JPH1037237A - Ditch backfilling device and ditch backfilling method and ditch backfilling device with ditch excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To backfill the earth and sand dug out when a ditch is excavated with safety and higher efficiency in a shorter time. SOLUTION: Two earth removal plates 4 and two blades 3, which are expanded forward in the shape of the figure 8 on a running vehicle 2 in the advancing direction. Each lower end of these earth removal plated 4 and blades 3 is held along the vicinity of the ground and the vehicle 2 is adapted to run across a ditch R, thereby moving the blades 3 which precedes the earth and sand deposited close to the ditch on both sides near the ditch R up to the ditch R and burying the construction item L. The earth and sand deposited at a position distant from the ditch R is moved to the ditch R along the earth removal plates 4 which follow and are adapted to fall down on the previously backfilled earth and sand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove backfilling device for burying a pipe or a cable in an excavated groove, a groove backfilling method, and a groove backfilling device with a groove excavating device.

[0002]

2. Description of the Related Art Generally, a trench is excavated by using an excavating machine such as a trencher or a backhoe, a laying object such as a pipe or a cable is laid at the bottom of the trench, and then the earth and sand is buried again to bury the laying object. That is being done.

[0003] This backfilling work is also performed manually by a worker using a scoop, but usually, the backfill work shown in FIG.
As shown in FIG. 0, a bulldozer provided with an earth removal plate at the front of a vehicle is used.

[0004]

By the way, the earthing plate of the bulldozer is arranged so that one end on the left and right ends ahead of the other end, and the earthing plate from the leading end toward the other end. Because it is made to move the earth and sand along, in order to backfill the excavated and deposited earth and sand on both sides of the trench, it is necessary to perform backfill work one by one,
There is a problem that it takes time to work. In addition, it is necessary to position a wheel or a crawler (infinite track) at the edge of the groove, and at the same time, run the vehicle so that the vehicle does not fall into the groove. Also, at this time, the edge of the groove may be landslide due to the weight of the vehicle, and there is also difficulty in safety.

Further, if the earth and sand are simply buried back, if the earth and sand are dug later using a backhoe or the like for maintenance and inspection, there is a possibility that the laid object L such as a pipe may be erroneously damaged (FIG. 31 (a)). reference). For this reason, FIG.
As shown in (b), after the earth and sand are buried back to an appropriate depth above the laid object L such as a pipe, 30
A marker m such as a tape or a film having a width of about 200 mm is placed, and the earth and sand are further buried thereon.

[0006] In order to perform such backfill work, a laid object L is laid at the bottom of the groove R, earth and sand are backfilled to an appropriate depth, and a marker m is laid thereon. It is necessary to work according to the procedure of backfilling the earth and sand,
There is a problem that workability is reduced and the construction period is lengthened.

On the other hand, when digging the trench R and laying the laid object L, and then backfilling the excavated earth and sand, if a large stone or a sharply angled stone collides with the pipe, the laid object L may be cast iron or the like. There is no problem when the strength is high as above, but PVC
In the case of a plastic pipe such as a pipe, the strength is low and the pipe may be broken, cracked, deformed, or the like. In addition, the buried pipes are compressed by land subsidence and traffic of vehicles, and are damaged by large stones, sharply squared stones, or stones scattered at the bottom of the groove R that are mixed in the backfilled earth and sand. Then, since the damaged portion is not known from the ground surface, it is necessary to perform excavation with an aim, which requires a lot of man-hours and cost.

[0008] For this reason, it is preferable to bury the soil around the pipe so that only soil and sand are in contact with it. In the case of backfilling, large stones, sharply angled stones, and the like collide with the laid object L, and the stones are backfilled in contact with the laid object L. Therefore, depending on the type of the laid object L, the above-described danger such as breakage cannot be avoided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a groove backfilling device capable of safely and quickly backfilling excavated earth and sand when excavating a groove. In particular, an object of the present invention is to provide a groove backfilling device that can be buried with a marker serving as a mark when excavating earth and sand at a later date.

Another object of the present invention is to provide a method for backfilling a trench which can efficiently backfill the excavated earth and sand when the trench is excavated. In particular, the present invention provides a marker which is used as a marker when excavating earth and sand at a later date. Are provided at the same time.

Furthermore, the present invention can separate and excavate earth and sand excavated at the time of excavation of a ditch, into fine earth and coarse stone, and the like.
This is to provide a trench backfilling device with a trench digging device that can backfill coarse earth and sand on fine earth and sand.Especially, bury the matching marker that will be used when digging the earth and sand later. It is intended to provide a groove backfilling device with a groove digging device.

Another object of the present invention is to provide a method for backfilling a groove which can be backfilled so as not to adversely affect an object laid on the bottom of the groove. An object of the present invention is to provide a method for backfilling a groove in which a marker serving as a mark can be buried at the same time.

[0013]

According to a first aspect of the present invention, there is provided an apparatus for backfilling a groove, wherein a traveling vehicle capable of traveling on the ground is provided with two earth discharging plates and two blades shorter than the earth discharging plate. And the two earth-discharge plates are connected to the traveling vehicle and the
The two blades and the two blades are arranged so as to be located between the two blades, and each of the two blades and the two blades is expanded in a 八 shape or an eight shape toward the front in the traveling direction of the vehicle. In addition, the lower edge of each of the earth removal plate and the lower edge of each blade is supported so as to be in contact with the ground, or along the vicinity of the ground, and by running the traveling vehicle across the groove, the vicinity of the groove The sediment deposited on both sides or one side of the above is moved to the groove along the blade and the earth discharging plate, respectively, and is backfilled.

According to a second aspect of the present invention, there is provided a method for backfilling a groove, comprising the steps of: By supporting the blades such that their lower edges contact the ground or along the vicinity of the ground, and by running the traveling vehicle across the groove, the blades are deposited on both sides or one side near the groove. Of the sediment, after moving the sediment deposited at the position near the groove to the groove along the preceding blade and burying the laid material, the sediment deposited at a position distant from the groove along the subsequent earth removal plate And move it to the ditch and drop it on the previously buried earth and sand.

Further, the groove backfilling device according to the ninth aspect of the present invention is configured such that a traveling vehicle capable of traveling on the ground is provided with two earth discharging plates and two blades. The earth plate and the two blades are each expanded in a Λ-shape or an octagon toward the front in the traveling direction of the vehicle, and the lower edge of each earth-discharge plate and the lower edge of each blade contact the ground. As such, or supported along the vicinity of the ground, and a roll-shaped marker is mounted on the earth removal plate or blade or traveling vehicle,
By running the traveling vehicle across the groove, the sediment deposited on both sides or one side near the groove is moved to the groove along the blade and the earth removal plate, respectively, and backfilled. It is characterized in that the marker is extended from the marker and buried.

According to a tenth aspect of the present invention, there is provided a method for backfilling a groove, comprising the steps of: By supporting the blades so that their lower edges are in contact with the ground or along the vicinity of the ground, and by running the traveling vehicle across the groove, both sides near the groove or on one side near the groove After moving the deposited sediment along the preceding blade to the ditch and burying the laid material,
Extend the marker on the soil and lay it, and then
The sediment deposited at a position distant from the groove is moved to the groove along the succeeding earth discharging plate, dropped on the previously buried sediment, and the marker is buried.

