Rotary excavating pile casing limiting device

Abstract

The utility model relates to the technical field of building construction, and discloses a rotary excavating pile casing limiting device which comprises an annular plate, a plurality of fixing assemblies and a plurality of adjusting bolts. The fixing assembly comprises fixing rods, gaskets and locking nuts, fixing holes are annularly and evenly distributed in the upper end face of the annular plate, the fixing rods are arranged in the fixing holes in a penetrating mode, external threads connected with the locking nuts are arranged on the side walls of the upper ends of the fixing rods, the locking nuts are located above the annular plate, and the annular plate is arranged on the annular plate. A diagonal plane is arranged at the lower end of the fixing rod, the gasket is arranged on the fixing rod in a sleeving mode and located between the locking nut and the annular plate, the axis of the adjusting bolt is perpendicular to the axis of the annular plate, and the adjusting bolt can abut against the side wall of the pile casing by rotating the adjusting bolt. The device has the advantages that when construction is carried out near a pile hole, the position of the pile casing is fixed, and inclination of a rotary excavating pile body during installation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a rotary pile casing limiting device. Background Art

[0002] At present, in the process of drilling pile holes for rotary drilling piles, when a pile hole is drilled, a casing needs to be driven into the pile hole to ensure the stability of the pile hole wall and prevent the hole wall from collapsing or collapsing. When excavation construction continues near the pile hole, the soil at the pile hole will become loose and the position of the casing will change, which may easily cause the rotary drilling pile body to tilt during installation, affecting the bearing capacity of the pile body. Utility Model Content

[0003] The utility model aims to provide a casing limiting device for rotary piles, which can fix the position of the casing when construction is carried out near the pile hole to avoid the tilting of the rotary pile body during installation.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a rotary pile casing limiting device, comprising an annular plate, a plurality of fixing components and a plurality of adjusting bolts;

[0005] The fixing assembly includes a fixing rod, a gasket and a locking nut. The upper end surface of the annular plate is evenly distributed with fixing holes in an annular shape, and the fixing rod is penetrated in each of the fixing holes. The upper end side wall of the fixing rod is provided with an external thread connected to the locking nut. The locking nut is located above the annular plate, and the lower end of the fixing rod is provided with a chamfered surface. The gasket is sleeved on the fixing rod and is located between the locking nut and the annular plate. A plurality of adjusting bolts are threadedly connected to the annular plate, and a plurality of adjusting bolts are evenly distributed around the axis of the annular plate. The axis of the adjusting bolt is perpendicular to the axis of the annular plate, and the adjusting bolt can be pressed against the side wall of the casing by rotating.

[0006] Furthermore, the upper end surface of the annular plate is evenly distributed with ear plates in an annular shape, and the ear plates are provided with threaded holes corresponding to the adjusting bolts.

[0007] Furthermore, the number of the adjusting bolts is n, and the angle between the axes of adjacent adjusting bolts is 360° / n.

[0008] Furthermore, the number of the fixing components is at least 3.

[0009] Furthermore, the ear plate is rectangular, and the ear plate is fixed to the annular plate by welding.

[0010] Furthermore, the fixing assembly also includes a spring washer, which is sleeved on the fixing rod and located between the gasket and the annular plate.

[0011] Furthermore, the fixing rod is made of a hollow tube.

[0012] Furthermore, the angle between the chamfered surface and the axis of the fixing rod is less than or equal to 45°.

[0013] Furthermore, the adjusting bolt includes a screw rod and a fastening nut, one end of the screw rod is against the side wall of the casing, and the other end of the screw rod is threadedly connected with the fastening nut.

[0014] Furthermore, the annular plate, the fixing rod and the adjusting bolt are all made of stainless steel.

[0015] Compared with the prior art, the present invention provides a rotary pile casing limiting device in an embodiment, and its beneficial effects are as follows: a fixing assembly comprises a fixing rod, a gasket and a locking nut; the end surface of the annular plate is evenly provided with fixing holes; the fixing rod is inserted into the fixing hole, and a chamfered surface is provided at the lower end of the fixing rod for easy insertion into the ground; an external thread is provided on the upper end side wall of the fixing rod; the fixing rod and the annular plate are fixed by using a locking nut; the gasket can increase the release area between the locking nut and the annular plate and improve the connection strength; a plurality of adjusting bolts are threadedly connected to the annular plate; the plurality of adjusting bolts are evenly distributed around the axis of the annular plate; the axis of the adjusting bolt is perpendicular to the axis of the annular plate; the position of the casing can be fixed by rotating the adjusting bolt against the side wall of the casing to avoid tilting of the rotary pile body during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a rotary pile casing limiting device according to an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an annular plate of a rotary pile casing limiting device according to an embodiment of the utility model;

