JPS6117064Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a fixture for fixing lath (reinforcement net), which is the core material of mortar or concrete, in a predetermined position during slope reinforcement work by spraying mortar or concrete. be.

This slope protection lath fixing device fixes the lath in a floating state at an appropriate distance from the slope surface, and when spraying slope reinforcing materials such as mortar or concrete, the lath is wrapped to a predetermined depth. This is to ensure that the

In general, unlike other concrete works, slope reinforcement work does not use formwork and directly pours reinforcing materials such as mortar and concrete according to the unevenness of the terrain. It is easily affected by the shape of the slope, geology, etc. Therefore, if the lath is simply spread out and laid on the slope, the lath will be close to the slope at the protruding corners of the slope and will rise more than necessary in the recesses. Additionally, if the soil on the slope is soft, the lath will be buried in the soil. Therefore, when slope reinforcing materials such as mortar or concrete are sprayed onto these laths, the reinforcing material layer is thicker at the concave parts of the slope and thinner at the protruding corners, making it easy for the slope reinforcing material to peel off, crack, etc. In addition, the finished appearance often deteriorated. As described above, by simply spreading the lath on the slope surface, it was not possible to make the lath function sufficiently as a core material for mortar or concrete layers. For this reason, in order to raise the lath at an appropriate distance above the slope, methods such as laying concrete pieces or pebbles under the lath, or tying the lath to anchor pins with wire, etc. are used. was. However, these methods have the disadvantage of requiring a large number of man-hours, and when placing concrete pieces or pebbles under the lath, the weight of the worker is added in addition to the own weight of the lath, making it difficult to work on extremely uneven or steep slopes. It was difficult to work on sloped areas, and it was not easy to arrange the lath at the appropriate position as the core material of the reinforcing material.

The present invention was developed in order to solve the problems in the prior art as described above, and the purpose of the present invention is to fit the slope protection lath and the hook part of the anchor pin at the same time so that it can be easily installed. To provide a fixture for a slope protection lath capable of fixing the lath at approximately the same height as the hook part of an anchor pin.

The slope protection lath fixing device of the present invention consists of a threaded coil part that holds the hook part of the anchor pin head driven into the ground and a line of the lath together, and The leg part extends through the connecting corner between the foot part of the anchor pin and the hook part, and the leg part passes through the connecting corner between the foot part of the anchor pin and the hook part, and extends around the foot part of the anchor pin in a direction opposite to the direction in which the hook part of the foot part of the anchor pin protrudes. It is characterized by being able to be locked to the part.

Next, the present invention will be explained based on embodiments shown in the accompanying drawings.

FIGS. 1 and 2 are a front view and a right side view showing an embodiment of the fixture 1 according to the present invention. The fixture is composed of a coil portion 1a formed by winding a wire in a spiral manner, and a leg portion 1b extending from the coil portion. The coil portion 1a holds the hook portion 2a of the head of the anchor pin 2 and the slope protection lath 3 within the coil during use, and therefore its inner diameter is at least the outer diameter of the hook portion 2a and the lath 3. The size is the sum of the wire diameter. The leg portion 1b of the fixing device 1 is a portion extending from the end of the coil portion 1a, and in this leg portion, the portion transitioning from the hook portion 2a of the anchor pin 2 to the vertical portion 2b, that is, the anchor pin foot portion 2b and the hook portion 2a. It is adapted to engage with the connecting portion 2c and the foot portion 2b. Preferably, the leg 1
A constriction 1c is formed at an intermediate position in b, and a portion extending from this constriction 1c to the end of the leg portion 1b is formed into a threaded shape along the outer circumference of the foot portion of the anchor pin 2, and this portion It is preferable to engage the portion 2b.

The fixing device of the present invention may be previously formed into the shape shown in FIG. , or may be formed into the shape shown in FIG. 1 using pliers or the like. In either case,
When constructing the fixture, the leg structure needs to be strong enough to prevent it from falling off the anchor pin 2 with the lath attached, but at the same time, the leg 1b must be attached to the anchor pin 2 with a relatively small force during installation. It also needs to have enough elasticity to be able to be guided from the connecting part 2c to the leg part 2b and fitted around its outer periphery.

Further, as shown by the imaginary line in FIG. 3, if necessary, the head portion 1d of the fixture 1 may be extended above the coil portion 1a, that is, in the direction opposite to the direction of the ground, and mortar or concrete can be sprayed. It can also be used as a measuring pin for blowing thickness.

The fixture 1 formed in this manner is attached approximately as follows.

After driving the anchor pin 2 into the ground 4 so that the hook part 2a of the anchor pin 2 is at a predetermined height position from the ground 4 on the slope (Fig. 3), the lath 3 is spread out on the slope. Among them, align the line of the lath 3 near the anchor pin 2 with the hook portion 2a of the anchor pin 2, and insert the fixing tool 1 so as to embrace both.
The coil portion 1a of the fixing device 1 is inserted into the fixing device 1, and the fixing device 1 is threaded and advanced until the leg portion 1a hits the anchor pin 2. At this time, one wire of the lath 3 may be passed through all the turns of the coil portion 1a, or may be passed through only a part of the windings. Next, by pushing the leg portions 1b apart, the leg portions 2b and hook portions 2 of the anchor pin are separated.
Pass through the connecting corner with the anchor pin foot 2b
Turn it in the opposite direction to the protruding direction of the hook portion to lock it to the foot portion 2b of the anchor pin 2. At this time, leg 1
Since the portion from the constriction 1c of b to the end can be fitted along the outer periphery of the leg portion 2b of the anchor pin 2, the fixture 1 can be locked to the anchor pin 2 in a non-rotatable state. The lath 3 is held fixed in a state in which it is pressed against the side surface of the hook portion 2a of the anchor pin 2. In this way,
By fixing the lath 3 at approximately the same height position as the hook portion 2a of the anchor pin 2 and in a state separated from the ground 4, the core material of the slope reinforcing material 5 such as mortar or concrete is constituted.

As described above, according to the present invention, the lath 3 can be stretched substantially along the topography of the slope, regardless of the shape, topography, etc. of the slope. Therefore,
Since the slope reinforcing material layer can be cast with a uniform thickness, not only is there no waste in the materials used, but the lath can also function satisfactorily as a core material.

Further, since the fixture of the present invention is configured to hold the lath in a manner that it is held inside the coil, the lath will not come off from the fixture. It is also easy to operate. Further, since the fixture itself is configured to be locked to the anchor pin at the leg portion, the lath can be firmly held without falling off from the anchor pin.

[Brief explanation of the drawing]

FIG. 1 is a front view of a slope protection lath fixing device according to the present invention, FIG. 2 is a right side view thereof, and FIG. 3 is a front view showing its usage state. 1...Fixing tool, 1a...Coil part, 1b...
Leg, 1c... Constriction, 2... Anchor pin, 2
a...Hook part, 2b...Leg part, 2c...Connecting corner part, 3...Rath, 4...Mound.

Claims (1)

[Scope of utility model registration request] A threaded coil portion for holding together the hook portion of the head of the anchor pin to be driven into the ground and a line of the lath together, and a leg portion extending from the coil portion, the leg portion being The method is characterized in that the foot of the anchor pin passes through the connecting corner of the foot of the anchor pin and the hook, and can be locked to the foot of the anchor pin by turning in a direction opposite to the protruding direction of the hook of the foot of the anchor pin. Fixing device for surface protection lath.