Installation and positioning structure of steel cage for rotary pile hole

Abstract

The present invention relates to the field of rotary pile construction equipment, and in particular to an installation and positioning structure of a rotary pile hole steel cage that can accurately realize accurate positioning of the steel cage after it is lowered into a rotary pile hole, comprising a rotary pile hole and a steel cage arranged in the rotary pile hole, a steel casing is sleeved on the upper part of the rotary pile hole, the steel casing is coaxially arranged with the rotary pile hole, and comprises a positioning mechanism, the positioning mechanism comprises a positioning rod and a positioning sleeper structure, the positioning rod is detachably arranged on the positioning sleeper structure, the positioning rod is connected to the steel casing; the positioning sleeper structure comprises an arc positioning end, and the arc surface of the arc positioning end matches the outer wall surface of the steel casing. The present invention is particularly suitable for use in the lowering construction of the steel cage of the rotary pile hole.

Description

Technical Field

[0001] The invention relates to the field of rotary pile construction equipment, in particular to an installation and positioning structure of a steel bar cage of a rotary pile hole. Background Art

[0002] A rotary pile generally refers to a pile type constructed by a rotary drilling rig. Its full name is a rotary bored pile, or simply a rotary pile in engineering. Since mechanical operations are used, the number of workers required is not high, which can save a lot of labor costs. The common rotary pile construction process is as follows: laying out the pile position, positioning the drilling rig, burying the casing, drilling into a hole, lifting the drill to unload the soil (including the transportation of slag), cleaning the hole for inspection, transporting and installing the steel cage, pouring concrete, and pulling the tube to form a pile. After the rotary pile is drilled, after the hole is cleaned and inspected, the next step is to install the steel cage to support the hole wall of the rotary pile hole. However, in the existing construction process, the installation and fixing techniques of the steel cage are relatively rough. When lowering the steel cage, the steel cage is adjusted only by the experience of the construction personnel to avoid deviation. When fixing the steel cage, only two sleepers are placed on both sides of the steel casing, and then the steel cage is temporarily fixed by steel bars, which makes the positioning of the steel cage prone to deviation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an installation and positioning structure for a steel cage of a rotary pile hole, which can accurately realize the accurate positioning of the steel cage after it is lowered into the rotary pile hole.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an installation and positioning structure of a steel cage of a rotary pile hole, comprising a rotary pile hole and a steel cage arranged in the rotary pile hole, a steel casing is sleeved on the upper part of the rotary pile hole, the steel casing is coaxially arranged with the rotary pile hole, and comprises a positioning mechanism, the positioning mechanism comprises a positioning rod and a positioning sleeper structure, the positioning rod is detachably arranged on the positioning sleeper structure, and the positioning rod is connected to the steel casing; the positioning sleeper structure comprises an arc positioning end, and the arc surface of the arc positioning end matches the outer wall surface of the steel casing.

[0005] Furthermore, there are two positioning sleeper structures, both ends of the positioning rod are respectively arranged on the positioning sleeper structures, and the steel casing is arranged in the middle section of the positioning rod.

[0006] Furthermore, the positioning sleeper structure includes a straight positioning end, and the positioning rod is arranged in a slot of the straight positioning end.

[0007] Furthermore, the slot is composed of a pair of limit blocks which are clamped and arranged on the linear positioning end, and the end of the positioning rod is arranged between the two limit blocks.

[0008] Furthermore, a limiting groove is provided at the straight positioning end of the positioning sleeper structure, and the limiting block is detachably arranged in the limiting groove.

[0009] Furthermore, the straight line positioning end is provided with a length scale, and the arc positioning end is provided with an angle scale.

[0010] Furthermore, there are two positioning rods, and the positioning rods and the straight positioning ends are arranged perpendicular to each other.

[0011] Furthermore, the side walls of the steel cage are evenly provided with positioning frames along the outer circumference of the steel cage.

