JP4111264B2 - Slope excavator and its excavation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an excavator used for excavating and leveling a surface such as a wasteland before creation, and more particularly to a slope excavator suitable for excavating a slope and an excavation method thereof.
[0002]
[Prior art]
Conventionally, in order to level the slope, a Yumbo or a bulldozer is placed on the slope. For example, a bulldozer can attach a large blade (earthwork board, earth discharging board) to the front surface of a vehicle (endless chain tractor) and level the earth and sand in front of the vehicle with this blade. Alternatively, as disclosed in the following document, instead of the blade, a rotary excavator formed by projecting a plurality of excavating blades on the peripheral surface of the rotary drum is attached to the vehicle, and such excavator is used. A technique for leveling the unevenness of the surface of the vehicle by getting the vehicle into a wasteland or the like while starting up is well known.
[0003]
[Patent Document 1]
Japanese Patent Publication No. 53-1962 [0004]
[Problems to be solved by the invention]
However, if the slope is steep, if a vehicle such as a Yumbo or a bulldozer is placed on such a slope, there is a danger of landslides, so the safety of the operator (operator) who operates the vehicle is ensured. From this viewpoint, unmanned ground leveling work on the slope is an urgent issue.
[0005]
In addition, a large trailer or the like is required for transporting a vehicle such as a yumbo or a bulldozer, and the incidental work associated with leveling becomes large. In addition, these vehicles are suitable for leveling work on a wide range of land, but it is often difficult to get on a narrow land for a detached house or a slope adjacent to it.
[0006]
Accordingly, an object of the present invention is to provide a slope excavator and an excavation method thereof that realize automation and labor saving of leveling work by excavation of a slope.
[0007]
[Means for Solving the Problems]
A slope excavator according to the present invention includes an endless chain in which a plurality of rails are cascaded, a drive source that drives the endless chain in the column direction of the plurality of rails, and a tread of the rails And a support device for positioning the endless chain.
[0009]
Furthermore, in the slope excavator according to the present invention, the excavating blade is pin-bonded to the tread surface of the railing plate, the tiltable blade capable of swinging the blade tip in the column direction, and the tiltable blade protrudes from the tread surface. A biasing means, a stopper that positions the tiltable blade in a posture that protrudes from the tread surface, and that allows the tiltable blade to fall on the tread surface against the biasing means; A leveling blade having a protruding dimension from the tread surface shorter than the tiltable blade is provided.
[0010]
Further, in the slope excavator according to the present invention, the support device includes a main frame that supports the endless chain body in a posture in which the tread surface can come into contact with the ground, and a plurality of positions provided at positions opposite to the main frame. A leg body and a cylinder for moving the lower ends of the plurality of leg bodies up and down relative to the main frame are provided.
[0011]
Further, in the slope excavator according to the present invention, the support device includes a plurality of legs that are pin-joined at the upper ends so as to be pivotable to opposite positions of the main frame, and extend at the lower ends below the treads. And a cylinder that moves the lower ends of the plurality of legs up and down relative to the main frame by swinging the plurality of legs in a direction crossing the column direction of the rail plate.
[0012]
Further, in the slope excavator according to the present invention, the support device includes a plurality of legs that are pin-joined at the upper ends so as to be pivotable to opposite positions of the main frame, and extend at the lower ends below the treads. A cylinder that vertically moves the lower ends of the plurality of legs with respect to the main frame by swinging the plurality of legs in a direction crossing the column direction of the rails, and the leg lengths of the plurality of legs are expanded and contracted. An expansion cylinder.
[0013]
Furthermore, in the slope excavator according to the present invention, the support device includes a sidewalk cylinder that swings the leg in the column direction of the rail plate.
