JP2571192B2 - anchor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground anchor used for supporting poles such as telephone poles and antennas, as well as fences and trees for planting. In addition, the workability during casting is improved.

[0002]

2. Description of the Related Art There are various types of anchors known in the art, such as a type in which a plurality of resistance plates are developed and a type in which a single resistance plate having a complicated structure is developed. It has been proposed in consideration of the strength and cost of power.

[0003] Among the above-mentioned conventional anchors, the one based on a single resistance plate is, for example, an anchor (c) shown in FIG. 7, which is a reinforcing member (5a) (5b).
(5c) A resistance plate (5) in which (5d) is formed as a longitudinal line and front and rear reinforcing members (5a) among the reinforcing members
Pull bar (7) and reinforcing bar (8) coupled to (5b)
And a closing plate (6) fixed to the front reinforcing member (5a), and a driving tool receiver (9) fixed to the rear end of the resistance plate (5).

In order to drive the anchor (c) into the ground, a driving pipe (D) is inserted into a driving tool receiver (9) fixed to the rear end of the resistance plate (5), and then the driving is performed. Driving rod (E) in pipe (D) and through small hole (D3)
Insert

At this time, the small-diameter rod portion (E) of the driving rod (E)
The tip surface (E3) of (1) abuts a closing plate (6) formed on a front reinforcing member (5a) of the resistance plate (5), and is driven by a step (D1) formed in a driving pipe. A certain gap is held between the lower end surfaces (E5) of the large-diameter rod portions (E2) of the rod.

Next, when the driving rod (E) is moved up and down in the driving pipe, this kinetic energy is transmitted to the closing plate (6), and the anchor (c) enters the ground and reaches a predetermined depth. However, the anchor (c) driven in this way only exhibits a vertical state in the ground and cannot obtain a large earth pressure resistance (see FIG. (A)).

Therefore, the driving pipe (D) is left in the ground, and the driving rod (E) is inverted into the driving pipe (D) to insert the large-diameter rod (E2). E4) comes into contact with the step (D1) of the driving pipe (D), and when the driving rod (E) moves up and down, this kinetic energy is transmitted through the lower end face (D2) of the driving pipe (D). (5) is transmitted to the rear end portion, the resistance plate (5)
There is no small-diameter rod portion (E1) that constantly holds all the reinforcing members (5a) (5b) (5c) (5d) in the longitudinal line, so that the flexible plate (5) can be bent freely. The impact energy of the driving rod (E) is first determined by the distance (5 g) formed between the reinforcing members of the resistance plate (5) due to the presence of the resistance surface due to the closing plate (6) formed on the front side reinforcement member (5a). Only the tip of the resistance plate (1) is bent (FIG. (B)
reference).

With the further driving action of the driving rod (E), the resistance plate (1) bends one after another via the space (5g) between the other reinforcing members (5b), (5c) and (5d) to exhibit a deployed state. However, it enters into the ground of the pulling rod (7) and the auxiliary rod (8) fixed to the front side and the rear side of the resistance plate (5) and is fixed above the pulling rod (7). Tie ring (10)
Then, the auxiliary rod (8) is guided and moved, and both rods (7) and (8) are bound (see FIG. (C)).

The resistance plate (5) in the expanded state as described above.
With the pulling rod (7) and the auxiliary rod (8), the extended state is maintained when the pulling rod is pulled up, and a strong earth pressure resistance can be obtained.

[0010]

In the above-mentioned conventional anchor, an upper pull bar and an auxiliary bar are provided on the front side and the rear side of the resistance plate.
Since both rigid rods penetrate into the ground while cutting the soil, the inevitably generated cutting resistance is a major obstacle, making it impossible to improve workability. The necessity of tying the rod with these upper ends has been required to provide a tying tool, which has complicated the entire structure of the anchor and has a problem of high cost.

The present invention provides an anchor structure which solves the problems of the conventional anchor by replacing one bendable branch line with both the pulling rod and the auxiliary rod of the conventional anchor. It is.

