JPH0228646B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for leveling a rubble mound and a striking head for rough leveling used in carrying out the method.

(Prior Art) Conventionally, in order to level a rubble mound made up of a large number of rubble piled up on the surface of the earth or on the seabed, a flat-bottomed striking head is used and the striking head is moved up and down many times to impact the top of the rubble mound. He did it by giving.

However, in the method of leveling with a flat-bottomed striking head,
The rubble mound only receives impact force in the vertical direction, and such impact force is insufficient to move the rubble at the top of the rubble mound laterally when the top of the rubble mound has large undulations, so the mound It was not possible to reduce the unevenness of the top, and the leveling efficiency was poor.

(Object of the invention) The present invention is intended to solve the above problem, and is effective by first performing rough leveling to reduce the undulations of the top of the rubble mound, and then performing finish leveling to flatten the top of the rubble mound. An object of the present invention is to provide a method for leveling a rubble mound with improved efficiency and a striking head for rough leveling used in carrying out the method.

(Structure of the Invention) In order to achieve the above object, the method for leveling a rubble mound of the present invention includes a method for leveling a rubble mound in which a pointed-bottom type striking head for rough leveling is advanced into the rubble at the top of the rubble mound, and the rubble is moved horizontally and vertically into the rubble. Then, the diagonal plate forming the bottom of the point-shaped hitting head is forcibly opened outward to apply a further lateral movement force to the rubble to level the top of the rubble mound. The present invention is characterized in that the top of the rubble mound is then flattened by applying a vertical impact force to the top of the rubble mound using a flat-bottomed hitting head for finishing and leveling.

Further, the impact head for rough leveling of the present invention used to carry out the above method is a impact head for rough leveling that is attached to an impact generator for leveling rubble mounds, and includes a substrate that is attached to the impact generator, and a substrate that is attached to the impact generator. a bottom portion having an inclined surface extending downwardly and inwardly from the base plate, the bottom portion being formed of a plurality of hypotenuse plates rotatably attached to the substrate, and each of the hypotenuse plates being forced by a driving means. It is characterized by being opened outward.

The angle of inclination of the slope at the bottom of the impact head for rough leveling shall be an angle sufficient to allow the bottom of the head to easily penetrate into the rubble layer at the top of the rubble mound, and to provide lateral movement force to the rubble. .

(Example of the invention) Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an example of a pointed impact head for rough leveling used in carrying out the method of the present invention.
This striking head 1 has a pair of steel hypotenuse plates 2, 2 forming a wedge-shaped bottom, attached to the lower side of a base plate 3 to be attached to an impact generating device for leveling rubble mounds, which will be described later. ing.

The pair of hypotenuse plates 2, 2 are each pivoted by a shaft 5 to a bracket 4 protruding from both ends of the lower surface of the board 3, and between the board 3 and each hypotenuse plate 2 there are two plates on the left and right, respectively. The second cylinder is moved outward by the operation of the main suspended hydraulic or pneumatic cylinder 6.
As shown by the two-dot chain line in the figure, it can be opened in both directions. Each cylinder 6 has one end pivotally connected by a shaft 8 to each of two brackets 7 protruding from the center of the lower surface of the board 3, and the other end pivotally connected to the inside of the pair of hypotenuse plates 2 by a shaft 9. . In addition, the angle between the hypotenuse plates 2, 2 when the pair of hypotenuse plates 2, 2 are closed is approximately 60° in the illustrated example, but this angle is not limited to this. Depending on the size, the angle may be acute or obtuse enough to allow easy entry into the rubble of the rubble mound and to impart lateral movement force to the rubble. Also,
A wire may be attached to each of the pair of hypotenuse plates 2, 2 instead of the cylinder 6, and the pair of hypotenuse plates 2, 2 may be opened and closed by the action of the wire.

In the figure, reference numeral 10 denotes ribs fixed vertically and horizontally to the outer surface of each oblique side plate 2 to reinforce it, and reference numeral 11 denotes bolt holes provided in the substrate 3 for attaching an impact generator to be described later.

The impact head 1 having such a structure is attached to the bottom plate 13 of the impact generating device 12 by bolting the base plate 3, as shown in FIG.

Further, the leveling hitting head of the present invention may be a hitting head 30 having a pyramidal shape (although it may be truncated) as shown in FIG. In this case, each slope is made rotatable so that it can be opened and closed.

FIG. 6 shows a flat-bottom striking head 50 for performing the finish leveling process of the present invention.

This striking head 50 has a plurality of guide rods 51 installed on its upper edge, and these are
A bush 53 provided at the end of a support plate 52 attached to the bottom plate 13 of the impact generator 12 by bolting.
into the bushing 53 via the spring 54.
A shock generating device is created by fitting a spring 55 around the outer periphery of the guide rod 51 protruding from the shock absorber, pressing the spring 55 with a stopper 56, and tightening the nut 57 by screwing the nut 57 onto the threaded portion formed on the upper part of the guide rod 51. It is designed to be attached to 12. Furthermore, when the striking head 50 is attached to the impact generating device 12, the striking hammer 58 fixed to the center of the bottom surface of the support plate 52 is inserted into a hollow frame 59 provided on the upper surface of the striking head 50, and is covered with a lid 60. . In FIG. 6, reference numeral 61 is a buffer made of wood or the like placed within the hollow frame 59.