[0015]
The slope excavation method according to the present invention includes a step of positioning an endless chain formed by cascading a plurality of rails on the slope, and the endless chain in the column direction of each rail. A step of moving forward and pressing the retractable blade protruding from the tread surface of the rail plate against the slope, and a step of immersing the tiltable blade into the slope by lowering the endless chain. The endless chain body is moved back in the column direction of the rails, and the tilting blades fall down to a posture along the rails by a frictional force that the sliding blades are in sliding contact with the slope. A step of pressing a leveling blade protruding from the tread surface of the rail plate against the slope while allowing.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A slope excavator and excavation method according to an embodiment of the present invention will be described. In the following, detailed illustrations and explanations of endless chains, bolts, nuts, smooth joints, pumps for generating hydraulic pressure, hydraulic piping, hydraulic control devices, and well-known machine elements are simplified. To do.
[0017]
As shown in FIGS. 1 and 2, a slope excavator 1 according to the present embodiment includes an endless caterpillar 3 in which a plurality of rails 2 are connected to each other in a pin connection, and the caterpillar 3 is connected to each rail. 2, a drive source 4 that moves forward or backward in the column direction, an excavation blade 6 that protrudes from the tread surface 5 of each track 2, and a support device 7 that positions the caterpillar 3 at a desired height.
[0018]
The forward or backward direction of the caterpillar 3 is indicated by arrows A and B in the drawing. Hereinafter, a direction orthogonal to these arrows A and B and along the tread surface 5 of the caterpillar 3 is defined as a width direction.
[0019]
The caterpillar 3 is an example of an endless chain. Specifically, the caterpillar 3 is a diversion of a caterpillar unit constituting a tractor of a construction machine such as a Yumbo or a bulldozer. The caterpillar unit is provided with a drive chain 40 having a drive source 4 that is a hydraulic motor provided at one end of the support 30 and a driven chain 41 at the other end of the support 30. A caterpillar 3 is wound around a driven chain wheel 41, and a guide roller 31 for guiding the caterpillar 3 in the horizontal direction is provided at an appropriate position of the support 30.
[0020]
The excavating blade 6 is preferably a blade extending across the column direction of the rail plate 2. The blade is a concept including an earthwork plate or a soil discharge plate in addition to a blade-shaped blade exclusively for cutting. Moreover, as shown in FIGS. 3 and 4, excavation blades 6 having different roles from each other may be provided in combination on each rail plate 2. That is, the tiltable blade 8 that is pin-joined to the rail plate 2 via the hinge portion 20, the stopper 21 provided on the tiltable blade 8 or the rail plate 2, and the tiltable blade 8 are pressed by pressing in the direction of arrow a. A biasing means 10 that biases the blade 8 so as to protrude from the tread surface 5 of the rail plate 2 is combined with a leveling blade 9 that is fixed to the rail plate 2 and has a projecting dimension from the tread surface 5 shorter than that of the retractable blade 8. .
[0021]
The hinge portion 20 is configured by penetrating a fixed piece 23 fixed along the tread surface 5 of the rail plate 2 and a root portion of the tiltable blade 8 with a hinge pin 22. The tiltable blade 8 can swing (turn) in the directions of arrows a and b with the hinge pin 22 as a support shaft. A plurality of notches 80 are formed on the tip of the retractable blade 8 in order to reduce reaction force during excavation. Arrows a and b indicate the locus of the blade edge when the retractable blade 8 swings. These are directions along arrows A and B. The fixed piece 23 is detachably fastened to the rail plate 2 with a bolt or the like so that the replacement can be easily performed when the tiltable blade 8 is damaged. The leveling blade 9 is a rectangular steel plate welded to the rail plate 2, and the cutting edges are aligned straight.
[0022]
The stopper 21 may be provided on either the rail plate 2 or the root portion of the tiltable blade 8, and the tiltable blade 8 to swing in the direction of the arrow a is desired to be orthogonal to or from the tread surface 5 of the rail plate 2. What is necessary is just to be able to position in the attitude | position which protrudes with the inclination angle of. The urging means 10 is a coil spring fitted into the hinge portion 20 in a state where the hinge pin 22 is inserted. One end 12 of the urging means 10 presses the retractable blade 8 toward the stopper 21, and the other end (not shown) of the urging means 10 that receives this reaction force is the fixed piece 23 or the tread surface 5 of the rail 2. You are hitting.
