Auxiliary device for screw pile driving

Abstract

The utility model provides a kind of for spiral pile piling auxiliary device, including drive cannon head, the lower part of drive cannon head is placed with sleeve, the inside movable joint of drive cannon head and sleeve is connected with connecting bolt, the outside of connecting bolt is connected with connecting nut, the lower part of drive cannon head is fixedly connected with spiral pile.The utility model is equipped with sleeve, it is favorable to improve engineering quality and reduce loss, by the connection of first flange plate and second flange plate, so that drive cannon head can be with sleeve on the same axis, while the spiral pile inserted into sleeve can be with sleeve on the same axis, further so that drive cannon head and spiral pile can be on the same axis, it is convenient to ensure the precision of vertical to improve engineering quality, under the action of guide slot, it is more quickly installed, after fixing, locking mechanism can be axially locked to fixed bolt, it is convenient to disperse stress to reduce loss.

Description

Technical Field

[0001] This utility model relates to the technical field of helical pile driving equipment, and in particular to an auxiliary device for helical pile driving. Background Technology

[0002] Spiral pile driving is a foundation treatment method that uses a rotating method to drill a pile body with spiral blades into the ground to form a pile foundation. Because it is a rotary drilling rather than hammering, it has very little impact on surrounding buildings and the environment, making it particularly suitable for construction in urban areas, near existing buildings, or in areas sensitive to vibration.

[0003] In current helical pile driving operations, the common practice is to directly insert the drill bit into the diameter of the helical pile and use bolts to hold it in place at the through-hole position for rotational pile driving. Due to the small contact area between the drill bit and the diameter of the helical pile, it is difficult to accurately ensure the verticality of the pile during the pile driving process, which can easily affect the overall project quality. In addition, the bolts are subjected to large shear and torsional forces during use, resulting in serious wear and tear on the bolt materials. This not only increases construction costs but also requires frequent bolt replacements, reducing construction efficiency. Therefore, auxiliary devices for helical pile driving are provided. Utility Model Content

[0004] In view of this, the present invention provides an auxiliary device for driving helical piles, and the main technical problem to be solved is: to solve the problems of poor vertical accuracy of the pile body and serious bolt wear.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary device for driving helical piles, comprising a drive head, a sleeve placed at the lower part of the drive head, a connecting bolt movably connected to the drive head and the sleeve, a connecting nut threadedly connected to the outer side of the connecting bolt, a helical pile fixedly connected to the lower part of the drive head, the sleeve including a second flange movably connected to the lower part of the drive head, a second through hole provided inside the second flange, a cylinder fixedly connected to the inner side of the second flange, a sliding hole provided inside the cylinder, a guide groove provided at the lower part of the cylinder, and a locking mechanism fixedly connected to the inner side of the cylinder.

[0006] Furthermore, the driving gun head includes a gun head body, a first flange is fixedly connected to the upper outer side of the gun head body, the first flange has a first through hole inside, and a connecting groove is provided on the lower outer side of the gun head body.

[0007] Furthermore, the locking mechanism includes a connecting plate fixedly connected to the inner side of the cylinder, a sleeve fixedly connected to the side of the connecting plate near the center of the cylinder, a movable column provided inside the sleeve, a spring fixedly connected between the sleeve and the movable column, a locking head fixedly connected to the lower part of the movable column, and a connecting pin fixedly connected to the outer side of the movable column.

[0008] Furthermore, the helical pile includes a pile body fixedly connected to the lower part of the drive gun head, the top of the pile body is provided with a placement groove, the edge of the top of the pile body is provided with an insertion port, and the upper part of the pile body is threadedly connected with the placement groove.

[0009] Furthermore, an annular groove is provided on the outer side of the placement slot, and the cross-section of the annular groove is a semi-circular structure.

[0010] Furthermore, the locking head has a hemispherical structure.

