JP2002038513A - Bucket for slope-land formation work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket for slope-land formation works, which also has excellent durability as well as a plurality of works for land-forming the face of a slope can be efficiently conducted by one bucket. SOLUTION: The bucket for slope-land formation works has a push plate 10, which is formed in an oblong and flat shape, in which a reinforcing lateral rib 13 along the longitudinal direction of the push plate is fixed on the rear side and which has a front-side excavation blade 11 and a rear-side excavation blade 12a at front-rear end sections respectively, the first bosom section 20 and the second bosom section 30, in which openings are directed back to back in the longitudinal direction and which are constituted on the rear side of the push plate 10, and a mounting bracket 40 fixed to the second bosom section 30 for mounting and demounting to and from a boom for a hydraulic backhoe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope construction work bucket which is attached to the tip of a boom of a hydraulic shovel and is used for excavation work, compaction work, and the like for forming a slope. is there.

[0002]

2. Description of the Related Art There have been proposed various types of conventional slope construction buckets having a wide width in order to efficiently excavate or construct a wide slope. By the way, there are various working modes such as shaving a slope on which a slope is formed from below, and conversely, shaving the slope from above, or compacting the slope. is there.

In order to perform various operations with one bucket as described above, it is necessary to consider durability against loads from several directions. In particular, a bucket for slope creation work has a long lateral width as described above, so that it tends to bend in the lateral width direction, and it is necessary to take measures to solve problems such as deformation and breakage of the bucket due to the warp.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a purpose thereof is to efficiently perform a plurality of operations for forming a slope by one bucket. It is another object of the present invention to provide a slope preparation work bucket which can be manufactured and has excellent durability.

[0005]

As a technical means of the present invention for solving the above-mentioned problems, a first aspect of the present invention is to fix a laterally long and flat reinforcing rib on the back side thereof along the longitudinal direction thereof. A push plate having a front excavation blade and a rear excavation blade at the front and rear ends, respectively, and a first pocket and a second pocket formed on the back side of the push plate with the opening turned back and forth in the front-rear direction. It is characterized by comprising a pocket and a mounting bracket fixed to the second pocket to be attached to and detached from a boom of a hydraulic shovel.

According to a second aspect of the present invention, the first pocket and the second pocket are formed by fixing a front curved plate and a rear curved plate, whose concave curved surfaces are opposite to each other, to the back surface of the push plate. The left and right openings of both curved plates are closed by side plates, respectively. Reinforced vertical ribs are fixed to the concave curved surface of the front curved plate along the vertical direction thereof, and the concave curved surface of the rear curved plate. , The mounting bracket is fixed along the vertical direction, and the two curved plates are fixed to the upper ends thereof with the horizontally long reinforcing members.

[0007] Further, a third aspect of the present invention is that a portion of the side plate on the front cutting edge side and / or the rear cutting edge side includes:
A protection plate having a shape conforming to the portion is stacked and fixed, and a front end side of the protection plate protrudes beyond an end of the side plate.

According to a fourth aspect of the present invention, the mounting bracket has two substantially parallel bearing portions detachably attached to the end of the boom of the hydraulic shovel, and these two bearing portions include a virtual axis including their axes. The plane is 40 to 55 with respect to the pressing plate.
It is characterized by being arranged at an angle of °.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an example of a slope creation work bucket according to the present invention.

[0010] The bucket A for the slope preparation work includes a push plate 10
A first pocket 20 and a second pocket 30 whose openings are opposed to each other in the front-rear direction on the upper surface side of the push plate 10, and a mounting bracket 40 fixed to the second pocket 30. The mounting bracket 40 is attached to the end of the boom of the hydraulic excavator, and is used for a slope forming operation.

The push plate 10 has a horizontally long rectangular shape and a flat shape, and is formed by welding a front excavating blade 11 to the front end side of the push plate main body 12.

