JPH0356163Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a ridge shaping device, and more particularly to a ridge shaping device that is mounted on an earthmoving vehicle and is effectively used as a working device for shaping ridges.

<Prior Art> As is well known to those skilled in the art, in field maintenance work, land is filled with soil and pressed (rolled) by an appropriate earthmoving vehicle such as a bulldozer, and is substantially semicircular or semielliptical in cross section. Ridge shaping is performed to shape the straight ridge soil (substrate) into a ridge with a substantially trapezoidal cross section. In such ridge shaping, an earthmoving vehicle equipped with a ridge shaping blade having a flat front surface as a working device at the front end is generally used to carry out the following ridge shaping method. That is, by positioning the earthmoving vehicle in a state perpendicular to the longitudinal direction of the ridge soil, and then moving the earthmoving vehicle forward and operating the ridge shaping blade,
Locally cutting the portion of the ridge-forming soil where the ridge-shaping blades are located facing each other, thus shaping a substantially horizontal ridge top surface and a ridge slope surface having an approximately 45-degree inclination; Thereafter, the earthmoving vehicle is positioned over the unshaped portion of the ridge soil adjacent to the portion where the ridge top surface and ridge slope surface have been shaped by cutting, and the same shaping operation is repeated.

However, as is easily understood, the above-mentioned ridge shaping method requires (a) cutting and shaping of the ridge top and slope surfaces locally and intermittently, which reduces work efficiency; (b) Considerable skill is required to operate the ridge shaping blade.

On the other hand, a ridge surface working machine with a working part protruding laterally from the center of the rear of a traveling work vehicle was developed by the Japanese Patent Laid-Open Publication No.
It is disclosed in Japanese Patent No. 54-97210. Due to its structure, this conventional technology mainly has the following problems to be solved.

(1) Since the construction is such that a long member is placed from the center of the rear of the traveling work vehicle to the side, and the working part is attached to the tip of the work vehicle, it is possible to automatically trace along the ridge that has already been shaped. is possible, but heavy cutting work on large ridges that requires a large load is impossible.

(2) Since the working section is located at the rear of the traveling work vehicle, it is extremely difficult for the operator to proceed with the work while checking the work status.

(3) Installation on a traveling work vehicle is complicated and cannot be easily attached or detached.

Furthermore, Japanese Utility Model Application Publication No. 54-37415 discloses a ridge cutting device having a cutting blade protruding from one side of a vehicle such as a tractor for scraping the ridge top layer or side surface layer. Due to its structure, this conventional technology also cannot cut the upper surface and slope of the ridge into a predetermined shape at the same time, and also cannot perform heavy cutting work on large ridges. I have issues.

<Purpose of the invention> This invention was made based on the above facts, and its main purpose is to easily and efficiently perform heavy cutting and compaction work on large ridges that are subject to large loads, and to make it easy for earthmoving vehicles to carry out heavy cutting and compaction work on large ridges. To provide a ridge shaping device that can be detachably attached to a ridge.

<Summary of the invention> According to the invention, the ridge shaping device is installed on an earthmoving vehicle, and includes a working blade supported at the front ends of a pair of push arms disposed on both sides of the earthmoving vehicle; is supported by one end of the working blade so as to be pivotable about a vertical axis extending in the vertical direction, and the rear end is provided between one end of the push arm and allows the pivoting. a first support frame supported by a first guide support means; and a first support frame provided between the working blade and the first support frame, the first support frame being centered around the longitudinal axis. a hydraulic cylinder mechanism for pivoting; a front end supported by the first support frame so as to be pivotable about a horizontal axis extending in the transverse direction; and a rear end supported by the first support frame; a second support frame supported by a second guide support means provided on the earthmoving vehicle and adapted to allow the turning; and a second support frame mounted on the second support frame laterally outward of the earthmoving vehicle. an inclined surface shaping blade having a cutting edge extending upwardly at a predetermined angle; an upper surface shaping blade having a cutting edge extending laterally to the upper surface shaping blade; and an indicator for displaying the position of the inclined surface shaping blade and the upper surface shaping blade; Vertical position adjustment means is provided for rotating the second support frame relative to the first support frame to a predetermined angular position about the horizontal axis, the inclined surface shaping blade and the upper surface shaping blade. A pressing shoe is attached to the back surface of the ridge for elastically pressing the ridge slope shaped by the slope shaping blade and the ridge upper surface shaped by the upper surface shaping blade, respectively. Provided is a ridge shaping device characterized by:

<Preferred Specific Example of the Invention> Hereinafter, with reference to the accompanying drawings illustrating a specific example of the ridge shaping device constructed according to the present invention,
This will be explained in more detail.

