A prestressed hollow slab beam reinforcement framework anti-deviation fixing device

Abstract

The utility model relates to bridge construction equipment technical field discloses a kind of anti-deviation fixing device of prestressed hollow slab beam reinforcement framework, including connecting rod and limit rod, bottom plate is connected between two connecting rods, limit rod is connected on bottom plate, guide rod is installed in limit rod, sliding block is slidably installed on guide rod, sliding block and limit rod sliding fit, unlocking slot is set up on limit rod, vertical rod is connected in the top of sliding block, rotating rod is rotatably installed in vertical rod, a plurality of support rods are connected on rotating rod, sliding slot for the sliding of support rod is set up on vertical rod.The utility model is positioned horizontal and longitudinal reinforcement by connecting rod and bottom plate and forms support frame, ensure interval and straightness by limit rod and connecting rod, support rod telescoping is controlled by knob, rotating rod and threaded rod, support side reinforcement, sliding block and guide rod cooperation can adjust vertical rod horizontal position, when sliding block moves to unlocking slot, vertical rod can be rotated and laid flat and stored, reduce the interference to subsequent construction.

Description

Technical Field

[0001] This utility model belongs to the technical field of bridge construction equipment, specifically, it relates to an anti-deviation fixing device for the steel reinforcement cage of a prestressed hollow slab beam. Background Technology

[0002] Prestressed hollow slab girders are widely used in small and medium-sized bridges, municipal road overpasses, and industrial park passageways due to their advantages such as low structural height, light weight, stable load-bearing capacity, and convenient construction. They are core precast components that ensure traffic safety and structural durability. The internal steel reinforcement cage, as the main load-bearing structure, directly determines the crack resistance, bending strength, and overall mechanical stability of the prestressed hollow slab girder. Therefore, the construction quality of the steel reinforcement cage is crucial to the safe service life of the entire slab girder structure.

[0003] However, in the precast construction process of prestressed hollow slab beams, when the steel reinforcement cage is tied, the transverse steel reinforcement, longitudinal steel reinforcement and the side steel reinforcement in the height direction need to be arranged according to the design spacing. The lack of a dedicated restraint structure can easily lead to uneven steel reinforcement spacing and straightness deviation.

[0004] In view of this, this utility model is proposed. Summary of the Invention

[0005] To address the issue that during the binding of reinforcing steel cages, the transverse, longitudinal, and lateral reinforcing bars must be arranged according to the designed spacing, but the lack of a dedicated restraint structure easily leads to uneven spacing and straightness deviations, the basic concept of the technical solution adopted in this utility model is as follows: A prestressed hollow slab beam reinforcement cage anti-deviation fixing device includes connecting rods and limiting rods. A base plate is connected between two connecting rods, and a limiting rod is connected to the base plate. A guide rod is installed inside the limiting rod, and a slider is slidably installed on the guide rod. The slider is slidably engaged with the limiting rod. An unlocking groove is provided on the limiting rod. A vertical rod is connected to the top of the slider, and a rotating rod is rotatably installed inside the vertical rod. Several support rods are connected to the rotating rod, and a sliding groove for the support rods to slide is provided on the vertical rod.

[0006] In a preferred embodiment of this utility model, a threaded rod is rotatably connected to the top of the rotating rod, and an internal thread is provided at the end of the upright rod. The threaded rod meshes with the internal thread of the upright rod. A knob is connected to the end of the rotating rod, and a retaining ring is sleeved at the end of the threaded rod. The retaining ring abuts against the end of the upright rod and the bottom of the knob, respectively.

[0007] In a preferred embodiment of this utility model, a rotating ring is rotatably mounted on the upright, the number of rotating rings corresponding to the number of support rods, and an inclined rod connecting the rotating ring and the support rod.

[0008] In a preferred embodiment of this utility model, the limiting rod has a cavity, the slider is slidably installed in the cavity of the limiting rod, and the unlocking groove is formed on the limiting rod and communicates with the cavity.

[0009] In a preferred embodiment of this utility model, several of the support rods are equidistantly distributed along the length direction of the rotating rod.

[0010] In a preferred embodiment of this utility model, grooves are provided on both the limiting rod and the connecting rod, and the grooves are equidistantly distributed along the length direction of the limiting rod and the connecting rod, respectively.

[0011] Compared with the prior art, the present invention has the following advantages: This utility model uses connecting rods and a base plate to form a support frame. Limiting rods and connecting rods are used to position the transverse and longitudinal steel bars to ensure spacing and straightness. Knobs, rotating rods and threaded rods are used to control the extension and retraction of the support rods to stably support the side steel bars. The slider and guide rod can be used to adjust the transverse position of the upright to adapt to steel bar skeletons of different widths. When the slider moves to the unlocking slot, the upright can be rotated and laid flat for storage, reducing interference with subsequent construction.

