Pre-embedded positioning device for prefabricated stair support reinforcing steel bars

Abstract

The utility model provides a prefabricated stair support reinforcing steel bar pre-embedding positioning device which aims at solving the problems of construction difficulty and potential safety hazards caused by deviation of reinforcing steel bars when a prefabricated stair is installed in constructional engineering. A positioning seat of a positioning assembly of the device is installed on an aluminum mold through a pin and a pin piece assembly, and a pre-embedded joint bar is arranged in a sleeve of an adjusting assembly and fixed through an adjusting bolt. And the adjusting assembly realizes accurate positioning. The device has the advantages of simple structure, low cost, turnover use, safety, reliability and the like, and the construction efficiency and quality are remarkably improved. The pre-burying device is suitable for pre-burying work of prefabricated stair support steel bars of various specifications, and has wide market application prospects.

Description

Technical Field

[0001] This utility model relates to the field of building engineering equipment, specifically a positioning tool for pre-embedding steel bars in prefabricated stair supports, which aims to improve the efficiency and accuracy of prefabricated stair installation. Background Technology

[0002] With the acceleration of industrialization and mechanization in society, traditional manual production methods can no longer meet the development requirements of the future construction industry. Precast reinforced concrete staircases, produced by precast component manufacturers with higher production precision and stronger production capabilities, effectively avoid the quality problems caused by traditional cast reinforced concrete staircases. However, during the hoisting process of precast staircases, the misalignment of the embedded steel bars often causes difficulties in staircase installation. Correcting the misaligned steel bars is time-consuming and laborious, affecting the construction period. If not handled properly, it will leave safety hazards for the use of precast staircases.

[0003] Patent application CN202010338140.5 discloses a positioning mold for pre-embedded reinforcing bars, including a support frame and a reinforcing bar clamp mounted on the support frame. The reinforcing bar clamp includes a clamp fixing frame and clamping claws symmetrically arranged on the clamp fixing frame, with the clamping claws hinged to the clamp fixing frame. The support frame is provided with a drive mechanism for pushing the clamping claws to rotate around the hinge point between the clamping claws and the clamp fixing frame. This utility model uses the drive mechanism to drive the clamping claws to tighten or loosen inward, facilitating the clamping and fixing of the reinforcing bars. The absence of gaps between the reinforcing bars and the positioning mold prevents the reinforcing bars from swaying left and right, avoiding deviations in the fixing position. Furthermore, this positioning mold is suitable for reinforcing bars of different sizes. An anchoring component drives the push rod to rotate, which in turn moves the push seat up and down, thereby clamping the reinforcing bars. Afterward, fixing the anchoring component to the positioning plate maintains a stable and fixed state for the pre-embedded reinforcing bars. Reinforcing bars of different sizes can be easily fixed manually, without the need for mechanical devices, saving time, labor, and costs.

[0004] However, the aforementioned patented technology cannot be applied to the pre-embedded positioning of reinforcing bars in precast stair supports, nor can it solve the technical problems in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a pre-embedded positioning device for the reinforcing steel bars of prefabricated stair supports, so as to solve the problems mentioned in the background art above:

[0006] (1) How to solve the problem of pre-embedded steel bar misalignment through structural improvement, and facilitate the rapid installation of prefabricated stairs later.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A precast stair support reinforcement pre-embedded positioning device;

[0009] Includes a support assembly, a positioning assembly, and several adjustment assemblies;

[0010] The support assembly includes two support frames, the ends of which are detachably connected to the prefabricated aluminum template of the prefabricated staircase, and the beginnings of which extend into the inside of the prefabricated aluminum template of the prefabricated staircase.

[0011] Several adjustment components are connected to the support assembly through a positioning component. The adjustment component includes a sleeve, an adjustment nut, and an adjustment bolt. The inner hole of the sleeve matches the outer contour of the pre-embedded reinforcing bar of the prefabricated staircase. The adjustment nut is fixedly connected to the side wall of the sleeve. The end of the adjustment bolt cooperates with the adjustment nut and extends through the side wall of the sleeve into the inner hole of the sleeve.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the positioning component includes a positioning seat, with both ends of the positioning seat fixedly connected to the two support frames of the bracket assembly, and the sleeve of the adjustment component is fixedly connected to the positioning seat.