Referring to FIGS. 1 to 3, the ridge shaping device, which is generally designated by the number 2, has two push arms 4 (only one of which is shown in FIGS. 2 and 3) in the illustrated specific example. The bulldozer 8 (only a part of which is shown by the two-dot chain line) is equipped on one side of an earthmoving vehicle, which is equipped with a working blade 6 attached to the front end of the bulldozer (only a part of which is shown by the two-dot chain line). This ridge shaping device 2 includes a support body 10, a fluid pressure cylinder mechanism 12 (FIGS. 2 and 3), an inclined surface shaping blade 14, and an upper surface shaping blade 16.

The illustrated support 10 includes a first support frame 18 and a second support frame 20. The first support frame 18, which may be an elongated tubular body, includes:
The bulldozer 8 is mounted on one side of the bulldozer 8 so as to be pivotable about a vertical axis 22 extending in the vertical direction. To explain in detail how the first support frame 18 is attached, on the outer surface of the side plate 24 disposed at one end of the working blade 6 provided in the bulldozer 6,
A connecting bracket 26 is fixed. The connecting bracket 26 has a pair of protruding plate parts 28 arranged at intervals in the vertical direction, and a pin insertion hole is formed in each of the pair of protruding plate parts 28. On the other hand, the first support frame 18
A connecting boss 30 having a through hole extending in the vertical direction is fixed to the front end of the connecting boss 30 . The connecting boss 30 is connected to the pair of protruding plate portions 28 of the connecting bracket 26, as shown in FIGS. 1 and 3.
A pin insertion hole and a connecting boss 3 located between the pair of protruding plate portions 28 and formed in the pair of protruding plate portions 28
The connecting pin 32 (this connecting pin 32
(the central axis of which coincides with the longitudinal axis 22) is inserted, and the front end of the first support frame 18 is thus connected to the connection bracket 26 so as to be pivotable about the longitudinal axis 22. Furthermore, in the illustrated example, as shown in FIGS. 2 and 4, a pair of connecting plates 34 are fixed to the rear end of the first support frame 18 at intervals in the front-rear direction. , and a second
As shown in FIGS. 3 and 4, a guided channel 36 is provided. The guided channel 36 includes a base plate 38 fixed to the lower ends of the pair of connecting plates 34, a pair of side plates 40 depending from the front and rear edges of the base plate 38, and a pair of side plates 40, 40, and 40, respectively. plate 40
A pair of end plates 42 respectively fixed to the lower ends of the
As understood from FIG. 2, it extends in an arc shape centered on the vertical axis 22. On the other hand, as shown in FIGS. 3 and 4, a rail support 44 is detachably attached to one of the pair of push arms 4 of the bulldozer 8. A guide rail 46 extending in an arc shape centered on the vertical axis 22 is fixed to correspond to the guided channel 36 . The guided channel 36 then follows along the guide rail 46.
It is fitted onto the guide rail 46 so as to be able to smoothly move along an arc centered on the vertical axis 22 .

The guide rail 46 and the guided channel 36 constitute a first guide support means.

As shown in FIGS. 2 and 3, a connecting bracket 48 is fixed to the intermediate portion of the first support frame 18, and one end of the fluid pressure cylinder mechanism 12 is connected to this connecting bracket 48. pin 5
0. The other end of the hydraulic cylinder mechanism 12 is rotatably connected to a connecting bracket 51 fixed to the back surface of a blade 6 provided in the bulldozer 8 by a connecting pin 52. As described above, when the hydraulic cylinder mechanism 12 is extended, the first support frame 18 is pivoted about the vertical axis 22 in the direction shown by the arrow 54 in FIG. It will be apparent that upon retraction of 12, the first support frame 18 is pivoted about the longitudinal axis 22 in the direction indicated by arrow 56 in FIG.

