JP3934984B2 - Bullet culvert forming apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bullet culvert forming apparatus and method, and more particularly, it is possible to easily form a bullet culvert for drainage in a wetland, particularly a bullet culvert for improving drainage in the vicinity of an inclined land including a slope. The present invention relates to a bullet culvert forming apparatus and method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a so-called bullet culvert forming apparatus is known as an apparatus for forming drainage culverts in a field. This bullet culvert forming device is, for example, a bulldozer or the like in a state where a chisel (soil incision portion) provided with a bullet at the lower end is made to enter the ground, as described in Japanese Patent Application Laid-Open No. 56-156310. By pulling with, it will form a bullet culvert in the ground.
[0003]
[Problems to be solved by the invention]
However, in the conventional apparatus, since the work is started with the bullet placed on the ground surface, a distance of several meters is required for the bullet to reach a desired depth. Therefore, a bullet culvert can be easily formed at the center of the field, but it is difficult to form a bullet culvert at the end of the field.
[0004]
In addition, in the land adjacent to the slope, water may accumulate near the slope due to the water flowing down from the slope, so conventionally, drainage grooves and underdrainage facilities were provided along the bottom of the slope, In the case of a drainage ditch, it is necessary to frequently remove earth and sand falling into the ditch. On the other hand, the conventional underground drainage facility has a problem that the underground drainage pipe has to be buried by excavating the vicinity of the sloped land, and the construction becomes large. Furthermore, the water flowing down from the sloped land toward the flat ground is soiled. Since it led to the underdrainage facility only by the osmotic action, sufficient drainage performance could not be obtained. In addition, if a large number of drainage grooves and underdrain drainage facilities are provided along the bottom of the sloped land, the drainage grooves and underdrainage facilities may be crushed by earth pressure from above the sloped land, and the sloped land may collapse.
[0005]
Therefore, the present invention can easily form bullet culverts at the end of the field, which is difficult to work with the conventional bullet culvert forming apparatus, and can easily form bullet culverts on sloping ground. An object is to provide a bullet culvert forming apparatus and method.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the bullet culvert forming apparatus of the present invention mounts a base end portion of a blade having a bullet for forming a culvert at a distal end portion on the arm end of a backhoe via a horizontal rotating shaft. The blade is rotated with respect to the working position in a state in which the bullet is inserted into the ground, around the rotation axis to both the backhoe side and the counter- backhoe side standby positions where the bullet is located on the ground. It is characterized in that a drive means that can be used is provided, and the drive means uses a hydraulic cylinder for excavator drive provided in a work arm of the backhoe .
[0007]
Further, the bullet culvert forming method of the present invention is a method of forming a bullet culvert for drainage in the ground using the bullet culvert forming apparatus formed as described above, wherein the bullet The blade is rotated so as to be in a state where it can enter into the ground, and then the blade is rotated by the driving means so that the bullet enters the ground and moves to the working position. In this state, after the bullet is advanced by the backhoe to form a bullet culvert in the ground, the blade is rotated so that the bullet is positioned at the other standby position.
[0008]
Further, in the bullet culvert forming method of the present invention, when the bullet culvert for drainage is formed in the ground from the inclined land to the flat ground, the bullet is set at the standby position on the anti-backhoe side by the driving means, and the inclined ground. The blade is rotated so as to be in a state where it can enter into the ground, and then the blade is rotated by the driving means to cause the bullet to enter the ground of the sloping ground. The blade is rotated to the working position that reaches the inside, and the bullet is advanced by the backhoe so that a bullet culvert is formed in a flat ground, and then the bullet is positioned at the standby position on the backhoe side. The blade is rotated.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show an example of a bullet culvert forming apparatus according to the present invention. FIG. 1 is a front view of a bullet culvert forming apparatus in which a backhoe is combined as a traveling work machine, and FIG. 2 is a bullet culvert forming apparatus. FIG. 3 is a right side view of the excavating tool. FIG.
[0010]
In this bullet culvert forming device, an excavator 13 for forming a bullet culvert is rotatably mounted at the tip of a work arm 12 in the backhoe 11. The excavator 13 is provided with a substantially semicircular guide portion 16 at the base of a blade 15 having a bullet 14 for forming a culvert at the tip. The guide portion 16 has an arc center position, that is, a blade. A rotation shaft mounting portion 17 is provided at a position corresponding to the base end portion of 15, and a driving means connecting portion 18 is provided at an arc outer peripheral position of the guide portion 16.
