JP3310845B2 - Work machine with earth removal plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working machine with an earth removal plate, such as a mini shovel, provided with an earth removal plate capable of performing an earth removal operation on a traveling body.

[0002]

2. Description of the Related Art There is a hydraulic shovel such as a mini shovel as a working machine with an earth discharging plate. The mini excavator is, for example, a traveling body composed of a pair of crawler tracks, a revolving body arranged on the traveling body and forming a main body having a driver's seat, and a front mounted on the revolving body so as to be rotatable in a vertical direction. And a swing cylinder for swinging the front mechanism in a horizontal plane. The front mechanism is
It includes a boom, an arm, a bucket, a boom cylinder for driving the boom, an arm cylinder for driving the arm, a bucket cylinder for driving the bucket, and the like. Also,
The traveling body is equipped with an earth removal plate capable of earth removal work. The width dimension of the earth removal plate is set to a sufficiently large dimension substantially equal to the dimension between the outer ends of the pair of crawler belts.
In the vicinity of the earth discharging plate, a compacting roller which is set to substantially the same width as the earth discharging plate and is capable of leveling is provided. The pressure roller is supported so as to be located below the lower end surface of the plate, and when the pressure roller is not used, the pressure roller is held so that the roller is stored on the back surface of the earth discharging plate. Some are provided with supporting means for supporting. As a known technique having the above-described configuration, for example, there is a technique described in Japanese Utility Model Laid-Open No. 6-35349.

[0003]

Recently, in a road or the like in a town, a groove having a fixed width, a fixed depth from a road surface, and a sufficiently long groove for burying pipes is used by a mini excavator or the like. Digging and forming are performed. Such trench excavation is performed by the boom, arm,
And the bucket is appropriately rotated to drive and move the traveling body. Therefore, complicated operations of the front mechanism including difficult positioning of the bucket are required, and it is difficult for even a skilled operator to form a groove at a constant width and a constant depth. For this reason, there is a problem that it is difficult to expect improvement in the work accuracy and work efficiency of such a trench excavation work.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances in the prior art, and has as its object to provide a work with an earth removal plate capable of relatively easily excavating a groove having a fixed width and a fixed depth. To provide a machine.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a working machine with an earth removal plate provided on a traveling body having a pair of crawler belts with an earth removal plate capable of rotating vertically. , The width of the earth removal plate is set smaller than the width between the inner ends of the pair of crawler belts.

[0006] In the present invention, trench excavation can be carried out with a dump plate. That is, since the width of the earth removal plate is set to be smaller than the width between the inner ends of the pair of crawler tracks, the excavation is performed by rotating the earth removal plate while running the traveling body. Even if the pair of crawler belts of the traveling body do not fall into the groove formed by the earth discharging plate, the traveling body can freely move on the groove. In this case, the width of the earth removal plate is constant, and since it is easy to keep the rotation angle of the earth removal plate constant, the traveling body repeatedly reciprocates on the groove,
It is easy for even a non-skilled operator to easily dig deep into the groove to a predetermined depth.

[0007] A leveling operation, for example, in which a predetermined pipe is housed in a groove having a constant width and a constant depth formed by excavation and soil is deposited thereon to perform leveling, is similar to the above-described trench excavation. It can be easily performed by the rotation operation of the plate and the traveling operation of the traveling body.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a working machine with an earth discharging plate according to the present invention. FIG. 1 is a side view showing an embodiment of a working machine with an earth discharging plate of the present invention, and FIG.
Is a plan view of the embodiment shown in FIG. 1, and FIG. 3 is a front view of the embodiment shown in FIG.

[0009] These figures show a mini excavator,
The present embodiment is directed to a traveling body 2 having a pair of crawler tracks 2a and 2b.
And a revolving unit 3 arranged on the traveling unit 2 and forming a main body having a driver's seat. Further, a boom 4 mounted on the revolving unit 3 so as to be rotatable in the vertical direction, and an arm 5 connected to the tip of the boom 4 so as to be rotatable in the vertical direction.
A bucket 6 connected to the tip of the arm 5 so as to be vertically rotatable; a boom cylinder 7 for driving the boom 4; an arm cylinder 8 for driving the arm 5; and a bucket cylinder 9 for driving the bucket 6. And a front mechanism including: The front mechanism is held so as to be able to swing in a horizontal plane by driving a swing cylinder 10 shown in FIG.

The traveling body 2 is provided with an earth discharging plate 11 capable of performing an earth discharging operation. The earth removal plate 11 is rotatable in the vertical direction by driving the earth removal plate cylinder 12 shown in FIG. 1, and is held at a predetermined rotation angle by controlling the earth removal plate cylinder 12. can do. As shown in FIGS. 2 and 3, the width S of the earth discharging plate 11 is set to be smaller than the width W between the inner ends of the pair of crawler belts 2 a and 2 b of the traveling body 2.

