Portable photovoltaic support foundation reaming device
The portable photovoltaic support foundation hole enlargement device uses a collection container and a sliding scraper assembly to collect the soil for hole enlargement, solving the problem of mechanical hole enlargement, improving construction efficiency and reducing manpower input.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 1 CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-21
AI Technical Summary
In the construction of photovoltaic support foundations, mechanical hole enlargement is difficult to achieve and secondary hole cleaning is required, resulting in a large amount of manpower input. Soil is prone to falling into the pile foundation hole, affecting construction efficiency.
A convenient photovoltaic support foundation hole enlargement device is designed, including a collection container, a hanging rod, and a sliding scraper assembly. The hanging rod is fixed to the inner wall of the collection container, and the sliding scraper assembly scrapes the soil into the container and collects it into the container, thus preventing the soil from falling into the pile foundation hole.
It effectively collects the soil generated during borehole enlargement, preventing soil from falling into the pile foundation hole, shortening the construction cycle, reducing manpower input, and is suitable for widespread use.
Smart Images
Figure CN224149494U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a convenient device for expanding holes in the foundation of a photovoltaic support structure. Background Technology
[0002] The agricultural photovoltaic power station project has a total installed capacity of 100MW on the AC side (the total installed capacity on the DC side is tentatively set at 140MWp), using N-type bifacial dual-wave monocrystalline silicon solar cell modules of 615Wp or 620Wp specifications. The project involves 10,676 monopiles and 14,416 twin piles, resulting in a substantial amount of pile foundation work.
[0003] The terrain of the mountain photovoltaic area is relatively steep. During the construction of the double-column support foundation cast-in-place piles, it is difficult to use mechanical hole enlargement and a second hole cleaning is required, which requires a large amount of manpower.
[0004] Based on the above problems, we designed a convenient photovoltaic support foundation hole enlargement device that can be filled into the pile foundation hole and then enlarged, effectively collecting the soil generated during hole enlargement and preventing soil from falling into the pile foundation hole. Summary of the Invention
[0005] The technical problem to be solved by this utility model is to provide a convenient photovoltaic support foundation hole enlargement device that can be filled into the pile foundation hole and then enlarged, effectively collecting the soil generated during hole enlargement and preventing soil from falling into the pile foundation hole.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A portable photovoltaic support foundation hole enlargement device includes a collection container placed inside the pile foundation hole, and a suspension rod connected to the collection container. The suspension rod is located at the axis of the collection container, and the lower end of the suspension rod is curved and fixed to the inner wall of the collection container. A sliding scraper assembly is installed through the suspension rod.
[0008] Preferably, the lower end of the collection container is machined with a threaded connection portion, and a guide cone surface is machined between the collection container and the threaded connection portion. The diameter of the guide cone surface gradually decreases. The lower end of the lifting rod is welded and fixed to the inner wall of the collection container, and an extension component is fitted through the threaded connection portion.
[0009] Preferably, the extension component includes a connecting ring and a folded collection tube fixed to the outside of the connecting ring, the lower end of the folded collection tube being closed, and the connecting ring being threadedly engaged with the threaded connection portion.
[0010] Preferably, the extension component includes an end cap that is threadedly engaged with the threaded connection portion, and the end cap, in conjunction with the rear end cap, forms a seal around the bottom of the threaded connection portion.
[0011] Preferably, the sliding scraper assembly includes a slide rod and a scraper. The upper end of the slide rod is closed, and the lower end of the slide rod is threaded with a rod cap. The rod passes through the axis of the rod cap and is fitted with an end nut. The end nut limits the upward movement of the slide rod. The scraper is welded to the outside of the slide rod, and a handle is fixed to the outer wall of the slide rod near the top.
[0012] Preferably, an interior angle α is formed between the scraper and the slide bar, where α < 85°, so that when the scraper rotates with the slide bar, it scrapes the soil in the enlarged hole into the collection container.
[0013] Preferably, a locking screw is screwed into the outer wall of the slide rod near the bottom position. After being screwed in, the locking screw abuts against the suspension rod, and the locking screw is located below the end nut.
[0014] Preferably, a right-angle groove is machined at the upper part of the end of the scraper, and a threaded hole is machined on the vertical surface of the right-angle groove. A limit screw is fitted through the threaded hole. After the limit screw is screwed outward, it extends to the outside of the right-angle groove and is limited to the ground by the limit screw.