On the other hand, a groove backfilling device with a groove digging device according to a twelfth aspect of the present invention is such that the groove digging device is attached to the groove backfilling device. A cylindrical support having a discharge port formed in the upper part, and a rotary shaft rotatably supported by the support and rotatably supported by the support, and a scraping portion provided on an outer peripheral edge of the screw blade. Screw auger, and a sieve connected to the discharge port of the support through a chute. The two blades and the two blades are respectively expanded in a Λ-shape or an eight-shape toward the front in the traveling direction of the vehicle. Lower edge and each blade The lower edge was in contact with the ground, or supported so as to be along the vicinity of the ground, and the traveling vehicle was run with the screw auger of the trench excavator being rotated, and the scraper was scraped off. The earth and sand is lifted upward through a screw auger, and is discharged from the discharge port of the support through a chute and a sieve to excavate a groove. Is separated and discharged to a position away from the groove, and by running the traveling vehicle across the groove, the fine sediment deposited on the both sides near the groove or on one side near the groove and the groove are separated. And sediment containing coarse stones and the like deposited at the shifted positions are moved along the blades and the earth removal plate to the grooves and backfilled.

According to a thirteenth aspect of the present invention, there is provided a method for backfilling a groove, comprising: causing a traveling vehicle to travel while a screw auger is rotated; Excavated by excavating the ditch by lifting with a screw blade and discharging through a sieve, sifting the excavated sediment to close the dirt near the ditch near the ditch, and separating from the ditch At the position, the coarse stones are sorted and discharged, and further, two discharging plates and two blades are respectively expanded in a Λ-shape or an 8-shape toward the front in the traveling direction of the traveling vehicle. Are supported so that their lower edges contact the ground or along the vicinity of the ground, and the traveling vehicle runs across the groove, so that the fines deposited near the groove After moving the earth and sand along the preceding blade to the groove and burying the laid material, move the earth and sand including coarse stones deposited at a position away from the groove to the groove along the subsequent earth removal plate. It is characterized in that it is dropped onto fine earth and sand that has been buried earlier.

Further, according to a fourteenth aspect of the present invention, there is provided a trench backfilling device provided with a trenching device, wherein the trenching device is attached to the trench backfilling device. A cylindrical support having a discharge port formed in the upper part, and a rotary shaft rotatably supported by the support and rotatably supported by the support, and a scraping portion provided on an outer peripheral edge of the screw blade. Screw auger, and a sieve connected to the discharge port of the support through a chute. The two blades and the two blades are respectively expanded in a Λ-shape or an eight-shape toward the front in the traveling direction of the vehicle. Lower edge and each break The lower edge of each is supported so as to be in contact with the ground, or along the vicinity of the ground, and furthermore, a roll-shaped marker is mounted on the earth discharging plate or the blade or the traveling vehicle, and the screw of the digging device is The traveling vehicle is run with the auger rotated, the earth and sand scraped off by the scraper is lifted upward through the screw auger, and the groove is excavated by discharging it from the discharge port of the support through a chute and a sieve. In this case, the sieve is used to separate fine sand and dirt toward the groove, coarse stones and the like are separated and discharged at positions away from the groove, and the traveling vehicle travels across the groove, thereby forming the groove. The fine sediment deposited near the ditch on both sides or one side nearby and the sediment containing coarse stones deposited away from the ditch The method is characterized in that the marker is moved along the blade and the earth removal plate to the groove and backfilled, and when the earth and sand is backfilled, the marker is drawn out from the roll-shaped marker and embedded.

According to a fifteenth aspect of the present invention, in the method for backfilling a groove, a traveling vehicle is driven with the screw auger rotated, so that the soil is removed by a scraping portion provided on an outer peripheral edge of the screw blade. Excavated by excavating the ditch by lifting with a screw blade and discharging through a sieve, sifting the excavated sediment to close the dirt near the ditch near the ditch, and separating from the ditch At the position, the coarse stones are sorted and discharged, and further, two discharging plates and two blades are respectively expanded in a Λ-shape or an 8-shape toward the front in the traveling direction of the traveling vehicle. Are supported so that their lower edges contact the ground or along the vicinity of the ground, and the traveling vehicle runs across the groove, so that the fines deposited near the groove After burying the laying object by moving the earth and sand along the preceding blade to the groove, lay out by laying out the marker on the fine earth and sand, and then the coarse stone deposited at a position away from the groove The method is characterized in that the earth and sand including such as is moved to the groove along the succeeding earth discharging plate, dropped on the previously buried fine earth and sand, and the marker is buried.

[0021]

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

FIG. 1 shows a groove backfilling device 1 according to the present invention. This backfilling device 1 is provided on a front portion of a traveling vehicle 2 that can travel with a power source (not shown). It comprises two blades 3, 3 and two left and right earth discharge plates 4, 4 arranged between the blades 3, 3 and the traveling vehicle 2.

These blades 3, 3 connect their inner edges to each other and move forward in the vehicle traveling direction.
It is formed so as to expand in a (lambda) shape, and the lower edge of each of them is in contact with the ground or along the vicinity of the ground. Are fixed via the connecting member 31. The outer edge of each blade 3 is set so as to be located near a groove portion of earth and sand that is dug out during the excavation of the groove R and is continuously deposited on the left and right sides of the groove R.

The earthing plates 4, 4 are also formed so that their inner edges are connected to each other so as to expand in the shape of a letter toward the front in the vehicle traveling direction. Is fixed to the traveling vehicle 2 via a connecting member 41 such as an angle material, a channel material, or a pipe so as to be in contact with or along the vicinity of the ground. Then, the outer edge of each of the earth removal plates 4 is dug out when the groove R is excavated, and
It is set so that it is located further outside than the sediment continuously deposited on the left and right of.

The cross-sectional shape of each of the blades 3 and the earth discharging plate 4 is not only a flat plate shape in which the lower end edge precedes the upper end edge (see FIG. 2A), but also a hollow shape. For example, the vicinity of the lower end is bent or curved forward (see FIGS. 2B and 2C), and the upper and lower ends are curved forward (see FIG. 2D). Further, an arc shape (see FIG. 2E) can be selected.

Therefore, when the traveling vehicle 2 travels across the groove R, the soil deposited at the time of excavation of the groove R and distributed to the left and right thereof is firstly deposited at a position close to the groove. The earth and sand is moved in the direction of the inner edge along the preceding blades 3 and 3 and falls into the groove R, burying the laid object L such as a pipe, and then the earth and sand deposited at a position away from the groove The sediment deposited on the left and right sides of the groove R is backfilled at one time because it is moved toward the inner edge along the succeeding soil discharge plates 4 and 4 and falls on the previously filled backfill. The working time, and thus the construction period, can be greatly reduced. In addition, since it is sufficient to allow the vehicle to travel so that the straddled groove R is located substantially at the center of the wheel or crawler of the traveling vehicle 2, it is possible to work without paying much attention. There is almost no risk of collapse and work can be done safely.

In this case, if large stones or sharply angled stones are mixed in the earth and sand to be backfilled, the stones collide with the laid object L such as a pipe at the time of backfilling. The stone is buried in contact with the laid object L. In particular, a plastic pipe having a low pipe strength may be damaged at the time of backfilling, or by land subsidence or traffic of vehicles such as trucks. For this reason, the apparatus and method for backfilling the excavated earth and sand as it is, as shown in FIG. 3 (a), in the case of soil that does not contain stones such as fields and sandy areas, or as shown in FIG. It can be suitably adopted when burying a pipe having strength like a pipe.

In the above-described embodiments of the blades 3 and 3 and the earth discharging plates 4 and 4, the case where the inner edges thereof are connected to each other to close the central portion and form a Λ shape is exemplified. However, the central portion may be opened without connecting the inner edges to each other, and may be formed in an eight-letter shape. In this case, while each blade 3 is separately fixed to the earthing plate 4 located behind each via the connecting member 31, each earthing plate 4 is separately fixed to the traveling vehicle 2 via the connecting member 41. , So that the lower edges of the blade 3 and the earth discharging plate 4 are in contact with the ground, or
What is necessary is just to support along the vicinity of the ground.

The blades 3 and 3 and the discharge plates 4 and 4
One may be formed in the shape of a letter, and the other may be formed in the shape of an octagon.

Further, the case where the traveling vehicle 2 travels on a crawler has been described as an example, but the traveling vehicle 2 may travel on a wheel.

