CN220468842U - Screw anchoring piece for emergency flood-passing protection material of small earth-rock dam face - Google Patents

Abstract

The utility model discloses a screw anchoring piece of a small earth-rock dam face emergency flood-passing protection material, which belongs to the technical field of flood-fighting equipment and comprises an anchor rod, a pressing plate piece, a screw rod and a nut; the utility model provides a novel anchor rod, including the stock, conical head and anchor piece, the lower extreme of the stock is connected with conical head, and the lower extreme surface of stock is connected with the anchor piece, the anchor piece sets up to single circle spiral line and arranges in the top of conical head, the stock sets up to hollow tubular, the upper end surface of the stock is provided with the draw-in groove, the draw-in groove sets up to "concave" word form, the external diameter of screw rod and the internal diameter looks adaptation of the stock, this scheme both can improve anchor assembly resistance to plucking, increases dam face unit area contact friction, reduces the number of anchor assembly that the unit area used, can adopt ordinary electric drill to assist anchor assembly to go into ground and assembly construction again, improves emergent rescue construction efficiency.

Description

A kind of spiral anchor for emergency flood protection material on the dam face of small earth-rock dam

Technical field

The utility model relates to the technical field of flood-fighting equipment, and is specifically a spiral anchor for emergency flood protection materials on the dam surface of a small earth-rock dam.

Background technique

It is urgent to develop key technologies for emergency over-flooding of earth-rock dams caused by sudden large floods in small reservoir earth-rock dams or limited flood flow in spillways. Among them, the development of anchors for fixing emergency over-flood protection materials on the dam face is particularly important.

Currently, the commonly used anchors for dam surface emergency flood protection materials are mainly smooth round anchors and ribbed anchors. The anchors mainly rely on the friction between the surface of the anchor rod and the soil to generate pull-out force. The main influencing factors of pull-out force are: Dam material type, anchor burial depth and anchor type. Under the same dam material type, the smaller the diameter of the anchor, the smaller the contact area between the surface of the anchor rod and the soil. The pull-out resistance of the anchor under the same burial depth. The smaller the force, the greater the number of anchors used per unit area of emergency flood protection materials on the dam surface. The larger the diameter of the anchors and the deeper the burial depth, which also increases the difficulty of emergency rescue construction.

To this end, we propose a spiral anchor for emergency flood protection materials on the dam surface of small earth-rock dams.

Utility model content

The purpose of this utility model is to provide a small earth-rock dam face emergency flood protection material spiral anchor to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solution: a small earth-rock dam dam surface emergency flood protection material spiral anchor, including an anchor rod, a pressure plate piece, a screw rod and a nut;

The anchor rod includes a rod body, a cone head and an anchor piece. The lower end of the rod body is connected to a cone head, and the lower end surface of the anchor rod is connected to an anchor piece. The anchor piece is set as a single-turn spiral pattern and is arranged above the cone head. The rod body is set in a hollow tubular shape, and the upper end surface of the rod body is provided with a slot. The slot is set in a "concave" shape. The outer diameter of the screw rod matches the inner diameter of the rod body. One end of the screw rod is provided with a groove. There are threads and the other end is smooth. The surface of the smooth end of the screw is connected with a buckle. The buckle matches the slot. The nut matches the thread on the upper end of the screw. The pressure plate is set as Disc-shaped, the center position of the pressure plate piece is provided with a round hole, the diameter of the round hole matches the outer diameter of the rod body, and the diameter of the pressure plate piece is the same as the diameter of the anchor piece.

Preferably, the diameter of the anchor piece is 10-15 times the diameter of the rod body, and the pitch of the anchor piece is 0.5-1 times its own diameter.

Preferably, the cone head and anchor piece are welded to the rod body.

Preferably, the cone head is set to be solid.

Preferably, the distance between the top of the slot and the end of the rod body is greater than 35 mm.

