Control component for protective layer of reinforcement cage of rotary excavating cast-in-place pile

Abstract

When the rotary excavating cast-in-place pile reinforcement cage protection layer control component is used, the first anti-scraping assembly and the second anti-scraping assembly are placed in a pile hole, a pile hole ring is placed on the edge of an opening of the pile hole, then the supporting rod is pressed to enable the ground nail to be inserted into the ground, the rotary excavating cast-in-place pile reinforcement cage protection layer control component is fixed to the opening of the pile hole, and then a crane is used for hoisting a reinforcement cage. Putting the lower end of the reinforcement cage into the pile hole ring, and then lowering the reinforcement cage; in the lowering process of the reinforcement cage, the outer wall of the reinforcement cage is attached to the first roller protection pad and the second roller protection pad all the time, the first roller protection pad and the first arc-shaped plate as well as the second roller protection pad and the second arc-shaped plate are located between the reinforcement cage and the hole wall of the pile hole, and the first roller protection pad and the second roller protection pad roll while the reinforcement cage is lowered; and when the reinforcement cage is completely put into the pile hole, the supporting rod is lifted upwards to separate the ground nail from the ground, and then the device is taken down from the opening of the pile hole. The device is simple and convenient to use and can be repeatedly used, so that the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to the field of rotary drilling pile construction technology, specifically referring to a control component for the protective layer of the reinforcing cage of a rotary drilling pile. Background Technology

[0002] Building construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of structures, or the process of turning the lines on design drawings into a physical object at a designated location. It includes foundation construction, main structure construction, roofing construction, and decoration construction.

[0003] During the construction of rotary cast-in-place piles, after the rotary cast-in-place pile is drilled, the distance between the hole wall and the outer wall of the reinforcing cage is the thickness of the reinforcing cage protective layer. After the concrete is poured, the concrete layer formed between the hole wall and the outer wall of the reinforcing cage is the reinforcing cage protective layer of the rotary cast-in-place pile. In order to prevent the reinforcing cage from contacting the hole wall and causing scratches, the position of the reinforcing cage is generally limited by the rotary cast-in-place pile reinforcing cage protective layer control component.

[0004] Existing control components for the protective layer of rotary cast-in-place pile reinforcement cages generally use roller pads. This involves drilling a hole in the center of the roller pad, inserting a steel bar of the same specification as the stirrup, and then spot welding it to the main reinforcement. The roller pad is a precast mortar block. However, the roller pads installed in this way are disposable. The roller pads are installed on the reinforcement cage and come into direct contact with the borehole wall. They roll as they are lowered into the pile hole along with the reinforcement cage, making them unrecyclable. Furthermore, it is quite cumbersome to install several roller pads on each reinforcement cage.

[0005] Therefore, it is desirable to provide a control component for the protective layer of the reinforcing cage of rotary cast-in-place piles, which is simple and convenient to use and can be reused, thereby improving construction efficiency and reducing construction costs. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, one objective of this utility model is to provide a control component for the protective layer of the reinforcing cage of rotary cast-in-place piles, which is simple and convenient to use and can be reused, thereby improving construction efficiency, reducing construction costs, and is suitable for large-scale promotion and application.

[0007] Another objective of this utility model is to provide a control component for the protective layer of the reinforcing cage of rotary cast-in-place piles, which is ingeniously designed, simple in structure, easy to manufacture, and low in manufacturing cost, making it suitable for large-scale promotion and application.

[0008] To achieve the above objectives, this utility model provides a control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile, characterized in that it includes a top support frame, a first anti-scraping component, and a second anti-scraping component, wherein:

[0009] The top support frame includes a pile hole ring, support rods, and ground nails. The pile hole ring is horizontally arranged, the support rods extend radially outward from the pile hole ring, and the ground nails are vertically arranged and downward. The ground nails are located below the support rods and connected to the support rods. There are multiple support rods, which are horizontally arranged around the pile hole ring at intervals. Each of the multiple support rods is equipped with a ground nail.

[0010] The first anti-scratch assembly includes a first connecting rod, a first arc-shaped plate, and a first roller pad. The first arc-shaped plate is vertically arranged and arranged along the circumference of the pile hole ring and located below the pile hole ring. The first roller pad is vertically arranged and arranged radially along the circle where the first arc-shaped plate is located. The first roller pad is located inside the first arc-shaped plate and is rotatably connected to the first arc-shaped plate around the axis of the first roller pad. The first connecting rod is vertically arranged and located between the pile hole ring and the first arc-shaped plate and connects the pile hole ring and the first arc-shaped plate respectively.

[0011] The second anti-scratch assembly includes a second connecting rod, a second arc-shaped plate, and a second roller pad. The second arc-shaped plate is vertically arranged and circumferentially arranged along the pile hole ring and located below the first arc-shaped plate. The second roller pad is vertically arranged and radially arranged along the circle containing the second arc-shaped plate. The second roller pad is located inside the second arc-shaped plate and rotatably connected to the second arc-shaped plate around its axis. The second connecting rod is vertically arranged and located between the first arc-shaped plate and the second arc-shaped plate, and connects the first arc-shaped plate and the second arc-shaped plate respectively.

[0012] The number of the first anti-scratch components is multiple, and the first arc-shaped plates of the multiple first anti-scratch components are arranged at intervals along the circumference of the pile hole ring. The number of the second anti-scratch components is the same as the number of the first anti-scratch components, and the second anti-scratch components are arranged in a one-to-one correspondence with the first anti-scratch components.