[0014] Furthermore, the support frame end of the bracket assembly is detachably connected to the prefabricated aluminum template of the prefabricated staircase via pins and pin plates.

[0015] Furthermore, the positioning assembly includes a first positioning rack, a second positioning rack, several connecting plates, several positioning shafts, and several positioning gears;

[0016] The first positioning rack is fixedly connected to the end of the support frame of the bracket assembly at both ends, and the second positioning rack is detachably connected to the support frame of the bracket assembly at both ends. The first positioning rack and the second positioning rack are arranged in parallel, and there is a gap between the first positioning rack and the second positioning rack.

[0017] A number of adjusting components, a number of connecting plates, a number of positioning shafts, and a number of positioning gears are in a one-to-one correspondence. The positioning gears are placed in the gap between the first positioning rack and the second positioning rack. The positioning gears mesh with the first positioning rack and the second positioning rack. The positioning gears are mounted on the positioning shafts. One end of the connecting plate is connected to the corresponding positioning shaft, and the other end of the connecting plate is connected to the corresponding adjusting component sleeve.

[0018] Furthermore, the connecting plate of the positioning component is connected to the positioning shaft via a bearing.

[0019] Furthermore, the positioning component also includes several limiting plates, one side of which is fixedly connected to the sleeve of the adjusting component, and the other side of which is fixedly connected to the connecting plate.

[0020] Furthermore, baffles are fixedly connected to the upper and lower sides of the first and second positioning racks respectively, and the distance between the baffles on the first positioning rack and the baffles on the second positioning rack is less than the gap width between the first and second positioning racks.

[0021] With this structure, the position and dimensions of the embedded reinforcing bars for the precast staircase are determined according to the design requirements. Before concrete pouring, the positioning components are installed on the precast aluminum formwork of the precast staircase. The embedded reinforcing bars of the precast staircase are fixed within the sleeves of the adjusting components to ensure precise positioning. Concrete is poured, and after curing, the precast aluminum formwork and the embedded positioning device for the reinforcing bars of the precast staircase support are removed. The precast staircase is then hoisted using the embedded reinforcing bars to complete the installation.

[0022] Compared with existing technologies, this precast stair support reinforcement pre-embedded positioning device has the following technical advantages:

[0023] (1) Simple structure: easy to manufacture and operate, reducing construction difficulty.

[0024] (2) Low cost: Common materials are used to reduce production and usage costs.

[0025] (3) Reusable: Standardized tools can be reused, improving resource utilization.

[0026] (4) Safe and reliable: Precisely control the position of the embedded reinforcing bars of the prefabricated stairs to improve construction quality and safety.

[0027] (5) Improve construction efficiency: speed up the installation of prefabricated stairs and shorten the construction cycle. Attached Figure Description

[0028] Figure 1 This is a right view of Embodiment 1 of the precast stair support reinforcement pre-embedded positioning device.

[0029] Figure 2 This is a top view of Embodiment 1 of the precast stair support reinforcement pre-embedded positioning device.

[0030] Figure 3 This is a perspective view of Embodiment 1 of the precast stair support reinforcement pre-embedded positioning device (the adjusting bolts and pre-embedded reinforcing bars are omitted).

[0031] Figure 4 This is a top view of Embodiment 2 of the precast stair support reinforcement pre-embedded positioning device.

[0032] Figure 5 yes Figure 4 Sectional view along AA.

[0033] Figure 6This is a top view and a cross-sectional view of the positioning component in Embodiment 2 of the precast stair support reinforcement pre-embedded positioning device.