[0023]
As shown in FIGS. 1 and 5, the support device 7 includes a main frame 70 that supports the caterpillar 3 with the tread surface 5 of the rail plate 2 facing downward, and a slide 71 at a position facing the width direction of the main frame 70. And a plurality of legs 73 extending downward from the tread 5, and the plurality of legs 73 are swung in a direction crossing the longitudinal direction of the railing plate 2 with the slide 71 as a fulcrum. Accordingly, a cylinder 74 that moves the lower ends of the plurality of legs 73 up and down relative to the main frame 70 is provided.
[0024]
The main frame 70 is a frame-shaped steel or H-shaped steel frame, and the support 30 of the caterpillar unit is welded to the lower part thereof. The leg body 73 is mainly composed of a steel frame or the like, and has two arm portions 75 projecting from the upper end and the inner side of the upper end, respectively, and a slide 71 is provided at a portion where these two arm portions 75 are abutted. The grounding portion 72 is provided with a flange on the inner side of the sharpened lower end of the leg body 73, and the leg body in a state in which the lower end of the leg body 73 is stuck to the slope 11 to an appropriate depth by the flange. 73 is further restricted from entering the slope 11.
[0025]
The cylinder 74 is a hydraulic or pneumatic cylinder, and its rear end is pin-connected to the main frame 70 via the slide 76, while the tip of the operating rod 77 is connected to the upper end of the leg 73 via the slide 78. Pin connected to When the cylinder 74 is extended, the caterpillar 3 rises with respect to the ground contact portion 72 of the leg 73. When the cylinder 74 is shortened, the caterpillar 3 descends with respect to the ground contact portion 72 of the leg 73.
[0026]
1 and 5 show four legs 73. These are connected by two connecting members 79, and two connecting members 79 are pin-connected to two cylinders 74, respectively. The two cylinders 74 are arranged so as to cross each other so as to fit within the width dimension of the main frame 70.
[0027]
The slope 11 is excavated according to the following procedure. First, the slope excavator 1 is lifted by a yumbo or a crane. Further, the cylinder 74 is appropriately expanded and contracted to swing the leg 73 so that the tread surface 5 of the caterpillar 3 and the ground contact portion 72 of the leg 73 are adjusted to have substantially the same height. The slope excavator 1 is landed on the slope 11 by operating a yumbo or a crane. In this state, the lower end of each leg 73 may slightly pierce the slope 11, and the tread 5 of the caterpillar 3 may contact the slope 11 or slightly lift from the slope 11.
[0028]
At this time, it is desirable that the slope excavator 1 directs the arrow A direction in which the caterpillar 3 moves forward to the lower side (the valley side) of the slope 11. Here, “below the slope 11” is not limited to the attitude of the caterpillar 3 along the direction in which the slope 11 is inclined, but in the direction of arrow A with respect to the direction in which the slope 11 is inclined. It also means that the caterpillar 3 is arranged so that.
[0029]
Further, when the slope excavator 1 lands on the slope 11, the caterpillar 3 may be rolled regardless of the inclination angle of the slope 11. Rolling in this case means that the posture of the caterpillar 3 is changed in the width direction by changing the expansion / contraction amounts of the two cylinders 74 that respectively swing the leg bodies 73 provided at the opposing positions in the width direction of the main frame 70. The entire caterpillar 3 is slightly inclined or rotated on the slope 11 so as to be inclined.
[0030]
Further, the expansion / contraction amount of the two cylinders 74 may be set as appropriate so that the tread surface 5 of the caterpillar 3 is horizontal. The ground posture of the caterpillar 3 can be confirmed by a level attached to the support 30 or the main frame 70 regardless of the slope of the slope 11.
