Stair formwork erecting device

Abstract

The utility model discloses a stair formwork erecting device, include: bottom panel, two adjusting column set in bottom panel top, and the both ends of adjusting column are connected with stair upper end and lower end respectively, a plurality of step units set in adjusting column, be equipped with a plurality of adjusting unit on this adjusting column, and a plurality of adjusting units are set between a plurality of adjacent step units respectively, through the rotation adjusting column, make the length of adjusting unit change, to promote the size change of the interval between adjacent step units. The utility model discloses simple structure, through setting a plurality of step units on adjusting column, can adapt to the stair of different length, and set adjusting unit between a plurality of step units, by the cooperation of adjusting unit, step unit and adjusting column, thereby change the width adjustment between step unit, also changed its height distribution in the direction of inclination simultaneously, thereby realize the simultaneous regulation of step unit width and height.

Description

Technical Field

[0001] This utility model relates to the field of staircase casting technology, specifically a staircase formwork support device. Background Technology

[0002] In traditional cast-in-place staircase construction, on-site assembly of wooden formwork is commonly used. This method typically relies on manual labor to measure, cut, and nail the wooden planks based on experience. This is not only cumbersome and inefficient, but also labor-intensive, severely impacting construction progress. Furthermore, the lack of standardized specifications and precise adjustment devices results in poor control over the height and width of the steps, easily leading to dimensional deviations. This results in uneven steps and misaligned dimensions in the finished staircase, causing rework and increasing construction costs. Additionally, traditional wooden formwork is prone to deformation, cracking, or damage after multiple uses, resulting in low reuse rates, material waste, and hindering the development of green construction trends. Therefore, a staircase formwork support device is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a staircase formwork support device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a staircase formwork support device, comprising:

[0005] Bottom panel;

[0006] Two adjustable columns are installed above the bottom panel, with their two ends connected to the upper and lower ends of the staircase, respectively.

[0007] Several step units are set on an adjustment column. The adjustment column is equipped with several adjustment units, and the adjustment units are respectively set between several adjacent step units. By rotating the adjustment column, the length of the adjustment units is changed, thereby changing the distance between adjacent step units.

[0008] As a further embodiment of this utility model: the outer circumferential surface of the adjusting column is movably fitted with an internal threaded sleeve, and the outer circumferential surface of the adjusting column is fixedly fitted with an external threaded sleeve. The internal threaded sleeve and the external threaded sleeve are threadedly connected, and the internal threaded sleeve, the external threaded sleeve and the pedal unit are all rotatably connected.

[0009] As a further embodiment of this utility model: a plurality of brackets are installed on the lower surface of the bottom panel, and telescopic support rods are installed on the brackets.

[0010] As a further embodiment of this utility model: the step unit includes a first baffle and a second baffle, the second baffle is disposed on the lower surface of the first baffle, and rotating rods are installed on both sides of the first baffle. The ends of the rotating rods away from the first baffle are rotatably connected to movable sleeves sleeved on the outer circumference of the adjusting column.

[0011] As a further embodiment of this utility model: the number of step units is multiple, wherein the position between the bottommost step unit and the adjusting column is fixed, and the remaining step units are movably connected to the adjusting column, and the multiple step units are connected to each other through a synchronization unit.

[0012] As a further embodiment of this utility model: the synchronization unit includes two synchronization plates, and the lower surface of each synchronization plate is equipped with the same number of connecting rods as the step unit. The ends of the multiple connecting rods away from the synchronization plates are equipped with connecting blocks connected to the second baffle. The two synchronization plates are connected by a crossbeam. A base is installed on the first baffle. A threaded rod is rotatably connected to the upper surface of the base. The end of the threaded rod is threadedly connected to the synchronization plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This application adapts to stairs of different lengths by setting several step units on the adjusting column, and adjusting units are set between the step units. The coordinated operation of the adjusting units, step units and adjusting column changes the width between the step units and also changes their height distribution in the inclined direction, thereby realizing the simultaneous adjustment of the width and height of the step units.

[0015] In addition, by setting up a synchronization unit, the height of the crossbeam is adjusted by rotating the threaded rod. When the crossbeam rises and falls, it drives the two synchronization plates to move synchronously. The synchronization plates drive the second baffle to adjust its height through multiple connecting rods and connecting blocks, thereby adapting to the overall size changes of the staircase. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the stair formwork support device of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the stair formwork support device of this utility model.

