A formwork steel bar limiting device

Abstract

The utility model relates to the field of slip form construction technology provides a kind of slip form construction reinforcing bar limiting device, applied in slip form main body, including longitudinal limiting mechanism, transverse limiting mechanism and circumferential limiting mechanism;The longitudinal limiting mechanism is set in lifting frame, including inner layer annular reinforcement and outer layer annular reinforcement, in the inner layer annular reinforcement and outer layer annular reinforcement, the position corresponding vertical reinforcement is oppositely provided with the vertical reinforcement position limiting card for limiting;The transverse limiting mechanism is set in pouring bin, including multiple posts and multiple support bars being set along radial, the horizontal ring muscle is set on support bar, and the transverse height of horizontal ring muscle is limited;The circumferential limiting mechanism is oppositely set in the both sides of construction platform along radial, and the circumferential limiting mechanism part is immersed in the side wall of horizontal ring muscle in the flow state concrete in pouring bin and is in contact, and the radial distance of horizontal ring muscle is limited.

Description

Technical Field

[0001] This utility model relates to the field of slipform construction technology, and in particular to a rebar limiting device for slipform construction. Background Technology

[0002] In slipform construction, the positioning and fixing of vertical and horizontal reinforcing bars, as well as the control of the thickness of the concrete cover, are key aspects of construction quality control. The concrete cover is the portion of concrete that protects the reinforcing bars from direct exposure; it is the minimum distance between the concrete surface and the outermost edge of the outermost reinforcing bar (the load-bearing reinforcement) in a concrete member.

[0003] Existing technologies typically use concrete spacers, clamps, or plastic retaining clips to limit the position of reinforcing bars. These methods are low-cost and easy to operate. However, concrete spacers must be of the same grade as the concrete in the structural member, but they are prone to displacement and crushing, especially in thin-walled structures where they have poor compatibility. Plastic retaining clips are prone to deformation and aging under high-frequency vibration or high temperatures, affecting positioning accuracy and structural strength. Special components such as annular silo walls and irregularly shaped plates lack dedicated limiting devices, and existing technologies cannot accurately control the arrangement of curved horizontal ring reinforcement bars, which can easily lead to uneven protective layers due to displacement of the horizontal ring reinforcement bars. Utility Model Content

[0004] To address the problems of poor rebar positioning performance and uneven protective layer thickness in existing technologies, this utility model provides a rebar limiting device for slipform construction, applied in the slipform body. The slipform body includes a construction platform, a lifting frame erected on the construction platform, and inner and outer formwork set in the construction platform. The inner and outer formwork constitute a pouring chamber, which contains staggered vertical rebars and horizontal ring rebars. The device includes a longitudinal limiting mechanism, a transverse limiting mechanism, and a circumferential limiting mechanism. The longitudinal limiting mechanism is configured with... The lifting frame includes an inner layer of circumferential reinforcing bars and an outer layer of circumferential reinforcing bars. The inner and outer circumferential reinforcing bars are respectively equipped with positioning clips to limit the position of the vertical reinforcing bars. A lateral positioning mechanism is installed in the pouring chamber and includes multiple columns and multiple support rods arranged radially. The horizontal circumferential reinforcing bars are mounted on the support rods. A circumferential positioning mechanism is arranged radially opposite to each other on both sides of the construction platform. Part of the circumferential positioning mechanism is submerged in the flowing concrete within the pouring chamber and abuts against the sidewalls of the horizontal circumferential reinforcing bars.

[0005] Specifically, the inner circumferential reinforcing bars and the outer circumferential reinforcing bars are connected by multiple arc-shaped reinforcing bars through an ohmlock. The inner and outer ohmlocks are located in the same central angle direction, and their openings are opposite to each other.

[0006] Specifically, the lateral limiting mechanism is located between the protruding openings of the inner and outer ohms.

[0007] Specifically, the lateral limiting mechanism includes two vertically arranged columns and multiple horizontally arranged support rods at equal intervals along the radial direction, and its shape is ladder-like.