[0031]
As described above, by appropriately adjusting the height position of the tread surface 5 of the caterpillar 3 and the attitude of the caterpillar 3, the retractable blade 8 protruding from the tread surface 5 of the rail plate 2 toward the normal surface 11 becomes the normal surface 11. The caterpillar 3 is positioned so as to bite. Then, the drive source 4 is activated to move the caterpillar 3 in the direction indicated by the arrow A. Thereby, the retractable blade 8 excavates the surface of the slope 11.
[0032]
At the same time, since the reaction force of excavation is applied to the tiltable blade 8 in the direction of arrow a, the tiltable blade 8 is strongly pressed against the stopper 21. The earth and sand on the slope 11 excavated by the tiltable blade 8 naturally falls according to the slope of the slope 11. Further, when the caterpillar 3 is lowered with respect to the ground contact portion 72 by shortening the cylinder 74, the retractable blade 8 is immersed in the slope 11 and the slope 11 is dug deeper. The drive source 4 is stopped after the slope 11 is roughly cut by the tiltable blade 8.
[0033]
Next, the drive source 4 is reversed to move the caterpillar 3 back in the direction indicated by the arrow B. Due to the frictional force between the slope 11 and the tiltable blade 8 at this time, the tiltable blade 8 falls in the direction of the arrow b against the elastic force of the urging means 10, and takes a posture substantially along the tread surface 5. For this reason, the leveling blade 9 protrudes from the tread surface 5 rather than the retractable blade 8. The slope 11 can be leveled by the leveling blade 9 as described above. The driving source 4 is stopped after the slope 11 is leveled, and the slope excavator 1 is lifted again with a yumbo or a crane. The above process is repeated to excavate a wide area.
[0034]
The pump for supplying hydraulic pressure to the drive source 4 and the cylinder 74 and the hydraulic control device described above are provided outside the slope excavator 1. The hydraulic control device includes an operation panel that controls driving and stopping of the driving source 4 and expansion and contraction of the cylinder 74. Since the operation of the operation panel can be performed outside the slope excavator 1, it is not necessary for an operator or the like to board the slope excavator 1. Thereby, unmanning of leveling work is achieved.
[0035]
In addition, although the specific Example was described so far about embodiment which concerns on this invention, this invention is not limited to these. For example, as shown in FIG. 6, the rear end of the body portion of the cylinder 74 and the front end of the operating rod 77 may be pin-connected to a sliding joint 78 at a position opposite to each other. Thus, in the above description, the four legs 73 are swung by the two cylinders 74. However, since this is covered by the one cylinder 74, the number of parts can be reduced and the cost can be reduced.
[0036]
In the above description, only the caterpillar 3 is illustrated as the endless chain body. However, instead of the caterpillar 3, an endless link chain or link belt may be applied, and the excavation blade 6 may be attached thereto.
[0037]
As shown in FIG. 7, a cylinder 74 that stands upright and extends the operating rod 77 downward may be provided at a position opposite to the main frame 70, and the leg 73 may be directly connected to the operating rod 77. Thereby, the structure of the slope excavator 1 is further simplified. Even when the leg 73 is grounded, the caterpillar 3 can be smoothly raised and lowered without the swing of the leg 73 as described above.
[0038]
As shown in FIG. 8, the excavation blade 6 may be a fine blade 60 narrower than the width dimension of the rail plate 2. A plurality of fine blades 60 may be provided on the rail plate 2. Furthermore, you may arrange | position another thin blade 61 in the position corresponding to the clearance gap between thin blades 60 in zigzag form. In FIG. 3, the retractable blade 8 and the leveling blade 9 are arranged on the left side and the right side, respectively, but these arrangements may be reversed with respect to the rail plate 2. Moreover, although the illustrated leg body 73 is four, you may provide five or more. The slope excavator 1 has a configuration suitable for excavating the slope 11, but can also be used for excavating horizontal land.
[0039]
In the above description, when the slope excavator 1 is moved, it is described that the slope excavator 1 is lifted by a yumbo or a crane. However, as shown in FIG. 9, the slope excavator 1 is supported so that it can autonomously walk. The device 7 may be configured. In the following, in order to distinguish the arrangement of the constituent elements, lowercase letters are appended as necessary after the reference numerals.