Preferably, the card slot is composed of a vertical slot A, a connecting slot, and a vertical slot B. The vertical slot A and the connecting slot are vertically distributed, the connecting slot and the vertical slot B are vertically distributed, and the vertical slot A is completely The port that runs through the anchor.

Preferably, the anchor rod, pressure plate piece, screw rod, and nut are made of steel, stainless steel, or iron.

Preferably, the upper part of the screw rod is welded with a truncated drill bit matched with the electric drill.

Compared with the existing technology, the beneficial effects of this utility model are: this solution can not only improve the pull-out resistance of anchors, increase the contact friction per unit area of the dam surface, reduce the number of anchors used per unit area, but also can use ordinary The electric drill assists the anchoring and assembly construction, improving the efficiency of emergency rescue construction.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a schematic side view of the structure of the present utility model;

Figure 3 is an enlarged schematic diagram of the structure at point A in Figure 1 of the present invention.

In the picture: 1. Anchor rod; 11. Rod body; 12. Cone head; 13. Anchor piece; 14. Card slot; 141. Vertical slot A; 142. Connecting slot; 143. Vertical slot B; 2. Pressure plate piece; 3 , screw; 4. nut; 5. buckle.

Detailed ways

Embodiment 1

Please refer to Figures 1-3. This utility model provides a technical solution:

A small earth-rock dam surface emergency flood protection material spiral anchor, consisting of an anchor rod 1, a pressure plate piece 2, a screw rod 3, and a nut 4;

The anchor rod 1 is composed of a rod body 11, a cone head 12, and an anchor piece 13. The cone head 12 is connected to the lower end of the rod body 11, and the anchor piece 13 is connected to the lower end surface of the rod body 11. The anchor piece 13 is set as a single-turn spiral pattern and is arranged on the cone. Above the head 12, the diameter of the anchor piece 13 is 10-15 times the diameter of the rod body 11, and the pitch is 0.5-1 times the diameter of the anchor piece. The cone head 12 and the anchor piece 13 are both welded to the rod body 11 to improve the solidity of the overall structure, and The cone head 12 is set to be solid, and the rod body 11 is set to be hollow tubular. The upper end surface of the rod body 11 is provided with a clamping slot 14. The top of the clamping slot 14 is not less than 35mm from the end of the rod body 11. The clamping slot 14 is set in a "concave" shape. 14 consists of a vertical groove A141, a communication groove 142, and a vertical groove B143. The vertical groove A141 and the communication groove 142 are vertically distributed, the communication groove 142 and the vertical groove B143 are vertically distributed, and the vertical groove A141 completely penetrates the port of the anchor rod 1;

The outer diameter of the screw rod 3 matches the inner diameter of the rod body 11. One end of the screw rod 3 is threaded and the other end is smooth. A buckle 5 is connected to the surface of the smooth end of the screw rod 3. The buckle 5 matches the slot 14. The buckle 5 can be inserted into the card slot 14, and the sequence of inserting the buckle 5 into the card slot 14 is vertically inserted into the vertical slot A141, rotated into the communication slot 142, lifted up and inserted into the vertical slot B143, and further passed through the card slot 14 Limit the buckle 5 so that the screw rod 3 cannot be pulled out from the slot 14;

The nut 4 matches the thread on the upper end of the screw 3. The pressing plate 2 is arranged in a disk shape. A round hole is provided at the center of the pressing plate 2. The diameter of the round hole matches the outer diameter of the rod 11. At the same time, the pressing plate 2 The diameter is the same as the diameter of the anchor piece 13;

Anchor rod 1, pressure plate 2, screw rod 3, nut 4 are made of steel, stainless steel, iron and other materials;

In order to facilitate the fast screwing of the anchor rod 1 into the soil, a truncated drill bit matched with the electric drill is welded to the upper part of the screw rod 3 as an installation tool for the anchor rod 1.

