Hoop of photovoltaic support spiral ground pile

Abstract

The utility model discloses a hoop of a spiral ground pile of a photovoltaic support, and relates to the technical field of spiral ground pile construction of photovoltaic projects, the hoop comprises a spiral ground pile and a pile cap, the hoop further comprises a mounting bolt and a sleeve, a pile body of the spiral ground pile is provided with a hole, the outer side of the pile body of the spiral ground pile is provided with a fixing nut at the position of the hole, and the fixing nut is connected with the screw cap. The mounting bolt is screwed into the spiral ground pile from the fixing nut and the hole, a clamping groove is formed in the bottom of the sleeve, the spiral ground pile is sleeved with the sleeve, the fixing nut is clamped in the clamping groove, a vertical stiffening rib passing through the center of the sleeve is arranged in the sleeve, and the pile cap is connected with the vertical stiffening rib in an inserted mode. Through the force transmission path of the pile cap, the vertical stiffening rib, the sleeve, the fixing nut, the spiral ground pile and the soil body, the sleeve drives the spiral ground pile to rotate downwards at a high speed through the fixing nut, so that the spiral ground pile is driven into the designed depth, drilling in a pile body is avoided, and welding of a flange plate on a pile head is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of construction technology of helical ground piles for photovoltaic projects, and in particular to a sleeve for a helical ground pile of a photovoltaic support. Background Technology

[0002] For desert photovoltaic projects, helical pile technology has become an ideal foundation solution due to its adaptability to complex soil conditions, rapid construction, and low environmental impact. Currently, there are various methods for loading helical piles, such as welding flanges to the pile head or inserting pins into holes in the pile sidewalls, then rotating the pile cap into the flange or pin to drive it to the designed depth. However, welding flanges to each pile head increases welding procedures and costs, and also causes transportation inconvenience. Inserting holes in the pile sidewalls weakens the pile structure and requires structural reinforcement. However, in areas with hard soil, when the rotational torque applied by the piling machine is too high, the pin inside the hole can cause crushing damage to the pile sidewalls. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides a sleeve for a photovoltaic support spiral ground pile.

[0004] This utility model is achieved through the following technical solution:

[0005] A sleeve for a photovoltaic support spiral ground pile, the sleeve including a spiral ground pile and a pile cap, the sleeve also including a mounting bolt and a sleeve, the spiral ground pile having a hole in its body, a fixing nut on its outer side at the hole position, the mounting bolt being screwed into the spiral ground pile through the fixing nut and the hole, the sleeve having a groove at the bottom, the sleeve being fitted over the spiral ground pile and the fixing nut being engaged in the groove, the sleeve having a vertical stiffening rib passing through its center inside, the pile cap being inserted into the vertical stiffening rib.

[0006] Furthermore, the head of the mounting bolt is on the outside of the helical pile, and a certain distance is reserved between the head of the mounting bolt and the fixing nut.

[0007] Furthermore, the holes are evenly distributed around the circumference of the spiral pile.

[0008] Furthermore, the vertical stiffening rib is a square steel plate, with both ends fixed to the inner wall of the sleeve.

[0009] Furthermore, the pile cap is provided with a slot, into which the vertical stiffening rib is inserted.

[0010] The beneficial effects of this utility model are:

[0011] 1. By applying sufficient rotational torque and axial pressure to the helical pile, the pile body is directly screwed into the undisturbed original foundation. The axial pressure and rotational torque are transmitted through the force path of pile cap - vertical stiffening rib - sleeve - fixing nut - helical pile - soil. Relying on this special design, the soil is squeezed and cut under the action of rotation and axial force, so that the surrounding soil self-integrates and compacts, thereby forming a high side friction resistance and partial end bearing capacity. The fixing nut reserved on the helical pile is used as the force point of the sleeve, avoiding drilling holes in the pile body and welding flanges to the pile head.

[0012] 2. This clamp is easy to make and can be reused. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the hoop of this utility model from one perspective;

[0014] Figure 2 This is a top view of the clamp of this utility model;

[0015] Figure 3 This is a structural schematic diagram of the hoop of this utility model from another perspective;

[0016] Figure 4 This is a schematic diagram of the structure of the sleeve of this utility model.

