ES2400430B1 - DEVICE AND METHOD FOR THE GROUND FOUNDATION OF A SOLAR COLLECTOR SUPPORT STRUCTURE - Google Patents

Abstract

Device and method for the foundation to the ground of a support structure of solar collectors. # It allows the foundation to the ground (1) of a structure (2) of support for solar collectors quickly, accurately and cost-effectively, with simplicity and cleaning. The device comprises: at least one pile (3) provided with a first end (4) adapted to be inserted into the ground (1) and a second end (5) protruding from the ground (1); means for joining the pile (3) to the structure (2) comprising a bolt (7) or a cover (30). The method comprises: introducing into the ground (1) the first end (4) of the pile (3), leaving the second end (5) on the outside of the ground (1); fix the bolt (7) to the pile (3); and fix the structure (2) to the bolt (7) or the cover (30).

Description

OBJECT OF THE INVENTION

The present invention can be included within the technical field of

10 use of solar energy. More specifically, the object of the invention relates to a device and a method for grounding a collector support structure.

BACKGROUND OF THE INVENTION

In the field of construction, the so-called piles are known, used as constructive elements used for the foundation of works, which allows loads to be transferred to a resistant soil stratum, when it is at a depth such that

20 makes, more technically or economically, a more conventional foundation by footings or slabs.

In this regard, British patent GB2360809 refers to a pile and an installation method, describing a pile comprising a rod provided with at least one propeller that acts as a screw thread

25 to facilitate the penetration of the rod into the ground, where the propeller has a plow-shaped formation in the loading flank, to radially compress the ground outwardly during the penetration of the rod. The method of introducing the pile includes the incorporation of a forging material around the rod during the

introduction to insert into a vacuum created by training in form

Plow

Also, British patent GB2397327 refers to a pile that 5 comprises at least two axially aligned portions so telescopic to be able to set the effective length of the pile, as well as comprises

fixing means to allow one of the sections to be fixed to the other section in

a plurality of positions to selectively determine the total length of the pile.

Specifically in the field of solar energy, the use of foundation piles is known for fixing photovoltaic solar panel structures to the ground.

15 However, the application of the piles to solar concentration structures such as CCP (parabolic trough collectors),

It has drawbacks due to, among other reasons, the high demands on which the foundations of the thermal collectors are subject to the photovoltaic ones. Additionally, fixing with 20 piles entails precision requirements that are not within reach.

of all the systems used.

The problem that arises is to define fixing means

of structures of solar collectors to foundation piles that allow a simple execution of the fixation and with high precision.

DESCRIPTION OF THE INVENTION

The present invention describes, according to a first aspect, a

30 device for the foundation to the ground of a support structure of

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solar collectors, comprising:

-

at least one pile equipped with a first end adapted to be

inserted into the ground and with a second protruding end of the ground; and -a means of joining the pile to the structure.

According to a first embodiment of the invention, the means for attaching the pile to the structure comprise a bolt, linked to the pile by one end.

lower bolt (threaded or non-threaded) and linkable to the structure by a

threaded upper end opposite the lower end. The lower end of the 10 bolt is, according to this first embodiment, housed and fixed in a body

inserted in the second end of the pile (protruding end of the ground) and fixed to said pile. Preferably, the body is made of a hardenable material capable of, by drying and / or setting, hardening and

adhere to the pile and bolt, such as, for example, cement, concrete, or mortar.

A second aspect of the invention relates to a method for the foundation of a solar collector support structure to the ground,

using the device of the invention, comprising the following 20 steps: - introduction into the ground of the first end of the pile. leaving the second end on the outside of the land; and -fixing the structure to the outer end of the pile.

When the joining means comprise a bolt, the method may include the additional step of fixing the bolt to the pile.

In this way, fixing the bolt to the pile can be done by following the steps below:

-

define, at the second end of the pile, a receptacle open to the

less partially; -dispose and hold the lower end of the bolt inside the receptacle, preferably with the help of templates or control

topographic;

5 -vert the hardenable material into said receptacle

through the second opening; Y

-

allow the hardenable material to harden.

Alternatively, it is possible to pour the hardenable material first and then, before hardening said material, insert the lower end of the bolt into said hardenable material.