[0008] Specifically, connecting bars are provided between the horizontal ring bars and the vertical bars located in the same central angle direction. The two ends of the connecting bars are bent to form connecting hooks, and their ends are hooked to the intersection of the vertical bars and horizontal ring bars that intersect in the inner and outer layers, respectively.

[0009] Specifically, the circumferential limiting mechanism includes a fixing part, a guide part, and a limiting part arranged in sequence. The fixing part is fixedly installed in the construction platform. The guide part is arc-shaped, with its two ends connected to the fixing part and the limiting part, respectively. The limiting part is located at the bottom of the guide part and abuts against the side wall of the horizontal ring reinforcement.

[0010] Specifically, the circumferential limiting mechanism is made of U-shaped ribs, with the opening of the U-shaped ribs facing downwards.

[0011] Specifically, the distance between the fixing part and the limiting part is twice the thickness of the protective layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model is equipped with a horizontal positioning mechanism, a longitudinal positioning mechanism and a circumferential positioning mechanism in the main construction body, which respectively restrict the position of the vertical reinforcement in the vertical direction, the height of the horizontal ring reinforcement in the horizontal direction and the distance between the horizontal ring reinforcement and the concrete surface, so as to avoid the reinforcement displacement caused by human operation error, which would affect the structural strength or durability.

[0014] 2. The lateral positioning mechanism has a simple structure and can be mass-produced. The longitudinal and circumferential positioning mechanisms are fixed on the main construction body and can be reused up to the silo wall. It can quickly and conveniently position the reinforcing bars without the need for additional concrete pads, clamps, or plastic limiters to limit the reinforcing bars. It is low in cost and easy to operate. It can also ensure a stable connection under the high-frequency vibration of concrete pouring. It is not easy for the reinforcing bars to shift or become exposed due to deformation. It can effectively ensure that the concrete structural components meet the requirements of durability and effective anchorage of the stressed reinforcing bars. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model in the first direction;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model from a second direction;

[0017] Figure 3 This is a schematic diagram of the connecting ribs of this utility model;

[0018] Figure 4This is a schematic diagram of the circumferential limiting mechanism of this utility model.

[0019] Attached reference numerals: 11. Construction platform; 12. Lifting frame; 13. Inner formwork; 14. Outer formwork; 2. Longitudinal limiting mechanism; 21. Inner circumferential reinforcement; 22. Outer circumferential reinforcement; 23. Omca; 24. Limiting clip; 3. Lateral limiting mechanism; 31. Column; 32. Support rod; 4. Circumferential limiting mechanism; 41. Fixing part; 42. Guide part; 43. Limiting part; 5. Vertical reinforcement; 6. Horizontal circumferential reinforcement; 7. Connecting reinforcement. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0022] As shown in the figure, this utility model provides a rebar limiting device for slipform construction, including a transverse limiting mechanism 3, a longitudinal limiting mechanism 2, and a circumferential limiting mechanism 4. The longitudinal limiting mechanism 2 and the circumferential limiting mechanism 4 are set on the slipform construction body, and the transverse limiting mechanism 3 is set in the pouring chamber between the inner formwork 13 and the outer formwork 14. The rebar limiting device limits the rebar to ensure that the spacing, row spacing, and protective layer thickness of the rebar in the annular wall of the silo meet the design requirements, and avoids the rebar displacement caused by human operation error, which would affect the structural strength or durability.

[0023] The slipform construction system includes a construction platform 11, a lifting frame 12 set on the construction platform 11, an inner formwork 13 and an outer formwork 14 set at the bottom of the construction platform 11. Multiple vertical reinforcing bars 5 and horizontal circumferential reinforcing bars 6 are installed in the pouring chamber to support the concrete pouring. Concrete is poured between the inner formwork 13 and the outer formwork 14.

