Quick-assembly and quick-disassembly type buckle connecting piece for single-side formwork supporting and construction method of quick-assembly and quick-disassembly type buckle connecting piece

Abstract

The invention provides a quick-assembly and quick-disassembly type buckle connecting piece for supporting a single-side formwork and a construction method. The connecting piece comprises a main body clamping base, a rotating support and a circular steel sleeve. The main body clamping base is composed of a closed fixed side and an openable movable side, and a special-shaped cavity precisely attached to the profile of the section of a standard double-spliced steel pipe is formed in the middle of the main body clamping base. Wherein the movable side is rotationally connected with the upper end of the fixed side, and a lug plate is arranged on the outer wall, away from the movable side, of the fixed side; the rotating support is rotationally connected with the lug plate; the inner diameter of the circular steel sleeve is smaller than the outer diameter of a supporting steel pipe of a standard scaffold, the supporting steel pipe is inserted into the circular steel sleeve, the upper end of the circular steel sleeve is fixed to the bottom of the rotating support, at least one pair of through bolt holes are formed in the pipe wall of the circular steel sleeve, and meanwhile drill holes or standard fastener holes are formed in the corresponding positions of the inserted supporting steel pipe. And the two are fixed through a quick-release bolt. The construction efficiency is fundamentally improved, safety is guaranteed, and the comprehensive cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a quick-installation and quick-release snap-fit ​​connector and construction method for single-sided formwork support. Background Technology

[0002] In cast-in-place concrete structure construction, the support and fixation of single-sided formwork is a critical technical step in scenarios such as walls, pipe galleries, and foundation pit support. Its efficiency and reliability directly affect construction safety, quality, and cost. Currently, the connection between the fixed single-sided formwork back brace (usually double-jointed steel pipes) and the external support system (usually scaffolding steel pipes) commonly uses traditional fasteners (such as right-angle fasteners and swivel fasteners). This method has a series of prominent drawbacks: First, the installation efficiency is extremely low. Each connection point requires manual alignment and bolt tightening by workers, resulting in high labor intensity and significant inconvenience when working at heights or in confined spaces, severely hindering construction progress. Second, the reliability of the connection is highly dependent on the workers' operating skills and sense of responsibility. Insufficient or excessive bolt preload can lead to loosening of the connection or damage to the fasteners, posing a significant safety hazard of support instability. Furthermore, traditional fasteners are multi-point components, which are prone to installation difficulties or even failure to install in complex support systems due to angular deviations, resulting in poor versatility and adaptability. Furthermore, frequent tightening and disassembly not only consumes a large amount of labor but also accelerates the wear and damage of fastener threads, increasing the cost of recycled materials. Finally, in situations requiring rapid formwork removal or support adjustment, traditional methods are also slow, failing to meet the demands of modern rapid construction. Therefore, construction sites urgently need a connection device and method that enables rapid, reliable, tool-free (or minimally tool-free) assembly and disassembly of single-sided formwork support systems to fundamentally improve construction efficiency, ensure safety, and reduce overall costs. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a quick-installation and quick-release snap-fit ​​connector and construction method for single-sided template support.

[0004] The specific plan is as follows: A quick-release snap-fit ​​connector for single-sided template support includes a main body bracket, a rotating support, and a circular steel sleeve with a locking mechanism. The main body bracket consists of a closed fixed side and an openable movable side, and has a shaped cavity in the middle that precisely matches the cross-sectional shape of a standard double-section steel pipe. The shaped cavity is in the shape of an "∞" or two connected circles, which can tightly wrap and lock the double-section steel pipe. The upper end of the movable side is rotatably connected to the fixed side, allowing it to be rotated outward to form a loading and unloading channel, allowing the double-section steel pipe to be directly loaded from the side. The entire assembly is inserted into or removed from the cavity, enabling instant "click-in" installation and disassembly without needing to insert it from the end of the steel pipe. An ear plate is provided on the outer wall of the fixed side away from the movable side. The rotating support is rotatably connected to the ear plate. The inner diameter of the circular steel sleeve is smaller than the outer diameter of the standard scaffolding support steel pipe, used to insert into the support steel pipe. Its upper end is fixed to the bottom of the rotating support. At least one pair of through-hole pin holes are provided on the wall of the circular steel sleeve, and corresponding holes or standard fastener holes are provided at the corresponding positions of the inserted support steel pipe. Both are fixed by quick-release pins. During installation, simply inserting a quick-release pin (such as a spring pin or R-type pin) through the holes in both the steel sleeve and the support steel pipe simultaneously instantly completes the secure connection and anti-detachment fixation, completely avoiding bolt tightening operations.