[0012]

In order to solve the above-mentioned problems, a plurality of bulging reinforcing members (1a) (1b) (1c) are provided.
A resistance plate (1), an L-shaped resistance piece (2), and a bendable branch line (4). The L-shaped resistance piece is provided at the tip of the resistance plate (1). (2) is fixed,
The front end (4a) of the branch line (4) is coupled to the front reinforcing member (1a) of the resistance plate (1) and the resistance plate (1)
The anchor structure is such that the support line (4) extends over the upper end (3a) of a fulcrum member (3) formed so as to protrude above the rear side reinforcing member (1b).

[0013]

[Function] Anchor having the above structure (a)
Is a branch line that can be bent when it is driven vertically by a driving tool (b) to a predetermined ground depth.
Since only one anchor is provided, the resistance to the approach of the anchor (a) is extremely reduced, and the driving force is reduced even when the anchor (a) is deployed and driven underground.
After the deployment of the anchor (a) is completed, the anchor (a) is pulled up by the supporting line (4), but the front side and the rear side of the resistance plate (1) in the anchor (a) are supported by the supporting line (4) and the fulcrum member (3). In addition, since the branch line (4) is extended over the fulcrum member (3) and pulled up, even with a single branch line (4), the total earth pressure resistance obtained by the resistance plate (1) can be supported by the supported member. Is transmitted stably and reliably.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 shows an anchor (a), FIG. 1 (a) is a plan view, FIG. 1 (b) is a side view, and FIG. 1 (c) shows a state from the AA direction in FIG. 1 (a). The illustrated anchor includes a resistance plate (1), an L-shaped resistance piece (2) formed in front of the resistance plate (1), and a branch line whose end is connected to the front of the resistance plate (1). (4) and a fulcrum member (3) formed behind the resistance plate (1).

The resistance plate (1) has curved reinforcing members (1a) and (1b) divided on one side surface thereof.
These reinforcing members (1a) and (1b) are formed in a line along the longitudinal line of the resistance plate (1), and are formed with an appropriate interval (1g) therebetween. From such a configuration, it can be understood that the resistance plate (1) can be easily bent via the interval (1 g).

In the bending operation of the resistance plate (1), an appropriate horizontal hole (1h) is formed in order to make bending easier, but this horizontal hole (1h) can be formed if necessary. well,
Also, the interval (1) formed between the reinforcing members (1a) (1b)
The shape of g) may be parallel or may be formed by an inclined surface.

Further, the front reinforcing member (1a) of the resistance plate (1) has a notch (1) formed at the tip thereof.
f) One side (2b) having an opening (2c) into which the branch line (4) can be inserted is fitted and fixed to hold the L-shaped resistance piece (2), and the one side (2b) has a resistance plate A striking force is applied when the (1) goes straight into the ground, and the other side (2a) prevents the earth and sand from entering the curved reinforcing members (1a) (1b), and an anchor (a). ) Plays the role of obtaining the necessary resistance to deploy.

On the other hand, a fulcrum member (3) having a U-shape formed on the upper surface of the rear side reinforcing member (1b) and having a screw (3a) fixed to the open end thereof is fixed by, for example, fixing means such as welding. The branch line (4) is guided through the groove formed by the U-shape of the fulcrum member (3), and the screw (3a) keeps the resistance plate (1) bent by the branch line (4). When it is withdrawn, it functions as a fulcrum.

At the tip of the branch line (4), a retaining bracket (4)
d) is tightened and fixed, and the branch line (4) passing through the perforation (1e) formed at the tip of the reinforcing member (1a) on the front side is retained and locked below the perforation (1e). The other end of the branch line (4) is provided with a fastener (4b) forming a coupling portion (4c) for connecting to another support.