[0018] Figure 3 This is a top view of the stair formwork support device of this utility model.

[0019] Figure 4 This is a schematic diagram of the adjustment unit of this utility model;

[0020] Figure 5This is a schematic diagram of the staircase forming according to the present invention;

[0021] In the diagram: 1. Bottom panel; 2. Bracket; 3. Telescopic support rod; 4. Inclined beam side plate; 5. Adjusting column; 6. Pedal unit; 61. First baffle; 62. Second baffle; 63. Rotating rod; 64. Movable sleeve; 7. Adjusting unit; 71. Internal threaded sleeve; 72. External threaded sleeve; 8. Synchronization unit; 81. Synchronization plate; 82. Connecting rod; 83. Connecting block; 84. Crossbeam; 85. Base; 86. Threaded rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 In this embodiment of the utility model, a stair formwork support device includes:

[0024] Bottom panel 1;

[0025] Two adjusting columns 5 are installed above the bottom panel 1, and the two ends of the adjusting columns 5 are connected to the upper and lower ends of the stairs respectively;

[0026] Several step units 6 are set on an adjusting column 5. The adjusting column 5 is provided with several adjusting units 7, and the several adjusting units 7 are respectively set between several adjacent step units 6. By rotating the adjusting column 5, the length of the adjusting unit 7 is changed, thereby changing the distance between adjacent step units 6.

[0027] Specifically, the bottom panel 1, adjusting column 5, step unit 6, adjusting unit 7, and synchronization unit 8 are all made of aluminum material, which facilitates disassembly and reuse after the staircase is poured. The upper surface of the bottom panel 1 is provided with two inclined beam side plates 4, which together form the initial frame for the concrete pouring of the staircase. There are two adjusting columns 5, and their inclination angle is consistent with the inclination angle of the bottom panel 1 and the inclined beam side plates 4. Once the inclination angles of the three are determined, the length of the adjusting unit 7 on it can be changed by rotating the adjusting column 5.

[0028] Since the adjustment unit 7 is connected to the adjacent step unit 6, the change in the length of the adjustment unit 7 will cause the adjacent step unit 6 to be relatively displaced along the axial direction of the adjustment column 5, thereby changing the spacing between the step units 6. This change in spacing not only realizes the adjustment of the width of the step unit 6, but also changes its height distribution in the tilt direction, thereby realizing the simultaneous adjustment of the width and height of the step unit 6.

[0029] There are multiple step units 6. The position of the bottommost step unit 6 between itself and the adjusting column 5 is fixed and remains unchanged. The remaining step units 6 are movably connected to the adjusting column 5 and can move along the axis of the adjusting column. The multiple step units 6 are interconnected through a synchronization unit 8 to achieve linkage adjustment between each step.

[0030] Please see Figure 4 In one embodiment, preferably, the adjustment unit 7 includes an internally threaded sleeve 71 movably sleeved on the outer peripheral surface of the adjustment column 5, and an externally threaded sleeve 72 fixedly sleeved on the outer peripheral surface of the adjustment column 5. The internally threaded sleeve 71 and the externally threaded sleeve 72 are threadedly connected, and the internally threaded sleeve 71 is connected to the pedal unit 6.

[0031] Specifically, a limiting groove (not shown in the figure) is provided on the outer circumferential surface of the adjusting column 5 along its length direction, and a limiting strip adapted to the limiting groove is provided on the inner circumferential surface of the external threaded sleeve 72. The two are installed in a sliding fit. This structure ensures that the external threaded sleeve 72 can rotate synchronously with the adjusting column 5, while having a certain degree of sliding freedom in the axial direction.

[0032] When adjusting the width and height of the step unit 6, rotating the adjusting column 5 causes the external threaded sleeve 72 to rotate as well. Since the internal threaded sleeve 71 is restricted from rotating by the step unit 6, it can only move along the axial direction of the adjusting column 5. Under the action of the threaded transmission, the internal threaded sleeve 71 will generate a corresponding axial displacement. The internal threaded sleeve 71 in each adjusting unit 7 drives the pedal unit 6 connected to it to undergo lateral (i.e., axial displacement of the adjusting column 5). Multiple pedal units 6 are pushed or pulled by the adjusting unit 7 in sequence, thereby realizing the synchronous adjustment of the overall width.