[0012] Furthermore, the side walls of the reinforcement cage are evenly provided with positioning protection blocks along the outer circumference direction of the reinforcement cage.

[0013] Furthermore, the positioning rod is a positioning steel bar.

[0014] The beneficial effects of the present invention are as follows: in actual use, the arc surface of the circular arc positioning end of the positioning sleeper structure is closely attached to the outer wall surface of the steel casing. Since the arc surface and the outer wall surface of the steel casing match each other, the steel casing can be used as a positioning reference to find the accurate positioning position. On this basis, the position of the positioning rod on the positioning sleeper structure is also determined, so that the position of the steel cage on the positioning rod can be fixed. After the steel cage is lowered into the rotary pile hole, the position of the positioning rod can be used as a reference to ensure that the position of the steel cage in the vertical direction is stable and accurate. The present invention cleverly uses a steel casing coaxially arranged with the rotary pile hole as a positioning reference, thereby ensuring the accurate positioning of the steel cage. The present invention is particularly suitable for use in the lowering construction of the steel cage of the rotary pile hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of the present invention.

[0016] Figure 2 It is a top view of the present invention.

[0017] Figure 3 It is a schematic diagram of the positioning mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the straight line positioning end and the arc positioning end of the positioning mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the connection structure between the positioning mechanism and the steel cage of the present invention.

[0020] Figure 6 It is a schematic diagram of the positioning framework and positioning protection block of the steel cage of the present invention.

[0021] Marked in the figure are: steel cage 1, positioning skeleton 11, positioning protection block 12, rotary pile hole 111, positioning sleeper structure 2, arc positioning end 21, straight positioning end 22, limiting groove 221, limiting block 222, positioning rod 3, steel casing 4. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 6 The installation and positioning structure of the steel cage of the rotary pile hole shown includes a rotary pile hole 111 and a steel cage 1 arranged in the rotary pile hole 111. The upper part of the rotary pile hole 111 is sleeved with a steel casing 4, which is coaxially arranged with the rotary pile hole 111 and includes a positioning mechanism, which includes a positioning rod 3 and a positioning sleeper structure 2. The positioning rod 3 is detachably arranged on the positioning sleeper structure 2, and the positioning rod 3 is connected to the steel casing 4; the positioning sleeper structure 2 includes an arc positioning end 21, and the arc surface of the arc positioning end 21 matches the outer wall surface of the steel casing 4. Generally, the positioning rod 3 is a positioning steel bar.

[0024] In the existing construction process, the installation and fixing techniques of the steel cage 1 are relatively rough. When lowering the steel cage 1, the steel cage 1 is adjusted only by the experience of the construction personnel to avoid deviation. When fixing the steel cage 1, only two sleepers are placed on both sides of the steel casing 4, and then the steel cage 1 is temporarily fixed by steel bars, which leads to the problem that the positioning of the steel cage 1 is prone to deviation. When lowering the steel cage 4, the installation and positioning structure can make the steel cage 1 in the middle position of the rotary pile hole 111 through the positioning skeleton 11 and the positioning protection block 12, and there will be no deviation. When fixing the steel cage 1, a positioning mechanism with a positioning function is used instead of the existing ordinary long sleepers, so that the steel cage can be accurately positioned. The side wall of the above-mentioned steel cage 1 is evenly provided with a positioning skeleton 11 along the outer peripheral direction of the steel cage 1. Similarly, the side wall of the steel cage 1 is evenly provided with a positioning protection block 12 along the outer peripheral direction of the steel cage 1.

[0025] In order to achieve accurate positioning and ensure uniform force on both ends of the positioning rod 3, it is preferred that the positioning sleeper structure 2 is two, the two ends of the positioning rod 3 are respectively arranged on the positioning sleeper structure 2, and the steel casing 4 is arranged in the middle section of the positioning rod 3. Figure 2 As shown, the two ends of the positioning rod 3 are respectively arranged on the positioning sleeper structure 2 to ensure the balance of force. The steel casing 4 is arranged in the middle section of the positioning rod 3, which can also facilitate the operation below the casing 4.