[0011]
The bullet 14 and the blade 15 are formed in a shape corresponding to the bullet culvert to be formed, and both have a shape in which the portion that becomes the traveling direction when the bullet culvert is formed is sharpened. Further, the bullet 14 is rotatably attached to the blade 15 via the connecting member 19, and the bullet 14 can be changed even if the angle of the blade 15 is changed in order to adjust the depth when the bullet culvert is formed. It faces the direction of formation.
[0012]
Further, a half-cylindrical guide member 20 is provided on one side surface of the guide portion 16, and when the bullet culvert is formed, the work arm 12 is operated while checking the relationship between the outer peripheral surface and the ground surface. This makes it possible to form a bullet culvert at a desired depth. In addition, on the inner peripheral side of the guide member 20, members 21 and 22 corresponding to the rotating shaft mounting portion 17 and the connecting portion 18 are provided, and a plurality of reinforcing members 23 are provided.
[0013]
The excavator 13 is rotatably mounted on the tip of the work arm 12 via a rotation shaft 24 inserted into the rotation shaft mounting portion 17, and the driving means connecting portion 18 is driven via a link mechanism 25. It is connected to a hydraulic cylinder 26 as a means. By expanding and contracting the hydraulic cylinder 26 in this state, the bullet 14 and the blade 15 are placed on standby on the working machine side where the bullet 14 is positioned on the ground with respect to the working position where the bullet 14 is inserted into the ground. The position and the standby position on the counter work machine side can be rotated around the rotation shaft 24, respectively. As the hydraulic cylinder 26 and the link mechanism 25, a hydraulic cylinder and a link mechanism for driving an excavator provided on a general backhoe arm can be used as they are.
[0014]
FIG. 4 to FIG. 6 are explanatory diagrams showing each work stage when a bullet culvert is formed on a flat ground. FIG. 4 is a state at the start of work, FIG. 5 is a state during work, and FIG. Each time state is shown. First, as shown by an imaginary line in FIG. 4, the hydraulic cylinder 26 is operated to rotate the excavator 13 to the standby position on the side opposite the work machine far from the backhoe 11 and the work arm 12 is operated. The excavator 13 is positioned at the end 31 of the land 30 forming the bullet culvert. In this state, the hydraulic cylinder 26 is operated in the extending direction, the excavator 13 is rotated about the rotation shaft mounting portion 17, and the bullet 14 is advanced to a predetermined depth in the ground. At this time, the bullet 14 rotates through the connecting member 19 as it enters the ground, and the sharpened tip is directed in the excavation direction. By this operation, an arcuate start bullet culvert 32 is formed at the end of the land 30.
[0015]
Next, as shown in FIG. 5, the excavator 13 is moved to a predetermined depth at a predetermined depth by running the backhoe 11 or operating the work arm 12 in a state where the bullet 14 is inserted into the ground. By moving in the direction, after the excavator 13 has passed, a bullet culvert 33 formed by the bullet 14 and the blade 15 is formed. Then, as shown by the imaginary line in FIG. 6, when the bullet culvert 33 reaches a predetermined position, the excavator 13 is rotated to the standby position on the working machine side as shown by the solid line in FIG. Pull out from the ground. Thereby, the arc-shaped terminal side bullet culvert 34 is formed.
[0016]
By repeating such operations with appropriate intervals, bullet culverts 33 as shown in a sectional view in FIG. 7 can be formed in the ground of the land 30 at predetermined intervals. In particular, as shown in FIG. 4, when the bullet 14 is made to enter the ground, the excavator 13 including the blade 15 is rotated on the spot, so that a bullet culvert can be easily formed on the end 31 of the land 30. And it can form reliably and can improve drainage near the land edge. Note that the groove-like portion 35 through which the blade 15 above the bullet culvert has passed is almost closed by earth pressure. Further, the arc-shaped portions of the start side and end side bullet culverts can be filled with rice husk or earth and sand as necessary.
[0017]
FIG. 8 is an explanatory diagram showing an operation example of forming a bullet culvert for drainage in the ground from an inclined land to a flat ground. First, the work arm 12 and the hydraulic cylinder 26 are operated so that the bullet 14 and the blade 15 are positioned above the slope, and the excavator 13 is located at the bottom of the slope 41. In this state, the hydraulic cylinder 26 is operated to rotate the excavator 13 to cause the bullet 14 to enter the ground on the inclined ground, and further to the working position where the bullet 14 reaches the ground on the flat ground 42. Rotate. As a result, an arc-shaped bullet culvert 43 extending from the inclined ground 41 to the flat ground 42 is formed. Then, similarly to FIG. 5, the excavator 13 is moved to an appropriate position in the flat ground by operating the backhoe 11 and the work arm 12, and a bullet culvert 44 having an appropriate length is formed on the flat ground 42. Similarly to FIG. 6, the excavator 13 is rotated to the standby position on the work machine side, and the bullet 14 and the blade 15 are pulled out from the ground.
