A device for avoiding chiseling at the joint of a staircase and its formwork construction method

Abstract

The present invention provides a stair joint-free chiseling device and its formwork construction method, which includes a joint-free chiseling component, a sealed cleaning port component, and a keel groove support component, wherein: the joint-free chiseling component includes a closing net and a baffle. The closing net is fixed on the formworks on both sides of the stair, and the baffle is arranged on one side of the closing net and is perpendicular to the formworks on both sides of the stair. A clamping groove is provided at the end of the baffle for fixing the closing net; the keel support component is arranged at the bottom of the joint-free chiseling component. The keel support component includes a keel groove made of square steel for supporting the overall stair formwork; the sealed cleaning port component includes a cover plate and a support strip. The support strip is connected to the square steel of the keel groove, and the cover plate is arranged on the top of the support strip. The beneficial effect of the present invention is to avoid secondary chiseling treatment, strengthen the stiffness of the formwork system to improve the forming quality, and at the same time improve the cleaning port to avoid slurry leakage at the cleaning port.

Description

Technical Field

[0001] The present invention belongs to the technical field of main structure construction, and particularly relates to a device for avoiding chiseling at the joint of a staircase and a formwork construction method thereof. Background Art

[0002] With the development of the construction industry, high-rise buildings have become the mainstream of the current building form. In high-rise buildings, the staircase, as the most important safety passage in an emergency, plays a crucial role. The safety, simplicity, practicality of staircase design, and the convenience of construction have become the future development direction.

[0003] At present, the segmented pouring construction method adopted for building staircases uses the method of pre-pouring the upper three steps, which greatly reduces the construction difficulty and cost. However, leaving the joint of the upper three steps, problems such as height deviation caused by formwork turnover and secondary formwork erection and excessive formwork joints in subsequent construction often result in poor control of the forming quality of the staircase, and the treatment of the construction joint is often time-consuming and laborious and generates a large amount of dust.

[0004] Therefore, it is particularly important to improve the construction quality and aesthetic degree of the joint position of the upper three steps.

[0005] Generally, the general construction method for the upper three steps requires chiseling when treating the joint surface. This construction method requires removing the upper three-step baffle, and it is easy to have gaps at the edge after chiseling. Moreover, under the limitation of the formwork service life, the deformation generated at the formwork edge of the conventional cleaning port and the pull-out cleaning port easily leads to splicing gaps between the formwork and the cleaning port cover plate, which not only affects the structural quality but also greatly affects the appearance effect of the component. At present, this problem has become a common quality problem in the construction industry.

[0006] Therefore, how to avoid the occurrence of such problems during the engineering construction process, research a device for avoiding chiseling at the joint of a staircase and a formwork construction method thereof, to ensure the forming quality of the joint of the upper three steps while simplifying the construction method, achieving the purpose of cost saving, improving the aesthetic degree, and protecting the environment. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems in the background art and provide a device for avoiding chiseling at the joint of a staircase and a formwork construction method thereof.

[0008] To solve the above technical problems, the technical solution adopted by the present invention is: a device for avoiding chiseling at the joint of a staircase, including a joint chiseling avoidance component, a sealed cleaning port component, and a keel groove support component, wherein:

[0009] The joint-free chiseling component includes a closing net and a baffle. The closing net is fixed on the formworks on both sides of the staircase. The baffle is arranged on one side of the closing net and is perpendicular to the formworks on both sides of the staircase. A clamping groove is provided at the end of the baffle for fixing the closing net.

[0010] The keel support component is arranged at the bottom of the joint-free chiseling component. The keel support component includes a keel groove made of square steel for supporting the overall staircase formwork.

[0011] The sealing and cleaning port component includes a cover plate and a supporting strip. The supporting strip is connected to the square steel of the keel groove, and the cover plate is arranged on the top of the supporting strip.

[0012] Preferably, a handle is provided on the closing net, and the handle is placed inside the clamping groove.

[0013] Preferably, the joint-free chiseling component further includes a scraping plate. The scraping plate is arranged on the other side of the closing net. The scraping plate is fixed to the clamping groove through a second connecting piece and extends downward to the edge of the concrete staircase section.

[0014] Preferably, the sealing and cleaning port component further includes a gasket, and the gasket is arranged to cover the periphery of the cover plate.