[0013] Preferably, there are four support rods: a front support rod, a rear support rod, a left support rod, and a right support rod. The front and rear support rods are arranged along the front-to-back direction and spaced apart from each other. The left and right support rods are arranged along the left-to-right direction and spaced apart from each other. An arc-shaped rod is provided between the rear end of the front support rod and the right end of the left support rod, between the right end of the left support rod and the front end of the rear support rod, between the front end of the rear support rod and the left end of the right support rod, and between the left end of the right support rod and the rear end of the front support rod. All four arc-shaped rods are arranged along the circumference of the pile hole ring and spaced apart from each other, thereby forming the pile hole ring through the four arc-shaped rods, the rear end of the front support rod, the right end of the left support rod, the front end of the rear support rod, and the left end of the right support rod.

[0014] The first arc-shaped plate is located below the arc-shaped rod, and the first connecting rod is located between the arc-shaped rod and the first arc-shaped plate and connects the arc-shaped rod and the first arc-shaped plate respectively. The number of the first anti-scratch components is 4, and the 4 first anti-scratch components and the 4 arc-shaped rods are arranged in a one-to-one correspondence.

[0015] Preferably, for each support rod, there are multiple ground spikes, and the multiple ground spikes are spaced apart from each other along the length of the support rod.

[0016] More preferably, for each of the support rods, the number of ground stakes is 3.

[0017] Preferably, the first anti-scratch assembly further includes a first upper clamping plate, a second upper clamping plate, a first upper adjusting bolt, a first upper adjusting nut, a first lower clamping plate, a second lower clamping plate, a first lower adjusting bolt, and a first lower adjusting nut, wherein:

[0018] The first upper adjusting bolt is located below the pile hole ring and is arranged in a direction parallel to the tangent of the pile hole ring. The first upper clamping plate and the second upper clamping plate are both arranged vertically and are both perpendicular to the first upper adjusting bolt. The first upper clamping plate and the second upper clamping plate are both located below the pile hole ring and are both connected to the pile hole ring. The upper end of the first connecting rod is located between the first upper clamping plate and the second upper clamping plate and abuts against the first upper clamping plate and the second upper clamping plate respectively. The first upper clamping plate and the second upper clamping plate are both located between the head of the first upper adjusting bolt and the first upper adjusting nut and abut against the head of the first upper adjusting bolt and the first upper adjusting nut respectively. The first upper clamping plate and the second upper clamping plate are sequentially passed through the middle part of the first upper adjusting bolt. The tail of the first upper adjusting bolt passes through and is threadedly engaged with the first upper adjusting nut.

[0019] The first lower adjusting bolt is located below and parallel to the first upper adjusting bolt. The first lower clamping plate and the second lower clamping plate are both vertically arranged and perpendicular to the first lower adjusting bolt. The first lower clamping plate and the second lower clamping plate are both disposed on the first arc-shaped plate. The lower end of the first connecting rod is located between the first lower clamping plate and the second lower clamping plate and abuts against the first lower clamping plate and the second lower clamping plate respectively. The first lower clamping plate and the second lower clamping plate are both located between the head of the first lower adjusting bolt and the first lower adjusting nut and abut against the head of the first lower adjusting bolt and the first lower adjusting nut respectively. The first lower clamping plate and the second lower clamping plate are sequentially inserted through the middle of the first lower adjusting bolt. The tail of the first lower adjusting bolt is inserted through and threadedly engaged with the first lower adjusting nut.

[0020] Preferably, the second anti-scratch assembly further includes a third upper clip, a fourth upper clip, a second upper adjusting bolt, a second upper adjusting nut, a third lower clip, a fourth lower clip, a second lower adjusting bolt, and a second lower adjusting nut, wherein:

[0021] The second upper adjusting bolt is located below the first arc-shaped plate and is set along a direction parallel to the tangent of the pile hole ring. The third upper clamping plate and the fourth upper clamping plate are both set vertically and are perpendicular to the second upper adjusting bolt. The third upper clamping plate and the fourth upper clamping plate are both located below the first arc-shaped plate and are both connected to the first arc-shaped plate. The upper end of the second connecting rod is located between the third upper clamping plate and the fourth upper clamping plate and abuts against the third upper clamping plate and the fourth upper clamping plate respectively. The third upper clamping plate and the fourth upper clamping plate are both located between the head of the second upper adjusting bolt and the second upper adjusting nut and abut against the head of the second upper adjusting bolt and the second upper adjusting nut respectively. The third upper clamping plate and the fourth upper clamping plate are sequentially passed through the middle part of the second upper adjusting bolt. The tail of the second upper adjusting bolt passes through and is threadedly engaged with the second upper adjusting nut.

[0022] The second lower adjusting bolt is located below and parallel to the second upper adjusting bolt. The third and fourth lower clamping plates are both vertically arranged and perpendicular to the second lower adjusting bolt. The third and fourth lower clamping plates are both set on the second arc-shaped plate. The lower end of the second connecting rod is located between the third and fourth lower clamping plates and abuts against them respectively. The third and fourth lower clamping plates are both located between the head of the second lower adjusting bolt and the second lower adjusting nut and abut against them respectively. The third and fourth lower clamping plates are sequentially inserted through the middle of the second lower adjusting bolt, and the tail of the second lower adjusting bolt is threaded and engaged with the second lower adjusting nut.