The second support frame 20, which may be an elongated tubular body similar to the first support frame 18 described above, is arranged so that the rotation angle position of the second support frame 20 can be changed about a horizontal axis 58 extending in the transverse direction. is installed on. To explain in detail how the second support frame 20 is attached, a connection bracket 60 is fixed to the intermediate portion of the first support frame 18 and projects laterally outward therefrom. The connecting bracket 60 includes a pair of protruding plate portions 62 that are spaced apart from each other in the lateral direction.
Each of the pair of protruding plate portions 62 has a pin insertion hole formed therein. On the other hand, the second
A connecting boss 64 having a through hole extending laterally is fixed to the front end of the support frame 20 . As shown in FIGS. 1 and 2, the connecting boss 64 is positioned between the pair of protruding plate portions 62 of the connecting bracket 60, and is inserted into a pin insertion hole formed in the pair of protruding plate portions 62. A connecting pin 66 (the central axis of this connecting pin 66 coincides with the horizontal axis 58) is inserted into the through hole of the connecting boss 64, and thus the second support frame 20
A front end thereof is connected to a connecting bracket 60 so as to be pivotable about the horizontal axis 58. In addition, in the illustrated specific example, as shown in FIGS. 2, 3, and 4, the intermediate portion of the second support frame 20 is provided from the top and bottom surfaces of the second support frame 20. A pair of connecting plates 68 each protruding laterally inward is fixed, and the pair of connecting plates 68
A guided channel 70 is provided at the laterally inner end of. This guided channel 70 includes a base plate 72 fixed to the inner end of the pair of connecting plates 68 in the lateral direction, and a base plate 72 fixed to the inner end of the pair of connecting plates 68 in the lateral direction
2, and a pair of end plates 76 fixed to the inner ends of the pair of side plates 74 in the lateral direction. As understood from FIG. 3, it extends in an arc shape centered on the horizontal axis 58. On the other hand, the first support frame 1
A guide rail 78 extending in an arc shape centered on the horizontal axis 58 is fixed to the outer ends in the lateral direction of the pair of connecting plates 34 fixed to the rear end portions of the guide rails 78 corresponding to the guided channel 70. ing. The guided channel 70 is fitted onto the guide rail 78 so as to be slidable along the guide rail 78, that is, along an arc centered on the horizontal axis 58. The guide rail 78 and the guided channel 70 constitute a second guide support means. This second guide support means is further provided with a vertical position adjustment means, which will be described below. As clearly shown in FIGS. 2 and 4, a pair of support plates 80 that protrude inward in the lateral direction are fixed to the intermediate portion of the second support frame 20 (second
As clearly shown in the figure, a pair of support plates 8
0 is directly fixed to the second support frame 20, and the other of the pair of support plates 80 is fixed to one of the pair of end plates 76),
A boss member 82 is mounted between the pair of support plates 80 so as to be pivotable about an axis extending parallel to the horizontal axis 58. On the other hand,
One of the pair of connecting plates 34 (the one located at the rear) fixed to the rear end of the first support frame 18
A pair of support plates 84 that protrude rearward are fixed to the rear surface, and a nut member 86 having a threaded hole extending in the vertical direction is installed between the pair of support plates 84 on an axis extending parallel to the horizontal axis 58. It is mounted so that it can rotate freely around the center. A screw shaft 88 is attached to the boss 82 so that it cannot move vertically but is rotatable, and the lower end of the screw shaft 88 is screwed into the screw hole of the nut member 86. At the upper end of the screw shaft 88, a gripping portion 9 is provided.
A handle 92 with 0 is fixed. As described above, if the grip portion 90 of the handle 92 fixed to the upper end of the screw shaft 88 is gripped and the screw shaft 88 is rotated in a predetermined direction, the second support frame 20 will be moved in the horizontal direction. The screw shaft 8 is pivoted about the axis 58 in the direction shown by an arrow 94 in FIG.
8 in the opposite direction, the second support frame 20 is pivoted about the horizontal axis 58 in the direction indicated by the arrow 96 in FIG. 3, so that the handle 92 can be manually operated. Therefore, it is clear that the angular position of the second support frame 20 relative to the first support frame 18 about the horizontal axis 58 can be changed as appropriate.