Incidentally, in the above-described embodiment,
A groove backfilling device 1 is constituted by two blades 3 and 3 and two dumping plates 4 and 4, and these blades 3 and 3
3 and the case where the earth and sand are backfilled into the groove R by the earth removal plates 4 and 4, as shown in FIG. 4, the groove backfilling device 1 includes two blades 3 and 3 and two earth removals. Board 4,
4 and a backing device comprising a blade 3, a blade 4 and a conveying screw 5, which are rotatably provided on the front surface of the blades 4, 4 respectively. The excavated earth and sand excavated by 1 may be backfilled in the groove R.

In this embodiment, two blades 3,
The three and two earthing plates 4, 4 are open without their inner edges being connected, and as a result, the two blades 3, 3 and the two earthing plates 4, 4 It is expanded in a figure eight shape toward the front in the vehicle traveling direction. At this time, each blade 3 is integrally connected to a soil discharge plate 4 located at the rear of each via a staple as a connecting member 31. Each of the earth discharging plates 4 is formed so as to have an arc surface having an inner diameter slightly larger than an outer diameter of a transport screw 5 described later.

Each connecting member 41 fixed to each of the earth discharging plates 4 is rotatably supported about a horizontal axis provided at the tip of a frame 21 protruding forward of the traveling vehicle 2. A storage cylinder 42 is disposed between each of the connecting members 41 and the frame 21. Therefore, by extending and retracting the storage cylinder 42, each of the earth discharging plates 4 and each of the blades 3 integrally connected to each of the earth discharging plates 4 are moved along the working position or the vicinity of the ground where the lower edge thereof is in contact with the ground. The rotation can be performed between a work position (see a solid line position in FIG. 4B) and a storage position above each work position (see a chain line position in FIG. 4B).

On the other hand, each transport screw 5 comprises a rotating shaft 51 and a spiral screw blade 52 provided on the rotating shaft 51, and the rotating shaft 51 is arranged such that the lower end of the outer periphery of the screw blade 52 is substantially in contact with the ground. Each of the earth discharging plates 4 is rotatably supported by bearings (not shown) provided at the outer edge and the inner edge of the front surface. A drive motor 53 is attached to the back side of the outer edge of each of the earth removal plates 4.
A transmission mechanism 54 such as a chain sprocket is disposed between the output shaft 3 and the rotation shaft 51 of each transport screw 5. Therefore, by rotating the drive motor 53, each transport screw 5 can be rotated via the transmission mechanism 54.

A support roller 6 is provided at the outer edge of each of the earth discharging plates 4. This support roller 6
Is provided, it is possible to prevent the outer edge of each of the earth discharging plates 4 from sagging under its own weight, thereby cutting the ground and increasing the running resistance.

Further, the outer edge of each of the earth discharging plates 4 can be moved up and down by an elevating mechanism (not shown) attached to the upper part of each of the supporting rollers 6. The gap between the lower edge and the ground can be freely adjusted. That is, it can be set arbitrarily so that the lower edge of each of the earth discharging plates 4 and each of the blades 3 is in contact with the ground or along the vicinity of the ground. Therefore, for example, when a large stone or the like projects on the ground surface, the bottom plate 4 and each of the blades 3 and each of the blades 3 do not collide with the exposed stone. The distance between the lower edge of the blade 3 and the ground may be increased in advance to avoid obstacles.

FIG. 5 shows an example of the lifting mechanism. In the case of this elevating mechanism, a screw rod 62 is rotatably supported by a bracket 61 provided on the outer edge of the earth discharging plate 4, and the screw rod 62 and a support member 64 of the roller 63 are supported.
Female screw 65 is screwed. A handle 66 is attached to the upper end of the screw rod 62. Therefore, by rotating the handle 66, the interval between the lower edge of the earth discharging plate 4 and the lower edge of the roller 63 can be freely set. Therefore, the distance between the lower edge of the earth removal plate 4 and the ground can be set arbitrarily.

A scraping portion 16 is provided at an outer periphery of the screw blade 52 of the transport screw 5 in FIG. 5 at intervals. When the transport screw 5 rotates, the scraping portion 16 is formed into a groove R. It is designed to cut through the sediment deposited near the area. Furthermore, the scraping unit 1
6 also functions to prevent a stone or the like protruding above the ground from being dug up or crushed, thereby preventing the lower edge of the earth discharging plate 4 from being damaged by collision with the exposed stone or the like. .

The scraping section 16 may be a scraping tool 16A made of a steel block as shown in FIG. 5, or a scraping tool 16A having a cemented carbide tip 162 described later (see FIG. 5). 23).

A ski 43 is provided at the tip of the connecting member 41 shown in FIG.
The inner edge of the earthing plate 4 is supported by the weight of the earthing plate 4, the conveying screw 5, the blade 3 and the like so as not to hang down. In other words, the inner edge of each of the earth discharging plates 4 is prevented from hanging down, thereby preventing the ground from being ground and increasing the running resistance.

Further, a chain 44 is stretched between the connecting member 41 and the outer edge of each of the earth discharging plates 4. Thus, when the storage cylinder 42 is contracted to rotate each of the earth removal plates 4 and each of the blades 3 to the storage position distant from the ground, the chain 44 becomes the outer edge of each of the earth removal plates 4 and each of the blades 3. Is lifted and held so that it does not hang under its own weight.

Therefore, when backfilling the groove R, first, the traveling vehicle 2 is moved to a position straddling the excavated groove R, the storage cylinder 42 is extended, and the earth discharging plate 4 and the blade 3 are operated. Rotate to the position. Here, the handle 66 of the support roller 6 is rotated to raise and lower each of the earth discharging plates 4 and each of the blades 3, and fine adjustment is performed so that their lower edges contact the ground or along the vicinity of the ground. Do. Next, after the drive motor 53 is rotated to drive the transport screw 5 and the traveling vehicle 2 is advanced, when the traveling vehicle 2 is moved forward, the sediment dug out during the excavation of the groove R and distributed to the left and right thereof is deposited near the groove. The sediment is moved toward the inner edge along the preceding blades 3 and falls into the groove R, burying the laid object L such as a pipe. In addition, the sediment deposited at a position away from the groove is scraped off by the screw blade 52 of the transport screw 5, and the spiral screw blade 52 rotates, thereby causing the surface of the arc-shaped discharge plates 4, 4 to be removed. Along the inner edge and falls onto the previously backfilled sediment. Thus, the earth and sand deposited on the left and right of the groove R can be backfilled at a time.

When the backfill operation is completed, the storage cylinder 42 is reduced, the blade 3 and the earth discharging plate 4 are lifted from the operation position to the storage position, and the traveling vehicle 2 can travel to the destination.

FIG. 6 shows the ski 43 shown in FIG.
Instead, a backfilling device 1 in which a plurality of support rollers 6 are provided on each of the earth discharging plates 4 is described. That is, the support roller 6 is provided at the center of the rear side along with the outer edge of each of the earth removal plates 4, and by rotating each handle 66, the rotation of each of the earth removal plates 4 and each of the blades 3 is achieved. The gap between the lower edge and the ground can be adjusted. The other structure is almost the same as that of the embodiment shown in FIG. 4, and thus the detailed description is omitted.

In the embodiment shown in FIGS. 4 and 6, the support roller 6 is provided on the earth discharging plate 4, but may be provided on the blade 3. Alternatively, the supporting roller 6 may be provided on the earth discharging plate 4. May be provided in both.

FIG. 7 shows a backfill apparatus 1 according to the present invention.
Another embodiment is shown. In this embodiment, each of the earth discharging plates 4 and each of the blades 3 are pivotally supported around a horizontal axis C extending in the vehicle traveling direction. In other words, each of the earth discharging plates 4 and the blades 3 integrally connected to each of the earth discharging plates 4 can swing individually in accordance with the inclination of the ground. Although not shown in detail in each of the earth discharging plates 4,
A support roller 6, a ski 43, and the like are provided so that the distance between the inclined ground surface and the lower edge of each of the earth discharging plates 4 and each of the blades 3 is always kept constant.