[0023] Preferably, for each of the first anti-scratch components, there are multiple first connecting rods, and the multiple first connecting rods are arranged at intervals along the circumference of the pile hole ring.

[0024] More preferably, for each of the first scratch-resistant components, the number of the first connecting rods is 2.

[0025] Preferably, for each of the second anti-scratch components, there are multiple second connecting rods, and the multiple second connecting rods are arranged at intervals along the circumference of the pile hole ring.

[0026] More preferably, for each of the second scratch-resistant components, the number of the second linkages is two.

[0027] The main beneficial effects of this utility model are as follows:

[0028] 1. When using the rotary cast-in-place pile reinforcement cage protective layer control component of this utility model, the first anti-scratch component and the second anti-scratch component are placed into the pile hole, the pile hole ring is placed at the edge of the pile hole opening, and then the support rod is pressed to insert the ground nail into the ground, so that the rotary cast-in-place pile reinforcement cage protective layer control component is fixed at the pile hole opening. Then, the reinforcement cage is lifted by a crane, and the lower end of the reinforcement cage is placed into the pile hole ring, and then the reinforcement cage is lowered. During the lowering process of the reinforcement cage, the outer wall of the reinforcement cage is always in contact with the first roller pad and the second roller pad. The first roller pad, the first arc-shaped plate, the second roller pad, and the second arc-shaped plate are all located between the reinforcing cage and the hole wall of the pile hole. As the reinforcing cage is lowered, the first roller pad and the second roller pad roll simultaneously until the reinforcing cage is completely lowered into the pile hole. Then, the support rod is lifted to separate the ground nail from the ground. Finally, the protective layer control component of the rotary cast-in-place pile reinforcing cage is removed from the opening of the pile hole. Therefore, it is simple and convenient to use and can be reused, thereby improving construction efficiency, reducing construction costs, and is suitable for large-scale promotion and application.

[0029] 2. When using the rotary drilling grouting pile reinforcement cage protective layer control component of this utility model, the first anti-scraping component and the second anti-scraping component are placed into the pile hole, the pile hole ring is placed at the edge of the pile hole opening, and then the support rod is pressed to insert the ground nail into the ground, so that the rotary drilling grouting pile reinforcement cage protective layer control component is fixed at the pile hole opening. Then, the reinforcement cage is lifted by a crane, and the lower end of the reinforcement cage is placed into the pile hole ring, and then the reinforcement cage is lowered. During the lowering process of the reinforcement cage, the outer wall of the reinforcement cage is always in contact with the first roller pad and the second roller pad. The roller pads are fitted together, with the first roller pad, the first arc-shaped plate, the second roller pad, and the second arc-shaped plate all positioned between the reinforcing cage and the borehole wall. As the reinforcing cage is lowered, the first and second roller pads roll simultaneously until the reinforcing cage is completely lowered into the borehole. Then, the support rod is lifted to separate the ground nail from the ground, and the protective layer control component of the rotary-dug pile reinforcing cage is removed from the opening of the borehole. Therefore, its design is ingenious, its structure is simple, its manufacturing is convenient, and its manufacturing cost is low, making it suitable for large-scale promotion and application.

[0030] These and other objects, features and advantages of this utility model will be fully apparent from the following detailed description and drawings, and can be achieved by the means, devices and combinations thereof specifically pointed out in the description of the utility model. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of a specific embodiment of the protective layer control component for the reinforcing cage of a rotary-drilled cast-in-place pile according to this utility model.

[0032] Figure 2 yes Figure 1 A perspective view of the first anti-scratch component of a specific embodiment is shown.

[0033] Figure 3 yes Figure 1 A perspective view of the second scratch-resistant component in a specific embodiment is shown.

[0034] Figure 4 yes Figure 1 The diagram shown is a partial three-dimensional representation of a specific embodiment in use.

[0035] Figure 5 yes Figure 1 The diagram shown is a top view of the specific embodiment in use.

[0036] (Symbol Explanation)

[0037] 1. Top support frame; 101. Pile hole ring; 102. Support rod; 103. Ground nail; 104. Curved rod;

[0038] 2. First anti-scratch component; 201. First connecting rod; 202. First arc-shaped plate; 203. First roller pad; 204. First upper clamping plate; 205. Second upper clamping plate; 206. First upper adjusting bolt; 207. First upper adjusting nut; 208. First lower clamping plate; 209. Second lower clamping plate; 210. First lower adjusting bolt; 211. First lower adjusting nut; 212. First fixed shaft;

[0039] 3 Second anti-scratch component; 301 Second connecting rod; 302 Second arc-shaped plate; 303 Second roller pad; 304 Third upper clamping plate; 305 Fourth upper clamping plate; 306 Second upper adjusting bolt; 307 Second upper adjusting nut; 308 Third lower clamping plate; 309 Fourth lower clamping plate; 310 Second lower adjusting bolt; 311 Second lower adjusting nut; 312 Second fixed shaft;

[0040] 4. Reinforcing steel cage. Detailed Implementation

[0041] In order to better understand the technical content of this utility model, the following embodiments are provided for detailed description.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Please see Figures 1-3 As shown, in a specific embodiment of this utility model, the protective layer control component for the rotary-drilled cast-in-place pile reinforcement cage includes a top support frame 1, a first anti-scraping component 2, and a second anti-scraping component 3, wherein:

[0044] The top support frame 1 includes a pile hole ring 101, a support rod 102, and a ground nail 103. The pile hole ring 101 is horizontally arranged. The support rod 102 extends radially outward from the pile hole ring 101. The ground nail 103 is vertically arranged and downward. The ground nail 103 is located below the support rod 102 and connected to the support rod 102. There are multiple support rods 102, which are horizontally arranged around the pile hole ring 101 at intervals. Each of the multiple support rods 102 is provided with a ground nail 103.

