gusset plate. The embedded hanger is arranged on the upper crossbeam and passes through the lower crossbeam.

[0008] The embedded suspension rod is a precision-rolled threaded steel bar, and the upper end of the precision-rolled threaded steel bar is fixed to the upper crossbeam by a nut.

[0009] The platform is provided with a plurality of warning mechanisms, and the plurality of warning mechanisms are respectively installed on the crossbeam and the hanging plate.

[0010] The warning mechanism includes a shell and a warning light arranged on the shell. The shell is installed on the beam and the hanging plate. A battery is arranged in the shell, and the battery is electrically connected to the warning light.

[0011] A method for pre-embedding a hanging basket pre-embedded boom, the method comprising the following steps:

[0012] Fabricate the gantry: Cut the pre-embedded suspenders, upper beams, lower beams, and hanging plates according to the rear anchor position and track length designed in the hanging basket design drawings. On a flat site, butt the upper and lower beams together and connect them with a gusset plate. Drill holes in the upper beams, lower beams, and hanging plates at the positions designed for the pre-embedded suspenders according to the hanging basket design drawings.

[0013] Installation of jig: The rear anchor position of the hanging basket and the track position are determined by measurement and layout. After the layout is completed, the prepared stand is hoisted according to the layout results and fixed to limit the plane movement of the stand;

[0014] Installation of embedded hanger rod: Install the nut on one end of the embedded hanger rod, and pass it through the openings on the upper beam, lower beam and hanger plate in sequence, and hang it on the stand without tying;

[0015] Concrete pouring: pour concrete on the beam. When pouring concrete, workers should be careful not to step on the platform. When vibrating the concrete, the vibrating rod should avoid the platform to ensure the accuracy of the platform position, thereby ensuring the accuracy of the embedded hanger position;

[0016] Dismantling of the stand: Unscrew the nuts on all embedded hangers and lift and dismantle the stand as a whole.

[0017] Including concrete curing, the concrete is cured to a strength of not less than 2.5Mpa.

[0018] The described jig installation includes attention to reserving the top plate reinforced concrete protective layer during installation.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] This jig is formed by welding double-layer channel steels together to form a jig frame. According to the embedded position of the fine-rolled threaded steel provided in the hanging basket design drawing, holes are drilled on the jig frame to form a jig for embedding the fine-rolled threaded steel. After the rear anchor and track positions are laid out, the jig is installed according to the layout results. After the jig is installed and fixed, the fine-rolled threaded steel can be installed through the reserved holes. Embedding the fine-rolled threaded steel in the jig can ensure that the position of the fine-rolled threaded steel is accurate, coaxial and vertical, and can also reduce the influence of various factors on the embedded position of the fine-rolled threaded steel during the subsequent concrete pouring process, thereby ensuring that the embedded quality of the fine-rolled threaded steel meets the design and specification requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the mold provided by the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 A schematic diagram of the upper crossbeam and lower crossbeam structures provided by the present invention;

[0024] Figure 4 Schematic diagram of the warning mechanism provided by the present invention

[0025] Figure 5 A schematic diagram of the embedded boom provided by the present invention;

[0026] Figure 6 A diagram showing the relationship between the embedded hanger rod and concrete provided by the present invention;

[0027] Figure 7 A diagram showing the relationship between the mold and concrete provided by the present invention;

[0028] Figure 8 It is a flowchart of the present invention.

[0029] Markings in the figure: 1-beam, 1-1 upper beam, 1-2 lower beam, 2-hanging plate, 3-embedded hanger, 4-warning mechanism, 4-1-warning light, 4-2-battery, 4-3-shell, 5-concrete. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] like Figure 1-Figure 5As shown, a pre-embedded auxiliary mold for a hanging basket pre-embedded suspension rod comprises a platform, the platform comprises a cross beam 1, and hangers 2 are symmetrically arranged on both sides of the cross beam 1, and mounting holes are respectively provided on the hangers 2 and the cross beam 1, and pre-embedded suspension rods 3 are arranged in the mounting holes, and the upper ends of the pre-embedded suspension rods 3 are detachably connected to the hangers 2 and the cross beam 1; by symmetrically arranging hangers 2 on both sides of the cross beam 1, and designing the holes for the pre-embedded suspension rods 3 according to the hanging basket design drawings, the rear anchor position and the track of the hanging basket are arranged. The position is determined by measurement and layout. After the layout is completed, the prepared jig is hoisted according to the layout results and fixed to limit the plane movement of the platform; a nut is installed on one end of the embedded hanger 3, and it is passed through the openings on the upper beam 1-1, the lower beam 1-1, and the hanger plate 2 in turn, and hung on the platform without binding; after the concrete pouring is completed, the nuts on all the embedded hangers 3 are unscrewed, the jig is lifted and removed as a whole, and the embedded hangers 3 are embedded, while the accuracy of the embedded position of the embedded hangers is improved.