Therefore, in addition to the case where the earth and sand is deposited on the horizontal ground (see FIG. 8A), the case where the earth and sand is deposited on the ground inclined to one of the right and left sides (see FIG. 8B). ) Or when soil is deposited on the ground where one of the left and right sides is inclined at a certain angle (see FIG. 8C), and when the soil is deposited on the ground that is depressed in a concave shape (see FIG. 8C). 8 (d)) or when earth and sand are deposited on the convexly protruding ground (see FIG. 8 (e)), each of the earth discharging plates 4 and each of the blades are adjusted in accordance with their inclination. 3 can be supported and moved such that their lower edges are in contact with the ground or along the vicinity of the ground. As a result, even if the trench R is excavated on any slope,
It is possible to backfill the sediment deposited on the left and right at once.

The inner edges of the respective earthing plates 4, which are pivotally supported, may not be connected to each other, but are attached to the horizontal axis C as shown in FIG. The connection state may be established by the hinge 45 provided. Further, a universal joint, a connected ring, a hook, or the like can be used instead of the hinge 45.

Further, in the configuration in which the lower end edges of the earth discharging plate 4 and the blade 3 follow the inclined surface of the ground and swing,
As shown in FIG. 10, the present invention can also be applied to the backfilling apparatus 1 in which the conveying screw 5 is provided on the earth discharging plate 4.
In this embodiment, the horizontal axes C, C are set so as to be located in the middle of the respective earthing plates 4 in the longitudinal direction. As a result, each earthing plate 4 and each earthing plate 4 are integrated. The blades (not shown) connected to the rotary shafts are respectively rotated around horizontal axes C, C to correspond to various inclined surfaces.

By the way, the case where earth and sand are backfilled in the groove R by the backfilling device 1 having at least two blades 3 and 3 and two earth discharging plates 4 and 4 has been described. If you simply backfill the soil with
When excavating earth and sand at a later date, there is a possibility that the laid object L such as a pipe may be damaged.

In FIG. 11, a roll-shaped marker M such as a film or a tape is mounted on the traveling vehicle 2, and the soil m is buried back along with the traveling of the traveling vehicle 2, and the marker m is fed out. A groove backfilling device 1 in which a marker m can be buried is described.

Specifically, a guide 22 is provided on the traveling vehicle 2, and a slider 23 is slidably fitted in the guide 22 in the vehicle traveling direction, and a roll-shaped marker M is rotatably supported at the tip of the slider 23. doing. When the marker m is laid, the slider 23 can be fixed to the guide 22 with a pin or the like in a state where the slider 23 is extended, and when not used, the slider 23 is contracted in a state where the slider 23 is contracted.

Here, when the traveling vehicle 2 is run across the groove R while the slider 23 is extended and fixed to the guide 22, the sediment deposited near the groove is applied to the leading blades 3, 3. After moving along the inner edge direction and falling into the groove R, and burying the laid object L such as a pipe,
A marker m fed from the roll-shaped marker M is laid on the earth and sand, and then the earth and sand deposited at a position distant from the groove is directed toward the inner edge along the succeeding earth discharging plates 4 and 4. The marker m is buried when it is moved and falls on the earth and sand that has been previously backfilled.

As a result, the sediment deposited on the left and right of the groove R can be backfilled at one time, and as shown in FIG. Since they can be buried together, the working time can be greatly reduced.

In the embodiment shown in FIG. 11, each connecting member 31 of the groove backfilling device 1 has a staple plate 31A and a backup plate 31B provided perpendicularly to the tip of the staple plate 31A. The backup blade 31 is attached with a vertically movable blade 3 along a vertically extending slit 31a formed in the backup plate 31B. Further, each blade 3 is rotatably supported about a horizontal axis via a hinge 32 provided on each connecting member 31.
With respect to each other. For this reason, the gap between the lower edge of the blade 3 and the ground can be independently adjusted independently of the gap adjustment between the lower edge of the earth removal plate 4 and the ground, and it is necessary to backfill the soil with the blade 3. When not, only the blade 3 can be raised to the storage position.

The base end of the earth discharging plate 4 is rotatably supported around a vertical axis, and the vicinity of the distal end of the earth discharging plate 4 is supported by an arm 45 supported by the connecting member 41. ,
The inclination angle of the earth discharging plate 4 for guiding the earth and sand to the groove R is kept constant. Therefore, by adjusting the length of the arm 45, the inclination angle of the earth discharging plate 4 can be arbitrarily set according to the type of earth and sand.

In this embodiment, the roll-shaped marker M is provided on the traveling vehicle 2 as an example. However, as shown in FIG. 13, the blade 3 constituting the backfilling device 1, specifically, the blade 3 , 3 may be provided on a bracket 33 disposed near the inner edge of the inner surface.
May be provided.

When the roll-shaped marker M is provided on the traveling vehicle 2, the guide roller 34 provided on the blade 3 or the like may be wound around and unwound without providing the slider 23 shown in FIG. 14).

Further, the roll-shaped marker M may be supported so as to be rotatable around a vertical axis as shown in FIG. 15 in addition to the case where it is rotatably supported around a horizontal axis. Alternatively, it may be made to extend from the center.

Now, as described above, the traveling vehicle 2
The backfilling apparatus 1 provided with the blades 3 and 3 and the earth discharging plates 4 and 4 has been described. But in this case,
Traveling vehicle 2 provided with blades 3 and 3 and earth removal plates 4 and 4
In addition to the above, a traveling vehicle equipped with a trench excavation device for excavating the trench R is required, and the efficiency is poor.

Therefore, it is required that one traveling vehicle can perform the work process of excavating the trench R by the trench excavator and the work process of backfilling the soil R excavated during the excavation into the trench R. Was done.

In other words, at least two work processes of excavating the trench R by the trench excavator and then backfilling the excavated earth and sand in the trench R in the excavation can be performed by one traveling vehicle. It has been demanded to attach a groove excavation device for excavating the groove R to the groove backfilling device 1 provided with the blades 3 and 3 and the earth removal plates 4 and 4 in the traveling vehicle 2.

FIG. 16 shows a backfilling device 1 provided with two blades 3 and 3 and two earth discharging plates 4 and 4 which are expanded in an eight-character shape toward the front in the traveling direction of the traveling vehicle 2. Further, an embodiment is shown in which a trench excavation device 11 for excavating the trench R is provided.

Since the backfilling device 1 has already been described, only the trenching device 11 will be described below in detail.

The groove digging apparatus 11 includes a support 12 pivotally supported on the traveling vehicle 2 so as to be able to move up and down around a horizontal axis, and a screw auger 13 rotatably supported at upper and lower ends on the support 12. The outlet 121a of the support 12 (FIG. 1)
7 and FIG. 18), and a sieve 15 provided on the chute 14 at each of the right and left sides of the support 12.

The support 12 is connected to the tip of a boom 26 which is rotatably supported on a swivel 24 of the traveling vehicle 2 via an up-and-down cylinder 25. That is, the support 12 is undulated. As shown in FIGS. 19 and 20, the support 12 has a substantially semi-cylindrical front cover 121.
And a substantially semi-cylindrical back cover 122 with a U-shaped reinforcing member 123 welded to the outer peripheral surface, and flanges on both sides thereof are connected to each other by bolts and nuts, and assembled into a cylindrical shape. Then, on the upper part of the back cover 122,
A front cover 121 that is shorter than the back cover 122 is provided, and a discharge port 121 is provided above the front cover 121.
a is open. As a result, the screw auger 13 described later can be accommodated in a space having a circular cross section formed by connecting the front cover 121 and the rear cover 122 with the lower half thereof exposed.

