JPH10159476A - Slurry flying curing device for excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent flying of excavation slurry to an adjacent area when an excavation work is executed at an area adjacent to a side walk and houses and to remarkably improve an excavation work. SOLUTION: A curing cage 20 having a curing sheet 24 laminated to the side of a box-shaped frame body is arranged in a manner to surround the outer periphery of an excavation part 10. When the excavation part 10 is moved in an excavation hole to effect an excavation work, the curing cage 20 waits on a ground near the excavation hole. Further, when the excavation part 10 is raised to a ground, an excavation engaging part 32 of the excavation part 10 is engaged from below with the cage engaging part of the curing cage 20 and the curing cage 20 is also simultaneously raised and the upper part of the excavation part 10 is covered with the curing cage 20. This constitution prevents flying of excavation slurry even when an excavation work is executed at an area to which a side walk and houses are situated adjacently since the upper part of the excavation part 10 is covered with the curing cage 20 when the excavation part 10 is revolved to convey out soil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muddy splash curing device for an excavator which prevents muddy water from splashing around when the excavating section of the excavator carries out earth and sand.

[0002]

2. Description of the Related Art FIG. 6 shows a state in which a trench is excavated using a continuous wall excavator 4 in order to construct a continuous wall on the ground near a sidewalk 2.

[0003] The wall excavator 4 is a self-propelled machine, and a wire rope 8 extended to the tip of a boom 6 is attached to an excavation unit 1.
0 is hung up and down freely. The excavation unit 10 is a vertically long structure for excavating a deep excavation groove 16, and has an openable / closable bucket 14 at a lower end.
Reference numeral 15 in the drawing denotes a bellows surrounding the wire rope 8 and a hydraulic hose extending downward.

The excavating section 10 is lowered while sliding on the guide wall 12 buried in the opening of the excavation groove 16, and the earth and sand at the bottom of the excavation is grabbed by the bucket 14, and then the ground is raised to the ground. The excavation part 10 is turned to the earth and sand discharge position 17, and the operation of discharging the earth and sand in the bucket 14 is repeatedly performed, so that the excavation groove 16 having a predetermined depth is excavated.

[0005]

As shown in FIG. 6, a curing sheet 18 having a predetermined height is provided at the boundary between the sidewalk 2 and the excavation position. In this configuration, a curing sheet 18 is provided to prevent muddy water attached to the excavation unit 10 from scattering toward the sidewalk 2 when the excavation unit 10 turns.

[0006] The curing sheet 18 is stretched over a temporary enclosure installed at the boundary position. However, in the excavation site shown in FIG.
In order to prevent muddy water from splashing to the sidewalk 2 side, the curing sheet 18 is placed on a tall curing scaffold instead of the temporary enclosure.
Must be stuck.

However, it is difficult to form a curing scaffold in a limited space between the sidewalk 2 and the excavation position.
In addition, if a high curing scaffold is assembled, the curing sheet 1
8 is easily swayed, and there is a problem in the safety of passers-by on sidewalk 2.

For this reason, at present, the excavating section 10 is stopped for a predetermined time before turning, and the muddy water adhering to the excavating section 10 is sufficiently dropped before the excavating section 10 is turned. There is a problem in terms of conversion.

The present invention has been made in view of the above circumstances, and when digging work is performed in an area where a sidewalk, a house, or the like is adjacent, scattering of drilling muddy water to an adjacent area is prevented, and An object of the present invention is to provide a muddy water splash curing device of an excavator capable of greatly improving efficiency.

[0010]

In order to solve the above-mentioned problem, a muddy water splash curing device of an excavator according to the present invention excavates an excavation hole by an excavation unit having a grab-type bucket at a lower end, and the bucket is grasped. In an excavator configured to discharge the taken earth and sand after the excavation unit ascended to the ground turns to a sediment discharge position, a curing cage having a curing sheet attached to a side surface of a box-shaped frame body is attached to the excavation unit. When the excavation part enters the excavation hole and performs excavation work, the curing basket waits on the ground near the excavation hole, and the excavation part rises to the ground. The excavating part engaging part provided on the excavating part engages with the cage engaging part provided on the curing cage from below, and the curing cage rises at the same time, and the curing cage covers the upper part of the excavating part. It is the device which did in this way.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The same components as those shown in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 shows an appearance of a muddy water scattering curing basket (hereinafter simply referred to as a curing basket) 20 attached to the excavation unit 10. The curing basket 20 includes a rectangular frame 22 formed of a plurality of angle members, and a frame 2.
2, a mesh sheet (curing sheet) 24 attached so as to cover the three side openings, and an upper opening 22 of the frame 22.
and a pair of cross members 26 and 28 which are detachably connected to the frame 22 so as to cross the line a.