[0015] Preferably, the scraping plate is made of stainless steel plate.

[0016] Preferably, a first connecting part is provided on the square steel, and a second connecting part is provided on the supporting strip. The first connecting part and the second connecting part are detachably connected through a first connecting piece.

[0017] Preferably, the gasket is made of rubber gasket.

[0018] A formwork support method for a staircase joint-free chiseling device includes the following steps:

[0019] S1: After the formworks on both sides of the staircase are installed, fix the joint-free chiseling component on the formworks on both sides of the staircase;

[0020] S2: After fixing, pour the staircase section;

[0021] S3: After the concrete is initially formed, create a chiseling effect on the joint surface. After the concrete solidifies, remove the joint-free chiseling system;

[0022] S4: Remove the cleaning port component from the keel groove, clean the waste inside the formwork and the dust around the gasket, and then reinstall it.

[0023] Preferably, in step S1, fixing the joint-free chiseling component on the formworks on both sides of the staircase includes:

[0024] S11: Fix the non-chiseling system on the formworks 1 on both sides of the staircase with small nails. Ensure that the rear baffle 2 is perpendicular to the formwork surface during fixation.

[0025] S12: Lift the perforated mesh with a handle and place it in the card slot.

[0026] Preferably, in step S3, it includes:

[0027] After the concrete is initially formed, lift the handle to create a chiseling effect on the joint surface. The scraper protects the integrity of the concrete edge while lifting. After the concrete solidifies, remove the non-chiseling system.

[0028] The advantages and positive effects of the present invention are:

[0029] 1. By setting up a liftable perforated mesh and a scraper, which cooperate with each other, the perforated mesh processes the joint surface to form a chiseling surface effect, avoiding secondary chiseling, with neat closing, convenient construction, and being clean and environmentally friendly.

[0030] 2. By setting up a perforated mesh at the joint, and lifting it evenly when the concrete is in the initial setting stage, a chiseling-like effect is formed on the joint surface, eliminating the need for the later chiseling process. The sealed cover plate has a rubber pad wrapped around the embedded part of the cover plate, which has better sealing performance, more turnover times, is convenient to disassemble, and can effectively avoid quality problems such as slurry leakage and pitted surface compared with the traditional method.

[0031] 3. By setting up a scraper to clean the excess concrete while lifting the perforated mesh and avoiding damage to the concrete edge by the perforated mesh, the forming quality and aesthetic degree of the component are ensured.

[0032] 4. By setting up a square steel keel groove, the installation process of the system is made more convenient and can effectively avoid the position deviation of the keel caused by loosening, disturbance, secondary support, etc., ensuring the integrity of the staircase pouring. The two square tubes on both sides can effectively clamp the formwork in the keel groove, improving the stability of the staircase and solving the problems of formwork bulging and misalignment on both sides. Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of an embodiment of the staircase joint non-chiseling device of the present invention;

[0034] Figure 2 is a partially enlarged side view schematic structural diagram of an embodiment of the staircase joint non-chiseling device of the present invention;

[0035] Figure 4 is a schematic structural diagram of the sealed cleaning port assembly of an embodiment of the staircase joint non-chiseling device of the present invention;

[0036] Figure 3It is a schematic structural diagram of the joint-free chiseling component of an embodiment of the staircase joint-free chiseling device of the present invention;

[0037] Figure 5 It is a schematic layout diagram of the keel groove square steel of an embodiment of the staircase joint-free chiseling device of the present invention.

[0038] In the figure:

[0039] 1. Formwork 2. Baffle 3. Perforated sheeting

[0040] 4. Handle 5. Card slot 6. Scraper

[0041] 7. Keel groove 8. Screw hole 9. Screw

[0042] 10. Support strip 11. Cover plate 12. Gasket Detailed implementation manners

[0043] Figure 1 It is a schematic structural diagram of this embodiment. As Figure 1 shown, this embodiment provides a staircase joint-free chiseling device, which includes a joint-free chiseling component, a sealed cleaning port component, and a keel groove support component. Among them:

