Pile-anchor conversion piece for spiral anchor composite pile

Abstract

The utility model relates to a pile anchor conversion piece for a spiral anchor composite pile, the top of a spiral anchor is fixedly connected with a fixed disc, a plurality of preformed holes are arranged on the fixed disc, the bottom of a connecting rod of a preformed pile is provided with an external thread, the pile anchor conversion piece comprises a connecting disc and a connecting pipe fixedly connected on the connecting disc, and the connecting pipe is provided with a plurality of preformed holes. The connecting pipe is in threaded connection with the bottom of the connecting rod, the bottom of the connecting disc is fixedly connected with a plurality of vertical fixing inserting rods, and the fixing inserting rods are inserted into the preformed holes in a one-to-one correspondence mode. The connecting pipe and the connecting rod of the piled anchor conversion piece are in threaded connection, the connecting disc of the piled anchor conversion piece is inserted into the reserved hole of the spiral anchor fixing disc through the fixing inserting rod, and connection between the piled anchor conversion piece and the spiral anchor is achieved. The connecting rod can be rapidly connected with the spiral anchor through the pile anchor conversion piece, when the connecting rod needs to be taken down, the fixing insertion rod and the reserved hole are directly separated, the connecting rod can be taken out conveniently, construction convenience is improved, the repeated utilization rate of the connecting rod is improved, and construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of precast concrete piles, in particular to a pile anchor conversion piece for a screw anchor composite pile. Background Art

[0002] With the rapid development of power lines, new energy power lines and the communication industry in recent years, the number of transmission line towers, single-pole towers and signal tower base stations has increased. Their foundations are mostly cast-in-place foundations, such as excavated stepped foundations, cast-in-place pile foundations, etc. The construction methods require on-site excavation, suspension holes, formwork support, etc. The construction time is long, the floor area is large, and it causes pollution to the site. To solve this problem, the prior art has improved a process of screw anchor composite piles. This process uses a rotary drilling rig to first screw a screw anchor into the pile foundation hole, and then pour concrete into the pile foundation hole to form an integral structure with the screw anchor and the concrete pile. This can not only reduce the drilling depth, but also improve the uplift resistance of the pile body. The construction is convenient and the construction period is greatly shortened.

[0003] When the rotary drilling rig in the prior art screws the screw anchor, the rotary end of the rotary drilling rig is threadedly connected to the upper end of the screw anchor through a connecting rod, so as to drive the rotation of the screw anchor into the deep soil layer. At present, the upper end of the screw anchor is provided with internal thread screw threads, and the lower end of the connecting rod is provided with external threads. The screw anchor and the connecting rod are connected by threads. Since the connecting rod drives the screw anchor to rotate, the thread teeth at the connection between the connecting rod and the screw anchor are affected by external forces, and the thread teeth are prone to dislocation or even slipping, resulting in difficulty in disassembling and detaching the connecting rod and the screw anchor. When collecting the connecting rod, there is often a situation where the connecting rod cannot be removed, and the connecting rod can only be discarded in the pile foundation hole, which not only causes inconvenience in construction but also results in waste of the connecting rod and increases the cost. Therefore, in order to facilitate the installation and construction of the screw anchor, our company has developed a pile anchor conversion piece to facilitate the disassembly and assembly connection between the connecting rod and the screw anchor, improve the construction convenience. And the pile anchor conversion piece and the connecting rod can be reused, reducing the construction cost. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pile anchor conversion piece to facilitate the disassembly and assembly of the connecting rod and the screw anchor and improve the construction convenience. And the pile anchor conversion piece and the connecting rod can be reused, reducing the construction cost.

[0005] The utility model is realized by the following technical solutions. A pile anchor conversion piece for a screw anchor composite pile, a fixing plate is fixedly connected to the top of the screw anchor, a plurality of reserved holes are opened on the fixing plate, the upper end of the screw anchor is connected to a connecting rod through the pile anchor conversion piece, the pile anchor conversion piece includes a connecting plate and a connecting pipe fixedly connected to the connecting plate, the connecting pipe is threadedly connected to the bottom of the connecting rod, and a plurality of vertical fixing insertion rods are fixedly connected to the bottom of the connecting plate, and the plurality of fixing insertion rods are respectively inserted into the plurality of reserved holes in a one-to-one correspondence.

[0006] In this solution, the connecting pipe and the connecting rod of the pile-anchor conversion piece are threadedly connected. The connecting plate of the pile-anchor conversion piece is inserted into the reserved hole of the fixed plate of the screw anchor through the fixed insertion rod, realizing the connection between the connecting plate and the screw anchor. The connecting rod can be quickly connected to the screw anchor through the pile-anchor conversion piece. When the connecting rod needs to be removed, directly separating the fixed insertion rod from the reserved hole is sufficient, facilitating the removal of the connecting rod, improving the construction convenience, increasing the reusable rate of the connecting rod, and reducing the construction cost.