[0011] Also, near the discharge plate 11, this discharge plate 1
For example, a resin pressure roller 13 which is set to be substantially the same as the width dimension S of 1 and is capable of leveling is provided. The roller 13 has both side ends held at one end of the link 14. The other end of each of the links 14 is rotatably connected to each of the shafts 15 fixed to the discharge plate 11. When the roller 13 is used, the link 14
Are fixed to the earth discharging plate 11 by fixing bolts 16 and when the pressure roller 13 is not used, the fixing bolt 16 is removed and the pressure roller 13 is removed as shown by an arrow 17a in FIG.
Is stored on the back of the earth removal plate 11. FIG. 2 shows a state in which the pressure roller 13 is stored.

The link 14, the shaft 15 and the fixing bolt 16 are arranged so that, when the pressure roller 13 is used, the pressure roller 13 is positioned below the lower end surface of the earth discharging plate 11. 13 and the pressure roller 13
When the device is not used, a supporting means for supporting the pressure roller 13 is configured so that the pressure roller 13 is stored on the back surface of the earth discharging plate 11.

In this embodiment, for example, when excavating a trench for pipe burial work on a road surface 1 in a town, the compaction roller 13
Is stored in the back of the earth discharging plate 11 as shown by the dashed line in FIG. Further, the front mechanism including the bucket 6 is located at an upper position so as not to hinder the trench excavation work. That is, in this embodiment, the trench excavation is performed by the earth discharging plate 11.

By properly operating the cylinder 12 for the earth discharging plate, the earth discharging plate 11 is held at a predetermined downward angle, the traveling body 2 is linearly advanced, and the road surface 1 is moved by the lower end of the earth discharging plate 11. Excavate. After the first excavation of the specified length,
By operating the earth removal plate cylinder 12, the earth removal plate 11 is raised, and the traveling body 2 is receded linearly to the initial position.

Next, by operating the earth-discharge plate cylinder 12, the earth-discharge plate 11 is rotated downward by an angle larger than that at the time of the first excavation to be stationary, and the traveling body 2 is moved to the end point of the first excavation.
Is advanced, and the second excavation is performed with the earth discharging plate 11. When this excavation is completed, the earth discharging plate 11 is raised by operating the earth discharging plate cylinder 12, and the traveling body 2 is receded linearly to the initial position. Hereinafter, the same operation is repeated until a groove having a predetermined depth is formed.

In this embodiment, the width S of the discharge plate 11
Is set smaller than the width W between the inner ends of the pair of crawler belts 2a and 2b of the traveling body 2, so that the earth removal plate 11 is rotated while the traveling body 2 is linearly moved forward or backward. Even when the trench is excavated, the pair of crawler tracks 2
The a and 2b do not fall into the groove formed by the earth discharging plate 11, and the traveling body 2 can freely move on the groove. In this case, the width dimension S of the earth removal plate 11 is constant, and the downward rotation angle of the earth removal plate 11, that is, the angle at the time of excavating the groove, is kept constant at a constant level by the cylinder 12 for the earth removal plate. Can be easily realized by the above control, and the traveling body 2 repeatedly reciprocates on the groove, and gradually digging the groove to a predetermined depth can be easily performed even by a skilled operator. .

In a leveling operation in which a predetermined pipe is housed in a groove having a constant width and a constant depth excavated as described above, and soil is deposited on the predetermined pipe to perform leveling, together with the soil discharging plate 11, the compaction is performed. The roller 13 is used.

First, a predetermined pipe is housed in the groove formed as described above. Next, in a state where the compaction roller 13 is stored on the back surface of the earth removal plate 11 as before, the traveling body 2 is caused to travel, and a predetermined amount of water is placed on the pipe housed in the groove by the earth removal plate 11. Sediment is deposited, for example, over the entire length of the trench. This operation can be easily performed by combining, for example, an operation of moving the traveling body 2 in a direction orthogonal to the longitudinal direction of the groove and an operation of moving the traveling body 2 in the longitudinal direction of the groove. When a predetermined amount of sediment is deposited on the pipe in the groove in this way, the traveling body 2 is moved to, for example, the vicinity of the first excavation start point, and the portion of the earth discharging plate 11 is moved in the groove or on the groove. To rest.

Here, as shown by the one-dot chain line in FIG.
3, the link 14 is rotated as exemplified by the arrow 17b, the roller 13 is positioned below the lower end surface of the earth discharging plate 11, and the link 14 is fixed to the earth discharging plate 11 by fixing bolts 16. . Thereby, the pressure roller 13 is fixed integrally with the earth discharging plate 11.

