Spiral ground pile with combined anti-loosening connecting structure

Abstract

The invention provides a spiral ground pile with a combined anti-loosening connecting structure, which comprises a spiral ground pile body, a spiral blade is arranged on the spiral ground pile body, a pile foot is arranged at the bottom of the spiral ground pile body, a flange plate is arranged at the upper end of the spiral ground pile body, and the spiral ground pile further comprises a twisting device. The twisting device comprises a supporting frame arranged in the spiral ground pile body, a sliding rail is arranged on the supporting frame, a rotating ball is arranged in the sliding rail, a rotating shaft is connected with a pull rod, and the upper end of the pull rod is connected with a twisting disc. The power device comprises an elastic piece arranged on the supporting frame, the upper end of the elastic piece is connected with a pressing rod, the upper end of the pressing rod is connected with a push rod, the upper end of the push rod is provided with a connecting end cover, the pressing rod is connected with a sleeve, and the sleeve is connected with a rotating cylinder; the locking device has the advantages that the locking of the connecting end cover can be realized, the operation is simple, and the automatic twisting is realized.

Description

Technical Field

[0001] This invention relates to the technical field of helical ground piles, and more specifically to a helical ground pile with a combined anti-loosening connection structure. Background Technology

[0002] With the rapid development of photovoltaic power generation, there are many types of photovoltaic support systems. Helical ground piles are the foundation and support points for these systems. Helical ground piles are simple to install, requiring minimal land disturbance and providing a support foundation while preserving the original land cover. There are various structural forms of helical ground piles, one of which is the flanged helical ground pile. During pile driving, a rotary joint needs to be installed on the machine. This joint is inserted into a pre-drilled hole in the flange, allowing the helical ground pile to rotate and be driven into the ground. This method is relatively simple, but the pre-drilled hole is generally arc-shaped, which can easily lead to loosening when connecting the end caps.

[0003] A patent publication number CN109356149B was found, entitled "A Self-Adjusting Helical Ground Screw," which specifically discloses a self-adjusting helical ground screw, including a ground screw body and a flange. The flange includes an upper plate and a lower plate. Both the upper and lower plates are provided with circular mounting holes. The top of the ground screw body has a mounting groove, and side grooves are provided on both sides of the groove opening. A drive rod is installed in the mounting groove, and the drive rod includes an upper rod and a lower rod. The end of the lower rod is provided with a slot for the upper rod to enter. A first spring is provided between the bottom end of the upper rod and the bottom of the slot. The top end of the upper rod movably penetrates the upper plate. A base plate is installed at the bottom of the lower rod, and the dimensions of the base plate are related to the mounting hole. The mounting groove is sized to fit the dimensions; a second spring is provided between the bottom of the base plate and the bottom of the mounting groove; a first gear is fixedly sleeved on the upper rod; a second gear is externally meshed with the first gear, and the second gear is provided with a connecting rod, which passes through the side groove and is fixedly connected to the lower plate; an annular rack is provided on the lower rod; a third gear, a bevel gear, a fourth gear, and a transmission rod are also installed in the mounting groove; the third gear includes a flat tooth portion and a bevel tooth portion, which are coaxially connected; the flat tooth portion meshes with the annular rack, and the bevel tooth portion meshes with the bevel gear; the bevel gear is coaxially connected to the transmission rod, and the upper end of the transmission rod is coaxially connected to the fourth gear; the fourth gear meshes with the first gear.

[0004] Analysis of the publicly available materials shows that automatic adjustment can be achieved during the installation process, but the structure is complex and not easy to lock, and loosening still occurs. Summary of the Invention

[0005] In view of this, the present invention provides a spiral ground pile with a combined anti-loosening connection structure, which can not only lock the connecting end cap, but also is simple to operate and automatically twists.

