A pile foundation reinforcement cage centering fixture tool

Abstract

The utility model relates to pile foundation reinforcement cage technical field, concretely disclose a kind of pile foundation reinforcement cage centering fixture tool, including foundation pit, the middle part of foundation pit is connected with casing, the top of casing is provided with support rod, one end of support rod is connected with connecting rod, the top of connecting rod is provided with lug, the bottom of connecting rod is provided with hook, the bottom of connecting rod is connected with centering ring by hook, the middle part inner wall of centering ring is provided with rolling shaft, one end of support rod is provided with limiting assembly. The centering ring of the device can limit the release of reinforcement cage, so that it can only be placed on the rolling shaft, prevent the reinforcement cage from shaking during release, and cannot be centered, so that the thickness of the concrete protective layer after pouring is inconsistent.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation reinforcement cage technology, and more specifically, to a centering clamping fixture for pile foundation reinforcement cages. Background Technology

[0002] A pile foundation reinforcement cage refers to a reinforcement cage that is lowered into a casing in the foundation pit using hoisting equipment.

[0003] The existing steel reinforcement cage is prone to shaking during the lowering process, which causes it to be out of center after being lowered into the casing. This results in inconsistent spacing between the cage and the inner wall of the casing, leading to differences in the concrete protective layer formed after pouring. Consequently, some sections of the protective layer are thinner, affecting the quality of the pouring. Utility Model Content

[0004] The purpose of this utility model is to provide a centering clamping fixture for pile foundation steel cages, which solves the problem that the steel cage cannot be centered on the casing due to shaking during the lowering process, resulting in inconsistent concrete cover thickness during final pouring.

[0005] This utility model is achieved through the following technical solution: This utility model provides a centering fixture for a pile foundation steel cage, including a foundation pit, a protective casing connected to the middle of the foundation pit, a support rod at the top of the protective casing, a connecting rod connected to one end of the support rod, a hanging lug at the top of the connecting rod, a hook at the bottom of the connecting rod, a centering ring connected to the bottom of the connecting rod via the hook, a rolling shaft on the inner wall of the centering ring, and a limiting component at one end of the support rod.

[0006] Preferably, the support rod is L-shaped, and the connecting rod is connected to the bend at one end of the support rod via a top lug.

[0007] Preferably, the connecting rod fits against the inner wall of the centering ring, and the hook engages with the centering ring.

[0008] Preferably, the outer diameter of the central ring is smaller than the inner diameter of the protective sleeve, and the hook is attached to the inner wall of the protective sleeve.

[0009] Preferably, the two ends of the rolling shaft are hinged to rods, and one end of the rod is connected to the inner wall of the centering ring.

[0010] Preferably, the limiting component includes a fitting groove, a retractable rod, and a stop plate. The fitting groove is disposed at one end of the support rod, the retractable rod is connected in the fitting groove, and the stop plate is disposed at one end of the retractable rod.

[0011] Preferably, the sidewall of the retractable rod is threaded to match the inner wall of the fitting groove.

[0012] Preferably, the distance between the abutment plate and one end of the support rod matches the hanging lug.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: 1. The centering ring in the device can limit the lowering of the reinforcing cage, ensuring that it can only be lowered against the rolling shaft. This prevents the reinforcing cage from shaking during lowering, which could lead to misalignment and inconsistent thickness of the concrete protective layer after pouring.

[0014] 2. The device is also equipped with a limiting component to limit the stability of the connecting lug connection on the connecting rod, making the connection of the connecting rod more stable, thereby making the centering ring more stable when lowering the steel cage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0017] Figure 3 This is a side view sectional structural diagram of the support rod of this utility model.

[0018] Figure 4 This is a top view of the central ring structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the overall structure of the connecting rod of this utility model.

[0020] Attached reference numerals: 1-Foundation pit, 2-Casing, 3-Support rod, 301-Connecting rod, 3011-Hanging lug, 3012-Hook, 3013-Matching groove, 3014-Retracting rod, 3015-Abutting plate, 4-Centering ring, 401-Rolling shaft. Detailed Implementation

[0021] The following is combined with Figures 1 to 5 This utility model will be described in detail.

[0022] A centering fixture for a pile foundation rebar cage includes a foundation pit 1, a casing 2 connected to the middle of the foundation pit 1, a support rod 3 at the top of the casing 2, a connecting rod 301 connected to one end of the support rod 3, a hanging lug 3011 at the top of the connecting rod 301, a hook 3012 at the bottom of the connecting rod 301, a centering ring 4 connected to the bottom of the connecting rod 301 via the hook 3012, a rolling shaft 401 on the inner wall of the centering ring 4, a limiting component at one end of the support rod 3, the support rod 3 being L-shaped, the connecting rod 301 being connected to the bend at one end of the support rod 3 via the top hanging lug 3011, the connecting rod 301 fitting against the inner wall of the centering ring 4, and the hook 3012 engaging with the circular centering ring 4.

[0023] First, the casing 2 is placed into the pit 1. Then, the support rod 3 is welded to the top of the casing 2. The connecting rod 301 is connected to the bend at the top of the support rod 3 via the lug 3011, so that the connecting rod 301 is vertical in the casing 2. Then, the centering ring 4 is hung on the bottom of the connecting rod 301 via the hook 3012 at the bottom of the connecting rod 301. Because the hook 3012 fits the casing 2, the centering ring 4 will not easily shake when it is connected.