[0033] It is worth noting that the bottom pedal unit 6 is fixedly connected to the adjusting column 5, and its position remains unchanged; the remaining pedal units 6 expand outward or retract inward according to the rotation direction of the adjusting column 5, thereby changing the spacing between adjacent pedal units 6 and thus realizing the adjustment of the width of the pedal unit 6; since the pedal units 6 are distributed along the adjusting column 5 with a certain tilt angle, the height of the pedal in the vertical direction will also change when the width changes, thus realizing the synchronous adjustment of the width and height of the pedal unit 6.

[0034] Please see Figure 2 In one embodiment, preferably, a plurality of brackets 2 are mounted on the lower surface of the bottom panel 1, and telescopic support rods 3 are mounted on the brackets.

[0035] Specifically, the bracket 2 includes an upper bracket connected to the bottom panel 1 and a lower bracket connected to the telescopic support rod 3. The upper and lower brackets are connected by a pivot, which provides better support for the bottom panel 1 when it is tilted at different angles. The telescopic support rod 3 is marked with graduations, and its length can be extended according to the height of the stairs to ensure that it can adapt to stairs of different heights. After the height of the telescopic support rod 3 is adjusted, its height can be locked by rotating the nut on the telescopic support rod 3. The principle is similar to the telescopic principle of a telescopic clothes drying rod, which is existing technology and will not be elaborated on here.

[0036] Please see Figure 1 In one embodiment, preferably, the step unit 6 includes a first baffle 61 and a second baffle 62. The second baffle 62 is disposed on the lower surface of the first baffle 61. Rotating rods 63 are installed on both sides of the first baffle 61. The ends of the rotating rods 63 away from the first baffle 61 are rotatably connected to movable sleeves 64 sleeved on the outer periphery of the adjusting column 5.

[0037] Specifically, the first baffle 61 and the second baffle 62 are slidably fitted together. The second baffle 62 can extend into the interior of the first baffle 61. The first baffle 61 is connected to the movable sleeve 64 through the rotating rod 63. The rotating rod 63 and the first baffle 61 are rotatably connected. This structural design ensures that the first baffle 61 always remains vertical, regardless of the tilt angle of the movable sleeve 64.

[0038] Please see Figure 1 In one embodiment, preferably, the synchronization unit 8 includes two synchronization plates 81, and the lower surfaces of the two synchronization plates 81 are each equipped with the same number of connecting rods 82 as the step unit 6. The ends of the multiple connecting rods 82 away from the synchronization plates 81 are each equipped with connecting blocks 83 connected to the second baffle 62. The two synchronization plates 81 are connected by a crossbeam 84. A base 85 is installed on the first baffle 61, and a threaded rod 86 is rotatably connected to the upper surface of the base 85. The end of the threaded rod 86 is threadedly connected to the synchronization plate 81.

[0039] Specifically, two synchronous plates 81 are set, and a vertically downward connecting rod 82 is set on their lower surface. The connecting rod 82 is rotatably connected to the synchronous plate 81, ensuring that the connecting rod 82 remains vertical when the synchronous plate 81 tilts. The connecting rod 82 is connected to the second baffle 62 through the connecting block 83, which connects multiple second baffles 62 together to achieve synchronous lifting. The end of the connecting rod 82 is fixed with a nut after passing through the connecting block 83, thus achieving a tight connection between the connecting rod 82 and the connecting block 83. The crossbeam 84 is set to establish a connection between the two synchronous plates 81, so that the two synchronous plates 81 The system can synchronize during ascent or descent. The base 85 provides stable support for the threaded rod 86 and ensures its smooth rotation. As the threaded rod 86 rotates, it drives the threaded beam 85 to rise or fall. When the beam 85 moves, it drives the synchronous plate 81 to move, which is transmitted to the second baffle 62 through the connecting rod 82 and connecting block 83. At this time, the height of the second baffle 62 will also change, thus achieving the effect of synchronously adjusting the height of the step unit 6. A handle can be installed at the end of the threaded rod 86 away from the base 85, so that the staff can adjust the height of the step unit 6 in real time by rotating the handle on site.

