JPH0415335B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention mainly relates to a ground anchor for anchoring and fixing a branch line of a utility pole or the like to the ground.

(b) Prior art It is composed of two resistance plate bodies 19, 20 and a separate branch rod 21 as shown in FIGS. 8 to 13 in the drawings, and each resistance plate body 19, 20 is connected separately. Ground anchors, which are driven into the ground and connected in an anchor shape in the soil, have a simple construction method and are easy to work with.
Since the curved resistance plates 22 and 23 have excellent soil gripping properties and can provide stable resistance, they have been used for many utility pole support lines.

To construct this ground anchor, first drive the first resistance plate 19 into the soil at a predetermined depth as shown in Fig. 11 using a hammer and tool B for transmitting the impact, and then place it at the bottom of the hole. The second resistance plate body 20 is inserted into the partially exposed guide plate 24 and driven in while being assisted by its regulation.

A reinforcing groove 33 having a height commensurate with the width of the guide plate 24 is provided on the center line of the second resistance plate body 20 which is curved to approximately match the arc of the guide plate 24.
is formed, and the locking plate 34 is fixed to the rear end of the back side across the reinforcing groove 33. Therefore, when the reinforcing groove 33 is fitted into the guide plate 24 and driven in as described above, the second resistance plate body 20 It curves through the soil without deviating from the trajectory along the guide plate 24, and when the locking plate 34 comes into contact with a part of the direction plate 25 connected below the guide plate 24, the first resistance plate body 19 and Second resistance plate body 20
are combined (see Figure 12).

After these two resistance plates 19 and 20 are connected, the guide plate 24, which is fixed by a pin 28, is rotated appropriately in accordance with the direction of the branch line, and the branch line rod 21 is bolted into the bolt hole 29 at the tip. 31, Natsu 32
After connecting the ends of the utility pole branch lines to the round rings of the branch rods and fully tensioning the wires, the work of backfilling the work hole is completed (Fig. 13).

(c) Problems to be solved by the invention In the above conventional technology, two resistance plates 19,
The locking plate 34 that connects the second resistance plate body 20
The branch rod 21 and guide plate 2 are fixed in such a way that they straddle the reinforcement groove 33 formed in the
4 was not allowed to be constructed integrally, and the branch rod 21 had to be separated from the first resistance plate 19.

Therefore, even if the first resistance plate 19 is driven in, the installation of the branch rod 21 remains as a separate work, which is the only thing that impairs the rationality of the work, and since they are separate members, the two resistance plates 19 and 20 are Even the task of packaging the product was complicated.

Further, the height of the reinforcing groove 33 is limited by the locking plate 34 fixed as described above, and the guide plate 24 fitted into the reinforcing groove 33 must have a certain width over its entire length. Moreover, the width of the guide plate 24 portion is extremely narrow compared to the direction plate 25 provided below.

Further, a tool receiver 2 is provided adjacent to the lower end of the guide plate 24.
6, the hammer impact during driving tends to concentrate near the lower end of the guide plate 24, which is narrow, and there is a fear that metal fatigue may occur in this area.

In order to prevent such metal fatigue of the guide plate 24, in the conventional technology, the guide plate 24 and the direction plate 25 are not integrally molded, but the guide plate 24 and the direction plate 25 are
As shown in the figure, the connecting plate 27 and the pin 28 are connected to each other in order to diffuse the vibrations generated by the hammer impact, but as a result, the process of assembling the first resistor plate 19 becomes extremely complicated, which reduces costs. It was causing a hindrance.

(d) Means for Solving the Problems In view of the above problems, the present invention integrates the branch rod and the first resistor plate body to streamline the construction and packaging work, and also eliminates the need for conventional methods. By revising the shaft-locking structure of the guide plate and integrally molding a wide guide plate that can withstand vibrations caused by hammer impact during driving, the number of component parts has been reduced and the assembly process has been simplified.

Due to these improvements, it is no longer possible to fix the locking plate on the second resistance plate body as in the past, so a pair of protrusions are provided with scissors between the reinforcing grooves in the second resistance plate body. Bolts and nuts are attached to the projecting piece to replace the conventional locking plate.

(E) Embodiment An example of the implementation of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a first resistance plate 1, and below a guide plate 2 having an inner arc edge 8 in the shape of a regular arc, there is a resistance plate 3 which is curved in the opposite direction to the inner arc edge 8. are integrally formed with a direction plate 7 in between.

At the upper end of the guide plate 2, each inner arc edge 8,
8' are aligned and the temporary guide plate 5 is extended with a limited joint amount 5', and a round ring 11 at one end of the branch rod 6 is loosely fitted on the outer arc side of the guide plate 2. A branch plate 4 is provided protrudingly.