[0032] like Figure 1-Figure 5As shown, in this embodiment, the crossbeam 1 is made of hot-rolled light channel steel, 5mm thick steel plate, the opening diameter = the diameter of the fine-rolled threaded steel + 10mm, the gusset plate is processed with 5mm thick steel plate, the gusset plate is processed with 5mm thick steel plate, the gusset plate is 50mm wide and thick, and the length is determined according to the spacing between the upper and lower tire frames, and the overlap length with the upper and lower tire frames is not less than 20mm; gusset plates are set on both sides of the tire, except for the end and the tire frame connection, the spacing between other parts is not more than 1m to ensure the overall strength and rigidity of the tire; for specific installation, the stand includes an upper crossbeam 1-1 and a lower crossbeam 1-2, and the upper crossbeam 1-1 and the lower crossbeam 1-2 are respectively provided with a hanger 2, and there are 4 hangers 2, of which every two 1-2 and the upper and lower beams 1-1 are fixed together by a gusset plate. The gusset plates are arranged in a group and at equal distances. The specific position is set according to actual needs. The lengths of the two hangers 2 are different. Holes are opened on the upper crossbeam 1-1, the lower crossbeam 1-2 and the hanger plate 2 respectively. The hole positions are designed according to the hanging basket design drawings to embed the fine-rolled threaded steel positions. The upper and lower upper crossbeams 1-1 and the lower crossbeams 1-2 and the hanger plate 2 should correspond vertically. The hole diameter = fine-rolled threaded steel diameter + 10mm; the upper and lower upper crossbeams 1-1 and the lower crossbeams 1-2 are fixed by a gusset plate. There are multiple gusset plates that are appropriately set according to needs. They are used to fix the upper and lower crossbeams 1-1 and the lower crossbeams 1-2 through the gusset plates. The gusset plates are connected to the upper crossbeam 1-1, the lower beam 1-2, the upper hanger plate and the lower The hanging plates are welded and connected; each opening is provided with an embedded hanger rod 3, which is a fine-rolled threaded steel bar. A fine-rolled threaded steel nut is installed on one end of the fine-rolled threaded steel bar, and passes through the openings on the upper crossbeam 1-1, the lower crossbeam 1-2, the upper hanging plate and the lower hanging plate in turn, and is hung on the upper crossbeam 1-1 and the upper hanging plate without binding; the upper crossbeam 1-1 and the upper hanging plate are respectively provided with a plurality of warning mechanisms 4, the warning mechanism 4 on the upper crossbeam 1-1 is provided at both ends of the upper crossbeam 1-1, and the warning mechanism 4 on the upper hanging plate 2 is provided at both ends of the upper hanging plate, and the warning mechanism 4 includes a shell 4-3, the lower part of the shell 4-3 is connected to the upper crossbeam 1-1 and the upper hanging plate mechanism, wherein the warning mechanism 4 on the upper hanging plate The upper shell 4-3 is connected to the upper hanging plate mechanism through a connecting plate to prevent the shell 4-3 from affecting the installation of the embedded hanger 3. A warning light 4-1 is installed on the upper part of the shell 4-3. The warning light 4-1 is a flashing red light warning light. The flashing red light warning light is connected to the shell 4-3 mechanism. The shell 4-3 is a rectangular shell. A battery 4-2 is arranged in the shell 4-3. The battery 4-2 is electrically connected to the warning light 4-1 to warn the staff to avoid touching or stepping on the upper beam 1-1 and affecting the embedding accuracy of the fine-rolled threaded steel bars. The warning mechanism 4 is respectively arranged on the outer edge of the overall stand to remind the workers to avoid stepping on or touching the stand and affecting the accuracy of the embedded hanger 3.During use, the rear anchor position and the track position of the hanging basket are determined by measurement and layout. After the layout is completed, the prepared jig is hoisted according to the layout results and fixed to limit the plane movement of the jig. During installation, attention should be paid to reserving a protective layer of reinforced concrete for the top plate; install the finished rolled threaded steel nut on one end of the unloaded fine-rolled threaded steel, pass it through the opening on the jig, and hang it on the jig without binding; pouring concrete 5: when pouring concrete 5, the operator should be careful not to step on the jig, and when vibrating the concrete, the vibrating rod should avoid the jig to ensure that the position of the jig is accurate, and thus ensure that the embedded position of the fine-rolled thread is accurate; unscrew all the fine-rolled threaded steel nuts, and lift and remove the jig as a whole; the embedded auxiliary jig of the hanging basket embedded boom in this embodiment can be multi-section, and the adjacent sections can be detachably connected by connecting plates and bolts. As a further optimization of this technical solution, the jig can be made in sections according to different modules, connected by bolts, and spliced according to on-site needs to meet the rear anchor position and track length of different hanging basket designs.

