JP2001032318A - Work vehicle bucket and work vehicle equipped with the bucket - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a work vehicle bucket provided with a spill guard that ensures visibility of an edge tip portion during running of a vehicle and has less spillage. A point X1 is defined as a point where a straight line connecting the point P1 and a set eye point in the cab intersects a spill guard 12 with respect to a point P1 provided on the edge tip of an edge 9.
The straight line L0 passing through the point X1 and the upper end 12u of the spill guard 12
X6 and X5 are the intersections with the side end 12s, and X7 and X11 are the perpendicular legs lowered from the point X1 to the upper end 12u and the side end 12s of the spill guard 12, and the point between X6 and X7 and the point X1 are The upper end of the spill guard 12 was cut out along a cut line formed by a connecting straight line L1 and a straight line L2 connecting the point between X5 and X11 and the point X1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle bucket and a work vehicle provided with a spill guard, which are used for construction machines and the like.

[0002]

2. Description of the Related Art When a work vehicle such as a wheel loader having a bucket is run, the work vehicle is run with a bucket provided at a front portion of the vehicle tilted to a predetermined height from the ground. When the bucket is tilted in this manner, the tip of the edge attached to the bottom surface of the bucket is located at the forefront of the vehicle. Therefore, visibility of the edge tip portion (particularly, both end portions of the edge tip) from the driver is an important issue in vehicle handling.

[0003] By the way, at the rear upper end of the bucket,
A plate member called a spill guard is provided to prevent the load from spilling to the rear of the bucket. When the bucket is tilted, the tip of the edge is blocked by the spill guard and may not be seen by the driver. For this reason, there are some spill guards in which the upper end portions of both ends are cut out to ensure the visibility of both end portions of the edge tip.

[0004]

However, the relationship between the visibility and the spillage described above is contradictory. To ensure sufficient visibility, the notch of the spill guard may be enlarged, but on the other hand, the notch When the value is increased, a problem that the load is easily spilled occurs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work vehicle bucket provided with a spill guard which ensures the visibility of the edge tip portion during running of the vehicle and has less spillage, and a work vehicle provided with the bucket. .

[0006]