Further, below the guide plate 2 and the inner arc edge 8, a tool receiver 10 is formed at a portion that intersects with the extension line of the resistance plate 3, and further below, a support edge 9 that coincides with the extension line of the inner arc edge 8 resists resistance. It is provided so as to largely protrude from the back side of the rear end of the plate 3.

The second resistance plate body 12 shown in FIG. 3 and FIG. 14' is the inner arc edge 8 of the guide plate 2.
The entire structure is curved to match.

A pair of projecting pieces 15, 15 each having a bolt hole 16 are provided on both sides of the rear end of the reinforcing groove 14,
By installing bolt 17 and nut 18, protrusion 1
5 and 15 can be connected.

Next, construction of the present invention having the above structure will be explained based on FIGS. 5 to 7.

First, a working hole A is excavated to facilitate the driving work and to place the part below the attachment point of the branch rod 6 into the soil at a specified depth, and then a hammer and a tool B are used to transmit the impact, as shown in Fig. 5. The first resistor plate 1 is driven into the state.

Next, the reinforcing groove 14 and the tall surface 14' of the second resistance plate body 12 are applied to the inner arc edges 8, 8' of the temporary guide plate 5 and the guide plate 2 exposed at the bottom of the hole, and the inner arc edges 8, 8' of the second resistance plate body 12 are applied. ，
8', the rear end of the second resistance plate 14 is struck until the projections 15, 15 pass through the branch plate 4, as shown in FIG.

After passing the bolt 17 through the pair of projecting pieces 15, 15 and fixing it with the nut 18, driving is continued, and as shown in FIG. The two resistance plates 1 and 12 are joined together at the point where they come into contact with each other.

After that, tap the temporary guide plate 5 from the side and bend it to below the specified depth. After backfilling the work hole A, tie the utility pole branch line C to the round ring 11' at the upper end of the branch line rod 6, and securely Tie the wire to complete all processes.

(f) Effects of the invention As described above, in the present invention, the second resistance plate 1
2 to the first resistance plate 1 is attached with bolts 17 and nuts 18 to a pair of protrusions 15, 15 protruding from both sides of the rear end of the reinforcing groove 14 of the second resistance plate. Since they are connected, it is possible to drive the second resistance plate 12 even if the first resistance plate 1 and the branch rod 6 are integrally connected in advance.

Therefore, the width of the guide plate 2 is not limited and narrow as in the prior art, but is formed as a wide enough guide plate 2 to prevent metal fatigue even in areas where hammer vibration is concentrated. This has made it possible to integrally mold each member from the direction plate 7 onwards, reducing the number of component parts and reducing costs.

Furthermore, since the branch wire rod 6 is formed integrally with the first resistance plate 1, the installation work of the branch wire rod, which was a separate work, can be omitted, and the work of attaching the branch wire rod, which was a separate work, can be omitted.
Even when packaging a set of three resistor plates (main resistor plate and branch wire rod), only the first and second resistor plates need to be combined, which has the advantage of streamlining construction and packaging work. It is a huge thing to deal with.

[Brief explanation of drawings]

Figure 1 is a side view of the first resistor plate, Figure 2 is a front view of the same as above, Figure 3 is a side view of the second resistor plate, Figure 4 is a front view of the same as above, Figures 5 to 7 are Explanatory diagrams showing the state of pouring work, Figures 8 to 13 show the prior art, Figure 8 is a perspective view of the first resistance plate body, Figure 9 is a perspective view of the first resistance plate body,
The figure is a perspective view of the second resistor plate as seen from the back.
The figure is a perspective view of the branch rod, and FIGS. 11 to 13 are explanatory views showing the state of pouring work. 1 - first resistance plate body, 2 - guide plate, 3 - resistance plate,
4~ Branch line plate, 5~ Temporary guide plate, 6~ Branch line rod, 7
~Directional plate, 11~Round ring, 12~Second resistance plate, 1
4~Reinforcement groove, 15~Protrusion piece, 16~Bolt hole, 17
~Boruto, 18~Natsuto.

Claims (1)

[Claims] 1. A first resistance plate body in which a guide plate having an inner arc edge in the shape of a regular arc, a resistance plate curved in the opposite direction to the guide plate are integrally molded via a direction plate, and a reinforcing groove is provided on the center line. In a ground anchor comprising a second resistance plate body having a square cross section which is curved so as to substantially match the inner arc edge of the guide plate, each inner arc edge may be aligned with the upper end of the guide plate. A temporary guide plate is extended, and a branch plate into which a round ring at one end of the branch rod is loosely fitted is protruded from the outer arc side to integrally connect the branch rod and the first resistance plate body, and A ground anchor characterized in that a pair of protrusions having bolt holes are formed on both sides of one end of the reinforcing groove of the second resistance plate.