[0017] In the diagram: 1. Pile cap; 2. Vertical stiffening rib; 3. Sleeve; 31. Groove; 4. Fixing nut; 5. Spiral pile; 6. Mounting bolt head; 7. Mounting bolt. Detailed Implementation

[0018] The following description further explains the structures involved in this utility model and the technical terms used therein. These descriptions are merely illustrative of how this utility model is implemented and do not constitute any limitation on this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, terms such as "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figure 1-4 As shown, a sleeve for a photovoltaic support spiral ground pile includes a spiral ground pile 5, a pile cap 1, an installation bolt 7, and a sleeve 3. The spiral ground pile has a hole in its body, and a fixing nut 4 is welded to the outside of the spiral ground pile at the hole position. The installation bolt is screwed into the spiral ground pile 5 through the fixing nut 4 and the hole. The bottom of the sleeve 3 has a groove 31. The sleeve 3 is fitted over the spiral ground pile 5 and the fixing nut 4 is locked in the groove 31. A vertical stiffening rib 2 passing through its center is welded inside the sleeve 3. The pile cap 1 is inserted into the vertical stiffening rib 2.

[0022] This invention applies sufficient rotational torque and axial pressure to the helical pile 5, allowing the pile to be directly screwed into the unexcavated original foundation. The axial pressure and rotational torque are transmitted through the pile cap—vertical stiffening rib—sleeve—fixing nut—helical pile—soil. Relying on this special design, the soil is squeezed and cut under the action of rotation and axial force, causing the surrounding soil to self-integrate and compact, thereby forming high side friction resistance and partial end bearing capacity. The fixing nut 4 reserved on the helical pile 5 is used as the force point of the sleeve 3, avoiding the need to drill holes in the pile body and weld flanges to the pile head.

[0023] As an optional embodiment, the mounting bolt head 6 is located on the outside of the helical ground pile 5, and a certain distance is reserved between the mounting bolt head 6 and the fixing nut 4 for fixing the photovoltaic bracket.

[0024] As an optional embodiment, multiple holes are evenly distributed around the circumference of the helical pile. Specifically, there are three holes evenly distributed around the circumference.

[0025] As an optional embodiment, the vertical stiffening rib 2 is a square steel plate with both ends welded to the inner wall of the sleeve 3.

[0026] As an optional embodiment, the pile cap 1 is provided with a slot into which the vertical stiffening rib 2 is inserted.

[0027] The specimen loading method is as follows:

[0028] Step 1: Making the hoop

[0029] According to the requirements of the photovoltaic support, first make the fixing nut 4, and then weld the fixing nut 4 to the spiral ground pile 5;

[0030] According to the requirements of the photovoltaic support, three holes for mounting bolts 7 are reserved in the body of the spiral ground pile 5;

[0031] Based on the cross-section of the spiral pile 5, a sleeve 3 and a vertical stiffening rib 2 are fabricated, and the stiffening rib 2 is welded to the inner wall of the sleeve 3.

[0032] Step 2: Specimen Loading

[0033] Screw the mounting bolt 7 into the fixing nut 4, leaving a certain distance between the mounting bolt head 6 and the fixing nut 4. Place the sleeve 3 outside the spiral ground pile 5 and lock it onto the fixing nut 4.

[0034] Embed the pile cap 1 into the pile driver, and then connect the pile cap 1 to the vertical stiffening rib 2.

[0035] When the pile driver applies vertical force and torque simultaneously, the sleeve 3 will drive the helical pile 5 to rotate downward at high speed through the fixing nut 4, so that the pile is driven into the designed depth.

[0036] Step 3: Dismantling of the device

[0037] Remove the pile cap 1 from the pile driver and remove the sleeve 3 from the helical pile 5. The pile cap 1 and sleeve 3 can be reused.

[0038] 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. A sleeve for a photovoltaic support helical ground pile, the sleeve comprising a helical ground pile and a pile cap, characterized in that: The sleeve also includes mounting bolts and a sleeve. The helical pile body has holes, and a fixing nut is provided on the outside of the hole. The mounting bolt is screwed into the helical pile through the fixing nut and the hole. The bottom of the sleeve has a groove. The sleeve is fitted over the helical pile and the fixing nut is locked in the groove. The inside of the sleeve has a vertical stiffening rib passing through its center. The pile cap is inserted into the vertical stiffening rib.

2. The sleeve of the photovoltaic support spiral ground pile according to claim 1, characterized in that: The head of the mounting bolt is on the outside of the helical pile, and a certain distance is reserved between the head of the mounting bolt and the fixing nut.

3. The sleeve of the photovoltaic support spiral ground pile according to claim 1, characterized in that: The holes are evenly distributed around the circumference of the spiral pile.

4. The sleeve of the photovoltaic support spiral ground pile according to claim 1, characterized in that: The vertical stiffening ribs are square steel plates, with both ends fixed to the inner wall of the sleeve.

5. The sleeve of the photovoltaic support spiral ground pile according to claim 1, characterized in that: The pile cap is provided with a slot, and the vertical stiffening rib is inserted into the slot.

Images