Pre-buried anti-leakage mortar formwork reinforcing device and system for cast-in-place stair construction joint

Abstract

The application relates to a pre-buried anti-leakage formwork reinforcing device and system for a cast-in-place stair construction joint, and relates to the field of building formworks. The pre-buried anti-leakage formwork reinforcing device for the cast-in-place stair construction joint comprises a sealing assembly, a bolt assembly, a sleeve assembly and a fastening assembly. The sealing assembly comprises a bottom cast-in-place formwork, two side cast-in-place formworks connected to the two sides of the bottom cast-in-place formwork, a bottom sealing sponge strip arranged on the top surface of the bottom cast-in-place formwork and connecting holes arranged along the width direction of the bottom cast-in-place formwork. The bolt assembly comprises screw rods respectively penetrating through the connecting holes and the bottom sealing sponge strip. The sleeve assembly comprises threaded sleeves respectively connected to the screw rods, and the outer wall of the threaded sleeves is connected with a plurality of steel columns. The fastening assembly is used for pressing and fixing the bottom cast-in-place formwork to the bottom of each threaded sleeve. The pre-buried anti-leakage formwork reinforcing device and system for the cast-in-place stair construction joint can improve the structural strength and tightness of the connection between the formwork and the cast-in-place concrete stair, and can avoid the leakage of the construction joint.

Description

Technical Field

[0001] This application relates to the field of building formwork, and more specifically, to a pre-embedded anti-leakage formwork reinforcement device and system for construction joints of cast-in-place stairs. Background Technology

[0002] Cast-in-place reinforced concrete staircases have the advantages of high structural strength and strong load-bearing capacity. However, they require a large number of formwork for construction, and problems such as grout leakage at construction joints and unstable formwork reinforcement are prone to occur during the pouring process. In severe cases, these issues can affect the construction quality of the cast-in-place reinforced concrete staircases, making construction more difficult and failing to meet construction requirements. Utility Model Content

[0003] The purpose of this application is to provide a pre-embedded anti-leakage formwork reinforcement device and system for construction joints of cast-in-place stairs, which can effectively improve the structural strength and tightness of the connection between the formwork and the cast-in-place concrete stairs, and avoid grout leakage defects at construction joints.

[0004] This application is implemented as follows: This application provides a pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs, which includes: The sealing assembly includes a bottom cast-in-place formwork, two side cast-in-place formworks respectively connected to the two sides of the bottom cast-in-place formwork, and a bottom sealing sponge strip set on the top surface of the bottom cast-in-place formwork. The bottom cast-in-place formwork is provided with connecting holes spaced apart along the width direction. The bottom sealing sponge strip and the connecting holes are located below the construction joint of the cast-in-place staircase. Bolt assembly, including threaded rods that pass through each connection hole and the bottom sealing sponge strip; The sleeve assembly includes threaded sleeves that are connected to the top of each screw in a one-to-one manner, and multiple steel columns are connected to the outer wall of each threaded sleeve; Fastening components are used to press and fix the bottom cast-in-place formwork to the bottom of each threaded sleeve.

[0005] In some alternative implementations, the end of the threaded sleeve away from the screw is connected to an end cap, and the end of the threaded sleeve near the bottom cast-in-place template is connected to a pressure ring that presses against the bottom sealing sponge strip.

[0006] In some alternative implementations, the fastening assembly includes multiple pairs of transverse timbers and multiple U-shaped clamps with a U-shaped cross-section. Each pair of transverse timbers is respectively located on both sides of each screw passing through each connection hole. Each screw is fitted with a U-shaped clamp, the middle and both ends of which press against the bottom and both sides of a corresponding pair of transverse timbers.

[0007] In some alternative implementations, the fastening assembly also includes multiple pairs of longitudinal timbers, each pair of longitudinal timbers being disposed on both sides of multiple threaded rods spaced apart along the length of the bottom cast-in-place formwork, with the top of each pair of transverse timbers pressing against the bottom of each pair of longitudinal timbers.