[0018] In the figure, 1, annular plate; 11, fixing hole; 12, ear plate; 2, fixing assembly; 21, fixing rod; 22, gasket; 23, locking nut; 3, adjusting bolt: 31, screw rod; 32, fastening nut; a, casing. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices and elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1 As shown, a rotary pile casing a limiting device of a preferred embodiment of the utility model is used to fix the position of the casing a, including an annular plate 1, multiple fixing components 2 and multiple adjusting bolts 3, wherein the annular plate 1 is used for positioning when installing with the casing a, the annular plate 1 is sleeved outside the casing a, the multiple fixing components 2 are used to fix the annular plate 1 and the ground, and the multiple adjusting bolts 3 are used to fix the casing a. Specifically, the fixing component 2 includes a fixing rod 21, a gasket 22 and a locking nut 23, wherein the fixing rod 21 is used to be inserted into the soil, in order to facilitate fixing The rod 21 is installed and positioned. The upper end surface of the annular plate 1 is evenly distributed with fixing holes 11 in an annular shape. A fixing rod 21 is inserted into each fixing hole 11. In order to prevent the fixing rod 21 from moving in the vertical direction after being inserted into the ground, an external thread connected to a locking nut 23 is provided on the upper side wall of the fixing rod 21. The locking nut 23 is located above the annular plate 1. The gasket 22 is sleeved on the fixing rod 21 and is located between the locking nut 23 and the annular plate 1. After the fixing rod 21 is inserted into the specified ground depth, the locking nut 23 is tightened to prevent the fixing rod 21 from moving. Figure 1 , multiple adjusting bolts 3 are threadedly connected to the annular plate 1, and the multiple adjusting bolts 3 are evenly distributed around the axis of the annular plate 1, the axis of the adjusting bolts 3 is perpendicular to the axis of the annular plate 1, and the adjusting bolts 3 can be rotated to abut against the side wall of the casing a, thereby fixing the position of the casing a.

[0022] In some embodiments, in order to facilitate the threaded connection between the adjusting bolt 3 and the annular plate 1, refer to Figure 1 , Figure 2 , ear plates 12 are evenly distributed in an annular shape on the upper end surface of the annular plate 1, and threaded holes corresponding to the adjusting bolts 3 are opened on the ear plates 12. Further, in order to simplify the structure of the ear plates 12 and reduce the difficulty of fixing the ear plates 12 and the annular plate 1, the ear plates 12 are rectangular, and the ear plates 12 and the annular plate 1 are fixed by welding.

[0023] In some embodiments, in order to facilitate the fixing of the casing a, the adjusting bolts 3 are evenly distributed around the side wall of the casing a, that is, the angles between the axes of each adjusting bolt 3 are the same. In order to facilitate the determination of the size of the angle, the number of adjusting bolts 3 is defined as n, and the angle between the axes of adjacent adjusting bolts 3 is 360° / n. In this embodiment, the number of adjusting bolts 3 is 4, and the angle between the axes of adjacent adjusting bolts 3 is 90°. The fixing assembly 2 is used to fix the annular plate 1. In order to make the annular plate 1 uniformly stressed and maintain a certain fixing strength when fixing, the number of fixing assemblies 2 is at least 3, and in this embodiment, preferably 4. Furthermore, in order to prevent the locking nut 23 from loosening after being tightened, the fixing assembly 2 also includes a spring washer, which is sleeved on the fixing rod 21 and is located between the gasket 22 and the annular plate 1.

[0024] In some embodiments, in order to reduce the weight of the fixing rod 21, the fixing rod 21 is made of a hollow tube. The deeper the fixing rod 21 is inserted into the ground, the more securely the annular plate 1 can be fixed. Therefore, in order to facilitate insertion into the ground, a chamfered surface is provided at the lower end of the fixing rod 21. The smaller the angle between the chamfered surface and the axis of the fixing rod 21, the easier it is to insert into the ground. The angle between the chamfered surface and the axis of the fixing rod 21 is less than or equal to 45°.

