Recyclable pre-embedded anchor bolt assembly for overhanging profile steel

Abstract

The utility model relates to the field of constructional engineering parts, and aims to provide an overhanging section steel recoverable embedded anchor bolt assembly which comprises an embedded base, two anchor screws and a pressing plate. The embedded base comprises two big-end-down prismatic tables, the bottoms of the prismatic tables are in butt joint, threaded holes vertically extending downwards are formed in the upper table faces of the prismatic tables, the pressing plate is located above the embedded base, through holes are formed in the positions, corresponding to the threaded holes, of the pressing plate in a one-to-one correspondence mode, and the two anchoring screws are rotationally arranged in the two threaded holes respectively. The upper ends of the two anchoring screws penetrate out of the pressing plate through the corresponding through holes, and nut locking pieces are arranged on the portions, penetrating out of the pressing plate, of the anchoring screws in a screwed mode. According to the utility model, the anchoring screw rod can be recovered after the overhanging profile steel is removed, and material waste and potential safety hazards caused by manual cutting of the anchoring screw rod in a traditional anchoring mode are avoided.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering parts, in particular to a cantilever steel recyclable embedded anchor bolt assembly. Background Art

[0002] In the field of high-rise building construction, cantilever steel scaffolding is an important temporary structure, and its construction technology is relatively mature. However, in traditional construction, the anchor end of the cantilever steel scaffolding generally adopts pre-embedded U-shaped steel bar anchor bolts to anchor the cantilever steel to the floor slab.

[0003] This traditional method requires manual cutting to remove the screws exposed on the floor surface after the steel scaffolding is dismantled. This operation is not only cumbersome and time-consuming, increasing manpower and material costs, but also inevitably leads to material waste;

[0004] However, even after cutting, it is still difficult to ensure that the surface of the floor is flat. The remaining raised screws not only affect the appearance, but also pose a potential safety hazard, which can easily lead to accidents such as people tripping. Utility Model Content

[0005] The utility model aims to provide a recyclable pre-buried anchor bolt assembly for cantilevered steel, which can recycle the anchor screw after dismantling the cantilevered steel, thereby avoiding material waste and safety hazards caused by manual cutting of the anchor screw in the traditional anchoring method.

[0006] The purpose of the utility model is achieved through the following technical solutions: a cantilever steel recyclable embedded anchor bolt assembly, which includes an embedded base, two anchor screws and a pressure plate;

[0007] The embedded base includes two prisms which are smaller on the top and larger on the bottom and butt-jointed at the bottom. The upper surface of the prism is provided with a threaded hole extending vertically downward. The pressure plate is located above the embedded base, and the pressure plate is provided with through holes corresponding to the positions of the threaded holes. Two anchor screws are respectively screwed into the two threaded holes, and the upper ends of the two anchor screws pass through the pressure plate through the corresponding through holes, and a nut locking piece is screwed on the part of each anchor screw passing through the pressure plate.

[0008] Compared with the prior art, the advantages of the utility model are:

[0009] 1. Through the cooperation of the embedded base and the anchor screw, after the cantilever steel is removed, the anchor screw can be unscrewed from the embedded base and recycled, avoiding the defect of manual cutting of the U-shaped steel bar anchor bolts after the traditional cantilever steel is removed, reducing labor costs and improving construction efficiency.

[0010] 2. The two prisms in the embedded base, which are small on the top and large on the bottom and connected at the bottom, make the embedded base have good pull-out resistance in the cast-in-place concrete layer, and the outer periphery of the prism is provided with steps to further improve the bonding between the prism and the concrete, avoiding the embedded base from tilting or being pulled out as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of a cantilever steel recyclable embedded anchor bolt assembly of the utility model;

[0012] Figure 2 It is a top view of the embedded base of the utility model;

[0013] Figure 3 It is a longitudinal sectional view of the embedded base of the utility model.

[0014] Explanation of numbers: 1 embedded base, 101 prism, 102 threaded hole, 103 connecting plate with hole, 104 step, 105 groove, 2 anchor screw, 3 pressure plate, 4 nut locking piece, 5 formwork, 6 cast-in-place concrete layer, 7 cantilever steel, 8 wooden wedge, 9 pads. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0016] like Figure 1-3 The figure is a schematic diagram of an embodiment of a cantilever steel recyclable embedded anchor bolt assembly provided by the utility model:

[0017] A cantilever steel recyclable embedded anchor bolt assembly, comprising an embedded base 1, two anchor screws 2 and a pressing plate 3;

[0018] The embedded base 1 includes two prisms 101 which are smaller at the top and larger at the bottom and butt-jointed at the bottom. The upper surface of the prism 101 is provided with a threaded hole 102 extending vertically downward. The pressure plate 3 is located above the embedded base 1, and the pressure plate 3 is provided with through holes corresponding to the positions of the threaded holes 102. The two anchor screws 2 are respectively screwed into the two threaded holes 102, and the upper ends of the two anchor screws 2 pass through the pressure plate 3 through the corresponding through holes, and the part of each anchor screw 2 passing through the pressure plate 3 is screwed with a nut locking piece 4.