An embodiment of the present invention will be described with reference to FIGS. 1, 5 and 10. FIG. (1) Explaining in connection with FIG. 1 and FIG. 10, the invention of claim 1 includes a spill guard 12 for preventing a spill,
A straight line that includes an edge 9 provided at the front end of the bucket bottom surface and that connects a reference viewpoint 15 set in the driver's cab of the work vehicle with a point P1 at a predetermined distance W from the end in the vehicle width direction on the front end of the edge. A point at which E1 intersects with the spill guard 12 is defined as a first point X1, which is applied to a work vehicle bucket in which the upper end of the spill guard 12 is cut out so as to pass through the first point X1, and passes through the first point X1. Spill guard 12
A point where the upper straight line L0 intersects the upper end 12u and the side end 12s of the spill guard 12 is defined as a second point X6 and a third point X3, respectively.
The upper end of the spill guard 12 is defined as a fourth point X7 and a fifth point X11, respectively, where a perpendicular foot lowered from the first point X1 to the upper end 12u and the side end 12s of the spill guard 12 is defined as a point X5. To the first line L1 connecting the point on the upper end of the spill guard between the second point X6 and the fourth point X7 to the first point X1, and the third point X5 to the fifth line
A first cutout line, a first line L1, and a first line L2 connecting a point on the spill guard side end 12s between the first point X1 and the first point X1. Point X
A second cutout line formed by a third line L2 connecting the first and third points X5, a fourth line L1 connecting the first point X1 and the second point X6, and a second The above-mentioned object is achieved by notching by any of the third notch lines constituted by the line L2. (2) The invention according to claim 2 is the work vehicle bucket according to claim 1, wherein the first line L1 and a vertical line lowered from the first point X1 to the upper end 12u of the spill guard, and the cut surrounded by the upper end 12u of the spill guard. The first line L1 is set so that the area of the notched region B is 70% or less of the area of the triangle having the first point X1, the second point X6, and the fourth point X7 as vertices. . (3) Explaining in connection with FIG. 4 and FIG. 10, the invention of claim 3 includes a spill guard 12 for preventing spillage of a load,
A straight line that includes an edge 9 provided at the front end of the bucket bottom surface and that connects a reference viewpoint 15 set in the driver's cab of the work vehicle with a point P1 at a predetermined distance W from the end in the vehicle width direction on the front end of the edge. A point at which E1 intersects with the spill guard 12 is defined as a first point X1, which is applied to a work vehicle bucket in which the upper end of the spill guard 12 is cut out so as to pass through the first point X1, and passes through the first point X1. Spill guard 12
A point where the upper straight line L0 intersects the upper end 12u and the side end 12s of the spill guard 12 is defined as a second point X6 and a third point X3, respectively.
The upper end of the spill guard 12 is defined as a fourth point X7 and a fifth point X11, respectively, where a perpendicular foot lowered from the first point X1 to the upper end 12u and the side end 12s of the spill guard 12 is defined as a point X5. A point on the upper end of the spill guard between the second point X6 and the fourth point X7, a first point X1, and a spill guard side end between the third point X5 and the fifth point X11. A first notch curve passing through a point on 12s, a point on the upper end of the spill guard between a second point X6 and a fourth point X7, a first point X1 and a third point X5
, A second notch curve passing through the second point X6, a first point X1, and a third point passing through a point on the spill guard side end 12s between the third point X5 and the fifth point X11. The above-mentioned object is achieved by notching by any of the notch curves. (4) Explaining in connection with FIG. 5 and FIG. 10, the invention of claim 4 includes a spill guard 12 for preventing spillage,
A straight line that includes an edge 9 provided at the front end of the bucket bottom surface and that connects a reference viewpoint 15 set in the driver's cab of the work vehicle with a point P1 at a predetermined distance W from the end in the vehicle width direction on the front end of the edge. Is applied to a work vehicle bucket in which the upper end of the spill guard 12 is cut out so as to pass through the first point X1, and the spill guard passes through the first point X1. 12 is the upper end 12u and side end 1 of the spill guard 12.
The points that intersect with 2s are defined as a second point X6 and a third point X5, respectively.
The perpendicular feet lowered to 2u and the side end 12s are referred to as a fourth point X7 and a fifth point X11, respectively, and a point on the edge side end and having a predetermined width dimension h from the edge tip is referred to as a sixth point P3.
And a straight line E connecting the sixth point P3 and the reference viewpoint 15