As shown in FIGS. 1 and 2, a connecting plate 98 extending laterally outward and a connecting plate 100 extending downward are fixed to the rear end of the second support frame 20. The inclined surface shaping blade 14 is fixed to the connecting plates 98 and 100. As shown in FIGS. 1 and 5, this inclined surface shaping blade 14 is
It includes a front board 102 having a substantially arcuate cross section and a cutting edge 104 attached to the lower edge of the front board 102. The cutting edge 104 of the blade 14 for shaping an inclined surface has a first
As shown in the figure, at a predetermined angle with respect to the horizontal line,
It extends upwardly and laterally outwardly at a generally 45 degree angle.

The upper surface shaping blade 16 is attached to the inclined surface shaping blade 14, preferably along the cutting edge 104 of the inclined surface shaping blade 14, so that its position can be freely adjusted (this attachment method will be described later). ). Upper surface shaping blade 1
6 also includes a front board 106 having a substantially arcuate cross section and a cutting edge 108 attached to the lower edge of the front board 106, as shown in FIGS. 1 and 6. Upper surface shaping blade 1
The cutting edges 108 of 6 extend laterally in a substantially horizontal manner as shown in FIG.

To explain in detail how the upper surface shaping blade 16 is attached to the inclined surface shaping blade 14, in the illustrated example, FIG. 1, FIG. 2, and FIG.
As shown in the figure, a guide rail 1 extending substantially parallel to the cutting edge 104 is provided on the outer side of the upper edge of the slope shaping blade 14 in the lateral direction.
10 is fixed. As shown in FIG. 2, a plurality of holes 112 are formed in the upper surface of the guide rail 110 at appropriate intervals in the longitudinal direction. On the other hand, a guided body 116 having a guided channel 114 corresponding to the cross-sectional shape of the guide rail 110 is fixed to the inner upper end portion of the upper surface shaping blade 16 in the lateral direction. Furthermore, a pair of guided bodies 118 are fixed to the back surface of the upper surface shaping blade 16 at intervals in the longitudinal direction of the cutting edge 104 of the inclined surface shaping blade 14. A guided channel 120 is formed therein. The guided channel 114 formed in the guided body 116 of the upper surface shaping blade 16 is slidably fitted into the guide rail 110 fixed to the inclined surface shaping blade 14, and The guided channel 120 formed in the pair of guided bodies 118 is connected to the inclined surface shaping blade 1.
The upper surface shaping blade 16 is slidably fitted onto the cutting edge 104 of No. 4, and thus the upper surface shaping blade 16 is slidably attached to the inclined surface shaping blade 14 along the cutting edge 104. The guided body 116 fixed to the upper surface shaping blade 16 is further provided with a through screw hole 1 as shown in FIG.
22 is formed. A screw shaft 125 having a handle 124 at the upper end is screwed into the through screw hole 122. The tip of the screw shaft 125 is fitted into one of the plurality of holes 112 formed on the upper surface of the guide rail 110, and the upper surface shaping blade 16 is thus released from the inclined surface shaping blade 14. Locked freely. Therefore, the upper surface shaping blade 16 can be freely adjusted in position along its cutting edge 104 with respect to the inclined surface shaping blade 14. It will be apparent that the threaded hole 122 is selectively mounted in one of a plurality of positions that aligns with one of the plurality of holes 112 formed in the guide rail 110.