[0044] Figure 2 It is a schematic side structural diagram of this embodiment. As Figure 2 shown, the joint-free chiseling component includes a perforated sheeting 3 and a baffle 2. The perforated sheeting 3 is fixed on the formworks 1 on both sides of the staircase. The baffle 2 is arranged on one side of the perforated sheeting 3. Specifically, the baffle 2 is arranged behind the perforated sheeting 3 to block the perforated sheeting 3 and play a certain role in correcting the perforated sheeting 3. The baffle 2 is made of wooden formwork, and its size is determined according to the actual size of the staircase. When this joint-free chiseling component is used, the baffle 2 is first placed at the joint position, and after snapping the line, small steel nails are embedded and fixed on both sides of the outer formwork of the staircase. The baffle 2 is perpendicular to the formworks 1 on both sides of the staircase. A card slot 5 is provided at the end of the baffle 2. The card slot 5 is made of thin steel plate for fixing the perforated sheeting. When in use, a quick-install perforated sheeting 3 is used to process the joint surface to form a chiseling surface effect, and the whole is fixed on the formworks 1 on both sides of the staircase with steel nails.

[0045] Figure 3 It is a schematic structural diagram of the keel groove square steel layout of this embodiment. As Figure 3 shown, the keel support component is arranged at the bottom of the joint-free chiseling component. The keel support component includes a keel groove 7 made of square steel for supporting the overall staircase formwork. The specifications and dimensions of the square steel pipes are determined according to the actual construction situation;

[0046] Figure 4 It is a schematic structural diagram of the sealed cleaning port component of this embodiment. As Figure 4As shown in the figure, the sealed cleaning port assembly includes a cover plate 11 and a support strip 10. By setting the sealed cleaning port assembly, the construction waste remaining in the staircase can be cleaned. The support strip 10 is connected to the square steel in the keel groove 7, and the cover plate 11 is arranged on the top of the support strip 10. During use, the support strip 10 is fixed on the square steel, and the cleaning port cover plate 11 is fixed on the upper part of the support strip 10. While ensuring that the position of the staircase does not shift, the construction waste remaining in the staircase can be cleaned. The use method of this cleaning groove has the characteristics of firm fixation, no slurry leakage, and long turnover life compared with the previous pull-out type cleaning port. The entire support keel system is reinforced with a steel skeleton square pipe groove, which improves the stiffness compared with traditional wooden squares and reduces the height deviation of the secondary construction of the staircase, and can enhance the stability of the system.

[0047] As an optional implementation method, Figure 5 is a schematic structural diagram of the joint-free chiseling component of this embodiment. As shown in Figure 5 the figure, a handle 4 is provided on the lathing 3, and the handle 4 is placed inside the card slot 5. During use, the handle 4 is made of steel bars at the top of the lathing 3, and the lathing 3 is connected and fixed to the handle 4 for convenient lifting. Before use, the lathing 3 is evenly coated with a release agent to avoid adhesion to the concrete.

[0048] During use, first place the baffle 2 at the joint position, and after snapping the line, use small steel nails to embed and fix it on both sides of the staircase outer formwork 1. Lift the handle 4 to place the lathing 3 in the card slot 5. When the concrete starts to set, slowly lift the handle 4 to make the lathing 3 move upward. While moving, the lathing 3 forms a surface similar to a chiseled surface on the concrete joint surface.

[0049] As an optional implementation method, the joint-free chiseling component further includes a scraper 6, and the scraper 6 is arranged on the other side of the lathing 3. During use, the scraper 6 is arranged at the front end of the lathing 3 and is closely attached to the lathing 3. By setting the scraper 6, the scraper 6 cleans the excess concrete while the lathing 3 is lifted and avoids damage to the concrete edge by the lathing 3. When subsequent stair section construction is carried out, pull out the fixed steel nails and remove the mold.

[0050] The scraper 6 is fixed to the card slot 5 through a second connecting piece and extends downward to the edge of the concrete stair section. Specifically, the scraper 6 is made of a stainless steel plate, and the second connecting piece is made of self-tapping screws. During use, it is fixed to the card slot 5 with self-tapping screws and extends downward to the edge of the concrete stair section.