The push plate main body 12 is formed of a horizontally elongated rectangular flat metal plate, and a rear excavation blade 12a having a gradually thinner shape is formed on the rear end side toward the rear end. Further, on the back surface (upper surface) of the push plate main body 12, a laterally long reinforcing transverse rib 13 is welded along the longitudinal direction substantially at the center between the front and rear, and the reinforcing horizontal rib 13 is attached to the push plate main body. 12 is prevented from bending in the lateral direction (see FIGS. 3 and 6).

The front excavating blade 11 is a long piece integrally welded along the front end side of the pressing plate main body 12, and is gradually thinned toward the front end, and the end is flat. By doing so, it is formed so as to prevent wear and chipping. The front excavation blade 11 of the present embodiment shows an example of a particularly preferable shape. Specifically, as shown in FIG. 7, the tip angle α is set to 35 °, and the dimension of the tip flat surface in the thickness direction is set. H is set to 4 mm. In addition, it is preferable that the rear excavation blade 12a of the above-described push plate main body 12 is also set to the tip angle α and the dimension H.

As the material of the front excavating blade 11, a steel material having excellent wear resistance and toughness is used so as to withstand excavation work on a slope.
In the present embodiment, Maxtemp (trade name), which is a bucket edge for a slope of KBL Corporation (manufacturer and distributor), is used.

In the illustrated example, the push plate main body 12 and the front digging blade 11 as a separate member are welded only to the front end side of the push plate 10, thereby improving the durability of the front side, which is frequently used. Although improved, the rear excavation blade 12a of the push plate main body 12 may be replaced with the above-described mode of welding the excavation blade made of the Maxtemp.

The first pocket portion 20 and the second pocket portion 30 fix the front curved plate 21 and the rear curved plate 31 having the concave curved surfaces 21a, 31a opposite to each other on the back (upper surface) of the push plate 10. At the same time, the left and right openings of the curved plates 21 and 31 are closed by side plates 53 and 53, respectively.

The front curved plate 21 is formed by bending a substantially rectangular steel plate into an arcuate longitudinal section, and has a concave curved surface 21a.
The lower end side is welded to the upper surface of the push plate 10 in a state where it is directed slightly forward. And this front curved plate 2
The first concave curved surface 21a extends along its vertical direction,
Two reinforcing vertical ribs 22 are welded symmetrically.

The reinforcing longitudinal rib 22 is a flat plate member having a substantially arcuate shape in plan view, and its convex rear end portion is entirely brought into contact with and welded to the concave curved surface 21 a of the front curved plate 21. This prevents the front curved plate 21 from bending in the vertical direction.

The rear curved plate 31 is formed by bending a substantially rectangular steel plate into a vertical cross-section in the same manner as the front curved plate 21, and the concave curved surface 31a is directed rearward and slightly upward. The lower end side is welded to the upper surface of the pressing plate 10, and the front curved plate 21 and the rear surface of the convex curved surface are brought into contact with each other.

The two curved plates 21 and 31 are prevented from bending in the longitudinal direction (lateral direction) by welding a horizontally long reinforcing member 51 to the upper ends thereof. . The horizontally elongated reinforcing member 51 is a channel-shaped member which is formed in a substantially U-shape in vertical cross section, and which is elongated in the longitudinal direction (lateral direction) of the curved plates 21 and 31, and has an opening side. The upper and lower ends of the rear curved plate 31 are welded to the upper end side of the rear surface of the front curved plate 21, and the lower curved surface in that state is welded to the upper end side of the rear curved plate 31.

The concave curved surface 31a of the rear curved plate 31 has
Two mounting brackets 40, 40 are welded along the vertical direction and symmetrically. The mounting bracket 40 has a flat curved mounting plate 41 having a front end formed along the concave curved surface 31a of the rear curved plate 31 and the rear surface of the horizontally long reinforcing member 51 continuous with the concave curved surface 31a. A first bearing portion 42 and a second bearing portion 43 are disposed and fixed obliquely on the upper side of 41.