Preferably, defining a receptacle at the second end of the pile comprises necessarily inserting into the second end until

15 a first depth a first tight elastic cap, preferably

made of polystyrene foam, slightly larger than the

section of the second end of the pile, the receptacle being constituted by the first plug and the inner surface of the second end of the pile, above the first plug;

Optionally, the step of defining the receptacle may include an additional step of forcing into a second depth,

less than the first depth, a second tight elastic plug,

preferably of polystyrene foam, of dimensions slightly greater than the section of the second end of the pile, said

second cap provided with a first opening to insert the bolt and a second opening to pour the hardenable material. The location of the

First opening can preferably be made by means of templates or topographic control.

P2011 30313

According to a second preferred embodiment, the connecting means comprise, alternatively to the bolt, a cover arranged in a manner

adjusted on the outside of the second end of the pile, said cover provided with

First fixing means to fix the pile to the structure. Preferably, the fixing means comprise a metal square provided

of a first flank to be fixed to the lid and a second flank to be fixed to the structure. To fix the second flank to the structure you could use

also bolts or other type of fixings.

According to a third preferred embodiment, the joining means comprise, in addition to a bolt: - a first plate fixed at the top of the second end of the pile, and provided with a plurality of first grooves; and -a second plate arranged on the first plate, and provided with a

15 first drill and second paths of drying guideline (in plan) to the guideline of the first grooves, as well as at least partially superimposed on the first grooves, to allow the fixing of the first plate and the second plate in variable relative positions , by means of second insertable fixing means through the first grooves and

20 the second slots; where the bolt passes through the first hole and is fixed to the second plate.

Preferably, the first slots and the second slots

include:

25 - first and second straight grooves whose guidelines are segments of straight lines, preferably according to directions from the outer contour to the inside of the plates; and -first and second circumferential grooves whose guidelines are segments of circumferences, preferably with respect to the centers of the

30 plates;

where each first straight groove is superimposed with a second circumferential groove and each first circumferential groove is superimposed with a second radial groove.

5 In this way, fixing the bolt to the pile comprises the steps of: -fixing the first plate to the pile; - insert the lower end of the bolt into the first hole and fix said

bolt to the second plate;

-

superimpose the second plate to the first plate by matching at least partially the first grooves with the second grooves; Y

-

screw the first plate to the second plate by inserting the

second fixing means through the grooves.

Compatible with any of the described embodiments, the joining means 15 may additionally comprise a joining element,

preferably a profile, provided with a flat face, wherein said flat face comprises two second holes to facilitate fixing the piles to

the structure, as well as the flat face is adapted so that on said face

flat lay the structure.

Optionally, the method explained comprises the additional step of determining the location of the pile in relation to the ground prior to the introduction into the ground of said pile, as well as determining the location,

If bolts are used, the bolt with respect to the pile prior to fixing the bolt to the pile. Determination of the location of the bolt and / or the

Pile can preferably be performed by at least one of the following techniques: - topographic determination and control; Y

-

use of templates that have some marks with the

relative locations for piles and I or bolts.

The present invention allows the foundation to the ground of a support structure of solar collectors quickly, accurately and cost-effectively, with simplicity and cleaning, without the need for trucks, concrete mixers, etc.

DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the features of the invention,

In accordance with a preferred example of practical realization thereof, a set of drawings is attached as an integral part of said description, where, as an illustration and not limitation, the following has been represented:

Figure 1.- Shows a sectional view of the device according to the first preferred embodiment.

Figure 2.- Shows a view of the device according to the second preferred embodiment.

20 Figure 3a. -Shows a perspective view of the first plate, according to the third preferred embodiment.

Figure 3b.-Shows a perspective view of the second plate of the third preferred embodiment.

25 Figure 3c. -Shows a perspective view of the first plate and the second plate joined, according to the third preferred embodiment.

Figure 3d.-Shows a side view of the junction of the first plate and the

Second plate

Figure 4a.-Shows a view of an example of joining the pile to the structure by means of a profile.

Figure 4b.-Shows a detailed view of the union by means of a profile 5 Figure 4a.