[0011] By employing the above technical solution, the auxiliary device for helical pile driving of this utility model has at least the following beneficial effects:

[0012] Compared with existing technologies, this auxiliary device for helical pile driving, by incorporating a sleeve, improves project quality and reduces losses. Connecting bolts and nuts, via a first and second flange, allow the drive head to be fixed to the sleeve and aligned on the same axis. The helical pile is then inserted into the sleeve, with the outer diameter of the pile matching the inner diameter of the sleeve, ensuring the inserted helical pile and sleeve are aligned on the same axis. This, in turn, aligns the drive head and the helical pile on the same axis, facilitating vertical accuracy and improving project quality. Furthermore, the guide groove facilitates faster installation of the helical pile during insertion. Tightening the fixing bolts, a spring allows the locking head to enter the annular groove for axial locking, ensuring greater stability and thus better helical pile fixation. This also helps distribute shear and torsional forces on the fixing bolts, reducing losses. Pushing the connecting pin upwards moves the moving column, causing the locking head to disengage from the annular groove, allowing the fixing bolts to be removed and the helical pile to be taken off for easy disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the auxiliary device for helical pile driving proposed in this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of the drive gun head of the auxiliary device for helical pile driving proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the sleeve of the auxiliary device for helical pile driving proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the locking mechanism of the auxiliary device for helical pile driving proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the spiral pile for the auxiliary device for spiral pile driving proposed in this utility model;

[0018] Figure 6 This is a schematic diagram of the overall structure of the fixing bolts of the auxiliary device for helical pile driving proposed in this utility model.

[0019] In the diagram: 1. Drive gun head; 101. Gun head body; 102. First flange; 103. First through hole; 104. Connecting groove; 2. Sleeve; 201. Cylinder body; 202. Sliding hole; 203. Second flange; 204. Second through hole; 205. Locking mechanism; 2051. Sleeve; 2052. Spring; 2053. Connecting plate; 2054. Moving column; 2055. Connecting pin; 2056. Locking head; 206. Guide groove; 3. Helical pile; 301. Pile body; 302. Socket; 303. Fixing bolt; 304. Placement groove; 305. Annular groove; 4. Connecting bolt; 5. Connecting nut. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "front", "rear", "upper", "lower", 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Reference Figure 1-6 The auxiliary device for helical pile driving provided by this utility model includes a drive head 1, a sleeve 2 placed at the lower part of the drive head 1, a connecting bolt 4 movably connected between the drive head 1 and the sleeve 2, a connecting nut 5 threadedly connected to the outer side of the connecting bolt 4, a helical pile 3 fixedly connected to the lower part of the drive head 1, the sleeve 2 including a second flange 203 movably connected to the lower part of the drive head 1, a second through hole 204 provided inside the second flange 203, a cylinder 201 fixedly connected to the inner side of the second flange 203, a sliding hole 202 provided inside the cylinder 201 for the passage and movement of the connecting pin 2055, a guide groove 206 provided at the lower part of the cylinder 201 for guiding the position of the helical pile 3, and a locking mechanism 205 fixedly connected to the inner side of the cylinder 201 for axial locking of the fixing bolt 303.

[0024] The drive head 1 includes a head body 101. A first flange 102 is fixedly connected to the upper outer side of the head body 101. A second flange 203 has the same diameter as the first flange 102, ensuring that the head body 101 and the cylinder 201 are on the same axis after the second flange 203 is connected to the first flange 102. A first through hole 103 is provided inside the first flange 102. A connecting groove 104 is provided on the lower outer side of the head body 101. The connecting groove 104 is used for the insertion of the fixing bolt 303.

[0025] The locking mechanism 205 includes a connecting plate 2053 fixedly connected to the inner side of the cylinder 201. A sleeve 2051 is fixedly connected to the side of the connecting plate 2053 near the center of the cylinder 201. A movable column 2054 is provided inside the sleeve 2051. The movable column 2054 can move inside the sleeve 2051. A spring 2052 is fixedly connected between the sleeve 2051 and the movable column 2054. The spring 2052 is in a compressed state. A locking head 2056 is fixedly connected to the lower part of the movable column 2054. A connecting pin 2055 is fixedly connected to the outer side of the movable column 2054. Pushing the connecting pin 2055 can drive the movable column 2054 so that the locking head 2056 can move.

[0026] The spiral pile 3 includes a pile body 301 fixedly connected to the lower part of the drive head 1. The outer diameter of the pile body 301 is adapted to the inner diameter of the cylinder 201, so that the pile body 301 can be inserted into the cylinder 201 and the pile body 301 can be on the same axis as the cylinder 201, thereby making the pile body 301 and the head body 101 on the same axis, which helps to ensure the verticality of the pile driving and improves the quality of the project. The top of the pile body 301 is provided with a placement groove 304, and the edge of the top of the pile body 301 is provided with a socket 302 for the passage of the moving column 2054 and the locking head 2056. The upper part of the inside of the pile body 301 is threadedly connected to the placement groove 304 for the placement of the head body 101.

[0027] The outer side of the placement slot 304 is provided with an annular slot 305. The cross-section of the annular slot 305 is a semi-circular structure. The annular semi-circular slot 305 facilitates the insertion of the locking head 2056.