[0006] To address the aforementioned technical problems, this invention provides a helical pile with a combined anti-loosening connection structure, comprising a helical pile body, helical blades disposed on the helical pile body, a pile foot disposed at the bottom of the helical pile body, and a flange disposed at the upper end of the helical pile body, and further comprising... A torsion device, comprising a support frame disposed inside the helical pile body, a slide rail disposed on the support frame, a rotating ball disposed inside the slide rail, a pull rod connected to the rotating ball, and a torsion disc connected to the upper end of the pull rod; A power unit, comprising a spring plate mounted on a support frame, a pressure rod connected to the upper end of the spring plate, a push rod connected to the upper end of the pressure rod, a connecting end cap provided at the upper end of the push rod, a sleeve connected to the pressure rod, and a rotating cylinder connected to the sleeve. The torsion disc is disposed on the outer side of the rotating cylinder, and the torsion disc and the rotating cylinder are fixedly connected.

[0007] Furthermore, the support frame is horizontally arranged, and the upper end face of the support frame is provided with an arc-shaped groove. The upper end of the arc-shaped groove is provided with a notch, and the arc angle of the notch is less than 180 degrees. The rotating ball is arranged in the groove and can rotate in the groove. The upper end of the rotating ball is fixedly connected to the lower end face of the pull rod.

[0008] Furthermore, the upper end of the pull rod is provided with a cap, and the twisting disk is provided with a through hole. The pull rod passes through the through hole, and the cap at the upper end of the pull rod is positioned above the twisting disk. When the lower end of the pull rod is pushed outward, the pull rod pulls the twisting disk to rotate.

[0009] Furthermore, the spring sheet has an arc-shaped structure with an upward bulge in the middle, and is fixedly connected to the pressure rod. Both ends of the spring sheet are in contact with rotating balls.

[0010] Furthermore, the pressure rod and the sleeve are fixedly connected. A hole is provided at the bottom of the sleeve. After the pressure rod passes through the hole, its upper end contacts and connects to the push rod. The push rod is fixedly installed on the lower end face of the connecting end cover.

[0011] Furthermore, the connecting end cover is provided with several bolt holes for connecting brackets or trusses. The lower end of the connecting end cover is also provided with a telescopic frame. The telescopic frame includes a base, which is a hollow structure. The upper end of the base is provided with a step. A spring is provided inside the base. The spring is in contact with a telescopic plate. The telescopic plate is a plate-shaped structure. The telescopic plate is connected to a clip.

[0012] Furthermore, the card holder is disposed on the upper end face of the rotating cylinder. The card holder has a U-shaped structure and is used to accommodate the telescopic plate. The card holder can drive the telescopic plate to rotate.

[0013] Furthermore, a bearing is provided on the outer side of the rotating cylinder, and the bearing is fixed to the inner side of the helical pile body by a rod to support the rotating cylinder.

[0014] Furthermore, the flange is provided with a piling connection hole, which is an arc-shaped hole.

[0015] The beneficial effects of the above-described technical solution of the present invention are as follows: 1. After the rotating drum is driven to rotate by the torsion disc, the card holder will be driven to rotate. Since there is a telescopic plate inside the card holder, the telescopic plate drives the base to rotate, thereby realizing the rotation of the connecting end cover. This causes the inner ring bolt hole on the connecting end cover to rotate to the edge of the piling connection hole. At this time, the connecting end cover and the flange are connected by bolts, which can realize the locking of the connecting end cover.

[0016] 2. Simple operation and automatic twisting: The twisting disc can be twisted by manually pressing the connecting end cover downwards. Through design, the bolts can be inserted into the edge of the piling connection hole on the flange and the inner ring hole of the connecting end cover after the spring is straightened or crosses the horizontal plane. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure from another perspective; Figure 3 for Figure 2 A structural diagram from another perspective; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 for Figure 4 A structural diagram from another perspective; Figure 6 for Figure 5 Enlarged view of section B; Figure 7 This is a schematic diagram of the structure after removing the connecting end cap in section 4; Figure 8 for Figure 7 Enlarged view of the structure of section C; Figure 9 for Figure 7 A structural diagram from another perspective; Figure 10 for Figure 9 Schematic diagram of the structure of section D; Figure 11 This is a structural schematic diagram of the telescopic frame; In the diagram: 1. Helical pile body; 2. Helical blade; 3. Connecting end cap; 4. Cap body; 5. Pile foot; 6. Flange; 7. Support frame; 8. Spring; 9. Pressure rod; 10. Sleeve; 11. Rotating cylinder; 12. Bearing; 13. Bolt hole; 14. Tie rod; 15. Push rod; 16. Clip; 17. Telescopic frame; 18. Pile driving connection hole; 19. Slide rail; 20. Rotating ball; 21. Torsion disc; 22. Base; 23. Spring; 24. Telescopic plate; 25. Through hole. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 11 As shown: Example 1