[0040]
Specifically, the support device 7 is swung in the direction crossing the longitudinal direction of the rail plate 2 by four legs 73 provided at positions opposite to each other of the main frame 70 and the four legs 73. The cylinder 74 and the telescopic cylinder 13 that expands and contracts the leg lengths of the four leg bodies 73, respectively. These legs 73 are not connected to each other by the connecting member 79 described above, but are independent of each other.
[0041]
According to such a support device 7, all the four legs 73 are grounded when standing still without walking. In this state, all of the four legs 73 have the same posture as the legs 73a and 73b, so that the legs 73c and 73d actually overlap the legs 73a and 73b and do not appear in the figure. become.
[0042]
In order to start walking, first, the cylinder 13c is shortened so that the lower end 72c of the leg 73c is lifted from the slope 11, and the cylinder 74c is extended so that the leg 73c is supported by the smooth joint 71. Swing in the direction of arrow F. As a result, the leg 73c is in the state shown in the figure. On the other hand, by shortening the cylinder 13d, the lower end portion 72d of the leg body 73d is lifted from the slope 11, and by shortening the cylinder 74d, the leg body 73d is swung in the direction of arrow F with the smooth node 71 as a fulcrum. . As a result, the leg 73d is in the state shown in the figure. An arrow F direction is a direction crossing the column direction of the rails 2 and is a direction of walking by the support device 7. The opposite direction is indicated by an arrow R.
[0043]
Furthermore, the lower end part 72c of the leg 73c is pushed up to the slope 11 by extending the telescopic cylinder 13c. Then, by shortening the cylinder 13 a, the lower end portion 72 a of the leg body 73 a is lifted from the slope 11. From this state, if the leg 73a and the leg 73b are swung in synchronization with the arrow R direction, the caterpillar 3 together with the main frame 70 moves in the arrow F direction with respect to the slope 11.
[0044]
As the legs 73a and 73b swing, the center of gravity of the slope excavator 1 moves ahead of the legs 73b in the direction of arrow F. Therefore, by extending the cylinder 74d in synchronism with the legs 73a and 73b, the leg 73d is swung in the direction of the arrow R about the smooth node 71 as a fulcrum. At the same time, the telescopic cylinder 13d is also extended. Thereby, the slope excavator 1 is supported by the leg 73d. By repeating the above operations, the slope excavator 1 can walk on the slope 11.
[0045]
Further, as shown in FIG. 10, a lateral walking cylinder 14 that swings the legs 73 in the longitudinal direction of the rail 2 may be added to the support device 7. In this case, the smooth joint 15 is added in the middle of the leg 73, and the telescopic cylinder 13 can be swung in the vertical direction using the smooth joint 15 as a fulcrum. The sidewalk cylinder 14 is disposed across the smooth joint 15. That is, the body of the sidewalk cylinder 14 is pin-joined to the smooth joint 18, while the actuating rod 16 of the sidewalk cylinder 14 is connected to the leg body via the slide 17 that is offset with respect to the slide 15. 73 is pin-joined.
[0046]
By shortening the telescopic cylinder 13 shown in the figure, the lower end portion 72 of the leg body 73 is lifted from the slope 11 and the sidewalking cylinder 14 is shortened so that the lower end portion 72 of the leg body 73 is slipped. Swing node 15 around the fulcrum. Thereby, the leg body 73 is in a state represented by an imaginary line in FIG.
[0047]
From this state, by extending the telescopic cylinder 13 again, the lower end 72 of the leg 73 is pushed up to the slope 11 and the sidewalking cylinder 14 is extended again, so that the leg 73 is shown by a solid line in FIG. Return to the state indicated by. Along with the swing of the leg 73 and the displacement of the lower end portion 72, the caterpillar 3 together with the main frame 70 moves in the arrow S direction with respect to the slope 11.