[0051] As an alternative implementation, the sealed cleaning port assembly further includes a gasket 12, and the gasket 12 is arranged to cover the periphery of the cover plate 11. In this embodiment, the gasket is a rubber gasket. During use, the periphery of the cleaning port cover plate is surrounded by a thin rubber strip, and the rubber strip is pasted around the cover plate 11. By using a rubber gasket to cover the periphery of the cover plate 11, it is possible to prevent the formwork from leaking slurry due to gaps caused by repeated turnover use, and it can well protect the integrity of the joint edge without chiseling. At the same time, it also avoids the problem of slurry leakage caused by gaps formed in the cleaning port due to repeated turnover. While increasing the turnover life and saving costs, it improves the forming quality and appearance of the staircase and reduces construction dust, which is more convenient and stable than the traditional construction method.

[0052] As an alternative implementation, the square steel is provided with a first connecting portion, and the support plate strip is provided with a second connecting portion. The first connecting portion and the second connecting portion are detachably connected by a first connecting member. Specifically, both the first connecting portion and the second connecting portion are arranged as screw holes 8, and the first connecting member is arranged as a screw 9. Specifically, screw holes 8 are provided in the square steel below the keel groove 7 at the position of the cleaning groove. When in use, a screw 9 matching the hole diameter is used to pass through the screw hole 8. When using the cleaning groove, first, the screw 9 fixing the square steel of the keel groove through the screw hole 8 is unscrewed, and the lower support plate strip 10 and the cleaning port cover plate 11 connected thereto are removed. After cleaning the sundries and waste materials, a high-pressure water gun is used to flush the joint surface and the rubber gasket 12 together. After flushing, it is reinstalled in the reverse order of the original method. The keel groove 7 leaves a space at the cleaning port position for convenient disassembly. After the cover plate 11 is installed, the subsequent casting construction of the staircase can be directly carried out.

[0053] Compared with the traditional method, the construction is more convenient, the stiffness is improved, and the height deviation of the secondary construction of the staircase is reduced. The integrity of the staircase formwork and the edge of the stair section concrete is better, the number of turnovers is more, and the disassembly is convenient, which can effectively avoid quality problems such as slurry leakage and pitted surface.

[0054] A formwork support method for a staircase joint chiseling-free device, aiming to avoid slurry leakage and offset at the joint during the erection of the staircase formwork, ensuring the convenience, safety and appearance quality of the installation of the staircase formwork, applicable to the construction where the joint surface is not neat and the deformation of the cleaning port formwork affects the forming quality during the staircase formwork support, including the following steps:

[0055] S1: After the formwork on both sides of the staircase is installed, the joint chiseling-free assembly is fixed on the formwork on both sides of the staircase. By adding a customized quick-installing wire mesh 3 at the position of the upper three-step baffle on the staircase, the wire mesh 3 cooperates with the baffle 2 to intercept the concrete during pouring. Specifically, it includes:

[0056] S11: Fix the chiseling-free system on the formwork 1 on both sides of the staircase with small nails, and ensure that the rear baffle 2 is perpendicular to the plate surface during fixation;

[0057] S12: Lift the wire mesh with your hand and place it in the card slot;

[0058] S2: After fixation, pour the flight of stairs.

[0059] S3: After the concrete is initially formed, use the handle 4 to lift the perforated sheeting 3, creating a chiseled effect on the joint surface. After the concrete solidifies, remove the no-chiseling system. Specifically, after the concrete is initially formed, lift the handle 4 to create a chiseled effect on the joint surface. The scraper 6 protects the integrity of the concrete edge while being lifted. After the concrete solidifies, remove the no-chiseling system.

[0060] S4: Remove the cleanout assembly from the keel groove, clean the waste inside the formwork and the dust around the gasket, and then reinstall it. Specifically, remove the screw 9 on the keel groove 7 from the screw hole 8, remove the support strip 10 and the cover plate 11, clean the waste inside the formwork and the dust around the rubber gasket 12, and then reinstall it. The keel groove 7 leaves a space at the cleanout position for easy disassembly. Before pouring the stairs, remove the screws of the bottom cover plate 11. After removing the cover plate 11, clean the residual concrete waste. After cleaning, put the cover plate 11 back and tighten the screws. The periphery of the cover plate 11 is covered with a rubber gasket 12 to prevent leakage of concrete due to gaps caused by repeated use of the formwork.