[0015] The beneficial effects of this utility model are:
[0016] When using this device, the collection container is inserted into the pile foundation hole, with the upper edge of the collection container lower than the bottom surface of the hole during the secondary hole enlargement. Then, the hole is enlarged manually, and the soil produced during the hole enlargement falls into the collection container, eliminating the trouble of secondary hole cleaning, shortening the construction cycle, and making it suitable for widespread use. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is an exploded view of the structure of this device;
[0020] Figure 3 This is a schematic diagram of the end cap installation;
[0021] Figure 4 This is a schematic diagram showing the assembly of the boom and the sliding scraper assembly;
[0022] Figure 5 A cross-sectional view of the mating position of the boom and the sliding scraper assembly;
[0023] Figure 6 This is a schematic diagram showing the connection between the slide bar and the scraper.
[0024] Figure 7 This is a magnified view of point A. Detailed Implementation
[0025] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0026] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0027] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.
[0028] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.
[0030] See Figure 1 The present invention discloses a convenient photovoltaic support foundation hole enlargement device, including a collection container 1 placed in the pile foundation hole, and a suspension rod 2 connected to the collection container 1. The suspension rod 2 is located at the axis of the collection container 1, and the lower end of the suspension rod 2 is curved and fixed to the inner wall of the collection container 1. A sliding scraper assembly 5 is installed through the suspension rod 2.
[0031] This device features a simple, practical, and lightweight design, making it easy to operate and install. Addressing the challenge of enlarging and cleaning the upper hole of a fixed double-column photovoltaic support foundation (200mm at the top, 150mm at the bottom), a small tool for hole enlargement and cleaning was developed. This device is reusable and can be used in steep terrain with limited working space where mechanical construction is not feasible. Installation simply involves placing the tool inside the pile hole; after enlarging, the device can be removed and the soil emptied.
[0032] For the design of pile foundation holes, the outer diameter of the collection container is 150mm.
[0033] See Figure 2 As shown, a threaded connection part 11 is machined at the lower end of the collection container 1, and a guide cone surface 12 is machined between the collection container 1 and the threaded connection part 11. The diameter of the guide cone surface 12 gradually decreases. The lower end of the hanging rod 2 is welded and fixed to the inner wall of the collection container 1. An extension component is fitted through the threaded connection part 11.
[0034] In the above technical solution, the design of the guide cone surface 12 is adopted to facilitate the downward insertion of the collection container 1 into the pile foundation hole.
[0035] See Figure 2 As shown, the extension component includes a connecting ring 3 and a folded collection tube 31 fixed to the outside of the connecting ring 3. The lower end of the folded collection tube 31 is closed, and the connecting ring 3 is threadedly engaged with the threaded connection part 11.
[0036] This technical solution is mainly for situations with a large amount of soil. By using a connecting ring 3 in conjunction with a folding collection pipe 31, more soil can be stored, eliminating the need to dump the soil midway.
[0037] See Figure 3 As shown, the extension component includes an end cap 4, which is threadedly engaged with the threaded connection portion 11, and the end cap 4 forms a closure on the bottom of the threaded connection portion 11.
[0038] For cases with a small amount of soil, end cap 4 can be used for sealing.
[0039] See Figure 4 , Figure 5 and Figure 6 As shown, the sliding scraper assembly 5 includes a slide rod 51 and a scraper 52. The upper end of the slide rod 51 is closed, and the lower end of the slide rod 51 is threaded with a rod cap 53. The lifting rod 2 passes through the axis of the rod cap 53 and is fitted with an end nut 54. The end nut 54 limits the upward movement of the slide rod 51. The scraper 52 is welded to the outside of the slide rod 51, and a handle 55 is fixed near the top of the outer wall of the slide rod 51.
[0040] The above technical solution has two technical effects:
[0041] 1. When expanding the hole, adjust the position of the slide bar 51 so that the scraper 52 acts on the ground to prevent the collection container 1 from falling into the pile hole.
[0042] 2. The end of the scraper 52 is the position of the hole wall after the hole is enlarged. As the hole is gradually formed, the scraper 52 will fall to the bottom of the hole under the action of gravity. At this time, by rotating the slide bar 51, the residual soil in the enlarged concave hole is scraped into the collection container by the rotation of the scraper 52.
[0043] That is, the scraper not only scrapes the soil, but also prevents the collection container 1 from falling into the pile hole.
[0044] See Figure 6 As shown, an interior angle α is formed between the scraper 52 and the slide bar 51, where α < 85°, so that when the scraper 52 rotates with the slide bar 51, it scrapes the soil in the enlarged hole into the collection container 1.
[0045] In this embodiment, α is 78°.
[0046] The small-angle design allows the slider 51 to smoothly scrape the soil into the collection container 1 when it rotates.