[0024] The longitudinal limiting mechanism 2 is mounted on the lifting frame 12 and moves with the sliding formwork body. It includes an inner circumferential reinforcing bar 21 and an outer circumferential reinforcing bar 22, the curvature of which matches the curvature of the formwork wall. Limiting clips 24 are respectively positioned opposite the inner circumferential reinforcing bar 21 and the outer circumferential reinforcing bar 22 at the corresponding positions of the vertical reinforcing bars 5. The vertical reinforcing bars 5 pass through the limiting clips 24. The limiting clips 24 limit the vertical position of the vertical reinforcing bars 5 to prevent them from tipping over.

[0025] Both the inner circumferential reinforcing bar 21 and the outer circumferential reinforcing bar 22 are composed of multiple segments of curved reinforcing bars connected by ohm-shaped reinforcing bars 23. The straight segments at both ends of the ohm-shaped reinforcing bars 23 are welded to the ends of the curved reinforcing bars respectively. In the circumferential direction, the inner ohm-shaped reinforcing bars 23 and the outer ohm-shaped reinforcing bars 22 are located in the same central angle direction, and their openings are opposite to each other.

[0026] The lateral limiting mechanism 3 is located between the protruding openings of the inner and outer ohmca 23 layers. The lateral limiting mechanism 3 is evenly spaced and can replace the corresponding vertical reinforcing bars 5. Its shape is ladder-like, including two vertically arranged columns 31 and multiple horizontally arranged support rods 32 at equal radial intervals. The lateral limiting mechanism 3 is embedded in the poured concrete. The horizontal ring reinforcement 6 is placed on the support rods 32 and fixed by welding. The support rods 32 provide support for the horizontal reinforcement, ensuring the consistency of the height of the horizontal ring reinforcement 6.

[0027] A connecting bar 7 is provided between the horizontal ring reinforcement 6 and the vertical reinforcement 5 located in the same central angle direction. The two ends of the connecting bar 7 are bent to form connecting hooks, which are in the shape of "∫". The ends of the connecting bars 7 are hooked to the intersection points of the vertical reinforcement 5 and the horizontal ring reinforcement 6 in the inner and outer layers, respectively, connecting and fixing the horizontal ring reinforcement 6 and the vertical reinforcement 5. The two ends of the connecting bar 7 are bent by equipment and connected to the intersection points of the vertical reinforcement 5 and the horizontal ring reinforcement 6, radially fixing the vertical reinforcement 5 and the horizontal ring reinforcement 6, which significantly improves the connection strength.

[0028] The circumferential limiting mechanism 4 is radially arranged on both sides of the construction platform 11, moving with the slipform body. It is made of U-shaped ribs with the opening direction of the U-shaped ribs facing downwards, and includes a fixing part 41, a guiding part 42, and a limiting part 43. The circumferential limiting mechanism 4 is used to limit the distance between the horizontal ring reinforcement 6 and the concrete surface. The thickness of the protective layer is determined in advance through mechanical constraint. The width of the circumferential limiting mechanism 4 (the distance between the fixing part and the limiting part) is preferably twice the thickness of the protective layer to ensure that the thickness of the concrete protective layer meets the requirements.

[0029] The lower end of the fixing part 41 is fixedly installed in the construction platform 11. The guide part 42 is arc-shaped, with its two ends connected to the fixing part 41 and the limiting part 43 respectively. The limiting part 43 is located at the bottom of the guide part 42 and is at least partially submerged in the flowing concrete. The limiting part 43 abuts against the side wall of the horizontal ring reinforcement 6. When the slipform body rises, the horizontal ring reinforcement 6 moves inward under the compression of the guide part 42. As the slipform body rises, the limiting part 43 abuts against the horizontal ring reinforcement 6 and compresses the horizontal ring reinforcement 6 inward, so that the horizontal ring reinforcement 6 maintains a certain distance from the outer wall of the concrete. The connecting bar 7 connects the inner and outer layers of steel bars with high strength. When the circumferential limiting mechanism 4 is lifted, the vertical steel bar 5 and the horizontal ring reinforcement 6 are ensured not to shift their positions by the tension of the connecting bar 7.