[0008] In some alternative implementations, the screw is connected to a nut that presses against the bottom of the corresponding U-shaped plate. The end of the nut near the corresponding U-shaped plate is connected to a washer fitted onto the screw.

[0009] In some alternative implementations, multiple fixing plates are also included, each of which is fitted onto a threaded rod passing through a set of connection holes.

[0010] In some alternative implementations, multiple connecting steel plates are also included, with the steel columns detachably connected to the threaded sleeves, each connecting steel plate being fitted onto a threaded sleeve connected to a set of connecting holes for each screw.

[0011] In some alternative implementations, the two adjacent sides of the cast-in-place side formwork are respectively provided with side sealing sponge strips that connect the bottom and the two ends of the bottom sealing sponge strip.

[0012] In some alternative implementations, a rotating handwheel is connected to the bottom of the screw.

[0013] This application also provides a pre-embedded anti-leakage formwork reinforcement system for cast-in-place stair construction joints, which includes the aforementioned pre-embedded anti-leakage formwork reinforcement device for cast-in-place stair construction joints.

[0014] The beneficial effects of this application are as follows: The pre-embedded anti-leakage formwork reinforcement device for cast-in-place stair construction joints provided by this application includes a sealing component, a bolt component, a sleeve component, and a fastening component. The sealing component includes a bottom cast-in-place formwork, two side cast-in-place formworks respectively connected to the bottom cast-in-place formwork on both sides, and a bottom sealing sponge strip located on the top surface of the bottom cast-in-place formwork. The bottom cast-in-place formwork has connection holes spaced apart along the width direction. The bottom sealing sponge strip and the connection holes are located below the cast-in-place stair construction joint. The bolt component includes threaded rods that pass through each connection hole and the bottom sealing sponge strip. The sleeve component includes threaded sleeves that are connected to the top of each threaded rod, and multiple steel columns are connected to the outer wall of each threaded sleeve. The fastening component is used to press and fix the bottom cast-in-place formwork to the bottom of each threaded sleeve. The pre-embedded anti-leakage formwork reinforcement device and system for cast-in-place stair construction joints provided by this application can improve the structural strength and tightness of the connection between the formwork and the cast-in-place concrete staircase by using the threaded sleeves connected by the threaded rods, and improve the sealing performance by pressing the bottom sealing sponge strip with the threaded sleeves to avoid grout leakage defects in the construction joint. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A partial structural diagram of the cast-in-place staircase obtained by constructing the pre-embedded anti-leakage formwork reinforcement device for the construction joint of the cast-in-place staircase provided in Embodiment 1 of this application; Figure 2 A schematic diagram of the connection hole provided on the bottom cast-in-place template after omitting the side cast-in-place template and the bottom sealing sponge strip in the pre-embedded anti-leakage template reinforcement device for the construction joint of the cast-in-place staircase provided in Embodiment 1 of this application; Figure 3 The partial structural diagram of the pre-embedded anti-leakage formwork reinforcement device for the construction joint of the cast-in-place staircase provided in Embodiment 1 of this application omits the bottom cast-in-place formwork, the side cast-in-place formwork, the bottom sealing sponge strip, and the longitudinal timber. Figure 4 This is a schematic diagram of the connection between the screw, threaded sleeve and end cap in the pre-embedded anti-leakage template reinforcement device for the construction joint of a cast-in-place staircase provided in Embodiment 1 of this application. Figure 5 The partial structural diagram of the pre-embedded anti-leakage formwork reinforcement device for the construction joint of the cast-in-place staircase provided in Embodiment 2 of this application omits the bottom cast-in-place formwork, the side cast-in-place formwork, the bottom sealing sponge strip, and the longitudinal timber.