[0061] The beneficial effects of the present invention are:

[0062] 1. By setting the lift-type perforated sheeting and the scraper, they cooperate with each other. The perforated sheeting processes the joint surface to form a chiseled surface effect, avoiding secondary chiseling, with neat jointing, convenient construction, and being clean and environmentally friendly.

[0063] 2. By setting the perforated sheeting at the joint, and lifting it evenly when the concrete is initially setting, a chiseled effect is formed on the joint surface, eliminating the need for the later chiseling process. The sealed cover plate has its embedded part surrounded by a rubber gasket, which has better sealing performance, more turnover times, and is convenient for disassembly compared with the traditional method, and can effectively avoid quality problems such as leakage of concrete and pitted surface.

[0064] 3. By setting the scraper, while cleaning the excess concrete when the perforated sheeting is lifted, it avoids damage to the concrete edge by the perforated sheeting, ensuring the forming quality and aesthetic degree of the component.

[0065] 4. By setting the square steel keel groove, the installation process of the system is made more convenient and can effectively avoid position deviation of the keel caused by loosening, disturbance, secondary support, etc., ensuring the integrity of the stair pouring. The two square tubes on both sides can effectively clamp the formwork in the keel groove, improving the stability of the stairs and solving the problems of formwork bulging and misalignment on both sides.

[0066] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A staircase joint chiseling-free device, characterized in that, It includes a joint-free chiseling component, a sealed cleaning port component, and a keel groove support component, where: The joint-free chiseling component includes a closing net and a baffle. The closing net is fixed on the formworks on both sides of the staircase. The baffle is arranged on one side of the closing net and is perpendicular to the formworks on both sides of the staircase. A clamping groove is provided at the end of the baffle for fixing the closing net. The keel groove support component is arranged at the bottom of the joint-free chiseling component. The keel groove support component includes a keel groove made of square steel for supporting the overall staircase formwork. The sealed cleaning port component includes a cover plate and a supporting strip. The supporting strip is connected to the square steel of the keel groove, and the cover plate is arranged on the top of the supporting strip.

2. The staircase joint chiseling-free device according to claim 1, characterized in that: A handle is provided on the closing net, and the handle is placed inside the clamping groove.

3. The stair joint non-chiseling device according to claim 1 or 2, characterized in that: The joint-free chiseling component further includes a scraper. The scraper is arranged on the other side of the closing net. The scraper is fixed to the clamping groove through a second connecting piece and extends downward to the edge of the concrete staircase section.

4. The stair joint chiseling-free device according to claim 1, characterized in that: The sealed cleaning port component further includes a gasket. The gasket is arranged to cover the periphery of the cover plate.

5. The staircase joint chiseling-free device according to claim 3, characterized in that: The scraper is made of stainless steel plate.

6. The staircase joint chiseling-free device according to claim 1, characterized in that: A first connecting part is provided on the square steel, and a second connecting part is provided on the supporting strip. The first connecting part and the second connecting part are detachably connected through a first connecting piece.

7. The staircase joint chiseling-free device according to claim 4, characterized in that: The gasket is made of rubber gasket.

8. A formwork support method for a staircase joint without chiseling, characterized in that, Using the staircase joint-free chiseling device according to any one of claims 1-7, it includes the following steps: S1: After the formworks on both sides of the staircase are installed, fix the joint-free chiseling component on the formworks on both sides of the staircase. S2: After fixing, pour the staircase section. S3: After the concrete is initially formed, create a chiseling effect on the joint surface. After the concrete solidifies, remove the joint-free chiseling system. S4: Remove the cleaning port component from the keel groove, clean the waste materials inside the formwork and the dust around the gasket, and then reinstall it.

9. The formwork erection method of the stair joint chiseling-free device according to claim 8, characterized in that In step S1, fixing the joint-free chiseling component on the formworks on both sides of the staircase includes: S11: Fix the joint-free chiseling system on the formworks on both sides of the staircase with small nails. When fixing, ensure that the rear baffle is perpendicular to the formwork surface. S12: Lift the closing net with the handle and place it in the clamping groove.

10. The formwork support method for the staircase joint chiseling-free device according to claim 8 or 9, characterized in that In step S3, it includes: After the concrete is initially formed, lift the handle to create a chiseling effect on the joint surface. The scraper protects the integrity of the concrete edge while being lifted. After the concrete solidifies, remove the joint-free chiseling system.

Images