[0026] In order to fix the position of the positioning rod 3, the positioning sleeper structure 2 preferably includes a linear positioning end 22, and the positioning rod 3 is arranged in a slot of the linear positioning end 22. It is further preferred that the slot is composed of a pair of limit blocks 222 that are clamped and arranged on the linear positioning end 22, and the end of the positioning rod 3 is arranged between the two limit blocks 222. Figure 4 As shown, the position of the limit block 222 can be adjusted according to actual needs, but once determined, it must be fixed on the straight positioning end 22 to ensure that the position of the positioning rod 3 is fixed. In order to facilitate the installation and removal of the limit block 222, it is preferred that the straight positioning end 22 of the positioning sleeper structure 2 is provided with a limit groove 221, and the limit block 222 is detachably arranged in the limit groove 221. Further, it is preferred that a length scale is provided on the straight positioning end 22, and an angle scale is provided on the arc positioning end 21, so as to ensure that the straight positioning end 22 and the arc positioning end 21 are accurately positioned. In actual settings, two positioning rods 3 can be selected, and the positioning rods 3 and the straight positioning end 22 are arranged perpendicular to each other.

[0027] Example

[0028] The installation and positioning structure of the steel cage of the rotary pile hole includes: a steel cage 1, a positioning sleeper structure 2 and a positioning rod 3, wherein the positioning rod 3 is a positioning steel bar, and the steel cage 1 is provided with a positioning skeleton 11 and a positioning protection block 12 around it, and the steel cage 1 is provided with a group of positioning skeletons 11 and a group of positioning protection blocks 12 at intervals from top to bottom, wherein the positioning skeleton 11 is a steel skeleton that is bent and convex outward, and is fixed to the steel cage 1 by welding. The positioning protection block 12 is in the shape of a round wheel, and is bound to the steel cage 1 by steel wire, and the positioning protection block 12 is a cement block. When the construction workers lower the steel cage 1, since there are positioning skeletons 11 and positioning protection blocks 12 around the steel cage 1, under the guidance of the positioning skeleton 11 and the positioning protection block 12, the steel cage 1 can always be in the middle position of the rotary pile hole, and such a setting can effectively prevent the steel cage 1 from being displaced.

[0029] The steel cage 1 is installed in the rotary drilled pile hole 111, and a steel casing 4 is provided on the top of the rotary drilled pile hole 111. Two positioning sleeper structures 2 are provided, which are placed on both sides of the steel casing 4 respectively. The positioning sleeper structure 2 consists of an arc positioning end 21 and a straight positioning end 22. The arc positioning end 21 is in an arc shape and rests on the steel casing 4, while the straight positioning end 22 is in a long strip shape and is arranged at the outer edge of the arc positioning end 21. At the same time, scale lines are provided on the arc positioning end 21 and the straight positioning end 22. The positioning steel bar passes through the steel cage 1, and both ends are pressed on the straight positioning ends 22 of the two positioning sleeper structures 2 respectively.

[0030] The arc positioning end 21 and the straight positioning end 22 are fixedly connected as an integrated structure, and the positioning sleeper structure 2 composed of the arc positioning end 21 and the straight positioning end 22 is an axisymmetric structure, and the inner diameter of the arc positioning end 21 matches the outer diameter of the steel casing 4. Therefore, when the construction personnel install the positioning sleeper structure 2, they rely on the steel casing 4 for positioning, and because the arc positioning end 21 is close to the steel casing 4, it is ensured that the straight positioning ends 22 located on both sides of the steel casing 4 are placed symmetrically with respect to the center of the steel casing 4, thus ensuring the position accuracy of the straight positioning ends 22, and when fixing the steel cage 1, the positioning steel bars are passed through the steel cage 1 and pressed on the straight positioning ends 22, and the steel cage 1 can be adjusted through the scale on the straight positioning ends 22 to be in the center position.