FIG. 6 shows another example of the anchor. FIG. 6 (a) is a side view showing a resistance plate having three reinforcing members (1a), (1b) and (1c). (1)
Although the number of reinforcing members was increased as compared with that shown in FIG. 1, this is suitable when a larger earth pressure resistance is required or when a smooth bending action is desired, and the like. The other figure (b) shows a state in which the anchor has been deployed and installed.

In order to drive the anchor of the present invention having the above structure into the ground, a driving tool as shown in FIG. 2 is used, for example. This driving tool (b) is composed of a driving pipe and a driving rod (C). The driving pipe has a step (A2) at the lower end thereof and a small hole (A4) at the step (A2). Pipe (A) whose upper end is also thick
And a core (B) having a large diameter head (B1) at the upper end and an engaging groove (B3) formed at the lower end surface, while the driving rod (C) is a middle rod. The long and short rods (C2) and (C) are placed above and below the large diameter part (C1)
3).

The driving tool (b) constructed as described above
, The core (B) has its head (B
1) After the step (A2) in the pipe (A) is locked and inserted by the step (B2) formed at the lower end, the drive (C) is inserted into the pipe (A). When the long rod portion (C3) of the rod (C) is inserted, the large diameter of the upper end surface (A1) of the pipe (A) and the driving rod (C) having a diameter larger than that of the upper end surface (A1). The head (B1) of the inserted core (B) is always separated from the part (C1).
The upper end face and the lower end face of the long rod portion (C3) of the driving rod (C) are always in a positional relationship to be in contact with each other, and the driving rod (C) is inverted to connect the short rod portion (C2) to the pipe ( When inserted into A), the upper end surface (A1) of the pipe (A) and the large-diameter portion (C1) of the driving rod (C) are always in contact, while the inserted core (B) is The upper end face of the head (B1) and the lower end face of the short rod portion (C2) of the driving rod (C) are always in a positional relationship separated by a predetermined interval.

The indicator (A5) formed on the upper part of the pipe (A) is a relative movement amount between the end of the branch line (4) and the driven pipe generated when the resistance plate (1) is deployed in the ground. And the degree of deployment of the anchor (a) in the ground can be measured.

In order to drive and install the anchor (A) into the ground using such a driving tool (b) (see FIGS. 3, 4, and 5), first, a core metal is attached to the pipe (A). (B) is inserted, and an L-shaped resistance piece (2) formed at the front end of the front reinforcing member (1a) of the resistance plate (1) in the engagement groove (B3) formed at the lower end of the core metal (B). One side (2b) of
The anchor (a) and the driving tool (b) are integrally set up so that the core metal extends along the curved shape of the reinforcing members (1a) and (1b).

Next, while keeping such an upright state, the long rod portion (C) of the driving tool (C) is inserted into the pipe (A).
3) is inserted, and the driving operation by the upward and downward movement of the driving tool (C) is started.

FIG. 3A shows a state in which the anchor is driven vertically to a predetermined depth. The kinetic energy of the driving rod (C) is such that only the tip of the long rod (C3) has a core metal ( B)
Of the head (B1).
1) through the step (B2), the step (A) of the pipe (A)
2) and through the lower end of the cored bar (B) to one side (2b) of the L-shaped resistance piece (2), so that the anchor (a) and the driving pipe (A) both enter the ground. Is a locking portion (4c) formed at the rear end of the branch line (4) and a pipe (A).
Does not move relative to the indicating portion (A5) formed in the first position.

Since the resistance plate (1) driven into the predetermined depth in this way is in a vertical state and cannot obtain a particular earth pressure resistance, the resistance plate (1) is developed to obtain a large earth pressure resistance. Needs come out.

FIG. 3B shows an initial state in which the resistance plate (1) driven into a predetermined position in the ground is developed.
Here, the driving rod (C) is withdrawn once, turned over, and the short rod (C2) is inserted into the pipe (A) to perform the driving operation again.