[0007] As an optimization, an external thread is provided at the bottom of the connecting rod, and an internal thread adapted to the external thread of the connecting rod is provided on the inner wall of the connecting pipe. In this optimized solution, the connecting rod and the connecting pipe are screwed together through the internal and external threads.

[0008] As an optimization, a transverse pin hole is provided on the connecting pipe. The pin hole sequentially penetrates the connecting pipe and the connecting rod, and a pin is inserted into the pin hole. This optimized solution forms a secondary connection between the connecting pipe and the connecting rod, improving the connection strength between the connecting pipe and the connecting rod. At the same time, through the limitation of the pin, when the connecting rod rotates, the thread teeth at the threaded connection of the connecting pipe and the connecting rod can be protected from being damaged by external forces, facilitating the separation of the connecting rod and the connecting pipe, and further improving the use convenience.

[0009] As an optimization, two pin holes are provided on the connecting pipe, and the penetration directions of the two pin holes are perpendicular to each other. This optimized solution further improves the connection stability between the connecting pipe and the connecting rod.

[0010] As an optimization, the bottom of the fixed insertion rod is conical. This optimized solution facilitates the insertion of the fixed insertion rod into the reserved hole.

[0011] As an optimization, a plurality of rib plates are fixedly connected between the connecting pipe and the connecting plate, and the plurality of rib plates are evenly distributed along the circumferential direction of the connecting pipe. This optimized solution enhances the structural strength between the connecting pipe and the connecting plate.

[0012] The beneficial effects of the present utility model are as follows: The connecting rod and the screw anchor are connected through the pile-anchor conversion piece. The connecting plate of the pile-anchor conversion piece is inserted into the reserved hole of the screw anchor through the fixed insertion rod, and the disassembly and assembly are convenient. When the connecting rod and the screw anchor are separated, directly separating the fixed insertion rod from the reserved hole is sufficient, facilitating the removal of the connecting rod, improving the construction convenience, increasing the reusable rate of the connecting rod, and reducing the construction cost.

[0013] The connecting rod is threadedly connected to the connecting pipe of the pile-anchor conversion piece and is secondarily connected through a pin, improving the connection strength and stability between the two. And through the limitation of the pin, when the connecting rod rotates, the thread teeth at the connection can be protected from being damaged by external forces, facilitating the separation of the connecting rod and the connecting pipe, and further improving the use convenience. Description of the Drawings

[0014] Figure 1This is the front view of the utility model;

[0015] Figure 2 This is the top view of the utility model;

[0016] Figure 3 It is a schematic diagram of the connection state of the pile - anchor conversion part, connecting rod and screw anchor;

[0017] As shown in the figure:

[0018] 1. Connection plate, 2. Connection pipe, 3. Pin hole, 4. Pin, 5. Fixed insertion rod, 6. Rib plate, 7. Screw anchor, 8. Fixed plate, 9. Connecting rod. Specific implementation method

[0019] In the existing technology of screw - anchor composite piles, the screw anchor is screwed into the pile - body hole by a rotary drilling rig. During construction, the rotary end of the rotary drilling rig is connected to the screw anchor through a connecting rod, so as to drive the rotation of the screw anchor into the deep soil layer. When the screwing - in depth of the screw anchor 7 is in place, the connecting rod 9 and the screw anchor 7 are disengaged. To facilitate the connection and disconnection of the screw anchor 7 and the connecting rod 9, our company has developed a pile - anchor conversion part, which is convenient for the connection and disconnection of the connecting rod and the screw anchor, easy to use, improves the reusable rate of the connecting rod, and reduces the construction cost.

[0020] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific implementation methods.

[0021] As Figures 1 to 3 shown, a pile - anchor conversion part for screw - anchor composite piles, the top of the screw anchor 7 is fixedly connected with a fixed plate 8, and a plurality of reserved holes are opened on the fixed plate 8. In this embodiment, four reserved holes are evenly distributed along the circumferential direction of the fixed plate 8. The upper end of the screw anchor 7 is connected to the connecting rod 9 through the pile - anchor conversion part, and the bottom of the connecting rod 9 is provided with external thread.

[0022] The pile - anchor conversion part includes a connection plate 1 and a connection pipe 2 fixedly connected to the connection plate 1. The connection pipe 2 is thread - connected to the bottom of the connecting rod 9. A plurality of vertical fixed insertion rods 5 are fixedly connected to the bottom of the connection plate 1, and the plurality of fixed insertion rods 5 are respectively inserted into the plurality of reserved holes one by one.

