JPH0354178Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is used to exert resistance against uprooting by changing the posture after being driven into the ground, and to tie standing trees, temporary buildings, etc. to the ground. The present invention relates to an anchor used for.

[Conventional technology]

As shown in FIG. 18, the above-mentioned anchor is made by machining the circumferential wall of one end of the cut round pipe 1' that will be rearward when it is driven in to form a curved part 1'A that curves outward. At the same time, this curved portion 1'A
It is known that a mounting portion 3' for a traction rope 2' is provided approximately at the center of the peripheral wall of the round pipe 1' on a side different from the round pipe 1'. This anchor has a constricted portion 1' at the tip.
The rod-shaped driving tool shown by the dashed line in the figure comes into contact with B.
After being driven into the ground by D', when the towing rope 2' is pulled, it rotates around the curved part 1'A that bites into the soil as a fulcrum, and a tensile force is applied to the towing rope 2'. (For example, Japanese Patent Publication No. 57-43695)
(see publication).

[Problem that the invention attempts to solve]

In the case of the conventional structure described above, since the main body of the anchor is a cut round pipe, it is relatively easy to drive it into the ground, but it cannot resist the tensile force acting through the traction rope. In this position, the part that comes into contact with the ground and exerts a resistance force is the outer circumferential surface of the round pipe, which is inclined with respect to the pulling direction, making it difficult to obtain a large pulling resistance force. .

In view of the above-mentioned circumstances, the purpose of this invention is to provide an anchor that has a large resistance to tensile force and that can be installed by driving into the ground without any problem.

[Means for solving problems]

The characteristic structure of the anchor according to this invention is that it is equipped with a flat resistance plate and a propulsion stabilizing plate for driving, and two attachment parts for fixing two traction tools to the propulsion stabilizing plate are attached in the driving direction. They are provided at intervals, one of which is located at the bottom in the driving direction and away from the resistance plate, and the other mounting part is located at the top in the driving direction and close to the resistance plate. This is because it was established in

[Effect]

In other words, when an anchor with two traction tools attached and a resistance plate in an upright position is driven into the ground using a driving tool, the resistance plate is flat, so it moves straight in the driving direction and reaches a predetermined depth. When the anchor is reached, the traction device fixed to the mounting part on the propulsion stabilizing plate, which is located on the lower side in the driving direction and away from the resistance plate, is fixed on the ground, and further force is applied to the anchor in the driving direction. When applied, the anchor rotates using this attachment part as a fulcrum, and its posture is adjusted so that the resistance plate, which has a large area, assumes a pull-out resistance posture that is approximately perpendicular to the direction in which the tensile force of the traction tool is applied. It is possible to obtain a large pull-out resistance force. The attachment part to which the traction tool used at this time is connected is located away from the resistance plate and on the lower side of the stabilizing plate in the driving direction, so that the driving force is applied to the directional line and the traction tool. The distance between the anchor and the pulling direction line is large, and the rotational moment acting around the mounting portion is large, so the anchor can be easily rotated with a small force.

Since the two attachment parts for fixing the two traction tools are provided at intervals in the driving direction,
When the posture of the anchor is changed, both attachment parts are positioned at a distance from each other in a direction substantially perpendicular to the direction in which the pulling force from the traction tool is applied.
The posture of the anchor is stabilized in a state in which a tensile force is applied to both the book pulling tools, and the large pull-out resistance provided by the plate-shaped resistance plate can be fully exerted.

In addition, it is equipped with a propulsion stabilizing plate along the driving direction, which stabilizes the posture during driving and provides an anchor.
can be guided in a predetermined driving direction. In addition, the anchor can be retrieved by pulling out the towing tool fixed to one of the attachment parts of the anchor used to change the anchor posture described above, and then driving the attachment part close to the resistance plate and on the stabilizing plate. Since it is installed on the upper side in the pulling direction, the anchor rotates in the opposite direction to the above-mentioned direction using this mounting part as a fulcrum due to the resistance of the soil that accompanies pulling out, and the resistance plate assumes an upright position with less pulling resistance. Can be easily collected.

