An adjustable cast-in-place concrete staircase formwork system

Abstract

The utility model relates to the technical field of building construction equipment, and in particular to an adjustable cast-in-place concrete stair template system, comprising a rectangular frame, the rectangular frame comprising an inclined rectangular frame, an adjusting baffle being slidably connected inside the rectangular frame, the adjusting baffle dividing the rectangular frame into two independent spaces, a plurality of vertically arranged stair tread templates being arranged in the retractable film plate system, the stair tread templates passing through the adjusting baffle, the adjusting baffle and the stair tread templates being perpendicular to each other, a plurality of adjustable telescopes being fixedly connected to the adjusting baffle, the other end of the adjustable telescope being fixedly connected to the inner wall of the rectangular frame, the adjustable telescope being capable of telescopic adjustment, the movement of the adjusting baffle being controlled by the adjustable telescope and thus the width of the entire concrete stair template being adjustable, the design of the utility model being capable of directly moving upward for demoulding, the utility model being convenient to use, and simple to erect and dismantle.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to an adjustable cast-in-place concrete staircase formwork system. Background Art

[0002] In construction projects, stairs play a vital role as a necessary passage for people to go to each floor. During the construction of cast-in-place concrete stairs, due to the different sizes of stairs and the complex formwork erection process, a large number of formwork assembly, size adjustment, and disassembly processes not only waste manpower and material resources, but also seriously affect the construction efficiency and quality.

[0003] At present, the existing construction technology at construction sites is to cut, make and overlap wooden boards according to the size on site to form cast-in-place concrete stair formwork. However, there are still disadvantages such as multiple production of formworks due to different widths of stairs, disassembly and assembly after pouring and repeated overlap; wooden boards are easily crushed or deformed, and have a short lifespan; laying and folding are inconvenient and the turnover is low. In order to solve this traditional technical problem, it is urgent to develop a new type of cast-in-place concrete stair formwork system that can be adjusted for use. Utility Model Content

[0004] The utility model aims to provide an adjustable cast-in-place concrete staircase formwork system to solve the problems raised in the above-mentioned background technology.

[0005] An adjustable cast-in-place concrete stair formwork system comprises a rectangular frame, wherein the rectangular frame comprises an inclined rectangular frame, an adjusting baffle is slidably connected inside the rectangular frame, the adjusting baffle divides the rectangular frame into two independent spaces, a plurality of vertically arranged stair tread formworks are arranged in the rectangular frame, the stair tread formworks penetrate the adjusting baffle, the adjusting baffle and the stair tread formworks are perpendicular to each other, a plurality of adjustable expanders are fixedly connected to the adjusting baffle, the other end of the adjustable expander is fixedly connected to the inner wall of the rectangular frame, and the adjustable expander can be telescopically adjusted.

[0006] Preferably, the adjustable telescopic device includes a connecting sleeve in the middle, the connecting sleeve is provided with a through hole in the axial direction, two telescopic rods are slidably connected in the through hole, the end of the telescopic rod away from the connecting sleeve is fixedly connected to a fixed connecting end, the end of the fixed connecting end away from the telescopic rod is provided with a fixing portion, the fixed connecting end and the connecting sleeve are coaxial, the end of the telescopic rod close to the connecting sleeve is fixedly connected to a rack, the middle of the connecting sleeve is rotatably connected to a spline shaft along the vertical direction of the connecting sleeve, the two racks are meshed on both sides of the spline part of the spline shaft, the optical axis end of the spline shaft passes through the connecting sleeve, and the optical axis end of the spline shaft is fixedly connected to a patterned nut.

[0007] Furthermore, the fixing portion is provided with a plurality of fixing through holes, and fixing bolts are arranged in the fixing through holes.

[0008] Furthermore, a locking device is provided on the top of the connecting sleeve, and the locking device includes a rotating base, and a locking card is rotatably connected to the rotating base. When the locking card can be rotated and inserted into the gap of the patterned nut, the patterned nut can be relatively fixed.

[0009] Preferably, a plurality of groups of lifting rings are provided on both sides of the rectangular frame.

[0010] Furthermore, a high-strength rubber sleeve is provided on the surface of the lifting ring.