[0020] A spiral pile with a combined anti-loosening connection structure includes a spiral pile body 1, spiral blades 2 disposed on the spiral pile body 1, pile feet 5 disposed at the bottom of the spiral pile body 1, and a flange 6 disposed at the upper end of the spiral pile body 1. It also includes a torsion device, which includes a support frame 7 disposed inside the spiral pile body 1, a slide rail 19 disposed on the support frame 7, a rotating ball 20 disposed within the slide rail 19, and a tie rod connected to the rotating ball 20. 14. The upper end of the pull rod 14 is connected to a torsion disc 21; the power device includes a spring plate 8 mounted on the support frame 7, the upper end of the spring plate 8 is connected to a pressure rod 9, the upper end of the pressure rod 9 is connected to a push rod 15, the upper end of the push rod 15 is provided with a connecting end cap 3, the pressure rod 9 is connected to a sleeve 10, and the sleeve 10 is connected to a rotating cylinder 11; the torsion disc 21 is mounted on the outer side of the rotating cylinder 11, and the torsion disc 21 and the rotating cylinder 11 are fixedly connected.

[0021] In this embodiment, the helical pile body 1 is a hollow, cylindrical structure. Helical blades 2 are welded and fixed to the outer surface of the helical pile body 1. A pile foot 5, which is conical in shape, is also provided at the bottom of the helical pile body 1 for easy and rapid driving into the ground. To facilitate the rotation of the helical pile body 1, a flange 6 is provided on the upper end face of the helical pile body 1, and several pile driving connection holes 18 are provided on the flange 6. The pile driving connection holes 18 are used to connect a rotating head. Generally, the rotating head is located at the end of an excavator, and the rotation of the helical pile body 1 into the ground is achieved through the rotating head on the excavator.

[0022] After the helical pile body 1 rotates to the predetermined position, in order to adapt to different supports or trusses, a connecting end cap 3 needs to be installed on the flange 6. Several bolt holes 13 are provided on the connecting end cap 3 to accommodate pre-drilled holes on the support. However, if the bolt holes 13 on the connecting end cap 3 are directly connected to the piling connection holes 18 on the flange 6 during installation, the connection will loosen. Therefore, this technology develops a torsion device. Specifically, the torsion device includes a fixed connection to the inner surface of the helical pile body 1. The support frame 7 is horizontally positioned, and a slide rail 19 is provided on the upper surface of the support frame 7. A rotating ball 20 is provided inside the slide rail 19, and the rotating ball 20 is connected to the pull rod 14. By moving the rotating ball 20 outward, the pull rod 14 can drive the torsion disk 21 to rotate. It should be noted that when the spring 8 does not deform, the position of the pull rod 14 is offset from the support frame 7 in the vertical direction. Under the pulling force of the pull rod 14, the pull rod 14 gradually becomes parallel to the support frame 7, thereby realizing the rotation of the torsion disk 21.

[0023] The deformation of the spring 8 is powered by a power unit, which includes a pressure rod 9 connected to the upper end of the spring 8. The upper end of the pressure rod 9 is connected to a push rod 15, which is a round rod structure protruding from the lower end face of the end cap 3.