[Effect of idea]

B. As mentioned above, for the applied tensile force, 2
By using a book traction tool and opposing it with a plate-shaped resistance plate, it became possible to obtain a large pulling resistance force in a stable posture.

(b) Although a flat resistance plate is used, by providing a propulsion stabilizing plate to stabilize the posture during driving, the applied driving force is applied only in the driving direction, and the driving force is applied in the specified direction and depth. It has become easier to drive into the hole.

C.Furthermore, by specifying the mounting positions of the two towing tools on the propulsion stabilizer plate as described above,
It is now possible to easily change the anchor posture by driving it in, and recover the anchor body by pulling it out, with a small amount of force.

D. Furthermore, the attitude of the anchor can be changed at any depth, making it possible to install the anchor at a desired depth.

That is, the unique effect of the anchor according to the present invention is that it can achieve all of the above-mentioned effects A, B, C, and D.

〔Example〕

Examples of this invention will be described below based on the drawings.

As shown in Figures 1 to 5, the anchor A according to this invention has a resistance plate R that exerts a pulling resistance force when located in the ground - A is composed of a propulsion stabilizing plate S that guides the vehicle so that it faces in a predetermined direction. This anchor A is made by welding and fixing a pair of small pieces 1 of angle steel, and one side 1a, 1 of the pair of small pieces 1 of angle steel that are joined to each other.
A propulsion stabilizer plate S is constituted by a. Further, the other side portions 1b, 1b form a resistance plate R having substantially the same planar shape.

Both the resistance plate R and the propulsion stabilizing plate S have their tip portions tapered in the width direction, so that they can be easily driven into the ground G during the driving work of this anchor A, which will be described later. It is configured. In addition, 1c in the figure is a rib for reinforcement.

Two attachment portions 3a and 3b are formed in this portion of the propulsion stabilizing plate S to which a pair of tie rods 2a and 2b, which are an example of the traction tool 2, are respectively attached. These two attachment portions 3a and 3b are located at different positions relative to the resistance plate and are formed at intervals in the longitudinal direction of the propulsion stabilizing plate S, that is, in the driving direction X of the anchor A. Specifically, the mounting portion 3a is provided at a position farther from the resistance plate R on the lower side in the driving direction X, and the mounting portion 3b is provided at a position closer to the resistance plate R on the upper side in the driving direction X.

This will be described later, but when it is driven to a predetermined position in the ground G, the mounting part 3 located below
While the tie rod (hereinafter referred to as the lower tie rod) 2a attached to A is fixed to the surface of the ground G, force is further applied in the driving direction to rotate the anchor A and hang it on the tie rods 2a and 2b. In order to easily change the posture shown in Fig. 5, which can effectively resist the tensile force, in this changed posture, the tensile force acting on the two tie rods 2a and 2b is perpendicular to the direction in which the tensile force is applied. In order to stabilize the posture of anchor A by providing resistance at different positions in the direction of
When recovering anchor A, pull out the tie rod 2b attached to the attachment part 3b.
The purpose is to rotate it to an upright position and reduce the resistance to pull it out so that it can be recovered.

Next, a method of constructing this anchor A will be explained.
A dedicated driving tool _D1 is used to drive this anchor A into the ground G. As shown in FIG. 6, this driving tool D ₁ includes a cylindrical body 4 consisting of a steel pipe 4A and a pair of ferrules 4B and 4C welded to both ends thereof, and a cylindrical body 4 that is fitted inside the cylindrical body 4. It is composed of a rod member 5. A pair of caps 4B and 4C of the cylindrical body 4 are
Each is formed by heat treating carbon steel [S45C or S55C].

As shown in FIGS. 6 to 9, the ends of the pair of caps (hereinafter referred to as lower caps) 4B of the cylindrical body 4 are provided with a resistance plate R of an anchor A and a propulsion stabilizing plate S. Three slots 4a are formed to fit into each slot. Additionally, as shown in Figures 6 to 8,
A plug 6 is fitted over the steel pipe 4A of the cylindrical body 4 and the lower mouthpiece 4B. This plug 6 consists of a large diameter part 6a and a small diameter part 6b, and on the other hand, the tip side from the middle part of the lower mouthpiece 4B of the cylindrical body 4 is formed to have a small diameter so that only the small diameter part 6b of the plug 6 can pass through. ing.