The front end of the mounting plate 41 is entirely welded from the concave curved surface 31a of the rear curved plate 31 to the rear surface of the horizontally long reinforcing member 51, whereby the vertical direction of the rear curved plate 31 is increased. And the bending of the upper end side of the front curved plate 21 are prevented.

The first bearing portion 42 and the second bearing portion 43
Are provided substantially parallel to each other, and as shown in FIG. 5, the angle β between the imaginary plane including the axes thereof and the lower surface of the pressing plate 10 is 4
It is arranged so that it becomes 0-55 degrees. This range of the angle β is a particularly preferable range in order to improve the detachability of the hydraulic excavator from the boom tip and the usability of the slope creation work bucket A.

A flat reinforcing bracket 52 is welded to each of two intersections between the mounting bracket 40 and the front curved plate 21. The reinforcing bracket 52 prevents the bending of the front curved plate 21 in the longitudinal direction, and also prevents the load due to the bending from concentrating on the crossing portion and causing breakage or the like near the crossing portion.

The side plate 53 is welded so as to close the left and right openings of the two curved plates 21 and 31, respectively, so that the first pocket 20 and the second pocket 30 each have a bag shape. A protection plate 54 is stacked and welded to the side surface of the side plate 53 on the side of the front excavation blade 11.

The protection plate 54 has a shape similar to the portion of the side plate 53 on the side of the front excavation blade 11, is welded to the side plate 53, and has its front end slightly protruding from the front end of the side plate 53. . The protective plate 54 has a double-layered structure on the side of the front excavating blade 11 in the side plate 53 that is particularly susceptible to wear and chipping during a slope excavation operation, so that the region does not deform or chip. In addition, since the front end portion is slightly protruded forward from the above-described portion, the excavation work abuts against the earth and sand before the side plate 53 to reduce the impact on the side plate 53. It is preferable to use a steel material having excellent wear resistance as a material of the protection plate 54.

Thus, as shown in FIG. 8, the slope-creating work bucket A having the above-described configuration is configured such that the first pocket 20 is directed toward the hydraulic excavator (rightward in FIG. 8). Attached to the end of the boom of the shovel and selectively using the surface of the first pocket 20 or the second pocket 30 and the surface of the push plate 10 to perform excavation, compaction, scraping of earth and sand, etc. Used for At this time, the reinforcing horizontal ribs 13
In addition, since the important points that are likely to be bent are reinforced by the reinforcing vertical ribs 22, the horizontally long reinforcing members 51, and the like, they are not easily deformed or damaged by loads received from a plurality of directions. In addition, since the front end side of the side plate 53 is reinforced by the protective plate 54, it does not easily wear, deform, or be damaged.

In the illustrated example, the first pocket 20 which is frequently used has a larger internal capacity than the second pocket 30. However, both pockets may be used in accordance with the type of use. 2
The internal capacities of 0 and 30 may be the same, or the internal capacities of the second pocket 30 may be larger than the first pocket 20.

The protection plate 54 is provided so as to protect the front excavation blade 11 side of the side plate 53 on the front side where the frequency of use is particularly high. It may be provided on both sides of the front excavation blade 11 side and the rear excavation blade 12a side of the side plate 53. The protection plate 54 is provided outside the side plate 53 in the illustrated example, but may be provided inside.

[0030]