The upper opening 22a of the frame 22 is formed as a rectangular opening which is larger than the shape of the excavated portion 10 in a plan view. In addition, the height H of the frame 22 is set to be equal to or more than half of the entire length (length in the vertical direction) of the excavated portion 10.

Further, the pair of cross members 26 and 28 are formed of angle members having the same length, and by cutting one side of the central portion in the longitudinal direction, the engagement notch 26 is formed.
a, 28a. The pair of cross members 26 and 28 face each other so that the engagement notches 26a and 28a do not face each other, and are connected in parallel to the angle member forming the upper opening 22a. Have been. Then, the engagement notches 26a, 28a
Are set to the length S.

FIG. 2 shows the upper structure of the digging portion 10, and a pair of beam engaging members 30 and 32 are fixed to the upper surface of the digging portion 10. The pair of crosspiece engaging members 30 and 32 are curved plate members, and the lower ends of the pair of crosspiece engaging members 30 and 32 of the excavating portion 10 are arranged so as to be substantially the same distance as the dimension S between the engaging notch portions 26a and 28a. The pair of beam engaging members 30 and 32 are fixed to the upper surface.
Are curved outward and extend so as to be spaced apart from each other by more than the dimension S.

In order to attach the curing basket 20 to the excavating section 10, a pair of cross members 26, 28 are formed in the upper opening 22a.
Are connected, and the curing cage 20 with the upper opening 22a opened in a rectangular shape is set on the guide wall 12 of the excavated trench 16 as shown in FIG. And
The excavating part 10 lowered from above toward the curing basket 22
The liquid is passed from the upper opening 22a to the lower opening 22b.
When the upper portion of the excavation portion 10 passes through the upper opening 22a, the pair of cross members 26, 28 are inserted into the upper opening 22a.
Concatenate.

Next, the operation and effect of the curing cage 20 attached to the excavation part 10 will be described with reference to FIGS. As shown in FIG. 3, when the excavating unit 10 is lowered into the excavation groove 16, the curing basket 20 waits on the guide wall 12. Then, after the sediment at the bottom of the excavation is grasped by the opening and closing operation of the bucket 14 and the excavation part 10 is raised, as shown in FIG. , 32 are engaged with engagement notches 26a, 28a provided on the pair of crosspiece members 26, 28 of the curing basket 20 from below. These pair of beam engaging members 30,
The curing cage 20 moves up together with the excavation unit 10 by the engagement of the engagement notch 32 and the engagement notches 26a, 28a.
As a result, as shown in FIG. 5, the curing cage 20 is suspended from the excavating section 10 that has risen to the ground.
Cover the top of

Next, the excavating unit 10 is turned to the earth and sand discharge position 17. At this time, the curing cage 20 covering the upper part of the excavating unit 10 is moved by the mesh sheet 24 stuck to the three side openings. It prevents muddy water adhering to the excavation part 10 from scattering around. The excavating unit 10 that has turned to the earth and sand discharge position 17 opens the bucket 12 and discharges the earth and sand.

Then, the excavator 16 is intermittently moved in the direction in which the excavation groove 16 is formed, and the operations shown in FIGS. 3 to 5 are repeatedly performed, whereby the excavation groove 16 for the continuous wall is formed. .

As described above, in the present embodiment, when the excavating unit 10 turns to carry out the earth and sand, the curing cage 20 covers the upper portion of the excavating unit 10 to prevent the muddy water from scattering around. Therefore, the curing sheet 18 disposed at the boundary between the sidewalk 2 and the excavation position does not need to be disposed up to a high position. Therefore, it is not necessary to form a curing scaffold in a wide space at the boundary between the sidewalk 2 and the excavation position, and the curing sheet 18 is provided in the temporary enclosure.
Is sufficient, and the working environment can be improved.