Further, the rod member 5 includes a pair of rod parts 5A and 5B that can be fitted into the cylindrical body 4, and an end of the other cap (hereinafter referred to as the upper cap) 4C of the cylindrical body 4 located between them. It is composed of a weight portion 5C that comes into contact with the edge. One rod part 5A is fitted into the cylindrical body 4 and the weight part 5C is in contact with the edge of the upper mouthpiece 4C of the cylindrical body 4, as shown in FIG. The length is such that there is a slight gap between it and 6. The other rod portion 5B is
When the plug 6 is fitted into the cylindrical body 4, its tip abuts the large diameter portion 6a of the plug 6, as shown in FIG.
It is formed in such a length that it protrudes toward the distal end side of the cylindrical body 4 until it comes into contact with the stepped portion of the lower mouthpiece 4B.

Furthermore, a locking pin 5a is implanted at the tip of the longer rod portion (hereinafter referred to as a protruding rod portion) 5B so as to slightly protrude from the circumferential surface thereof to both sides. and Figures 6 to 8 and 10.
As shown in the figure, the upper cap 4C of the cylindrical body 4 includes
A locking tool 7 having an opening 7A having an overhang 7a through which the locking pin 5a can pass is screwed together.

That is, in order to perform an ejection operation on the plug 6, the ejection rod portion 5B may be inserted into the cylindrical body 4 at a position where the locking pin 5a passes through the protruding portion 7a. When the protruding operation of the plug 6 is completed (as will be described later, at this time, the position of the anchor A has also been changed and the driving work has been completed), turn the rod member 5 slightly and pull it up. Stop pin 5
a is locked to the lower surface of the locking tool 7 at a position different from the overhang 7a, and then a pulling force is applied to the rod member 5, so that the cylindrical body 4 can be pulled out from the ground G. It is composed of

When the shorter rod part (hereinafter referred to as the driving rod part) 5A is pushed into the cylindrical body 4, the plug 6 does not move, and the driving force applied to this rod member 5 is applied to the cylindrical body 4. through that slot 4
The signal is transmitted to the anchor A which is fitted and held by the anchor A. In addition, when the protruding rod portion 5B is pushed into the cylindrical body 4, the plug 6 is protruded by applying a driving force to the rod member 5, and accordingly, the anchor A is pushed into the cylindrical body 4. body 4 slot 4
Most of it comes out of a, and it comes to be fitted and held only by a part of it.

In this state, the large-diameter portion 6a of the plug 6 comes into contact with the stepped portion of the lower mouthpiece 4B of the cylindrical body 4, and the lower opening of the cylindrical body 4 is closed, so that the earth and sand are trapped inside the tube. Entrance into the shaped body 4 is prevented.

When driving anchor A into the ground G,
First, the anchor A to which the two tie rods 2a and 2b are attached is fitted and held in the slot 4a of the cylindrical body 4 into which the driving rod portion 5A of the rod member 5 is fitted, and is positioned at the driving point. (See Figure 11a).
Next, by moving the rod member 5 up and down,
A driving force is applied to the anchor A from the weight part 5C of the rod member 5 through the cylindrical body 4, and the anchor A is
are successively driven into the ground G (see Figure 11B and Figure 7).

Ring 2aa formed at the upper end of the lower tie rod 2a
Once anchor A is driven in until it almost reaches the surface of the ground G, stop driving anchor A,
Push the pipe or rod 8 into the ring 2aa of the lower tie rod 2a. Then, the driving rod part 5A is pulled out and the protruding rod part 5B is attached to the cylindrical body 4.
Push it in again and resume driving work (see Figure 11 C). As a result, the plug 6 is pushed downward, and a downward force is applied to the anchor A. At this time, since the lower tie rod 2a does not move, the application of driving force causes the anchor A to rotate around the attachment part 3a to which the lower tie rod 2a is attached (see Figures 11D and 8). (see figure).