Assuming that a point at which 3 intersects the spill guard 12 is a seventh point X3, the curve passes through the first point X1 and the seventh point X3 and has a constant curvature. The above-mentioned object is achieved by notching the spill guard 12 along the fourth notch curve L50. (5) In connection with FIGS. 1 and 10, the invention of claim 5 is directed to a bucket 4 having a spill guard 12 for preventing spillage and an edge 9 provided at the tip of the bottom surface.
And a point at which a straight line E1 connecting the reference viewpoint 15 set in the driver's cab and a point P1 at a predetermined distance W from the vehicle width direction end on the edge tip crosses the spill guard 12 is defined as a first point X1. A straight line L on the spill guard 12 passing through the first point X1 is applied to a work vehicle in which the upper end of the spill guard 12 is cut so as to pass through the first point X1.
The points where 0 intersects the upper end 12u and the side end 12s of the spill guard 12 are defined as a second point X6 and a third point X5, respectively, and the leg of the perpendicular line lowered from the first point X1 to the upper end 12u and the side end 12s of the spill guard 12. Are the fourth point X7 and the fifth point X11, respectively, and the upper end of the spill guard 12 is connected to the point on the upper end of the spill guard between the second point X6 and the fourth point X7 by the first point. A first line L1 connecting the point X1 to the third point X5 and a fifth point X11
The first notch line, the first line L1, and the first point X1 and the second line L2 connecting the point on the spill guard side end between the first point X1 and the first point X1. Point X of 3
5, a second cutout line formed by a third line L2 connecting the first point X1, a fourth line L1 connecting the first point X1 and the second point X6, and a second line L2. The above-mentioned object is achieved by notching by any of the third notching lines. (6) In the work vehicle according to the fifth aspect, in the work vehicle according to the fifth aspect, a cutout area surrounded by the first line L1, a vertical line lowered from the first point X1 to the upper end 12u of the spill guard, and the upper end 12u of the spill guard. The first line L1 is set so that the area of B is 70% or less of the area of the triangle having the first point X1, the second point X6, and the fourth point X7 as vertices. (7) In connection with FIGS. 4 and 10, the invention of claim 7 is directed to a bucket 4 having a spill guard 12 for preventing spillage and an edge 9 provided at the tip of the bottom surface.
And a point at which a straight line E1 connecting the reference viewpoint 15 set in the driver's cab and a point P1 at a predetermined distance W from the vehicle width direction end on the edge tip crosses the spill guard 12 is defined as a first point X1. A straight line L on the spill guard 12 passing through the first point X1 is applied to a work vehicle in which the upper end of the spill guard 12 is cut so as to pass through the first point X1.
The points where 0 intersects the upper end 12u and the side end 12s of the spill guard 12 are defined as a second point X6 and a third point X5, respectively, and the leg of the perpendicular line lowered from the first point X1 to the upper end 12u and the side end 12s of the spill guard 12. Are the fourth point X7 and the fifth point X11, respectively, the upper end of the spill guard 12 is defined as a point on the upper end of the spill guard between the second point X6 and the fourth point X7, And a first notch curve passing through a point on the spill guard side end 12s between the third point X5 and the fifth point X11, and the second point X6 and the fourth point X7. A second point passing through a point on the upper end of the spill guard in between, a first point X1 and a third point X5.
A third notch curve passing through the second point X6, the first point X1, and a point on the spill guard side end 12s between the third point X5 and the fifth point X11, The above-mentioned object is achieved by notching by either of the above. (8) In connection with FIGS. 5 and 10, the invention of claim 8 is directed to a bucket 4 having a spill guard 12 for preventing spillage and an edge 9 provided at the front end of the bottom surface.
And a first point X1 is a point at which a straight line connecting the reference viewpoint 15 set in the driver's cab and a point P1 at a predetermined distance W from the vehicle width direction end on the edge tip crosses the spill guard 12; The straight line L0 on the spill guard 12 passing through the first point X1 is applied to a work vehicle in which the upper end of the spill guard 12 is cut out so as to pass through the first point X1.
Are the second point X6 and the third point X5, respectively, where the intersection with the upper end 12u and the side end 12s of the spill guard 12 is made, and a perpendicular foot lowered from the first point X1 to the upper end 12u and the side end 12s of the spill guard 12 is set. A fourth point X7 and a fifth point X11, respectively, a point on the edge side edge and having a predetermined width dimension h from the edge tip is defined as a sixth point P3,
Assuming that a point at which a straight line E3 connecting the sixth point P3 and the reference viewpoint 15 intersects the spill guard 12 is a seventh point X3, it has a certain curvature through the first point X1 and the seventh point X3. The above-described object is achieved by notching the spill guard 12 along a fourth cutout curve L50 that is a curve and that is concave toward the upper end of the spill guard 12.