[0011] Preferably, the rectangular frame includes two rectangular side panels and two step side panels, the two ends of the stair tread template are fixed between the two step side panels, and the height of the connection between the step side panel and the stair tread template is greater than the height of the stair tread template.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts an adjustable telescopic device. When in use, the slotted nut is rotated to drive the spline shaft to rotate. The two telescopic rods are meshed on both sides of the spline shaft through the rack. Therefore, the rotation of the spline shaft drives the two telescopic rods to move closer or farther away, thereby changing the length of the adjustable telescopic device and realizing the adjustment function. The fixed connection ends fixedly connected on the two telescopic rods are respectively fixed on the inner sides of the adjustment baffle and the step side plate. The adjustable telescopic device can be extended by rotating the spline shaft, and then the adjustment baffle is pushed by the adjustable telescopic device, thereby changing the width of the staircase concrete chamber. The adjustable telescopic device is provided with a locking device located on the connecting sleeve. When the locking card is rotated to be stuck in the gap of the patterned nut, the patterned nut can be limited, so that the entire adjustable telescopic device is in a locked state, preventing the adjustment baffle from moving when pouring concrete, and reducing the dimensional accuracy of the cast stairs.

[0013] The device has a simple structure and is easy to operate. When in use, the staff only needs to rotate the slotted nut to achieve smooth and accurate adjustment of the width of the stair template. The operation method is simple, and dynamic control can be achieved by stopping and starting, thereby greatly reducing the labor intensity of the staff. When the device is finished, it can be quickly demoulded by lifting it upward through the lifting ring. The operation is convenient and quick, and the stair template does not need to be disassembled after one pouring. It can be transported to the subsequent construction site according to the needs of the site, and the rotating adjustment nut can be rotated again according to the size of the subsequent construction stairs to meet the needs of pouring again, reducing the repeated disassembly and installation of the stair template due to different stair widths, thereby improving its turnover efficiency and greatly reducing the template installation cost. In addition, the rectangular side panels, step side panels and adjustment baffles used in the device are all made of rigid materials, which can greatly improve the overall rigidity and flatness of the template, avoid the problems of mold expansion and mold shrinkage caused by the initial setting process of concrete, greatly improve the construction quality, and reduce the amount of wear during turnover, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a working schematic diagram of the adjustable telescopic device in the utility model;

[0016] 1. Rectangular frame; 11. Rectangular side panel; 12. Step side panel; 13. Adjustment baffle; 14. Stair tread template; 2. Adjustable telescope; 21. Connecting sleeve; 22. Telescopic rod; 221. Rack; 23. Spline shaft; 24. Slotted nut; 25. Fixed connection end; 26. Fixed part; 261. Fixing bolt; 27. Locking device; 271. Rotating base; 272. Locking card; 3. Lifting ring. DETAILED DESCRIPTION

[0017] The following will be combined with specific embodiments and attached Figure 1-2 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0018] An adjustable cast-in-place concrete staircase formwork system includes a rectangular frame 1, wherein the rectangular frame 1 includes an inclined rectangular frame 1, wherein the rectangular frame 1 is assembled from two rectangular side panels 11 and two step side panels 12, wherein the stair tread formwork 14 is in the shape of a step and can be used as a side formwork when the staircase is cast, wherein an adjustment baffle 13 is slidably connected inside the rectangular frame 1, wherein the adjustment baffle 13 is arranged parallel to the step side panel 12, and the adjustment baffle 13 is also in the shape of a step, and the adjustment baffle 13 divides the internal space of the rectangular frame 1 into two independent spaces, wherein one side is an adjustment space and the other side is a casting space, wherein the casting space is used to cast concrete to form a staircase platform after installation is completed The rectangular frame 1 is provided with a plurality of vertically arranged stair tread templates 14, and the two ends of the stair tread templates 14 are respectively fixedly connected to the two step side panels 12, and the stair tread templates 14 pass through the adjusting baffle 13 and have the same sliding direction as the adjusting baffle 13. The existence of the stair tread templates 14 will not interfere with the sliding of the adjusting baffle 13. The height of the connection between the step side panels 12 and the stair tread templates 14 is greater than the height of the stair tread templates 14. The pouring amount of concrete will be limited to the height of the stair tread templates 14. The stair tread templates 14 will form the concrete into the vertical surface of the stair steps, and the horizontal tread surface can be naturally formed without a template.

[0019] The adjusting baffle 13 is perpendicular to the stair tread template 14, and three adjustable telescopic devices 2 are fixedly connected to the adjusting baffle 13. The adjustable telescopic device 2 includes a connecting sleeve 21 in the middle, and the connecting sleeve 21 is provided with a through hole along the axial direction. Two telescopic rods 22 are slidably connected in the through hole. The two telescopic rods 22 can slide along the through hole. One end of the telescopic rod 22 located in the connecting sleeve 21 is a rack 221 structure. A spline shaft 23 is connected to the middle of the connecting sleeve 21 in a vertical direction, that is, a vertical direction of rotation of the connecting sleeve 21. The spline part of the spline shaft 23 is located inside the connecting sleeve 21, and the racks 221 are meshed on both sides of the spline part. One each, by rotating the spline shaft 23, the two racks 221 can slide toward each other to achieve the telescopic function. The end of the telescopic rod 22 away from the connecting sleeve 21 is fixedly connected to a fixed connecting end 25, and the end of the fixed connecting end 25 away from the telescopic rod 22 is provided with a fixing portion 26, and the fixing portion 26 is provided with a plurality of fixing through holes, and the fixing through holes are provided with fixing bolts 261. The fixing portion 26 can be fixedly connected to the adjusting baffle 13 or the step side plate 12 by using the fixing bolts 261, so that the adjustable telescopic device 2 can control the displacement of the adjusting baffle 13 relative to the step side plate 12, thereby realizing the adjustment of the casting space width, and then controlling the width of the concrete stairs.