[0045] The first anti-scratch component 2 includes a first connecting rod 201, a first arc-shaped plate 202, and a first roller pad 203. The first arc-shaped plate 202 is vertically arranged and arranged along the circumference of the pile hole ring 101 and located below the pile hole ring 101. The first roller pad 203 is vertically arranged and arranged radially along the circle where the first arc-shaped plate 202 is located. The first roller pad 203 is located inside the first arc-shaped plate 202 and is rotatably connected to the first arc-shaped plate 202 around the axis of the first roller pad 203. The first connecting rod 201 is vertically arranged and located between the pile hole ring 101 and the first arc-shaped plate 202 and connects the pile hole ring 101 and the first arc-shaped plate 202 respectively.

[0046] The second anti-scratch component 3 includes a second connecting rod 301, a second arc-shaped plate 302, and a second roller pad 303. The second arc-shaped plate 302 is vertically arranged and arranged circumferentially along the pile hole ring 101 and located below the first arc-shaped plate 202. The second roller pad 303 is vertically arranged and arranged radially along the circle where the second arc-shaped plate 302 is located. The second roller pad 303 is located inside the second arc-shaped plate 302 and is rotatably connected to the second arc-shaped plate 302 around the axis of the second roller pad 303. The second connecting rod 301 is vertically arranged and located between the first arc-shaped plate 202 and the second arc-shaped plate 302 and connects the first arc-shaped plate 202 and the second arc-shaped plate 302 respectively.

[0047] There are multiple first anti-scratch components 2, and the first arc-shaped plates 202 of the multiple first anti-scratch components 2 are arranged at intervals along the circumference of the pile hole ring 101. The number of second anti-scratch components 3 is the same as the number of first anti-scratch components 2, and the second anti-scratch components 3 are arranged in a one-to-one correspondence with the first anti-scratch components 2.

[0048] The number of support rods 102 can be determined as needed. The term "multiple rods" refers to two or more rods. Please refer to [link to relevant documentation]. Figure 1As shown, in a specific embodiment of this utility model, there are four support rods 102, namely a front support rod, a rear support rod, a left support rod, and a right support rod. The front support rod and the rear support rod are arranged along the front-to-back direction and are spaced apart from each other. The left support rod and the right support rod are arranged along the left-to-right direction and are spaced apart from each other. The distance between the rear end of the front support rod and the right end of the left support rod, and between the right end of the left support rod and the front end of the rear support rod are also specified. Arc-shaped rods 104 are provided between the front end of the rear support rod and the left end of the right support rod, and between the left end of the right support rod and the rear end of the front support rod. The four arc-shaped rods 104 are arranged along the circumference of the pile hole ring 101 and are spaced apart from each other along the circumference of the pile hole ring 101, thereby forming the pile hole ring 101 through the four arc-shaped rods 104, the rear end of the front support rod, the right end of the left support rod, the front end of the rear support rod, and the left end of the right support rod.

[0049] The first arc-shaped plate 202 is located below the arc-shaped rod 104, and the first connecting rod 201 is located between the arc-shaped rod 104 and the first arc-shaped plate 202 and connects the arc-shaped rod 104 and the first arc-shaped plate 202 respectively. The number of the first anti-scratch components 2 is 4, and the 4 first anti-scratch components 2 and the 4 arc-shaped rods 104 are arranged in a one-to-one correspondence.

[0050] For ease of storage and carrying, in one specific embodiment of this utility model, the right end of the left support rod is rotatable downwards and to the right around the front-rear direction, the left end of the right support rod is rotatable downwards and to the left around the front-rear direction, the rear end of the front support rod is rotatable downwards and to the rear around the left-right direction, and the front end of the rear support rod is rotatable downwards and to the front around the left-right direction. With this configuration, when not in use, rotating the right end of the left support rod downwards and to the right by, for example, 90°, rotating the left end of the right support rod downwards and to the left by, for example, 90°, rotating the rear end of the front support rod downwards and to the rear around the left-right direction by, for example, 90°, and rotating the front end of the rear support rod downwards and to the front around the left-right direction by, for example, 90°, brings all the support rods close to the first anti-scratch component 2, facilitating folding of this utility model and reducing the space occupied by the rotary drilling pile reinforcement cage protective layer control component during storage.

[0051] For each support rod 102, the number of ground nails 103 can be determined as needed. Preferably, for each support rod 102, there are multiple ground nails 103, which are spaced apart from each other along the length of the support rod 102. Please refer to [link / reference]. Figure 1As shown, in a specific embodiment of this utility model, for each of the support rods 102, the number of ground nails 103 is 3.