[0024] Furthermore, the outer diameter of the centering ring 4 is smaller than the inner diameter of the protective sleeve 2, the hook 3012 is attached to the inner wall of the protective sleeve 2, and the two ends of the rolling shaft 401 are hinged to rods, one end of which is connected to the inner wall of the centering ring 4.

[0025] When the rebar cage is lowered into the casing 2, it passes through the centering ring 4. The lowering position of the rebar cage is limited by the rolling shaft 401 on the inner wall of the centering ring 4, so that it will not deviate or fail to center. At the same time, the rolling shaft 401 itself is also the thickness of the protective layer generated when the concrete is poured into the rebar cage. After the concrete is poured to a certain height and close to the centering ring 4, the centering ring 4 is taken out and reused.

[0026] Furthermore, the limiting components include a fitting groove 3013, a retractable rod 3014, and a stop plate 3015. The fitting groove 3013 is disposed at one end of the support rod 3, the retractable rod 3014 is connected in the fitting groove 3013, the stop plate 3015 is disposed at one end of the retractable rod 3014, the side wall of the retractable rod 3014 is threadedly matched with the inner wall of the fitting groove 3013, and the distance between the stop plate 3015 and one end of the support rod 3 is matched with the lug 3011.

[0027] When the lug 3011 is connected to the support rod 3, it is connected between one end of the support rod 3 and the abutment plate 3015. The abutment plate 3015 is connected to the fitting groove 3013 through the retraction rod 3014. The distance is limited by the thread and the displacement is controlled to limit the two sides of the lug 3011 and prevent the lug 3011 from moving on the support rod 3.

[0028] The following is a detailed implementation process of this utility model: First, the casing 2 is placed into the foundation pit 1. Then, a support rod 3 is welded to the top of the casing 2. A connecting rod 301 is connected to the bend at the top of the support rod 3 via a hanging lug 3011, so that the connecting rod 301 is vertical in the casing 2. Then, the centering ring 4 is hung at the bottom of the connecting rod 301 via a hook 3012. Because the hook 3012 fits snugly with the casing 2, the centering ring 4 will not easily shake when it is connected. When the rebar cage is hoisted into the casing 2, the rebar cage will pass through the centering ring 4. The lowering position of the rebar cage is limited by the rolling shaft 401 on the inner wall of the centering ring 4, so that it will not deviate or fail to center. At the same time, the rolling shaft 401 itself is also the protective layer thickness generated when the concrete is poured into the rebar cage. After pouring to a certain height and approaching the centering ring 4, the centering ring 4 is taken out and reused.

[0029] When the lug 3011 is connected to the support rod 3, it is connected between one end of the support rod 3 and the abutment plate 3015. The abutment plate 3015 is connected to the fitting groove 3013 through the retraction rod 3014. The distance is limited by the thread and the displacement is controlled to limit the two sides of the lug 3011 and prevent the lug 3011 from moving on the support rod 3.

Claims

1. A centering fixture for a pile foundation reinforcement cage, comprising a foundation pit (1), wherein a protective casing (2) is connected to the middle of the foundation pit (1), characterized in that, The top of the protective sleeve (2) is provided with a support rod (3), one end of the support rod (3) is connected to a connecting rod (301), the top of the connecting rod (301) is provided with a hanging ear (3011), the bottom of the connecting rod (301) is provided with a hook (3012), the bottom of the connecting rod (301) is connected to a centering ring (4) through the hook (3012), the inner wall of the centering ring (4) is provided with a rolling shaft (401), and one end of the support rod (3) is provided with a limiting component.

2. The pile foundation steel cage centering clamping fixture according to claim 1 is characterized as follows: the support rod (3) is arranged in an "L" shape, and the connecting rod (301) is connected to the bend at one end of the support rod (3) through the top hanging ear (3011).

3. The pile foundation steel cage centering clamping fixture according to claim 1 is characterized in that the connecting rod (301) fits against the inner wall of the centering ring (4), and the hook (3012) engages with the centering ring (4).

4. The pile foundation steel cage centering clamping fixture according to claim 1 is characterized in that the outer diameter of the centering ring (4) is smaller than the inner diameter of the casing (2), and the hook (3012) is attached to the inner wall of the casing (2).

5. A centering fixture for a pile foundation steel cage according to claim 1, characterized in that the two ends of the rolling shaft (401) are hinged to rods, one end of which is connected to the inner wall of the centering ring (4).

6. A centering fixture for a pile foundation steel cage according to claim 1, characterized in that the limiting component includes a fitting groove (3013), a contraction rod (3014), and abutment plate (3015), wherein the fitting groove (3013) is disposed at one end of the support rod (3), the contraction rod (3014) is connected in the fitting groove (3013), and the abutment plate (3015) is disposed at one end of the contraction rod (3014).

7. A centering fixture for a pile foundation steel cage according to claim 6, characterized in that the side wall of the contraction rod (3014) is threadedly matched with the inner wall of the fitting groove (3013).

8. A centering fixture for a pile foundation steel cage according to claim 6, characterized in that the distance between the abutment plate (3015) and one end of the support rod (3) is matched with the hanging lug (3011).

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