[0017] In the diagram: 100, bottom cast-in-place formwork; 110, side cast-in-place formwork; 120, bottom sealing sponge strip; 130, connecting hole; 140, side sealing sponge strip; 200, screw; 210, nut; 220, washer; 230, rotating handwheel; 300, threaded sleeve; 310, steel column; 320, end cap; 330, pressure ring; 400, transverse timber; 410, U-shaped clamping plate; 420, longitudinal timber; 500, fixing steel plate; 600, connecting steel plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The features and performance of the pre-embedded anti-leakage formwork reinforcement device for the construction joint of cast-in-place stairs of this application are further described in detail below with reference to the embodiments.

[0026] Example 1 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application embodiment provides a pre-embedded anti-leakage formwork reinforcement device for cast-in-place stair construction joints, which includes a sealing component, a bolt component, a sleeve component, and a fastening component; wherein, the sealing component includes a bottom cast-in-place formwork 100, two side cast-in-place formworks 110 whose bottoms are respectively connected to both sides of the bottom cast-in-place formwork 100, and a bottom sealing sponge strip 120 provided on the top surface of the bottom cast-in-place formwork 100. The bottom cast-in-place formwork 100 is provided with three connecting holes 130 arranged at intervals along its width direction. The bottom sealing sponge strip 120 extends along the width direction of the bottom cast-in-place formwork 100 and is located below the cast-in-place stair construction joint along with the three connecting holes 130. The two side cast-in-place formworks 110 are respectively provided with side sealing sponge strips 140 whose bottoms are connected to both ends of the bottom sealing sponge strip 120; the bolt component includes a screw 200 that passes through each connecting hole 130 and the bottom sealing sponge strip 120 from bottom to top.

[0027] The sleeve assembly includes threaded sleeves 300 connected to the top of each screw 200 in a one-to-one correspondence. The outer wall of each threaded sleeve 300 is connected to fourteen spaced steel columns 310. The end of the threaded sleeve 300 away from the screw 200 is connected to an end cap 320. The end of the threaded sleeve 300 near the bottom cast-in-place template 100 is connected to a pressure ring 330 that presses against the top of the bottom sealing sponge strip 120.

[0028] The fastening assembly includes a pair of transverse timbers 400, three U-shaped clamping plates 410 with U-shaped cross sections, and three pairs of longitudinal timbers 420. The two transverse timbers 400 extend along the width direction of the bottom cast-in-place template 100 and clamp the two sides of the three screws 200. Each pair of longitudinal timbers 420 extends along the length direction of the bottom cast-in-place template 100 and is respectively located on both sides of a corresponding screw 200. The tops of the two transverse timbers 400 press against the bottoms of the three pairs of longitudinal timbers 420. Each screw 200 is fitted with a U-shaped clamping plate 410. The middle part of the U-shaped clamping plate 410 presses against the bottom of a pair of corresponding transverse timbers 400. The two ends of the U-shaped clamping plate 410 press against the opposite sides of the two transverse timbers 400. The screw 200 is connected to a nut 210 that presses against the bottom of the corresponding U-shaped clamping plate 410. The end of the nut 210 near the corresponding U-shaped clamping plate 410 is connected to a washer 220 fitted on the screw 200.