[0012] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0013] In the attached diagram: Figure 1 A schematic diagram of the overall structure of a prestressed hollow slab beam reinforcement cage anti-displacement fixing device; Figure 2 This is a front view of a prestressed hollow slab beam reinforcement cage anti-displacement fixing device; Figure 3 Rear view of a prestressed hollow slab beam reinforcement cage anti-displacement fixing device; Figure 4 This is a cross-sectional view of a prestressed hollow slab beam reinforcement cage anti-displacement fixing device.

[0014] In the diagram: 1. Connecting rod; 2. Base plate; 3. Limiting rod; 4. Guide rod; 5. Slider; 6. Upright rod; 7. Rotating rod; 8. Threaded rod; 9. Knob; 10. Retaining ring; 11. Support rod; 12. Sliding groove; 13. Inclined rod; 14. Rotating ring; 15. Unlocking groove; 16. Groove. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0016] like Figures 1 to 4 As shown, a prestressed hollow slab beam reinforcement cage anti-deviation fixing device includes a connecting rod 1 and a limiting rod 3. A base plate 2 is connected between the two connecting rods 1. The limiting rod 3 is connected to the base plate 2. A guide rod 4 is installed inside the limiting rod 3. A slider 5 is slidably installed on the guide rod 4. The slider 5 is slidably engaged with the limiting rod 3. An unlocking groove 15 is opened on the limiting rod 3. A vertical rod 6 is connected to the top of the slider 5. A rotating rod 7 is rotatably installed inside the vertical rod 6. Several support rods 11 are connected to the rotating rod 7. A sliding groove 12 is opened on the vertical rod 6 for the support rods 11 to slide. In this setup, the two connecting rods 1 and the base plate 2 form the basic support frame of the device. After the limiting rod 3 is fixed by the base plate 2, the guide rod 4 inside it can guide the slider 5 to slide smoothly and prevent the slider 5 from deviating. The sliding cooperation between the slider 5 and the limiting rod 3 can drive the upright 6 to adjust its lateral position. When the slider 5 slides to the unlocking groove 15, the upright 6 can be rotated and stored, reducing the space occupied by the device. The rotating rod 7 inside the upright 6 can drive the support rod 11 to move along the sliding groove 12. The support rod 11 supports and positions the side of the steel reinforcement skeleton, ensuring that the steel reinforcement skeleton does not deviate during the binding process.

[0017] like Figures 1 to 4 As shown, in a specific embodiment, a threaded rod 8 is rotatably connected to the top of the rotating rod 7, and an internal thread is provided at the end of the upright rod 6. The threaded rod 8 meshes with the internal thread of the upright rod 6. A knob 9 is connected to the end of the rotating rod 7, and a retaining ring 10 is fitted at the end of the threaded rod 8. The retaining ring 10 abuts against the end of the upright rod 6 and the bottom of the knob 9, respectively. In this configuration, the knob 9 can drive the rotating rod 7 to rotate synchronously. Through the meshing action of the threaded rod 8 and the internal thread of the upright rod 6, the rotational motion of the knob 9 is converted into the axial movement of the rotating rod 7, thereby controlling the rotation of the support rod 11. After the retaining ring 10 is fitted at the end of the threaded rod 8, it restricts the axial displacement of the threaded rod 8 by abutting against the end of the upright rod 6 and the bottom of the knob 9, preventing the rotating rod 7 from accidentally shifting downward during the support of the reinforcing bar, thus ensuring the stable support state of the support rod 11 for the reinforcing bar.

[0018] like Figures 1 to 4 As shown, a rotating ring 14 is rotatably mounted on the upright 6. The number of rotating rings 14 corresponds to the number of support rods 11. An inclined rod 13 connects the rotating ring 14 and the support rod 11. In this configuration, the rotating ring 14 can rotate around the upright 6. When the support rod 11 moves along the sliding groove 12, the inclined rod 13 will drive the rotating ring 14 to rotate with the movement of the support rod 11, always maintaining the connection with the support rod 11. The inclined rod 13 forms an oblique support for the support rod 11 through its two ends connected to the rotating ring 14 and the support rod 11 respectively, enhancing the structural stability of the support rod 11 after it extends.

[0019] like Figures 1 to 4As shown, the limiting rod 3 has a cavity, and the slider 5 is slidably installed in the cavity of the limiting rod 3. The unlocking groove 15 is formed on the limiting rod 3 and communicates with the cavity. In this configuration, the cavity of the limiting rod 3 provides sliding space for the slider 5 and also restricts the sliding direction of the slider 5. The unlocking groove 15 communicates with the cavity. When the slider 5 slides into the cavity to the position of the unlocking groove 15, the upright rod 6 at the top of the slider 5 can be rotated through the unlocking groove 15, so that the upright rod 6 can be laid flat and stored, which is convenient for subsequent construction operations.

[0020] like Figures 1 to 4 As shown, furthermore, several support rods 11 are equidistantly distributed along the length of the rotating rod 7. In this configuration, the equidistant distribution of the support rods 11 along the length of the rotating rod 7 can form multiple supports in the height direction of the reinforcing steel cage, ensuring the straightness of the reinforcing steel cage in the height direction.