Next, the method of the present invention which is carried out using the rough leveling hitting head 1 and the finishing leveling hitting head 50 will be described.

First, as shown in FIG. 5, the impact head 1 for rough leveling is attached to the lower side of the impact generator 12, which is suspended via a shock breaker 63 from a wire 62 extending from a crane (not shown). With the hypotenuse plates 2, 2 closed, the wire 62 is lowered and the impact generator 12 is activated to cause the striking head 1 to enter the undulations at the top of the rubble mound M from above. Due to this approach, the rubble around the striking head 1 receives a lateral force from the pair of oblique plates 2, 2 and moves slightly laterally, and at the same time, the rubble mound M
is preliminarily compacted by vertical force.
Furthermore, when the hydraulic or pneumatic cylinder 6 is actuated to open the pair of hypotenuse plates 2, 2 of the striking head 1 outward as shown by the two-dot chain line in the figure, the rubble is further doubled in the horizontal direction. Moves horizontally in response to force.

When the striking head 1 is repeatedly advanced in this manner, the rubble on the undulating portions of the rubble mound M is sequentially moved laterally, the undulations at the top of the rubble mound M become smaller, and the rubble mound M is roughly leveled.

Next, as shown in FIG. 8, the impact head 50 for finish leveling attached to the lower side of the impact generating device 12 is placed on the roughly leveled rubble mound M, and when the impact generating device 12 is operated, an impact is generated. The device 12 vibrates vertically, and when it descends, the impact hammer 53 attached to the support plate 52 collides with the buffer body 61, and the impact force is transmitted to the impact head 50.
The impact force is transmitted to the top of the roughly leveled rubble mound M.

By repeating the above operation, rubble mound M
The top is leveled out.

In the above-described operation, a case has been described in which a rubble mound is leveled on the ground surface, but by providing a cover around the impact generator 12, a rubble mound on the seabed can also be leveled.

(Effects of the Invention) As explained above, according to the method of the present invention, a lateral force is applied to the rubble at the top of the rubble mound with large undulations to move the rubble, reduce the undulation at the top of the rubble mound, and then vertically Since the top of the rubble mound is finished and leveled into the desired flat shape by applying force in the direction, the leveling is dramatically improved compared to the conventional leveling method that only finishes and leveled by applying impact force in the vertical direction. We were able to improve efficiency. In addition, by first entering the rough leveling point-type impact head into the rubble mound, it is possible to apply vertical movement force to the rubble and perform preliminary compaction, making the finishing leveling more efficient. improves.

In addition, the impact head for rough leveling used in carrying out the method of the present invention has an optimal shape and structure for forcibly applying lateral movement force to the rubble at the top of the rubble mound, so its use makes it easy to use. This has the effect of reducing the undulations at the top of the rubble mound.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the rough leveling striking head according to the present invention, FIG. 2 is a front view showing the one in FIG. 1, and FIG. 3 is a side view showing the one in FIG. 1. 4 is a perspective view showing a rough leveling striking head according to the present invention, which is different from that shown in FIG. FIG. 6 is a front view showing a state in which finishing leveling is performed by the method of the present invention using a striking head for finishing leveling. 1, 20, 30, 40...Rough leveling hitting head,
2... Oblique plate (slope), 3... Base plate (upper part), 6... Cylinder, 12... Impact generating device, 50... Hitting head for finishing leveling, 58... Hitting hammer.

Claims (1)

[Claims] 1. A point-type impact head for rough leveling is advanced into the rubble at the top of the rubble mound to apply a moving force to the rubble in the lateral and vertical directions, and then the bottom of the point-type impact head is The slope plate to be formed is forcibly opened outward to give the rubble a further lateral movement force to level the top of the rubble mound, and then the top of the rubble mound is vertically leveled with a flat-bottom striking head for finishing and leveling. A method for leveling a rubble mound characterized by flattening the top of the rubble mound by applying a striking force in a certain direction. 2. A striking head for rough leveling that is attached to an impact generator for leveling rubble mounds, comprising a base plate that is attached to the impact generator and a bottom portion having a slope extending downwardly and inwardly from the base plate, The bottom portion is formed of a plurality of hypotenuse plates rotatably attached to the base plate, and each of the hypotenuse plates is forcibly opened outward by a driving means. Head for rough leveling. 3. The impact head for rough leveling according to claim 2, wherein the bottom portion is wedge-shaped. 4. The impact head for rough leveling according to claim 2, wherein the bottom portion is in the shape of a pyramid.