[0005] Furthermore, in the main body bracket, the upper ends of the fixed side and the movable side are rotatably connected by a connecting rotating shaft, and the lower ends are locked or disassembled by quick-release screws and quick-release nuts.

[0006] Furthermore, the ear plate is rotatably connected to the rotating support via a rotating hinge shaft. The ear plate can rotate freely around the hinge point within a certain angle range (usually ±10° to ±170°) to accommodate supporting steel pipes in different directions. The lower edge of the rotating support is provided with an annular limiting boss.

[0007] A construction method for a quick-release snap-fit ​​connector for single-sided formwork support includes: horizontally fixing a double-splitting steel pipe to the back rib of a single-sided formwork; opening the movable side of the connector, snapping it into the predetermined position of the double-splitting steel pipe, and then closing the snap; adjusting the ear plate and steel sleeve to the required angle; inserting the support steel pipe into the steel sleeve until it abuts against the limiting boss; inserting a quick-release pin to lock it; during disassembly, the order is reversed: pull out the pin, pull out the pipe, and open the snap to remove the connector.

[0008] The beneficial effects of this invention are as follows: This invention, through its integrated design of a "snap-fit ​​main body, hinged ear plate, and pin locking sleeve," delivers a revolutionary construction experience and comprehensive benefits. Its most significant advantage lies in achieving ultimate efficiency and convenience in support connections. The fasteners secure the double-splitter steel pipes in seconds via a simple "lateral snap-fit" action, while the connection to the supporting steel pipe is achieved through a two-step "insertion-pin" process. The entire process requires no heavy tools such as wrenches or hammers, increasing assembly and disassembly speed by 5-10 times compared to traditional fasteners. This significantly reduces labor intensity and is particularly suitable for construction conditions requiring frequent assembly and disassembly, thus significantly accelerating the construction progress.

[0009] Secondly, this solution offers superior connection reliability and safety. The one-piece molded bracket and double-jointed steel pipes achieve large-area surface contact, ensuring uniform force distribution and overcoming the drawbacks of slippage caused by point contact fasteners. The pin locking mechanism provides a clear and reliable mechanical interlock, eliminating concerns about bolt loosening. The limiting boss ensures the effective bearing length of the supporting steel pipe, making the force transmission path of the entire support system clear and stable, greatly reducing the safety risks caused by connection failures, and improving the overall rigidity and safety margin of the formwork support.

[0010] Third, this connector boasts excellent adaptability and versatility. The hinged ear plate design allows for a certain degree of angle adjustment of the supporting steel pipe in three-dimensional space, flexibly adapting to various complex support angles and site conditions, thus solving the installation difficulties of traditional fasteners when connecting at non-right angles. Furthermore, its core bayonet and socket are designed for the most commonly used standard steel pipe sizes on construction sites, ensuring strong versatility and eliminating the need for customization.

[0011] Finally, this invention has significant economic benefits and promotional value. It reduces high-altitude work time, lowers safety risks and management costs. Its robust steel structure design is far more durable than traditional cast iron fasteners, with a longer service life, more turnover times, and lower amortization costs. Although the unit cost may be slightly higher than ordinary fasteners, the comprehensive economic benefits it brings, such as increased efficiency, enhanced safety, and labor savings, are extremely prominent. It aligns with the development trend of industrialized and prefabricated construction and has broad market application prospects. Attached Figure Description

[0012] Figure 1 This is an exploded view of the connector of the present invention.

[0013] Figure 2 This is an assembly diagram of the connector of the present invention.

[0014] Figure 3 This is an installation effect diagram of the present invention.