A tie rod (hereinafter referred to as the upper tie rod) 2b is attached to the upper attachment part 3b.
The length of the resistance plate R of the rotated anchor A is 2
The ring 2ba at the upper end thereof is formed so as to reach the surface of the ground G when the book tie rod 2a, 2b assumes a posture substantially perpendicular to the direction in which the tensile force is applied. Therefore, the attitude of anchor A can be confirmed from the outside.

After this posture is taken, the wire 9 attached to the tree T is locked to the ring 2ba of the upper tie rod 2b and the ring 2aa of the lower tie rod 2a (see FIG. 11E). The drawing shows a tree T tied to the ground G by a pair of anchors A, but the anchors A of this invention can also be used for temporary buildings such as tents and prefabricated light steel frame houses. It can be used for fastening, or as an earth anchor for supporting a retaining wall.

It is also possible to use another driving tool _D2 to drive the anchor A into the ground G. As shown in FIG. 12, this driving tool _D2 includes a bottomed cylindrical body 10 consisting of a steel pipe 10A, a cap 10B and a stopper 10C welded to both ends of the steel pipe, and an inner part of the bottomed cylindrical body 10. The rod member 11 is fitted into the rod member 11. The cap 10B and plug 10C of the bottomed cylindrical body 10 are each formed by heat treating carbon steel [S45C or S55C].

At the lower edge of the stopper 10C of the bottomed cylindrical body 10, a first
As shown in Figure 2, Figure 13, and Figure 15,
Three slots 10a are formed to fit into the resistance plate R and the propulsion stabilizing plate S of the anchor A, respectively.

The rod member 11 includes a pair of rod members 11A and 11B that can be fitted into the bottomed cylindrical body 10, and a weight portion that is located between them and comes into contact with the edge of the base 10B of the bottomed cylindrical body 10. 11C. Both rod portions 10A and 10B are fitted inside the bottomed cylindrical body 10, and the weight portion 11C is attached to the bottomed cylindrical body 10.
The length is such that a gap is created between the tip and the stopper 10C of the bottomed cylindrical body 10, as shown in FIGS. .

At the tip portions of the two rod portions 11A and 11B, there are locking pins 1 that slightly protrude from the circumferential surface on both sides.
1a and 11b are planted. And the 12th
As shown in FIGS. 14 and 17, this locking pin 1 is attached to the base 10B of the bottomed cylindrical body 10.
An opening 10X having a protrusion 10b through which objects 1a and 11b can pass is formed.

To fit the rod portion 11A or 11B of the rod member 11 into the bottomed cylindrical body 10, insert the rod portion 11A or 11B at a position where the locking pin 11a or 11b passes through the protruding portion 10b. What is necessary is just to insert it into the bottomed cylindrical body 10. When the posture of the anchor A, which will be described later, has been changed and the driving work is completed, the rod member 11 is turned slightly and pulled up, and the locking pin 11a or 11b is inserted into the base at a position different from the protrusion 10b. After being locked to the lower surface of the rod member 10B, the bottomed cylindrical body 10 can be pulled out from the ground G by applying a pulling force to the rod member 11.

In order to securely lock onto the bottom surface of the base 10B, two locking pins 11a and 11b are provided.
A flat abutment surface 11S is formed at a portion protruding from the circumferential surface of each of the rod members 11A, 11B.

In order to drive the anchor A, either the rod portion 11A or 11B of the rod member 11 is inserted into the bottomed cylindrical body 1.
This is done by moving the rod member 11 up and down or hitting it with a hammer or the like while the rod member 11 is fitted into the hole. The driving force applied to the rod member 11 is transmitted through the bottomed cylindrical body 10 to the anchor A fitted and held in the slot 10a (see FIGS. 13 and 15).