[0048]
The above operation is not performed for all four legs 73 at the same time. When one leg 73 is in a state represented by a virtual line, the other leg 73 is represented by a solid line. Thus, the phases of the operation cycles of the individual legs 73 are made different. Although the caterpillar 3 is omitted in FIGS. 9 and 10, if the height is adjusted in advance so that the caterpillar 3 is close to the slope 11 when walking as described above, the grounding state of the leg 73 is determined. Even if the slope is unstable, the slope excavator 1 will not fall down.
[0049]
In addition, the present invention can be carried out in a mode in which various improvements, modifications, and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention can be implemented in a form in which any one of the invention-specific matters is replaced with another technique within a range where the same action or effect occurs. The invention specific matter configured integrally may be implemented by a form constituted by a plurality of elements, or the invention specific matter constituted by a plurality of elements may be implemented integrally.
[0050]
【The invention's effect】
According to the slope excavator and the method thereof according to the present invention, since the excavation blade protrudes from the tread on the endless chain rail driven by the drive source, the endless chain is pressed against the slope. Thus, the portion of the slope where the endless chain is pressed is excavated to a substantially uniform depth. In addition, since the support device for supporting the endless chain can freely set the height position on the slope of the endless chain, the depth at which the excavation blade digs the slope can be adjusted to a desired dimension. Therefore, all the conventional problems can be solved, and automation and labor saving of the leveling work by excavating the slope can be realized.
[0051]
Furthermore, according to the slope excavator according to the present invention, the blade extending across the longitudinal direction of the rail track is applied as the excavating blade, so that a relatively wide range having a width equal to the entire length of the excavating blade can be obtained at a time. Can drill. Therefore, there is an advantage that such leveling work can be performed efficiently when flattening a wide slope.
[0052]
Furthermore, according to the slope excavator according to the present invention, when the endless chain is moved forward by the drive source, the retractable blade is positioned in a posture protruding from the tread surface by the stopper. The slope can be excavated by pressing the against the slope. Further, since the tiltable blade is biased by the biasing means, the tiltable blade always protrudes from the tread surface of the gauge plate without receiving a reaction force when excavating the slope.
[0053]
Also, when the endless chain is moved back by the drive source, the tiltable blade falls to the tread surface, so that it does not function as an excavating blade, and the leveling blade flattens the slope. In the configuration as described above, if the retractable blade has a tooth profile suitable for excavation, rough cutting of the slope can be performed quickly and efficiently by moving the endless chain. If the leveling blade has a flat tooth profile suitable for leveling, the end face can be finished by returning the endless chain.
[0054]
Therefore, according to the slope excavator and the excavation method using the slope excavator, rough cutting of the slope and finishing of the slope can be continuously performed without exchanging excavation blades.
[0055]
Furthermore, according to the slope excavator according to the present invention, the main frame supporting the endless chain is provided with a plurality of legs at opposite positions, so that the lower end of the leg is grounded to the slope. In this state, when the lower end of the leg is lowered with respect to the main frame by expanding and contracting the cylinder, the endless chain rises with respect to the slope. On the contrary, when the lower end of the leg is raised with respect to the main frame, the endless chain is lowered with respect to the slope. Therefore, since the height position on the slope of the endless chain can be freely set, the depth at which the excavation blade digs the slope can be adjusted to a desired dimension.
[0056]
Further, according to the slope excavator according to the present invention, the plurality of legs are rotatably connected to the opposing positions of the main frame, so that the lower ends of the legs are grounded to the slope. When these legs are swung by expanding and contracting the cylinders in the state where the lower ends of the legs are moved, the lower ends of the legs move up and down with respect to the main frame. To rise. Therefore, the depth at which the excavation blade digs the slope can be adjusted to a desired dimension.
[0057]
In addition, when a hydraulic motor is applied as a drive source for driving the endless chain, for example, a hydraulic pressure generation pump that supplies hydraulic pressure to the hydraulic motor may be shared as a drive source for the cylinder. it can. That is, it is not necessary to install a dedicated incidental facility as a cylinder drive source at the construction site, and the labor at the construction site can be greatly reduced.