[0029] When using the pre-embedded anti-leakage formwork reinforcement device for the construction joint of a cast-in-place staircase provided in this embodiment, the bottom cast-in-place formwork 100 and the two side cast-in-place formworks 110 are respectively arranged in preset positions and connected to each other, so that the bottom sealing sponge strip 120 connected to the top of the bottom cast-in-place formwork 100 and the connecting hole 130 on the bottom cast-in-place formwork 100 are located below the construction joint of the cast-in-place staircase. Then, the nuts 210 and U-shaped clamps 410 are respectively sleeved on the corresponding screws 200, and each screw is tightened. Rods 200 pass through corresponding connecting holes 130 and bottom sealing sponge strips 120 from bottom to top. Threaded sleeves 300 are threaded onto the top of each screw rod 200, and the pressure rings 330 connected to the bottom of each threaded sleeve 300 press against the bottom sealing sponge strip 120 on the top surface of the bottom cast-in-place formwork 100. Then, end caps 320 are snapped and fixed to the ends of the threaded sleeves 300 away from the screw rods 200. The three pairs of longitudinal timbers 420 are then aligned along... The bottom cast-in-place formwork 100 extends along its length and is positioned on both sides of three corresponding screw rods 200. Two horizontal timbers 400 are placed on both sides of the three screw rods 200, with their tops pressing against the bottom of three pairs of longitudinal timbers 420. Each nut 210 is rotated to move upward along the axial direction of the screw rod 200 until the nut 210 presses the corresponding U-shaped clamp 410 against the bottom of the corresponding two horizontal timbers 400, thus completing the installation of the pre-embedded anti-leakage formwork reinforcement device for the construction joint of the cast-in-place staircase. At this point, a cast-in-place staircase can be cast between the bottom cast-in-place formwork 100 and the two side cast-in-place formworks 110. After construction is completed, each nut 210 is rotated in the opposite direction to stop pressing against the corresponding U-shaped clamp 410 and the horizontal timbers 400. The horizontal timbers 400 and the longitudinal timbers 420 are removed, and each screw rod 200 is rotated in the opposite direction to separate each screw rod 200 from the corresponding threaded sleeve 300 and the cast-in-place staircase, allowing for reuse.

[0030] The pre-embedded anti-leakage formwork reinforcement device for the construction joint of a cast-in-place staircase provided in this application embodiment uses a threaded sleeve 300 and a screw rod 200 to stably connect the bottom cast-in-place formwork 100 to the threaded sleeve 300 embedded in the cast-in-place staircase. The steel column 310 connected to the outer wall of the threaded sleeve 300 improves the tightness of the connection, thereby preventing unstable formwork installation. Two horizontal wooden blocks 400 are respectively set on both sides of each screw rod 200, and U-shaped clamping plates 410 are pressed against the bottom of the corresponding two horizontal wooden blocks 400 by nuts 210 threaded onto the screw rods 200 for fixation, thus ensuring... The screw 200 is stably connected to the bottom of the bottom cast-in-place formwork 100, which further improves the stability of the connection between the bottom cast-in-place formwork 100 and the cast-in-place staircase. At the same time, a bottom sealing sponge strip 120 located below the construction joint is connected to the top surface of the bottom cast-in-place formwork 100. On the adjacent side of the two side cast-in-place formworks 110, side sealing sponge strips 140 are respectively provided, which are connected to the bottom and both ends of the bottom sealing sponge strip 120. The bottom sealing sponge strip 120 is pressed against the top surface of the bottom cast-in-place formwork 100 by the pressure ring 330 at the bottom of the threaded sleeve 300 connected to each screw 200 to improve the sealing performance and avoid grout leakage during pouring.

[0031] The threaded sleeve 300 has an end cap 320 connected to the end away from the screw 200, which can prevent grout from entering the threaded sleeve 300 during pouring and connect the screw 200 and the threaded sleeve 300 into a whole. This makes it convenient for workers to separate the screw 200 and the threaded sleeve 300 after pouring and reuse them. The nut 210 has a washer 220 connected to the end near the corresponding U-shaped clamp 410, which is sleeved on the screw 200. This allows the nut 210 to use the washer 220 to stably press the U-shaped clamp 410 against the bottom of the two corresponding horizontal timbers 400.

[0032] In other alternative embodiments, each set of connection holes 130 may also include two or more connection holes 130 arranged at intervals along the width direction of the bottom cast-in-place formwork 100.

[0033] Example 2 like Figure 5 As shown, this application embodiment also provides a pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints, which is roughly the same in structure as the pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints provided in Embodiment 1. The difference is that in this embodiment, a fixing steel plate 500 and a connecting steel plate 600 are also included. The outer wall of each threaded sleeve 300 is connected to a detachable steel column 310 by threads. The fixing steel plate 500 is sleeved on three screws 200 that pass through three connecting holes 130. The connecting steel plate 600 is sleeved on the threaded sleeve 300 connected by the three screws 200. A rotating handwheel 230 is connected to the bottom of each screw 200.