[0052] The first connecting rod 201 is located between the pile hole ring 101 and the first arc-shaped plate 202 and connects the pile hole ring 101 and the first arc-shaped plate 202 respectively. It can adopt any suitable structure; please refer to [link / reference]. Figures 1-2 As shown, in a specific embodiment of this utility model, the first anti-scratch component 2 further includes a first upper clamping plate 204, a second upper clamping plate 205, a first upper adjusting bolt 206, a first upper adjusting nut 207, a first lower clamping plate 208, a second lower clamping plate 209, a first lower adjusting bolt 210, and a first lower adjusting nut 211, wherein:

[0053] The first upper adjusting bolt 206 is located below the pile hole ring 101 and is arranged in a direction parallel to the tangent of the pile hole ring 101. The first upper clamping plate 204 and the second upper clamping plate 205 are both vertically arranged and perpendicular to the first upper adjusting bolt 206. The first upper clamping plate 204 and the second upper clamping plate 205 are both located below the pile hole ring 101 and are both connected to the pile hole ring 101. The upper end of the first connecting rod 201 is located between the first upper clamping plate 204 and the second upper clamping plate 205 and abuts against the first upper... The first upper clamp 204 and the second upper clamp 205 are located between the head of the first upper adjusting bolt 206 and the first upper adjusting nut 207 and respectively abut against the head of the first upper adjusting bolt 206 and the first upper adjusting nut 207. The first upper clamp 204 and the second upper clamp 205 are sequentially passed through the middle of the first upper adjusting bolt 206, and the tail of the first upper adjusting bolt 206 is threaded and engaged with the first upper adjusting nut 207.

[0054] The first lower adjusting bolt 210 is located below and parallel to the first upper adjusting bolt 206. The first lower clamping plate 208 and the second lower clamping plate 209 are both vertically arranged and perpendicular to the first lower adjusting bolt 210. The first lower clamping plate 208 and the second lower clamping plate 209 are both arranged on the first arc plate 202. The lower end of the first connecting rod 201 is located between the first lower clamping plate 208 and the second lower clamping plate 209 and abuts against the first lower clamping plate 208 and the second lower clamping plate 209 respectively. The first lower clamping plate 208 and the second lower clamping plate 209 are both located between the head of the first lower adjusting bolt 210 and the first lower adjusting nut 211 and abut against the head of the first lower adjusting bolt 210 and the first lower adjusting nut 211 respectively. The first lower clamping plate 208 and the second lower clamping plate 209 are sequentially passed through the middle part of the first lower adjusting bolt 210, and the tail of the first lower adjusting bolt 210 is threaded and engaged with the first lower adjusting nut 211.

[0055] With the above configuration, by loosening the first upper adjusting nut 207 and the first lower adjusting nut 211, and then rotating the first connecting rod 201, the position of the first arc plate 202 and the first roller pad 203, along with the second arc plate 302 and the second roller pad 303, can be adjusted inward or outward. Then, by tightening the first upper adjusting nut 207 and the first lower adjusting nut 211, it can be applied to steel cages 4 with different outer diameters.

[0056] The second connecting rod 301 is located between the first arc-shaped plate 202 and the second arc-shaped plate 302 and connects the first arc-shaped plate 202 and the second arc-shaped plate 302 respectively. It can adopt any suitable structure; please refer to [link / reference]. Figure 1 and Figure 3 As shown, in a specific embodiment of this utility model, the second anti-scratch component 3 further includes a third upper clamping plate 304, a fourth upper clamping plate 305, a second upper adjusting bolt 306, a second upper adjusting nut 307, a third lower clamping plate 308, a fourth lower clamping plate 309, a second lower adjusting bolt 310, and a second lower adjusting nut 311, wherein:

[0057] The second upper adjusting bolt 306 is located below the first arc-shaped plate 202 and is arranged in a direction parallel to the tangent of the pile hole ring 101. The third upper clamping plate 304 and the fourth upper clamping plate 305 are both vertically arranged and perpendicular to the second upper adjusting bolt 306. The third upper clamping plate 304 and the fourth upper clamping plate 305 are both located below the first arc-shaped plate 202 and are both connected to the first arc-shaped plate 202. The upper end of the second connecting rod 301 is located between the third upper clamping plate 304 and the fourth upper clamping plate 305 and abuts against the pile hole ring 101 respectively. The third upper clamping plate 304 and the fourth upper clamping plate 305 are both located between the head of the second upper adjusting bolt 306 and the second upper adjusting nut 307 and respectively abut against the head of the second upper adjusting bolt 306 and the second upper adjusting nut 307. The third upper clamping plate 304 and the fourth upper clamping plate 305 are sequentially passed through the middle part of the second upper adjusting bolt 306, and the tail of the second upper adjusting bolt 306 is threaded and engaged with the second upper adjusting nut 307.

[0058] The second lower adjusting bolt 310 is located below and parallel to the second upper adjusting bolt 306. The third lower clamping plate 308 and the fourth lower clamping plate 309 are both vertically arranged and perpendicular to the second lower adjusting bolt 310. The third lower clamping plate 308 and the fourth lower clamping plate 309 are both arranged on the second arc-shaped plate 302. The lower end of the second connecting rod 301 is located between the third lower clamping plate 308 and the fourth lower clamping plate 309 and abuts against the third lower clamping plate 310. 8 and the fourth lower clamping piece 309, the third lower clamping piece 308 and the fourth lower clamping piece 309 are both located between the head of the second lower adjusting bolt 310 and the second lower adjusting nut 311 and respectively abut against the head of the second lower adjusting bolt 310 and the second lower adjusting nut 311, the third lower clamping piece 308 and the fourth lower clamping piece 309 are sequentially passed through the middle part of the second lower adjusting bolt 310, and the tail of the second lower adjusting bolt 310 is threaded and engaged with the second lower adjusting nut 311.