[0019] The nut locking member 4 is preferably a double nut to prevent the nut locking member 4 from loosening by itself.

[0020] The pressing plate 3 is made of steel plate, and its specification is preferably an angle steel of L63mm*6mm.

[0021] The anchoring screw 2 is preferably made of HRB335 steel bar with a diameter of 18 mm.

[0022] A plurality of connection plates 103 with holes are provided around the embedded base 1 .

[0023] The prism 101 is a quadrangular prism, and a step 104 extending toward the central axis of the prism 101 is provided on its outer periphery. The step 104 can increase the bonding degree between the prism 101 and the cast-in-place concrete, so as to improve the pull-out resistance of the embedded base 1.

[0024] The height of the prism 101 is equal to the height of the cast-in-place concrete layer 6. When pouring concrete, the prism 101 can be used as a slab controller to control the pouring thickness of the floor slab.

[0025] A groove 105 for accommodating reinforcing steel bars is provided at the top of the joint between the two prisms 101 .

[0026] Two protection tubes are further provided between the pressing plate 3 and the embedded base 1 , and the two protection tubes are respectively sleeved on the two anchoring screws 2 .

[0027] The protection tube is preferably a rigid polyvinyl chloride tube with a diameter of 20 mm, and the length of the protection tube is not greater than the distance between the bottom side of the pressing plate 3 and the upper surface of the prism 101.

[0028] The construction method of the utility model is roughly as follows:

[0029] S1: Screw two anchoring screws 2 into the corresponding threaded holes 102 of the embedded base 1 respectively;

[0030] S2: Use common connecting parts such as nails or screws to pass through the holes of the perforated connecting plate 103 to fix the embedded base 1 on the set up template 5, and place reinforcing steel bars on the grooves 105 in the embedded base 1;

[0031] S3: Put two protective tubes on each anchor screw 2 to prevent the anchor screw 2 from being contaminated when pouring concrete;

[0032] S4: pouring concrete on the formwork 5 until the height of the concrete is flush with the upper surface of the prism 101, thereby forming a cast-in-place concrete layer 6;

[0033] S5: After the concrete reaches the required strength, a pad 9 is placed on the surface of the cast-in-place concrete layer 6 between the two anchor bolts 2, and then a cantilever steel 7 is placed on the pad 9;

[0034] S6: Align the through holes of the pressing plate 3 with the anchoring screws 2 one by one, so that the upper part of the anchoring screws 2 passes through the pressing plate 3 through the through holes, and screw the nut locking piece 4 into the passing part to lock the pressing plate 3 on the top of the cantilevered steel 7, and then use the wooden wedge 6 to wed laterally between the cantilevered steel 7 and the gap between the two anchoring screws 2;

[0035] S7: When dismantling the cantilever steel 7, the nut locking piece 4, the pressure plate 3 and the anchor screw 2 can be unscrewed and removed, so as to recover the anchor screw 2, and then the exposed bolt hole 102 on the reserved base 1 can be filled with building mortar.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cantilever steel recyclable embedded anchor bolt assembly, characterized in that: It comprises a pre-buried base (1), two anchoring screws (2) and a pressing plate (3); The embedded base (1) comprises two prisms (101) which are smaller at the top and larger at the bottom and butt-jointed at the bottom. The upper surface of the prisms (101) is provided with a threaded hole (102) extending vertically downward. The pressure plate (3) is located above the embedded base (1), and the pressure plate (3) is provided with through holes corresponding to the positions of the threaded holes (102). Two anchoring screws (2) are respectively screwed into the two threaded holes (102). The upper ends of the two anchoring screws (2) respectively pass through the pressure plate (3) through the corresponding through holes, and a nut locking member (4) is screwed on the portion of each anchoring screw (2) passing through the pressure plate (3).

2. The cantilever steel recyclable embedded anchor bolt assembly according to claim 1 is characterized in that: A plurality of connection plates (103) with holes are provided on the peripheral side of the embedded base (1).

3. The cantilever steel recyclable embedded anchor bolt assembly according to claim 1 is characterized in that: The prism (101) is a quadrangular prism, and a step (104) extending in the direction of the central axis of the prism (101) is provided on the outer periphery of the prism (101).

4. The cantilever steel recyclable embedded anchor bolt assembly according to claim 1 is characterized in that: A groove (105) for accommodating reinforcing steel bars is provided at the top of the joint between the two prisms (101).

5. The cantilever steel recyclable embedded anchor bolt assembly according to any one of claims 1 to 4, characterized in that: Two protective tubes are also provided between the pressing plate (3) and the embedded base (1), and the two protective tubes are respectively sleeved on the two anchoring screws (2).

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