The back surface of the slope shaping blade 14 and the back surface of the upper surface shaping blade 16 are shown in FIGS. 2 and 5, respectively.
As shown in FIG. 6 and FIG.
and 127 are installed. Referring to FIGS. 2 and 5, the pressing shoe 126 attached to the back surface of the slope shaping blade 14 will be described. On the top,
A pair of rib plates 128 are fixed at each of two positions spaced apart from each other in the longitudinal direction with a slight space between them in the longitudinal direction. On the other hand, a connecting bracket 130 and a connecting plate 132 are fixed to the back surface of the slope shaping blade 14 at two positions spaced apart in the longitudinal direction. A front end portion of a pair of rib plates 128 is rotatably connected to each of the connecting plates 132 by a connecting pin 134, respectively. On the other hand, connection bracket 1
A through hole is formed in the upper wall 136 of each of the bolts 30, and the shaft portion of a bolt 138 is inserted into the through hole. The shaft portion of the bolt 138 is equipped with a compression spring 140, a washer 142, and a nut 144 in this order. Further, a connecting piece 146 is screwed onto the tip of the shaft portion of the bolt 138. The intermediate portion of the pair of rib plates 128 is rotatably connected to the lower end of the connecting piece 146 by a connecting pin 148. The compression spring 140, whose upper end abuts against the lower surface of the upper wall 136 of the connecting bracket 130 and whose lower end abuts against the washer 142, elastically biases the bolt 138 downward, thereby forcing the head of the bolt 138 against the upper wall of the connecting bracket 130. 13
6, thereby elastically biasing the pressing shoe 126 counterclockwise in FIG. 5 about the central axis of the connecting pin 134,
Pressure shoe 126 is resiliently maintained in the biased position shown. The elastic biasing force of the compression spring 140 can be adjusted as appropriate by operating the nut 144 and changing the position of the nut 144 and the washer 142 relative to the shaft of the bolt 138.
Further, the biased position of the pressing shoe 126 can be adjusted as appropriate by changing the degree of screw engagement of the connecting piece 146 with the tip of the shaft portion of the bolt 138 and changing the position of the connecting piece 146 with respect to the bolt 138. be able to. Pressing shoe 127 attached to the back of the upper surface shaping blade 16
It is also formed from an elongated curved plate having a substantially arcuate cross section. As can be easily understood by referring to FIG. 2 and comparing FIGS. 5 and 6, the manner in which the pressing shoe 127 is attached to the upper surface shaping blade 16 is different from that of the inclined surface shaping blade 14. This is substantially the same as the manner in which the pressing shoe 126 is attached, and therefore, to avoid duplication of explanation, the manner in which the pressing shoe 127 is attached to the upper surface shaping blade 16 will not be described.

The illustrated embodiment further includes an L-shaped support extending upwardly and then laterally outwardly from the upper end of the laterally outer end of the upper surface shaping blade 16, as shown in FIGS. 1 and 2. A pipe 150 is fixed. An indicator 152 is attached to this support pipe 150 so that its position in the lateral direction can be freely adjusted. More specifically, the indicator 152
A short pipe 154 is fixed to the pipe 1.
54 is slidably fitted on the laterally outwardly extending portion of the support pipe 150. A set screw 156 is attached to the pipe 154, and the set screw 156 allows the pipe 154 to be attached to the support pipe 1.
It is adjustable and fixed at the required position of 50.

Next, with reference mainly to FIG. 1, the effects of the ridge shaping device 2 as described above will be explained. As shown by the solid line and the two-dot chain line in FIG. 1, the ridge soil 1 has an approximately semicircular or semielliptical cross section and extends substantially straight in the direction perpendicular to the plane of the paper in FIG.
58 (substrate) into a ridge with a substantially trapezoidal cross section by the ridge shaping device 2 installed on the bulldozer 8, first, the grip part 90 of the handle 92 (see FIG. , FIGS. 3 and 4), the rotation angle position of the second support frame 20 about the horizontal axis 58 is adjusted, and thus the vertical position of the slope shaping blade 14 is adjusted as required. Generally, the lateral inner end of the cutting edge 104 of the slope shaping blade 14 is set so as to substantially match the lower end of the ridge soil 158 (ie, the base surface 160). Next, the handle 12
4 manually to adjust the position of the upper surface shaping blade 16 with respect to the inclined surface shaping blade 14,
In this way, the vertical position of the upper surface shaping blade 16 is set as required. After that, as shown in FIG. 1, the bulldozer 8 is positioned on one side of the ridge soil so as to be approximately parallel thereto, and the slope surface shaping blade 14 and the upper surface shaping blade 16 are used for ridge shaping. It is made to act on the earth and sand 158. Then, the bulldozer 8 is moved forward along the longitudinal direction of the ridge soil 158, that is, in a direction perpendicular to the plane of the paper in FIG. In this way, as can be easily understood from FIG. 1, the one side inclined surface 162 of the ridge is shaped by the cutting action of the inclined surface shaping blade 14, and the cutting action of the upper surface shaping blade 16 shapes the one side inclined surface 162 of the ridge. At least a portion (or the entirety) of the upper surface 164 of the ridge is shaped. Further, the pressing shoe 126 (second
and FIG. 5) is pressed and rolled with the required pressure, thus the inclined surface 162 is further flattened, and
A pressing shoe 127 (FIGS. 2 and 6) is pressed with a required pressure against the upper surface 164 of the ridge shaped by the upper surface shaping blade 16, thereby further flattening the upper surface 164.