[0028] The locking head 2056 has a hemispherical structure with a semi-circular cross-section, which is compatible with the annular groove 305 to ensure that the locking head 2056 can enter the annular groove 305 to lock the fixing bolt 303.

[0029] Working principle: During use, the gun head body 101 is inserted into the cylinder 201, aligning the first flange 102 with the second flange 203. The connecting bolt 4 is inserted, passing through the first through hole 103 and the second through hole 204, and the connecting nut 5 is tightened to ensure a tight connection between the first flange 102 and the second flange 203, guaranteeing that the gun head body 101 and the cylinder 201 are on the same axis. Then, the helical pile 3 is inserted into the sleeve 2. During insertion, rotation aligns the fixing bolt 303 with the guide groove 206, causing it to rise along the inclined surface of the guide groove 206. This continuous rise allows the fixing bolt 303 to reach the top of the guide groove 206, while the lower part of the gun head body 101 is inserted into the placement groove 304 of the pile body 301, aligning the fixing bolt 303 with the connecting groove 104. This facilitates precise screwing of the fixing bolt 303 into the connecting groove 104, accelerating installation efficiency. As the fixing bolt 303 is screwed in, the annular groove 305 aligns with the locking head 2056. Under the action of the spring 2052, the moving column 2054 drives the locking head 2056 into the annular groove 305, allowing the fixing bolt 303 to be axially locked, ensuring greater stability of the fixing bolt 303 and thus better stability of the helical pile 3. Then, the piling equipment can be started to drive the drive head 1 to rotate the sleeve 2. The rotation of the drive head and sleeve 2 drives the fixing bolt 303 to rotate for piling. The method of driving the drive head and sleeve 2 to drive the fixing bolt 303 simultaneously helps to disperse the shear force and torsional force on the fixing bolt 303, reducing wear. When disassembling, pushing the connecting pin 2055 upward will drive the moving column 2054 to make the locking head 2056 leave the annular groove 305, thereby allowing the fixing bolt 303 to be removed and the helical pile 3 to be removed for easy disassembly.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for driving helical piles, comprising a drive head (1), characterized in that: A sleeve (2) is placed at the lower part of the drive gun head (1). A connecting bolt (4) is movably connected inside the drive gun head (1) and the sleeve (2). A connecting nut (5) is threaded on the outside of the connecting bolt (4). A helical pile (3) is fixedly connected to the lower part of the drive gun head (1). The sleeve (2) includes a second flange (203) movably connected to the lower part of the drive gun head (1). A second through hole (204) is provided inside the second flange (203). A cylinder (201) is fixedly connected to the inner side of the second flange (203). A sliding hole (202) is provided inside the cylinder (201). A guide groove (206) is provided at the lower part of the cylinder (201). A locking mechanism (205) is fixedly connected to the inner side of the cylinder (201).

2. The auxiliary device for helical pile driving according to claim 1, characterized in that: The drive gun head (1) includes a gun head body (101), a first flange (102) is fixedly connected to the upper outer side of the gun head body (101), a first through hole (103) is provided inside the first flange (102), and a connecting groove (104) is provided on the lower outer side of the gun head body (101).

3. The auxiliary device for helical pile driving according to claim 1, characterized in that: The locking mechanism (205) includes a connecting plate (2053) fixedly connected to the inner side of the cylinder (201). A sleeve (2051) is fixedly connected to the side of the connecting plate (2053) near the center of the cylinder (201). A movable column (2054) is provided inside the sleeve (2051). A spring (2052) is fixedly connected between the sleeve (2051) and the movable column (2054). A locking head (2056) is fixedly connected to the lower part of the movable column (2054). A connecting pin (2055) is fixedly connected to the outer side of the movable column (2054).

4. The auxiliary device for helical pile driving according to claim 1, characterized in that: The spiral pile (3) includes a pile body (301) fixedly connected to the lower part of the drive gun head (1). The top of the pile body (301) is provided with a placement groove (304), and the edge of the top of the pile body (301) is provided with an insertion port (302). The upper part of the inside of the pile body (301) is threadedly connected with the placement groove (304).

5. The auxiliary device for helical pile driving according to claim 4, characterized in that: The outer side of the placement slot (304) is provided with an annular groove (305), and the cross-section of the annular groove (305) is a semi-circular structure.

6. The auxiliary device for helical pile driving according to claim 3, characterized in that: The locking head (2056) has a hemispherical structure.

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