[0007] In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments of the present invention are used to make the present invention easy to understand. However, the present invention is not limited to the embodiment.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 7 is a side view of the wheel loader, showing a running posture when the wheel loader is run. The vehicle is composed of a traveling body 1 and a working machine 2 mounted on a front portion thereof and used for excavation work and the like, and travels by a traveling device 1b provided on the traveling body 1. 1a is a cab provided on the traveling body 1, and 15 is a cab 1
It is an eye point set in a. The set eye point 15 is a reference value of the driver's eye point, and is set at a predetermined position when designing the vehicle. When driving a vehicle,
The bucket 4 is tilted at a predetermined height from the ground so that the bucket 4 of the work implement 2 is in a posture for holding a load.

FIG. 8 is a view showing the working machine 2,
The lift arm 3 attached to is driven up and down by expansion and contraction of a lift arm cylinder 7. The bucket 4 is rotatably attached to the tip of the lift arm 3 via a bucket hinge 14. The bucket 4 is connected to the bucket 4 via a link 6 and a bell crank 5.
The bucket 4 is driven to rotate about the bucket hinge 14 by the expansion and contraction of the bucket cylinder 8. The posture of the lift arm 3 and the bucket 4 (for example,
The control of the posture (as shown in FIG. 7) is performed by adjusting the expansion and contraction of the lift arm cylinder 7 and the bucket cylinder 8.

An edge 9 is welded and fixed to the front edge of the bottom surface of the bucket 4, and a retrofitting edge 11 is attached to the edge 9 by a bolt 10. The retrofitted edge 11 can be installed or removed depending on the working conditions. A spill guard 12 for preventing spillage of a load is provided at a rear upper end portion of the bucket 4. Reference numeral 13 denotes a side plate provided on the side surface of the bucket 4, and in FIG. 8, a part of the side plate is broken so that the tips of the edges 9 and 11 can be seen. FIG. 9 is a view of the bucket 4 viewed obliquely from the front. When the running posture of FIG. 7 is taken, a portion surrounded by a dashed line of the spill guard 12 becomes an obstacle, and the edge from the set eye point 15 in the cab 1a to the edge. Both ends of 9 and 11 cannot be visually recognized. In the present embodiment, the spill guard 1
By improving the shape of this part of No. 2, the visibility of the edges 9 and 11 is improved while preventing the spillage from this part.

FIG. 10 is a diagram for explaining the relationship between the set eye point 15, the edges 9, 11 and the spill guard 12 when the bucket 4 is tilted.
(B) is a side view. W represents the visible range of the edges 9 and 11 determined at the time of design, and points P1 and P2 represent the intersections between the respective ends of the edges 9 and 11 and the boundary of the visible range W. In addition, a point P3 on the left end of the edge 9 indicates a position of a dimension h from the tip P1 of the edge 9. E1 to E3 are straight lines connecting the points P1 to P3 and the set eye point 15, respectively. The points X1, X2 and X3 are straight lines E1, E2 and E, respectively.
3 and the spill guard 12. Points X1, X2
The distance of X3 from the left side of the bucket is W1, W, respectively.
2, W3, and the distances from the upper end of the spill guard 12 are H1, H2, and H3, respectively.

Incidentally, as described above, the edge 11 is a retrofit edge, and is provided or removed according to the working conditions. Therefore, in the present embodiment, the spill guard 12 is cut out under the minimum condition that “the tip of the welding edge 9 within the visible range W can be visually recognized”. That is, H1 from the upper end of the spill guard 12 and W from the side end.
A point X1 at a distance of 1 is a point through which a notch line must pass in order to secure the visible range of the edge 9. Although the left side of the bucket 4 is shown here, the right side of the bucket has a symmetrical positional relationship with that of FIG. Therefore, only the visibility of the left end of the bucket will be described below.

FIG. 11 shows the spill guard 12 and the points P1 to P3 when the upper end of the spill guard 12 is not cut off.
10A and 10B are diagrams illustrating the relationship between the spill guard 12 and points X1 to X3, wherein FIG. 10A is a diagram viewed from the set eye point 15 (FIG. 10), and FIG. FIG.
As shown in FIG. 1A, the edges 9 and 11 are blocked by the spill guard 12 and cannot be seen from the set eye point 15. Therefore, conventionally, as shown in FIG. 12, the upper ends 120a of the spill guard 120 are notched in a triangular shape to ensure visibility.

FIG. 13A shows a bucket 4 shown in FIG.
Is a view of the spill guard 120 viewed from the rear of the vehicle, and FIG. In addition,
In FIG. 13A, the point X1 on the spill guard 120 and the point P1 on the edge 9 appear to overlap. FIG. 13 shows the spill guard 120 cut away so that the visible range W at the tip of the edge 9 can be visually recognized.
X6 is the intersection of the straight line L0 passing through the points X1 and X5 and the upper end 120u of the spill guard 120. Also,
W6 is the distance from the side end 120s of the spill guard 120 to the point X6. As described above, when the upper end portions 120a of the spill guard 120 are cut off in a triangular shape, the end of the edge 9 is cut out to a region (represented by A) that is not related to the visibility, and the load from this portion is reduced. Spills will occur.