When the bulldozer 8 is moved forward along the ridge soil 158, the slope shaping blade 14 and the upper surface shaping blade 16 act on the ridge soil 158 on one side of the bulldozer 8. Therefore, a so-called unbalanced load acts on one side of the bulldozer 8. Therefore, as the bulldozer 8 moves forward, it tends to curve in a direction that gradually approaches the ridge soil 158. In order to avoid the adverse effects of such a tendency, at the start of advancing the bulldozer 8 along the ridge soil 158, the hydraulic cylinder mechanism 12 (FIGS. 2 and 3) is fully extended and Then, the first support frame 18 is pivoted to the limit position in the direction shown by the arrow 54 in FIG. Place it in a prominent position. Then, as the bulldozer 8 moves forward, it curves and removes the ridge soil 158.
2, the hydraulic cylinder mechanism 12 is gradually retracted and the first support frame 18 is gradually pivoted in the direction indicated by the arrow 56 in FIG. 14 and the upper surface shaping blade 16 are gradually brought closer laterally inward to the bulldozer 8. Thus,
Even though the bulldozer 8 does not advance straight along the ridge earth and sand 158, the slope surface shaping blade 14 and the upper surface shaping blade 16 can be made to advance substantially straight along the ridge earth and sand 158. , therefore the slope 162 and top surface 164 of the ridge
can be straightened as required. Fluid pressure cylinder mechanism 12 when the bulldozer 8 moves forward
For example, the contraction of two or more poles 166 at intervals in the longitudinal direction of the ridge soil 158
(one of which is shown in FIG. 1) is planted, and the ridge soil 15
a guide line 168 extending substantially straight along 8;
By tensioning the guide line 168 (which constitutes a reference line) and monitoring the position of the indicator 152 with respect to such guide line 168, it can be easily controlled as desired.

The remaining sloped surface 170 of the ridge (and the remaining portion of the top surface 164, if any) is constructed by positioning the bulldozer 8 on the opposite side of the ridge soil 158;
Shaping can be done by moving the bulldozer 8 forward along the ridge soil 158.

On the other hand, ridge shaping is a part of field maintenance work.
The bulldozer 8 can also be used for various operations such as topsoil stripping, land leveling, embankment, pressing, and backfilling below ridge shaping in field maintenance work. In such a case, the second support frame 20 may be removed by manually operating the grip portion 90 (FIGS. 2, 3, and 4) of the handle 92.
is rotated in the direction shown by arrow 96 in FIG. 3, and the inclined surface shaping blade 14 and the upper surface shaping blade 16 are positioned vertically above the position shown in FIG. 1. In this way, when the bulldozer 8 performs work other than ridge shaping, inconveniences such as the lateral inner end of the cutting edge 104 of the slope shaping blade 14 interfering with the base surface 160 can be avoided. I can do it.

Although one specific example of the ridge shaping device constructed according to the present invention has been described above in detail with reference to the accompanying drawings, the present invention is not limited to such specific example and departs from the scope of the present invention. It goes without saying that various modifications and modifications can be made without having to do so.

<Effects of the invention> According to the invention described above, the following effects can be obtained.

(1) When the load during ridge shaping is small, an earthmoving vehicle, such as a bulldozer, can move straight and shape a straight ridge.

However, if the load becomes large, even if the bulldozer is heavy and has good stability, the direction of movement will be bent toward the ridge, and the ridge that has been shaped will become crooked.

In such a case, in the present invention, the first support frame is rotated around the vertical axis using the fluid pressure cylinder mechanism, so that the inclined surface shaping blade and the upper surface shaping blade can be freely moved in one direction of the bulldozer. As a result, the bulldozer can be pulled closer to the shaping device, and the bulldozer can be kept moving straight. Therefore, heavy cutting of large ridges can be performed continuously and with high efficiency.

In particular, a strong triangular structure is formed by the first support frame, the working blade, and the hydraulic cylinder mechanism, and the strong structure of the earthmoving vehicle, including the working blade, is utilized. hand,
Due to the fact that a shaping device is attached,
Can withstand strong loads.

Therefore, as mentioned above, it has sufficient strength to withstand heavy cutting work that generates extremely high loads, making it possible to carry out stable work.