PREFERRED EMBODIMENTS OF THE INVENTION

As can be seen in figures 1, 2, 3a, 3b, 3c, 3d, 4a and 4b, the device for the foundation to the ground (1) of a support structure (2)

of solar collectors, according to the invention, comprises: at least one

pile (3) provided with a first end (4) adapted to be inserted into the ground (1) and a second end (5) protruding from the ground (1); And a means of joining the pile (3) to the structure (2). Likewise, the method for ground foundation (1) of a collector support structure (2)

solar using the device of the invention and comprising the

next steps: introduction into the field (1) of the first end (4) of the

pile (3), leaving the second end (5) on the outside of the ground (1); Y

fixing the structure (2) to the bolt (7).

According to a first embodiment of the invention, as illustrated in the

Figure 1, the means for joining the pile (3) to the structure (2) comprise a

bolt (7) linked to the pile (3) by a lower end (8) (threaded or not

threaded) and linkable to the structure (2) by an upper end (9) threaded

25 opposite the lower end (8).

Following the first embodiment, the method comprises the step

before fixing the bolt to the pile. For this, the lower end (8) of the bolt (7) is housed in a body (10), formed by mortar, inserted in the second

end (5) of the pile (3) and fixed to said pile (3).

Thus, the fixing of the bolt (7) to the pile (3) can be carried out by inserting the bolt (3), consecutively, by the second end (5) of the pile (3), a first plug (13) and a second plug

(14) preferably made of polystyrene foam, of dimensions

5 slightly higher than those of the section of the second end (5) of the pile (3), defining a receptacle (not shown) between the two plugs. TO

then a second opening (12) and a first opening are made

(not shown) in the second plug (14) and the mortar is poured into the receptacle through the second opening (12) and left

10 harden said mortar. The location of the first opening is preferably carried out with the help of a template or topographic control. Next, the lower end (8) of the bolt (7) is housed in said first opening.

15 According to a second preferred embodiment, as shown

in figure 2, the joining means comprise, alternatively to the bolt (7), a cover (30) arranged, preferably in a tight manner, outside the second end (5) of the pile (3), said cover (30) provided with first fixing means in the form of a first metal square (31) 20 provided with a first flank (32) to be fixed to the cover (30) and a second flank (33) drilled to be fixed directly to the structure ( 2).

Additionally, the first fixing means may comprise a

second square (34) comprising a lower flank (35) drilled resting on the second flank (33) and an upper flank (36) supporting for

25 the structure (2). There is no problem that the fixing of the first square (31) or the second square (32) to the structure (2) is by means of bolts (7).

According to a third preferred embodiment, as seen in the

30 figures 3a, 3b, 3c and 3d, the joining means comprise, in addition to the bolt

(7):

-

a first preferably circular circular plate (18) fixed at the top of the second end (5) of the pile (3), and provided with a plurality of first grooves (20, 21), as shown in Figure 3a;

5 -a second plate (24), preferably circular, see figure 3b, arranged on the first plate (18), (see figures 3c and 3d) and equipped with a first hole (not shown) and with second grooves paths (22, 2. 3); Y

-

second fixing means (26), preferably screws, see figure 3c, insertable through the first grooves (20, 21) and of the

10 second grooves (22, 23) to fix the first plate (18) to the second plate (24), where the bolt (7) passes through the first hole of the second plate (24) and is fixed to the second plate (24 ).

In the third embodiment, the first slots (20, 21) and the second

15 slots (22, 23) comprise: - straight grooves (20, 22) whose guidelines are segments of straight lines of radial directions relative to the centers of the plates (18, 24); Y-circumferential grooves (21, 23) whose guidelines are segments of

concentric circumferences with respect to the centers of the plates (18, 24); 20 where each first straight groove (20) is superimposed with a second

circumferential groove (23) and each first circumferential groove (21) is

superimposed with a second straight groove (22).

According to the third embodiment, fixing the bolt (7) to the pile

25 (3) comprises the steps of: fixing the first plate (18) to the pile (3); insert the lower end (8) of the bolt (7) into the first hole of the second plate (24) and fix said bolt (7) to said second plate (24); superimpose the second plate (24) to the first plate (18) by at least partially matching the first grooves (20, 21) with the second grooves (22, 23); And screw the

30 first plate (18) to the second plate (24) by entering the second means

fixing (26) through the grooves (20, 21, 22, 23).