In the present embodiment, visibility is reduced and load spillage is reduced by cutting out the spill guard 12 along the straight lines L1 and L2 as shown in FIG. In FIG. 1, X7 is a perpendicular foot lowered from the point X1 to the upper end 12u of the spill guard 12, and X11 is a perpendicular foot lowered from the point X1 to the side end 12s of the spill guard 12. X12 is a point that internally divides the point X7 and the point X6 into 7 to 3. The points X5 and X6 correspond to the point X in FIG.
5 and X6, which are the same point. In FIG. 1A, the point P1 on the edge 9 and the point X1 on the spill guard 12 appear to overlap. The straight line L1 is a straight line connecting an arbitrary point between the points X7 and X12 of the upper end 12u of the spill guard and the point X1, while the straight line L2 is a point X1 between the arbitrary point between the points X5 and X11 of the spill guard side end 12s. Is a straight line connecting When the straight line L1 is set in this manner, the area of the cut-out region B becomes 70% or less of the area of the region A shown in FIG.

The spill guard 12 shown in FIG.
It shows how to cut out when the tip of the edge 9 within the viewing range W is set as a portion to be viewed. When the spill guard 12 is cut out along the straight lines L1 and L2 in this manner, the set eye point 15 in the cab 1a (FIG. 7)
, The tip of the edge 9 within the viewing range W can be completely visually recognized. Further, the area of the area B is 7 times the area of the area A.
By setting it to be 0% or less, it is possible to reduce the load spillage to the rear side of the bucket 4 as compared with the conventional case.
In FIG. 1, L1 and L2 are straight lines, but may be broken lines or curved lines. Hereinafter, specific examples of the shapes of L1 and L2 will be described.

[Specific Example 1] FIGS. 2A and 2B are views showing a first example of a cutout formed in the spill guard 12, and FIGS. 2A and 2B respectively show FIGS. 11A and 11B described above. It is the figure seen from the same direction as. In FIG. 2A, a point P1 on the edge 9 and a point P2 on the edge 11
Appear to overlap points X1 and X2 on spill guard 12, respectively. Spill guard 12 is straight line L11, L1
2 and L2, and the straight line L1 in FIG. 1 is a broken line formed by the straight lines L11 and L12. X
Reference numeral 8 denotes a perpendicular leg lowered from the point X2 to the upper end 12u of the spill guard 12, and a straight line L11 is a straight line connecting the points X8 and X2. On the other hand, the straight line L12 is a point X2 and a point X1.
Is a straight line connecting

As described with reference to FIG. 10, the point X2 is a point at which the straight line E2 connecting the set eye point 15 and the point P2 at the tip of the edge 11 intersects the spill guard 12.
As shown in FIG. 2A, in addition to the tip of the edge 9 included in the viewing range W, all the edges 11 in the viewing range W can be viewed from the set eye point 15. In addition, the area of the region C on the right side of the notched portion from the point X1 is considerably smaller than the area of the region A in FIG.

FIG. 3 is a view showing a second example of a notch formed in the spill guard 12. FIGS. 3A and 3B are the same as FIGS. 2A and 2B, respectively. It is the figure seen from the direction of. In FIG. 3A, the points P1, P3 on the edge 9 and the point P2 on the edge 11 appear to overlap with the points X1, X2, X3 on the spill guard 12, respectively. As shown in FIG. 3A, a point P3 represents a position of a dimension h from the edge tip at the left end 9s of the edge 9, and the left end 9s of the edge 9 is a point P3 from the edge tip.
Notches were set so that they could be visually recognized. Straight line L1
Spill guard 1 notched along 1, L12, L30
2 is the same as that of FIG. 2 described above, except that the straight line L2 (FIG. 2) and the straight line L30 are different. Since the point X10 at which the straight line L30 passing through the points X1 and X3 intersects with the side end 12s of the spill guard 12 is located above the point X5 at which the upper end of the side plate 13 intersects with the spill guard 12, the spill guard shown in FIG. 12 can reduce spillage. The shape on the right side of the point X1 is the same as that of the spill guard 12 in FIG. 2 and has the same effect.