[0015] List of reference numerals in the attached diagram: 1- Circular steel sleeve; 2- Quick-release pin; 3- Annular limiting boss; 4- Rotating hinge shaft; 5- Ear plate; 6- Main body bracket; 7- Connecting rotating shaft; 8- Quick-install screw; 9- Quick-install nut; 10- Double-jointed steel pipe; 11- Single-sided concrete structure; 12- Supporting keel; 13- Template; 14- Embedded steel pipe or reinforcing bar; 15- Ordinary round steel pipe. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] As shown in the figure, this invention provides a quick-installation and quick-release snap-fit ​​connector for single-sided template support, including a main body bracket 6, a rotating support, and a circular steel sleeve 1 with a locking mechanism. The main body bracket consists of a closed fixed side and an openable movable side, and has a shaped cavity in the middle that precisely matches the cross-sectional shape of a standard double-section steel pipe 10. The shaped cavity is in the shape of an "∞" or two connected circles, which can tightly wrap and lock the double-section steel pipe. The movable side is rotatably connected to the upper end of the fixed side for rotating outward to open and form a loading and unloading channel, allowing the double-section steel pipe to be directly... The cavity is inserted or removed from the side as a whole, thus achieving instant "click-in" installation and disassembly without needing to insert it from the end of the steel pipe. An ear plate 5 is provided on the outer wall of the fixed side away from the movable side. The rotating support is rotatably connected to the ear plate. The inner diameter of the circular steel sleeve 1 is smaller than the outer diameter of the standard scaffolding support steel pipe 15, used to insert into the support steel pipe. The upper end is fixed to the bottom of the rotating support. At least one pair of through-hole pin holes are provided on the wall of the circular steel sleeve 1, and corresponding holes or standard fastener holes are provided at the corresponding positions of the inserted support steel pipe. The two are fixed by quick-release pins 2. During installation, simply pass one quick-release pin (such as a spring pin or R-type pin) through the holes of both the steel sleeve and the support steel pipe simultaneously to instantly complete the secure connection and anti-detachment fixation between the two, completely avoiding bolt tightening operations.

[0018] In this embodiment, the upper ends of the fixed side and the movable side of the main body bracket are rotatably connected by a connecting rotating shaft 7, and the lower ends are locked or disassembled by quick-release screws 8 and quick-release nuts 9.

[0019] In this embodiment, the ear plate is rotatably connected to the rotating support via a rotating hinge shaft. The ear plate can rotate freely around the hinge point within a certain angle range (usually ±10° to ±170°) to accommodate supporting steel pipes in different directions. The lower edge of the rotating support is provided with an annular limiting boss 3.

[0020] This invention also provides a construction method for a quick-installation and quick-release snap-fit ​​connector for single-sided template support, comprising: horizontally fixing the double-splitting steel pipe to the back rib of the single-sided template 13; opening the movable side of the connector, snapping it into the predetermined position of the double-splitting steel pipe, and then closing the snap; adjusting the ear plate and steel sleeve to the required angle; inserting the support steel pipe into the steel sleeve until it hits the limiting boss; inserting the quick-release pin to lock it; during disassembly, the order is reversed, pulling out the pin, pulling out the pipe, and opening the snap to remove the connector.

[0021] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A quick-installation and quick-release snap-fit ​​connector for single-sided template support, characterized in that, The system includes a main mounting base, a rotating support, and a circular steel sleeve. The main mounting base consists of a closed fixed side and an openable movable side, with a centrally located irregular cavity that precisely matches the cross-sectional shape of a standard double-section steel pipe. The movable side is rotatably connected to the upper end of the fixed side, allowing it to be rotated outwards to form a loading and unloading channel, enabling the double-section steel pipe to be directly inserted into or removed from the cavity from the side. The outer wall of the fixed side away from the movable side is provided with an ear plate. The rotating support is rotatably connected to the ear plate. The inner diameter of the circular steel sleeve is smaller than the outer diameter of the standard scaffolding support steel pipe, and it is used to insert the support steel pipe. Its upper end is fixed to the bottom of the rotating support. The circular steel sleeve has at least one pair of through pin holes on its wall, and corresponding holes or standard fastener holes are provided at the position of the inserted support steel pipe. Both are fixed by quick-release pins.

2. The quick-installation and quick-release snap-fit ​​connector for single-sided template support according to claim 1, characterized in that, In the main body bracket, the upper ends of the fixed side and the movable side are rotatably connected by a connecting rotating shaft, and the lower ends are locked or disassembled by quick-release screws and quick-release nuts.

3. A quick-installation and quick-release snap-fit ​​connector for single-sided template support according to claim 1, characterized in that, The ear plate is rotatably connected to the rotating support via a rotating hinge shaft; the lower edge of the rotating support is provided with an annular limiting boss.

4. A construction method for a quick-installation and quick-release snap-fit ​​connector for single-sided formwork support, based on the connector as described in any one of claims 1-3, characterized in that, include: The double-splittered steel pipes are horizontally fixed to the back rib of the single-sided template; Open the movable side of the connector, insert it into the predetermined position of the double-jointed steel pipe, and then close the bayonet; adjust the ear plate and steel sleeve to the required angle; insert the support steel pipe into the steel sleeve until it hits the limiting boss; insert the quick-release pin to lock it; when disassembling, the order is reversed: pull out the pin, pull out the pipe, and open the bayonet to remove the connector.

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