[0033] like Figure 6-Figure 8 As shown, a pre-embedded auxiliary jig and pre-embedded method for a hanging basket pre-embedded boom, the method comprising the following steps: making a stand: cutting the pre-embedded boom, upper beam, lower beam and hanging plate according to the rear anchor position and track length designed in the hanging basket design drawing, connecting the upper beam and the lower beam up and down on a flat site and connecting them through a gusset plate, and making holes for the pre-embedded boom positions designed in the upper beam, lower beam and hanging plate according to the hanging basket design drawing; jig installation: the rear anchor position and track position of the hanging basket are determined by measurement and layout. After the layout is completed, the manufactured stand is hoisted according to the layout results and fixed to limit the plane movement of the stand. During installation, attention should be paid to reserving the reinforced concrete protective layer of the top plate; pre-embedded boom installation: a nut is installed on one end of the pre-embedded boom, and it passes through the openings on the upper beam, lower beam and hanging plate in turn, and is hung on the stand. That's it, no binding is required; concrete pouring: pour concrete on the beam, when pouring concrete, the workers should be careful not to step on the platform, when vibrating the concrete, the vibrator should be careful to avoid the platform, to ensure the accuracy of the platform position, and then to ensure the accuracy of the embedded position of the precision pre-embedded hanger, concrete curing, the concrete is cured to a strength of not less than 2.5Mpa; platform removal: unscrew the nuts on all the embedded hangers, and lift and remove the platform as a whole; after the installation is completed by layout, the embedded position of the precision rolled threaded steel is guaranteed to be accurate and coaxial, and the human error that may occur when a single piece is embedded is effectively avoided. The positioning of the precision rolled threaded steel is simple, the embedding accuracy is improved, and the influence of the concrete pouring process on the embedded position of the precision rolled threaded steel is reduced, which effectively improves the construction quality of the embedded precision rolled threaded steel and reduces the influence of inaccurate embedded precision rolled threaded steel on the subsequent hanging basket installation and walking.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for pre-embedding a hanging basket with a pre-embedded boom, characterized in that: The method comprises the following steps: Fabricate the gantry: Cut the pre-embedded suspenders, upper beams, lower beams, and hanging plates according to the rear anchor position and track length designed in the hanging basket design drawings. On a flat site, butt the upper and lower beams together and connect them with a gusset plate. Drill holes in the upper beams, lower beams, and hanging plates at the positions designed for the pre-embedded suspenders according to the hanging basket design drawings. Installation of jig: The rear anchor position of the hanging basket and the track position are determined by measurement and layout. After the layout is completed, the prepared stand is hoisted according to the layout results and fixed to limit the plane movement of the stand; Installation of embedded hanger rod: Install the nut on one end of the embedded hanger rod after the material is unloaded, and pass it through the openings on the upper beam, lower beam, and hanger plate in sequence, and hang it on the stand without binding; and set warning mechanisms on the outer edges of the entire stand to remind workers to avoid stepping on or touching the stand, which may affect the accuracy of the embedded hanger rod; Concrete pouring: pour concrete on the beam. When pouring concrete, workers should be careful not to step on the platform. When vibrating the concrete, the vibrating rod should avoid the platform to ensure the accuracy of the platform position, thereby ensuring the accuracy of the embedded hanger position; Dismantling of the stand: unscrew the nuts on all embedded hangers and lift and dismantle the stand as a whole; The jig includes a platform, the platform includes a crossbeam, and hangers are symmetrically provided on both sides of the crossbeam. The hangers and the crossbeam are respectively provided with mounting holes, and embedded hangers are provided in the mounting holes. The upper ends of the embedded hangers are detachably connected to the hangers and the crossbeam. There are multiple hanging plates, and the multiple hanging plates are arranged along the length direction of the beam; The crossbeam includes an upper crossbeam and a lower crossbeam, the upper crossbeam and the lower crossbeam are connected by a gusset plate, and the embedded hanger is arranged on the upper crossbeam and passes through the lower crossbeam; The platform is provided with a plurality of warning mechanisms, and the plurality of warning mechanisms are respectively installed on the crossbeam and the hanging plate.

2. The method according to claim 1, characterized in that Including concrete curing, the concrete is cured to a strength of not less than 2.5Mpa.

3. The method according to claim 1, characterized in that The described jig installation includes attention to reserving the top plate reinforced concrete protective layer during installation.

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