FIG. 4 is a view showing a third example of a notch formed in the spill guard 12. FIGS. 4A and 4B are the same as FIGS. 2A and 2B, respectively. It is the figure seen from the direction of. In FIG. 4A, the point P1 on the edge 9 appears to overlap with the point X1 on the spill guard 12. Here, it passes through the points X1 and X5 and
The spill guard 12 is cut out along a curve L40 passing below the point X2 in the figure. Curve L40 is the spill guard 12
Is set so that the intersection X9 with the upper end 12u is located on the left side of the point X6 in the figure. Therefore, the distance W9 from the side end 12s of the spill guard 12 to the point X9 is smaller than W6 in FIG. In the example shown in FIG. 4, the curve L40 is a curve having a constant curvature.

Also in this case, the leading end of the edge 9 and the edge 11 included in the visible range W are set to the set eye point 15.
Can be completely visually recognized from. Further, the area of the cut-out region D is smaller than the area of the region A in FIG. Further, since the curve L40 is a curve having a constant curvature, the appearance is not deteriorated as compared with the case where the curve L40 is cut out along the broken line shown in FIGS.

FIG. 5 is a view showing a fourth example of a notch formed in the spill guard 12, and is a view of the spill guard 12 as viewed from the rear side of the vehicle. In the spill guard 12 shown in FIG. 4 described above, a notch is formed along a curve L40 passing through the points X1 and X5, but here, a notch is formed along a curve L50 having a certain curvature passing through the points X1 and X3. . At this time, the curve L50 is set such that the intersection of the curve L50 and the upper end 12u of the spill guard 12 is on the left side of the point X6 in the figure. Even in this case, the left end 9s (see FIG. 3) of the edge 9 can be visually recognized by the dimension h similarly to the spill guard 12 shown in FIG.

In the above-described embodiment, a wheel loader has been described as an example. However, the present invention is not limited to the wheel loader, but may be applied to a work vehicle having a similar bucket.

[0024]

FIG. 6 is an example showing specific dimensions of the notch formed in the spill guard 12, and the unit of the dimension is (mm).
It is. As a precondition, the width dimension of the bucket 4 is 20
00 (mm), the position of the set eye point 15 is edge 1
The height is set to 4000 (mm) behind the center of the front end and 2500 (mm) from the ground. W = 1
00, W1 = 200 (mm), and W2 = 320 (mm).

In the correspondence between the embodiment described above and the elements of the claims, the straight line L0 is a reference straight line, the set eye point 15 is a reference viewpoint, the point X1 is a first point,
Point X6 is the second point, point X5 is the third point, point X7 is the fourth point, point X11 is the fifth point, point P3 is the sixth point, and point X3 is the seventh point. , The straight line L1 forms the first and fourth lines, the straight line L2 forms the second and third lines, and the curve L50 forms the fourth cutout curve.

[0026]

As described above, according to the present invention,
The predetermined range of the edge tip and the edge side edge can be reliably visually recognized, and the spillage of the load from the bucket can be reduced. Further, by setting the notch curves as in the inventions of claims 3, 4, 7, and 8, it is possible to prevent the external shape of the spill guard from being impaired.

[Brief description of the drawings]

1A and 1B are diagrams illustrating a bucket according to an embodiment, wherein FIG. 1A is a diagram illustrating a bucket viewed from a set eye point;
(B) is the figure which looked at the spill guard 12 from the vehicle rear side.

FIGS. 2A and 2B are diagrams showing a first example of a notch formed in a spill guard 12, wherein FIG. 2A is a view of a bucket viewed from a set eye point, and FIG. 2B is a view of the spill guard 12 viewed from a vehicle rear side. .

3A and 3B are diagrams illustrating a second example of a notch formed in the spill guard 12, in which FIG. 3A is a view of a bucket from a set eye point, and FIG. 3B is a view of the spill guard 12 from a vehicle rear side. .