In a manner compatible with any of the described embodiments,

as seen in figures 4a and 4b, the joining means comprise

5 additionally a connecting element, preferably a profile (15), provided with a flat face (29), wherein said flat face (29) comprises second holes (not shown) to facilitate the attachment of the piles to the structure, as well as the flat face (29) is adapted so that the structure (2) rests on said flat face (29). In particular, in the case of the use of bolts (7),

10 the second holes are used to accommodate and fix the bolts (7) of two piles (3)

contiguous

The method explained comprises the additional step of determining the

location of the pile (3) with respect to the ground (1) prior to the introduction

15 on the floor of said pile (3), as well as determining, when a bolt (7) is used, the location of the bolt (7) with respect to the pile (3) prior to fixing the bolt (7) to the pile ( 3). Bolt location determination

(7) and / or the pile (3) can preferably be carried out by at least

one of the following techniques: topographic determination and control; and employment

20 of templates (not shown) that have marks with relative locations for the piles (3) and / or bolts (7).

Claims (19)

1. Device for the foundation to the ground (1) of a structure (2) of support for solar collectors, comprising: 5-at least one pile (3) provided with a first end (4) adapted to be inserted into the ground (1) and a second end (5) protruding from the ground (1); Y

-

connecting means of the pile (3) to the structure (2), characterized in that the joining means comprise a bolt (7) linked:

10 - to the pile (3) by a lower end (8) that is housed and fixed in a body (10) inserted in the second end (5) of said pile (3) and fixed to said pile (3), and

-

to the structure (2) by an upper end (9) threaded opposite the lower end (8).

2.-Device for the foundation to the ground (1) of a structure (2) supporting solar collectors, comprising: -at least one pile (3) provided with a first end (4) adapted to be inserted in the ground (1) And of a second end (5) protruding from the ground (1); Y

-

connecting means of the pile (3) to the structure (2), characterized in that the joining means comprise a cover (30) arranged outside the second end (5) of the pile (3), said cover (30) provided of first fixing means for fixing said cover (30) to the pile

25 (3) and structure (2). 3.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 2, characterized in that the first fixing means comprise a metal square (31) provided with a first flank (32) to be fixed to the cover (30) and a second flank (33) to be fixed to the structure (2). 4.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 3, characterized in that the first fixing means comprise 5 additionally a second square (34) comprising a lower flank (35) drilling supported on the second flank (33) and an upper flank (36) supporting the structure (2). 5.-Device for the foundation to the ground (1) of a structure (2) of 10 solar collector support according to any one of claims 3 or 4, characterized in that it additionally comprises bolts (7) for fixing the first square (31) or the second square (32) to the structure (2). 15 6.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 1, characterized in that the body (10) is made of a material susceptible to drying and setting, hardening and adhering to the pile (3) and the bolt (7). twenty 7.-Device for the foundation to the ground (1) of a structure (2) of solar collector support, according to claim 6, characterized in that the body (10) is made of at least one material selected from: 25-cement;

-

concrete; Y

 -mortar. 8.-Device for the foundation to the ground (1) of a structure (2) of 30 solar collector support, comprising: -at least one pile (3) provided with a first end (4) adapted for be inserted into the ground (1) and of a second end (5) protruding from the ground (1); And - a means of joining the pile (3) to the structure (2), where the joining means comprise a bolt (7) linked: 5 - to the pile (3) by a lower end (8); Y

-

linkable to the structure (2) by an upper end (9) threaded opposite the lower end (8); characterized in that the joining means (3) additionally comprise:

-

a first plate (18) fixed at the top of the second end 10 (5) of the pile (3), and provided with a plurality of first grooves (20, 21); Y