[0021] like Figures 1 to 4 As shown, both the limiting rod 3 and the connecting rod 1 are provided with grooves 16, which are equidistantly distributed along the length of the limiting rod 3 and the connecting rod 1, respectively. In this configuration, the grooves 16 on the limiting rod 3 are used to place transverse reinforcing bars, and the grooves 16 on the connecting rod 1 are used to place longitudinal reinforcing bars. The shape constraint of the grooves 16 prevents the reinforcing bars from moving arbitrarily during placement.

[0022] The implementation principle of the anti-deviation fixing device for the reinforcing steel skeleton of the prestressed hollow slab beam in this embodiment is as follows: Before operation, the device is placed in the designated position on the construction platform, ensuring that the two connecting rods 1 are aligned with the construction direction of the slab beam, thus establishing a basic support frame. When the device is working, the grooves 16 on the limiting rod 3 and the connecting rod 1 are equidistantly distributed along the length direction. The transverse and longitudinal reinforcing bars can be placed into the corresponding grooves 16 respectively. The shape constraint of the grooves 16 initially ensures that the spacing and straightness of the reinforcing bars meet the construction requirements. For the side reinforcing bars in the height direction, the rotating rod 7 is rotated by rotating the knob 9, causing the support rod 11 on the rotating rod 7 to move along the sliding groove 12 of the upright 6 until the support rod 11 extends horizontally and supports the side reinforcing bars, thus fixing the reinforcing bars. At this time, a retaining ring 10 is fitted at the end of the threaded rod 8. The retaining ring 10 abuts against the end of the upright 6 and the bottom of the knob 9 respectively. With the limiting effect of the retaining ring 10, the threaded rod 8 can be effectively prevented from moving downward, thereby avoiding the support rod 11 from losing its fixing effect on the reinforcing bars due to accidental displacement.

[0023] After the rebar cage is tied, first remove the retaining ring 10 from the end of the threaded rod 8, then turn the knob 9 in the opposite direction to unlock it. The rotating rod 7 will drive the support rod 11 to retract along the sliding groove 12, releasing the support for the side rebar and allowing the rebar cage to smoothly detach from the device's constraints. Then, push the upright rod 6. The slider 5 at the bottom of the upright rod 6 will slide along the guide rod 4 inside the limiting rod 3. When the slider 5 moves to the unlocking groove 15 of the limiting rod 3, the upright rod 6 can rotate around the slider 5 and lie flat, thus preventing the device from obstructing subsequent construction. In addition, the rotating ring 14 on the upright rod 6 is connected to the support rod 11 via the tilting rod 13. During the movement of the support rod 11, the rotating ring 14 will rotate synchronously with the tilting rod 13, providing stable support for the support rod 11 and ensuring that it remains structurally stable when fixing the rebar.

Claims

1. A prestressed hollow slab beam reinforcement framework anti-deviation fixing device, comprising a connecting rod (1) and a limiting rod (3), characterized in that, A base plate (2) is connected between the two connecting rods (1). A limiting rod (3) is connected to the base plate (2). A guide rod (4) is installed inside the limiting rod (3). A slider (5) is slidably installed on the guide rod (4). The slider (5) is slidably engaged with the limiting rod (3). An unlocking groove (15) is provided on the limiting rod (3). A vertical rod (6) is connected to the top of the slider (5). A rotating rod (7) is rotatably installed inside the vertical rod (6). Several support rods (11) are connected to the rotating rod (7). A sliding groove (12) for the support rods (11) to slide is provided on the vertical rod (6).

2. The anti-deviation fixing device of a prestressed hollow slab beam reinforcement framework according to claim 1, characterized in that, The top of the rotating rod (7) is rotatably connected to a threaded rod (8), and the end of the upright rod (6) is provided with an internal thread. The threaded rod (8) meshes with the internal thread of the upright rod (6). The end of the rotating rod (7) is connected to a knob (9), and the end of the threaded rod (8) is fitted with a retaining ring (10). The retaining ring (10) abuts against the end of the upright rod (6) and the bottom of the knob (9) respectively.

3. The anti-deviation fixing device of a prestressed hollow slab beam reinforcement framework according to claim 1, characterized in that, A rotating ring (14) is rotatably mounted on the upright (6). The number of rotating rings (14) corresponds to the number of support rods (11). An inclined rod (13) connects the rotating ring (14) and the support rod (11).

4. The anti-deviation fixing device of a prestressed hollow slab beam reinforcement framework according to claim 1, characterized in that, The limiting rod (3) has a cavity, the slider (5) is slidably installed in the cavity of the limiting rod (3), and the unlocking groove (15) is opened on the limiting rod (3) and communicates with the cavity.

5. The anti-deviation fixing device of a prestressed hollow slab beam reinforcement framework according to claim 1, characterized in that, Several of the support rods (11) are equidistantly distributed along the length of the rotating rod (7).

6. The anti-deviation fixing device of a prestressed hollow slab beam reinforcement framework according to claim 1, characterized in that, The limiting rod (3) and the connecting rod (1) are both provided with grooves (16), and the grooves (16) are equidistantly distributed along the length direction of the limiting rod (3) and the connecting rod (1).

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