4A and 4B are diagrams illustrating a third example of a notch formed in the spill guard 12, wherein FIG. 4A is a view of a bucket viewed from a set eye point, and FIG. 4B is a view of the spill guard 12 viewed from a vehicle rear side. .

FIG. 5 is a view showing a fourth example of a notch formed in the spill guard 12, and is a view of the spill guard 12 viewed from a vehicle rear side.

FIG. 6 is a diagram showing an embodiment.

FIG. 7 is a side view of the wheel loader, showing a traveling posture when the wheel loader travels.

FIG. 8 is a view showing a work machine 2.

FIG. 9 is a view of the bucket 4 as viewed obliquely from the front.

FIGS. 10A and 10B are diagrams illustrating a relationship among a set eye point 15, edges 9, 11 and a spill guard 12 during running of the vehicle, wherein FIG. 10A is a plan view and FIG.

FIG. 11 shows the spill guard 12, the points P1 to P3, and the point X when the upper end of the spill guard 12 is not notched.
It is a figure which shows the relationship with 1-X3, (a) is the figure seen from the set eye point 15, (b) is the figure which looked at the spill guard 12 from the vehicle rear side.

FIG. 12 is a view showing a spill guard of a conventional bucket.

FIG. 13 is a view for explaining the spill guard of FIG. 12,
(A) is a view of the bucket viewed from the set eye point,
(B) is the figure which looked at the spill guard from the vehicle back.

[Explanation of Signs] 1 Running body 2 Work machine 4 Bucket 9, 11 Edge 12, 120 Spill guard 13 Side plate 15 Setting eye point

Claims (8)