Only the large diameter portion (C1) of the driving rod (C) abuts on the upper end of the pipe (A) and the lower end (A) of the pipe (A).
The upper and lower kinetic energies of the driving rod (C) are transmitted to the rear end of the resistance plate (1) via 3), while the lower end of the short rod portion (C2) of the driving rod (C) is connected to the core metal (B). ) Head (B
1) Since the kinetic energy is separated from the upper surface by a predetermined length, the kinetic energy is not applied to the metal core (B), and the metal core (B) itself is applied to the pipe (A) by the driving rod (C). Since the engagement groove (B3) formed at the lower end of the cored bar (B) receives the reaction force by the impact force and moves in the direction in which the engagement between the engagement groove (B3) formed on the lower end of the L-shaped resistance piece (2) and one side (2b) is released. is there.

When a striking force is successively applied by the driving rod (C), the front reinforcing member (1a) released from the engaging groove (B3) of the cored bar (B) becomes an L-shaped resistance piece. (2) The resistance plate (1) starts bending and the anchor (a) starts deployment from the interval (1g) which is a bending point to receive a biased resistance on one side (2a). (A) shows such a state, in which the locking portion (4c) of the branch line (4) with respect to the mark portion (A5) of the pipe (A) moves relatively.

When the resistance plate (1) is further driven, the resistance plate (1) is moved forward by the front reinforcing member (1a) and the rear reinforcing member (1).
It bends until the interval (1g) between b) disappears, and the deployment of the entire anchor starts (see FIG. 4B).

FIG. 4 (c) shows a final stage in which the deployment of the desired anchor is substantially completed. At this time, the locking portion of the branch line (4) with respect to the mark (A5) of the pipe (A) is shown. It is natural that the relative movement position of (4c) is the predetermined position.

In this driving operation, the kinetic energy expended in pulling in the branch line (4) is extremely small, and if the lateral hole (1h) is formed in the bent portion of the resistance plate (1), the development can be performed more easily. It becomes possible.

After the anchor (a) is installed in the deployed state at a predetermined depth in the ground in this way, the driving tool (b) is pulled out, and the supporter (4) is engaged with the locking portion (4c) of the branch line (4). A coupling member is coupled so as to resist a predetermined upward pulling force (see FIG. 5). Earth pressure resistance generated in the resistance plate (1) is provided on the front side and the rear side of the resistance plate (1). Fulcrum (4) and fulcrum member (3), and fulcrum (4) is formed at the tip of fulcrum member (3).
Since it is pulled up after hanging over a), sufficiently stable support is possible with only one branch line.

The above-mentioned branch line (4) is a striated body or a strip having high flexibility and high tensile strength, and may be formed of a covered wire, a coated wire or the like in consideration of prevention of underground corrosion. Good.

The conventional resistance plate (1) has a single bent portion. However, it is necessary to increase the size of the resistance plate in order to obtain a greater earth pressure resistance. In the case where it becomes necessary to perform the deployment more easily, the bent portion of the resistance plate may be formed at a plurality of positions, and has a shape as shown in FIG. 6, and FIG. )
A curved central reinforcing member (1c) is formed between the central reinforcing member (1c) and the curved reinforcing member on the rear side (1b).
(b) is a side view of the resistor plate (1) with an interval (1 g) before and after c), and FIG. (b) shows the resistor plate (1) shown in FIG.
Represents a state in which it is bent and deployed at two bent portions in the ground.

[0037]

As described above, according to the anchor of the present invention, the number of parts is reduced and the structure is simplified, so that the production cost can be reduced. The resistance was also extremely reduced during the driving operation, and the degree of deployment of the anchor could be easily measured on the ground. Therefore, the installation of the anchor could be performed reliably and the workability could be improved.

[Brief description of the drawings]

FIG. 1 shows the entire structure of an anchor (a) of the present invention, in which a resistance plate (1) in which reinforcing members (1a) and (1b) bulging in a curved shape are formed in a vertical line, an L-shape. Resistance piece (2)
It is a figure which shows the connection relationship of a fulcrum member (3) and a supporting line (4), (a) is a top view, (b) is a side view, (c) of FIG. It is the side view seen from AA.