-

a second plate (24) disposed on the first plate (18), and provided with a first bore, as well as second grooves (22, 23) of drying directive to the directive of the first grooves (20, 21), and at least

partially superimposed on the first grooves (20, 21), to allow 15 fixing the first plate (18) and the second plate (24) in variable relative positions, by means of second fixing means (26) inserts bias through the first grooves (20, 21) and the second grooves (22, 23); where the bolt (7) passes through the first hole of the second plate (24) and is fixed to the second plate (24). 9.-Device for the foundation to the ground (1) of a structure (2) of solar collector support, according to claim 8, characterized in that the plates (18, 24) are circular. 25 10.-Device for the foundation to the ground (1) of a structure (2) of solar collector support, according to claim 8, characterized in that the first grooves (20, 21) and the second grooves (22, 23) comprise: - straight grooves (20, 22) whose guidelines are segments of straight lines; and circumferential grooves (21, 23) whose guidelines are segments of concentric circumferences; where each first straight groove (20) is superimposed with a second circumferential groove (23) and each first circumferential groove (21) is superimposed with a second straight groove (22). 11.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 10, characterized in that the guidelines of the straight grooves (20, 22) have directions from the outer contour to the inside of the plates (18, 24). 12.-Device for the foundation to the ground (1) of a structure (2) of solar collector support, according to claims 9 and 10, characterized in that the straight groove guidelines (20, 22) have radial directions with respect to the centers of the plates (18, 24), as well as the guidelines of the circumferential grooves (21, 23) are concentric regarding these centers. 13.-Device for the foundation to the ground (1) of a structure (2) supporting solar collectors, according to any one of the Claims 1 or 2, characterized in that the joining means further comprise an element of an ion provided with a flat face (29), wherein said flat face (29) comprises two second holes for fixing the piles (3) to the structure ( 2). 25 14.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to any one of claims 1 to 13 characterized in that the second holes are adapted to accommodate and fix the bolts (7) of two adjacent piles (3). 30 15.-Device for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 13, characterized in that the connecting element is a profile (15). 16.-Method for the foundation to the ground (1) of a structure (2) of solar collector support using the device described in any one of the preceding claims, characterized in that it comprises the following steps:

-

introduction into the ground (1) of the first end (4) of the pile (3),

leaving the second end (5) on the outside of the land (1); Y

-

fixing the bolt (7) to the pile (3) or to the cover (30).

17.-Method for the foundation to the ground (1) of a structure (2) of solar collector support in accordance with reiv indication 16, characterized in that the fixing of the bolt (7) to the pile (3) comprises the Next steps: 15 -define at the second end of the pile (3) a receptacle open to the less partially;

-

arrange and hold the lower end (8) of the bolt (7) in position

inside the receptacle;

-

pour the hardenable material into said receptacle; Y

20-Let the hardenable material harden. 18.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 17, characterized in that the pouring of the hardenable material is prior to the arrangement of the lower end (8) of the bolt (7). 19.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to any one of the claims 17 or 18, characterized in that defining a receptacle 30 comprises necessarily introducing a first depth to a first depth tight elastic plug (13) slightly larger than the section of the second end (5) of the pile (3). 20.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 19, characterized in that it comprises the additional step of forcing to a second depth, less than the first depth, a second elastic tight plug (14) of dimensions slightly greater than the section of the second end (5) of the pile (3). 10 21.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to any one of the claims 19 or 20, characterized in that the first cap (13) and the second cap (14) are made of polystyrene foam. 15 22.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 16, characterized in that the fixing of the bolt (7) to the pile (3) comprises the steps of: -fixing the first plate (18) to the second end (5) of the pile (3); 20 - insert the lower end (8) of the bolt (7) into the first hole of the second plate (24) and fix said bolt (7) to said second plate (24);

-

superimpose the second plate (24) to the first plate (18) by at least partially matching the first grooves (20, 21) with the second grooves (22, 23); Y

25 -fix the first plate (18) to the second plate (24) by introducing the fixing means (26) through the grooves (20, 21, 22, 23). 23.-Method for the foundation to the ground (1) of a structure (2) for supporting solar collectors according to claim 16, characterized in that it comprises the additional step of determining the location of the pile (3) with respect to the terrain ( 1) prior to ground introduction of said pile (3). 24.-Method for the foundation to the ground (1) of a structure (2) of solar collector support according to claim 16, characterized in that it comprises the additional step of determining the location of the bolt (7) with respect to the pile (3) prior to fixing the bolt (7) to the pile (3). 25.-Method for the foundation to the ground (1) of a support structure (2) 10 of solar collectors according to any one of claims 23 or 24, characterized in that determining the location of the bolt (7) and I or the pile (3) is performed by at least one of the following techniques:

-

topographic determination and control; Y

-

use of templates that have some marks with the

15 relative locations for the piles (3) and I or the bolts (7).