[0034] Compared with the pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints provided in this application embodiment, the pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints provided in Embodiment 1 adds a fixing steel plate 500 and a connecting steel plate 600. After the pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints provided in Embodiment 1 is installed, the fixing steel plate 500 is further sleeved on the three screws 200 respectively, and before installing the threaded sleeve 300, the connecting steel plate 600 is pre-sleeved on the threaded sleeve 300 connected by the three screws 200. Thus, the fixing steel plate 500 and the connecting steel plate 600 are used to connect the three screws 200 and the three threaded sleeves 300 into a whole, thereby improving the overall structural strength and stability of the pre-embedded anti-leakage template reinforcement device for cast-in-place stair construction joints.

[0035] In addition, a rotating handwheel 230 is connected to the bottom of each screw 200, which allows construction workers to easily rotate the handwheel 230 to drive the screw 200 to rotate, reducing the labor intensity of construction workers and improving construction efficiency.

[0036] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs, characterized in that, It includes: A sealing assembly includes a bottom cast-in-place template, two side cast-in-place templates whose bottoms are respectively connected to both sides of the bottom cast-in-place template, and a bottom sealing sponge strip disposed on the top surface of the bottom cast-in-place template. The bottom cast-in-place template is provided with connecting holes spaced apart along the width direction. The bottom sealing sponge strip and the connecting holes are disposed below the construction joint of the cast-in-place staircase. Bolt assembly, including threaded rods that pass through each of the connecting holes and the bottom sealing sponge strip; The sleeve assembly includes threaded sleeves that are connected one-to-one to the top of each of the screws, and the outer wall of each threaded sleeve is connected to a plurality of steel columns; Fastening components are used to press and fix the bottom cast-in-place template to the bottom of each of the threaded sleeves.

2. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 1, characterized in that, The end of the threaded sleeve away from the screw is connected to an end cap, and the end of the threaded sleeve near the bottom cast-in-place template is connected to a pressure ring that presses against the bottom sealing sponge strip.

3. The pre-embedded anti-leakage formwork reinforcement device for cast-in-place stair construction joints according to claim 1, characterized in that, The fastening assembly includes multiple pairs of horizontal wooden blocks and multiple U-shaped clamping plates with a U-shaped cross-section. Each pair of horizontal wooden blocks is respectively disposed on both sides of each screw that passes through each of the connecting holes. Each screw is fitted with a U-shaped clamping plate, and the middle and both ends of the U-shaped clamping plate respectively press against the bottom and both sides of a pair of corresponding horizontal wooden blocks.

4. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 3, characterized in that, The fastening assembly also includes multiple pairs of longitudinal timbers, each pair of longitudinal timbers being disposed on both sides of multiple screws spaced apart along the length of the bottom cast-in-place template, and the top of each pair of transverse timbers pressing against the bottom of each pair of longitudinal timbers.

5. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 4, characterized in that, The screw is connected to a nut that presses against the bottom of the U-shaped plate. The end of the nut near the U-shaped plate is connected to a washer that is sleeved on the screw.

6. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 1, characterized in that, It also includes multiple fixing steel plates, each of which is fitted onto a screw that passes through a set of connecting holes.

7. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 1, characterized in that, It also includes multiple connecting steel plates, the steel columns being detachably connected to the threaded sleeves, each of the connecting steel plates being fitted onto the threaded sleeves connected to the respective screws passing through a set of the connecting holes.

8. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 1, characterized in that, Each of the two adjacent side cast-in-place formworks is provided with a side sealing sponge strip whose bottom is connected to both ends of the bottom sealing sponge strip.

9. The pre-embedded anti-leakage formwork reinforcement device for construction joints of cast-in-place stairs according to claim 1, characterized in that, A rotating handwheel is connected to the bottom of the screw.

10. A pre-embedded anti-leakage formwork reinforcement system for construction joints of cast-in-place stairs, characterized in that, It includes a pre-embedded anti-leakage formwork reinforcement device for the construction joint of a cast-in-place staircase as described in any one of claims 1 to 9.

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