[0040] The working principle and usage process of this utility model are as follows: First, the inclination angle of the bottom panel 1 is determined according to the design height and inclination angle of the staircase. Then, a combination structure of multiple brackets 2 and telescopic support rods 3 is installed on the lower surface of the bottom panel 1, and the other end of the telescopic support rods 3 is fixed to the ground. Since the length of the telescopic support rods 3 can be adjusted according to the change of the inclination angle, it can ensure that it provides stable support for the bottom panel 1. At the same time, the design of the brackets 2 can adapt to the connection requirements under different inclination angles, ensuring good connection stability between the telescopic support rods 3 and the bottom panel 1.

[0041] Next, based on the actual length of the staircase, a corresponding number of step units 6 and adjustment units 7 are sequentially installed on the adjustment column 5. After assembly, the adjustment column 5 is rotated, causing the external threaded sleeve 72 on it to rotate synchronously. At this time, the movable sleeve 64 cannot rotate due to the limiting effect of the rotating rod 63 and the first baffle 61, and can only move axially along the adjustment column 5. The movable sleeve 64 is connected to the internal threaded sleeve 71, and the internal threaded sleeve 71 forms a threaded fit with the external threaded sleeve 72. Therefore, when the external threaded sleeve 72 rotates, the internal threaded sleeve 71 causes the movable sleeve 64 to generate axial displacement. This displacement causes the spacing between adjacent step units 6 to change, thereby realizing the adjustment of the step width. At the same time, since the adjustment column 5 has a certain tilt angle, the height of the step unit 6 in the vertical direction changes along with the width, realizing the synchronous adjustment of the width and height of the step unit 6.

[0042] If the height of step unit 6 still cannot meet the design requirements, the height of crossbeam 84 can be adjusted by rotating threaded rod 86. When crossbeam 84 rises and falls, it drives two synchronous plates 81 to move synchronously. Synchronous plates 81 drive the second baffle 62 to adjust its height through multiple connecting rods 82 and connecting blocks 83, thereby adapting to the overall size changes of the staircase.

[0043] Finally, after the above adjustments are completed, concrete is poured. Since the concrete does not come into direct contact with the adjustment unit 7 and the synchronization unit 8, the entire device can be dismantled and reused after the concrete has solidified.

[0044] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A staircase formwork support device, characterized in that, include: Bottom panel; Two adjustable columns are installed above the bottom panel, with their two ends connected to the upper and lower ends of the staircase, respectively. Several step units are set on an adjustment column. The adjustment column is equipped with several adjustment units, and the adjustment units are respectively set between several adjacent step units. By rotating the adjustment column, the length of the adjustment units is changed, thereby changing the distance between adjacent step units.

2. The staircase formwork support device according to claim 1, characterized in that, The outer circumferential surface of the adjusting column is movably fitted with an internally threaded sleeve, and the outer circumferential surface of the adjusting column is fixedly fitted with an externally threaded sleeve. The internally threaded sleeve and the externally threaded sleeve are threadedly connected, and the internally threaded sleeve, the externally threaded sleeve and the pedal unit are all rotatably connected.

3. The staircase formwork support device according to claim 1, characterized in that, Several brackets are installed on the lower surface of the bottom panel, and telescopic support rods are installed on the brackets.

4. The staircase formwork support device according to claim 1, characterized in that, The step unit includes a first baffle and a second baffle. The second baffle is disposed on the lower surface of the first baffle. Rotating rods are installed on both sides of the first baffle. The ends of the rotating rods away from the first baffle are rotatably connected to movable sleeves fitted on the outer circumference of the adjusting column.

5. The stair formwork support device according to claim 4, characterized in that, The number of step units is multiple, with the position of the bottommost step unit fixed between it and the adjusting column, and the remaining step units being movably connected to the adjusting column. The multiple step units are connected to each other through a synchronization unit.

6. The staircase formwork support device according to claim 5, characterized in that, The synchronization unit includes two synchronization plates, and the lower surface of each synchronization plate is equipped with the same number of connecting rods as the step unit. The ends of the connecting rods away from the synchronization plates are equipped with connecting blocks connected to the second baffle. The two synchronization plates are connected by a crossbeam. A base is installed on the first baffle, and a threaded rod is rotatably connected to the upper surface of the base. The end of the threaded rod is threadedly connected to the synchronization plate.

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