[0023] Specifically, the connection pipe 2 is vertically arranged and fixedly connected to the center of the connection plate 1. The inner wall of the connection pipe 2 is provided with internal thread adapted to the external thread at the bottom of the connecting rod 9, and the connecting rod 9 is thread - installed in the connection pipe 2.

[0024] Two horizontally - extending pin holes 3 are opened on the connection pipe 2. The pin holes 3 penetrate through the connection pipe 2 and the connecting rod 9 in sequence, and pins 4 are inserted into the pin holes 3. In this embodiment, the two pin holes 3 are distributed up and down and the penetration directions of the two pin holes are perpendicular to each other.

[0025] Specifically, four fixing pins 5 are evenly distributed along the circumference at the bottom of the connection plate 1 in this embodiment. The circumferential radii of the four fixing pins 5 are the same as those of the four reserved holes on the fixing plate 8, so that the four fixing pins can be conveniently inserted into the four reserved holes respectively. The bottom of the fixing pin 5 is conical.

[0026] In this embodiment, a plurality of rib plates 6 are fixedly connected between the connecting pipe 2 and the connection plate 1, and the plurality of rib plates 6 are evenly distributed along the circumference of the connecting pipe 2. Specifically, four rib plates 6 are fixedly connected to the outer wall of the connecting pipe 2, and the bottoms of the four rib plates 6 are fixedly connected to the top of the connection plate 1, so as to enhance the structural strength of the connecting pipe and the connection plate.

[0027] Working principle: During construction, first vertically position the screw anchor into the underground pile body hole, then thread the connecting pipe 2 of the conversion part with the connecting rod 9, and then pass the pin 4 through the pin holes 3 of the connecting pipe and the connecting rod, so as to secondarily connect and fasten the connecting rod 9 and the connecting pipe 2, and complete the connection of the connecting rod and the pile anchor conversion part. Drive the pile anchor conversion part into the underground pile body hole through the connecting rod, so that the fixing pins 5 at the bottom of the pile anchor conversion part are inserted into the reserved holes on the fixing plate 8 of the screw anchor, that is, complete the connection of the pile anchor conversion part and the screw anchor. During construction, the rotary drilling rig drives the screw anchor 7 to rotate in. When the screw anchor rotates to the required depth, lift the connecting rod 9 upward, and the pile anchor conversion part can be separated from the fixing plate 8, which is convenient to use and greatly improves the reuse rate of the connecting rod.

[0028] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted the existing technology, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations on the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also belong to the protection scope of the claims of the present invention.

Claims

1. A pile-anchor conversion member for a spiral anchor composite pile, characterized in that: A fixing plate (8) is fixedly connected to the top of the spiral anchor (7), and a plurality of reserved holes are formed on the fixing plate. The upper end of the spiral anchor (7) is connected to a connecting rod (9) via a pile anchor conversion member. The pile anchor conversion member comprises a connecting plate (1) and a connecting pipe (2) fixedly connected to the connecting plate. The connecting pipe (2) is threadedly connected to the bottom of the connecting rod (9). A plurality of vertical fixing plug rods (5) are fixedly connected to the bottom of the connecting plate (1). The plurality of fixing plug rods are inserted into the plurality of reserved holes in a one-to-one correspondence.

2. A pile-anchor conversion member for a spiral anchor composite pile according to claim 1, characterized in that: The bottom of the connecting rod (9) is provided with an external thread, and the inner wall of the connecting pipe (2) is provided with an internal thread that matches the external thread of the connecting rod.

3. The pile-anchor conversion member for a spiral anchor composite pile according to claim 1, characterized in that: The connecting pipe (2) is provided with a transverse nail hole (3), the nail hole passes through the connecting pipe and the connecting rod, and a pin (4) is inserted into the nail hole (3).

4. The pile-anchor conversion member for a spiral anchor composite pile according to claim 3, characterized in that: The connecting pipe (2) is provided with two nail penetration holes (3), and the penetration directions of the two nail penetration holes are perpendicular to each other.

5. The pile-anchor conversion member for a spiral anchor composite pile according to claim 1, characterized in that: The bottom of the fixed insertion rod (5) is conical.

6. The pile-anchor conversion member for a spiral anchor composite pile according to claim 1, characterized in that: A plurality of rib plates (6) are fixedly connected between the connecting pipe (2) and the connecting plate (1), and the plurality of rib plates are evenly distributed along the circumference of the connecting pipe.

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