Steps for installing and embedding spiral anchors:

Step 1: Before the overflow flood exceeds the standard, clean up the dam top and downstream dam slope, and carry out half-excavation and half-fill emergency flood channel construction along the downstream dam slope;

Step 2: Install the anchor rod installation tool on the supporting electric drill at the anchor point where the anchor rod needs to be installed in the flow channel and its slope. Place the conical section of the anchor rod downward at the anchor point, screw the lower end of the installation tool into the slot at the upper end of the anchor rod, hold the electric drill firmly, turn on the power switch, and drill the anchor rod into the soil until the upper end leaks out of the ground by about 3cm;

Step 3: Lay geotextile (or cement blanket) and other dam surface protective materials in the flow channel and on the fill slopes on both sides of the flow channel.

Step 4: At the anchor installation site, locate the specific location of the anchor by identifying the surface bulges of the geotextile (or cement blanket), and pierce the geotextile (or cement blanket) with a pointed cone to leak out the anchor.

Step 5: Rotate the anchor rod and screw rod clockwise through the "concave" shaped slot and buckle, and then tighten them with the nut matching the screw rod to compress the pressure plate with the geotextile (or cement blanket).

The pull-out force of the spiral enlarged head anchor mainly depends on the gravity of the soil within the action range of the end anchor piece of the anchor and the resistance of the slip surface. It is an end-pressure anchor.

The invention relates to a spiral enlarged head anchor fixed with emergency flood protection material on the dam surface of a small reservoir earth-rock dam, which can not only improve the pull-out resistance of the anchor, increase the contact friction per unit area of the dam surface, but also reduce the cost of using the anchor per unit area. In addition, ordinary electric drills can be used to assist anchoring into the ground and assembly construction to improve the efficiency of emergency rescue construction.

Claims (8)

1. The utility model provides a emergent flood protection material screw anchor of small-size earth-rock dam facing which characterized in that: comprises an anchor rod (1), a pressing plate (2), a screw (3) and a nut (4);

the utility model provides a stock (1) is including body of rod (11), conical head (12) and anchor piece (13), and the lower extreme of body of rod (11) is connected with conical head (12), and the lower extreme surface connection of stock (1) has anchor piece (13), anchor piece (13) set up to single circle spiral line and arrange in the top of conical head (12), body of rod (11) set up to hollow tube, the upper end surface of body of rod (11) is provided with draw-in groove (14), draw-in groove (14) set up to "concave" word form, the external diameter of screw rod (3) and the internal diameter looks adaptation of body of rod (11), the one end of screw rod (3) is provided with screw thread and the other end is smooth form, the smooth end surface connection of screw rod (3) has buckle (5), the screw thread looks adaptation of buckle (5) and draw-in groove (14) looks adaptation, the central position of nut (4) and screw rod (3) upper end, the setting up of clamp plate piece (2) is discoid, the diameter of clamp plate piece (2) is provided with the external diameter of clamp plate (13) looks diameter of clamp plate (2) and diameter of clamp plate (11) looks.

2. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the diameter of the anchor sheet (13) is 10-15 times of the diameter of the rod body (11), and the screw pitch of the anchor sheet (13) is 0.5-1 times of the diameter of the anchor sheet.

3. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the cone head (12) and the anchor sheet (13) are welded on the rod body (11).

4. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the conical head (12) is solid.

5. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the top distance of the clamping groove (14) from the end part of the rod body (11) is larger than 35mm.

6. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the clamping groove (14) is composed of a vertical groove A (141), a communicating groove (142) and a vertical groove B (143), wherein the vertical groove A (141) and the communicating groove (142) are vertically distributed, the communicating groove (142) and the vertical groove B (143) are vertically distributed, and the vertical groove A (141) completely penetrates through a port of the anchor rod (1).

7. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the anchor rod (1), the pressing plate (2), the screw rod (3) and the nut (4) are made of steel materials or stainless steel materials or iron materials.

8. The spiral anchoring member of the emergency flood protection material for the dam face of the small earth-rock dam according to claim 1, wherein: the upper part of the screw rod (3) is welded with a truncated drill bit matched with an electric drill.