[0018]
As shown in FIG. 9, a plurality of bullet culverts 43 and 44 extending from the sloped land 41 to the flat ground 42 are formed perpendicularly toward the sloped land at appropriate intervals as shown in FIG. , 44 and can flow into the ground of the flat ground 42, and water can be prevented from collecting on the flat ground 42. At this time, when the underdrain pipe 45 is buried in the ground of the flat ground 42 in advance, the bullet underdrain 44 on the flat ground side is sufficiently drained if formed to an appropriate position above the underdrain drain pipe 45. Sex can be obtained. Further, the bullet culvert 44 may be formed up to the other end of the flat ground 42. Further, by forming the bullet culverts 43 and 44 in the vertical direction toward the inclined ground 41, earth pressure from above the inclined ground hardly acts on the bullet culverts 43 and 44, so that the inclined ground 41 does not collapse.
[0019]
【The invention's effect】
As described above, according to the present invention, it is possible to easily form a bullet culvert at the end of the field, which was difficult to work with the conventional bullet culvert forming apparatus, and to improve the drainage of the entire field. Can do. Furthermore, since the formation of bullet culverts from slopes to flat grounds can be easily performed, drainage near slopes can be greatly improved. Moreover, since the bullet culvert can be formed in the vertical direction toward the slope, the bullet culvert is not crushed or collapsed by the earth pressure from above the slope.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a bullet culvert forming apparatus of the present invention.
FIG. 2 is a front view of a drilling tool in a bullet culvert forming apparatus.
FIG. 3 is a right side view of the excavator.
FIG. 4 is an explanatory diagram showing a state at the start of work when a bullet culvert is formed on a flat ground.
FIG. 5 is an explanatory view showing a state during work.
FIG. 6 is also an explanatory diagram showing a state at the end of the start of work.
FIG. 7 is a cross-sectional view showing an example of a bullet culvert formed according to the present invention.
FIG. 8 is an explanatory diagram showing a state at the start of work when a bullet culvert for drainage is formed in the ground from an inclined ground to a flat ground.
FIG. 9 is an explanatory view showing a state at the end of work start in the same manner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Backhoe, 12 ... Working arm, 13 ... Excavator, 14 ... Bullet, 15 ... Blade, 16 ... Guide part, 17 ... Rotating shaft mounting part, 18 ... Drive means connection part, 19 ... Connection member, 20 ... Guide Member: 24 ... Rotating shaft 25 ... Link mechanism 26 ... Hydraulic cylinder 32 ... Starting side bullet culvert, 33 ... Bullet underdrain, 34 ... Terminal side culvert, 41 ... Inclined ground, 42 ... Flat ground, 43 ... Arc Bullet culvert, 44 ... bullet culvert

Claims (3)

A base end of a blade having a bullet for forming a culvert at the tip is attached to the tip of a backhoe arm via a horizontal rotation shaft, and the blade is inserted in the ground. to the working position, the bullet is provided a driving means capable of turning respectively about said pivot shaft to be both a standby position of the backhoe side and counter backhoe side located on the ground, working the drive means of the backhoe A bullet culvert forming apparatus using a hydraulic cylinder for driving an excavator provided on an arm . A method for forming a bullet culvert for drainage in the ground using the bullet culvert forming apparatus according to claim 1, wherein the bullet is allowed to enter the ground at one of the standby positions by the driving means. The blade is rotated so as to be positioned at the position, and then the blade is rotated by the drive means so that the bullet enters the ground and is moved to the working position, and the bullet is advanced by the backhoe. A bullet culvert forming method , comprising: forming a bullet culvert inside, and rotating the blade so that the bullet is positioned at the other standby position . A method of forming a projectile culvert of drainage in the ground leading to flat ground from slopes using bullet underdrain forming apparatus according to claim 1 Symbol placement, the projectile by the drive means at a waiting position counter backhoe side and the blade is rotated to be located enters ready in the ground slopes, then allowed to enter the projectile rotates the blades into the ground slopes by the drive means, further, bullet The blade is rotated to the working position to reach the ground on the flat ground, and the bullet is advanced by the backhoe to form a bullet culvert in the ground on the flat ground, and then the bullet is at the standby position on the backhoe side. A method for forming a bullet culvert, wherein the blade is rotated so as to be positioned.

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