The front cover 121 can be selected to have an appropriate length according to the depth of the groove R excavated by the screw auger 13. That is, the position at which the lower end of the support 12 reaches (the depth of the excavation groove R) can be adjusted by the expansion and contraction operation of the undulating cylinder 25, and the ground of the screw auger 13 can be adjusted according to the depth of the excavation groove R. A front cover 121 having an appropriate length may be used so as to cover the upper part from the front. In addition, the excavation groove R
Depending on the depth, an auxiliary front cover (not shown) may be connected to the lower end of the front cover 121 having a fixed length.

On the other hand, the screw auger 13 is formed by welding a screw blade 132 to the outer peripheral surface of a rotating shaft 131, and the rotating shaft 131 is rotatable on bearings 138, 138 provided near the upper and lower ends of the support 12, respectively. It is pivoted on. 21 and 22, a drive motor 133 is attached to the boom 26, and a sprocket 134 fixed to the output shaft of the drive motor 133 and a sprocket 134 fixed to the upper end of the rotary shaft 131. The chain 13 whose tension can be adjusted by the chain tensioner 136a is provided between the chain 13 and the sprocket 135.
6 is wound. Therefore, by rotating the drive motor 133, the rotation shaft 131, that is, the screw blade 13 is rotated via the chain sprocket.
2 can be rotated.

The mounting position of the drive motor 133 for rotating the screw auger 13 is not particularly limited. For example, the drive motor 133 may be disposed on the back cover 122 side of the support body 12. You may make it connect directly to an upper end. The driving motor 133 is
When it is directly connected to the chain, no chain sprocket is required.

The rotary shaft 1 of the screw auger 13
The bearing 138 that supports the upper end of the support 31 is not necessarily the support 1
2 may be provided, for example, near the tip of the boom 26 located above the support 12.

The rotary shaft 1 of the screw auger 13
A tip screw blade 137 (see FIG. 17) is connected to the lower end of the lower end of the lower end bearing 138. For this reason, the tip screw blade 137 scrapes the earth and sand below the lower end bearing 138, and further lifts the earth and sand deposited on the bottom of the groove R. Also,
The rotation of the lower end portion of the screw blade 132 and the tip screw blade 137 welded to the rotating shaft 131 prevents the lower end bearing 138 and the lower end portion of the support 12 from directly contacting the ground and scraping off the soil.

Further, on the outer peripheral edge of the screw blade 132, scraping portions 16 are provided at intervals.
When the screw auger 13 rotates, the scraping unit 16 scrapes off the soil and rocks at the end of the groove R in the traveling direction, and the scraped soil and rocks are taken into the screw blade 132.

The scraping section 16 is, as shown in FIG.
Shaft 161 provided with cemented carbide tip 162 at the tip
Scraper 16 having 61a and circumferential groove 161b formed
The shaft 161 of the scraper 16A is inserted into a hole formed in a holder 163 welded to the lower surface of the outer peripheral edge of the screw blade 132. Circumferential groove 161b of shaft 161 of scraper 16A and holder 163
A ring-shaped spring 164 with a notch is provided in a gap formed by an inner peripheral groove 163a formed in the inner peripheral surface of the hole.
Is attached. Thus, the scraper 16A is held by the holder 163 via the notched ring-shaped spring 164.
Is rotatably supported on the shaft, and the flange 1 of the scraping tool 16A.
61a is brought into contact with the end face of the holder 163. The chip 162 made of cemented carbide of the scraper 16A was used.
In the case where is worn or missing, if the rear end of the shaft 161 is hit, the notched ring-shaped spring 164 is compressed and reduced in diameter, so that the shaft 161 can be pulled out and replaced. The scraping tool 16A has a tip including the cemented carbide tip 162 protruding outward from the outer peripheral edge of the screw blade 132, and its axis is directed obliquely downward in the rotation direction of the screw auger 13. I have.

The scraper 16 A may be provided at a position where the groove R is substantially excavated, specifically, at the screw blade 132 exposed below the front cover 121. However, it is preferable that the holder 163 is previously welded to the screw blade 132 to a height position corresponding to the maximum excavable position in case the depth of the excavated groove R is changed.

The tip screw blade 1 described above
A scraping tool 16 </ b> A as a scraping unit 16 is also provided on the outer peripheral edge of the 37.

By the way, the front cover 121 of the support 12
A chute 14 that is branched in the left-right direction is connected to a discharge port 121a that is opened at an upper part of the chute 14. In addition, sieves 15 and 15 are provided at the tip of each end of the chute 14.

FIGS. 17 and 18 show sieve 1
5 is a horizontal shaft 15a attached to the support 12 and a horizontal shaft 1 of a suspending member 127 suspended from the upper end of the support 12.
5A shows an example in which each end of the chute 14 is pivotally supported by a swing and is inserted into the inside of cylindrical sieve bodies 152 and 152.

As shown in detail in FIG. 24, the sieve 15 has a substantially semi-cylindrical fixed cover 151 whose lower part is opened.
And a sieve body 152 supported via rollers 1511 that are rotatably supported at intervals in the circumferential direction of the fixed cover 151, such as a chain spanned between the fixed cover 151 and the boom 26. The tension member 153 (see FIG. 18) is held at a predetermined angle with respect to the support 12. By adjusting the length of the tension member 153, the sieve 15 is inclined at an arbitrary angle and fixed. can do. For example, if the length of the tension member 153 is increased, the inclination angle of the sieve 15 becomes steep, and if the length of the tension member 153 is reduced, the inclination angle of the sieve 15 approaches a horizontal state. Therefore, some viscosity, sand, stones,
The inclination angle of the sieve 15 with respect to the support 12 can be freely changed in accordance with conditions such as the quality of sliding.

The fixed cover 151 is provided with a drive motor 154. The sprocket 155 and the sieve body 15 fixed to the output shaft of the drive motor 154 are provided.
2 between the sprockets 156
Is wound. Therefore, by rotating the drive motor 154, the sieve body 152 can be rotated with respect to the fixed cover 151 while being supported by the roller 1511 via the chain 157 and the sprockets 155 and 156.

At this time, in order to prevent the sieve body 152 from dropping in the direction of the rotation axis, the fixing cover 15
A support roller 1512 has a rotation axis in the radial direction of the sieve main body 152 and can be in contact with a flange 1521a of an outer ring 1521 of the sieve main body 152 at an interval.

On the other hand, the sieve body 152 is
A plurality of bars 1522 are arranged at intervals on the inner surface of an outer peripheral ring 1521 for rolling a roller 1511 that is rotatably supported at intervals in the circumferential direction of 51, and both ends are formed at both ends. It has a substantially cylindrical shape that is open. In addition,
Fine soil and sand quickly fall through the gap between the bars 1522 and the bars 1522, and
Coarse stones or the like having a size larger than the gap between the sieve 2 and the stone 2 are discharged from the front end discharge port 152a of the sieve body 152.

Further, a baffle plate 158 (see FIG. 18) made of rubber, plastic, metal, fabric, or the like is vertically provided on the fixed cover 151 so as to face the distal end outlet 152a of the sieve main body 152. Therefore, coarse stones or the like larger than the distance between the crosspieces 1522 may be used.
When jumping out of 2a, the stones etc. are baffled 158
To attenuate the momentum and prevent it from flying too far out.

Also, since the sieve body 152 rotates,
Stones and the like caught in the gap between the crosspieces 1522 are lifted upward from below the sieve body 152, fall naturally by their own weight, and are discharged from the tip discharge port 152a.

The chute 14 has a separator 14
1 is rotatably supported at the base end thereof, and the discharge port 121a
Can be evenly distributed to the left and right. Therefore, when the excavated earth and sand cannot be deposited on the left and right of the groove R due to the surrounding conditions, the sediment can be discharged to only one side of the groove R by using the separator 141.