[0024] In order to maintain the stable downward pressure of the pressure rod 9, the pressure rod 9 is connected to the sleeve 10, and the sleeve 10 is also connected to the rotating cylinder 11. While the rotating cylinder 11 rotates, the vertical direction of the rotating cylinder 11 can be kept unchanged. In addition, the rotating cylinder 11 also plays a supporting role for the sleeve 10. Example 2

[0025] The support frame 7 is horizontally arranged, and the upper end surface of the support frame 7 is provided with an arc-shaped groove. The upper end of the arc-shaped groove is provided with a notch, and the arc angle of the notch is less than 180 degrees. The rotating ball 20 is arranged in the groove and can rotate in the groove. The upper end of the rotating ball 20 is fixedly connected to the lower end surface of the pull rod 14.

[0026] Unlike the above embodiments, in this embodiment, the support frame 7 needs to be horizontally set, and both ends of the support frame 7 are fixedly connected to the inner side of the helical pile body 1, preferably by welding, which is simple and easy to operate. An arc-shaped groove is provided on the upper end surface of the support frame 7. The groove is a through groove structure, and a notch is provided at the upper end of the arc-shaped groove. The notch is used to form the tie rod 14. In order to keep the rotating ball 20 running in the groove, the notch is designed to be arc-shaped, and the arc angle is less than 180 degrees. The diameter of the rotating ball 20 is larger than the horizontal width of the notch. This method can ensure that the rotating ball 20 runs stably in the groove and will not derail. Example 3

[0027] The upper end of the pull rod 14 is provided with a cap 4, and the twisting disk 21 is provided with a through hole 25. The pull rod 14 passes through the through hole 25, and the cap 4 at the upper end of the pull rod 14 is positioned above the twisting disk 21. When the lower end of the pull rod 14 is pushed outward, the pull rod 14 pulls the twisting disk 21 to rotate.

[0028] Unlike the above embodiments, in this embodiment, the upper end of the pull rod 14 is provided with a cap 4. The diameter of the cap 4 is larger than the diameter of the pull rod 14, and the diameter of the cap 4 is also larger than the diameter of the through hole 25. The cap 4 needs to be positioned above the twisting disc 21. When the pull rod 14 is pulled downwards at an angle, the twisting disc 21 twists accordingly. Example 4

[0029] The spring piece 8 has an arc-shaped structure with an upward bulge in the middle, and is fixedly connected to the pressure rod 9. Both ends of the spring piece 8 are in contact with the rotating ball 20.

[0030] Unlike the above embodiments, in this embodiment, the spring piece 8 deforms under the action of external force, and the spring piece 8 maintains an arc-shaped structure and bulges upward when there is no external force. The upper end is fixedly connected to the pressure rod 9, and the two ends of the spring piece 8 are in contact with the rotating ball 20. Example 5

[0031] The pressure rod 9 and the sleeve 10 are fixedly connected. A hole is provided at the bottom of the sleeve 10. After the pressure rod 9 passes through the hole, its upper end contacts and connects to the push rod 15. The push rod 15 is fixedly installed on the lower end face of the connecting end cover 3.

[0032] Unlike the above embodiments, in this embodiment, the pressure rod 9 and the sleeve 10 are fixedly connected, that is, the pressure rod 9 can drive the sleeve 10 to move. A hole is opened at the bottom of the sleeve 10, and the pressure rod 9 is installed in the hole. The top of the pressure rod 9 contacts and connects to the push rod 15. The push rod 15 is fixedly installed on the lower end face of the connecting end cover 3. The function of the push rod 15 is to press down on the pressure rod 9 to move. Example 6

[0033] The connecting end cover 3 is provided with a plurality of bolt holes 13 for connecting brackets or trusses. The lower end of the connecting end cover 3 is also provided with a telescopic frame 17. The telescopic frame 17 includes a base 22, which is a hollow structure. A step is provided at the upper end of the base 22. A spring 23 is provided inside the base 22. The spring 23 is in contact with a telescopic plate 24. The telescopic plate 24 is a plate-shaped structure. The telescopic plate 24 is connected to a bracket 16.