[0030] This utility model uses a transverse limiting mechanism 3, a longitudinal limiting mechanism 2, and a circumferential limiting mechanism 4 to limit the vertical reinforcing bars 5 and the horizontal ring bars 6. Compared with the existing technology that uses precast concrete pads or plastic limiting clips to limit the horizontal ring bars 6, it is low in cost and easy to operate. It can also ensure a stable connection under the high-frequency vibration of concrete pouring, and is not prone to reinforcing bar displacement or exposure due to deformation. It can effectively ensure that the concrete structural components meet the requirements of durability and effective anchorage of the stressed reinforcing bars.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A reinforcing bar limiting device for slipform construction, applied in a slipform body, the slipform body comprising a construction platform (11), a lifting frame (12) erected on the construction platform (11), and an inner formwork (13) and an outer formwork (14) set in the construction platform (11), the inner formwork (13) and the outer formwork (14) forming a pouring chamber, the pouring chamber being provided with staggered vertical reinforcing bars (5) and horizontal ring reinforcing bars (6), characterized in that, The system includes a longitudinal limiting mechanism (2), a transverse limiting mechanism (3), and a circumferential limiting mechanism (4). The longitudinal limiting mechanism (2) is installed in the lifting frame (12) and includes an inner circumferential reinforcing bar (21) and an outer circumferential reinforcing bar (22). The inner circumferential reinforcing bar (21) and the outer circumferential reinforcing bar (22) are respectively provided with a limiting card (24) for limiting the position of the vertical reinforcing bar (5). The transverse limiting mechanism (3) is installed in the pouring chamber and includes multiple columns (31) and multiple support rods (32) arranged radially. The horizontal ring reinforcing bar (6) is installed on the support rod (32). The circumferential limiting mechanism (4) is arranged radially on both sides of the construction platform (11). The circumferential limiting mechanism (4) is partially submerged in the flowing concrete in the pouring chamber and abuts against the side wall of the horizontal ring reinforcing bar (6).

2. The slipform construction rebar limiting device according to claim 1, characterized in that, The inner circumferential reinforcing bar (21) and the outer circumferential reinforcing bar (22) are connected by multiple arc-shaped reinforcing bars through ohm-shaped bars (23). The inner ohm-shaped bars (23) and the outer ohm-shaped bars (23) are located in the same central angle direction and their openings are opposite to each other.

3. The slipform construction rebar limiting device according to claim 2, characterized in that, The lateral limiting mechanism (3) is located between the protruding openings of the inner ohmca (23) and the outer ohmca (23).

4. The reinforcing bar limiting device for slipform construction according to claim 1, characterized in that, The lateral limiting mechanism (3) includes two vertically arranged columns (31) and multiple horizontally arranged support rods (32) at equal intervals along the radial direction, and its shape is ladder-shaped.

5. The reinforcing bar limiting device for slipform construction according to claim 1, characterized in that, A connecting bar (7) is provided between the horizontal ring bar (6) and the vertical bar (5) located in the same central angle direction. The two ends of the connecting bar (7) are bent to form connecting hooks, and their ends are hooked to the intersection of the vertical bar (5) and the horizontal ring bar (6) that intersect in the inner and outer layers, respectively.

6. The reinforcing bar limiting device for slipform construction according to claim 1, characterized in that, The circumferential limiting mechanism (4) includes a fixing part (41), a guide part (42) and a limiting part (43) arranged in sequence. The fixing part (41) is fixedly installed in the construction platform (11). The guide part (42) is arc-shaped, and its two ends are connected to the fixing part (41) and the limiting part (43) respectively. The limiting part (43) is located at the bottom of the guide part (42) and abuts against the side wall of the horizontal ring reinforcement (6).

7. The slipform construction rebar limiting device according to claim 1, characterized in that, The circumferential limiting mechanism (4) is made of U-shaped ribs, with the opening of the U-shaped ribs facing downwards.

8. The reinforcing bar limiting device for slipform construction according to claim 6, characterized in that, The distance between the fixing part (41) and the limiting part (43) is twice the thickness of the protective layer.

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