[0047] See Figure 4 and Figure 5 As shown, a locking screw 56 is screwed into the outer wall of the slide rod 51 near the bottom. After being screwed in, the locking screw 56 abuts against the lifting rod 2. The locking screw 56 is located below the end nut 54.
[0048] This technical solution can lock the relative position of the slide bar 51 and the lifting bar 2, and can choose whether to lock it as needed.
[0049] For example, the position of the sliding rod 51 is locked so that after the collection container 1 is inserted into the pile hole, the upper edge of the collection container 1 is flush with the bottom surface of the pre-expanded hole. This method facilitates controlling the depth of hole expansion during the expansion process. It should be noted that during the initial expansion, the expansion should be carried out on the side away from the scraper to avoid the scraper moving downwards due to drilling at the scraper's location first. The position of the scraper can also be adjusted by rotation during the expansion process.
[0050] See Figure 7 As shown, a right-angle groove 522 is machined at the upper part of the end of the scraper 52, and a threaded hole is machined on the vertical surface of the right-angle groove 522. A limiting screw 523 is fitted through the threaded hole. After the limiting screw 523 is screwed outward, it extends to the outside of the right-angle groove 522 and is limited to the ground by the limiting screw 523.
[0051] This technical solution is specifically designed to ensure the height of the collection container 1. After the limiting screw 523 is unscrewed, it remains fixed at the ground surface. At this time, the height of the limiting screw 523 is used as the elevation reference, and the position of the slide rod 51 is adjusted so that when the limiting screw 523 contacts the ground, the height of the upper edge of the collection container 1 is the bottom position of the enlarged hole.
[0052] During the hole enlargement process, the position of the collection container 1 remains unchanged under the support of the limiting screw 523, which facilitates the hole enlargement.
[0053] After the hole is enlarged, the limiting screw 523 is screwed inward so that the scraper 52 can fall into the enlarged hole.
[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0058] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A portable photovoltaic support foundation reaming device comprising a collection container (1) placed in a pile foundation hole, characterized in that: It also includes a boom (2) connecting the collection container (1), the boom (2) being located at the axis of the collection container (1), the lower end of the boom (2) being curved and fixed to the inner wall of the collection container (1), and a sliding scraper assembly (5) being installed through the boom (2).
2. The portable photovoltaic mount foundation reaming device of claim 1, wherein: The lower end of the collection container (1) is machined to form a threaded connection part (11), and a guide cone surface (12) is machined between the collection container (1) and the threaded connection part (11). The diameter of the guide cone surface (12) gradually decreases. The lower end of the rod (2) is welded and fixed to the inner wall of the collection container (1). An extension component is fitted through the threaded connection part (11).
3. The portable photovoltaic mount foundation reaming device of claim 2, wherein: The extension component includes a connecting ring (3) and a folded collection tube (31) fixed to the outside of the connecting ring (3). The lower end of the folded collection tube (31) is closed, and the connecting ring (3) is threadedly engaged with the threaded connection part (11).
4. The portable photovoltaic mount foundation reaming device of claim 2, wherein: The extension component includes an end cap (4), which is threadedly engaged with the threaded connection (11), and the end cap (4) forms a closure on the bottom of the threaded connection (11).
5. The portable photovoltaic mount foundation reaming device of claim 1, wherein: The sliding scraper assembly (5) includes a slide rod (51) and a scraper (52). The upper end of the slide rod (51) is closed, and the lower end of the slide rod (51) is threaded with a rod cap (53). The lifting rod (2) passes through the axis of the rod cap (53) and is fitted with an end nut (54). The end nut (54) limits the upward movement of the slide rod (51). The scraper (52) is welded to the outside of the slide rod (51). A handle (55) is fixed near the top of the outer wall of the slide rod (51).
6. The portable photovoltaic support foundation hole enlargement device according to claim 5, characterized in that: An interior angle α is formed between the scraper (52) and the slide bar (51), where α < 85°, so that when the scraper (52) rotates with the slide bar (51), it scrapes the soil in the enlarged hole into the collection container (1).
7. The portable photovoltaic mount foundation reaming device of claim 5, wherein: A locking screw (56) is screwed into the outer wall of the slide rod (51) near the bottom. After being screwed in, the locking screw (56) abuts against the lifting rod (2). The locking screw (56) is located below the end nut (54).
8. The portable photovoltaic mount foundation reaming device of claim 7, wherein: A right-angle groove (522) is machined at the upper end of the scraper (52), and a threaded hole is machined on the vertical surface of the right-angle groove (522). A limit screw (523) is fitted through the threaded hole. The limit screw (523) extends outward to the outside of the right-angle groove (522) after being rotated outward, and is limited to the ground by the limit screw (523).