[0034] Unlike the embodiments described above, in this embodiment, several bolt holes 13 are provided on the connecting end cap 3. Generally, a support or truss needs to be placed on the helical pile body 1, and the flange 6 is used to facilitate pile driving. After the helical pile body 1 is driven and buried, it only serves as a foundation, and a support still needs to be erected on the helical pile body 1. Bolt connections are generally preferred due to their ease of disassembly. However, the flange 6 structure in the prior art is not convenient for assembly and connection, and even if it can be assembled, it is prone to loosening. Due to these reasons, a separate connecting end cap 3 is needed to accommodate different supports or trusses. To facilitate the twisting of the twisting disc 21, a telescopic frame 17 is provided at the lower end of the connecting end cover 3. The telescopic frame 17 includes a base 22, which is fixedly connected to the lower end face of the connecting end cover 3. The base 22 has a step inside, and a telescopic plate 24 and a spring 23 are also provided inside the base 22. The telescopic plate 24 can extend and retract under the action of the spring 23. The design of the telescopic plate 24 is to facilitate its insertion into the bracket 16, which in turn drives the twisting of the connecting end cover 3. Example 7

[0035] The card holder 16 is disposed on the upper end face of the rotating cylinder 11. The card holder 16 has a U-shaped structure and is used to accommodate the telescopic plate 24. The card holder 16 can drive the telescopic plate 24 to rotate.

[0036] Unlike the above embodiments, in this embodiment, the card holder 16 is fixed on the upper end face of the rotating cylinder 11, has a U-shaped structure, and there are two of them. The card holder 16 works with the telescopic plate 24 to realize the twisting of the connecting end cover 3. Example 8

[0037] The outer side of the rotating cylinder 11 is provided with a bearing 12, which is fixed to the inner side of the helical pile body 1 by a rod to support the rotating cylinder 11.

[0038] Unlike the above embodiments, in this embodiment, in order to maintain the stability of the rotating cylinder 11, a bearing 12 is provided on the outer side of the rotating cylinder 11, and the bearing 12 is fixed to the inner side of the helical pile body 1 by a rod. Example 9

[0039] The flange 6 is provided with a piling connection hole 18, which is an arc-shaped hole.

[0040] Unlike the above embodiments, in this embodiment, a piling connection hole 18 is provided on the flange 6. The piling connection hole 18 is an arc-shaped hole, which is to facilitate cooperation with the rotating head on the excavator head. The rotating head has a structure of four claws, which are inserted into the piling connection hole 18 to drive the spiral pile body 1 to rotate.

[0041] The working method (or working principle) of this invention: In operation, the support frame 7 is installed on the helical pile body 1 in the factory, and the sleeve 10, rotating cylinder 11, tie rod 14, etc. are all assembled in the factory prefabrication process. After the spiral pile body 1 arrives at the construction site, an excavator with a rotating head is used for pile driving. The four claws on the rotating head are inserted into the pile driving connection holes 18 on the flange 6. The spiral pile body 1 is placed and pile driving is carried out by rotation. After the spiral pile body 1 is driven, the connecting end cover 3 is taken out. The telescopic plate 24 in the telescopic frame 17 at the lower end of the connecting end cover 3 is inserted into the clamp 16. At this time, the push rod 15 on the lower end face of the connecting end cover 3 contacts the pressure rod 9, and then pressure is applied to press the connecting end cover 3 downward. After the pressure rod 9 moves downward, the pressure rod 9 presses the spring piece 8, the spring piece 8 is deformed, and the spring piece 8 extends outward. The two ends of the spring piece 8 push the rotating ball 20 outward. At this time, the rotating ball 20 drives the pull rod 14 to rotate. The cap 4 set on the pull rod 14 pulls the torsion plate 21 to twist. The torsion plate 21 drives the rotating cylinder 11 to rotate.

[0042] After the rotating cylinder 11 rotates, it drives the card holder 16 to rotate. Since the card holder 16 contains a telescopic plate 24, the telescopic plate 24 drives the base 22 to rotate, thereby realizing the rotation of the connecting end cover 3. This causes the inner ring bolt hole 13 on the connecting end cover 3 to rotate to the edge of the piling connection hole 18. At this time, after the connecting end cover 3 and the flange 6 are connected by bolts, the loosening of the combined connection can be effectively prevented.