[0031] The straight positioning end 22 is higher than the arc positioning end 21, and the positioning steel bar is pressed on the straight positioning end 22. At the same time, the positioning steel bar is limited on both sides by the limit blocks 222. The limit blocks 222 can fix the position of the positioning steel bar to prevent the positioning steel bar from rolling and causing the position of the steel cage 1 to be offset.

[0032] The linear positioning end 22 is provided with a row of limiting grooves 221 along the scale line, and the limiting block 222 can be detachably plugged into the limiting groove 221. Different spacings during the manufacture of the steel cage 1 will cause the position of the positioning steel bar to change when the positioning steel bar is installed. Therefore, by providing the limiting groove 221, the position of the limiting block 222 can be adjusted so that it can be suitable for positioning steel bars placed in different positions.

[0033] Through the above-mentioned positioning structure, after the steel cage 1 is lowered into the rotary pile hole 111, the position of the steel cage 1 in the rotary pile hole 111 can be accurately positioned and fixed, thereby ensuring that the steel cage 1 is in an accurate position during subsequent construction, thereby ensuring the construction quality.

Claims

1. A mounting and positioning structure for a steel cage of a rotary-drilled pile hole, comprising a rotary-drilled pile hole (111) and a steel cage (1) arranged in the rotary-drilled pile hole (111), wherein a steel casing (4) is sleeved on the upper part of the rotary-drilled pile hole (111), wherein the steel casing (4) is coaxially arranged with the rotary-drilled pile hole (111), and wherein the positioning mechanism comprises a positioning rod (3) and a positioning sleeper structure (2), wherein the positioning rod (3) is detachably arranged on the positioning sleeper structure (2) The positioning rod (3) is connected to the steel casing (4); the positioning sleeper structure (2) is two, the two ends of the positioning rod (3) are respectively arranged on the positioning sleeper structure (2), the steel casing (4) is arranged in the middle section of the positioning rod (3), the positioning sleeper structure (2) includes an arc positioning end (21), the arc surface of the arc positioning end (21) matches the outer wall surface of the steel casing (4), and the positioning sleeper structure (2) includes a straight positioning end (22), Features: The arc positioning end (21) and the straight positioning end (22) are fixedly connected to form an integrated structure; the straight positioning end (22) is higher than the arc positioning end (21); the positioning rod (3) is arranged in a slot on the straight positioning end (22); a length scale is arranged on the straight positioning end (22); and an angle scale is arranged on the arc positioning end (21); the arc positioning end (21) is arranged in close contact with the steel casing (4), thereby ensuring that the straight positioning end (22) is symmetrically placed with respect to the center of the steel casing (4).

2. The installation and positioning structure of the rotary pile hole reinforcement cage according to claim 1, Features: The clamping groove is composed of a pair of limit blocks (222) clamped on the linear positioning end (22), and the end of the positioning rod (3) is arranged between the two limit blocks (222).

3. The installation and positioning structure of the rotary pile hole reinforcement cage according to claim 2, Features: The linear positioning end (22) of the positioning sleeper structure (2) is provided with a limiting groove (221), and the limiting block (222) is detachably arranged in the limiting groove (221).

4. The installation and positioning structure of the rotary pile hole reinforcement cage according to claim 1, Features: There are two positioning rods (3), and the positioning rods (3) and the straight positioning ends (22) are arranged perpendicular to each other.

5. The installation and positioning structure of the steel cage for rotary drilling pile holes as claimed in claim 1, Features: The side walls of the steel cage (1) are evenly provided with positioning frames (11) along the outer circumference of the steel cage (1).

6. The installation and positioning structure of the steel cage for rotary drilling pile holes as claimed in claim 5, Features: Positioning protection blocks (12) are evenly arranged on the side walls of the reinforcement cage (1) along the outer circumference direction of the reinforcement cage (1).

7. The installation and positioning structure of the steel cage for rotary drilling pile holes according to claim 1, Features: The positioning rod (3) is a positioning steel bar.

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