[0020] The optical axis end of the spline shaft 23 passes through the connecting sleeve 21, and the optical axis end of the spline shaft 23 is fixedly connected with a slotted nut 24, and the slotted nut 24 is provided with a pattern in the vertical direction. A locking device 27 is provided on the top of the connecting sleeve 21, and the locking device 27 includes a rotating base 271, and the rotating base 271 is fixed to one side of the spline shaft 23. A locking card 272 is rotatably connected to the rotating base 271, and the locking card 272 is rotatably connected along the vertical direction. The locking card 272 can be rotatably inserted into the gap of the slotted nut 24 to relatively fix the slotted nut 24, thereby playing a locking role. The slotted nut 24 cannot rotate, so that the spline shaft 23 fixedly connected to the slotted nut 24 is relatively fixed, and the two telescopic rods 22 meshing with the spline shaft 23 are further fixed, thereby realizing the fixation of the adjusting baffle 13, preventing the adjusting baffle 13 from moving during concrete pouring, affecting the accuracy of the shape.

[0021] Four sets of lifting rings 3 are provided on both sides of the rectangular frame 1 for lifting and demoulding after the concrete is solidified. The device is reasonable in design. It only needs to be lifted upward without interfering with the solidified concrete. The demoulding and installation are convenient. The surface of the lifting ring 3 is provided with a high-strength rubber sleeve to ensure stability during the lifting process and effectively avoid slipping.

[0022] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0023] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0024] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An adjustable cast-in-place concrete staircase formwork system, characterized in that: It includes a rectangular frame, which includes an inclined rectangular frame, an adjusting baffle is slidably connected inside the rectangular frame, and the adjusting baffle divides the rectangular frame into two independent spaces. A plurality of vertically arranged stair tread templates are provided in the rectangular frame, and the stair tread templates pass through the adjusting baffle. The adjusting baffle and the stair tread templates are perpendicular to each other, and a plurality of adjustable telescopes are fixedly connected to the adjusting baffle, and the other end of the adjustable telescope is fixedly connected to the inner wall of the rectangular frame, and the adjustable telescope can be telescopically adjusted.

2. The adjustable cast-in-place concrete staircase formwork system according to claim 1, characterized in that: The adjustable telescopic device includes a connecting sleeve in the middle, the connecting sleeve is provided with a through hole in the axial direction, two telescopic rods are slidably connected in the through hole, the ends of the telescopic rods away from the connecting sleeve are fixedly connected with a fixed connecting end, the end of the fixed connecting end away from the telescopic rod is provided with a fixing portion, the fixed connecting end and the connecting sleeve are coaxial, the end of the telescopic rod close to the connecting sleeve is fixedly connected with a rack, the middle of the connecting sleeve is rotatably connected to a spline shaft in the vertical direction of the connecting sleeve, the two racks are meshed on both sides of the spline part of the spline shaft, the optical axis end of the spline shaft passes through the connecting sleeve, and the optical axis end of the spline shaft is fixedly connected with a patterned nut.

3. The adjustable cast-in-place concrete staircase formwork system according to claim 2, characterized in that: The fixing portion is provided with a plurality of fixing through holes, and fixing bolts are arranged in the fixing through holes.

4. The adjustable cast-in-place concrete staircase formwork system according to claim 2, characterized in that: A locking device is provided on the top of the connecting sleeve, and the locking device includes a rotating base. A locking card is rotatably connected to the rotating base, and the locking card can be rotated and inserted into the gap of the patterned nut to relatively fix the patterned nut.

5. The adjustable cast-in-place concrete staircase formwork system according to claim 1, characterized in that: A plurality of groups of lifting rings are arranged on both sides of the rectangular frame.

6. The adjustable cast-in-place concrete staircase formwork system according to claim 5, characterized in that: A high-strength rubber sleeve is arranged on the surface of the lifting ring.

7. The adjustable cast-in-place concrete staircase formwork system according to claim 1, characterized in that: The rectangular frame includes two rectangular side panels and two step side panels, the two ends of the stair tread template are fixed between the two step side panels, and the height of the connection between the step side panel and the stair tread template is greater than the height of the stair tread template.

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