[0058]
Further, according to the slope excavator according to the present invention, since autonomous walking is possible, there is no need for an operator or the like to board, so that complete unmanning of the leveling work can be realized.
[Brief description of the drawings]
FIG. 1 is a front view of a slope excavator according to an embodiment of the present invention.
FIG. 2 is a side view of the main part of the slope excavator according to the embodiment of the present invention.
FIG. 3 is a perspective view showing the tread surface of an endless chain applied to the slope excavator according to the embodiment of the present invention upward.
FIG. 4 is a side view of an essential part of an endless chain applied to a slope excavator according to an embodiment of the present invention and a modification thereof.
FIG. 5 is a side view of a main part of a support device applied to a slope excavator according to an embodiment of the present invention.
FIG. 6 is a front view of a modified example of the slope excavator according to the embodiment of the present invention.
FIG. 7 is a front view of a further modification of the slope excavator according to the embodiment of the present invention.
FIG. 8 is a perspective view showing the tread surface of an endless chain body of a modification applied to the slope excavator according to the embodiment of the present invention upward.
FIG. 9 is a side view showing another embodiment of the supporting device applied to the slope excavator according to the embodiment of the present invention.
FIG. 10 is a front view showing a main part of still another embodiment of the support device applied to the slope excavator according to the embodiment of the present invention.
[Explanation of symbols]
1: Slope excavator 2: Rail track 3: Caterpillar (endless chain)
4: Driving source 5: Tread surface 6: Excavation blade 7: Support device 8: Falling blade 9: Leveling blade 10: Biasing means 11: Slope 13: Telescopic cylinder 14: Sidewalk cylinder 21: Stopper 73: Leg Body 74: cylinder

Claims (6)

An endless chain in which a plurality of rails are arranged in a row, a drive source for driving the endless chain in the column direction of the plurality of rails, a drilling blade protruding from the tread surface of the rails, and the endless A slope excavator comprising a support device for positioning a chain ,
The excavating blade is pinned to the tread surface of the rail plate, and a tiltable blade capable of swinging the blade tip in the longitudinal direction; biasing means for projecting the tiltable blade from the tread surface; and the tiltable blade as the tread surface And a stopper that allows the tiltable blade to fall on the tread against the urging means, and has a protruding dimension from the tread that is fixed to the rail plate than the tiltable blade. A slope excavator comprising a short leveling blade . The support device includes a main frame that supports the endless chain body in a posture in which the tread surface can be grounded, a plurality of legs provided at opposing positions of the main frame, and lower ends of the plurality of legs. The slope excavator according to claim 1 , further comprising a cylinder that moves up and down relative to the main frame. The support device supports the endless chain body in a posture in which the tread surface can be grounded, and an upper end is pin-coupled to a position opposite to the main frame so that the lower end is below the tread surface. A plurality of legs that extend, and a cylinder that moves the plurality of legs in a direction crossing the column direction of the rails to move the lower ends of the legs vertically relative to the main frame. The slope excavator according to claim 1 . It said support device, slope face excavation machine according to claim 3, further comprising a telescopic cylinder for stretching the leg before Symbol plurality of legs. The slope excavator according to claim 3 or 4 , wherein the support device includes a lateral walking cylinder that swings the leg in a column direction of the rail plate. A step of positioning an endless chain formed by cascading a plurality of rails on a slope; and
Forwardly moving the endless chain in the column direction of each rail, and pressing a tiltable blade protruding from the tread of the rail against the slope;
Lowering the endless chain to immerse the retractable blade into the slope; and
The endless chain body is moved back in the column direction of the rails, and the tilting blades fall down to a posture along the rails by a frictional force that the sliding blades are in sliding contact with the slope. Pressing the leveling blade protruding from the tread surface of the railing plate against the slope while allowing,
A slope excavation method characterized by comprising:

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