Next, the digging device 11 constructed as described above is used.
The operation of will be described.

First, the tip of the screw auger 13 is brought into contact with the ground. Next, the driving motor 133 is rotated to rotate the screw auger 13, and the traveling vehicle 2 is gradually advanced while the up-and-down cylinder 25 is reduced. By doing so, the tip of the screw auger 13 reaches a desired depth without the tip of the support 12 scraping the ground or the bottom of the groove R. Here, the lower end of the front cover 121 is located near the ground surface.

When the traveling vehicle 2 travels in this state, the scraper 16A projecting from the outer peripheral edge of the spiral screw blade 132 attached to the screw auger 13 scrapes off the soil at the tip of the groove R. And drop it onto the screw blade 132.

At this time, since the support 12 that supports the upper and lower ends of the screw auger 13 is strongly reinforced by the reinforcing member 123, it supports a large load applied to the screw auger 13 when the groove R is excavated. , Rotating shaft 1
It is possible to prevent the rear cover 31 and the rear cover 122 from being deformed.

The scraper 16 is attached to the outer peripheral edge of the screw blade 132 attached to the screw auger 13.
By providing A, even if the earth and sand contains rock, the rock can be scraped or crushed and taken into the screw blade 132.

On the other hand, the earth and sand that has fallen on the upper surface of the screw blade 132 is substantially cylindrically formed by the semi-cylindrical back cover 122 and the front end of the substantially semi-cylindrical groove R when the screw blade 132 rotates. 20 (see FIG. 20). Initially, the pushed up earth and sand is partially pushed out through a gap between the front cover 121 of the support 12 and the ground. And
The extruded earth and sand accumulates on the ground in front of the front cover 121 in a small mountain shape. In this way, the gap between the front cover 121 and the ground is closed, and when the accumulated sediment reaches a certain amount, the mound-shaped sediment acts as a resistance, thereby preventing further extrusion of the sediment.

Therefore, hereafter, the screw blade 1
32, which has been pushed up by the back cover 1
Through a cylindrical space (see FIG. 19) formed by the front cover 121 and the front cover 121, it is pushed up to a discharge port 121 a formed above the front cover 121, and is discharged from the discharge port 121 a. .

[0092] The earth and sand discharged from the discharge port 121a passes through the chute 14 branched in the left-right direction and is sieved.
Introduced in 5,15, the fine sand etc. is the sieve body 1
52 through the gap between the cross-sections 1522 and 1522
Fall on the ground near the edge of
Coarse stones larger than the gap with the sieve body 152
Is discharged from the front end discharge port 152a. In addition, since the sieve body 152 rotates, stones and the like caught in the gap between the bars 1522 are lifted upward from below the sieve body 152, fall naturally by their own weight, and are discharged from the distal end outlet 152a.

For this reason, fine sand or the like accumulates in the vicinity of the groove R, and on the other hand, the selected coarse stones or the like accumulate in the baffle 1.
The momentum is attenuated by 58, and is deposited at a position not too far from the groove R (see FIG. 25).

In this manner, the relatively wide groove R corresponding to the outer diameter of the screw blade 132 is formed with a substantially constant depth.
It can be excavated continuously in a straight line or in a curved line. At this time, the traveling speed can be arbitrarily set depending on conditions such as soil properties, types of rocks contained in the soil, and the like. The excavated earth and sand is excavated
Since the sediment is deposited only in a small area in the vicinity of, the excavated earth and sand does not scatter over a wide area and pollute the surrounding environment.

On the other hand, when the trench R is excavated, a laid object L such as a pipe is laid at the bottom thereof. In this case, the groove R is
Since the excavation is performed in a relatively wide width substantially corresponding to the outer diameter of the screw blade 132, the connection work between pipes and the attachment work of a branch pipe or the like can be easily performed in the groove R. In addition, the work of laying a pipe having a relatively large diameter can be easily performed.

When the work of laying the pipes and the like is completed, the excavated earth and sand may be backfilled by the backfill device 1 for trenches. That is, as described above, when the traveling vehicle 2 travels while straddling the groove R, first of all the earth and sand dug out during the excavation of the groove R and distributed to the left and right, the sediment is deposited at a position close to the groove. The fine earth and sand moving along the preceding blades 3 and 3 is moved toward the inner edge to fall into the groove R and bury the laid object L such as a pipe. Then
Sediment containing coarse stones and the like deposited at a position away from the groove is moved in the direction of the inner edge along the succeeding discharge plates 4 and 4, and the fine sediment that has been buried earlier is returned. Fall on

As a result, the sediment deposited near the left and right of the excavated trench R can be backfilled at once, and the work time and
As a result, the construction period can be significantly reduced. Moreover,
As shown in FIG. 26, fine earth and sand is deposited around the laid material L, and the sediment including the coarse-grained stones and the like is deposited thereon. Large stones and sharp-angled stones do not collide with L, and there is only fine soil and sand around the laid object L buried in the ground, due to land subsidence and traffic of vehicles When a large load is applied to the laid object L, a large stone or a sharply angled stone does not compress and damage the laid object L. Therefore, in the case where the laid object L is a plastic pipe such as a PVC pipe having a low strength, the effect is large because the stone is not damaged not only during the embedding work but also after the embedding by a large stone or a sharply angled stone.

As described above, when the trench digging device 11 is attached to the trench R backfilling device 1, it is possible to perform the trench R digging work and the backfilling work of the earth and sand dug at that time. Therefore, the overall cost can be reduced as compared with the case where the trenching device and the backfilling device are separately prepared.

The traveling vehicle 2, the blade 3, or the earth discharging plate 4 of the trench backfilling device 1 provided with the trench excavating device 11.
As shown in FIG. 11, FIG. 13 or FIG. 14, a roll-shaped marker M such as a film or a tape is mounted, and the earth and sand are backfilled by the blades 3 and the earth removal plates 4, and at the same time when the earth and sand is digged later. May be extended and buried above the laid object L.

That is, when the traveling vehicle 2 is run across the groove R, the fine sediment deposited at the position near the groove moves toward the inner edge along the preceding blades 3, 3. It is made to fall into the groove R, and the laid object L such as a pipe is buried. Thereafter, the marker m fed out from the roll-shaped marker M is laid on the fine earth and sand, and then the earth and sand including coarse stones and the like deposited at a position away from the groove are discharged. The marker m is buried on the fine earth and sand that has been moved back along the plates 4 and 4 in the direction of the inner edge and is buried earlier.

As a result, as shown in FIG. 27, not only the earth and sand deposited on the left and right of the groove R can be backfilled at once, but also the fine earth and sand that does not adversely affect the vicinity of the low strength laid object L. Can be backfilled, and the marker m serving as a mark for digging back the soil at a later time during the backfilling work of the earth and sand can be buried together, so that the working time can be greatly reduced.

Further, the configuration shown in FIG. 7 in which each blade 3 and each earth removal plate 4 are pivotally supported around a horizontal axis extending in the vehicle traveling direction, respectively, and a roll-shaped marker M When the configuration shown in FIG. 11 having the structure shown in FIG. 11 is applied to the configuration shown in FIG. In the vicinity of the edge, sediment including coarse stones and the like can be continuously excavated while being separated and discharged to a position away from the groove R, and can be selectively discharged to the left and right of the groove R. The removed earth and sand can be buried at once without adversely affecting the laid object L, and a marker m serving as a mark when excavating the earth and sand later can be buried at the same time (see FIG. 28).

When the traveling vehicle 2 is transferred or stored,
As shown in FIGS. 4, 6, and 11, the storage cylinder 42
Is reduced to rotate each of the earth removal plates 4 and each of the blades 3 to the retracted position.
And, if it is turned to the side of each blade 3, it is possible to eliminate the restriction on the space.