When the excavating part 10 descends into the excavation groove 16, the curing cage 20 stands by on the guide wall 12 provided at the above-ground opening of the excavation groove 16, and the excavating part 10 rises. Then, the bar engaging members 30 and 32 of the excavating section 10 engage with the engagement notches 26a and 28a to cover the upper portion of the excavating section 10 and move upward.
Can be immediately turned to the earth and sand discharge position 17. Thereby, it is not necessary to stop the excavation part 10 for a predetermined time in order to sufficiently remove the muddy water adhered as in the related art,
Drilling work efficiency can be greatly improved.

A pair of crosspieces 26 and 28 connected across the upper opening 22 of the curing basket 20 correspond to the cage engaging portion of the present invention, and the crosspieces fixed to the upper portion of the excavating portion 10 are provided. The members 30 and 32 correspond to the excavating portion engaging portion of the present invention.
Here, the cage engaging portion and the excavating portion engaging portion are not limited to the structure of the present embodiment, and other structures may be used as long as the curing cage 20 simultaneously rises when the excavating portion 10 rises. Even if there is, the same operation and effect can be obtained.

[0023]

As described above, according to the mud splashing curing device of the excavator of the present invention, when the excavating portion turns to carry out the earth and sand, the upper portion of the excavating portion is covered with the curing basket. Therefore, even when excavation work is performed in an area where a sidewalk, a house, or the like is adjacent, it is possible to prevent the drilling muddy water from scattering to the adjacent area. Therefore, it is not necessary to form a curing scaffold in a wide space at the boundary with the adjacent area, and the working environment can be improved.

When the excavated part enters the excavation hole, the curing cage waits on the ground near the excavation hole, and when the excavated part rises to the ground, the excavation part engaging part of the excavating part is engaged with the cage engaging part of the curing cage. Since the joint portion engages from below and rises with the excavation portion to cover the upper portion of the excavation portion, the raised excavation portion can be immediately turned to the earth and sand discharge position. As a result, it is not necessary to stop the excavation section for a predetermined time in order to sufficiently remove the attached muddy water as in the related art, and the efficiency of excavation work can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a curing basket according to the present invention.

FIG. 2 is a perspective view showing an upper structure of a digging portion according to the present invention and a digging portion engaging portion provided on the upper portion.

FIG. 3 is a diagram showing a state in which a digging part has entered a digging hole and a curing cage is waiting on the ground.

FIG. 4 is a perspective view showing a state in which a digging section engaging section provided on the excavating section is engaged with a basket engaging section provided on the adoption basket.

FIG. 5 is a view showing a state in which the excavated portion rises to the ground, and the curing basket also ascends and covers the upper portion of the excavated portion.

FIG. 6 is a diagram showing a state in which a conventional excavator is used to excavate an excavation trench in order to construct a continuous wall on the ground near a sidewalk.

[Explanation of symbols]

 Reference Signs List 2 sidewalk 4 continuous wall excavator (excavator) 6 boom 10 excavator 14 bucket 16 excavation groove (excavation hole) 17 earth and sand carry-out position 20 curing basket (mud splashing curing cage) 22 box-shaped frame 22a upper opening 22b lower opening Part 24 Mesh sheet (curing sheet) 26, 28 Cross member 26a, 28b Engagement notch 30, 32 Cross member

Claims (1)

[Claims] An excavation hole is excavated by an excavation part provided with a grab bucket at a lower end, and sediment caught by the bucket is discharged after the excavation part raised to the ground turns to a sediment discharge position. In the excavator, the curing cage with the curing sheet stuck on the side of the box-shaped frame is
It is attached so as to surround the outer periphery of the digging portion, and when the digging portion enters the digging hole and performs digging work, the curing basket waits on the ground near the digging hole, and the digging portion rises to the ground. When doing, the excavating part engaging part provided in the excavating part engages with the cage engaging part provided in the curing cage from below, and the curing cage also rises at the same time, and the curing cage is A mud splashing curing device for an excavator, wherein an upper portion is covered.