FIG. 2 shows a tool (b) for driving an anchor (a)
And shows the structure of a driving pipe and a driving rod (C) formed of a combination of a pipe (A) and a cored bar (B).

FIG. 3 shows a correspondence relationship between an anchor (a) and a driving tool during a driving operation, and FIG. 3 (a) shows a state where the anchor (a) is driven vertically to a predetermined depth in the ground;
FIG. 2B shows a state in which the anchor (a) is deployed underground.

4A and 4B show a state in which the anchors (a) are sequentially deployed. FIG. 4A shows a state in which the front-side reinforcing member (1a) has started to be deployed. FIG. 1a)
(C) shows a state in which the anchor (a) has almost completely expanded and the branch line (A5) of the pipe (A) with respect to the mark (A5). It is a state figure where the locking part (4c) of 4) moved relatively by the predetermined distance.

FIG. 5 shows a state where an anchor (a) is installed underground and a branch line (4) is pulled up.

FIG. 6 is different from the anchor (a) shown in FIG.
An anchor (a) in which three reinforcing members bulging in a curved shape are formed is shown. FIG. (A) is a side view, and FIG. (B) is a state diagram after deployment.

FIG. 7 shows a combination of a conventional anchor (c) and a driving tool, and FIG. 7 (a) is a state diagram when the anchor (c) is driven vertically to a predetermined depth, and FIG. The state in which the tip of the anchor (C) starts to be deployed is shown in FIG. (C). When the anchor (C) has completed the deployment, the anchor (C) is supported via both the upper draw (7) and the auxiliary rod (8). Shows the state connected to the body.

[Explanation of symbols]

B, anchor b, driving tool 1, 5, resistance plate 1a, 1b, 1c, 5a, 5b, 5c, 5d: reinforcing member bulging in a curved shape 1e: perforation 1f: notch 1g, 5g: spacing 1h Horizontal hole 2 Resistor piece 2a, 2b Both sides of resistor piece 2c Opening 3 Support member 3a U-shaped piece 3b Screw serving as fulcrum 4 Support line 4a Tip of branch line (4) Reference numeral 4b: tightening tool 4c: locking portion formed at the rear end of the branch line 4d: retaining device provided at the end of the branch line 6 ... closing plate 7 ... pulling rod 8 ... auxiliary rod 9 ... driving tool receiver 10 ... binding ring A ... Priving pipe A1 ... The upper end of the pipe A2 ... The step in the pipe A3 ... The lower end of the pipe A4 ... Small hole formed in the step (A2) A5 ... The mark part B ... The core metal B1 ... The head B2 ... The step B3: engagement groove C: driving rod C1: large diameter part C2: short rod part C3: long rod part D: punching Only pipe D1 ... Step in the driven pipe D2 ... Lower end face of the driven pipe D3 ... Small hole formed in the step (D1) in the driven pipe E ... Driven rod E1 ... Small diameter rod E2 ... Large diameter rod E3 … The lower end face of the small diameter rod part E4… the upper end face of the large diameter rod part E5… the lower end face of the large diameter rod part

Claims (1)

(57) [Claims] 1. A plurality of bulging reinforcing members (1a) (1b).
(1c) is composed of a resistance plate (1) formed into a longitudinal stripe with an interval (1g) (5g) at intervals (1g) (5g), an L-shaped resistance piece (2) and a bendable branch line (4), and the reinforcing member , A tip (4a) of a branch line is connected to an upper portion of the front reinforcing member (1a), and one side (2b) of the L-shaped resistance piece (2) is connected to a tip of the front reinforcing member (1a). Meanwhile, a fulcrum member (3) is formed on the rear side reinforcing member (1b) of the reinforcing member so as to protrude upward, and the supporting line (4) is formed.
An anchor is characterized in that it is constructed so as to extend over an upper end (3a) of the fulcrum member (3).