Further, the above-mentioned trench excavating apparatus 11 has a configuration in which the soil excavated by the screw auger 13 is separated into fine sediment and sediment containing coarse stone by a sieve 15 and discharged to both sides of the groove R. However, it is not necessary to sort in the case of burying pipes having strength like cast iron pipes or in the case of soil that does not contain stones such as fields and sandy grounds, so as shown in FIG. 29, Front cover 12
1, without the discharge port 121a, the chute 14, the sieve 15, etc.
It is also possible to employ a groove digging device 11 which only pushes up the earth and sand scraped off in step 6 onto the ground surface and deposits it on both sides of the groove R.

[0105]

As described above, according to the first aspect of the present invention, earth and sand excavated when excavating a trench can be safely and quickly backfilled.

According to the second aspect of the present invention, the earth and sand excavated when the trench is excavated can be efficiently backfilled.

Further, according to the ninth aspect of the present invention, the earth and sand excavated when the trench is excavated can be safely and buried back in a short time, and a marker serving as a mark when excavating the earth and sand later can be used. Can be buried.

According to the tenth aspect of the present invention, it is possible to efficiently backfill the excavated earth and sand when the trench is excavated, and to simultaneously embed a marker serving as a mark when excavating the earth and sand later. it can.

According to the twelfth aspect of the present invention, the excavated earth and sand when the trench is excavated can be separated into fine earth and sand including coarse stones and the like, and can be discharged. The fine earth and sand around the laid object and the earth and sand including coarse stones and the like on the fine earth and sand can be safely and quickly backfilled, respectively.

According to the thirteenth aspect of the present invention, the excavated earth and sand excavated when the trench is excavated can be separated into fine earth and sand including coarse stones and the like, and can be discharged. The excavated earth and sand can be efficiently backfilled without adversely affecting the laid object.

Further, according to the fourteenth aspect of the present invention,
Sediment excavated when the trench is excavated can be separated into fine sediment and sediment containing coarse stones and discharged, and fine sediment around the laid object can be removed. Sediment containing coarse stones and the like can be backfilled in a safe and short time on the surface, and at that time, a marker can be buried together with a marker when digging the earth and sand later.

According to the fifteenth aspect of the present invention, the excavated earth and sand when the trench is excavated can be separated into fine earth and sand including coarse stone and the like, and can be discharged. The excavated earth and sand can be efficiently backfilled without adversely affecting the laid object, and at that time, a marker serving as a mark when excavating the earth and sand later can be embedded at the same time.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state of backfilling earth and sand according to a first embodiment of a trench backfill apparatus of the present invention.

FIG. 2 is a vertical cross-sectional view of a discharge plate.

FIG. 3 is a sectional view of a groove in which earth and sand are backfilled by the groove backfilling device of the present invention.

FIG. 4 is a plan view and a side view showing a second embodiment of the groove backfilling device of the present invention.

FIG. 5 is a perspective view showing a groove backfilling device substantially similar to FIG.

FIG. 6 is a plan view and a side view showing a third embodiment of the groove backfill apparatus of the present invention.

FIG. 7 is a front view showing a fourth embodiment of the groove backfill apparatus of the present invention.

FIG. 8 is an explanatory diagram showing the relationship between earth and sand deposited on the left and right of the excavated trench, the earth removal plate, and the blade.

FIG. 9 is a cross-sectional view showing a part of an example of a rocking mechanism of a soil discharge plate with a part thereof omitted.

FIG. 10 is a front view showing a fifth embodiment of the groove backfill apparatus of the present invention.

FIG. 11 is a plan view and a side view showing a sixth embodiment of the groove backfilling device of the present invention.

FIG. 12 is a sectional view of a groove in which earth and sand are backfilled together with a marker by the groove backfilling device of the present invention.

FIG. 13 is a perspective view showing a groove backfilling device according to a seventh embodiment of the present invention.

FIG. 14 is a side view showing an eighth embodiment of the groove backfill apparatus of the present invention.

FIG. 15 is a perspective view showing a roll-shaped marker mounted on the groove backfilling device of the present invention.

FIG. 16 is an explanatory diagram showing a state of backfilling earth and sand according to an embodiment in which a trench excavating device is added to the trench backfilling device of the present invention.

FIG. 17 is an explanatory view showing a digging state by the digging device shown in FIG. 16;

FIG. 18 is an explanatory view showing a digging state by the digging apparatus shown in FIG. 16;

19 is a sectional view taken along line AA of FIG.

20 is a sectional view taken along line BB of FIG. 17;

21 is a sectional view taken along line CC of FIG. 18;

22 is a sectional view taken along line DD of FIG. 21.

FIG. 23 is a perspective view showing a scraper provided on a screw auger, a cross-sectional view thereof, and an exploded perspective view showing a partly omitted illustration.

FIG. 24 is a front view, a cross-sectional view taken along the line EE, and a cross-sectional view taken along the line FF of the sieve provided in the trenching apparatus.

FIG. 25 is an explanatory diagram of sediment sorted and deposited on the left and right of the groove when the groove is excavated by the groove excavator shown in FIG. 16;

26 is a cross-sectional view of the groove in a state where the earth and sand shown in FIG. 25 are backfilled by the groove backfilling device of the present invention.

FIG. 27 is a cross-sectional view of the groove in a state in which the soil and sand shown in FIG. 25 are back-filled by the marker back-feeding device by the groove back-filling device of the present invention.

FIG. 28 is an explanatory diagram showing the relationship between earth and sand that have been excavated and sorted by the trench excavator shown in FIG. 16 and are deposited on the left and right sides of the trench, and a soil discharge plate and blades.

FIG. 29 is an explanatory view showing a groove digging state according to another embodiment of the groove digging apparatus.

FIG. 30 is an explanatory diagram showing an operation state in which earth and sand dug out by a bulldozer are backfilled.

FIG. 31 is an explanatory diagram in the case where earth and sand are dug at a later date.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 groove backfilling device 2 traveling vehicle 24 turntable 25 hoisting cylinder 26 boom 3 blade 31 connecting member 4 earth discharging plate 41 connecting member 5 transport screw 51 rotating shaft 52 screw blade 53 drive motor 54 transmission mechanism 6 support roller 66 handle 11 Grooving device 12 Support body 121 Front cover 121a Discharge port 122 Back cover 13 Screw auger 131 Rotary shaft 132 Screw blade 14 Chute 141 Separator 15 Sieve 151 Fixed cover 152 Sieve body 16 Scraping unit 16A Scraper R Groove L M Roll marker m Marker

Claims (15)