[0043] In this invention, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; 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 elements or an interaction between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A spiral pile with a combined anti-loosening connection structure, comprising a spiral pile body (1), wherein spiral blades (2) are provided on the spiral pile body (1), pile feet (5) are provided at the bottom of the spiral pile body (1), and a flange (6) is provided at the upper end of the spiral pile body (1), characterized in that: Also includes The torsion device includes a support frame (7) installed inside the helical pile body (1), a slide rail (19) is provided on the support frame (7), a rotating ball (20) is provided inside the slide rail (19), the rotating ball (20) is connected to a pull rod (14), and the upper end of the pull rod (14) is connected to a torsion disc (21). The power unit includes a spring plate (8) mounted on a support frame (7), a pressure rod (9) connected to the upper end of the spring plate (8), a push rod (15) connected to the upper end of the pressure rod (9), a connecting end cap (3) provided at the upper end of the push rod (15), a sleeve (10) connected to the pressure rod (9), and a rotating cylinder (11) connected to the sleeve (10). The torsion disc (21) is disposed on the outer side of the rotating cylinder (11), and the torsion disc (21) and the rotating cylinder (11) are fixedly connected.

2. A spiral ground pile with a combined anti-loosening connection structure according to claim 1, characterized in that: The support frame (7) is horizontally arranged. The upper end of the support frame (7) is provided with an arc-shaped groove. The upper end of the arc-shaped groove is provided with a notch. The arc angle of the notch is less than 180 degrees. The rotating ball (20) is arranged in the groove and can rotate in the groove. The upper end of the rotating ball (20) is fixedly connected to the lower end of the pull rod (14).

3. A spiral ground pile with a combined anti-loosening connection structure according to claim 2, characterized in that: The upper end of the pull rod (14) is provided with a cap (4), and the twisting disk (21) is provided with a through hole (25). The pull rod (14) passes through the through hole (25), and the cap (4) at the upper end of the pull rod (14) is positioned above the twisting disk (21). When the lower end of the pull rod (14) is pushed outward, the pull rod (14) pulls the twisting disk (21) to rotate.

4. A spiral ground pile with a combined anti-loosening connection structure according to claim 3, characterized in that: The spring piece (8) has an arc-shaped structure with an upward bulge in the middle and is fixedly connected to the pressure rod (9). Both ends of the spring piece (8) are in contact with the rotating ball (20).

5. A spiral ground pile with a combined anti-loosening connection structure according to claim 4, characterized in that: The pressure rod (9) and the sleeve (10) are fixedly connected. A hole is provided at the bottom of the sleeve (10). After the pressure rod (9) passes through the hole, its upper end contacts the push rod (15). The push rod (15) is fixedly set on the lower end face of the connecting end cover (3).

6. A spiral ground pile with a combined anti-loosening connection structure according to claim 5, characterized in that: The connecting end cap (3) is provided with a plurality of bolt holes (13) for connecting brackets or trusses. The lower end of the connecting end cap (3) is also provided with a telescopic frame (17). The telescopic frame (17) includes a base (22). The base (22) is a hollow structure. The upper end of the base (22) is provided with a step. The interior of the base (22) is provided with a spring (23). The spring (23) is in contact with a telescopic plate (24). The telescopic plate (24) is a plate-shaped structure. The telescopic plate (24) is connected to a bracket (16).

7. A spiral ground pile with a combined anti-loosening connection structure according to claim 6, characterized in that: The card holder (16) is located on the upper end face of the rotating cylinder (11). The card holder (16) has a U-shaped structure and is used to accommodate the telescopic plate (24). The card holder (16) can drive the telescopic plate (24) to rotate.

8. A spiral ground pile with a combined anti-loosening connection structure according to claim 7, characterized in that: The outer side of the rotating cylinder (11) is provided with a bearing (12), which is fixed to the inner side of the helical pile body (1) by a rod to support the rotating cylinder (11).

9. A spiral ground pile with a combined anti-loosening connection structure according to claim 8, characterized in that: The flange (6) is provided with a piling connection hole (18), which is an arc-shaped hole.

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