[0025] In some embodiments, in order to facilitate the design of the adjusting bolt 3, the adjusting bolt 3 includes a screw rod 31 and a fastening nut 32. One end of the screw rod 31 is against the side wall of the casing a, and the other end of the screw rod 31 is threadedly connected with the fastening nut 32. The screw rod 31 is rotated so that the end of the screw rod 31 is against the side wall of the casing a, and the fastening nut 32 is tightened at the same time, so that the position of the screw rod 31 can be fixed, and the position of the casing a can be fixed. In this embodiment, in order to improve the overall structural strength of the limiting device, the annular plate 1, the fixing rod 21, and the adjusting bolt 3 are all made of stainless steel.

[0026] The working process of the utility model is as follows: firstly, the adjusting bolts 3 and the annular plate 1 are pre-installed, and then the annular plate 1 is sleeved outside the casing a, the annular plate 1 is fitted to the ground, the fixing rods 21 are driven into the fixing holes 11 of the annular plate 1, and the locking nuts 23 are tightened, and then the adjusting bolts 3 are rotated to make the adjusting bolts 3 press against the side wall of the casing a, so that the position of the casing a can be fixed.

[0027] In summary, the embodiment of the utility model provides a limiting device for a rotary pile casing a, wherein the fixing assembly 2 comprises a fixing rod 21, a gasket 22 and a locking nut 23. The end surface of the annular plate 1 is evenly distributed with fixing holes 11, the fixing rod 21 is inserted into the fixing hole 11, and a chamfered surface is provided at the lower end of the fixing rod 21 for easy insertion into the ground, an external thread is provided on the upper end side wall of the fixing rod 21, and the fixing rod 21 is fixed to the annular plate 1 using the locking nut 23. The gasket 22 can increase the release area between the locking nut 23 and the annular plate 1 and improve the connection strength. A plurality of adjusting bolts 3 are threadedly connected to the annular plate 1, and the plurality of adjusting bolts 3 are evenly distributed around the axis of the annular plate 1, and the axis of the adjusting bolt 3 is perpendicular to the axis of the annular plate 1. By rotating the adjusting bolt 3 against the side wall of the casing a, the position of the casing a can be fixed to prevent the rotary pile body from tilting during installation.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A rotary pile casing limiting device, characterized in that: It includes an annular plate, a plurality of fixing components and a plurality of adjusting bolts; The fixing assembly includes a fixing rod, a gasket and a locking nut. The upper end surface of the annular plate is evenly distributed with fixing holes in an annular shape, and the fixing rod is penetrated in each of the fixing holes. The upper end side wall of the fixing rod is provided with an external thread connected to the locking nut. The locking nut is located above the annular plate, and the lower end of the fixing rod is provided with a chamfered surface. The gasket is sleeved on the fixing rod and is located between the locking nut and the annular plate. A plurality of adjusting bolts are threadedly connected to the annular plate, and a plurality of adjusting bolts are evenly distributed around the axis of the annular plate. The axis of the adjusting bolt is perpendicular to the axis of the annular plate, and the adjusting bolt can be pressed against the side wall of the casing by rotating.

2. The rotary pile casing limiting device according to claim 1, characterized in that: The upper end surface of the annular plate is evenly distributed with ear plates in an annular shape, and the ear plates are provided with threaded holes corresponding to the adjusting bolts.

3. The rotary pile casing limiting device according to claim 1, characterized in that: The number of the adjusting bolts is n, and the angle between the axes of adjacent adjusting bolts is 360° / n.

4. The rotary pile casing limiting device according to claim 1, characterized in that: The number of the fixing components is at least 3.

5. The rotary pile casing limiting device according to claim 2, characterized in that: The ear plate is rectangular, and the ear plate is fixed to the annular plate by welding.

6. The rotary pile casing limiting device according to claim 1, characterized in that: The fixing assembly also includes an elastic washer, which is sleeved on the fixing rod and located between the gasket and the annular plate.

7. The rotary pile casing limiting device according to claim 1, characterized in that: The fixing rod is made of a hollow tube.

8. The rotary pile casing limiting device according to claim 1, characterized in that: The angle between the chamfered surface and the axis of the fixing rod is less than or equal to 45°.

9. The rotary pile casing limiting device according to claim 1, characterized in that: The adjusting bolt comprises a screw rod and a fastening nut. One end of the screw rod abuts against the side wall of the casing, and the other end of the screw rod is threadedly connected with the fastening nut.

10. The rotary pile casing limiting device according to claim 1, characterized in that: The annular plate, the fixing rod and the adjusting bolt are all made of stainless steel.

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