[Claims] A traveling vehicle capable of traveling on the ground is provided with two earth removal plates and two blades shorter than the earth removal plate. The two earth removal plates are composed of the traveling vehicle and the two blades. And the two blades and the two blades are respectively expanded in a Λ shape or an octagon toward the front in the traveling direction of the vehicle. The lower edge of each of the earth removal plates and the lower edge of each of the blades are supported so as to be in contact with the ground or along the vicinity of the ground, and by running the traveling vehicle across the groove, the vicinity of the groove is reduced. An apparatus for backfilling a groove, wherein soil and sand deposited on both sides or one side are moved to a groove along a blade and an earth removal plate, respectively, and backfilled. 2. A two-sided discharging plate and two blades, each of which is expanded in a Λ-shape or an octagonal shape toward the front in the traveling direction of the traveling vehicle, such that their lower edges are in contact with the ground. Alternatively, by supporting the vehicle along the vicinity of the ground and running the vehicle across the groove, the sediment deposited at the position near the groove out of the sediment deposited on both sides or one side near the groove After moving along the blade to the ditch and burying the laid material, the sediment deposited at a position away from the ditch is moved to the ditch along the subsequent earth removal plate, and the soil A method of backfilling a groove, characterized in that the groove is filled into the groove. 3. The groove backfill according to claim 1, wherein the two earth discharging plates and the two blades are formed so as to have a longitudinal section curved in a flat plate shape or a hollow shape. apparatus. 4. The groove backfilling device according to claim 1, wherein each of the two blades and / or the two blades is provided with one or a plurality of support rollers. 5. The supporting roller is provided on each of the earth removal plates and / or blades via an elevating mechanism, so that the distance between the lower edge of the earth removal plate and / or the blades and the ground can be adjusted by the elevating mechanism. 5. The groove backfill apparatus according to claim 4, wherein the groove is backfilled. 6. A rotatable transport screw is provided along the front side of each of the two earth-discharge plates, and the transport screw is rotated to deposit at a position near both sides of the groove or away from one side of the groove. 2. The trench backfilling device according to claim 1, wherein the soil is forcibly moved and guided to the trench. 7. The two discharge plates and / or the two blades are selected between a work position where their lower edges contact the ground or near the ground and a storage position away from the ground. 2. The groove backfilling device according to claim 1, wherein the groove is backfilled. 8. The two discharge plates and / or the two blades are each rotatable about a horizontal axis extending in the vehicle traveling direction, and each lower end edge of the two discharge plates and / or two blades is grounded according to the inclination of the ground. 2. The groove backfilling device according to claim 1, wherein the device is rotated to a working position in contact with the work or a working position along the vicinity of the ground. 9. A traveling vehicle capable of traveling on the ground is provided with two earth removal plates and two blades, and these two earth removal plates and two blades are respectively provided in the traveling direction of the vehicle. While being expanded in the shape of a letter or an eight-letter toward the front, the lower edge of each earth removal plate and the lower edge of each blade are supported in contact with the ground, or along the vicinity of the ground, Further, a roll-shaped marker is mounted on the earth removal plate or blade or the traveling vehicle, and the traveling vehicle travels across the groove, so that the sediment deposited on both sides or one side near the groove can be removed by the blade and the earth removal plate, respectively. A groove backfilling device characterized in that the groove is backfilled by moving to a groove along the path and backfilling, and at the time of backfilling of earth and sand, a marker is fed out from a roll-shaped marker and buried. 10. A pair of earth-discharge plates and two blades, each of which is expanded in a Λ-shape or an octagon-shape toward the front in the traveling direction of the traveling vehicle, such that their lower edges contact the ground. Or support along the ground,
By running the traveling vehicle across the groove, the sediment deposited on both sides or near one of the grooves near the groove is moved along the preceding blade to the groove, and the laid object is buried. The marker is fed out and laid, and then the sediment deposited at a position away from the groove is moved along the subsequent soil discharge plate to the groove, dropped on the previously buried sediment, and the marker is buried. A method of backfilling a groove. 11. The traveling vehicle has a substantially cylindrical or substantially semi-cylindrical support having at least a lower front portion opened.
A screw auger housed in this support with at least the lower front half exposed; the screw auger has a rotating shaft rotatably supported with respect to the support and scrapes against the outer peripheral edge of the screw blade. The groove backfilling device according to claim 1, further comprising a groove excavating device provided with a cutting portion. 12. A trenching device is attached to a trench backfilling device. The trenching device has a cylindrical support having a lower front surface opened and a discharge port formed in an upper portion, and A screw auger that is housed, the rotation shaft is rotatably supported with respect to the support, and a scraper is provided on the outer peripheral edge of the screw blade, and a sieve connected to the discharge port of the support via a chute The groove backfilling device comprises a traveling vehicle capable of traveling on the ground, provided with two earth removal plates and two blades, and the two earth removal plates and two blades are provided. The blades are each expanded in the shape of a letter or eight toward the front in the traveling direction of the vehicle, and the lower edge of each of the earth discharging plates and the lower edge of each blade are in contact with the ground, or Along the ground The traveling vehicle is run with the screw auger of the groove excavator rotated, and the earth and sand scraped off by the scraping unit is lifted upward through the screw auger, and is discharged from the support outlet. Drilling is performed by discharging through a chute and a sieve, and at this time, the fine sediment is separated by the sieve toward the groove, and coarse stones and the like are separated and discharged at a position away from the groove. By running the traveling vehicle across the bridge, the soil containing fine sand deposited on both sides near the groove or near the groove on one side and the coarse sand deposited at a position away from the groove is respectively bladed And a backfilling device for a groove with a digging device, which is moved to a groove along a soil removal plate and backfilled. 13. Running a running vehicle while rotating a screw auger, scraping off earth and sand at a scraping portion provided on an outer peripheral edge of the screw blade,
Excavate the ditch by lifting it with a screw blade and discharging through a sieve.At this time, the excavated soil is sifted, and fine sediment near the ditch near the ditch,
The coarse stones and the like are separated and discharged at a position away from the groove, and furthermore, two discharging plates which are respectively expanded in a Λ-shape or an 字 -shape toward the front in the traveling direction of the traveling vehicle, and By supporting the two blades so that their lower edges are in contact with the ground or along the vicinity of the ground, and by running the traveling vehicle across the groove, the fine sediment deposited near the groove After burying the laying object by moving it along the preceding blade to the groove, move the sediment containing coarse stones etc. deposited at a position away from the groove to the groove along the subsequent earth removal plate A method of backfilling a groove, characterized by dropping it onto fine earth and sand that has been backfilled earlier. 14. A groove digging device is attached to a groove backfilling device. The groove digging device has a cylindrical support having a lower front surface opened and a discharge port formed on an upper portion thereof. A screw auger that is housed, the rotation shaft is rotatably supported with respect to the support, and a scraper is provided on the outer peripheral edge of the screw blade, and a sieve connected to the discharge port of the support via a chute The groove backfilling device comprises a traveling vehicle that can travel on the ground, and is provided with two earth removal plates and two blades, and these two earth removal plates and two blades are provided. The blades are each expanded in the shape of a letter or eight toward the front in the traveling direction of the vehicle, and the lower edge of each of the earth discharging plates and the lower edge of each blade are in contact with the ground, or Along the ground Further, a roll-shaped marker is mounted on the earth removal plate or the blade or the traveling vehicle, and the traveling vehicle travels with the screw auger of the trench excavator rotated, and the scraping unit scrapes the traveling vehicle. The ditch is excavated by lifting the sediment taken upward through a screw auger and discharging it through a chute and a sieve from the discharge port of the support,
The sieve is used to sieve fine soil and sand close to the ditch, and coarse stones etc. to be separated from the ditch and discharged.
In addition, by running the traveling vehicle across the groove, fine soil deposited on both sides in the vicinity of the groove or near the groove on one side and coarse stones deposited at a position away from the groove and the like. Characterized in that the backfill is moved along the blade and the earth removal plate to the groove and backfilled, and at the time of backfilling the earth and sand, the marker is drawn out from the roll-shaped marker and buried therein. 15. When the traveling vehicle travels while the screw auger is rotated, the earth and sand is scraped off by a scraping section provided on an outer peripheral edge of the screw blade.
Excavate the ditch by lifting it with a screw blade and discharging through a sieve.At this time, the excavated soil is sifted, and fine sediment near the ditch near the ditch,
The coarse stones and the like are separated and discharged at a position away from the groove, and furthermore, two discharging plates which are respectively expanded in a Λ-shape or an 字 -shape toward the front in the traveling direction of the traveling vehicle, and By supporting the two blades so that their lower edges are in contact with the ground or along the vicinity of the ground, and by running the traveling vehicle across the groove, the fine sediment deposited near the groove After moving to the groove along the preceding blade and burying the laid object, lay out by laying out the marker on the fine earth and sand,
The sediment containing coarse stones deposited away from the ditch is moved along the subsequent earth removal plate to the ditch, dropped on the fine-grained sediment backfilled, and the marker is buried. A method of backfilling a groove.