In this state, the cylinder 12 for the earth discharging plate is appropriately operated to rotate the earth discharging plate 11 downward so that the pressure roller 13 presses the earth and sand deposited on the pipe. 2 is linearly advanced to the excavation end point described above. Next, while maintaining the state in which the compaction roller 13 is pressing earth and sand, the compaction plate cylinder 12 may be operated to rotate the soil removal plate 11 further downward in some cases, and the compaction roller 13 The pressing force of the earth and sand is increased, and the excavation end point is linearly retracted from the excavation start point. Hereinafter, this operation is repeated as many times as necessary. In this way, for example, although the earth and sand cannot be buried in the entire groove, for example, the earth and sand are deposited to a predetermined height on the pipe housed in the groove, and the first solidification operation for solidifying is performed.

Next, the fixing bolt 16 is removed and the link 14 is removed.
By rotating the roller, the rolling roller 13 is
Store it back on the back.

In this state, the traveling body 2 is made to travel in the same manner as in the above-mentioned trench excavation, and a predetermined amount of earth and sand is further placed on the earth and sand fixed on the pipe by the earth discharging plate 11, for example, over the entire length of the trench. Deposit. When a predetermined amount of sediment is further accumulated on the sediment solidified on the pipe in this way, the traveling body 2 is moved to, for example, the vicinity of the first excavation start point, and the portion of the earth discharging plate 11 is moved. Keep still in or on the groove. Here, as described above, the pressure roller 13 is positioned below the lower end surface of the earth discharging plate 11 and the fixing bolt 16
The link 14 is fixed to the discharge plate 11 by the
3 is integrally fixed to the earth discharging plate 11.

In this state, the cylinder 12 for the earth discharging plate is appropriately operated so that the pressure roller 13 presses the earth and sand which has further accumulated on the earth and sand fixed on the pipe.
1 is rotated downward, and at the same time, the traveling body 2 is linearly advanced to the excavation end point described above. Next, in the same manner as described above, the pressing force of the soil by the pressure roller 13 is increased if necessary, and the excavation end point is linearly retracted from the excavation start point. Hereinafter, this operation is repeated as many times as necessary. In this way, the second consolidation work is performed. Such ground consolidation work is performed, for example, several times until the ground consolidated by the compaction roller 13 substantially matches the road surface 1, and the predetermined ground leveling work ends when they substantially match.

The ground leveling operation performed in this manner also requires the work of arranging the compaction roller 13 below the earth removal plate 11 and the operation of storing the compaction roller 13 on the back surface of the earth removal plate 11. , The width of the roller 13 must be determined in advance.
1 is set to be substantially equal to the width S, that is, the width W between the inner ends of the pair of crawler belts 2a and 2b of the traveling body 2.
Since it is set smaller than the above, the earth removal plate 11 is rotated while the traveling body 2 is linearly advanced or retracted,
Even if the pressing operation of the earth and sand in the groove is performed by the pressure roller 13,
The pair of crawler belts 2a and 2b of the traveling body 2 do not fall into the groove, and the traveling body 2 can freely move on the groove. Therefore, this leveling operation can be easily performed through a combination of the turning operation of the earth discharging plate 11 and the linear traveling operation of the traveling body 2 in the same manner as the above-described trench excavation operation.

In this embodiment, a groove having a constant width and a constant depth corresponding to the width dimension S of the discharge plate 11 is formed on the road surface 1 by a discharge plate 11 instead of a skilled operator. Can also be excavated relatively easily, and the work accuracy and work efficiency of the trench excavation work can be improved. Also,
The earth discharging plate 11 and the compacting roller 13 having a width dimension substantially equal to the width dimension S of the earth discharging plate 11 allow earth and sand to be deposited, hardened, and leveled relatively easily in the excavated groove. In addition, it is also possible to improve the work efficiency of the leveling work.

[0026]

As described above, according to the present invention, a groove having a fixed width and a fixed depth can be relatively easily excavated by a dumping plate, and it is necessary to drive a front mechanism including a bucket. As compared with the conventional method, the work accuracy and work efficiency of the trench excavation work can be improved. Further, the earth and sand can be relatively easily deposited, hardened, and leveled in the groove by the earth discharging plate and the compaction roller, and the work efficiency of the leveling operation can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a working machine with an earth discharging plate of the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a front view of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road surface 2 Running body 2a Crawler belt 2b Crawler belt 11 Drainage plate 13 Rolling roller 14 Link 15 Shaft 16 Fixing bolt W Width dimension S Width dimension

Claims (2)

(57) [Claims] 1. A work machine with an earth removal plate provided with a traveling body having a pair of crawler belts, the earth removal plate being rotatable in a vertical direction. A working machine with an earth removal plate, wherein the width is set to be smaller than the width between the inner ends. 2. A compacting roller having a size substantially equal to the width of the soil removing plate and capable of leveling is provided in the vicinity of the soil removing plate. The pressure roller supports the pressure roller so that the pressure roller is located below the lower end surface of the earth discharging plate. When the pressure roller is not used, the pressure roller is stored on the back surface of the earth discharging plate. 2. The working machine with an earth discharging plate according to claim 1, further comprising a supporting means for supporting said pressure roller.