[0059] With the above configuration, by loosening the second upper adjusting nut 307 and the second lower adjusting nut 311, and then rotating the second connecting rod 301, the positions of the second arc plate 302 and the second roller pad 303 can be adjusted inward or outward. Then, by tightening the second upper adjusting nut 307 and the second lower adjusting nut 311, the second anti-scratch component 3 can be applied to steel cages 4 with different outer diameters.

[0060] For each of the first anti-scratch components 2, the number of the first connecting rods 201 can be determined as needed. Preferably, for each of the first anti-scratch components 2, there are multiple first connecting rods 201, which are spaced apart from each other along the circumference of the pile hole ring 101. Please refer to Figures 1-2 As shown, in a specific embodiment of this utility model, for each of the first anti-scratch components 2, the number of the first connecting rods 201 is 2.

[0061] For each of the second anti-scratch components 3, the number of the second connecting rods 301 can be determined as needed. Preferably, for each of the second anti-scratch components 3, there are multiple second connecting rods 301, which are spaced apart from each other along the circumference of the pile hole ring 101. Please refer to... Figure 1 and Figure 3 As shown, in a specific embodiment of this utility model, for each of the second anti-scratch components 3, the number of the second connecting rods 301 is 2.

[0062] The first roller pad 203 is located inside the first arc-shaped plate 202 and is rotatably connected to the first arc-shaped plate 202 around its axis. It can employ any suitable structure; please refer to [link / reference]. Figures 1-2 As shown, in a specific embodiment of the present invention, the first anti-scratch component 2 further includes a first fixed shaft 212. The first fixed shaft 212 is arranged along the axis of the first roller pad 203 and located on the inner side of the first arc plate 202. Both ends of the first fixed shaft 212 are connected to the first arc plate 202. The first roller pad 203 is rotatably sleeved on the middle part of the first fixed shaft 212 around the axis of the first roller pad 203.

[0063] The second roller pad 303 is located inside the second arc-shaped plate 302 and is rotatably connected to the second arc-shaped plate 302 around its axis. It can employ any suitable structure; please refer to [link / reference]. Figure 1 and Figure 3 As shown, in a specific embodiment of this utility model, the second anti-scratch component 3 further includes a second fixed shaft 312. The second fixed shaft 312 is arranged along the axis of the second roller pad 303 and located inside the second arc plate 302. Both ends of the second fixed shaft 312 are connected to the second arc plate 302. The second roller pad 303 is rotatably sleeved on the middle part of the second fixed shaft 312 around the axis of the second roller pad 303.

[0064] In use, the first anti-scratch component 2 and the second anti-scratch component 3 are placed into the pile hole, the pile hole ring 101 is placed at the edge of the pile hole opening, and the support rod 102 is pressed to insert the ground nail 103 into the ground, so that the control component of the protective layer of the rotary cast-in-place pile reinforcement cage is fixed at the pile hole opening. Then, the reinforcement cage 4 is lifted by a crane, and the lower end of the reinforcement cage 4 is placed into the pile hole ring 101. After that, the reinforcement cage 4 is lowered.

[0065] Please see Figure 4 and Figure 5 As shown, during the lowering of the reinforcing cage 4, the outer wall of the reinforcing cage 4 is always in contact with the first roller pad 203 and the second roller pad 303. The first roller pad 203, the first arc plate 202, the second roller pad 303, and the second arc plate 302 are all located between the reinforcing cage 4 and the wall of the pile hole. As the reinforcing cage 4 is lowered, the first roller pad 203 and the second roller pad 303 roll simultaneously until the reinforcing cage 4 is completely lowered into the pile hole. Then, the support rod 102 is lifted to separate the ground nail 103 from the ground. The control component for the protective layer of the rotary cast-in-place pile reinforcing cage is then removed from the opening of the pile hole. After that, the pouring operation is carried out. The concrete layer formed by the distance between the reinforcing cage 4 and the wall of the pile hole during the pouring process is the protective layer of the reinforcing cage.

[0066] When the first anti-scratch assembly 2 also includes a first upper clamping plate 204, a second upper clamping plate 205, a first upper adjusting bolt 206, a first upper adjusting nut 207, a first lower clamping plate 208, a second lower clamping plate 209, a first lower adjusting bolt 210, and a first lower adjusting nut 211, the following operations are performed before placing the first anti-scratch assembly 2 and the second anti-scratch assembly 3 into the pile hole: Place the pile hole ring 101 over the reinforcing cage 4, loosen the first upper adjusting nut 207 and the first lower adjusting nut 211, and then rotate the first connecting rod 201 to adjust... The positions of the first arc-shaped plate 202 and the first roller pad 203, along with the second arc-shaped plate 302 and the second roller pad 303, are adjusted so that the first roller pad 203 and the second roller pad 303 are both attached to the outer wall of the reinforcing cage 4. Then, the first upper adjusting nut 207 and the first lower adjusting nut 211 are tightened to fix the first connecting rod 201. Next, the protective layer control component of the rotary-drilled pile reinforcing cage is removed. Then, the first anti-scraping component 2 and the second anti-scraping component 3 are placed into the pile hole, and the aforementioned operations of fixing the support rod 102 and lowering the reinforcing cage 4 are performed. Normally, the second connecting rod 301 does not need to be adjusted; the positions of the second arc-shaped plate 302 and the second roller pad 303 can be adjusted independently because the upper and lower outer diameters of the reinforcing cage 4 are consistent.