[0034] Description of the numbers in the figure:

[0035] Support frame-100; Pin-110; Positioning seat-210; Sleeve-310; Adjusting nut-320; Adjusting bolt-330; Precast aluminum template-410; Embedded reinforcing bar-420; First positioning rack-220; Second positioning rack-230; Positioning gear-240; Connecting plate-250; Bearing-251; Positioning shaft-260; Limiting plate-270; Baffle-280. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0037] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Example 1

[0040] Please see Figures 1 to 3 .

[0041] This precast stair support reinforcement pre-embedded positioning device includes a support assembly, a positioning assembly, and two sets of adjustment assemblies.

[0042] The support assembly includes two support frames 100. The ends of the support frames 100 are detachably connected to the precast aluminum template 410 of the precast staircase via pins 110 and pin plates. The beginning of the support frame 100 extends into the precast aluminum template 410 of the precast staircase.

[0043] The positioning component includes a positioning seat 210, with both ends of the positioning seat 210 welded and fixed to the beginning ends of the two support frames 100 of the bracket assembly, and the sleeve 310 of the adjustment component is directly welded and fixed to the positioning seat 210.

[0044] Two sets of adjustment components are connected to the support assembly through the positioning seat 210 of the positioning component. The adjustment component includes a sleeve 310, an adjusting nut 320 and an adjusting bolt 330. The inner hole of the sleeve 310 matches the outer contour of the pre-embedded reinforcing bar 420 of the prefabricated staircase. The adjusting nut 320 is welded and fixed to the side wall of the sleeve 310. The end of the adjusting bolt 330 cooperates with the adjusting nut 320 and extends through the side wall of the sleeve 310 into the inner hole of the sleeve 310.

[0045] The support frame 100 of the bracket assembly can be made of angle steel. Before the concrete of the precast staircase is poured, it is installed on the precast aluminum template 410 of the precast staircase using pins 110 and pin plates. The two precast staircase embedded reinforcing bars 420 are inserted into the sleeves of the two sets of adjustment components respectively. The adjustment bolts 330 are tightened. The adjustment bolts 330 cooperate with the adjustment nuts 320. The end of the adjustment bolts 330 abuts against the side wall of the precast staircase embedded reinforcing bars 420. Since the inner diameter of the sleeve is only 1mm larger than the radius of the precast staircase embedded reinforcing bars 420, the horizontal displacement deviation of the embedded reinforcing bars 420 is ensured to be within 1mm, thereby achieving the purpose of precise positioning.

[0046] Example 2

[0047] Please see Figures 4 to 6 .

[0048] The only difference between this embodiment and Embodiment 1 is that the structure of the positioning component is different from that of the positioning component in Embodiment 1.

[0049] In this embodiment, the positioning assembly includes a first positioning rack 220, a second positioning rack 230, two limiting plates 270, two connecting plates 250, two positioning shafts 260, and two positioning gears 240.

[0050] The first positioning rack 220 is welded and fixed to the end of the support frame 100 of the bracket assembly at both ends. The second positioning rack 230 is detachably connected to the support frame 100 of the bracket assembly at both ends by bolts. The first positioning rack 220 and the second positioning rack 230 are arranged in parallel, and there is a gap between the first positioning rack 220 and the second positioning rack 230.

[0051] The two sets of adjusting components, two connecting plates 250, two positioning shafts 260, and two positioning gears 240 are in a one-to-one correspondence. The two positioning gears 240 are placed in the gap between the first positioning rack 220 and the second positioning rack 230, and the positioning gears 240 mesh with the first positioning rack 220 and the second positioning rack 230. The positioning gears 240 are mounted on the positioning shafts 260, which extend upward. One end of the connecting plate 250 is engaged with the corresponding positioning shaft 260 through a bearing 251. The other end of the connecting plate 250 is welded and fixed to one side of the corresponding limiting plate 270, and the other side of the limiting plate 270 is welded and fixed to the adjusting component sleeve 310.