Since the present invention is configured as described above, it has the following effects. (Claim 1) Since there are pockets on both the front side and the rear side,
Efficient work can be performed by selectively using any of the front and rear pockets. In other words, by using the first pocket when shaving the slope on which the slope is formed from below, or by using the second pocket when shaving the slope from above, the front and rear of the bucket are reversed. Work can be performed efficiently without performing a rotating operation. In addition, since the pressing plate is horizontally long and flat, the pressing surface can be used to compact the slope to a flat shape, and to scrape off the soil at the rear end of the pressing plate. Therefore, a plurality of operations for excavating and creating a slope can be efficiently performed by effectively using the three directions of the push plate side, the front side, and the rear side. Moreover, since the lateral bending is prevented by the reinforcing horizontal rib fixed to the push plate, deformation or breakage due to the bending is unlikely to occur, and the width of the push plate is set to be long, and the lateral width is set. It is possible to work efficiently according to a wide slope. (Claim 2) Further, by fixing the reinforcing vertical ribs and the mounting brackets to the front curved plate and the rear curved plate constituting both pockets, bending in the vertical direction can be prevented.
By providing the horizontally long reinforcing member, the bending in the horizontal direction can be more reliably prevented. Therefore, even if a load is applied from any of the three directions of the pressing plate side, the front side, and the rear side, bending in the vertical and horizontal directions, deformation and breakage due to the bending hardly occur, and durability is further improved. . (Claim 3) In addition, the protection plate having a simple structure reinforces a portion of the side plate that is particularly susceptible to wear and chipping, such as the front digging blade side and / or the rear digging blade side, and can further improve durability. (Claim 4) Moreover, by setting the angles of the two bearing portions of the mounting bracket, it is possible to improve the detachability of the excavator from the boom tip and the operability in operation.

[Brief description of the drawings]

FIG. 1 is a front perspective view showing an example of a slope creation work bucket according to the present invention.

FIG. 2 is a rear side perspective view of the slope creation work bucket.

FIG. 3 is a front view showing the bucket for slope preparation work.

FIG. 4 is a rear view showing the slope creation work bucket.

FIG. 5 is a side view showing the bucket for slope preparation work.

FIG. 6 is a sectional view taken along line (6)-(6) in FIG. 3;

FIG. 7 is a longitudinal sectional view showing a main part of a front excavation blade.

8 (a) and 8 (b) show a use state diagram of the slope creation work bucket, wherein FIG. 8 (a) is an operation of shaving a slope on which a slope is formed from below, and FIG. An operation of shaving down from above, (c) an operation of compacting the slope, and (d) an operation of scraping the earth and sand on the ground.

[Explanation of symbols]

 Reference Signs List 10: Push plate 11: Front digging blade 12: Push plate main body 12a: Rear digging blade 13: Reinforcing horizontal rib 20: First pocket 21: Front curved plate 22: Reinforcing vertical rib 30: Second pocket 31: Rear curved plate 40: Mounting bracket 41: Mounting plate 42: First bearing portion 43: Second bearing portion 51: Horizontal elongated reinforcing member 52: Reinforcement bracket 53: Side plate 54: Protection plate

Claims (4)

[Claims] 1. A push plate having a horizontally long and flat shape, a reinforcing transverse rib fixed along the longitudinal direction on the back side thereof, and having a front excavating blade and a rear excavating blade at front and rear ends, respectively. A first pocket and a second pocket formed on the back side of the push plate with the opening turned back and forth, and a mounting bracket fixed to the second pocket to be attached to and detached from a boom of a hydraulic shovel. A slope construction work bucket comprising: 2. The first pocket and the second pocket are formed by fixing a front curved plate and a rear curved plate, each having a concave curved surface opposite to each other, to the back surface of the pressing plate, and both curved plates. The left and right openings are closed by side plates, respectively. Reinforcing vertical ribs are fixed to the concave curved surface of the front curved plate along the vertical direction thereof, and the concave curved surface of the rear curved plate is 2. The slope creation work bucket according to claim 1, wherein the mounting bracket is fixed along a direction, and the curved plates fix a horizontally long reinforcing member to upper ends thereof. 3. 3. A protection plate having a shape similar to that of the side digging blade side and / or the rear digging blade side of the side plate is superimposed and fixed, and a front end side of the protection plate is 3. A slope construction work bucket according to claim 2, wherein the bucket protrudes from an end of the side plate. 4. The mounting bracket includes two substantially parallel bearings detachably attached to the end of a boom of a hydraulic shovel, and the two bearings are arranged such that an imaginary plane including their axes is formed by the push plate. The slope construction work bucket according to any one of claims 1 to 3, wherein the bucket is disposed so as to be at an angle of 40 to 55 ° with respect to the angle.