[Claims] 1. A spill guard for preventing spillage, an edge provided at a front end of a bucket bottom surface, and a reference viewpoint set in a driver's cab of a work vehicle and a vehicle width direction side end on an edge front end. A first point is a point at which a straight line connecting a point at a predetermined distance from the spill guard intersects with the spill guard, and the upper end of the spill guard is cut off so as to pass through the first point. The point at which the straight line on the spill guard passing through the point
And a third point, and when a perpendicular foot lowered from the first point to the upper end and a side end of the spill guard is a fourth point and a fifth point, respectively, the upper end of the spill guard A first line connecting the point on the upper end of the spill guard between the second point and the fourth point to the first point, and a line between the third point and the fifth point. A first notch line, a second line connecting the point on the spill guard side end of the first point and the first point, the first line, and the first and third points. A second notch line constituted by a third line connecting the first point, a fourth line connecting the first point and the second point, and a third notch constituted by the second line. A bucket for a working vehicle, wherein the bucket is cut off by any one of lines. 2. The work vehicle bucket according to claim 1, wherein the area of the cutout area surrounded by the first line, a perpendicular drawn down from the first point to the upper end of the spill guard, and the upper end of the spill guard is A bucket for a work vehicle, wherein the first line is set so as to be 70% or less of an area of a triangle having the first point, the second point, and the fourth point as vertices. 3. A spill guard for preventing a load from spilling, an edge provided at the tip of the bottom face of the bucket, and a reference viewpoint set at the driver's cab of the work vehicle and a lateral end on the tip of the edge. A first point is a point at which a straight line connecting a point at a predetermined distance from the spill guard intersects with the spill guard, and the upper end of the spill guard is cut off so as to pass through the first point. The point at which the straight line on the spill guard passing through the point
And a third point, and when a perpendicular foot lowered from the first point to the upper end and a side end of the spill guard is a fourth point and a fifth point, respectively, the upper end of the spill guard A point on the upper end of the spill guard between the second point and the fourth point, a point on the spill guard side between the first point, and the third point and the fifth point. A first notch curve passing through a point; a point on the upper end of the spill guard between the second point and the fourth point; a second point passing through the first point and the third point.
Any one of the second notch curve, the second point, the first point, and a third notch curve passing through a point on the spill guard side end between the third point and the fifth point. A work vehicle bucket characterized in that the bucket is cut out. 4. A spill guard for preventing spillage, an edge provided at a tip of a bottom face of a bucket, and a reference viewpoint set in a driver's cab of a work vehicle and a lateral end on a tip of the edge. A first point is a point at which a straight line connecting a point at a predetermined distance from the spill guard intersects with the spill guard, and the upper end of the spill guard is cut off so as to pass through the first point. The point at which the straight line on the spill guard passing through the point
Points and a third point, and perpendicular feet dropped from the first point to the upper end and the side end of the spill guard are set as a fourth point and a fifth point, respectively. A point having a predetermined width is defined as a sixth point, and the sixth point
A curve passing through the first point and the seventh point and having a constant curvature, wherein a point at which a straight line connecting the point and the reference viewpoint intersects the spill guard is a seventh point. A buckle for a work vehicle, wherein the spill guard is cut out along a fourth cut-out curve having a concave shape toward the upper end of the spill guard. 5. A spill guard for preventing a spill and a bucket having an edge provided at a bottom end portion,
A first point is a point at which a straight line connecting a reference viewpoint set in the driver's cab and a point at a predetermined distance from the vehicle width direction end on the edge tip crosses the spill guard, and passes through the first point. As described above, in the work vehicle in which the upper end of the spill guard is notched, a point where a straight line on the spill guard passing through the first point intersects with the upper end and the side end of the spill guard is a second point.
And a third point, and when a perpendicular foot lowered from the first point to the upper end and a side end of the spill guard is a fourth point and a fifth point, respectively, the upper end of the spill guard A first line connecting the point on the upper end of the spill guard between the second point and the fourth point to the first point, and a line between the third point and the fifth point. A first notch line, a second line connecting the point on the spill guard side end of the first point and the first point, the first line, and the first and third points. A second notch line constituted by a third line connecting the first point, a fourth line connecting the first point and the second point, and a third notch constituted by the second line. A working vehicle characterized by being cut off by any of a line. 6. The work vehicle according to claim 5, wherein the area of the cutout area surrounded by the first line, a perpendicular drawn down from the first point to the upper end of the spill guard, and the upper end of the spill guard is A work vehicle, wherein the first line is set so as to be 70% or less of the area of a triangle having the first point, the second point, and the fourth point as vertices. 7. A spill guard for preventing a spill and a bucket having an edge provided at a bottom end portion,
A first point is a point at which a straight line connecting a reference viewpoint set in the driver's cab and a point at a predetermined distance from the vehicle width direction end on the edge tip crosses the spill guard, and passes through the first point. As described above, in the work vehicle in which the upper end of the spill guard is notched, a point where a straight line on the spill guard passing through the first point intersects with the upper end and the side end of the spill guard is a second point.
And a third point, and when a perpendicular foot lowered from the first point to the upper end and a side end of the spill guard is a fourth point and a fifth point, respectively, the upper end of the spill guard A point on the upper end of the spill guard between the second point and the fourth point, a point on the spill guard side between the first point, and the third point and the fifth point. A first notch curve passing through a point; a point on the upper end of the spill guard between the second point and the fourth point; a second point passing through the first point and the third point.
Any one of the second notch curve, the second point, the first point, and a third notch curve passing through a point on the spill guard side end between the third point and the fifth point. A work vehicle characterized by being cut out by a sword. 8. A spill guard for preventing spillage and a bucket having an edge provided at a front end of the bottom surface,
A first point is a point at which a straight line connecting a reference viewpoint set in the driver's cab and a point at a predetermined distance from the vehicle width direction end on the edge tip crosses the spill guard, and passes through the first point. As described above, in the work vehicle in which the upper end of the spill guard is notched, a point where a straight line on the spill guard passing through the first point intersects with the upper end and the side end of the spill guard is a second point.
Points and a third point, and perpendicular feet dropped from the first point to the upper end and the side end of the spill guard are set as a fourth point and a fifth point, respectively. A point having a predetermined width is defined as a sixth point, and the sixth point
A curve passing through the first point and the seventh point and having a constant curvature, wherein a point at which a straight line connecting the point and the reference viewpoint intersects the spill guard is a seventh point. A work vehicle, wherein the spill guard is cut off along a fourth cut-out curve that is concave toward the upper end of the spill guard.