Once the anchor A is driven into the ground G to a predetermined position, the driving operation is temporarily stopped, and the bottomed cylindrical body 10 is
Pull up slightly and rotate about half a turn. This lifting of the bottomed cylindrical body 10 is performed by locking one of the locking pins 11a or 11b described above with the lower surface of the base 10B. Then, the lower tie rod 2a is fixed to the ground G and driving is restarted.

In this state, the anchor A is released from the fit and hold by the slot 10a, and the portion of the tip of the plug 10C where the slot 10a is not formed becomes the anchor.
The anchor A is rotated and its posture is changed by the driving force applied to the rod member 11 and transmitted through the bottomed cylindrical body 10. (See Figures 14 and 16).

That is, by using this driving tool _D2 , it is possible to drive the anchor A and change the posture even if either rod portion 11A or 11B of the rod member 11 is fitted into the bottomed cylindrical body 10. can. Moreover, the rod portion (11B) protrudes from the other bottomed cylindrical body 10.
Or 11A), it can be used as a grip bar during anchor A driving work.

In the previous embodiment, the towing tool 2 includes a pair of tie rods 2a and 2b, and a ring 2aa at the tip.
2ba is used, and the tying wire 9 is locked to the rings 2aa and 2ba.
Alternatively, wires attached to the attachment parts 3a, 3b of the anchor A and marked at positions corresponding to the rings 2aa, 2ba may be tied directly to the object T, such as a standing tree. In addition, as the traction device 2, it is possible to use a rope, a chain, or the like.

Further, in order to attach the traction tools 2, instead of providing the attachment parts 3a and 3b on the anchor A, a ring or a shackle may be fixed thereto.

In addition, in the previous embodiment, the anchor A was constructed by welding two small pieces 1 of angle steel, but instead of this, it may be formed by cutting a T-shaped steel, or by welding two small pieces 1 of angle steel. It may also be formed by butt welding flat bars. Also, its longitudinal cross-sectional shape is
Instead of T-shape, use U-shape, cross-shape, or H-shape.
It may be a shape.

The tip portions of the resistance portion R and the propulsion stabilizing plate S may be tapered in the thickness direction instead of being tapered in the width direction as explained in the previous embodiment. , and may also be used in combination.

Note that although numbers are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

1 to 17 show an embodiment of the anchor according to this invention, in which FIG. 1 is a perspective view, FIG. 2 is a side view, FIG. 3 is a front view, FIG. 4 is a plan view, and FIG. The figure is a side view showing the working position of the anchor in the ground.
FIG. 6 is a sectional view of the driving tool, FIG. 7 is a sectional view showing the positional relationship between the driving rod and the plug, and FIG. 8 is a sectional view showing the positional relationship between the protruding rod and the plug. Fig. 9 is a bottom view of the driving tool, Fig. 10 is a sectional view taken along the line X-X in Fig. 7, Fig. 11 A to E are sectional views showing the anchor construction process, and Fig. 12 is another driving tool. A cross-sectional view of the driving tool. Fig. 13 is a cross-sectional view showing the positional relationship between the anchor and the driving tool when driving the anchor. Fig. 14 is a cross-sectional view showing the position of the anchor and the driving tool when changing the posture of the anchor. A sectional view showing the relationship, Figure 15 is an anchor
Figure 16 is a bottom view of the driving tool when driving the anchor.
Figure 17 is a bottom view of the driving tool when changing its posture.
FIG. 3 is a sectional view taken along line X-X in FIG. 3; 18th
The figure is a sectional view showing a conventional example. 2... Traction tool, 3a, 3b... Mounting part, R...
Resistance plate, S... Propulsion stabilizer plate, X... Drive direction.

Claims (1)

[Claims for Utility Model Registration] 1. Flat resistance plate R and driving stabilizing plate S
and two traction devices 2 on the propulsion stabilizer S.
Two mounting parts 3a and 3b for fixing are provided at intervals in the driving direction and the other mounting portion 3b is
An anchor provided at a position close to the resistance plate R on the upper side in the driving direction X. 2. The anchor according to claim 1, wherein one end of the resistor plate R is formed into a tapered shape.