(2) Since the vertical positions of the slope shaping blade and the top surface shaping blade can be freely adjusted as desired in advance, the slope and top surface of the ridge can be cut simultaneously into a predetermined shape.
Work efficiency has been significantly improved.

(3) There is no space between the earthmoving vehicle body and the working blade.
As is well known, since a lift cylinder is provided, this can be used to move the ridge shaping device up and down, and the tilt function of the lift cylinder can also be used to adjust the slope of the slope shaping blade and the top surface shaping blade. You can also adjust the angle. Therefore, the functions of the earthmoving vehicle body can be effectively used, and there is almost no need for an additional device to the earthmoving vehicle body for the ridge shaping device, and it can be put to practical use extremely easily and at low cost.

(4) The ridge shaping device is located on one side of the earthmoving vehicle,
Moreover, since it is placed closer to the front, the operator can proceed with the shaping work while checking the work status using the indicator. Therefore, it has become possible to perform the work easily, reliably, and safely.

(5) The ridge shaping device is attached to one side of the earthmoving vehicle by attaching the hydraulic cylinder mechanism to the working blade, and the working blade, which is the attaching part to the front end of the first support frame. There are three points: a vertical axis line at one end, and an attachment section between the first guide support means and the push arm, which is an attachment section at the rear end of the first support frame.

That is, since the ridge shaping device can be attached to one side of the earthmoving vehicle using these three points, it is extremely easy to attach and detach it to the earthmoving vehicle with only minimal modification.

Therefore, an earthmoving vehicle can be used as a ridge shaping machine by attaching the ridge shaping device, and can be used for its original work by removing the ridge shaping device. Since these can be used very easily and at low cost, their practical value is extremely high.

(6) On the back of each blade, there is a pressure shoe that elastically presses the top surface of the ridge that has been shaped (cut). Both are performed continuously, resulting in extremely high work efficiency.

(7) When the pressing force of the pressing shoe is adjustable, it is possible to arbitrarily apply a finish suitable for the soil quality and condition of the ridge.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a specific example of a ridge shaping device constructed according to the present invention and installed on a bulldozer. FIG. 2 is a plan view of the ridge shaping device shown in FIG. 1. FIG. 3 is a side view showing a part of the ridge shaping device shown in FIG. 1. FIG. 4 is a partial sectional view showing the structure of the rear end of the first support frame and the intermediate part of the second support frame. FIG. 5 is a partial view showing a part of the blade for shaping an inclined surface and a part of the blade for shaping an upper surface. FIG. 6 is a partial view showing the upper surface shaping blade. 2... Ridge shaping device, 8... Bulldozer (earthmoving vehicle), 10... Support body, 12... Fluid pressure cylinder mechanism, 14... Blade for slope shaping, 16...
...Top surface shaping blade, 18...First support frame, 20...Second support frame, 22...Vertical axis,
58... Horizontal axis line, 126 and 127... Pressure shoe, 168... Guide line (reference line).

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A ridge shaping device installed on an earthmoving vehicle, which comprises: a working blade supported at the front ends of a pair of push arms disposed on both sides of the earthmoving vehicle; , a first member supported by one end of the working blade so as to be pivotable about a vertical axis extending in the vertical direction, the rear end of which is provided between one end of the push arm and which allows the pivoting; a first support frame supported by a guide support means; and a first support frame provided between the working blade and the first support frame, for rotating the first support frame about the longitudinal axis. a hydraulic cylinder mechanism, the front end of which is rotatably supported by the first support frame about a horizontal axis extending laterally, and the rear end of which is provided between the first support frame and the first support frame; a second support frame supported by second guide support means such as to allow the pivoting of the earthmoving vehicle; an inclined surface shaping blade having a cutting edge extending at a predetermined angle toward the inclined surface; an upper surface shaping blade having a cutting edge extending in the direction; and an indicator for displaying the positions of the inclined surface shaping blade and the upper surface shaping blade; vertical position adjustment means is provided for rotating the second support frame to a predetermined angular position about the horizontal axis with respect to the support frame; are each equipped with a pressing shoe that elastically presses the ridge slope surface shaped by the slope surface shaping blade and the ridge top surface shaped by the top surface shaping blade. A ridge shaping device featuring: . 2. The ridge shaping device according to claim 1, wherein the pressing force of each of the pressing shoes on the ridge inclined surface and the ridge upper surface is adjustable.