[0067] Therefore, this utility model, by setting a first anti-scratching component and a second anti-scratching component, uses a support rod in conjunction with ground nails to fix the protective layer control component of the rotary drilling pile reinforcement cage at the opening of the pile hole. When the reinforcement cage is lowered, the first arc-shaped plate and the first roller pad, as well as the second arc-shaped plate and the second roller pad, form an isolation to prevent the reinforcement cage from contacting the hole wall and causing scratches on the hole wall. The rolling of the first roller pad and the second roller pad reduces the resistance encountered by the reinforcement cage during lowering. Furthermore, the first roller pad and the second roller pad, which are set at intervals between the first and second anti-scratching components, provide limiting support for the reinforcement cage, avoiding the instability of single-point limiting support. After the reinforcement cage is lowered, the protective layer control component of the rotary drilling pile reinforcement cage can be removed from the opening of the pile hole for easy reuse. If the position of the first connecting rod relative to the pile hole ring and the first arc plate is adjustable in a direction parallel to the tangent of the pile hole ring, the position of the first arc plate, the first roller pad, the second arc plate, and the second roller pad can also be adjusted by rotating the first connecting rod to adjust the fit of the first roller pad and the second roller pad with the outer wall of the reinforcing cage. This facilitates the adaptation to reinforcing cages of different outer diameters and improves the compatibility of the protective layer control components of the rotary cast-in-place pile reinforcing cage.

[0068] In summary, the protective layer control component for the rotary cast-in-place pile reinforcement cage of this utility model is set separately from the reinforcement cage, can be reused, is simple and convenient to use, and can also adjust the position of the first roller pad and the second roller pad according to the outer diameter of different reinforcement cages, which facilitates the use of the protective layer control component for the rotary cast-in-place pile reinforcement cage with different outer diameters and improves the compatibility of the protective layer control component for the rotary cast-in-place pile reinforcement cage.

[0069] In summary, the rotary drilling pile reinforcement cage protective layer control component of this utility model is simple and convenient to use, and can be reused, thereby improving construction efficiency and reducing construction costs. It has an ingenious design, simple structure, easy manufacturing, and low manufacturing cost, making it suitable for large-scale promotion and application.

[0070] Therefore, it is evident that the objective of this utility model has been fully and effectively achieved. The function and structural principles of this utility model have been demonstrated and explained in the embodiments. Without departing from the stated principles, any modifications can be made to the implementation methods. Therefore, this utility model includes all modified embodiments based on the spirit and scope of the claims.

Claims

1. A control component for the protective layer of the reinforcing cage in a rotary-drilled cast-in-place pile, characterized in that, Includes a top support frame, a first anti-scratch component, and a second anti-scratch component, wherein: The top support frame includes a pile hole ring, support rods, and ground nails. The pile hole ring is horizontally arranged, the support rods extend radially outward from the pile hole ring, and the ground nails are vertically arranged and downward. The ground nails are located below the support rods and connected to the support rods. There are multiple support rods, which are horizontally arranged around the pile hole ring at intervals. Each of the multiple support rods is equipped with a ground nail. The first anti-scratch assembly includes a first connecting rod, a first arc-shaped plate, and a first roller pad. The first arc-shaped plate is vertically arranged and arranged along the circumference of the pile hole ring and located below the pile hole ring. The first roller pad is vertically arranged and arranged radially along the circle containing the first arc-shaped plate. The first roller pad is located inside the first arc-shaped plate and is rotatably connected to the first arc-shaped plate around the axis of the first roller pad. The first connecting rod is vertically arranged and located between the pile hole ring and the first arc-shaped plate and connects the pile hole ring and the first arc-shaped plate respectively. The second anti-scratch assembly includes a second connecting rod, a second arc-shaped plate, and a second roller pad. The second arc-shaped plate is vertically arranged and circumferentially arranged along the pile hole ring and located below the first arc-shaped plate. The second roller pad is vertically arranged and radially arranged along the circle containing the second arc-shaped plate. The second roller pad is located inside the second arc-shaped plate and rotatably connected to the second arc-shaped plate around its axis. The second connecting rod is vertically arranged and located between the first arc-shaped plate and the second arc-shaped plate, and connects the first arc-shaped plate and the second arc-shaped plate respectively. The number of the first anti-scratch components is multiple, and the first arc-shaped plates of the multiple first anti-scratch components are arranged at intervals along the circumference of the pile hole ring. The number of the second anti-scratch components is the same as the number of the first anti-scratch components, and the second anti-scratch components are arranged in a one-to-one correspondence with the first anti-scratch components.

2. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, The number of support rods is four, namely a front support rod, a rear support rod, a left support rod, and a right support rod. The front support rod and the rear support rod are arranged along the front-to-back direction and are spaced apart from each other. The left support rod and the right support rod are arranged along the left-to-right direction and are spaced apart from each other. An arc-shaped rod is provided between the rear end of the front support rod and the right end of the left support rod, between the right end of the left support rod and the front end of the rear support rod, between the front end of the rear support rod and the left end of the right support rod, and between the left end of the right support rod and the rear end of the front support rod. All four arc-shaped rods are arranged along the circumference of the pile hole ring and are spaced apart from each other. The pile hole ring is formed by the four arc-shaped rods, the rear end of the front support rod, the right end of the left support rod, the front end of the rear support rod, and the left end of the right support rod. The first arc-shaped plate is located below the arc-shaped rod, and the first connecting rod is located between the arc-shaped rod and the first arc-shaped plate and connects the arc-shaped rod and the first arc-shaped plate respectively. The number of the first anti-scratch components is 4, and the 4 first anti-scratch components and the 4 arc-shaped rods are arranged in a one-to-one correspondence.

3. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, For each support rod, there are multiple ground spikes, which are spaced apart from each other along the length of the support rod.

4. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 3, characterized in that, For each of the support rods, the number of ground spikes is 3.

5. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, The first anti-scratch assembly further includes a first upper clamping plate, a second upper clamping plate, a first upper adjusting bolt, a first upper adjusting nut, a first lower clamping plate, a second lower clamping plate, a first lower adjusting bolt, and a first lower adjusting nut, wherein: The first upper adjusting bolt is located below the pile hole ring and is arranged in a direction parallel to the tangent of the pile hole ring. The first upper clamping plate and the second upper clamping plate are both arranged vertically and are both perpendicular to the first upper adjusting bolt. The first upper clamping plate and the second upper clamping plate are both located below the pile hole ring and are both connected to the pile hole ring. The upper end of the first connecting rod is located between the first upper clamping plate and the second upper clamping plate and abuts against the first upper clamping plate and the second upper clamping plate respectively. The first upper clamping plate and the second upper clamping plate are both located between the head of the first upper adjusting bolt and the first upper adjusting nut and abut against the head of the first upper adjusting bolt and the first upper adjusting nut respectively. The first upper clamping plate and the second upper clamping plate are sequentially passed through the middle part of the first upper adjusting bolt. The tail of the first upper adjusting bolt passes through and is threadedly engaged with the first upper adjusting nut. The first lower adjusting bolt is located below and parallel to the first upper adjusting bolt. The first lower clamping plate and the second lower clamping plate are both vertically arranged and perpendicular to the first lower adjusting bolt. The first lower clamping plate and the second lower clamping plate are both disposed on the first arc-shaped plate. The lower end of the first connecting rod is located between the first lower clamping plate and the second lower clamping plate and abuts against the first lower clamping plate and the second lower clamping plate respectively. The first lower clamping plate and the second lower clamping plate are both located between the head of the first lower adjusting bolt and the first lower adjusting nut and abut against the head of the first lower adjusting bolt and the first lower adjusting nut respectively. The first lower clamping plate and the second lower clamping plate are sequentially inserted through the middle of the first lower adjusting bolt. The tail of the first lower adjusting bolt is inserted through and threadedly engaged with the first lower adjusting nut.

6. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, The second anti-scratch assembly further includes a third upper clip, a fourth upper clip, a second upper adjusting bolt, a second upper adjusting nut, a third lower clip, a fourth lower clip, a second lower adjusting bolt, and a second lower adjusting nut, wherein: The second upper adjusting bolt is located below the first arc-shaped plate and is set along a direction parallel to the tangent of the pile hole ring. The third upper clamping plate and the fourth upper clamping plate are both set vertically and are perpendicular to the second upper adjusting bolt. The third upper clamping plate and the fourth upper clamping plate are both located below the first arc-shaped plate and are both connected to the first arc-shaped plate. The upper end of the second connecting rod is located between the third upper clamping plate and the fourth upper clamping plate and abuts against the third upper clamping plate and the fourth upper clamping plate respectively. The third upper clamping plate and the fourth upper clamping plate are both located between the head of the second upper adjusting bolt and the second upper adjusting nut and abut against the head of the second upper adjusting bolt and the second upper adjusting nut respectively. The third upper clamping plate and the fourth upper clamping plate are sequentially passed through the middle part of the second upper adjusting bolt. The tail of the second upper adjusting bolt passes through and is threadedly engaged with the second upper adjusting nut. The second lower adjusting bolt is located below and parallel to the second upper adjusting bolt. The third and fourth lower clamping plates are both vertically arranged and perpendicular to the second lower adjusting bolt. The third and fourth lower clamping plates are both set on the second arc-shaped plate. The lower end of the second connecting rod is located between the third and fourth lower clamping plates and abuts against them respectively. The third and fourth lower clamping plates are both located between the head of the second lower adjusting bolt and the second lower adjusting nut and abut against them respectively. The third and fourth lower clamping plates are sequentially inserted through the middle of the second lower adjusting bolt, and the tail of the second lower adjusting bolt is threaded and engaged with the second lower adjusting nut.

7. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, For each of the first anti-scratch components, there are multiple first connecting rods, which are spaced apart from each other along the circumference of the pile hole ring.

8. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 7, characterized in that, For each of the first scratch-resistant components, there are two first connecting rods.

9. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 1, characterized in that, For each of the second anti-scratch components, there are multiple second connecting rods, which are spaced apart from each other along the circumference of the pile hole ring.

10. The control component for the protective layer of the reinforcing cage of a rotary-drilled cast-in-place pile as described in claim 9, characterized in that, For each of the second scratch-resistant components, there are two second connecting rods.

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