[0052] The first positioning rack 220 and the second positioning rack 230 are respectively welded and fixed with baffles 280 on their upper and lower sides. The distance between the baffles 280 on the first positioning rack 220 and the baffles 280 on the second positioning rack 230 is less than the gap width between the first positioning rack 220 and the second positioning rack 230.

[0053] The positioning component of this embodiment can be used to flexibly adjust the position of the adjusting component sleeve 310 by adjusting the positions of the two positioning gears 240, so as to meet the needs of the pre-embedded reinforcing bars 420 of different prefabricated stairs.

[0054] The above descriptions are merely two embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the principle of this utility model, and these should also be considered to fall within the protection scope of this utility model.

Claims

1. A precast stair support reinforcement pre-embedded positioning device, characterized in that: Includes a support assembly, a positioning assembly, and several adjustment assemblies; The support assembly includes two support frames (100), the ends of which are detachably connected to the precast aluminum template (410) of the precast staircase, and the beginnings of which extend into the inside of the precast aluminum template (410) of the precast staircase. Several adjustment components are connected to the support assembly via positioning components. The adjustment components include a sleeve (310), an adjustment nut (320), and an adjustment bolt (330). The inner hole of the sleeve (310) matches the outer contour of the pre-embedded reinforcing bar (420) of the prefabricated staircase. The adjustment nut (320) is fixedly connected to the side wall of the sleeve (310). The end of the adjustment bolt (330) engages with the adjustment nut (320) and extends through the side wall of the sleeve (310) into the inner hole of the sleeve (310).

2. The precast stair support reinforcement pre-embedded positioning device according to claim 1, characterized in that: The positioning component includes a positioning seat (210), both ends of which are fixedly connected to the beginning ends of the two support frames (100) of the bracket assembly, and the sleeve (310) of the adjustment component is fixedly connected to the positioning seat (210).

3. The precast stair support reinforcement pre-embedded positioning device according to claim 1, characterized in that: The end of the support frame (100) of the bracket assembly is detachably connected to the precast aluminum template (410) of the precast staircase via pins (110) and pin plates.

4. The precast stair support reinforcement pre-embedded positioning device according to claim 1, characterized in that: The positioning assembly includes a first positioning rack (220), a second positioning rack (230), a plurality of connecting plates (250), a plurality of positioning shafts (260), and a plurality of positioning gears (240); The first positioning rack (220) is fixedly connected to the end of the support frame (100) of the bracket assembly at both ends, and the second positioning rack (230) is detachably connected to the support frame (100) of the bracket assembly at both ends. The first positioning rack (220) and the second positioning rack (230) are arranged in parallel, and there is a gap between the first positioning rack (220) and the second positioning rack (230). A number of adjusting components, a number of connecting plates (250), a number of positioning shafts (260), and a number of positioning gears (240) are in a one-to-one correspondence. The positioning gears (240) are placed in the gap between the first positioning rack (220) and the second positioning rack (230). The positioning gears (240) mesh with the first positioning rack (220) and the second positioning rack (230). The positioning gears (240) are mounted on the positioning shafts (260). One end of the connecting plate (250) is connected to the corresponding positioning shaft (260), and the other end of the connecting plate (250) is connected to the corresponding adjusting component sleeve (310).

5. The precast stair support reinforcement pre-embedded positioning device according to claim 4, characterized in that: The connecting plate (250) of the positioning component is connected to the positioning shaft (260) by a bearing (251).

6. The precast stair support reinforcement pre-embedded positioning device according to claim 4, characterized in that: The positioning component also includes several limiting plates (270), one side of which is fixedly connected to the adjusting component sleeve (310), and the other side of which is fixedly connected to the connecting plate (250).

7. The precast stair support reinforcement pre-embedded positioning device according to claim 4, characterized in that: The first positioning rack (220) and the second positioning rack (230) are respectively fixedly connected to baffles (280) on their upper and lower sides. The distance between the baffle (280) on the first positioning rack (220) and the baffle (280) on the second positioning rack (230) is less than the gap width between the first positioning rack (220) and the second positioning rack (230).

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